diff --git a/examples/directx11_example/directx11_example.vcxproj b/examples/directx11_example/directx11_example.vcxproj
index 06114202..5f731ac7 100644
--- a/examples/directx11_example/directx11_example.vcxproj
+++ b/examples/directx11_example/directx11_example.vcxproj
@@ -68,8 +68,6 @@
-
-
diff --git a/examples/directx11_example/directx11_example.vcxproj.filters b/examples/directx11_example/directx11_example.vcxproj.filters
index 8fc7b4d5..ab9c654e 100644
--- a/examples/directx11_example/directx11_example.vcxproj.filters
+++ b/examples/directx11_example/directx11_example.vcxproj.filters
@@ -15,12 +15,6 @@
imgui
-
- imgui
-
-
- sources
-
diff --git a/examples/directx11_example/main.cpp b/examples/directx11_example/main.cpp
index ec3e20aa..e718d14c 100644
--- a/examples/directx11_example/main.cpp
+++ b/examples/directx11_example/main.cpp
@@ -1,9 +1,6 @@
// ImGui - standalone example application for DirectX 11
#include
-#define STB_IMAGE_STATIC
-#define STB_IMAGE_IMPLEMENTATION
-#include "../shared/stb_image.h" // for .png loading
#include "../../imgui.h"
// DirectX 11
@@ -290,8 +287,9 @@ HRESULT InitDeviceD3D(HWND hWnd)
\
float4 main(PS_INPUT input) : SV_Target\
{\
- float4 out_col = texture0.Sample(sampler0, input.uv);\
- return input.col * out_col;\
+ float4 out_col = input.col; \
+ out_col.w *= texture0.Sample(sampler0, input.uv).w; \
+ return out_col; \
}";
D3DCompile(pixelShader, strlen(pixelShader), NULL, NULL, NULL, "main", "ps_5_0", 0, 0, &g_pPixelShaderBlob, NULL);
@@ -427,23 +425,22 @@ void InitImGui()
}
}
- // Load font texture
- // Default font (embedded in code)
- const void* png_data;
- unsigned int png_size;
- ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
- int tex_x, tex_y, tex_comp;
- void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
- IM_ASSERT(tex_data != NULL);
+ // Load font
+ io.Font = new ImFont();
+ io.Font->LoadDefault();
+ //io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
+ //io.Font->DisplayOffset.y += 0.0f;
+ IM_ASSERT(io.Font->IsLoaded());
+ // Copy font texture
{
D3D11_TEXTURE2D_DESC desc;
ZeroMemory(&desc, sizeof(desc));
- desc.Width = tex_x;
- desc.Height = tex_y;
+ desc.Width = io.Font->TexWidth;
+ desc.Height = io.Font->TexHeight;
desc.MipLevels = 1;
desc.ArraySize = 1;
- desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+ desc.Format = DXGI_FORMAT_A8_UNORM;
desc.SampleDesc.Count = 1;
desc.Usage = D3D11_USAGE_DEFAULT;
desc.BindFlags = D3D11_BIND_SHADER_RESOURCE;
@@ -451,15 +448,15 @@ void InitImGui()
ID3D11Texture2D *pTexture = NULL;
D3D11_SUBRESOURCE_DATA subResource;
- subResource.pSysMem = tex_data;
- subResource.SysMemPitch = tex_x * 4;
+ subResource.pSysMem = io.Font->TexPixels;
+ subResource.SysMemPitch = desc.Width * 1;
subResource.SysMemSlicePitch = 0;
g_pd3dDevice->CreateTexture2D(&desc, &subResource, &pTexture);
// Create texture view
D3D11_SHADER_RESOURCE_VIEW_DESC srvDesc;
ZeroMemory(&srvDesc, sizeof(srvDesc));
- srvDesc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
+ srvDesc.Format = DXGI_FORMAT_A8_UNORM;
srvDesc.ViewDimension = D3D11_SRV_DIMENSION_TEXTURE2D;
srvDesc.Texture2D.MipLevels = desc.MipLevels;
srvDesc.Texture2D.MostDetailedMip = 0;
@@ -471,7 +468,7 @@ void InitImGui()
{
D3D11_SAMPLER_DESC desc;
ZeroMemory(&desc, sizeof(desc));
- desc.Filter = D3D11_FILTER_MIN_MAG_MIP_POINT;
+ desc.Filter = D3D11_FILTER_MIN_MAG_POINT_MIP_LINEAR;
desc.AddressU = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressV = D3D11_TEXTURE_ADDRESS_WRAP;
desc.AddressW = D3D11_TEXTURE_ADDRESS_WRAP;
diff --git a/examples/directx9_example/directx9_example.vcxproj b/examples/directx9_example/directx9_example.vcxproj
index 5609b756..a6bea6b8 100644
--- a/examples/directx9_example/directx9_example.vcxproj
+++ b/examples/directx9_example/directx9_example.vcxproj
@@ -76,7 +76,6 @@
-
diff --git a/examples/directx9_example/directx9_example.vcxproj.filters b/examples/directx9_example/directx9_example.vcxproj.filters
index f39e1589..06afcb03 100644
--- a/examples/directx9_example/directx9_example.vcxproj.filters
+++ b/examples/directx9_example/directx9_example.vcxproj.filters
@@ -24,8 +24,5 @@
imgui
-
- imgui
-
\ No newline at end of file
diff --git a/examples/directx9_example/main.cpp b/examples/directx9_example/main.cpp
index fe4f15d7..a35206db 100644
--- a/examples/directx9_example/main.cpp
+++ b/examples/directx9_example/main.cpp
@@ -73,12 +73,13 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
// Setup texture
g_pd3dDevice->SetTexture( 0, g_pTexture );
- g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_MODULATE );
- g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_TEXTURE );
- g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG2, D3DTA_DIFFUSE );
+ g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLOROP, D3DTOP_SELECTARG1 );
+ g_pd3dDevice->SetTextureStageState( 0, D3DTSS_COLORARG1, D3DTA_DIFFUSE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAOP, D3DTOP_MODULATE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG1, D3DTA_TEXTURE );
g_pd3dDevice->SetTextureStageState( 0, D3DTSS_ALPHAARG2, D3DTA_DIFFUSE );
+ g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MINFILTER, D3DTEXF_LINEAR );
+ g_pd3dDevice->SetSamplerState( 0, D3DSAMP_MAGFILTER, D3DTEXF_LINEAR );
// Setup orthographic projection matrix
D3DXMATRIXA16 mat;
@@ -213,15 +214,21 @@ void InitImGui()
return;
}
- // Load font texture
- const void* png_data;
- unsigned int png_size;
- ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
- if (D3DXCreateTextureFromFileInMemory(g_pd3dDevice, png_data, png_size, &g_pTexture) < 0)
- {
- IM_ASSERT(0);
- return;
- }
+ // Load font
+ io.Font = new ImFont();
+ io.Font->LoadDefault();
+ //io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
+ io.Font->LoadFromFileTTF("../../extra_fonts/ArialUni.ttf", 20.0f, ImFont::GetGlyphRangesDefault());
+ //io.Font->DisplayOffset.y += 0.0f;
+ IM_ASSERT(io.Font->IsLoaded());
+
+ // Copy font texture
+ if (D3DXCreateTexture(g_pd3dDevice, io.Font->TexWidth, io.Font->TexHeight, 1, D3DUSAGE_DYNAMIC, D3DFMT_A8, D3DPOOL_DEFAULT, &g_pTexture) < 0) { IM_ASSERT(0); return; }
+ D3DLOCKED_RECT tex_locked_rect;
+ if (g_pTexture->LockRect(0, &tex_locked_rect, NULL, 0) != D3D_OK) { IM_ASSERT(0); return; }
+ for (int y = 0; y < io.Font->TexHeight; y++)
+ memcpy((unsigned char *)tex_locked_rect.pBits + tex_locked_rect.Pitch * y, io.Font->TexPixels + io.Font->TexWidth * y, io.Font->TexWidth);
+ g_pTexture->UnlockRect(0);
}
INT64 ticks_per_second = 0;
@@ -330,7 +337,7 @@ int WINAPI wWinMain(HINSTANCE hInst, HINSTANCE, LPWSTR, int)
// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
if (show_test_window)
{
- ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
+ ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
ImGui::ShowTestWindow(&show_test_window);
}
diff --git a/examples/opengl3_example/main.cpp b/examples/opengl3_example/main.cpp
index 91dcd149..ff8122f9 100644
--- a/examples/opengl3_example/main.cpp
+++ b/examples/opengl3_example/main.cpp
@@ -8,9 +8,7 @@
#endif
#include "../../imgui.h"
-#define STB_IMAGE_STATIC
-#define STB_IMAGE_IMPLEMENTATION
-#include "../shared/stb_image.h" // stb_image.h for PNG loading
+#include
// Glfw/Glew
#define GLEW_STATIC
@@ -24,7 +22,7 @@ static bool mousePressed[2] = { false, false };
// Shader variables
static int shader_handle, vert_handle, frag_handle;
-static int texture_location, ortho_location;
+static int texture_location, proj_mtx_location;
static int position_location, uv_location, colour_location;
static size_t vbo_max_size = 20000;
static unsigned int vbo_handle, vao_handle;
@@ -62,7 +60,7 @@ static void ImImpl_RenderDrawLists(ImDrawList** const cmd_lists, int cmd_lists_c
};
glUseProgram(shader_handle);
glUniform1i(texture_location, 0);
- glUniformMatrix4fv(ortho_location, 1, GL_FALSE, &ortho_projection[0][0]);
+ glUniformMatrix4fv(proj_mtx_location, 1, GL_FALSE, &ortho_projection[0][0]);
// Grow our buffer according to what we need
size_t total_vtx_count = 0;
@@ -184,28 +182,29 @@ void InitGL()
const GLchar *vertex_shader =
"#version 330\n"
- "uniform mat4 ortho;\n"
+ "uniform mat4 ProjMtx;\n"
"in vec2 Position;\n"
"in vec2 UV;\n"
- "in vec4 Colour;\n"
+ "in vec4 Color;\n"
"out vec2 Frag_UV;\n"
- "out vec4 Frag_Colour;\n"
+ "out vec4 Frag_Color;\n"
"void main()\n"
"{\n"
" Frag_UV = UV;\n"
- " Frag_Colour = Colour;\n"
- " gl_Position = ortho*vec4(Position.xy,0,1);\n"
+ " Frag_Color = Color;\n"
+ " gl_Position = ProjMtx * vec4(Position.xy,0,1);\n"
"}\n";
const GLchar* fragment_shader =
"#version 330\n"
"uniform sampler2D Texture;\n"
"in vec2 Frag_UV;\n"
- "in vec4 Frag_Colour;\n"
- "out vec4 FragColor;\n"
+ "in vec4 Frag_Color;\n"
+ "out vec4 Out_Color;\n"
"void main()\n"
"{\n"
- " FragColor = Frag_Colour * texture( Texture, Frag_UV.st);\n"
+ " Out_Color = Frag_Color;\n"
+ " Out_Color.w *= texture( Texture, Frag_UV.st).x;\n"
"}\n";
shader_handle = glCreateProgram();
@@ -220,10 +219,10 @@ void InitGL()
glLinkProgram(shader_handle);
texture_location = glGetUniformLocation(shader_handle, "Texture");
- ortho_location = glGetUniformLocation(shader_handle, "ortho");
+ proj_mtx_location = glGetUniformLocation(shader_handle, "ProjMtx");
position_location = glGetAttribLocation(shader_handle, "Position");
uv_location = glGetAttribLocation(shader_handle, "UV");
- colour_location = glGetAttribLocation(shader_handle, "Colour");
+ colour_location = glGetAttribLocation(shader_handle, "Color");
glGenBuffers(1, &vbo_handle);
glBindBuffer(GL_ARRAY_BUFFER, vbo_handle);
@@ -270,18 +269,20 @@ void InitImGui()
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
- // Load font texture
+ // Load font
+ io.Font = new ImFont();
+ io.Font->LoadDefault();
+ //io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
+ //io.Font->DisplayOffset.y += 0.0f;
+ IM_ASSERT(io.Font->IsLoaded());
+
+ // Copy font texture
glGenTextures(1, &fontTex);
glBindTexture(GL_TEXTURE_2D, fontTex);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- const void* png_data;
- unsigned int png_size;
- ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
- int tex_x, tex_y, tex_comp;
- void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_x, tex_y, 0, GL_RGBA, GL_UNSIGNED_BYTE, tex_data);
- stbi_image_free(tex_data);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ IM_ASSERT(io.Font->IsLoaded());
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_RED, io.Font->TexWidth, io.Font->TexHeight, 0, GL_RED, GL_UNSIGNED_BYTE, io.Font->TexPixels);
}
void UpdateImGui()
@@ -364,7 +365,7 @@ int main(int argc, char** argv)
// 3. Show the ImGui test window. Most of the sample code is in ImGui::ShowTestWindow()
if (show_test_window)
{
- ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
+ ImGui::SetNextWindowPos(ImVec2(650, 20), ImGuiSetCondition_FirstUseEver);
ImGui::ShowTestWindow(&show_test_window);
}
diff --git a/examples/opengl3_example/opengl3_example.vcxproj b/examples/opengl3_example/opengl3_example.vcxproj
index 657b9e1b..a5c11047 100644
--- a/examples/opengl3_example/opengl3_example.vcxproj
+++ b/examples/opengl3_example/opengl3_example.vcxproj
@@ -74,7 +74,6 @@
-
diff --git a/examples/opengl3_example/opengl3_example.vcxproj.filters b/examples/opengl3_example/opengl3_example.vcxproj.filters
index f5668ce5..c961b998 100644
--- a/examples/opengl3_example/opengl3_example.vcxproj.filters
+++ b/examples/opengl3_example/opengl3_example.vcxproj.filters
@@ -24,8 +24,5 @@
imgui
-
- imgui
-
\ No newline at end of file
diff --git a/examples/opengl_example/ProggyClean.ttf b/examples/opengl_example/ProggyClean.ttf
new file mode 100644
index 00000000..0270cdfe
Binary files /dev/null and b/examples/opengl_example/ProggyClean.ttf differ
diff --git a/examples/opengl_example/main.cpp b/examples/opengl_example/main.cpp
index 12989cb4..2ceb6aa1 100644
--- a/examples/opengl_example/main.cpp
+++ b/examples/opengl_example/main.cpp
@@ -8,9 +8,7 @@
#endif
#include "../../imgui.h"
-#define STB_IMAGE_STATIC
-#define STB_IMAGE_IMPLEMENTATION
-#include "../shared/stb_image.h" // stb_image.h for PNG loading
+#include
// Glfw/Glew
#define GLEW_STATIC
@@ -180,42 +178,20 @@ void InitImGui()
io.SetClipboardTextFn = ImImpl_SetClipboardTextFn;
io.GetClipboardTextFn = ImImpl_GetClipboardTextFn;
- // Load font texture
- glGenTextures(1, &fontTex);
- glBindTexture(GL_TEXTURE_2D, fontTex);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
- glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-
-#if 1
- // Default font (embedded in code)
- const void* png_data;
- unsigned int png_size;
- ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
- int tex_x, tex_y, tex_comp;
- void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0);
- IM_ASSERT(tex_data != NULL);
-#else
- // Custom font from filesystem
+ // Load font
io.Font = new ImFont();
- io.Font->LoadFromFile("../../extra_fonts/mplus-2m-medium_18.fnt");
+ io.Font->LoadDefault();
+ //io.Font->LoadFromFileTTF("myfont.ttf", font_size_px, ImFont::GetGlyphRangesDefault());
+ //io.Font->DisplayOffset.y += 0.0f;
IM_ASSERT(io.Font->IsLoaded());
- int tex_x, tex_y, tex_comp;
- void* tex_data = stbi_load("../../extra_fonts/mplus-2m-medium_18.png", &tex_x, &tex_y, &tex_comp, 0);
- IM_ASSERT(tex_data != NULL);
-
- // Automatically find white pixel from the texture we just loaded
- // (io.Font->TexUvForWhite needs to contains UV coordinates pointing to a white pixel in order to render solid objects)
- for (int tex_data_off = 0; tex_data_off < tex_x*tex_y; tex_data_off++)
- if (((unsigned int*)tex_data)[tex_data_off] == 0xffffffff)
- {
- io.Font->TexUvForWhite = ImVec2((float)(tex_data_off % tex_x)/(tex_x), (float)(tex_data_off / tex_x)/(tex_y));
- break;
- }
-#endif
-
- glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, tex_x, tex_y, 0, GL_RGBA, GL_UNSIGNED_BYTE, tex_data);
- stbi_image_free(tex_data);
+ // Copy font texture
+ glGenTextures(1, &fontTex);
+ glBindTexture(GL_TEXTURE_2D, fontTex);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+ IM_ASSERT(io.Font->IsLoaded());
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, io.Font->TexWidth, io.Font->TexHeight, 0, GL_ALPHA, GL_UNSIGNED_BYTE, io.Font->TexPixels);
}
void UpdateImGui()
diff --git a/examples/opengl_example/opengl_example.vcxproj b/examples/opengl_example/opengl_example.vcxproj
index 8c1898d6..d453e2f5 100644
--- a/examples/opengl_example/opengl_example.vcxproj
+++ b/examples/opengl_example/opengl_example.vcxproj
@@ -74,8 +74,6 @@
-
-
diff --git a/examples/opengl_example/opengl_example.vcxproj.filters b/examples/opengl_example/opengl_example.vcxproj.filters
index 69a481e2..cf1ba241 100644
--- a/examples/opengl_example/opengl_example.vcxproj.filters
+++ b/examples/opengl_example/opengl_example.vcxproj.filters
@@ -24,11 +24,5 @@
imgui
-
- imgui
-
-
- sources
-
\ No newline at end of file
diff --git a/examples/shared/README.txt b/examples/shared/README.txt
deleted file mode 100644
index b2b431a0..00000000
--- a/examples/shared/README.txt
+++ /dev/null
@@ -1,3 +0,0 @@
-stb_image.h is used to load the PNG texture data by
- opengl_example
- directx11_example
diff --git a/examples/shared/stb_image.h b/examples/shared/stb_image.h
deleted file mode 100644
index 5ab9c58e..00000000
--- a/examples/shared/stb_image.h
+++ /dev/null
@@ -1,4744 +0,0 @@
-/* stb_image - v1.46 - public domain JPEG/PNG reader - http://nothings.org/stb_image.c
- when you control the images you're loading
- no warranty implied; use at your own risk
-
- Do this:
- #define STB_IMAGE_IMPLEMENTATION
- before you include this file in *one* C or C++ file to create the implementation.
-
- #define STBI_ASSERT(x) to avoid using assert.h.
-
- QUICK NOTES:
- Primarily of interest to game developers and other people who can
- avoid problematic images and only need the trivial interface
-
- JPEG baseline (no JPEG progressive)
- PNG 1/2/4/8-bit-per-channel (16 bpc not supported)
-
- TGA (not sure what subset, if a subset)
- BMP non-1bpp, non-RLE
- PSD (composited view only, no extra channels)
-
- GIF (*comp always reports as 4-channel)
- HDR (radiance rgbE format)
- PIC (Softimage PIC)
-
- - decode from memory or through FILE (define STBI_NO_STDIO to remove code)
- - decode from arbitrary I/O callbacks
- - overridable dequantizing-IDCT, YCbCr-to-RGB conversion (define STBI_SIMD)
-
- Latest revisions:
- 1.xx (2014-09-26) 1/2/4-bit PNG support (both grayscale and paletted)
- 1.46 (2014-08-26) fix broken tRNS chunk in non-paletted PNG
- 1.45 (2014-08-16) workaround MSVC-ARM internal compiler error by wrapping malloc
- 1.44 (2014-08-07) warnings
- 1.43 (2014-07-15) fix MSVC-only bug in 1.42
- 1.42 (2014-07-09) no _CRT_SECURE_NO_WARNINGS; error-path fixes; STBI_ASSERT
- 1.41 (2014-06-25) fix search&replace that messed up comments/error messages
- 1.40 (2014-06-22) gcc warning
- 1.39 (2014-06-15) TGA optimization bugfix, multiple BMP fixes
- 1.38 (2014-06-06) suppress MSVC run-time warnings, fix accidental rename of 'skip'
- 1.37 (2014-06-04) remove duplicate typedef
- 1.36 (2014-06-03) converted to header file, allow reading incorrect iphoned-images without iphone flag
- 1.35 (2014-05-27) warnings, bugfixes, TGA optimization, etc
-
- See end of file for full revision history.
-
- TODO:
- stbi_info support for BMP,PSD,HDR,PIC
-
-
- ============================ Contributors =========================
-
- Image formats Bug fixes & warning fixes
- Sean Barrett (jpeg, png, bmp) Marc LeBlanc
- Nicolas Schulz (hdr, psd) Christpher Lloyd
- Jonathan Dummer (tga) Dave Moore
- Jean-Marc Lienher (gif) Won Chun
- Tom Seddon (pic) the Horde3D community
- Thatcher Ulrich (psd) Janez Zemva
- Jonathan Blow
- Laurent Gomila
- Extensions, features Aruelien Pocheville
- Jetro Lauha (stbi_info) Ryamond Barbiero
- James "moose2000" Brown (iPhone PNG) David Woo
- Ben "Disch" Wenger (io callbacks) Roy Eltham
- Martin "SpartanJ" Golini Luke Graham
- Omar Cornut (1/2/4-bit png) Thomas Ruf
- John Bartholomew
- Optimizations & bugfixes Ken Hamada
- Fabian "ryg" Giesen Cort Stratton
- Arseny Kapoulkine Blazej Dariusz Roszkowski
- Thibault Reuille
- Paul Du Bois
- Guillaume George
- Jerry Jansson
- If your name should be here but Hayaki Saito
- isn't, let Sean know. Johan Duparc
- Ronny Chevalier
- Michal Cichon
-*/
-
-#ifndef STBI_INCLUDE_STB_IMAGE_H
-#define STBI_INCLUDE_STB_IMAGE_H
-
-// Limitations:
-// - no jpeg progressive support
-// - non-HDR formats support 8-bit samples only (jpeg, png)
-// - no delayed line count (jpeg) -- IJG doesn't support either
-// - no 1-bit BMP
-// - GIF always returns *comp=4
-//
-// Basic usage (see HDR discussion below):
-// int x,y,n;
-// unsigned char *data = stbi_load(filename, &x, &y, &n, 0);
-// // ... process data if not NULL ...
-// // ... x = width, y = height, n = # 8-bit components per pixel ...
-// // ... replace '0' with '1'..'4' to force that many components per pixel
-// // ... but 'n' will always be the number that it would have been if you said 0
-// stbi_image_free(data)
-//
-// Standard parameters:
-// int *x -- outputs image width in pixels
-// int *y -- outputs image height in pixels
-// int *comp -- outputs # of image components in image file
-// int req_comp -- if non-zero, # of image components requested in result
-//
-// The return value from an image loader is an 'unsigned char *' which points
-// to the pixel data. The pixel data consists of *y scanlines of *x pixels,
-// with each pixel consisting of N interleaved 8-bit components; the first
-// pixel pointed to is top-left-most in the image. There is no padding between
-// image scanlines or between pixels, regardless of format. The number of
-// components N is 'req_comp' if req_comp is non-zero, or *comp otherwise.
-// If req_comp is non-zero, *comp has the number of components that _would_
-// have been output otherwise. E.g. if you set req_comp to 4, you will always
-// get RGBA output, but you can check *comp to easily see if it's opaque.
-//
-// An output image with N components has the following components interleaved
-// in this order in each pixel:
-//
-// N=#comp components
-// 1 grey
-// 2 grey, alpha
-// 3 red, green, blue
-// 4 red, green, blue, alpha
-//
-// If image loading fails for any reason, the return value will be NULL,
-// and *x, *y, *comp will be unchanged. The function stbi_failure_reason()
-// can be queried for an extremely brief, end-user unfriendly explanation
-// of why the load failed. Define STBI_NO_FAILURE_STRINGS to avoid
-// compiling these strings at all, and STBI_FAILURE_USERMSG to get slightly
-// more user-friendly ones.
-//
-// Paletted PNG, BMP, GIF, and PIC images are automatically depalettized.
-//
-// ===========================================================================
-//
-// iPhone PNG support:
-//
-// By default we convert iphone-formatted PNGs back to RGB; nominally they
-// would silently load as BGR, except the existing code should have just
-// failed on such iPhone PNGs. But you can disable this conversion by
-// by calling stbi_convert_iphone_png_to_rgb(0), in which case
-// you will always just get the native iphone "format" through.
-//
-// Call stbi_set_unpremultiply_on_load(1) as well to force a divide per
-// pixel to remove any premultiplied alpha *only* if the image file explicitly
-// says there's premultiplied data (currently only happens in iPhone images,
-// and only if iPhone convert-to-rgb processing is on).
-//
-// ===========================================================================
-//
-// HDR image support (disable by defining STBI_NO_HDR)
-//
-// stb_image now supports loading HDR images in general, and currently
-// the Radiance .HDR file format, although the support is provided
-// generically. You can still load any file through the existing interface;
-// if you attempt to load an HDR file, it will be automatically remapped to
-// LDR, assuming gamma 2.2 and an arbitrary scale factor defaulting to 1;
-// both of these constants can be reconfigured through this interface:
-//
-// stbi_hdr_to_ldr_gamma(2.2f);
-// stbi_hdr_to_ldr_scale(1.0f);
-//
-// (note, do not use _inverse_ constants; stbi_image will invert them
-// appropriately).
-//
-// Additionally, there is a new, parallel interface for loading files as
-// (linear) floats to preserve the full dynamic range:
-//
-// float *data = stbi_loadf(filename, &x, &y, &n, 0);
-//
-// If you load LDR images through this interface, those images will
-// be promoted to floating point values, run through the inverse of
-// constants corresponding to the above:
-//
-// stbi_ldr_to_hdr_scale(1.0f);
-// stbi_ldr_to_hdr_gamma(2.2f);
-//
-// Finally, given a filename (or an open file or memory block--see header
-// file for details) containing image data, you can query for the "most
-// appropriate" interface to use (that is, whether the image is HDR or
-// not), using:
-//
-// stbi_is_hdr(char *filename);
-//
-// ===========================================================================
-//
-// I/O callbacks
-//
-// I/O callbacks allow you to read from arbitrary sources, like packaged
-// files or some other source. Data read from callbacks are processed
-// through a small internal buffer (currently 128 bytes) to try to reduce
-// overhead.
-//
-// The three functions you must define are "read" (reads some bytes of data),
-// "skip" (skips some bytes of data), "eof" (reports if the stream is at the end).
-
-
-#ifndef STBI_NO_STDIO
-#include
-#endif // STBI_NO_STDIO
-
-#define STBI_VERSION 1
-
-enum
-{
- STBI_default = 0, // only used for req_comp
-
- STBI_grey = 1,
- STBI_grey_alpha = 2,
- STBI_rgb = 3,
- STBI_rgb_alpha = 4
-};
-
-typedef unsigned char stbi_uc;
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifdef STB_IMAGE_STATIC
-#define STBIDEF static
-#else
-#define STBIDEF extern
-#endif
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// PRIMARY API - works on images of any type
-//
-
-//
-// load image by filename, open file, or memory buffer
-//
-
-STBIDEF stbi_uc *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp);
-
-#ifndef STBI_NO_STDIO
-STBIDEF stbi_uc *stbi_load (char const *filename, int *x, int *y, int *comp, int req_comp);
-STBIDEF stbi_uc *stbi_load_from_file (FILE *f, int *x, int *y, int *comp, int req_comp);
-// for stbi_load_from_file, file pointer is left pointing immediately after image
-#endif
-
-typedef struct
-{
- int (*read) (void *user,char *data,int size); // fill 'data' with 'size' bytes. return number of bytes actually read
- void (*skip) (void *user,int n); // skip the next 'n' bytes, or 'unget' the last -n bytes if negative
- int (*eof) (void *user); // returns nonzero if we are at end of file/data
-} stbi_io_callbacks;
-
-STBIDEF stbi_uc *stbi_load_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp);
-
-#ifndef STBI_NO_HDR
- STBIDEF float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp);
-
- #ifndef STBI_NO_STDIO
- STBIDEF float *stbi_loadf (char const *filename, int *x, int *y, int *comp, int req_comp);
- STBIDEF float *stbi_loadf_from_file (FILE *f, int *x, int *y, int *comp, int req_comp);
- #endif
-
- STBIDEF float *stbi_loadf_from_callbacks (stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp);
-
- STBIDEF void stbi_hdr_to_ldr_gamma(float gamma);
- STBIDEF void stbi_hdr_to_ldr_scale(float scale);
-
- STBIDEF void stbi_ldr_to_hdr_gamma(float gamma);
- STBIDEF void stbi_ldr_to_hdr_scale(float scale);
-#endif // STBI_NO_HDR
-
-// stbi_is_hdr is always defined
-STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user);
-STBIDEF int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len);
-#ifndef STBI_NO_STDIO
-STBIDEF int stbi_is_hdr (char const *filename);
-STBIDEF int stbi_is_hdr_from_file(FILE *f);
-#endif // STBI_NO_STDIO
-
-
-// get a VERY brief reason for failure
-// NOT THREADSAFE
-STBIDEF const char *stbi_failure_reason (void);
-
-// free the loaded image -- this is just free()
-STBIDEF void stbi_image_free (void *retval_from_stbi_load);
-
-// get image dimensions & components without fully decoding
-STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp);
-STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp);
-
-#ifndef STBI_NO_STDIO
-STBIDEF int stbi_info (char const *filename, int *x, int *y, int *comp);
-STBIDEF int stbi_info_from_file (FILE *f, int *x, int *y, int *comp);
-
-#endif
-
-
-
-// for image formats that explicitly notate that they have premultiplied alpha,
-// we just return the colors as stored in the file. set this flag to force
-// unpremultiplication. results are undefined if the unpremultiply overflow.
-STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply);
-
-// indicate whether we should process iphone images back to canonical format,
-// or just pass them through "as-is"
-STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert);
-
-
-// ZLIB client - used by PNG, available for other purposes
-
-STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen);
-STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header);
-STBIDEF char *stbi_zlib_decode_malloc(const char *buffer, int len, int *outlen);
-STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, const char *ibuffer, int ilen);
-
-STBIDEF char *stbi_zlib_decode_noheader_malloc(const char *buffer, int len, int *outlen);
-STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen);
-
-
-// define faster low-level operations (typically SIMD support)
-#ifdef STBI_SIMD
-typedef void (*stbi_idct_8x8)(stbi_uc *out, int out_stride, short data[64], unsigned short *dequantize);
-// compute an integer IDCT on "input"
-// input[x] = data[x] * dequantize[x]
-// write results to 'out': 64 samples, each run of 8 spaced by 'out_stride'
-// CLAMP results to 0..255
-typedef void (*stbi_YCbCr_to_RGB_run)(stbi_uc *output, stbi_uc const *y, stbi_uc const *cb, stbi_uc const *cr, int count, int step);
-// compute a conversion from YCbCr to RGB
-// 'count' pixels
-// write pixels to 'output'; each pixel is 'step' bytes (either 3 or 4; if 4, write '255' as 4th), order R,G,B
-// y: Y input channel
-// cb: Cb input channel; scale/biased to be 0..255
-// cr: Cr input channel; scale/biased to be 0..255
-
-STBIDEF void stbi_install_idct(stbi_idct_8x8 func);
-STBIDEF void stbi_install_YCbCr_to_RGB(stbi_YCbCr_to_RGB_run func);
-#endif // STBI_SIMD
-
-
-#ifdef __cplusplus
-}
-#endif
-
-//
-//
-//// end header file /////////////////////////////////////////////////////
-#endif // STBI_INCLUDE_STB_IMAGE_H
-
-#ifdef STB_IMAGE_IMPLEMENTATION
-
-#ifndef STBI_NO_HDR
-#include // ldexp
-#include // strcmp, strtok
-#endif
-
-#ifndef STBI_NO_STDIO
-#include
-#endif
-#include
-#include
-#ifndef STBI_ASSERT
-#include
-#define STBI_ASSERT(x) assert(x)
-#endif
-#include
-#include // ptrdiff_t on osx
-
-#ifndef _MSC_VER
- #ifdef __cplusplus
- #define stbi_inline inline
- #else
- #define stbi_inline
- #endif
-#else
- #define stbi_inline __forceinline
-#endif
-
-
-#ifdef _MSC_VER
-typedef unsigned short stbi__uint16;
-typedef signed short stbi__int16;
-typedef unsigned int stbi__uint32;
-typedef signed int stbi__int32;
-#else
-#include
-typedef uint16_t stbi__uint16;
-typedef int16_t stbi__int16;
-typedef uint32_t stbi__uint32;
-typedef int32_t stbi__int32;
-#endif
-
-// should produce compiler error if size is wrong
-typedef unsigned char validate_uint32[sizeof(stbi__uint32)==4 ? 1 : -1];
-
-#ifdef _MSC_VER
-#define STBI_NOTUSED(v) (void)(v)
-#else
-#define STBI_NOTUSED(v) (void)sizeof(v)
-#endif
-
-#ifdef _MSC_VER
-#define STBI_HAS_LROTL
-#endif
-
-#ifdef STBI_HAS_LROTL
- #define stbi_lrot(x,y) _lrotl(x,y)
-#else
- #define stbi_lrot(x,y) (((x) << (y)) | ((x) >> (32 - (y))))
-#endif
-
-///////////////////////////////////////////////
-//
-// stbi__context struct and start_xxx functions
-
-// stbi__context structure is our basic context used by all images, so it
-// contains all the IO context, plus some basic image information
-typedef struct
-{
- stbi__uint32 img_x, img_y;
- int img_n, img_out_n;
-
- stbi_io_callbacks io;
- void *io_user_data;
-
- int read_from_callbacks;
- int buflen;
- stbi_uc buffer_start[128];
-
- stbi_uc *img_buffer, *img_buffer_end;
- stbi_uc *img_buffer_original;
-} stbi__context;
-
-
-static void stbi__refill_buffer(stbi__context *s);
-
-// initialize a memory-decode context
-static void stbi__start_mem(stbi__context *s, stbi_uc const *buffer, int len)
-{
- s->io.read = NULL;
- s->read_from_callbacks = 0;
- s->img_buffer = s->img_buffer_original = (stbi_uc *) buffer;
- s->img_buffer_end = (stbi_uc *) buffer+len;
-}
-
-// initialize a callback-based context
-static void stbi__start_callbacks(stbi__context *s, stbi_io_callbacks *c, void *user)
-{
- s->io = *c;
- s->io_user_data = user;
- s->buflen = sizeof(s->buffer_start);
- s->read_from_callbacks = 1;
- s->img_buffer_original = s->buffer_start;
- stbi__refill_buffer(s);
-}
-
-#ifndef STBI_NO_STDIO
-
-static int stbi__stdio_read(void *user, char *data, int size)
-{
- return (int) fread(data,1,size,(FILE*) user);
-}
-
-static void stbi__stdio_skip(void *user, int n)
-{
- fseek((FILE*) user, n, SEEK_CUR);
-}
-
-static int stbi__stdio_eof(void *user)
-{
- return feof((FILE*) user);
-}
-
-static stbi_io_callbacks stbi__stdio_callbacks =
-{
- stbi__stdio_read,
- stbi__stdio_skip,
- stbi__stdio_eof,
-};
-
-static void stbi__start_file(stbi__context *s, FILE *f)
-{
- stbi__start_callbacks(s, &stbi__stdio_callbacks, (void *) f);
-}
-
-//static void stop_file(stbi__context *s) { }
-
-#endif // !STBI_NO_STDIO
-
-static void stbi__rewind(stbi__context *s)
-{
- // conceptually rewind SHOULD rewind to the beginning of the stream,
- // but we just rewind to the beginning of the initial buffer, because
- // we only use it after doing 'test', which only ever looks at at most 92 bytes
- s->img_buffer = s->img_buffer_original;
-}
-
-static int stbi__jpeg_test(stbi__context *s);
-static stbi_uc *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp);
-static int stbi__png_test(stbi__context *s);
-static stbi_uc *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp);
-static int stbi__bmp_test(stbi__context *s);
-static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-static int stbi__tga_test(stbi__context *s);
-static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp);
-static int stbi__psd_test(stbi__context *s);
-static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-#ifndef STBI_NO_HDR
-static int stbi__hdr_test(stbi__context *s);
-static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-#endif
-static int stbi__pic_test(stbi__context *s);
-static stbi_uc *stbi__pic_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-static int stbi__gif_test(stbi__context *s);
-static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp);
-static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp);
-
-
-// this is not threadsafe
-static const char *stbi__g_failure_reason;
-
-STBIDEF const char *stbi_failure_reason(void)
-{
- return stbi__g_failure_reason;
-}
-
-static int stbi__err(const char *str)
-{
- stbi__g_failure_reason = str;
- return 0;
-}
-
-static void *stbi__malloc(size_t size)
-{
- return malloc(size);
-}
-
-// stbi__err - error
-// stbi__errpf - error returning pointer to float
-// stbi__errpuc - error returning pointer to unsigned char
-
-#ifdef STBI_NO_FAILURE_STRINGS
- #define stbi__err(x,y) 0
-#elif defined(STBI_FAILURE_USERMSG)
- #define stbi__err(x,y) stbi__err(y)
-#else
- #define stbi__err(x,y) stbi__err(x)
-#endif
-
-#define stbi__errpf(x,y) ((float *) (stbi__err(x,y)?NULL:NULL))
-#define stbi__errpuc(x,y) ((unsigned char *) (stbi__err(x,y)?NULL:NULL))
-
-STBIDEF void stbi_image_free(void *retval_from_stbi_load)
-{
- free(retval_from_stbi_load);
-}
-
-#ifndef STBI_NO_HDR
-static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp);
-static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp);
-#endif
-
-static unsigned char *stbi_load_main(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- if (stbi__jpeg_test(s)) return stbi__jpeg_load(s,x,y,comp,req_comp);
- if (stbi__png_test(s)) return stbi__png_load(s,x,y,comp,req_comp);
- if (stbi__bmp_test(s)) return stbi__bmp_load(s,x,y,comp,req_comp);
- if (stbi__gif_test(s)) return stbi__gif_load(s,x,y,comp,req_comp);
- if (stbi__psd_test(s)) return stbi__psd_load(s,x,y,comp,req_comp);
- if (stbi__pic_test(s)) return stbi__pic_load(s,x,y,comp,req_comp);
-
- #ifndef STBI_NO_HDR
- if (stbi__hdr_test(s)) {
- float *hdr = stbi__hdr_load(s, x,y,comp,req_comp);
- return stbi__hdr_to_ldr(hdr, *x, *y, req_comp ? req_comp : *comp);
- }
- #endif
-
- // test tga last because it's a crappy test!
- if (stbi__tga_test(s))
- return stbi__tga_load(s,x,y,comp,req_comp);
- return stbi__errpuc("unknown image type", "Image not of any known type, or corrupt");
-}
-
-#ifndef STBI_NO_STDIO
-
-FILE *stbi__fopen(char const *filename, char const *mode)
-{
- FILE *f;
-#if defined(_MSC_VER) && _MSC_VER >= 1400
- if (0 != fopen_s(&f, filename, mode))
- f=0;
-#else
- f = fopen(filename, mode);
-#endif
- return f;
-}
-
-
-STBIDEF unsigned char *stbi_load(char const *filename, int *x, int *y, int *comp, int req_comp)
-{
- FILE *f = stbi__fopen(filename, "rb");
- unsigned char *result;
- if (!f) return stbi__errpuc("can't fopen", "Unable to open file");
- result = stbi_load_from_file(f,x,y,comp,req_comp);
- fclose(f);
- return result;
-}
-
-STBIDEF unsigned char *stbi_load_from_file(FILE *f, int *x, int *y, int *comp, int req_comp)
-{
- unsigned char *result;
- stbi__context s;
- stbi__start_file(&s,f);
- result = stbi_load_main(&s,x,y,comp,req_comp);
- if (result) {
- // need to 'unget' all the characters in the IO buffer
- fseek(f, - (int) (s.img_buffer_end - s.img_buffer), SEEK_CUR);
- }
- return result;
-}
-#endif //!STBI_NO_STDIO
-
-STBIDEF unsigned char *stbi_load_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp)
-{
- stbi__context s;
- stbi__start_mem(&s,buffer,len);
- return stbi_load_main(&s,x,y,comp,req_comp);
-}
-
-unsigned char *stbi_load_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp)
-{
- stbi__context s;
- stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user);
- return stbi_load_main(&s,x,y,comp,req_comp);
-}
-
-#ifndef STBI_NO_HDR
-
-float *stbi_loadf_main(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- unsigned char *data;
- #ifndef STBI_NO_HDR
- if (stbi__hdr_test(s))
- return stbi__hdr_load(s,x,y,comp,req_comp);
- #endif
- data = stbi_load_main(s, x, y, comp, req_comp);
- if (data)
- return stbi__ldr_to_hdr(data, *x, *y, req_comp ? req_comp : *comp);
- return stbi__errpf("unknown image type", "Image not of any known type, or corrupt");
-}
-
-float *stbi_loadf_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp, int req_comp)
-{
- stbi__context s;
- stbi__start_mem(&s,buffer,len);
- return stbi_loadf_main(&s,x,y,comp,req_comp);
-}
-
-float *stbi_loadf_from_callbacks(stbi_io_callbacks const *clbk, void *user, int *x, int *y, int *comp, int req_comp)
-{
- stbi__context s;
- stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user);
- return stbi_loadf_main(&s,x,y,comp,req_comp);
-}
-
-#ifndef STBI_NO_STDIO
-float *stbi_loadf(char const *filename, int *x, int *y, int *comp, int req_comp)
-{
- float *result;
- FILE *f = stbi__fopen(filename, "rb");
- if (!f) return stbi__errpf("can't fopen", "Unable to open file");
- result = stbi_loadf_from_file(f,x,y,comp,req_comp);
- fclose(f);
- return result;
-}
-
-float *stbi_loadf_from_file(FILE *f, int *x, int *y, int *comp, int req_comp)
-{
- stbi__context s;
- stbi__start_file(&s,f);
- return stbi_loadf_main(&s,x,y,comp,req_comp);
-}
-#endif // !STBI_NO_STDIO
-
-#endif // !STBI_NO_HDR
-
-// these is-hdr-or-not is defined independent of whether STBI_NO_HDR is
-// defined, for API simplicity; if STBI_NO_HDR is defined, it always
-// reports false!
-
-int stbi_is_hdr_from_memory(stbi_uc const *buffer, int len)
-{
- #ifndef STBI_NO_HDR
- stbi__context s;
- stbi__start_mem(&s,buffer,len);
- return stbi__hdr_test(&s);
- #else
- STBI_NOTUSED(buffer);
- STBI_NOTUSED(len);
- return 0;
- #endif
-}
-
-#ifndef STBI_NO_STDIO
-STBIDEF int stbi_is_hdr (char const *filename)
-{
- FILE *f = stbi__fopen(filename, "rb");
- int result=0;
- if (f) {
- result = stbi_is_hdr_from_file(f);
- fclose(f);
- }
- return result;
-}
-
-STBIDEF int stbi_is_hdr_from_file(FILE *f)
-{
- #ifndef STBI_NO_HDR
- stbi__context s;
- stbi__start_file(&s,f);
- return stbi__hdr_test(&s);
- #else
- return 0;
- #endif
-}
-#endif // !STBI_NO_STDIO
-
-STBIDEF int stbi_is_hdr_from_callbacks(stbi_io_callbacks const *clbk, void *user)
-{
- #ifndef STBI_NO_HDR
- stbi__context s;
- stbi__start_callbacks(&s, (stbi_io_callbacks *) clbk, user);
- return stbi__hdr_test(&s);
- #else
- return 0;
- #endif
-}
-
-#ifndef STBI_NO_HDR
-static float stbi__h2l_gamma_i=1.0f/2.2f, stbi__h2l_scale_i=1.0f;
-static float stbi__l2h_gamma=2.2f, stbi__l2h_scale=1.0f;
-
-void stbi_hdr_to_ldr_gamma(float gamma) { stbi__h2l_gamma_i = 1/gamma; }
-void stbi_hdr_to_ldr_scale(float scale) { stbi__h2l_scale_i = 1/scale; }
-
-void stbi_ldr_to_hdr_gamma(float gamma) { stbi__l2h_gamma = gamma; }
-void stbi_ldr_to_hdr_scale(float scale) { stbi__l2h_scale = scale; }
-#endif
-
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// Common code used by all image loaders
-//
-
-enum
-{
- SCAN_load=0,
- SCAN_type,
- SCAN_header
-};
-
-static void stbi__refill_buffer(stbi__context *s)
-{
- int n = (s->io.read)(s->io_user_data,(char*)s->buffer_start,s->buflen);
- if (n == 0) {
- // at end of file, treat same as if from memory, but need to handle case
- // where s->img_buffer isn't pointing to safe memory, e.g. 0-byte file
- s->read_from_callbacks = 0;
- s->img_buffer = s->buffer_start;
- s->img_buffer_end = s->buffer_start+1;
- *s->img_buffer = 0;
- } else {
- s->img_buffer = s->buffer_start;
- s->img_buffer_end = s->buffer_start + n;
- }
-}
-
-stbi_inline static stbi_uc stbi__get8(stbi__context *s)
-{
- if (s->img_buffer < s->img_buffer_end)
- return *s->img_buffer++;
- if (s->read_from_callbacks) {
- stbi__refill_buffer(s);
- return *s->img_buffer++;
- }
- return 0;
-}
-
-stbi_inline static int stbi__at_eof(stbi__context *s)
-{
- if (s->io.read) {
- if (!(s->io.eof)(s->io_user_data)) return 0;
- // if feof() is true, check if buffer = end
- // special case: we've only got the special 0 character at the end
- if (s->read_from_callbacks == 0) return 1;
- }
-
- return s->img_buffer >= s->img_buffer_end;
-}
-
-static void stbi__skip(stbi__context *s, int n)
-{
- if (s->io.read) {
- int blen = (int) (s->img_buffer_end - s->img_buffer);
- if (blen < n) {
- s->img_buffer = s->img_buffer_end;
- (s->io.skip)(s->io_user_data, n - blen);
- return;
- }
- }
- s->img_buffer += n;
-}
-
-static int stbi__getn(stbi__context *s, stbi_uc *buffer, int n)
-{
- if (s->io.read) {
- int blen = (int) (s->img_buffer_end - s->img_buffer);
- if (blen < n) {
- int res, count;
-
- memcpy(buffer, s->img_buffer, blen);
-
- count = (s->io.read)(s->io_user_data, (char*) buffer + blen, n - blen);
- res = (count == (n-blen));
- s->img_buffer = s->img_buffer_end;
- return res;
- }
- }
-
- if (s->img_buffer+n <= s->img_buffer_end) {
- memcpy(buffer, s->img_buffer, n);
- s->img_buffer += n;
- return 1;
- } else
- return 0;
-}
-
-static int stbi__get16be(stbi__context *s)
-{
- int z = stbi__get8(s);
- return (z << 8) + stbi__get8(s);
-}
-
-static stbi__uint32 stbi__get32be(stbi__context *s)
-{
- stbi__uint32 z = stbi__get16be(s);
- return (z << 16) + stbi__get16be(s);
-}
-
-static int stbi__get16le(stbi__context *s)
-{
- int z = stbi__get8(s);
- return z + (stbi__get8(s) << 8);
-}
-
-static stbi__uint32 stbi__get32le(stbi__context *s)
-{
- stbi__uint32 z = stbi__get16le(s);
- return z + (stbi__get16le(s) << 16);
-}
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// generic converter from built-in img_n to req_comp
-// individual types do this automatically as much as possible (e.g. jpeg
-// does all cases internally since it needs to colorspace convert anyway,
-// and it never has alpha, so very few cases ). png can automatically
-// interleave an alpha=255 channel, but falls back to this for other cases
-//
-// assume data buffer is malloced, so malloc a new one and free that one
-// only failure mode is malloc failing
-
-static stbi_uc stbi__compute_y(int r, int g, int b)
-{
- return (stbi_uc) (((r*77) + (g*150) + (29*b)) >> 8);
-}
-
-static unsigned char *stbi__convert_format(unsigned char *data, int img_n, int req_comp, unsigned int x, unsigned int y)
-{
- int i,j;
- unsigned char *good;
-
- if (req_comp == img_n) return data;
- STBI_ASSERT(req_comp >= 1 && req_comp <= 4);
-
- good = (unsigned char *) stbi__malloc(req_comp * x * y);
- if (good == NULL) {
- free(data);
- return stbi__errpuc("outofmem", "Out of memory");
- }
-
- for (j=0; j < (int) y; ++j) {
- unsigned char *src = data + j * x * img_n ;
- unsigned char *dest = good + j * x * req_comp;
-
- #define COMBO(a,b) ((a)*8+(b))
- #define CASE(a,b) case COMBO(a,b): for(i=x-1; i >= 0; --i, src += a, dest += b)
- // convert source image with img_n components to one with req_comp components;
- // avoid switch per pixel, so use switch per scanline and massive macros
- switch (COMBO(img_n, req_comp)) {
- CASE(1,2) dest[0]=src[0], dest[1]=255; break;
- CASE(1,3) dest[0]=dest[1]=dest[2]=src[0]; break;
- CASE(1,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=255; break;
- CASE(2,1) dest[0]=src[0]; break;
- CASE(2,3) dest[0]=dest[1]=dest[2]=src[0]; break;
- CASE(2,4) dest[0]=dest[1]=dest[2]=src[0], dest[3]=src[1]; break;
- CASE(3,4) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2],dest[3]=255; break;
- CASE(3,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break;
- CASE(3,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = 255; break;
- CASE(4,1) dest[0]=stbi__compute_y(src[0],src[1],src[2]); break;
- CASE(4,2) dest[0]=stbi__compute_y(src[0],src[1],src[2]), dest[1] = src[3]; break;
- CASE(4,3) dest[0]=src[0],dest[1]=src[1],dest[2]=src[2]; break;
- default: STBI_ASSERT(0);
- }
- #undef CASE
- }
-
- free(data);
- return good;
-}
-
-#ifndef STBI_NO_HDR
-static float *stbi__ldr_to_hdr(stbi_uc *data, int x, int y, int comp)
-{
- int i,k,n;
- float *output = (float *) stbi__malloc(x * y * comp * sizeof(float));
- if (output == NULL) { free(data); return stbi__errpf("outofmem", "Out of memory"); }
- // compute number of non-alpha components
- if (comp & 1) n = comp; else n = comp-1;
- for (i=0; i < x*y; ++i) {
- for (k=0; k < n; ++k) {
- output[i*comp + k] = (float) (pow(data[i*comp+k]/255.0f, stbi__l2h_gamma) * stbi__l2h_scale);
- }
- if (k < comp) output[i*comp + k] = data[i*comp+k]/255.0f;
- }
- free(data);
- return output;
-}
-
-#define stbi__float2int(x) ((int) (x))
-static stbi_uc *stbi__hdr_to_ldr(float *data, int x, int y, int comp)
-{
- int i,k,n;
- stbi_uc *output = (stbi_uc *) stbi__malloc(x * y * comp);
- if (output == NULL) { free(data); return stbi__errpuc("outofmem", "Out of memory"); }
- // compute number of non-alpha components
- if (comp & 1) n = comp; else n = comp-1;
- for (i=0; i < x*y; ++i) {
- for (k=0; k < n; ++k) {
- float z = (float) pow(data[i*comp+k]*stbi__h2l_scale_i, stbi__h2l_gamma_i) * 255 + 0.5f;
- if (z < 0) z = 0;
- if (z > 255) z = 255;
- output[i*comp + k] = (stbi_uc) stbi__float2int(z);
- }
- if (k < comp) {
- float z = data[i*comp+k] * 255 + 0.5f;
- if (z < 0) z = 0;
- if (z > 255) z = 255;
- output[i*comp + k] = (stbi_uc) stbi__float2int(z);
- }
- }
- free(data);
- return output;
-}
-#endif
-
-//////////////////////////////////////////////////////////////////////////////
-//
-// "baseline" JPEG/JFIF decoder (not actually fully baseline implementation)
-//
-// simple implementation
-// - channel subsampling of at most 2 in each dimension
-// - doesn't support delayed output of y-dimension
-// - simple interface (only one output format: 8-bit interleaved RGB)
-// - doesn't try to recover corrupt jpegs
-// - doesn't allow partial loading, loading multiple at once
-// - still fast on x86 (copying globals into locals doesn't help x86)
-// - allocates lots of intermediate memory (full size of all components)
-// - non-interleaved case requires this anyway
-// - allows good upsampling (see next)
-// high-quality
-// - upsampled channels are bilinearly interpolated, even across blocks
-// - quality integer IDCT derived from IJG's 'slow'
-// performance
-// - fast huffman; reasonable integer IDCT
-// - uses a lot of intermediate memory, could cache poorly
-// - load http://nothings.org/remote/anemones.jpg 3 times on 2.8Ghz P4
-// stb_jpeg: 1.34 seconds (MSVC6, default release build)
-// stb_jpeg: 1.06 seconds (MSVC6, processor = Pentium Pro)
-// IJL11.dll: 1.08 seconds (compiled by intel)
-// IJG 1998: 0.98 seconds (MSVC6, makefile provided by IJG)
-// IJG 1998: 0.95 seconds (MSVC6, makefile + proc=PPro)
-
-// huffman decoding acceleration
-#define FAST_BITS 9 // larger handles more cases; smaller stomps less cache
-
-typedef struct
-{
- stbi_uc fast[1 << FAST_BITS];
- // weirdly, repacking this into AoS is a 10% speed loss, instead of a win
- stbi__uint16 code[256];
- stbi_uc values[256];
- stbi_uc size[257];
- unsigned int maxcode[18];
- int delta[17]; // old 'firstsymbol' - old 'firstcode'
-} stbi__huffman;
-
-typedef struct
-{
- #ifdef STBI_SIMD
- unsigned short dequant2[4][64];
- #endif
- stbi__context *s;
- stbi__huffman huff_dc[4];
- stbi__huffman huff_ac[4];
- stbi_uc dequant[4][64];
-
-// sizes for components, interleaved MCUs
- int img_h_max, img_v_max;
- int img_mcu_x, img_mcu_y;
- int img_mcu_w, img_mcu_h;
-
-// definition of jpeg image component
- struct
- {
- int id;
- int h,v;
- int tq;
- int hd,ha;
- int dc_pred;
-
- int x,y,w2,h2;
- stbi_uc *data;
- void *raw_data;
- stbi_uc *linebuf;
- } img_comp[4];
-
- stbi__uint32 code_buffer; // jpeg entropy-coded buffer
- int code_bits; // number of valid bits
- unsigned char marker; // marker seen while filling entropy buffer
- int nomore; // flag if we saw a marker so must stop
-
- int scan_n, order[4];
- int restart_interval, todo;
-} stbi__jpeg;
-
-static int stbi__build_huffman(stbi__huffman *h, int *count)
-{
- int i,j,k=0,code;
- // build size list for each symbol (from JPEG spec)
- for (i=0; i < 16; ++i)
- for (j=0; j < count[i]; ++j)
- h->size[k++] = (stbi_uc) (i+1);
- h->size[k] = 0;
-
- // compute actual symbols (from jpeg spec)
- code = 0;
- k = 0;
- for(j=1; j <= 16; ++j) {
- // compute delta to add to code to compute symbol id
- h->delta[j] = k - code;
- if (h->size[k] == j) {
- while (h->size[k] == j)
- h->code[k++] = (stbi__uint16) (code++);
- if (code-1 >= (1 << j)) return stbi__err("bad code lengths","Corrupt JPEG");
- }
- // compute largest code + 1 for this size, preshifted as needed later
- h->maxcode[j] = code << (16-j);
- code <<= 1;
- }
- h->maxcode[j] = 0xffffffff;
-
- // build non-spec acceleration table; 255 is flag for not-accelerated
- memset(h->fast, 255, 1 << FAST_BITS);
- for (i=0; i < k; ++i) {
- int s = h->size[i];
- if (s <= FAST_BITS) {
- int c = h->code[i] << (FAST_BITS-s);
- int m = 1 << (FAST_BITS-s);
- for (j=0; j < m; ++j) {
- h->fast[c+j] = (stbi_uc) i;
- }
- }
- }
- return 1;
-}
-
-static void stbi__grow_buffer_unsafe(stbi__jpeg *j)
-{
- do {
- int b = j->nomore ? 0 : stbi__get8(j->s);
- if (b == 0xff) {
- int c = stbi__get8(j->s);
- if (c != 0) {
- j->marker = (unsigned char) c;
- j->nomore = 1;
- return;
- }
- }
- j->code_buffer |= b << (24 - j->code_bits);
- j->code_bits += 8;
- } while (j->code_bits <= 24);
-}
-
-// (1 << n) - 1
-static stbi__uint32 stbi__bmask[17]={0,1,3,7,15,31,63,127,255,511,1023,2047,4095,8191,16383,32767,65535};
-
-// decode a jpeg huffman value from the bitstream
-stbi_inline static int stbi__jpeg_huff_decode(stbi__jpeg *j, stbi__huffman *h)
-{
- unsigned int temp;
- int c,k;
-
- if (j->code_bits < 16) stbi__grow_buffer_unsafe(j);
-
- // look at the top FAST_BITS and determine what symbol ID it is,
- // if the code is <= FAST_BITS
- c = (j->code_buffer >> (32 - FAST_BITS)) & ((1 << FAST_BITS)-1);
- k = h->fast[c];
- if (k < 255) {
- int s = h->size[k];
- if (s > j->code_bits)
- return -1;
- j->code_buffer <<= s;
- j->code_bits -= s;
- return h->values[k];
- }
-
- // naive test is to shift the code_buffer down so k bits are
- // valid, then test against maxcode. To speed this up, we've
- // preshifted maxcode left so that it has (16-k) 0s at the
- // end; in other words, regardless of the number of bits, it
- // wants to be compared against something shifted to have 16;
- // that way we don't need to shift inside the loop.
- temp = j->code_buffer >> 16;
- for (k=FAST_BITS+1 ; ; ++k)
- if (temp < h->maxcode[k])
- break;
- if (k == 17) {
- // error! code not found
- j->code_bits -= 16;
- return -1;
- }
-
- if (k > j->code_bits)
- return -1;
-
- // convert the huffman code to the symbol id
- c = ((j->code_buffer >> (32 - k)) & stbi__bmask[k]) + h->delta[k];
- STBI_ASSERT((((j->code_buffer) >> (32 - h->size[c])) & stbi__bmask[h->size[c]]) == h->code[c]);
-
- // convert the id to a symbol
- j->code_bits -= k;
- j->code_buffer <<= k;
- return h->values[c];
-}
-
-// combined JPEG 'receive' and JPEG 'extend', since baseline
-// always extends everything it receives.
-stbi_inline static int stbi__extend_receive(stbi__jpeg *j, int n)
-{
- unsigned int m = 1 << (n-1);
- unsigned int k;
- if (j->code_bits < n) stbi__grow_buffer_unsafe(j);
-
- #if 1
- k = stbi_lrot(j->code_buffer, n);
- j->code_buffer = k & ~stbi__bmask[n];
- k &= stbi__bmask[n];
- j->code_bits -= n;
- #else
- k = (j->code_buffer >> (32 - n)) & stbi__bmask[n];
- j->code_bits -= n;
- j->code_buffer <<= n;
- #endif
- // the following test is probably a random branch that won't
- // predict well. I tried to table accelerate it but failed.
- // maybe it's compiling as a conditional move?
- if (k < m)
- return (-1 << n) + k + 1;
- else
- return k;
-}
-
-// given a value that's at position X in the zigzag stream,
-// where does it appear in the 8x8 matrix coded as row-major?
-static stbi_uc stbi__jpeg_dezigzag[64+15] =
-{
- 0, 1, 8, 16, 9, 2, 3, 10,
- 17, 24, 32, 25, 18, 11, 4, 5,
- 12, 19, 26, 33, 40, 48, 41, 34,
- 27, 20, 13, 6, 7, 14, 21, 28,
- 35, 42, 49, 56, 57, 50, 43, 36,
- 29, 22, 15, 23, 30, 37, 44, 51,
- 58, 59, 52, 45, 38, 31, 39, 46,
- 53, 60, 61, 54, 47, 55, 62, 63,
- // let corrupt input sample past end
- 63, 63, 63, 63, 63, 63, 63, 63,
- 63, 63, 63, 63, 63, 63, 63
-};
-
-// decode one 64-entry block--
-static int stbi__jpeg_decode_block(stbi__jpeg *j, short data[64], stbi__huffman *hdc, stbi__huffman *hac, int b)
-{
- int diff,dc,k;
- int t = stbi__jpeg_huff_decode(j, hdc);
- if (t < 0) return stbi__err("bad huffman code","Corrupt JPEG");
-
- // 0 all the ac values now so we can do it 32-bits at a time
- memset(data,0,64*sizeof(data[0]));
-
- diff = t ? stbi__extend_receive(j, t) : 0;
- dc = j->img_comp[b].dc_pred + diff;
- j->img_comp[b].dc_pred = dc;
- data[0] = (short) dc;
-
- // decode AC components, see JPEG spec
- k = 1;
- do {
- int r,s;
- int rs = stbi__jpeg_huff_decode(j, hac);
- if (rs < 0) return stbi__err("bad huffman code","Corrupt JPEG");
- s = rs & 15;
- r = rs >> 4;
- if (s == 0) {
- if (rs != 0xf0) break; // end block
- k += 16;
- } else {
- k += r;
- // decode into unzigzag'd location
- data[stbi__jpeg_dezigzag[k++]] = (short) stbi__extend_receive(j,s);
- }
- } while (k < 64);
- return 1;
-}
-
-// take a -128..127 value and stbi__clamp it and convert to 0..255
-stbi_inline static stbi_uc stbi__clamp(int x)
-{
- // trick to use a single test to catch both cases
- if ((unsigned int) x > 255) {
- if (x < 0) return 0;
- if (x > 255) return 255;
- }
- return (stbi_uc) x;
-}
-
-#define stbi__f2f(x) (int) (((x) * 4096 + 0.5))
-#define stbi__fsh(x) ((x) << 12)
-
-// derived from jidctint -- DCT_ISLOW
-#define STBI__IDCT_1D(s0,s1,s2,s3,s4,s5,s6,s7) \
- int t0,t1,t2,t3,p1,p2,p3,p4,p5,x0,x1,x2,x3; \
- p2 = s2; \
- p3 = s6; \
- p1 = (p2+p3) * stbi__f2f(0.5411961f); \
- t2 = p1 + p3*stbi__f2f(-1.847759065f); \
- t3 = p1 + p2*stbi__f2f( 0.765366865f); \
- p2 = s0; \
- p3 = s4; \
- t0 = stbi__fsh(p2+p3); \
- t1 = stbi__fsh(p2-p3); \
- x0 = t0+t3; \
- x3 = t0-t3; \
- x1 = t1+t2; \
- x2 = t1-t2; \
- t0 = s7; \
- t1 = s5; \
- t2 = s3; \
- t3 = s1; \
- p3 = t0+t2; \
- p4 = t1+t3; \
- p1 = t0+t3; \
- p2 = t1+t2; \
- p5 = (p3+p4)*stbi__f2f( 1.175875602f); \
- t0 = t0*stbi__f2f( 0.298631336f); \
- t1 = t1*stbi__f2f( 2.053119869f); \
- t2 = t2*stbi__f2f( 3.072711026f); \
- t3 = t3*stbi__f2f( 1.501321110f); \
- p1 = p5 + p1*stbi__f2f(-0.899976223f); \
- p2 = p5 + p2*stbi__f2f(-2.562915447f); \
- p3 = p3*stbi__f2f(-1.961570560f); \
- p4 = p4*stbi__f2f(-0.390180644f); \
- t3 += p1+p4; \
- t2 += p2+p3; \
- t1 += p2+p4; \
- t0 += p1+p3;
-
-#ifdef STBI_SIMD
-typedef unsigned short stbi_dequantize_t;
-#else
-typedef stbi_uc stbi_dequantize_t;
-#endif
-
-// .344 seconds on 3*anemones.jpg
-static void stbi__idct_block(stbi_uc *out, int out_stride, short data[64], stbi_dequantize_t *dequantize)
-{
- int i,val[64],*v=val;
- stbi_dequantize_t *dq = dequantize;
- stbi_uc *o;
- short *d = data;
-
- // columns
- for (i=0; i < 8; ++i,++d,++dq, ++v) {
- // if all zeroes, shortcut -- this avoids dequantizing 0s and IDCTing
- if (d[ 8]==0 && d[16]==0 && d[24]==0 && d[32]==0
- && d[40]==0 && d[48]==0 && d[56]==0) {
- // no shortcut 0 seconds
- // (1|2|3|4|5|6|7)==0 0 seconds
- // all separate -0.047 seconds
- // 1 && 2|3 && 4|5 && 6|7: -0.047 seconds
- int dcterm = d[0] * dq[0] << 2;
- v[0] = v[8] = v[16] = v[24] = v[32] = v[40] = v[48] = v[56] = dcterm;
- } else {
- STBI__IDCT_1D(d[ 0]*dq[ 0],d[ 8]*dq[ 8],d[16]*dq[16],d[24]*dq[24],
- d[32]*dq[32],d[40]*dq[40],d[48]*dq[48],d[56]*dq[56])
- // constants scaled things up by 1<<12; let's bring them back
- // down, but keep 2 extra bits of precision
- x0 += 512; x1 += 512; x2 += 512; x3 += 512;
- v[ 0] = (x0+t3) >> 10;
- v[56] = (x0-t3) >> 10;
- v[ 8] = (x1+t2) >> 10;
- v[48] = (x1-t2) >> 10;
- v[16] = (x2+t1) >> 10;
- v[40] = (x2-t1) >> 10;
- v[24] = (x3+t0) >> 10;
- v[32] = (x3-t0) >> 10;
- }
- }
-
- for (i=0, v=val, o=out; i < 8; ++i,v+=8,o+=out_stride) {
- // no fast case since the first 1D IDCT spread components out
- STBI__IDCT_1D(v[0],v[1],v[2],v[3],v[4],v[5],v[6],v[7])
- // constants scaled things up by 1<<12, plus we had 1<<2 from first
- // loop, plus horizontal and vertical each scale by sqrt(8) so together
- // we've got an extra 1<<3, so 1<<17 total we need to remove.
- // so we want to round that, which means adding 0.5 * 1<<17,
- // aka 65536. Also, we'll end up with -128 to 127 that we want
- // to encode as 0..255 by adding 128, so we'll add that before the shift
- x0 += 65536 + (128<<17);
- x1 += 65536 + (128<<17);
- x2 += 65536 + (128<<17);
- x3 += 65536 + (128<<17);
- // tried computing the shifts into temps, or'ing the temps to see
- // if any were out of range, but that was slower
- o[0] = stbi__clamp((x0+t3) >> 17);
- o[7] = stbi__clamp((x0-t3) >> 17);
- o[1] = stbi__clamp((x1+t2) >> 17);
- o[6] = stbi__clamp((x1-t2) >> 17);
- o[2] = stbi__clamp((x2+t1) >> 17);
- o[5] = stbi__clamp((x2-t1) >> 17);
- o[3] = stbi__clamp((x3+t0) >> 17);
- o[4] = stbi__clamp((x3-t0) >> 17);
- }
-}
-
-#ifdef STBI_SIMD
-static stbi_idct_8x8 stbi__idct_installed = stbi__idct_block;
-
-STBIDEF void stbi_install_idct(stbi_idct_8x8 func)
-{
- stbi__idct_installed = func;
-}
-#endif
-
-#define STBI__MARKER_none 0xff
-// if there's a pending marker from the entropy stream, return that
-// otherwise, fetch from the stream and get a marker. if there's no
-// marker, return 0xff, which is never a valid marker value
-static stbi_uc stbi__get_marker(stbi__jpeg *j)
-{
- stbi_uc x;
- if (j->marker != STBI__MARKER_none) { x = j->marker; j->marker = STBI__MARKER_none; return x; }
- x = stbi__get8(j->s);
- if (x != 0xff) return STBI__MARKER_none;
- while (x == 0xff)
- x = stbi__get8(j->s);
- return x;
-}
-
-// in each scan, we'll have scan_n components, and the order
-// of the components is specified by order[]
-#define STBI__RESTART(x) ((x) >= 0xd0 && (x) <= 0xd7)
-
-// after a restart interval, stbi__jpeg_reset the entropy decoder and
-// the dc prediction
-static void stbi__jpeg_reset(stbi__jpeg *j)
-{
- j->code_bits = 0;
- j->code_buffer = 0;
- j->nomore = 0;
- j->img_comp[0].dc_pred = j->img_comp[1].dc_pred = j->img_comp[2].dc_pred = 0;
- j->marker = STBI__MARKER_none;
- j->todo = j->restart_interval ? j->restart_interval : 0x7fffffff;
- // no more than 1<<31 MCUs if no restart_interal? that's plenty safe,
- // since we don't even allow 1<<30 pixels
-}
-
-static int stbi__parse_entropy_coded_data(stbi__jpeg *z)
-{
- stbi__jpeg_reset(z);
- if (z->scan_n == 1) {
- int i,j;
- #ifdef STBI_SIMD
- __declspec(align(16))
- #endif
- short data[64];
- int n = z->order[0];
- // non-interleaved data, we just need to process one block at a time,
- // in trivial scanline order
- // number of blocks to do just depends on how many actual "pixels" this
- // component has, independent of interleaved MCU blocking and such
- int w = (z->img_comp[n].x+7) >> 3;
- int h = (z->img_comp[n].y+7) >> 3;
- for (j=0; j < h; ++j) {
- for (i=0; i < w; ++i) {
- if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+z->img_comp[n].ha, n)) return 0;
- #ifdef STBI_SIMD
- stbi__idct_installed(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data, z->dequant2[z->img_comp[n].tq]);
- #else
- stbi__idct_block(z->img_comp[n].data+z->img_comp[n].w2*j*8+i*8, z->img_comp[n].w2, data, z->dequant[z->img_comp[n].tq]);
- #endif
- // every data block is an MCU, so countdown the restart interval
- if (--z->todo <= 0) {
- if (z->code_bits < 24) stbi__grow_buffer_unsafe(z);
- // if it's NOT a restart, then just bail, so we get corrupt data
- // rather than no data
- if (!STBI__RESTART(z->marker)) return 1;
- stbi__jpeg_reset(z);
- }
- }
- }
- } else { // interleaved!
- int i,j,k,x,y;
- short data[64];
- for (j=0; j < z->img_mcu_y; ++j) {
- for (i=0; i < z->img_mcu_x; ++i) {
- // scan an interleaved mcu... process scan_n components in order
- for (k=0; k < z->scan_n; ++k) {
- int n = z->order[k];
- // scan out an mcu's worth of this component; that's just determined
- // by the basic H and V specified for the component
- for (y=0; y < z->img_comp[n].v; ++y) {
- for (x=0; x < z->img_comp[n].h; ++x) {
- int x2 = (i*z->img_comp[n].h + x)*8;
- int y2 = (j*z->img_comp[n].v + y)*8;
- if (!stbi__jpeg_decode_block(z, data, z->huff_dc+z->img_comp[n].hd, z->huff_ac+z->img_comp[n].ha, n)) return 0;
- #ifdef STBI_SIMD
- stbi__idct_installed(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data, z->dequant2[z->img_comp[n].tq]);
- #else
- stbi__idct_block(z->img_comp[n].data+z->img_comp[n].w2*y2+x2, z->img_comp[n].w2, data, z->dequant[z->img_comp[n].tq]);
- #endif
- }
- }
- }
- // after all interleaved components, that's an interleaved MCU,
- // so now count down the restart interval
- if (--z->todo <= 0) {
- if (z->code_bits < 24) stbi__grow_buffer_unsafe(z);
- // if it's NOT a restart, then just bail, so we get corrupt data
- // rather than no data
- if (!STBI__RESTART(z->marker)) return 1;
- stbi__jpeg_reset(z);
- }
- }
- }
- }
- return 1;
-}
-
-static int stbi__process_marker(stbi__jpeg *z, int m)
-{
- int L;
- switch (m) {
- case STBI__MARKER_none: // no marker found
- return stbi__err("expected marker","Corrupt JPEG");
-
- case 0xC2: // stbi__SOF - progressive
- return stbi__err("progressive jpeg","JPEG format not supported (progressive)");
-
- case 0xDD: // DRI - specify restart interval
- if (stbi__get16be(z->s) != 4) return stbi__err("bad DRI len","Corrupt JPEG");
- z->restart_interval = stbi__get16be(z->s);
- return 1;
-
- case 0xDB: // DQT - define quantization table
- L = stbi__get16be(z->s)-2;
- while (L > 0) {
- int q = stbi__get8(z->s);
- int p = q >> 4;
- int t = q & 15,i;
- if (p != 0) return stbi__err("bad DQT type","Corrupt JPEG");
- if (t > 3) return stbi__err("bad DQT table","Corrupt JPEG");
- for (i=0; i < 64; ++i)
- z->dequant[t][stbi__jpeg_dezigzag[i]] = stbi__get8(z->s);
- #ifdef STBI_SIMD
- for (i=0; i < 64; ++i)
- z->dequant2[t][i] = z->dequant[t][i];
- #endif
- L -= 65;
- }
- return L==0;
-
- case 0xC4: // DHT - define huffman table
- L = stbi__get16be(z->s)-2;
- while (L > 0) {
- stbi_uc *v;
- int sizes[16],i,n=0;
- int q = stbi__get8(z->s);
- int tc = q >> 4;
- int th = q & 15;
- if (tc > 1 || th > 3) return stbi__err("bad DHT header","Corrupt JPEG");
- for (i=0; i < 16; ++i) {
- sizes[i] = stbi__get8(z->s);
- n += sizes[i];
- }
- L -= 17;
- if (tc == 0) {
- if (!stbi__build_huffman(z->huff_dc+th, sizes)) return 0;
- v = z->huff_dc[th].values;
- } else {
- if (!stbi__build_huffman(z->huff_ac+th, sizes)) return 0;
- v = z->huff_ac[th].values;
- }
- for (i=0; i < n; ++i)
- v[i] = stbi__get8(z->s);
- L -= n;
- }
- return L==0;
- }
- // check for comment block or APP blocks
- if ((m >= 0xE0 && m <= 0xEF) || m == 0xFE) {
- stbi__skip(z->s, stbi__get16be(z->s)-2);
- return 1;
- }
- return 0;
-}
-
-// after we see stbi__SOS
-static int stbi__process_scan_header(stbi__jpeg *z)
-{
- int i;
- int Ls = stbi__get16be(z->s);
- z->scan_n = stbi__get8(z->s);
- if (z->scan_n < 1 || z->scan_n > 4 || z->scan_n > (int) z->s->img_n) return stbi__err("bad stbi__SOS component count","Corrupt JPEG");
- if (Ls != 6+2*z->scan_n) return stbi__err("bad stbi__SOS len","Corrupt JPEG");
- for (i=0; i < z->scan_n; ++i) {
- int id = stbi__get8(z->s), which;
- int q = stbi__get8(z->s);
- for (which = 0; which < z->s->img_n; ++which)
- if (z->img_comp[which].id == id)
- break;
- if (which == z->s->img_n) return 0;
- z->img_comp[which].hd = q >> 4; if (z->img_comp[which].hd > 3) return stbi__err("bad DC huff","Corrupt JPEG");
- z->img_comp[which].ha = q & 15; if (z->img_comp[which].ha > 3) return stbi__err("bad AC huff","Corrupt JPEG");
- z->order[i] = which;
- }
- if (stbi__get8(z->s) != 0) return stbi__err("bad stbi__SOS","Corrupt JPEG");
- stbi__get8(z->s); // should be 63, but might be 0
- if (stbi__get8(z->s) != 0) return stbi__err("bad stbi__SOS","Corrupt JPEG");
-
- return 1;
-}
-
-static int stbi__process_frame_header(stbi__jpeg *z, int scan)
-{
- stbi__context *s = z->s;
- int Lf,p,i,q, h_max=1,v_max=1,c;
- Lf = stbi__get16be(s); if (Lf < 11) return stbi__err("bad stbi__SOF len","Corrupt JPEG"); // JPEG
- p = stbi__get8(s); if (p != 8) return stbi__err("only 8-bit","JPEG format not supported: 8-bit only"); // JPEG baseline
- s->img_y = stbi__get16be(s); if (s->img_y == 0) return stbi__err("no header height", "JPEG format not supported: delayed height"); // Legal, but we don't handle it--but neither does IJG
- s->img_x = stbi__get16be(s); if (s->img_x == 0) return stbi__err("0 width","Corrupt JPEG"); // JPEG requires
- c = stbi__get8(s);
- if (c != 3 && c != 1) return stbi__err("bad component count","Corrupt JPEG"); // JFIF requires
- s->img_n = c;
- for (i=0; i < c; ++i) {
- z->img_comp[i].data = NULL;
- z->img_comp[i].linebuf = NULL;
- }
-
- if (Lf != 8+3*s->img_n) return stbi__err("bad stbi__SOF len","Corrupt JPEG");
-
- for (i=0; i < s->img_n; ++i) {
- z->img_comp[i].id = stbi__get8(s);
- if (z->img_comp[i].id != i+1) // JFIF requires
- if (z->img_comp[i].id != i) // some version of jpegtran outputs non-JFIF-compliant files!
- return stbi__err("bad component ID","Corrupt JPEG");
- q = stbi__get8(s);
- z->img_comp[i].h = (q >> 4); if (!z->img_comp[i].h || z->img_comp[i].h > 4) return stbi__err("bad H","Corrupt JPEG");
- z->img_comp[i].v = q & 15; if (!z->img_comp[i].v || z->img_comp[i].v > 4) return stbi__err("bad V","Corrupt JPEG");
- z->img_comp[i].tq = stbi__get8(s); if (z->img_comp[i].tq > 3) return stbi__err("bad TQ","Corrupt JPEG");
- }
-
- if (scan != SCAN_load) return 1;
-
- if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode");
-
- for (i=0; i < s->img_n; ++i) {
- if (z->img_comp[i].h > h_max) h_max = z->img_comp[i].h;
- if (z->img_comp[i].v > v_max) v_max = z->img_comp[i].v;
- }
-
- // compute interleaved mcu info
- z->img_h_max = h_max;
- z->img_v_max = v_max;
- z->img_mcu_w = h_max * 8;
- z->img_mcu_h = v_max * 8;
- z->img_mcu_x = (s->img_x + z->img_mcu_w-1) / z->img_mcu_w;
- z->img_mcu_y = (s->img_y + z->img_mcu_h-1) / z->img_mcu_h;
-
- for (i=0; i < s->img_n; ++i) {
- // number of effective pixels (e.g. for non-interleaved MCU)
- z->img_comp[i].x = (s->img_x * z->img_comp[i].h + h_max-1) / h_max;
- z->img_comp[i].y = (s->img_y * z->img_comp[i].v + v_max-1) / v_max;
- // to simplify generation, we'll allocate enough memory to decode
- // the bogus oversized data from using interleaved MCUs and their
- // big blocks (e.g. a 16x16 iMCU on an image of width 33); we won't
- // discard the extra data until colorspace conversion
- z->img_comp[i].w2 = z->img_mcu_x * z->img_comp[i].h * 8;
- z->img_comp[i].h2 = z->img_mcu_y * z->img_comp[i].v * 8;
- z->img_comp[i].raw_data = stbi__malloc(z->img_comp[i].w2 * z->img_comp[i].h2+15);
- if (z->img_comp[i].raw_data == NULL) {
- for(--i; i >= 0; --i) {
- free(z->img_comp[i].raw_data);
- z->img_comp[i].data = NULL;
- }
- return stbi__err("outofmem", "Out of memory");
- }
- // align blocks for installable-idct using mmx/sse
- z->img_comp[i].data = (stbi_uc*) (((size_t) z->img_comp[i].raw_data + 15) & ~15);
- z->img_comp[i].linebuf = NULL;
- }
-
- return 1;
-}
-
-// use comparisons since in some cases we handle more than one case (e.g. stbi__SOF)
-#define stbi__DNL(x) ((x) == 0xdc)
-#define stbi__SOI(x) ((x) == 0xd8)
-#define stbi__EOI(x) ((x) == 0xd9)
-#define stbi__SOF(x) ((x) == 0xc0 || (x) == 0xc1)
-#define stbi__SOS(x) ((x) == 0xda)
-
-static int decode_jpeg_header(stbi__jpeg *z, int scan)
-{
- int m;
- z->marker = STBI__MARKER_none; // initialize cached marker to empty
- m = stbi__get_marker(z);
- if (!stbi__SOI(m)) return stbi__err("no stbi__SOI","Corrupt JPEG");
- if (scan == SCAN_type) return 1;
- m = stbi__get_marker(z);
- while (!stbi__SOF(m)) {
- if (!stbi__process_marker(z,m)) return 0;
- m = stbi__get_marker(z);
- while (m == STBI__MARKER_none) {
- // some files have extra padding after their blocks, so ok, we'll scan
- if (stbi__at_eof(z->s)) return stbi__err("no stbi__SOF", "Corrupt JPEG");
- m = stbi__get_marker(z);
- }
- }
- if (!stbi__process_frame_header(z, scan)) return 0;
- return 1;
-}
-
-static int decode_jpeg_image(stbi__jpeg *j)
-{
- int m;
- j->restart_interval = 0;
- if (!decode_jpeg_header(j, SCAN_load)) return 0;
- m = stbi__get_marker(j);
- while (!stbi__EOI(m)) {
- if (stbi__SOS(m)) {
- if (!stbi__process_scan_header(j)) return 0;
- if (!stbi__parse_entropy_coded_data(j)) return 0;
- if (j->marker == STBI__MARKER_none ) {
- // handle 0s at the end of image data from IP Kamera 9060
- while (!stbi__at_eof(j->s)) {
- int x = stbi__get8(j->s);
- if (x == 255) {
- j->marker = stbi__get8(j->s);
- break;
- } else if (x != 0) {
- return 0;
- }
- }
- // if we reach eof without hitting a marker, stbi__get_marker() below will fail and we'll eventually return 0
- }
- } else {
- if (!stbi__process_marker(j, m)) return 0;
- }
- m = stbi__get_marker(j);
- }
- return 1;
-}
-
-// static jfif-centered resampling (across block boundaries)
-
-typedef stbi_uc *(*resample_row_func)(stbi_uc *out, stbi_uc *in0, stbi_uc *in1,
- int w, int hs);
-
-#define stbi__div4(x) ((stbi_uc) ((x) >> 2))
-
-static stbi_uc *resample_row_1(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs)
-{
- STBI_NOTUSED(out);
- STBI_NOTUSED(in_far);
- STBI_NOTUSED(w);
- STBI_NOTUSED(hs);
- return in_near;
-}
-
-static stbi_uc* stbi__resample_row_v_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs)
-{
- // need to generate two samples vertically for every one in input
- int i;
- STBI_NOTUSED(hs);
- for (i=0; i < w; ++i)
- out[i] = stbi__div4(3*in_near[i] + in_far[i] + 2);
- return out;
-}
-
-static stbi_uc* stbi__resample_row_h_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs)
-{
- // need to generate two samples horizontally for every one in input
- int i;
- stbi_uc *input = in_near;
-
- if (w == 1) {
- // if only one sample, can't do any interpolation
- out[0] = out[1] = input[0];
- return out;
- }
-
- out[0] = input[0];
- out[1] = stbi__div4(input[0]*3 + input[1] + 2);
- for (i=1; i < w-1; ++i) {
- int n = 3*input[i]+2;
- out[i*2+0] = stbi__div4(n+input[i-1]);
- out[i*2+1] = stbi__div4(n+input[i+1]);
- }
- out[i*2+0] = stbi__div4(input[w-2]*3 + input[w-1] + 2);
- out[i*2+1] = input[w-1];
-
- STBI_NOTUSED(in_far);
- STBI_NOTUSED(hs);
-
- return out;
-}
-
-#define stbi__div16(x) ((stbi_uc) ((x) >> 4))
-
-static stbi_uc *stbi__resample_row_hv_2(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs)
-{
- // need to generate 2x2 samples for every one in input
- int i,t0,t1;
- if (w == 1) {
- out[0] = out[1] = stbi__div4(3*in_near[0] + in_far[0] + 2);
- return out;
- }
-
- t1 = 3*in_near[0] + in_far[0];
- out[0] = stbi__div4(t1+2);
- for (i=1; i < w; ++i) {
- t0 = t1;
- t1 = 3*in_near[i]+in_far[i];
- out[i*2-1] = stbi__div16(3*t0 + t1 + 8);
- out[i*2 ] = stbi__div16(3*t1 + t0 + 8);
- }
- out[w*2-1] = stbi__div4(t1+2);
-
- STBI_NOTUSED(hs);
-
- return out;
-}
-
-static stbi_uc *stbi__resample_row_generic(stbi_uc *out, stbi_uc *in_near, stbi_uc *in_far, int w, int hs)
-{
- // resample with nearest-neighbor
- int i,j;
- STBI_NOTUSED(in_far);
- for (i=0; i < w; ++i)
- for (j=0; j < hs; ++j)
- out[i*hs+j] = in_near[i];
- return out;
-}
-
-#define float2fixed(x) ((int) ((x) * 65536 + 0.5))
-
-// 0.38 seconds on 3*anemones.jpg (0.25 with processor = Pro)
-// VC6 without processor=Pro is generating multiple LEAs per multiply!
-static void stbi__YCbCr_to_RGB_row(stbi_uc *out, const stbi_uc *y, const stbi_uc *pcb, const stbi_uc *pcr, int count, int step)
-{
- int i;
- for (i=0; i < count; ++i) {
- int y_fixed = (y[i] << 16) + 32768; // rounding
- int r,g,b;
- int cr = pcr[i] - 128;
- int cb = pcb[i] - 128;
- r = y_fixed + cr*float2fixed(1.40200f);
- g = y_fixed - cr*float2fixed(0.71414f) - cb*float2fixed(0.34414f);
- b = y_fixed + cb*float2fixed(1.77200f);
- r >>= 16;
- g >>= 16;
- b >>= 16;
- if ((unsigned) r > 255) { if (r < 0) r = 0; else r = 255; }
- if ((unsigned) g > 255) { if (g < 0) g = 0; else g = 255; }
- if ((unsigned) b > 255) { if (b < 0) b = 0; else b = 255; }
- out[0] = (stbi_uc)r;
- out[1] = (stbi_uc)g;
- out[2] = (stbi_uc)b;
- out[3] = 255;
- out += step;
- }
-}
-
-#ifdef STBI_SIMD
-static stbi_YCbCr_to_RGB_run stbi__YCbCr_installed = stbi__YCbCr_to_RGB_row;
-
-STBIDEF void stbi_install_YCbCr_to_RGB(stbi_YCbCr_to_RGB_run func)
-{
- stbi__YCbCr_installed = func;
-}
-#endif
-
-
-// clean up the temporary component buffers
-static void stbi__cleanup_jpeg(stbi__jpeg *j)
-{
- int i;
- for (i=0; i < j->s->img_n; ++i) {
- if (j->img_comp[i].raw_data) {
- free(j->img_comp[i].raw_data);
- j->img_comp[i].raw_data = NULL;
- j->img_comp[i].data = NULL;
- }
- if (j->img_comp[i].linebuf) {
- free(j->img_comp[i].linebuf);
- j->img_comp[i].linebuf = NULL;
- }
- }
-}
-
-typedef struct
-{
- resample_row_func resample;
- stbi_uc *line0,*line1;
- int hs,vs; // expansion factor in each axis
- int w_lores; // horizontal pixels pre-expansion
- int ystep; // how far through vertical expansion we are
- int ypos; // which pre-expansion row we're on
-} stbi__resample;
-
-static stbi_uc *load_jpeg_image(stbi__jpeg *z, int *out_x, int *out_y, int *comp, int req_comp)
-{
- int n, decode_n;
- z->s->img_n = 0; // make stbi__cleanup_jpeg safe
-
- // validate req_comp
- if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error");
-
- // load a jpeg image from whichever source
- if (!decode_jpeg_image(z)) { stbi__cleanup_jpeg(z); return NULL; }
-
- // determine actual number of components to generate
- n = req_comp ? req_comp : z->s->img_n;
-
- if (z->s->img_n == 3 && n < 3)
- decode_n = 1;
- else
- decode_n = z->s->img_n;
-
- // resample and color-convert
- {
- int k;
- unsigned int i,j;
- stbi_uc *output;
- stbi_uc *coutput[4];
-
- stbi__resample res_comp[4];
-
- for (k=0; k < decode_n; ++k) {
- stbi__resample *r = &res_comp[k];
-
- // allocate line buffer big enough for upsampling off the edges
- // with upsample factor of 4
- z->img_comp[k].linebuf = (stbi_uc *) stbi__malloc(z->s->img_x + 3);
- if (!z->img_comp[k].linebuf) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); }
-
- r->hs = z->img_h_max / z->img_comp[k].h;
- r->vs = z->img_v_max / z->img_comp[k].v;
- r->ystep = r->vs >> 1;
- r->w_lores = (z->s->img_x + r->hs-1) / r->hs;
- r->ypos = 0;
- r->line0 = r->line1 = z->img_comp[k].data;
-
- if (r->hs == 1 && r->vs == 1) r->resample = resample_row_1;
- else if (r->hs == 1 && r->vs == 2) r->resample = stbi__resample_row_v_2;
- else if (r->hs == 2 && r->vs == 1) r->resample = stbi__resample_row_h_2;
- else if (r->hs == 2 && r->vs == 2) r->resample = stbi__resample_row_hv_2;
- else r->resample = stbi__resample_row_generic;
- }
-
- // can't error after this so, this is safe
- output = (stbi_uc *) stbi__malloc(n * z->s->img_x * z->s->img_y + 1);
- if (!output) { stbi__cleanup_jpeg(z); return stbi__errpuc("outofmem", "Out of memory"); }
-
- // now go ahead and resample
- for (j=0; j < z->s->img_y; ++j) {
- stbi_uc *out = output + n * z->s->img_x * j;
- for (k=0; k < decode_n; ++k) {
- stbi__resample *r = &res_comp[k];
- int y_bot = r->ystep >= (r->vs >> 1);
- coutput[k] = r->resample(z->img_comp[k].linebuf,
- y_bot ? r->line1 : r->line0,
- y_bot ? r->line0 : r->line1,
- r->w_lores, r->hs);
- if (++r->ystep >= r->vs) {
- r->ystep = 0;
- r->line0 = r->line1;
- if (++r->ypos < z->img_comp[k].y)
- r->line1 += z->img_comp[k].w2;
- }
- }
- if (n >= 3) {
- stbi_uc *y = coutput[0];
- if (z->s->img_n == 3) {
- #ifdef STBI_SIMD
- stbi__YCbCr_installed(out, y, coutput[1], coutput[2], z->s->img_x, n);
- #else
- stbi__YCbCr_to_RGB_row(out, y, coutput[1], coutput[2], z->s->img_x, n);
- #endif
- } else
- for (i=0; i < z->s->img_x; ++i) {
- out[0] = out[1] = out[2] = y[i];
- out[3] = 255; // not used if n==3
- out += n;
- }
- } else {
- stbi_uc *y = coutput[0];
- if (n == 1)
- for (i=0; i < z->s->img_x; ++i) out[i] = y[i];
- else
- for (i=0; i < z->s->img_x; ++i) *out++ = y[i], *out++ = 255;
- }
- }
- stbi__cleanup_jpeg(z);
- *out_x = z->s->img_x;
- *out_y = z->s->img_y;
- if (comp) *comp = z->s->img_n; // report original components, not output
- return output;
- }
-}
-
-static unsigned char *stbi__jpeg_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- stbi__jpeg j;
- j.s = s;
- return load_jpeg_image(&j, x,y,comp,req_comp);
-}
-
-static int stbi__jpeg_test(stbi__context *s)
-{
- int r;
- stbi__jpeg j;
- j.s = s;
- r = decode_jpeg_header(&j, SCAN_type);
- stbi__rewind(s);
- return r;
-}
-
-static int stbi__jpeg_info_raw(stbi__jpeg *j, int *x, int *y, int *comp)
-{
- if (!decode_jpeg_header(j, SCAN_header)) {
- stbi__rewind( j->s );
- return 0;
- }
- if (x) *x = j->s->img_x;
- if (y) *y = j->s->img_y;
- if (comp) *comp = j->s->img_n;
- return 1;
-}
-
-static int stbi__jpeg_info(stbi__context *s, int *x, int *y, int *comp)
-{
- stbi__jpeg j;
- j.s = s;
- return stbi__jpeg_info_raw(&j, x, y, comp);
-}
-
-// public domain zlib decode v0.2 Sean Barrett 2006-11-18
-// simple implementation
-// - all input must be provided in an upfront buffer
-// - all output is written to a single output buffer (can malloc/realloc)
-// performance
-// - fast huffman
-
-// fast-way is faster to check than jpeg huffman, but slow way is slower
-#define STBI__ZFAST_BITS 9 // accelerate all cases in default tables
-#define STBI__ZFAST_MASK ((1 << STBI__ZFAST_BITS) - 1)
-
-// zlib-style huffman encoding
-// (jpegs packs from left, zlib from right, so can't share code)
-typedef struct
-{
- stbi__uint16 fast[1 << STBI__ZFAST_BITS];
- stbi__uint16 firstcode[16];
- int maxcode[17];
- stbi__uint16 firstsymbol[16];
- stbi_uc size[288];
- stbi__uint16 value[288];
-} stbi__zhuffman;
-
-stbi_inline static int stbi__bitreverse16(int n)
-{
- n = ((n & 0xAAAA) >> 1) | ((n & 0x5555) << 1);
- n = ((n & 0xCCCC) >> 2) | ((n & 0x3333) << 2);
- n = ((n & 0xF0F0) >> 4) | ((n & 0x0F0F) << 4);
- n = ((n & 0xFF00) >> 8) | ((n & 0x00FF) << 8);
- return n;
-}
-
-stbi_inline static int stbi__bit_reverse(int v, int bits)
-{
- STBI_ASSERT(bits <= 16);
- // to bit reverse n bits, reverse 16 and shift
- // e.g. 11 bits, bit reverse and shift away 5
- return stbi__bitreverse16(v) >> (16-bits);
-}
-
-static int stbi__zbuild_huffman(stbi__zhuffman *z, stbi_uc *sizelist, int num)
-{
- int i,k=0;
- int code, next_code[16], sizes[17];
-
- // DEFLATE spec for generating codes
- memset(sizes, 0, sizeof(sizes));
- memset(z->fast, 255, sizeof(z->fast));
- for (i=0; i < num; ++i)
- ++sizes[sizelist[i]];
- sizes[0] = 0;
- for (i=1; i < 16; ++i)
- STBI_ASSERT(sizes[i] <= (1 << i));
- code = 0;
- for (i=1; i < 16; ++i) {
- next_code[i] = code;
- z->firstcode[i] = (stbi__uint16) code;
- z->firstsymbol[i] = (stbi__uint16) k;
- code = (code + sizes[i]);
- if (sizes[i])
- if (code-1 >= (1 << i)) return stbi__err("bad codelengths","Corrupt JPEG");
- z->maxcode[i] = code << (16-i); // preshift for inner loop
- code <<= 1;
- k += sizes[i];
- }
- z->maxcode[16] = 0x10000; // sentinel
- for (i=0; i < num; ++i) {
- int s = sizelist[i];
- if (s) {
- int c = next_code[s] - z->firstcode[s] + z->firstsymbol[s];
- z->size [c] = (stbi_uc ) s;
- z->value[c] = (stbi__uint16) i;
- if (s <= STBI__ZFAST_BITS) {
- int k = stbi__bit_reverse(next_code[s],s);
- while (k < (1 << STBI__ZFAST_BITS)) {
- z->fast[k] = (stbi__uint16) c;
- k += (1 << s);
- }
- }
- ++next_code[s];
- }
- }
- return 1;
-}
-
-// zlib-from-memory implementation for PNG reading
-// because PNG allows splitting the zlib stream arbitrarily,
-// and it's annoying structurally to have PNG call ZLIB call PNG,
-// we require PNG read all the IDATs and combine them into a single
-// memory buffer
-
-typedef struct
-{
- stbi_uc *zbuffer, *zbuffer_end;
- int num_bits;
- stbi__uint32 code_buffer;
-
- char *zout;
- char *zout_start;
- char *zout_end;
- int z_expandable;
-
- stbi__zhuffman z_length, z_distance;
-} stbi__zbuf;
-
-stbi_inline static stbi_uc stbi__zget8(stbi__zbuf *z)
-{
- if (z->zbuffer >= z->zbuffer_end) return 0;
- return *z->zbuffer++;
-}
-
-static void stbi__fill_bits(stbi__zbuf *z)
-{
- do {
- STBI_ASSERT(z->code_buffer < (1U << z->num_bits));
- z->code_buffer |= stbi__zget8(z) << z->num_bits;
- z->num_bits += 8;
- } while (z->num_bits <= 24);
-}
-
-stbi_inline static unsigned int stbi__zreceive(stbi__zbuf *z, int n)
-{
- unsigned int k;
- if (z->num_bits < n) stbi__fill_bits(z);
- k = z->code_buffer & ((1 << n) - 1);
- z->code_buffer >>= n;
- z->num_bits -= n;
- return k;
-}
-
-stbi_inline static int stbi__zhuffman_decode(stbi__zbuf *a, stbi__zhuffman *z)
-{
- int b,s,k;
- if (a->num_bits < 16) stbi__fill_bits(a);
- b = z->fast[a->code_buffer & STBI__ZFAST_MASK];
- if (b < 0xffff) {
- s = z->size[b];
- a->code_buffer >>= s;
- a->num_bits -= s;
- return z->value[b];
- }
-
- // not resolved by fast table, so compute it the slow way
- // use jpeg approach, which requires MSbits at top
- k = stbi__bit_reverse(a->code_buffer, 16);
- for (s=STBI__ZFAST_BITS+1; ; ++s)
- if (k < z->maxcode[s])
- break;
- if (s == 16) return -1; // invalid code!
- // code size is s, so:
- b = (k >> (16-s)) - z->firstcode[s] + z->firstsymbol[s];
- STBI_ASSERT(z->size[b] == s);
- a->code_buffer >>= s;
- a->num_bits -= s;
- return z->value[b];
-}
-
-static int stbi__zexpand(stbi__zbuf *z, int n) // need to make room for n bytes
-{
- char *q;
- int cur, limit;
- if (!z->z_expandable) return stbi__err("output buffer limit","Corrupt PNG");
- cur = (int) (z->zout - z->zout_start);
- limit = (int) (z->zout_end - z->zout_start);
- while (cur + n > limit)
- limit *= 2;
- q = (char *) realloc(z->zout_start, limit);
- if (q == NULL) return stbi__err("outofmem", "Out of memory");
- z->zout_start = q;
- z->zout = q + cur;
- z->zout_end = q + limit;
- return 1;
-}
-
-static int stbi__zlength_base[31] = {
- 3,4,5,6,7,8,9,10,11,13,
- 15,17,19,23,27,31,35,43,51,59,
- 67,83,99,115,131,163,195,227,258,0,0 };
-
-static int stbi__zlength_extra[31]=
-{ 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 };
-
-static int stbi__zdist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,
-257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0};
-
-static int stbi__zdist_extra[32] =
-{ 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
-
-static int stbi__parse_huffman_block(stbi__zbuf *a)
-{
- for(;;) {
- int z = stbi__zhuffman_decode(a, &a->z_length);
- if (z < 256) {
- if (z < 0) return stbi__err("bad huffman code","Corrupt PNG"); // error in huffman codes
- if (a->zout >= a->zout_end) if (!stbi__zexpand(a, 1)) return 0;
- *a->zout++ = (char) z;
- } else {
- stbi_uc *p;
- int len,dist;
- if (z == 256) return 1;
- z -= 257;
- len = stbi__zlength_base[z];
- if (stbi__zlength_extra[z]) len += stbi__zreceive(a, stbi__zlength_extra[z]);
- z = stbi__zhuffman_decode(a, &a->z_distance);
- if (z < 0) return stbi__err("bad huffman code","Corrupt PNG");
- dist = stbi__zdist_base[z];
- if (stbi__zdist_extra[z]) dist += stbi__zreceive(a, stbi__zdist_extra[z]);
- if (a->zout - a->zout_start < dist) return stbi__err("bad dist","Corrupt PNG");
- if (a->zout + len > a->zout_end) if (!stbi__zexpand(a, len)) return 0;
- p = (stbi_uc *) (a->zout - dist);
- while (len--)
- *a->zout++ = *p++;
- }
- }
-}
-
-static int stbi__compute_huffman_codes(stbi__zbuf *a)
-{
- static stbi_uc length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 };
- stbi__zhuffman z_codelength;
- stbi_uc lencodes[286+32+137];//padding for maximum single op
- stbi_uc codelength_sizes[19];
- int i,n;
-
- int hlit = stbi__zreceive(a,5) + 257;
- int hdist = stbi__zreceive(a,5) + 1;
- int hclen = stbi__zreceive(a,4) + 4;
-
- memset(codelength_sizes, 0, sizeof(codelength_sizes));
- for (i=0; i < hclen; ++i) {
- int s = stbi__zreceive(a,3);
- codelength_sizes[length_dezigzag[i]] = (stbi_uc) s;
- }
- if (!stbi__zbuild_huffman(&z_codelength, codelength_sizes, 19)) return 0;
-
- n = 0;
- while (n < hlit + hdist) {
- int c = stbi__zhuffman_decode(a, &z_codelength);
- STBI_ASSERT(c >= 0 && c < 19);
- if (c < 16)
- lencodes[n++] = (stbi_uc) c;
- else if (c == 16) {
- c = stbi__zreceive(a,2)+3;
- memset(lencodes+n, lencodes[n-1], c);
- n += c;
- } else if (c == 17) {
- c = stbi__zreceive(a,3)+3;
- memset(lencodes+n, 0, c);
- n += c;
- } else {
- STBI_ASSERT(c == 18);
- c = stbi__zreceive(a,7)+11;
- memset(lencodes+n, 0, c);
- n += c;
- }
- }
- if (n != hlit+hdist) return stbi__err("bad codelengths","Corrupt PNG");
- if (!stbi__zbuild_huffman(&a->z_length, lencodes, hlit)) return 0;
- if (!stbi__zbuild_huffman(&a->z_distance, lencodes+hlit, hdist)) return 0;
- return 1;
-}
-
-static int stbi__parse_uncomperssed_block(stbi__zbuf *a)
-{
- stbi_uc header[4];
- int len,nlen,k;
- if (a->num_bits & 7)
- stbi__zreceive(a, a->num_bits & 7); // discard
- // drain the bit-packed data into header
- k = 0;
- while (a->num_bits > 0) {
- header[k++] = (stbi_uc) (a->code_buffer & 255); // suppress MSVC run-time check
- a->code_buffer >>= 8;
- a->num_bits -= 8;
- }
- STBI_ASSERT(a->num_bits == 0);
- // now fill header the normal way
- while (k < 4)
- header[k++] = stbi__zget8(a);
- len = header[1] * 256 + header[0];
- nlen = header[3] * 256 + header[2];
- if (nlen != (len ^ 0xffff)) return stbi__err("zlib corrupt","Corrupt PNG");
- if (a->zbuffer + len > a->zbuffer_end) return stbi__err("read past buffer","Corrupt PNG");
- if (a->zout + len > a->zout_end)
- if (!stbi__zexpand(a, len)) return 0;
- memcpy(a->zout, a->zbuffer, len);
- a->zbuffer += len;
- a->zout += len;
- return 1;
-}
-
-static int stbi__parse_zlib_header(stbi__zbuf *a)
-{
- int cmf = stbi__zget8(a);
- int cm = cmf & 15;
- /* int cinfo = cmf >> 4; */
- int flg = stbi__zget8(a);
- if ((cmf*256+flg) % 31 != 0) return stbi__err("bad zlib header","Corrupt PNG"); // zlib spec
- if (flg & 32) return stbi__err("no preset dict","Corrupt PNG"); // preset dictionary not allowed in png
- if (cm != 8) return stbi__err("bad compression","Corrupt PNG"); // DEFLATE required for png
- // window = 1 << (8 + cinfo)... but who cares, we fully buffer output
- return 1;
-}
-
-// @TODO: should statically initialize these for optimal thread safety
-static stbi_uc stbi__zdefault_length[288], stbi__zdefault_distance[32];
-static void stbi__init_zdefaults(void)
-{
- int i; // use <= to match clearly with spec
- for (i=0; i <= 143; ++i) stbi__zdefault_length[i] = 8;
- for ( ; i <= 255; ++i) stbi__zdefault_length[i] = 9;
- for ( ; i <= 279; ++i) stbi__zdefault_length[i] = 7;
- for ( ; i <= 287; ++i) stbi__zdefault_length[i] = 8;
-
- for (i=0; i <= 31; ++i) stbi__zdefault_distance[i] = 5;
-}
-
-static int stbi__parse_zlib(stbi__zbuf *a, int parse_header)
-{
- int final, type;
- if (parse_header)
- if (!stbi__parse_zlib_header(a)) return 0;
- a->num_bits = 0;
- a->code_buffer = 0;
- do {
- final = stbi__zreceive(a,1);
- type = stbi__zreceive(a,2);
- if (type == 0) {
- if (!stbi__parse_uncomperssed_block(a)) return 0;
- } else if (type == 3) {
- return 0;
- } else {
- if (type == 1) {
- // use fixed code lengths
- if (!stbi__zdefault_distance[31]) stbi__init_zdefaults();
- if (!stbi__zbuild_huffman(&a->z_length , stbi__zdefault_length , 288)) return 0;
- if (!stbi__zbuild_huffman(&a->z_distance, stbi__zdefault_distance, 32)) return 0;
- } else {
- if (!stbi__compute_huffman_codes(a)) return 0;
- }
- if (!stbi__parse_huffman_block(a)) return 0;
- }
- } while (!final);
- return 1;
-}
-
-static int stbi__do_zlib(stbi__zbuf *a, char *obuf, int olen, int exp, int parse_header)
-{
- a->zout_start = obuf;
- a->zout = obuf;
- a->zout_end = obuf + olen;
- a->z_expandable = exp;
-
- return stbi__parse_zlib(a, parse_header);
-}
-
-STBIDEF char *stbi_zlib_decode_malloc_guesssize(const char *buffer, int len, int initial_size, int *outlen)
-{
- stbi__zbuf a;
- char *p = (char *) stbi__malloc(initial_size);
- if (p == NULL) return NULL;
- a.zbuffer = (stbi_uc *) buffer;
- a.zbuffer_end = (stbi_uc *) buffer + len;
- if (stbi__do_zlib(&a, p, initial_size, 1, 1)) {
- if (outlen) *outlen = (int) (a.zout - a.zout_start);
- return a.zout_start;
- } else {
- free(a.zout_start);
- return NULL;
- }
-}
-
-STBIDEF char *stbi_zlib_decode_malloc(char const *buffer, int len, int *outlen)
-{
- return stbi_zlib_decode_malloc_guesssize(buffer, len, 16384, outlen);
-}
-
-STBIDEF char *stbi_zlib_decode_malloc_guesssize_headerflag(const char *buffer, int len, int initial_size, int *outlen, int parse_header)
-{
- stbi__zbuf a;
- char *p = (char *) stbi__malloc(initial_size);
- if (p == NULL) return NULL;
- a.zbuffer = (stbi_uc *) buffer;
- a.zbuffer_end = (stbi_uc *) buffer + len;
- if (stbi__do_zlib(&a, p, initial_size, 1, parse_header)) {
- if (outlen) *outlen = (int) (a.zout - a.zout_start);
- return a.zout_start;
- } else {
- free(a.zout_start);
- return NULL;
- }
-}
-
-STBIDEF int stbi_zlib_decode_buffer(char *obuffer, int olen, char const *ibuffer, int ilen)
-{
- stbi__zbuf a;
- a.zbuffer = (stbi_uc *) ibuffer;
- a.zbuffer_end = (stbi_uc *) ibuffer + ilen;
- if (stbi__do_zlib(&a, obuffer, olen, 0, 1))
- return (int) (a.zout - a.zout_start);
- else
- return -1;
-}
-
-STBIDEF char *stbi_zlib_decode_noheader_malloc(char const *buffer, int len, int *outlen)
-{
- stbi__zbuf a;
- char *p = (char *) stbi__malloc(16384);
- if (p == NULL) return NULL;
- a.zbuffer = (stbi_uc *) buffer;
- a.zbuffer_end = (stbi_uc *) buffer+len;
- if (stbi__do_zlib(&a, p, 16384, 1, 0)) {
- if (outlen) *outlen = (int) (a.zout - a.zout_start);
- return a.zout_start;
- } else {
- free(a.zout_start);
- return NULL;
- }
-}
-
-STBIDEF int stbi_zlib_decode_noheader_buffer(char *obuffer, int olen, const char *ibuffer, int ilen)
-{
- stbi__zbuf a;
- a.zbuffer = (stbi_uc *) ibuffer;
- a.zbuffer_end = (stbi_uc *) ibuffer + ilen;
- if (stbi__do_zlib(&a, obuffer, olen, 0, 0))
- return (int) (a.zout - a.zout_start);
- else
- return -1;
-}
-
-// public domain "baseline" PNG decoder v0.10 Sean Barrett 2006-11-18
-// simple implementation
-// - only 8-bit samples
-// - no CRC checking
-// - allocates lots of intermediate memory
-// - avoids problem of streaming data between subsystems
-// - avoids explicit window management
-// performance
-// - uses stb_zlib, a PD zlib implementation with fast huffman decoding
-
-
-typedef struct
-{
- stbi__uint32 length;
- stbi__uint32 type;
-} stbi__pngchunk;
-
-#define PNG_TYPE(a,b,c,d) (((a) << 24) + ((b) << 16) + ((c) << 8) + (d))
-
-static stbi__pngchunk stbi__get_chunk_header(stbi__context *s)
-{
- stbi__pngchunk c;
- c.length = stbi__get32be(s);
- c.type = stbi__get32be(s);
- return c;
-}
-
-static int stbi__check_png_header(stbi__context *s)
-{
- static stbi_uc png_sig[8] = { 137,80,78,71,13,10,26,10 };
- int i;
- for (i=0; i < 8; ++i)
- if (stbi__get8(s) != png_sig[i]) return stbi__err("bad png sig","Not a PNG");
- return 1;
-}
-
-typedef struct
-{
- stbi__context *s;
- stbi_uc *idata, *expanded, *out;
-} stbi__png;
-
-
-enum {
- STBI__F_none=0, STBI__F_sub=1, STBI__F_up=2, STBI__F_avg=3, STBI__F_paeth=4,
- STBI__F_avg_first, STBI__F_paeth_first
-};
-
-static stbi_uc first_row_filter[5] =
-{
- STBI__F_none, STBI__F_sub, STBI__F_none, STBI__F_avg_first, STBI__F_paeth_first
-};
-
-static int stbi__paeth(int a, int b, int c)
-{
- int p = a + b - c;
- int pa = abs(p-a);
- int pb = abs(p-b);
- int pc = abs(p-c);
- if (pa <= pb && pa <= pc) return a;
- if (pb <= pc) return b;
- return c;
-}
-
-#define STBI__BYTECAST(x) ((stbi_uc) ((x) & 255)) // truncate int to byte without warnings
-
-// create the png data from post-deflated data
-static int stbi__create_png_image_raw(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, stbi__uint32 x, stbi__uint32 y, int depth, int color)
-{
- stbi__context *s = a->s;
- stbi__uint32 i,j,stride = x*out_n;
- stbi__uint32 img_len;
- int k;
- int img_n = s->img_n; // copy it into a local for later
- stbi_uc* line8 = NULL; // point into raw when depth==8 else temporary local buffer
-
- STBI_ASSERT(out_n == s->img_n || out_n == s->img_n+1);
- a->out = (stbi_uc *) stbi__malloc(x * y * out_n);
- if (!a->out) return stbi__err("outofmem", "Out of memory");
-
- img_len = ((((img_n * x * depth) + 7) >> 3) + 1) * y;
- if (s->img_x == x && s->img_y == y) {
- if (raw_len != img_len) return stbi__err("not enough pixels","Corrupt PNG");
- } else { // interlaced:
- if (raw_len < img_len) return stbi__err("not enough pixels","Corrupt PNG");
- }
-
- if (depth != 8) {
- line8 = (stbi_uc *) stbi__malloc((x+7) * out_n); // allocate buffer for one scanline
- if (!line8) return stbi__err("outofmem", "Out of memory");
- }
-
- for (j=0; j < y; ++j) {
- stbi_uc *in;
- stbi_uc *cur = a->out + stride*j;
- stbi_uc *prior = cur - stride;
- int filter = *raw++;
- if (filter > 4) {
- if (depth != 8) free(line8);
- return stbi__err("invalid filter","Corrupt PNG");
- }
-
- if (depth == 8) {
- in = raw;
- raw += x*img_n;
- }
- else {
- // unpack 1/2/4-bit into a 8-bit buffer. allows us to keep the common 8-bit path optimal at minimal cost for 1/2/4-bit
- // png guarante byte alignment, if width is not multiple of 8/4/2 we'll decode dummy trailing data that will be skipped in the later loop
- in = line8;
- stbi_uc* decode_out = line8;
- stbi_uc scale = (color == 0) ? 0xFF/((1<= 1; k-=2, raw++) {
- *decode_out++ = scale * ((*raw >> 4) );
- *decode_out++ = scale * ((*raw ) & 0x0f);
- }
- } else if (depth == 2) {
- for (k=x*img_n; k >= 1; k-=4, raw++) {
- *decode_out++ = scale * ((*raw >> 6) );
- *decode_out++ = scale * ((*raw >> 4) & 0x03);
- *decode_out++ = scale * ((*raw >> 2) & 0x03);
- *decode_out++ = scale * ((*raw ) & 0x03);
- }
- } else if (depth == 1) {
- for (k=x*img_n; k >= 1; k-=8, raw++) {
- *decode_out++ = scale * ((*raw >> 7) );
- *decode_out++ = scale * ((*raw >> 6) & 0x01);
- *decode_out++ = scale * ((*raw >> 5) & 0x01);
- *decode_out++ = scale * ((*raw >> 4) & 0x01);
- *decode_out++ = scale * ((*raw >> 3) & 0x01);
- *decode_out++ = scale * ((*raw >> 2) & 0x01);
- *decode_out++ = scale * ((*raw >> 1) & 0x01);
- *decode_out++ = scale * ((*raw ) & 0x01);
- }
- }
- }
-
- // if first row, use special filter that doesn't sample previous row
- if (j == 0) filter = first_row_filter[filter];
-
- // handle first pixel explicitly
- for (k=0; k < img_n; ++k) {
- switch (filter) {
- case STBI__F_none : cur[k] = in[k]; break;
- case STBI__F_sub : cur[k] = in[k]; break;
- case STBI__F_up : cur[k] = STBI__BYTECAST(in[k] + prior[k]); break;
- case STBI__F_avg : cur[k] = STBI__BYTECAST(in[k] + (prior[k]>>1)); break;
- case STBI__F_paeth : cur[k] = STBI__BYTECAST(in[k] + stbi__paeth(0,prior[k],0)); break;
- case STBI__F_avg_first : cur[k] = in[k]; break;
- case STBI__F_paeth_first: cur[k] = in[k]; break;
- }
- }
- if (img_n != out_n) cur[img_n] = 255;
- in += img_n;
- cur += out_n;
- prior += out_n;
- // this is a little gross, so that we don't switch per-pixel or per-component
- if (img_n == out_n) {
- #define CASE(f) \
- case f: \
- for (i=x-1; i >= 1; --i, in+=img_n,cur+=img_n,prior+=img_n) \
- for (k=0; k < img_n; ++k)
- switch (filter) {
- CASE(STBI__F_none) cur[k] = in[k]; break;
- CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(in[k] + cur[k-img_n]); break;
- CASE(STBI__F_up) cur[k] = STBI__BYTECAST(in[k] + prior[k]); break;
- CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(in[k] + ((prior[k] + cur[k-img_n])>>1)); break;
- CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(in[k] + stbi__paeth(cur[k-img_n],prior[k],prior[k-img_n])); break;
- CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(in[k] + (cur[k-img_n] >> 1)); break;
- CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(in[k] + stbi__paeth(cur[k-img_n],0,0)); break;
- }
- #undef CASE
- } else {
- STBI_ASSERT(img_n+1 == out_n);
- #define CASE(f) \
- case f: \
- for (i=x-1; i >= 1; --i, cur[img_n]=255,in+=img_n,cur+=out_n,prior+=out_n) \
- for (k=0; k < img_n; ++k)
- switch (filter) {
- CASE(STBI__F_none) cur[k] = in[k]; break;
- CASE(STBI__F_sub) cur[k] = STBI__BYTECAST(in[k] + cur[k-out_n]); break;
- CASE(STBI__F_up) cur[k] = STBI__BYTECAST(in[k] + prior[k]); break;
- CASE(STBI__F_avg) cur[k] = STBI__BYTECAST(in[k] + ((prior[k] + cur[k-out_n])>>1)); break;
- CASE(STBI__F_paeth) cur[k] = STBI__BYTECAST(in[k] + stbi__paeth(cur[k-out_n],prior[k],prior[k-out_n])); break;
- CASE(STBI__F_avg_first) cur[k] = STBI__BYTECAST(in[k] + (cur[k-out_n] >> 1)); break;
- CASE(STBI__F_paeth_first) cur[k] = STBI__BYTECAST(in[k] + stbi__paeth(cur[k-out_n],0,0)); break;
- }
- #undef CASE
- }
- }
-
- if (depth != 8) free(line8);
- return 1;
-}
-
-static int stbi__create_png_image(stbi__png *a, stbi_uc *raw, stbi__uint32 raw_len, int out_n, int depth, int color, int interlaced)
-{
- stbi_uc *final;
- int p;
- if (!interlaced)
- return stbi__create_png_image_raw(a, raw, raw_len, out_n, a->s->img_x, a->s->img_y, depth, color);
-
- // de-interlacing
- final = (stbi_uc *) stbi__malloc(a->s->img_x * a->s->img_y * out_n);
- for (p=0; p < 7; ++p) {
- int xorig[] = { 0,4,0,2,0,1,0 };
- int yorig[] = { 0,0,4,0,2,0,1 };
- int xspc[] = { 8,8,4,4,2,2,1 };
- int yspc[] = { 8,8,8,4,4,2,2 };
- int i,j,x,y;
- // pass1_x[4] = 0, pass1_x[5] = 1, pass1_x[12] = 1
- x = (a->s->img_x - xorig[p] + xspc[p]-1) / xspc[p];
- y = (a->s->img_y - yorig[p] + yspc[p]-1) / yspc[p];
- if (x && y) {
- stbi__uint32 img_len = ((((out_n * x * depth) + 7) >> 3) + 1) * y;
- if (!stbi__create_png_image_raw(a, raw, raw_len, out_n, x, y, depth, color)) {
- free(final);
- return 0;
- }
- for (j=0; j < y; ++j)
- for (i=0; i < x; ++i)
- memcpy(final + (j*yspc[p]+yorig[p])*a->s->img_x*out_n + (i*xspc[p]+xorig[p])*out_n,
- a->out + (j*x+i)*out_n, out_n);
- free(a->out);
- raw += img_len;
- raw_len -= img_len;
- }
- }
- a->out = final;
-
- return 1;
-}
-
-static int stbi__compute_transparency(stbi__png *z, stbi_uc tc[3], int out_n)
-{
- stbi__context *s = z->s;
- stbi__uint32 i, pixel_count = s->img_x * s->img_y;
- stbi_uc *p = z->out;
-
- // compute color-based transparency, assuming we've
- // already got 255 as the alpha value in the output
- STBI_ASSERT(out_n == 2 || out_n == 4);
-
- if (out_n == 2) {
- for (i=0; i < pixel_count; ++i) {
- p[1] = (p[0] == tc[0] ? 0 : 255);
- p += 2;
- }
- } else {
- for (i=0; i < pixel_count; ++i) {
- if (p[0] == tc[0] && p[1] == tc[1] && p[2] == tc[2])
- p[3] = 0;
- p += 4;
- }
- }
- return 1;
-}
-
-static int stbi__expand_png_palette(stbi__png *a, stbi_uc *palette, int len, int pal_img_n)
-{
- stbi__uint32 i, pixel_count = a->s->img_x * a->s->img_y;
- stbi_uc *p, *temp_out, *orig = a->out;
-
- p = (stbi_uc *) stbi__malloc(pixel_count * pal_img_n);
- if (p == NULL) return stbi__err("outofmem", "Out of memory");
-
- // between here and free(out) below, exitting would leak
- temp_out = p;
-
- if (pal_img_n == 3) {
- for (i=0; i < pixel_count; ++i) {
- int n = orig[i]*4;
- p[0] = palette[n ];
- p[1] = palette[n+1];
- p[2] = palette[n+2];
- p += 3;
- }
- } else {
- for (i=0; i < pixel_count; ++i) {
- int n = orig[i]*4;
- p[0] = palette[n ];
- p[1] = palette[n+1];
- p[2] = palette[n+2];
- p[3] = palette[n+3];
- p += 4;
- }
- }
- free(a->out);
- a->out = temp_out;
-
- STBI_NOTUSED(len);
-
- return 1;
-}
-
-static int stbi__unpremultiply_on_load = 0;
-static int stbi__de_iphone_flag = 0;
-
-STBIDEF void stbi_set_unpremultiply_on_load(int flag_true_if_should_unpremultiply)
-{
- stbi__unpremultiply_on_load = flag_true_if_should_unpremultiply;
-}
-
-STBIDEF void stbi_convert_iphone_png_to_rgb(int flag_true_if_should_convert)
-{
- stbi__de_iphone_flag = flag_true_if_should_convert;
-}
-
-static void stbi__de_iphone(stbi__png *z)
-{
- stbi__context *s = z->s;
- stbi__uint32 i, pixel_count = s->img_x * s->img_y;
- stbi_uc *p = z->out;
-
- if (s->img_out_n == 3) { // convert bgr to rgb
- for (i=0; i < pixel_count; ++i) {
- stbi_uc t = p[0];
- p[0] = p[2];
- p[2] = t;
- p += 3;
- }
- } else {
- STBI_ASSERT(s->img_out_n == 4);
- if (stbi__unpremultiply_on_load) {
- // convert bgr to rgb and unpremultiply
- for (i=0; i < pixel_count; ++i) {
- stbi_uc a = p[3];
- stbi_uc t = p[0];
- if (a) {
- p[0] = p[2] * 255 / a;
- p[1] = p[1] * 255 / a;
- p[2] = t * 255 / a;
- } else {
- p[0] = p[2];
- p[2] = t;
- }
- p += 4;
- }
- } else {
- // convert bgr to rgb
- for (i=0; i < pixel_count; ++i) {
- stbi_uc t = p[0];
- p[0] = p[2];
- p[2] = t;
- p += 4;
- }
- }
- }
-}
-
-static int stbi__parse_png_file(stbi__png *z, int scan, int req_comp)
-{
- stbi_uc palette[1024], pal_img_n=0;
- stbi_uc has_trans=0, tc[3];
- stbi__uint32 ioff=0, idata_limit=0, i, pal_len=0;
- int first=1,k,interlace=0, color=0, depth=0, is_iphone=0;
- stbi__context *s = z->s;
-
- z->expanded = NULL;
- z->idata = NULL;
- z->out = NULL;
-
- if (!stbi__check_png_header(s)) return 0;
-
- if (scan == SCAN_type) return 1;
-
- for (;;) {
- stbi__pngchunk c = stbi__get_chunk_header(s);
- switch (c.type) {
- case PNG_TYPE('C','g','B','I'):
- is_iphone = 1;
- stbi__skip(s, c.length);
- break;
- case PNG_TYPE('I','H','D','R'): {
- int comp,filter;
- if (!first) return stbi__err("multiple IHDR","Corrupt PNG");
- first = 0;
- if (c.length != 13) return stbi__err("bad IHDR len","Corrupt PNG");
- s->img_x = stbi__get32be(s); if (s->img_x > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)");
- s->img_y = stbi__get32be(s); if (s->img_y > (1 << 24)) return stbi__err("too large","Very large image (corrupt?)");
- depth = stbi__get8(s); if (depth != 1 && depth != 2 && depth != 4 && depth != 8) return stbi__err("1/2/4/8-bit only","PNG not supported: 1/2/4/8-bit only");
- color = stbi__get8(s); if (color > 6) return stbi__err("bad ctype","Corrupt PNG");
- if (color == 3) pal_img_n = 3; else if (color & 1) return stbi__err("bad ctype","Corrupt PNG");
- comp = stbi__get8(s); if (comp) return stbi__err("bad comp method","Corrupt PNG");
- filter= stbi__get8(s); if (filter) return stbi__err("bad filter method","Corrupt PNG");
- interlace = stbi__get8(s); if (interlace>1) return stbi__err("bad interlace method","Corrupt PNG");
- if (!s->img_x || !s->img_y) return stbi__err("0-pixel image","Corrupt PNG");
- if (!pal_img_n) {
- s->img_n = (color & 2 ? 3 : 1) + (color & 4 ? 1 : 0);
- if ((1 << 30) / s->img_x / s->img_n < s->img_y) return stbi__err("too large", "Image too large to decode");
- if (scan == SCAN_header) return 1;
- } else {
- // if paletted, then pal_n is our final components, and
- // img_n is # components to decompress/filter.
- s->img_n = 1;
- if ((1 << 30) / s->img_x / 4 < s->img_y) return stbi__err("too large","Corrupt PNG");
- // if SCAN_header, have to scan to see if we have a tRNS
- }
- break;
- }
-
- case PNG_TYPE('P','L','T','E'): {
- if (first) return stbi__err("first not IHDR", "Corrupt PNG");
- if (c.length > 256*3) return stbi__err("invalid PLTE","Corrupt PNG");
- pal_len = c.length / 3;
- if (pal_len * 3 != c.length) return stbi__err("invalid PLTE","Corrupt PNG");
- for (i=0; i < pal_len; ++i) {
- palette[i*4+0] = stbi__get8(s);
- palette[i*4+1] = stbi__get8(s);
- palette[i*4+2] = stbi__get8(s);
- palette[i*4+3] = 255;
- }
- break;
- }
-
- case PNG_TYPE('t','R','N','S'): {
- if (first) return stbi__err("first not IHDR", "Corrupt PNG");
- if (z->idata) return stbi__err("tRNS after IDAT","Corrupt PNG");
- if (pal_img_n) {
- if (scan == SCAN_header) { s->img_n = 4; return 1; }
- if (pal_len == 0) return stbi__err("tRNS before PLTE","Corrupt PNG");
- if (c.length > pal_len) return stbi__err("bad tRNS len","Corrupt PNG");
- pal_img_n = 4;
- for (i=0; i < c.length; ++i)
- palette[i*4+3] = stbi__get8(s);
- } else {
- if (!(s->img_n & 1)) return stbi__err("tRNS with alpha","Corrupt PNG");
- if (c.length != (stbi__uint32) s->img_n*2) return stbi__err("bad tRNS len","Corrupt PNG");
- has_trans = 1;
- for (k=0; k < s->img_n; ++k)
- tc[k] = (stbi_uc) (stbi__get16be(s) & 255); // non 8-bit images will be larger
- }
- break;
- }
-
- case PNG_TYPE('I','D','A','T'): {
- if (first) return stbi__err("first not IHDR", "Corrupt PNG");
- if (pal_img_n && !pal_len) return stbi__err("no PLTE","Corrupt PNG");
- if (scan == SCAN_header) { s->img_n = pal_img_n; return 1; }
- if (ioff + c.length > idata_limit) {
- stbi_uc *p;
- if (idata_limit == 0) idata_limit = c.length > 4096 ? c.length : 4096;
- while (ioff + c.length > idata_limit)
- idata_limit *= 2;
- p = (stbi_uc *) realloc(z->idata, idata_limit); if (p == NULL) return stbi__err("outofmem", "Out of memory");
- z->idata = p;
- }
- if (!stbi__getn(s, z->idata+ioff,c.length)) return stbi__err("outofdata","Corrupt PNG");
- ioff += c.length;
- break;
- }
-
- case PNG_TYPE('I','E','N','D'): {
- stbi__uint32 raw_len;
- if (first) return stbi__err("first not IHDR", "Corrupt PNG");
- if (scan != SCAN_load) return 1;
- if (z->idata == NULL) return stbi__err("no IDAT","Corrupt PNG");
- z->expanded = (stbi_uc *) stbi_zlib_decode_malloc_guesssize_headerflag((char *) z->idata, ioff, 16384, (int *) &raw_len, !is_iphone);
- if (z->expanded == NULL) return 0; // zlib should set error
- free(z->idata); z->idata = NULL;
- if ((req_comp == s->img_n+1 && req_comp != 3 && !pal_img_n) || has_trans)
- s->img_out_n = s->img_n+1;
- else
- s->img_out_n = s->img_n;
- if (!stbi__create_png_image(z, z->expanded, raw_len, s->img_out_n, depth, color, interlace)) return 0;
- if (has_trans)
- if (!stbi__compute_transparency(z, tc, s->img_out_n)) return 0;
- if (is_iphone && stbi__de_iphone_flag && s->img_out_n > 2)
- stbi__de_iphone(z);
- if (pal_img_n) {
- // pal_img_n == 3 or 4
- s->img_n = pal_img_n; // record the actual colors we had
- s->img_out_n = pal_img_n;
- if (req_comp >= 3) s->img_out_n = req_comp;
- if (!stbi__expand_png_palette(z, palette, pal_len, s->img_out_n))
- return 0;
- }
- free(z->expanded); z->expanded = NULL;
- return 1;
- }
-
- default:
- // if critical, fail
- if (first) return stbi__err("first not IHDR", "Corrupt PNG");
- if ((c.type & (1 << 29)) == 0) {
- #ifndef STBI_NO_FAILURE_STRINGS
- // not threadsafe
- static char invalid_chunk[] = "XXXX PNG chunk not known";
- invalid_chunk[0] = STBI__BYTECAST(c.type >> 24);
- invalid_chunk[1] = STBI__BYTECAST(c.type >> 16);
- invalid_chunk[2] = STBI__BYTECAST(c.type >> 8);
- invalid_chunk[3] = STBI__BYTECAST(c.type >> 0);
- #endif
- return stbi__err(invalid_chunk, "PNG not supported: unknown PNG chunk type");
- }
- stbi__skip(s, c.length);
- break;
- }
- // end of PNG chunk, read and skip CRC
- stbi__get32be(s);
- }
-}
-
-static unsigned char *stbi__do_png(stbi__png *p, int *x, int *y, int *n, int req_comp)
-{
- unsigned char *result=NULL;
- if (req_comp < 0 || req_comp > 4) return stbi__errpuc("bad req_comp", "Internal error");
- if (stbi__parse_png_file(p, SCAN_load, req_comp)) {
- result = p->out;
- p->out = NULL;
- if (req_comp && req_comp != p->s->img_out_n) {
- result = stbi__convert_format(result, p->s->img_out_n, req_comp, p->s->img_x, p->s->img_y);
- p->s->img_out_n = req_comp;
- if (result == NULL) return result;
- }
- *x = p->s->img_x;
- *y = p->s->img_y;
- if (n) *n = p->s->img_out_n;
- }
- free(p->out); p->out = NULL;
- free(p->expanded); p->expanded = NULL;
- free(p->idata); p->idata = NULL;
-
- return result;
-}
-
-static unsigned char *stbi__png_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- stbi__png p;
- p.s = s;
- return stbi__do_png(&p, x,y,comp,req_comp);
-}
-
-static int stbi__png_test(stbi__context *s)
-{
- int r;
- r = stbi__check_png_header(s);
- stbi__rewind(s);
- return r;
-}
-
-static int stbi__png_info_raw(stbi__png *p, int *x, int *y, int *comp)
-{
- if (!stbi__parse_png_file(p, SCAN_header, 0)) {
- stbi__rewind( p->s );
- return 0;
- }
- if (x) *x = p->s->img_x;
- if (y) *y = p->s->img_y;
- if (comp) *comp = p->s->img_n;
- return 1;
-}
-
-static int stbi__png_info(stbi__context *s, int *x, int *y, int *comp)
-{
- stbi__png p;
- p.s = s;
- return stbi__png_info_raw(&p, x, y, comp);
-}
-
-// Microsoft/Windows BMP image
-static int stbi__bmp_test_raw(stbi__context *s)
-{
- int r;
- int sz;
- if (stbi__get8(s) != 'B') return 0;
- if (stbi__get8(s) != 'M') return 0;
- stbi__get32le(s); // discard filesize
- stbi__get16le(s); // discard reserved
- stbi__get16le(s); // discard reserved
- stbi__get32le(s); // discard data offset
- sz = stbi__get32le(s);
- r = (sz == 12 || sz == 40 || sz == 56 || sz == 108 || sz == 124);
- return r;
-}
-
-static int stbi__bmp_test(stbi__context *s)
-{
- int r = stbi__bmp_test_raw(s);
- stbi__rewind(s);
- return r;
-}
-
-
-// returns 0..31 for the highest set bit
-static int stbi__high_bit(unsigned int z)
-{
- int n=0;
- if (z == 0) return -1;
- if (z >= 0x10000) n += 16, z >>= 16;
- if (z >= 0x00100) n += 8, z >>= 8;
- if (z >= 0x00010) n += 4, z >>= 4;
- if (z >= 0x00004) n += 2, z >>= 2;
- if (z >= 0x00002) n += 1, z >>= 1;
- return n;
-}
-
-static int stbi__bitcount(unsigned int a)
-{
- a = (a & 0x55555555) + ((a >> 1) & 0x55555555); // max 2
- a = (a & 0x33333333) + ((a >> 2) & 0x33333333); // max 4
- a = (a + (a >> 4)) & 0x0f0f0f0f; // max 8 per 4, now 8 bits
- a = (a + (a >> 8)); // max 16 per 8 bits
- a = (a + (a >> 16)); // max 32 per 8 bits
- return a & 0xff;
-}
-
-static int stbi__shiftsigned(int v, int shift, int bits)
-{
- int result;
- int z=0;
-
- if (shift < 0) v <<= -shift;
- else v >>= shift;
- result = v;
-
- z = bits;
- while (z < 8) {
- result += v >> z;
- z += bits;
- }
- return result;
-}
-
-static stbi_uc *stbi__bmp_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- stbi_uc *out;
- unsigned int mr=0,mg=0,mb=0,ma=0, fake_a=0;
- stbi_uc pal[256][4];
- int psize=0,i,j,compress=0,width;
- int bpp, flip_vertically, pad, target, offset, hsz;
- if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') return stbi__errpuc("not BMP", "Corrupt BMP");
- stbi__get32le(s); // discard filesize
- stbi__get16le(s); // discard reserved
- stbi__get16le(s); // discard reserved
- offset = stbi__get32le(s);
- hsz = stbi__get32le(s);
- if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) return stbi__errpuc("unknown BMP", "BMP type not supported: unknown");
- if (hsz == 12) {
- s->img_x = stbi__get16le(s);
- s->img_y = stbi__get16le(s);
- } else {
- s->img_x = stbi__get32le(s);
- s->img_y = stbi__get32le(s);
- }
- if (stbi__get16le(s) != 1) return stbi__errpuc("bad BMP", "bad BMP");
- bpp = stbi__get16le(s);
- if (bpp == 1) return stbi__errpuc("monochrome", "BMP type not supported: 1-bit");
- flip_vertically = ((int) s->img_y) > 0;
- s->img_y = abs((int) s->img_y);
- if (hsz == 12) {
- if (bpp < 24)
- psize = (offset - 14 - 24) / 3;
- } else {
- compress = stbi__get32le(s);
- if (compress == 1 || compress == 2) return stbi__errpuc("BMP RLE", "BMP type not supported: RLE");
- stbi__get32le(s); // discard sizeof
- stbi__get32le(s); // discard hres
- stbi__get32le(s); // discard vres
- stbi__get32le(s); // discard colorsused
- stbi__get32le(s); // discard max important
- if (hsz == 40 || hsz == 56) {
- if (hsz == 56) {
- stbi__get32le(s);
- stbi__get32le(s);
- stbi__get32le(s);
- stbi__get32le(s);
- }
- if (bpp == 16 || bpp == 32) {
- mr = mg = mb = 0;
- if (compress == 0) {
- if (bpp == 32) {
- mr = 0xffu << 16;
- mg = 0xffu << 8;
- mb = 0xffu << 0;
- ma = 0xffu << 24;
- fake_a = 1; // @TODO: check for cases like alpha value is all 0 and switch it to 255
- STBI_NOTUSED(fake_a);
- } else {
- mr = 31u << 10;
- mg = 31u << 5;
- mb = 31u << 0;
- }
- } else if (compress == 3) {
- mr = stbi__get32le(s);
- mg = stbi__get32le(s);
- mb = stbi__get32le(s);
- // not documented, but generated by photoshop and handled by mspaint
- if (mr == mg && mg == mb) {
- // ?!?!?
- return stbi__errpuc("bad BMP", "bad BMP");
- }
- } else
- return stbi__errpuc("bad BMP", "bad BMP");
- }
- } else {
- STBI_ASSERT(hsz == 108 || hsz == 124);
- mr = stbi__get32le(s);
- mg = stbi__get32le(s);
- mb = stbi__get32le(s);
- ma = stbi__get32le(s);
- stbi__get32le(s); // discard color space
- for (i=0; i < 12; ++i)
- stbi__get32le(s); // discard color space parameters
- if (hsz == 124) {
- stbi__get32le(s); // discard rendering intent
- stbi__get32le(s); // discard offset of profile data
- stbi__get32le(s); // discard size of profile data
- stbi__get32le(s); // discard reserved
- }
- }
- if (bpp < 16)
- psize = (offset - 14 - hsz) >> 2;
- }
- s->img_n = ma ? 4 : 3;
- if (req_comp && req_comp >= 3) // we can directly decode 3 or 4
- target = req_comp;
- else
- target = s->img_n; // if they want monochrome, we'll post-convert
- out = (stbi_uc *) stbi__malloc(target * s->img_x * s->img_y);
- if (!out) return stbi__errpuc("outofmem", "Out of memory");
- if (bpp < 16) {
- int z=0;
- if (psize == 0 || psize > 256) { free(out); return stbi__errpuc("invalid", "Corrupt BMP"); }
- for (i=0; i < psize; ++i) {
- pal[i][2] = stbi__get8(s);
- pal[i][1] = stbi__get8(s);
- pal[i][0] = stbi__get8(s);
- if (hsz != 12) stbi__get8(s);
- pal[i][3] = 255;
- }
- stbi__skip(s, offset - 14 - hsz - psize * (hsz == 12 ? 3 : 4));
- if (bpp == 4) width = (s->img_x + 1) >> 1;
- else if (bpp == 8) width = s->img_x;
- else { free(out); return stbi__errpuc("bad bpp", "Corrupt BMP"); }
- pad = (-width)&3;
- for (j=0; j < (int) s->img_y; ++j) {
- for (i=0; i < (int) s->img_x; i += 2) {
- int v=stbi__get8(s),v2=0;
- if (bpp == 4) {
- v2 = v & 15;
- v >>= 4;
- }
- out[z++] = pal[v][0];
- out[z++] = pal[v][1];
- out[z++] = pal[v][2];
- if (target == 4) out[z++] = 255;
- if (i+1 == (int) s->img_x) break;
- v = (bpp == 8) ? stbi__get8(s) : v2;
- out[z++] = pal[v][0];
- out[z++] = pal[v][1];
- out[z++] = pal[v][2];
- if (target == 4) out[z++] = 255;
- }
- stbi__skip(s, pad);
- }
- } else {
- int rshift=0,gshift=0,bshift=0,ashift=0,rcount=0,gcount=0,bcount=0,acount=0;
- int z = 0;
- int easy=0;
- stbi__skip(s, offset - 14 - hsz);
- if (bpp == 24) width = 3 * s->img_x;
- else if (bpp == 16) width = 2*s->img_x;
- else /* bpp = 32 and pad = 0 */ width=0;
- pad = (-width) & 3;
- if (bpp == 24) {
- easy = 1;
- } else if (bpp == 32) {
- if (mb == 0xff && mg == 0xff00 && mr == 0x00ff0000 && ma == 0xff000000)
- easy = 2;
- }
- if (!easy) {
- if (!mr || !mg || !mb) { free(out); return stbi__errpuc("bad masks", "Corrupt BMP"); }
- // right shift amt to put high bit in position #7
- rshift = stbi__high_bit(mr)-7; rcount = stbi__bitcount(mr);
- gshift = stbi__high_bit(mg)-7; gcount = stbi__bitcount(mg);
- bshift = stbi__high_bit(mb)-7; bcount = stbi__bitcount(mb);
- ashift = stbi__high_bit(ma)-7; acount = stbi__bitcount(ma);
- }
- for (j=0; j < (int) s->img_y; ++j) {
- if (easy) {
- for (i=0; i < (int) s->img_x; ++i) {
- unsigned char a;
- out[z+2] = stbi__get8(s);
- out[z+1] = stbi__get8(s);
- out[z+0] = stbi__get8(s);
- z += 3;
- a = (easy == 2 ? stbi__get8(s) : 255);
- if (target == 4) out[z++] = a;
- }
- } else {
- for (i=0; i < (int) s->img_x; ++i) {
- stbi__uint32 v = (stbi__uint32) (bpp == 16 ? stbi__get16le(s) : stbi__get32le(s));
- int a;
- out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mr, rshift, rcount));
- out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mg, gshift, gcount));
- out[z++] = STBI__BYTECAST(stbi__shiftsigned(v & mb, bshift, bcount));
- a = (ma ? stbi__shiftsigned(v & ma, ashift, acount) : 255);
- if (target == 4) out[z++] = STBI__BYTECAST(a);
- }
- }
- stbi__skip(s, pad);
- }
- }
- if (flip_vertically) {
- stbi_uc t;
- for (j=0; j < (int) s->img_y>>1; ++j) {
- stbi_uc *p1 = out + j *s->img_x*target;
- stbi_uc *p2 = out + (s->img_y-1-j)*s->img_x*target;
- for (i=0; i < (int) s->img_x*target; ++i) {
- t = p1[i], p1[i] = p2[i], p2[i] = t;
- }
- }
- }
-
- if (req_comp && req_comp != target) {
- out = stbi__convert_format(out, target, req_comp, s->img_x, s->img_y);
- if (out == NULL) return out; // stbi__convert_format frees input on failure
- }
-
- *x = s->img_x;
- *y = s->img_y;
- if (comp) *comp = s->img_n;
- return out;
-}
-
-// Targa Truevision - TGA
-// by Jonathan Dummer
-
-static int stbi__tga_info(stbi__context *s, int *x, int *y, int *comp)
-{
- int tga_w, tga_h, tga_comp;
- int sz;
- stbi__get8(s); // discard Offset
- sz = stbi__get8(s); // color type
- if( sz > 1 ) {
- stbi__rewind(s);
- return 0; // only RGB or indexed allowed
- }
- sz = stbi__get8(s); // image type
- // only RGB or grey allowed, +/- RLE
- if ((sz != 1) && (sz != 2) && (sz != 3) && (sz != 9) && (sz != 10) && (sz != 11)) return 0;
- stbi__skip(s,9);
- tga_w = stbi__get16le(s);
- if( tga_w < 1 ) {
- stbi__rewind(s);
- return 0; // test width
- }
- tga_h = stbi__get16le(s);
- if( tga_h < 1 ) {
- stbi__rewind(s);
- return 0; // test height
- }
- sz = stbi__get8(s); // bits per pixel
- // only RGB or RGBA or grey allowed
- if ((sz != 8) && (sz != 16) && (sz != 24) && (sz != 32)) {
- stbi__rewind(s);
- return 0;
- }
- tga_comp = sz;
- if (x) *x = tga_w;
- if (y) *y = tga_h;
- if (comp) *comp = tga_comp / 8;
- return 1; // seems to have passed everything
-}
-
-static int stbi__tga_test(stbi__context *s)
-{
- int res;
- int sz;
- stbi__get8(s); // discard Offset
- sz = stbi__get8(s); // color type
- if ( sz > 1 ) return 0; // only RGB or indexed allowed
- sz = stbi__get8(s); // image type
- if ( (sz != 1) && (sz != 2) && (sz != 3) && (sz != 9) && (sz != 10) && (sz != 11) ) return 0; // only RGB or grey allowed, +/- RLE
- stbi__get16be(s); // discard palette start
- stbi__get16be(s); // discard palette length
- stbi__get8(s); // discard bits per palette color entry
- stbi__get16be(s); // discard x origin
- stbi__get16be(s); // discard y origin
- if ( stbi__get16be(s) < 1 ) return 0; // test width
- if ( stbi__get16be(s) < 1 ) return 0; // test height
- sz = stbi__get8(s); // bits per pixel
- if ( (sz != 8) && (sz != 16) && (sz != 24) && (sz != 32) )
- res = 0;
- else
- res = 1;
- stbi__rewind(s);
- return res;
-}
-
-static stbi_uc *stbi__tga_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- // read in the TGA header stuff
- int tga_offset = stbi__get8(s);
- int tga_indexed = stbi__get8(s);
- int tga_image_type = stbi__get8(s);
- int tga_is_RLE = 0;
- int tga_palette_start = stbi__get16le(s);
- int tga_palette_len = stbi__get16le(s);
- int tga_palette_bits = stbi__get8(s);
- int tga_x_origin = stbi__get16le(s);
- int tga_y_origin = stbi__get16le(s);
- int tga_width = stbi__get16le(s);
- int tga_height = stbi__get16le(s);
- int tga_bits_per_pixel = stbi__get8(s);
- int tga_comp = tga_bits_per_pixel / 8;
- int tga_inverted = stbi__get8(s);
- // image data
- unsigned char *tga_data;
- unsigned char *tga_palette = NULL;
- int i, j;
- unsigned char raw_data[4];
- int RLE_count = 0;
- int RLE_repeating = 0;
- int read_next_pixel = 1;
-
- // do a tiny bit of precessing
- if ( tga_image_type >= 8 )
- {
- tga_image_type -= 8;
- tga_is_RLE = 1;
- }
- /* int tga_alpha_bits = tga_inverted & 15; */
- tga_inverted = 1 - ((tga_inverted >> 5) & 1);
-
- // error check
- if ( //(tga_indexed) ||
- (tga_width < 1) || (tga_height < 1) ||
- (tga_image_type < 1) || (tga_image_type > 3) ||
- ((tga_bits_per_pixel != 8) && (tga_bits_per_pixel != 16) &&
- (tga_bits_per_pixel != 24) && (tga_bits_per_pixel != 32))
- )
- {
- return NULL; // we don't report this as a bad TGA because we don't even know if it's TGA
- }
-
- // If I'm paletted, then I'll use the number of bits from the palette
- if ( tga_indexed )
- {
- tga_comp = tga_palette_bits / 8;
- }
-
- // tga info
- *x = tga_width;
- *y = tga_height;
- if (comp) *comp = tga_comp;
-
- tga_data = (unsigned char*)stbi__malloc( tga_width * tga_height * tga_comp );
- if (!tga_data) return stbi__errpuc("outofmem", "Out of memory");
-
- // skip to the data's starting position (offset usually = 0)
- stbi__skip(s, tga_offset );
-
- if ( !tga_indexed && !tga_is_RLE) {
- for (i=0; i < tga_height; ++i) {
- int y = tga_inverted ? tga_height -i - 1 : i;
- stbi_uc *tga_row = tga_data + y*tga_width*tga_comp;
- stbi__getn(s, tga_row, tga_width * tga_comp);
- }
- } else {
- // do I need to load a palette?
- if ( tga_indexed)
- {
- // any data to skip? (offset usually = 0)
- stbi__skip(s, tga_palette_start );
- // load the palette
- tga_palette = (unsigned char*)stbi__malloc( tga_palette_len * tga_palette_bits / 8 );
- if (!tga_palette) {
- free(tga_data);
- return stbi__errpuc("outofmem", "Out of memory");
- }
- if (!stbi__getn(s, tga_palette, tga_palette_len * tga_palette_bits / 8 )) {
- free(tga_data);
- free(tga_palette);
- return stbi__errpuc("bad palette", "Corrupt TGA");
- }
- }
- // load the data
- for (i=0; i < tga_width * tga_height; ++i)
- {
- // if I'm in RLE mode, do I need to get a RLE stbi__pngchunk?
- if ( tga_is_RLE )
- {
- if ( RLE_count == 0 )
- {
- // yep, get the next byte as a RLE command
- int RLE_cmd = stbi__get8(s);
- RLE_count = 1 + (RLE_cmd & 127);
- RLE_repeating = RLE_cmd >> 7;
- read_next_pixel = 1;
- } else if ( !RLE_repeating )
- {
- read_next_pixel = 1;
- }
- } else
- {
- read_next_pixel = 1;
- }
- // OK, if I need to read a pixel, do it now
- if ( read_next_pixel )
- {
- // load however much data we did have
- if ( tga_indexed )
- {
- // read in 1 byte, then perform the lookup
- int pal_idx = stbi__get8(s);
- if ( pal_idx >= tga_palette_len )
- {
- // invalid index
- pal_idx = 0;
- }
- pal_idx *= tga_bits_per_pixel / 8;
- for (j = 0; j*8 < tga_bits_per_pixel; ++j)
- {
- raw_data[j] = tga_palette[pal_idx+j];
- }
- } else
- {
- // read in the data raw
- for (j = 0; j*8 < tga_bits_per_pixel; ++j)
- {
- raw_data[j] = stbi__get8(s);
- }
- }
- // clear the reading flag for the next pixel
- read_next_pixel = 0;
- } // end of reading a pixel
-
- // copy data
- for (j = 0; j < tga_comp; ++j)
- tga_data[i*tga_comp+j] = raw_data[j];
-
- // in case we're in RLE mode, keep counting down
- --RLE_count;
- }
- // do I need to invert the image?
- if ( tga_inverted )
- {
- for (j = 0; j*2 < tga_height; ++j)
- {
- int index1 = j * tga_width * tga_comp;
- int index2 = (tga_height - 1 - j) * tga_width * tga_comp;
- for (i = tga_width * tga_comp; i > 0; --i)
- {
- unsigned char temp = tga_data[index1];
- tga_data[index1] = tga_data[index2];
- tga_data[index2] = temp;
- ++index1;
- ++index2;
- }
- }
- }
- // clear my palette, if I had one
- if ( tga_palette != NULL )
- {
- free( tga_palette );
- }
- }
-
- // swap RGB
- if (tga_comp >= 3)
- {
- unsigned char* tga_pixel = tga_data;
- for (i=0; i < tga_width * tga_height; ++i)
- {
- unsigned char temp = tga_pixel[0];
- tga_pixel[0] = tga_pixel[2];
- tga_pixel[2] = temp;
- tga_pixel += tga_comp;
- }
- }
-
- // convert to target component count
- if (req_comp && req_comp != tga_comp)
- tga_data = stbi__convert_format(tga_data, tga_comp, req_comp, tga_width, tga_height);
-
- // the things I do to get rid of an error message, and yet keep
- // Microsoft's C compilers happy... [8^(
- tga_palette_start = tga_palette_len = tga_palette_bits =
- tga_x_origin = tga_y_origin = 0;
- // OK, done
- return tga_data;
-}
-
-// *************************************************************************************************
-// Photoshop PSD loader -- PD by Thatcher Ulrich, integration by Nicolas Schulz, tweaked by STB
-
-static int stbi__psd_test(stbi__context *s)
-{
- int r = (stbi__get32be(s) == 0x38425053);
- stbi__rewind(s);
- return r;
-}
-
-static stbi_uc *stbi__psd_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- int pixelCount;
- int channelCount, compression;
- int channel, i, count, len;
- int w,h;
- stbi_uc *out;
-
- // Check identifier
- if (stbi__get32be(s) != 0x38425053) // "8BPS"
- return stbi__errpuc("not PSD", "Corrupt PSD image");
-
- // Check file type version.
- if (stbi__get16be(s) != 1)
- return stbi__errpuc("wrong version", "Unsupported version of PSD image");
-
- // Skip 6 reserved bytes.
- stbi__skip(s, 6 );
-
- // Read the number of channels (R, G, B, A, etc).
- channelCount = stbi__get16be(s);
- if (channelCount < 0 || channelCount > 16)
- return stbi__errpuc("wrong channel count", "Unsupported number of channels in PSD image");
-
- // Read the rows and columns of the image.
- h = stbi__get32be(s);
- w = stbi__get32be(s);
-
- // Make sure the depth is 8 bits.
- if (stbi__get16be(s) != 8)
- return stbi__errpuc("unsupported bit depth", "PSD bit depth is not 8 bit");
-
- // Make sure the color mode is RGB.
- // Valid options are:
- // 0: Bitmap
- // 1: Grayscale
- // 2: Indexed color
- // 3: RGB color
- // 4: CMYK color
- // 7: Multichannel
- // 8: Duotone
- // 9: Lab color
- if (stbi__get16be(s) != 3)
- return stbi__errpuc("wrong color format", "PSD is not in RGB color format");
-
- // Skip the Mode Data. (It's the palette for indexed color; other info for other modes.)
- stbi__skip(s,stbi__get32be(s) );
-
- // Skip the image resources. (resolution, pen tool paths, etc)
- stbi__skip(s, stbi__get32be(s) );
-
- // Skip the reserved data.
- stbi__skip(s, stbi__get32be(s) );
-
- // Find out if the data is compressed.
- // Known values:
- // 0: no compression
- // 1: RLE compressed
- compression = stbi__get16be(s);
- if (compression > 1)
- return stbi__errpuc("bad compression", "PSD has an unknown compression format");
-
- // Create the destination image.
- out = (stbi_uc *) stbi__malloc(4 * w*h);
- if (!out) return stbi__errpuc("outofmem", "Out of memory");
- pixelCount = w*h;
-
- // Initialize the data to zero.
- //memset( out, 0, pixelCount * 4 );
-
- // Finally, the image data.
- if (compression) {
- // RLE as used by .PSD and .TIFF
- // Loop until you get the number of unpacked bytes you are expecting:
- // Read the next source byte into n.
- // If n is between 0 and 127 inclusive, copy the next n+1 bytes literally.
- // Else if n is between -127 and -1 inclusive, copy the next byte -n+1 times.
- // Else if n is 128, noop.
- // Endloop
-
- // The RLE-compressed data is preceeded by a 2-byte data count for each row in the data,
- // which we're going to just skip.
- stbi__skip(s, h * channelCount * 2 );
-
- // Read the RLE data by channel.
- for (channel = 0; channel < 4; channel++) {
- stbi_uc *p;
-
- p = out+channel;
- if (channel >= channelCount) {
- // Fill this channel with default data.
- for (i = 0; i < pixelCount; i++) *p = (channel == 3 ? 255 : 0), p += 4;
- } else {
- // Read the RLE data.
- count = 0;
- while (count < pixelCount) {
- len = stbi__get8(s);
- if (len == 128) {
- // No-op.
- } else if (len < 128) {
- // Copy next len+1 bytes literally.
- len++;
- count += len;
- while (len) {
- *p = stbi__get8(s);
- p += 4;
- len--;
- }
- } else if (len > 128) {
- stbi_uc val;
- // Next -len+1 bytes in the dest are replicated from next source byte.
- // (Interpret len as a negative 8-bit int.)
- len ^= 0x0FF;
- len += 2;
- val = stbi__get8(s);
- count += len;
- while (len) {
- *p = val;
- p += 4;
- len--;
- }
- }
- }
- }
- }
-
- } else {
- // We're at the raw image data. It's each channel in order (Red, Green, Blue, Alpha, ...)
- // where each channel consists of an 8-bit value for each pixel in the image.
-
- // Read the data by channel.
- for (channel = 0; channel < 4; channel++) {
- stbi_uc *p;
-
- p = out + channel;
- if (channel > channelCount) {
- // Fill this channel with default data.
- for (i = 0; i < pixelCount; i++) *p = channel == 3 ? 255 : 0, p += 4;
- } else {
- // Read the data.
- for (i = 0; i < pixelCount; i++)
- *p = stbi__get8(s), p += 4;
- }
- }
- }
-
- if (req_comp && req_comp != 4) {
- out = stbi__convert_format(out, 4, req_comp, w, h);
- if (out == NULL) return out; // stbi__convert_format frees input on failure
- }
-
- if (comp) *comp = channelCount;
- *y = h;
- *x = w;
-
- return out;
-}
-
-// *************************************************************************************************
-// Softimage PIC loader
-// by Tom Seddon
-//
-// See http://softimage.wiki.softimage.com/index.php/INFO:_PIC_file_format
-// See http://ozviz.wasp.uwa.edu.au/~pbourke/dataformats/softimagepic/
-
-static int stbi__pic_is4(stbi__context *s,const char *str)
-{
- int i;
- for (i=0; i<4; ++i)
- if (stbi__get8(s) != (stbi_uc)str[i])
- return 0;
-
- return 1;
-}
-
-static int stbi__pic_test_core(stbi__context *s)
-{
- int i;
-
- if (!stbi__pic_is4(s,"\x53\x80\xF6\x34"))
- return 0;
-
- for(i=0;i<84;++i)
- stbi__get8(s);
-
- if (!stbi__pic_is4(s,"PICT"))
- return 0;
-
- return 1;
-}
-
-typedef struct
-{
- stbi_uc size,type,channel;
-} stbi__pic_packet;
-
-static stbi_uc *stbi__readval(stbi__context *s, int channel, stbi_uc *dest)
-{
- int mask=0x80, i;
-
- for (i=0; i<4; ++i, mask>>=1) {
- if (channel & mask) {
- if (stbi__at_eof(s)) return stbi__errpuc("bad file","PIC file too short");
- dest[i]=stbi__get8(s);
- }
- }
-
- return dest;
-}
-
-static void stbi__copyval(int channel,stbi_uc *dest,const stbi_uc *src)
-{
- int mask=0x80,i;
-
- for (i=0;i<4; ++i, mask>>=1)
- if (channel&mask)
- dest[i]=src[i];
-}
-
-static stbi_uc *stbi__pic_load_core(stbi__context *s,int width,int height,int *comp, stbi_uc *result)
-{
- int act_comp=0,num_packets=0,y,chained;
- stbi__pic_packet packets[10];
-
- // this will (should...) cater for even some bizarre stuff like having data
- // for the same channel in multiple packets.
- do {
- stbi__pic_packet *packet;
-
- if (num_packets==sizeof(packets)/sizeof(packets[0]))
- return stbi__errpuc("bad format","too many packets");
-
- packet = &packets[num_packets++];
-
- chained = stbi__get8(s);
- packet->size = stbi__get8(s);
- packet->type = stbi__get8(s);
- packet->channel = stbi__get8(s);
-
- act_comp |= packet->channel;
-
- if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (reading packets)");
- if (packet->size != 8) return stbi__errpuc("bad format","packet isn't 8bpp");
- } while (chained);
-
- *comp = (act_comp & 0x10 ? 4 : 3); // has alpha channel?
-
- for(y=0; ytype) {
- default:
- return stbi__errpuc("bad format","packet has bad compression type");
-
- case 0: {//uncompressed
- int x;
-
- for(x=0;xchannel,dest))
- return 0;
- break;
- }
-
- case 1://Pure RLE
- {
- int left=width, i;
-
- while (left>0) {
- stbi_uc count,value[4];
-
- count=stbi__get8(s);
- if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pure read count)");
-
- if (count > left)
- count = (stbi_uc) left;
-
- if (!stbi__readval(s,packet->channel,value)) return 0;
-
- for(i=0; ichannel,dest,value);
- left -= count;
- }
- }
- break;
-
- case 2: {//Mixed RLE
- int left=width;
- while (left>0) {
- int count = stbi__get8(s), i;
- if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (mixed read count)");
-
- if (count >= 128) { // Repeated
- stbi_uc value[4];
- int i;
-
- if (count==128)
- count = stbi__get16be(s);
- else
- count -= 127;
- if (count > left)
- return stbi__errpuc("bad file","scanline overrun");
-
- if (!stbi__readval(s,packet->channel,value))
- return 0;
-
- for(i=0;ichannel,dest,value);
- } else { // Raw
- ++count;
- if (count>left) return stbi__errpuc("bad file","scanline overrun");
-
- for(i=0;ichannel,dest))
- return 0;
- }
- left-=count;
- }
- break;
- }
- }
- }
- }
-
- return result;
-}
-
-static stbi_uc *stbi__pic_load(stbi__context *s,int *px,int *py,int *comp,int req_comp)
-{
- stbi_uc *result;
- int i, x,y;
-
- for (i=0; i<92; ++i)
- stbi__get8(s);
-
- x = stbi__get16be(s);
- y = stbi__get16be(s);
- if (stbi__at_eof(s)) return stbi__errpuc("bad file","file too short (pic header)");
- if ((1 << 28) / x < y) return stbi__errpuc("too large", "Image too large to decode");
-
- stbi__get32be(s); //skip `ratio'
- stbi__get16be(s); //skip `fields'
- stbi__get16be(s); //skip `pad'
-
- // intermediate buffer is RGBA
- result = (stbi_uc *) stbi__malloc(x*y*4);
- memset(result, 0xff, x*y*4);
-
- if (!stbi__pic_load_core(s,x,y,comp, result)) {
- free(result);
- result=0;
- }
- *px = x;
- *py = y;
- if (req_comp == 0) req_comp = *comp;
- result=stbi__convert_format(result,4,req_comp,x,y);
-
- return result;
-}
-
-static int stbi__pic_test(stbi__context *s)
-{
- int r = stbi__pic_test_core(s);
- stbi__rewind(s);
- return r;
-}
-
-// *************************************************************************************************
-// GIF loader -- public domain by Jean-Marc Lienher -- simplified/shrunk by stb
-typedef struct
-{
- stbi__int16 prefix;
- stbi_uc first;
- stbi_uc suffix;
-} stbi__gif_lzw;
-
-typedef struct
-{
- int w,h;
- stbi_uc *out; // output buffer (always 4 components)
- int flags, bgindex, ratio, transparent, eflags;
- stbi_uc pal[256][4];
- stbi_uc lpal[256][4];
- stbi__gif_lzw codes[4096];
- stbi_uc *color_table;
- int parse, step;
- int lflags;
- int start_x, start_y;
- int max_x, max_y;
- int cur_x, cur_y;
- int line_size;
-} stbi__gif;
-
-static int stbi__gif_test_raw(stbi__context *s)
-{
- int sz;
- if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8') return 0;
- sz = stbi__get8(s);
- if (sz != '9' && sz != '7') return 0;
- if (stbi__get8(s) != 'a') return 0;
- return 1;
-}
-
-static int stbi__gif_test(stbi__context *s)
-{
- int r = stbi__gif_test_raw(s);
- stbi__rewind(s);
- return r;
-}
-
-static void stbi__gif_parse_colortable(stbi__context *s, stbi_uc pal[256][4], int num_entries, int transp)
-{
- int i;
- for (i=0; i < num_entries; ++i) {
- pal[i][2] = stbi__get8(s);
- pal[i][1] = stbi__get8(s);
- pal[i][0] = stbi__get8(s);
- pal[i][3] = transp ? 0 : 255;
- }
-}
-
-static int stbi__gif_header(stbi__context *s, stbi__gif *g, int *comp, int is_info)
-{
- stbi_uc version;
- if (stbi__get8(s) != 'G' || stbi__get8(s) != 'I' || stbi__get8(s) != 'F' || stbi__get8(s) != '8')
- return stbi__err("not GIF", "Corrupt GIF");
-
- version = stbi__get8(s);
- if (version != '7' && version != '9') return stbi__err("not GIF", "Corrupt GIF");
- if (stbi__get8(s) != 'a') return stbi__err("not GIF", "Corrupt GIF");
-
- stbi__g_failure_reason = "";
- g->w = stbi__get16le(s);
- g->h = stbi__get16le(s);
- g->flags = stbi__get8(s);
- g->bgindex = stbi__get8(s);
- g->ratio = stbi__get8(s);
- g->transparent = -1;
-
- if (comp != 0) *comp = 4; // can't actually tell whether it's 3 or 4 until we parse the comments
-
- if (is_info) return 1;
-
- if (g->flags & 0x80)
- stbi__gif_parse_colortable(s,g->pal, 2 << (g->flags & 7), -1);
-
- return 1;
-}
-
-static int stbi__gif_info_raw(stbi__context *s, int *x, int *y, int *comp)
-{
- stbi__gif g;
- if (!stbi__gif_header(s, &g, comp, 1)) {
- stbi__rewind( s );
- return 0;
- }
- if (x) *x = g.w;
- if (y) *y = g.h;
- return 1;
-}
-
-static void stbi__out_gif_code(stbi__gif *g, stbi__uint16 code)
-{
- stbi_uc *p, *c;
-
- // recurse to decode the prefixes, since the linked-list is backwards,
- // and working backwards through an interleaved image would be nasty
- if (g->codes[code].prefix >= 0)
- stbi__out_gif_code(g, g->codes[code].prefix);
-
- if (g->cur_y >= g->max_y) return;
-
- p = &g->out[g->cur_x + g->cur_y];
- c = &g->color_table[g->codes[code].suffix * 4];
-
- if (c[3] >= 128) {
- p[0] = c[2];
- p[1] = c[1];
- p[2] = c[0];
- p[3] = c[3];
- }
- g->cur_x += 4;
-
- if (g->cur_x >= g->max_x) {
- g->cur_x = g->start_x;
- g->cur_y += g->step;
-
- while (g->cur_y >= g->max_y && g->parse > 0) {
- g->step = (1 << g->parse) * g->line_size;
- g->cur_y = g->start_y + (g->step >> 1);
- --g->parse;
- }
- }
-}
-
-static stbi_uc *stbi__process_gif_raster(stbi__context *s, stbi__gif *g)
-{
- stbi_uc lzw_cs;
- stbi__int32 len, code;
- stbi__uint32 first;
- stbi__int32 codesize, codemask, avail, oldcode, bits, valid_bits, clear;
- stbi__gif_lzw *p;
-
- lzw_cs = stbi__get8(s);
- clear = 1 << lzw_cs;
- first = 1;
- codesize = lzw_cs + 1;
- codemask = (1 << codesize) - 1;
- bits = 0;
- valid_bits = 0;
- for (code = 0; code < clear; code++) {
- g->codes[code].prefix = -1;
- g->codes[code].first = (stbi_uc) code;
- g->codes[code].suffix = (stbi_uc) code;
- }
-
- // support no starting clear code
- avail = clear+2;
- oldcode = -1;
-
- len = 0;
- for(;;) {
- if (valid_bits < codesize) {
- if (len == 0) {
- len = stbi__get8(s); // start new block
- if (len == 0)
- return g->out;
- }
- --len;
- bits |= (stbi__int32) stbi__get8(s) << valid_bits;
- valid_bits += 8;
- } else {
- stbi__int32 code = bits & codemask;
- bits >>= codesize;
- valid_bits -= codesize;
- // @OPTIMIZE: is there some way we can accelerate the non-clear path?
- if (code == clear) { // clear code
- codesize = lzw_cs + 1;
- codemask = (1 << codesize) - 1;
- avail = clear + 2;
- oldcode = -1;
- first = 0;
- } else if (code == clear + 1) { // end of stream code
- stbi__skip(s, len);
- while ((len = stbi__get8(s)) > 0)
- stbi__skip(s,len);
- return g->out;
- } else if (code <= avail) {
- if (first) return stbi__errpuc("no clear code", "Corrupt GIF");
-
- if (oldcode >= 0) {
- p = &g->codes[avail++];
- if (avail > 4096) return stbi__errpuc("too many codes", "Corrupt GIF");
- p->prefix = (stbi__int16) oldcode;
- p->first = g->codes[oldcode].first;
- p->suffix = (code == avail) ? p->first : g->codes[code].first;
- } else if (code == avail)
- return stbi__errpuc("illegal code in raster", "Corrupt GIF");
-
- stbi__out_gif_code(g, (stbi__uint16) code);
-
- if ((avail & codemask) == 0 && avail <= 0x0FFF) {
- codesize++;
- codemask = (1 << codesize) - 1;
- }
-
- oldcode = code;
- } else {
- return stbi__errpuc("illegal code in raster", "Corrupt GIF");
- }
- }
- }
-}
-
-static void stbi__fill_gif_background(stbi__gif *g)
-{
- int i;
- stbi_uc *c = g->pal[g->bgindex];
- // @OPTIMIZE: write a dword at a time
- for (i = 0; i < g->w * g->h * 4; i += 4) {
- stbi_uc *p = &g->out[i];
- p[0] = c[2];
- p[1] = c[1];
- p[2] = c[0];
- p[3] = c[3];
- }
-}
-
-// this function is designed to support animated gifs, although stb_image doesn't support it
-static stbi_uc *stbi__gif_load_next(stbi__context *s, stbi__gif *g, int *comp, int req_comp)
-{
- int i;
- stbi_uc *old_out = 0;
-
- if (g->out == 0) {
- if (!stbi__gif_header(s, g, comp,0)) return 0; // stbi__g_failure_reason set by stbi__gif_header
- g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h);
- if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory");
- stbi__fill_gif_background(g);
- } else {
- // animated-gif-only path
- if (((g->eflags & 0x1C) >> 2) == 3) {
- old_out = g->out;
- g->out = (stbi_uc *) stbi__malloc(4 * g->w * g->h);
- if (g->out == 0) return stbi__errpuc("outofmem", "Out of memory");
- memcpy(g->out, old_out, g->w*g->h*4);
- }
- }
-
- for (;;) {
- switch (stbi__get8(s)) {
- case 0x2C: /* Image Descriptor */
- {
- stbi__int32 x, y, w, h;
- stbi_uc *o;
-
- x = stbi__get16le(s);
- y = stbi__get16le(s);
- w = stbi__get16le(s);
- h = stbi__get16le(s);
- if (((x + w) > (g->w)) || ((y + h) > (g->h)))
- return stbi__errpuc("bad Image Descriptor", "Corrupt GIF");
-
- g->line_size = g->w * 4;
- g->start_x = x * 4;
- g->start_y = y * g->line_size;
- g->max_x = g->start_x + w * 4;
- g->max_y = g->start_y + h * g->line_size;
- g->cur_x = g->start_x;
- g->cur_y = g->start_y;
-
- g->lflags = stbi__get8(s);
-
- if (g->lflags & 0x40) {
- g->step = 8 * g->line_size; // first interlaced spacing
- g->parse = 3;
- } else {
- g->step = g->line_size;
- g->parse = 0;
- }
-
- if (g->lflags & 0x80) {
- stbi__gif_parse_colortable(s,g->lpal, 2 << (g->lflags & 7), g->eflags & 0x01 ? g->transparent : -1);
- g->color_table = (stbi_uc *) g->lpal;
- } else if (g->flags & 0x80) {
- for (i=0; i < 256; ++i) // @OPTIMIZE: stbi__jpeg_reset only the previous transparent
- g->pal[i][3] = 255;
- if (g->transparent >= 0 && (g->eflags & 0x01))
- g->pal[g->transparent][3] = 0;
- g->color_table = (stbi_uc *) g->pal;
- } else
- return stbi__errpuc("missing color table", "Corrupt GIF");
-
- o = stbi__process_gif_raster(s, g);
- if (o == NULL) return NULL;
-
- if (req_comp && req_comp != 4)
- o = stbi__convert_format(o, 4, req_comp, g->w, g->h);
- return o;
- }
-
- case 0x21: // Comment Extension.
- {
- int len;
- if (stbi__get8(s) == 0xF9) { // Graphic Control Extension.
- len = stbi__get8(s);
- if (len == 4) {
- g->eflags = stbi__get8(s);
- stbi__get16le(s); // delay
- g->transparent = stbi__get8(s);
- } else {
- stbi__skip(s, len);
- break;
- }
- }
- while ((len = stbi__get8(s)) != 0)
- stbi__skip(s, len);
- break;
- }
-
- case 0x3B: // gif stream termination code
- return (stbi_uc *) s; // using '1' causes warning on some compilers
-
- default:
- return stbi__errpuc("unknown code", "Corrupt GIF");
- }
- }
-}
-
-static stbi_uc *stbi__gif_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- stbi_uc *u = 0;
- stbi__gif g;
- memset(&g, 0, sizeof(g));
-
- u = stbi__gif_load_next(s, &g, comp, req_comp);
- if (u == (stbi_uc *) s) u = 0; // end of animated gif marker
- if (u) {
- *x = g.w;
- *y = g.h;
- }
-
- return u;
-}
-
-static int stbi__gif_info(stbi__context *s, int *x, int *y, int *comp)
-{
- return stbi__gif_info_raw(s,x,y,comp);
-}
-
-
-// *************************************************************************************************
-// Radiance RGBE HDR loader
-// originally by Nicolas Schulz
-#ifndef STBI_NO_HDR
-static int stbi__hdr_test_core(stbi__context *s)
-{
- const char *signature = "#?RADIANCE\n";
- int i;
- for (i=0; signature[i]; ++i)
- if (stbi__get8(s) != signature[i])
- return 0;
- return 1;
-}
-
-static int stbi__hdr_test(stbi__context* s)
-{
- int r = stbi__hdr_test_core(s);
- stbi__rewind(s);
- return r;
-}
-
-#define STBI__HDR_BUFLEN 1024
-static char *stbi__hdr_gettoken(stbi__context *z, char *buffer)
-{
- int len=0;
- char c = '\0';
-
- c = (char) stbi__get8(z);
-
- while (!stbi__at_eof(z) && c != '\n') {
- buffer[len++] = c;
- if (len == STBI__HDR_BUFLEN-1) {
- // flush to end of line
- while (!stbi__at_eof(z) && stbi__get8(z) != '\n')
- ;
- break;
- }
- c = (char) stbi__get8(z);
- }
-
- buffer[len] = 0;
- return buffer;
-}
-
-static void stbi__hdr_convert(float *output, stbi_uc *input, int req_comp)
-{
- if ( input[3] != 0 ) {
- float f1;
- // Exponent
- f1 = (float) ldexp(1.0f, input[3] - (int)(128 + 8));
- if (req_comp <= 2)
- output[0] = (input[0] + input[1] + input[2]) * f1 / 3;
- else {
- output[0] = input[0] * f1;
- output[1] = input[1] * f1;
- output[2] = input[2] * f1;
- }
- if (req_comp == 2) output[1] = 1;
- if (req_comp == 4) output[3] = 1;
- } else {
- switch (req_comp) {
- case 4: output[3] = 1; /* fallthrough */
- case 3: output[0] = output[1] = output[2] = 0;
- break;
- case 2: output[1] = 1; /* fallthrough */
- case 1: output[0] = 0;
- break;
- }
- }
-}
-
-static float *stbi__hdr_load(stbi__context *s, int *x, int *y, int *comp, int req_comp)
-{
- char buffer[STBI__HDR_BUFLEN];
- char *token;
- int valid = 0;
- int width, height;
- stbi_uc *scanline;
- float *hdr_data;
- int len;
- unsigned char count, value;
- int i, j, k, c1,c2, z;
-
-
- // Check identifier
- if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0)
- return stbi__errpf("not HDR", "Corrupt HDR image");
-
- // Parse header
- for(;;) {
- token = stbi__hdr_gettoken(s,buffer);
- if (token[0] == 0) break;
- if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1;
- }
-
- if (!valid) return stbi__errpf("unsupported format", "Unsupported HDR format");
-
- // Parse width and height
- // can't use sscanf() if we're not using stdio!
- token = stbi__hdr_gettoken(s,buffer);
- if (strncmp(token, "-Y ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format");
- token += 3;
- height = (int) strtol(token, &token, 10);
- while (*token == ' ') ++token;
- if (strncmp(token, "+X ", 3)) return stbi__errpf("unsupported data layout", "Unsupported HDR format");
- token += 3;
- width = (int) strtol(token, NULL, 10);
-
- *x = width;
- *y = height;
-
- if (comp) *comp = 3;
- if (req_comp == 0) req_comp = 3;
-
- // Read data
- hdr_data = (float *) stbi__malloc(height * width * req_comp * sizeof(float));
-
- // Load image data
- // image data is stored as some number of sca
- if ( width < 8 || width >= 32768) {
- // Read flat data
- for (j=0; j < height; ++j) {
- for (i=0; i < width; ++i) {
- stbi_uc rgbe[4];
- main_decode_loop:
- stbi__getn(s, rgbe, 4);
- stbi__hdr_convert(hdr_data + j * width * req_comp + i * req_comp, rgbe, req_comp);
- }
- }
- } else {
- // Read RLE-encoded data
- scanline = NULL;
-
- for (j = 0; j < height; ++j) {
- c1 = stbi__get8(s);
- c2 = stbi__get8(s);
- len = stbi__get8(s);
- if (c1 != 2 || c2 != 2 || (len & 0x80)) {
- // not run-length encoded, so we have to actually use THIS data as a decoded
- // pixel (note this can't be a valid pixel--one of RGB must be >= 128)
- stbi_uc rgbe[4];
- rgbe[0] = (stbi_uc) c1;
- rgbe[1] = (stbi_uc) c2;
- rgbe[2] = (stbi_uc) len;
- rgbe[3] = (stbi_uc) stbi__get8(s);
- stbi__hdr_convert(hdr_data, rgbe, req_comp);
- i = 1;
- j = 0;
- free(scanline);
- goto main_decode_loop; // yes, this makes no sense
- }
- len <<= 8;
- len |= stbi__get8(s);
- if (len != width) { free(hdr_data); free(scanline); return stbi__errpf("invalid decoded scanline length", "corrupt HDR"); }
- if (scanline == NULL) scanline = (stbi_uc *) stbi__malloc(width * 4);
-
- for (k = 0; k < 4; ++k) {
- i = 0;
- while (i < width) {
- count = stbi__get8(s);
- if (count > 128) {
- // Run
- value = stbi__get8(s);
- count -= 128;
- for (z = 0; z < count; ++z)
- scanline[i++ * 4 + k] = value;
- } else {
- // Dump
- for (z = 0; z < count; ++z)
- scanline[i++ * 4 + k] = stbi__get8(s);
- }
- }
- }
- for (i=0; i < width; ++i)
- stbi__hdr_convert(hdr_data+(j*width + i)*req_comp, scanline + i*4, req_comp);
- }
- free(scanline);
- }
-
- return hdr_data;
-}
-
-static int stbi__hdr_info(stbi__context *s, int *x, int *y, int *comp)
-{
- char buffer[STBI__HDR_BUFLEN];
- char *token;
- int valid = 0;
-
- if (strcmp(stbi__hdr_gettoken(s,buffer), "#?RADIANCE") != 0) {
- stbi__rewind( s );
- return 0;
- }
-
- for(;;) {
- token = stbi__hdr_gettoken(s,buffer);
- if (token[0] == 0) break;
- if (strcmp(token, "FORMAT=32-bit_rle_rgbe") == 0) valid = 1;
- }
-
- if (!valid) {
- stbi__rewind( s );
- return 0;
- }
- token = stbi__hdr_gettoken(s,buffer);
- if (strncmp(token, "-Y ", 3)) {
- stbi__rewind( s );
- return 0;
- }
- token += 3;
- *y = (int) strtol(token, &token, 10);
- while (*token == ' ') ++token;
- if (strncmp(token, "+X ", 3)) {
- stbi__rewind( s );
- return 0;
- }
- token += 3;
- *x = (int) strtol(token, NULL, 10);
- *comp = 3;
- return 1;
-}
-#endif // STBI_NO_HDR
-
-static int stbi__bmp_info(stbi__context *s, int *x, int *y, int *comp)
-{
- int hsz;
- if (stbi__get8(s) != 'B' || stbi__get8(s) != 'M') {
- stbi__rewind( s );
- return 0;
- }
- stbi__skip(s,12);
- hsz = stbi__get32le(s);
- if (hsz != 12 && hsz != 40 && hsz != 56 && hsz != 108 && hsz != 124) {
- stbi__rewind( s );
- return 0;
- }
- if (hsz == 12) {
- *x = stbi__get16le(s);
- *y = stbi__get16le(s);
- } else {
- *x = stbi__get32le(s);
- *y = stbi__get32le(s);
- }
- if (stbi__get16le(s) != 1) {
- stbi__rewind( s );
- return 0;
- }
- *comp = stbi__get16le(s) / 8;
- return 1;
-}
-
-static int stbi__psd_info(stbi__context *s, int *x, int *y, int *comp)
-{
- int channelCount;
- if (stbi__get32be(s) != 0x38425053) {
- stbi__rewind( s );
- return 0;
- }
- if (stbi__get16be(s) != 1) {
- stbi__rewind( s );
- return 0;
- }
- stbi__skip(s, 6);
- channelCount = stbi__get16be(s);
- if (channelCount < 0 || channelCount > 16) {
- stbi__rewind( s );
- return 0;
- }
- *y = stbi__get32be(s);
- *x = stbi__get32be(s);
- if (stbi__get16be(s) != 8) {
- stbi__rewind( s );
- return 0;
- }
- if (stbi__get16be(s) != 3) {
- stbi__rewind( s );
- return 0;
- }
- *comp = 4;
- return 1;
-}
-
-static int stbi__pic_info(stbi__context *s, int *x, int *y, int *comp)
-{
- int act_comp=0,num_packets=0,chained;
- stbi__pic_packet packets[10];
-
- stbi__skip(s, 92);
-
- *x = stbi__get16be(s);
- *y = stbi__get16be(s);
- if (stbi__at_eof(s)) return 0;
- if ( (*x) != 0 && (1 << 28) / (*x) < (*y)) {
- stbi__rewind( s );
- return 0;
- }
-
- stbi__skip(s, 8);
-
- do {
- stbi__pic_packet *packet;
-
- if (num_packets==sizeof(packets)/sizeof(packets[0]))
- return 0;
-
- packet = &packets[num_packets++];
- chained = stbi__get8(s);
- packet->size = stbi__get8(s);
- packet->type = stbi__get8(s);
- packet->channel = stbi__get8(s);
- act_comp |= packet->channel;
-
- if (stbi__at_eof(s)) {
- stbi__rewind( s );
- return 0;
- }
- if (packet->size != 8) {
- stbi__rewind( s );
- return 0;
- }
- } while (chained);
-
- *comp = (act_comp & 0x10 ? 4 : 3);
-
- return 1;
-}
-
-static int stbi__info_main(stbi__context *s, int *x, int *y, int *comp)
-{
- if (stbi__jpeg_info(s, x, y, comp))
- return 1;
- if (stbi__png_info(s, x, y, comp))
- return 1;
- if (stbi__gif_info(s, x, y, comp))
- return 1;
- if (stbi__bmp_info(s, x, y, comp))
- return 1;
- if (stbi__psd_info(s, x, y, comp))
- return 1;
- if (stbi__pic_info(s, x, y, comp))
- return 1;
- #ifndef STBI_NO_HDR
- if (stbi__hdr_info(s, x, y, comp))
- return 1;
- #endif
- // test tga last because it's a crappy test!
- if (stbi__tga_info(s, x, y, comp))
- return 1;
- return stbi__err("unknown image type", "Image not of any known type, or corrupt");
-}
-
-#ifndef STBI_NO_STDIO
-STBIDEF int stbi_info(char const *filename, int *x, int *y, int *comp)
-{
- FILE *f = stbi__fopen(filename, "rb");
- int result;
- if (!f) return stbi__err("can't fopen", "Unable to open file");
- result = stbi_info_from_file(f, x, y, comp);
- fclose(f);
- return result;
-}
-
-STBIDEF int stbi_info_from_file(FILE *f, int *x, int *y, int *comp)
-{
- int r;
- stbi__context s;
- long pos = ftell(f);
- stbi__start_file(&s, f);
- r = stbi__info_main(&s,x,y,comp);
- fseek(f,pos,SEEK_SET);
- return r;
-}
-#endif // !STBI_NO_STDIO
-
-STBIDEF int stbi_info_from_memory(stbi_uc const *buffer, int len, int *x, int *y, int *comp)
-{
- stbi__context s;
- stbi__start_mem(&s,buffer,len);
- return stbi__info_main(&s,x,y,comp);
-}
-
-STBIDEF int stbi_info_from_callbacks(stbi_io_callbacks const *c, void *user, int *x, int *y, int *comp)
-{
- stbi__context s;
- stbi__start_callbacks(&s, (stbi_io_callbacks *) c, user);
- return stbi__info_main(&s,x,y,comp);
-}
-
-#endif // STB_IMAGE_IMPLEMENTATION
-
-/*
- revision history:
- 1.46 (2014-08-26)
- fix broken tRNS chunk (colorkey-style transparency) in non-paletted PNG
- 1.45 (2014-08-16)
- fix MSVC-ARM internal compiler error by wrapping malloc
- 1.44 (2014-08-07)
- various warning fixes from Ronny Chevalier
- 1.43 (2014-07-15)
- fix MSVC-only compiler problem in code changed in 1.42
- 1.42 (2014-07-09)
- don't define _CRT_SECURE_NO_WARNINGS (affects user code)
- fixes to stbi__cleanup_jpeg path
- added STBI_ASSERT to avoid requiring assert.h
- 1.41 (2014-06-25)
- fix search&replace from 1.36 that messed up comments/error messages
- 1.40 (2014-06-22)
- fix gcc struct-initialization warning
- 1.39 (2014-06-15)
- fix to TGA optimization when req_comp != number of components in TGA;
- fix to GIF loading because BMP wasn't rewinding (whoops, no GIFs in my test suite)
- add support for BMP version 5 (more ignored fields)
- 1.38 (2014-06-06)
- suppress MSVC warnings on integer casts truncating values
- fix accidental rename of 'skip' field of I/O
- 1.37 (2014-06-04)
- remove duplicate typedef
- 1.36 (2014-06-03)
- convert to header file single-file library
- if de-iphone isn't set, load iphone images color-swapped instead of returning NULL
- 1.35 (2014-05-27)
- various warnings
- fix broken STBI_SIMD path
- fix bug where stbi_load_from_file no longer left file pointer in correct place
- fix broken non-easy path for 32-bit BMP (possibly never used)
- TGA optimization by Arseny Kapoulkine
- 1.34 (unknown)
- use STBI_NOTUSED in stbi__resample_row_generic(), fix one more leak in tga failure case
- 1.33 (2011-07-14)
- make stbi_is_hdr work in STBI_NO_HDR (as specified), minor compiler-friendly improvements
- 1.32 (2011-07-13)
- support for "info" function for all supported filetypes (SpartanJ)
- 1.31 (2011-06-20)
- a few more leak fixes, bug in PNG handling (SpartanJ)
- 1.30 (2011-06-11)
- added ability to load files via callbacks to accomidate custom input streams (Ben Wenger)
- removed deprecated format-specific test/load functions
- removed support for installable file formats (stbi_loader) -- would have been broken for IO callbacks anyway
- error cases in bmp and tga give messages and don't leak (Raymond Barbiero, grisha)
- fix inefficiency in decoding 32-bit BMP (David Woo)
- 1.29 (2010-08-16)
- various warning fixes from Aurelien Pocheville
- 1.28 (2010-08-01)
- fix bug in GIF palette transparency (SpartanJ)
- 1.27 (2010-08-01)
- cast-to-stbi_uc to fix warnings
- 1.26 (2010-07-24)
- fix bug in file buffering for PNG reported by SpartanJ
- 1.25 (2010-07-17)
- refix trans_data warning (Won Chun)
- 1.24 (2010-07-12)
- perf improvements reading from files on platforms with lock-heavy fgetc()
- minor perf improvements for jpeg
- deprecated type-specific functions so we'll get feedback if they're needed
- attempt to fix trans_data warning (Won Chun)
- 1.23 fixed bug in iPhone support
- 1.22 (2010-07-10)
- removed image *writing* support
- stbi_info support from Jetro Lauha
- GIF support from Jean-Marc Lienher
- iPhone PNG-extensions from James Brown
- warning-fixes from Nicolas Schulz and Janez Zemva (i.stbi__err. Janez (U+017D)emva)
- 1.21 fix use of 'stbi_uc' in header (reported by jon blow)
- 1.20 added support for Softimage PIC, by Tom Seddon
- 1.19 bug in interlaced PNG corruption check (found by ryg)
- 1.18 2008-08-02
- fix a threading bug (local mutable static)
- 1.17 support interlaced PNG
- 1.16 major bugfix - stbi__convert_format converted one too many pixels
- 1.15 initialize some fields for thread safety
- 1.14 fix threadsafe conversion bug
- header-file-only version (#define STBI_HEADER_FILE_ONLY before including)
- 1.13 threadsafe
- 1.12 const qualifiers in the API
- 1.11 Support installable IDCT, colorspace conversion routines
- 1.10 Fixes for 64-bit (don't use "unsigned long")
- optimized upsampling by Fabian "ryg" Giesen
- 1.09 Fix format-conversion for PSD code (bad global variables!)
- 1.08 Thatcher Ulrich's PSD code integrated by Nicolas Schulz
- 1.07 attempt to fix C++ warning/errors again
- 1.06 attempt to fix C++ warning/errors again
- 1.05 fix TGA loading to return correct *comp and use good luminance calc
- 1.04 default float alpha is 1, not 255; use 'void *' for stbi_image_free
- 1.03 bugfixes to STBI_NO_STDIO, STBI_NO_HDR
- 1.02 support for (subset of) HDR files, float interface for preferred access to them
- 1.01 fix bug: possible bug in handling right-side up bmps... not sure
- fix bug: the stbi__bmp_load() and stbi__tga_load() functions didn't work at all
- 1.00 interface to zlib that skips zlib header
- 0.99 correct handling of alpha in palette
- 0.98 TGA loader by lonesock; dynamically add loaders (untested)
- 0.97 jpeg errors on too large a file; also catch another malloc failure
- 0.96 fix detection of invalid v value - particleman@mollyrocket forum
- 0.95 during header scan, seek to markers in case of padding
- 0.94 STBI_NO_STDIO to disable stdio usage; rename all #defines the same
- 0.93 handle jpegtran output; verbose errors
- 0.92 read 4,8,16,24,32-bit BMP files of several formats
- 0.91 output 24-bit Windows 3.0 BMP files
- 0.90 fix a few more warnings; bump version number to approach 1.0
- 0.61 bugfixes due to Marc LeBlanc, Christopher Lloyd
- 0.60 fix compiling as c++
- 0.59 fix warnings: merge Dave Moore's -Wall fixes
- 0.58 fix bug: zlib uncompressed mode len/nlen was wrong endian
- 0.57 fix bug: jpg last huffman symbol before marker was >9 bits but less than 16 available
- 0.56 fix bug: zlib uncompressed mode len vs. nlen
- 0.55 fix bug: restart_interval not initialized to 0
- 0.54 allow NULL for 'int *comp'
- 0.53 fix bug in png 3->4; speedup png decoding
- 0.52 png handles req_comp=3,4 directly; minor cleanup; jpeg comments
- 0.51 obey req_comp requests, 1-component jpegs return as 1-component,
- on 'test' only check type, not whether we support this variant
- 0.50 first released version
-*/
diff --git a/imgui.cpp b/imgui.cpp
index 32c0ca0b..eac091f8 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -1,4 +1,4 @@
-// ImGui library v1.20
+// ImGui library v1.30 wip
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' below for notes on how to setup ImGui in your codebase.
// Get latest version at https://github.com/ocornut/imgui
@@ -251,7 +251,6 @@
- optimization/render: use indexed rendering to reduce vertex data cost (for remote/networked imgui)
- optimization/render: move clip-rect to vertex data? would allow merging all commands
- optimization/render: merge command-lists with same clip-rect into one even if they aren't sequential? (as long as in-between clip rectangle don't overlap)?
- - optimization/render: font exported by bmfont is not tight fit on vertical axis, incur unneeded pixel-shading cost.
- optimization: turn some the various stack vectors into statically-sized arrays
- optimization: better clipping for multi-component widgets
- optimization: specialize for height based clipping first (assume widgets never go up + height tests before width tests?)
@@ -281,6 +280,24 @@
#pragma clang diagnostic ignored "-Wglobal-constructors" // warning : declaration requires a global destructor // similar to above, not sure what the exact difference it.
#endif
+//-------------------------------------------------------------------------
+// STB libraries implementation
+//-------------------------------------------------------------------------
+
+#define STBRP_STATIC
+#define STB_RECT_PACK_IMPLEMENTATION
+#include "stb_rect_pack.h"
+
+#define STB_TRUETYPE_IMPLEMENTATION
+#define STBTT_malloc(x,u) ((void)(u), ImGui::MemAlloc(x))
+#define STBTT_free(x,u) ((void)(u), ImGui::MemFree(x))
+#include "stb_truetype.h"
+
+struct ImGuiTextEditState;
+#define STB_TEXTEDIT_STRING ImGuiTextEditState
+#define STB_TEXTEDIT_CHARTYPE ImWchar
+#include "stb_textedit.h"
+
//-------------------------------------------------------------------------
// Forward Declarations
//-------------------------------------------------------------------------
@@ -787,11 +804,6 @@ struct ImGuiDrawContext
}
};
-struct ImGuiTextEditState;
-#define STB_TEXTEDIT_STRING ImGuiTextEditState
-#define STB_TEXTEDIT_CHARTYPE ImWchar
-#include "stb_textedit.h"
-
// Internal state of the currently focused/edited text input box
struct ImGuiTextEditState
{
@@ -841,7 +853,7 @@ struct ImGuiState
ImGuiIO IO;
ImGuiStyle Style;
float FontSize; // == IO.FontGlobalScale * IO.Font->Scale * IO.Font->Info->FontSize. Vertical distance between two lines of text, aka == CalcTextSize(" ").y
- ImVec2 FontTexUvForWhite; // == IO.Font->FontTexUvForWhite (cached copy)
+ ImVec2 FontTexUvWhitePixel; // == IO.Font->TexUvForWhite (cached copy)
float Time;
int FrameCount;
@@ -1472,10 +1484,12 @@ void ImGui::NewFrame()
{
ImGuiState& g = GImGui;
- // Check user inputs
+ // Check user data
IM_ASSERT(g.IO.DeltaTime > 0.0f);
IM_ASSERT(g.IO.DisplaySize.x >= 0.0f && g.IO.DisplaySize.y >= 0.0f);
IM_ASSERT(g.IO.RenderDrawListsFn != NULL); // Must be implemented
+ IM_ASSERT(g.IO.Font); // Font not created
+ IM_ASSERT(g.IO.Font->IsLoaded()); // Font not loaded
if (!g.Initialized)
{
@@ -1485,26 +1499,13 @@ void ImGui::NewFrame()
IM_ASSERT(g.Settings.empty());
LoadSettings();
- if (!g.IO.Font)
- {
- // Default font
- const void* fnt_data;
- unsigned int fnt_size;
- ImGui::GetDefaultFontData(&fnt_data, &fnt_size, NULL, NULL);
- g.IO.Font = (ImFont*)ImGui::MemAlloc(sizeof(ImFont));
- new(g.IO.Font) ImFont();
- g.IO.Font->LoadFromMemory(fnt_data, fnt_size);
- IM_ASSERT(g.IO.Font->IsLoaded()); // Font failed to load
- g.IO.Font->DisplayOffset = ImVec2(0.0f, +1.0f);
- }
g.Initialized = true;
}
- IM_ASSERT(g.IO.Font && g.IO.Font->IsLoaded()); // Font not loaded
IM_ASSERT(g.IO.Font->Scale > 0.0f);
- g.FontSize = g.IO.FontGlobalScale * (float)g.IO.Font->Info->FontSize * g.IO.Font->Scale;
- g.FontTexUvForWhite = g.IO.Font->TexUvForWhite;
- g.IO.Font->FallbackGlyph = NULL; // Because subsequent FindGlyph may return the fallback itself.
+ g.FontSize = g.IO.FontGlobalScale * g.IO.Font->FontSize * g.IO.Font->Scale;
+ g.FontTexUvWhitePixel = g.IO.Font->TexUvWhitePixel;
+ g.IO.Font->FallbackGlyph = NULL;
g.IO.Font->FallbackGlyph = g.IO.Font->FindGlyph(g.IO.Font->FallbackChar);
g.Time += g.IO.DeltaTime;
@@ -5865,7 +5866,7 @@ void ImDrawList::AddVtx(const ImVec2& pos, ImU32 col)
{
vtx_write->pos = pos;
vtx_write->col = col;
- vtx_write->uv = GImGui.FontTexUvForWhite;
+ vtx_write->uv = GImGui.FontTexUvWhitePixel;
vtx_write++;
}
@@ -6099,121 +6100,295 @@ void ImDrawList::AddText(ImFont* font, float font_size, const ImVec2& pos, ImU32
ImFont::ImFont()
{
Scale = 1.0f;
- DisplayOffset = ImVec2(0.0f,0.0f);
- TexUvForWhite = ImVec2(0.0f,0.0f);
+ DisplayOffset = ImVec2(0.5f, 0.5f);
FallbackChar = (ImWchar)'?';
- Data = NULL;
- DataSize = 0;
- DataOwned = false;
- Info = NULL;
- Common = NULL;
- Glyphs = NULL;
- GlyphsCount = 0;
- Kerning = NULL;
- KerningCount = 0;
- FallbackGlyph = NULL;
+ TexPixels = NULL;
+ Clear();
+}
+
+ImFont::~ImFont()
+{
+ Clear();
}
void ImFont::Clear()
{
- if (Data && DataOwned)
- ImGui::MemFree(Data);
- Data = NULL;
- DataOwned = false;
- Info = NULL;
- Common = NULL;
- Glyphs = NULL;
- GlyphsCount = 0;
- Filenames.clear();
+ if (TexPixels)
+ ImGui::MemFree(TexPixels);
+
+ DisplayOffset = ImVec2(0.5f, 0.5f);
+ FontSize = 0.0f;
+ Glyphs.clear();
IndexLookup.clear();
FallbackGlyph = NULL;
+ TexPixels = NULL;
+ TexWidth = TexHeight = 0;
+ TexExtraDataPos = ImVec2(0, 0);
+}
+
+// Retrieve list of range (2 int per range, values are inclusive)
+const ImWchar* ImFont::GetGlyphRangesDefault()
+{
+ static const ImWchar ranges[] =
+ {
+ 0x0020, 0x00FF, // Basic Latin + Latin Supplement
+ 0,
+ };
+ return &ranges[0];
+}
+
+const ImWchar* ImFont::GetGlyphRangesChinese()
+{
+ static const ImWchar ranges[] =
+ {
+ 0x0020, 0x00FF, // Basic Latin + Latin Supplement
+ 0x3040, 0x309F, // Hiragana, Katakana
+ 0xFF00, 0xFFEF, // Half-width characters
+ 0x4e00, 0x9FAF, // CJK Ideograms
+ 0,
+ };
+ return &ranges[0];
+}
+
+const ImWchar* ImFont::GetGlyphRangesJapanese()
+{
+ // Store the 1946 ideograms code points as successive offsets from the initial unicode codepoint 0x4E00. Each offset has an implicit +1.
+ // This encoding helps us reduce the source code size.
+ static const short offsets_from_0x4E00[] =
+ {
+ -1,0,1,3,0,0,0,0,1,0,5,1,1,0,7,4,6,10,0,1,9,9,7,1,3,19,1,10,7,1,0,1,0,5,1,0,6,4,2,6,0,0,12,6,8,0,3,5,0,1,0,9,0,0,8,1,1,3,4,5,13,0,0,8,2,17,
+ 4,3,1,1,9,6,0,0,0,2,1,3,2,22,1,9,11,1,13,1,3,12,0,5,9,2,0,6,12,5,3,12,4,1,2,16,1,1,4,6,5,3,0,6,13,15,5,12,8,14,0,0,6,15,3,6,0,18,8,1,6,14,1,
+ 5,4,12,24,3,13,12,10,24,0,0,0,1,0,1,1,2,9,10,2,2,0,0,3,3,1,0,3,8,0,3,2,4,4,1,6,11,10,14,6,15,3,4,15,1,0,0,5,2,2,0,0,1,6,5,5,6,0,3,6,5,0,0,1,0,
+ 11,2,2,8,4,7,0,10,0,1,2,17,19,3,0,2,5,0,6,2,4,4,6,1,1,11,2,0,3,1,2,1,2,10,7,6,3,16,0,8,24,0,0,3,1,1,3,0,1,6,0,0,0,2,0,1,5,15,0,1,0,0,2,11,19,
+ 1,4,19,7,6,5,1,0,0,0,0,5,1,0,1,9,0,0,5,0,2,0,1,0,3,0,11,3,0,2,0,0,0,0,0,9,3,6,4,12,0,14,0,0,29,10,8,0,14,37,13,0,31,16,19,0,8,30,1,20,8,3,48,
+ 21,1,0,12,0,10,44,34,42,54,11,18,82,0,2,1,2,12,1,0,6,2,17,2,12,7,0,7,17,4,2,6,24,23,8,23,39,2,16,23,1,0,5,1,2,15,14,5,6,2,11,0,8,6,2,2,2,14,
+ 20,4,15,3,4,11,10,10,2,5,2,1,30,2,1,0,0,22,5,5,0,3,1,5,4,1,0,0,2,2,21,1,5,1,2,16,2,1,3,4,0,8,4,0,0,5,14,11,2,16,1,13,1,7,0,22,15,3,1,22,7,14,
+ 22,19,11,24,18,46,10,20,64,45,3,2,0,4,5,0,1,4,25,1,0,0,2,10,0,0,0,1,0,1,2,0,0,9,1,2,0,0,0,2,5,2,1,1,5,5,8,1,1,1,5,1,4,9,1,3,0,1,0,1,1,2,0,0,
+ 2,0,1,8,22,8,1,0,0,0,0,4,2,1,0,9,8,5,0,9,1,30,24,2,6,4,39,0,14,5,16,6,26,179,0,2,1,1,0,0,0,5,2,9,6,0,2,5,16,7,5,1,1,0,2,4,4,7,15,13,14,0,0,
+ 3,0,1,0,0,0,2,1,6,4,5,1,4,9,0,3,1,8,0,0,10,5,0,43,0,2,6,8,4,0,2,0,0,9,6,0,9,3,1,6,20,14,6,1,4,0,7,2,3,0,2,0,5,0,3,1,0,3,9,7,0,3,4,0,4,9,1,6,0,
+ 9,0,0,2,3,10,9,28,3,6,2,4,1,2,32,4,1,18,2,0,3,1,5,30,10,0,2,2,2,0,7,9,8,11,10,11,7,2,13,7,5,10,0,3,40,2,0,1,6,12,0,4,5,1,5,11,11,21,4,8,3,7,
+ 8,8,33,5,23,0,0,19,8,8,2,3,0,6,1,1,1,5,1,27,4,2,5,0,3,5,6,3,1,0,3,1,12,5,3,3,2,0,7,7,2,1,0,4,0,1,1,2,0,10,10,6,2,5,9,7,5,15,15,21,6,11,5,20,
+ 4,3,5,5,2,5,0,2,1,0,1,7,28,0,9,0,5,12,5,5,18,30,0,12,3,3,21,16,25,32,9,3,14,11,24,5,66,9,1,2,0,5,9,1,5,1,8,0,8,3,3,0,1,15,1,4,8,1,2,7,0,7,2,
+ 8,3,7,5,3,7,10,2,1,0,0,2,25,0,6,4,0,10,0,4,2,4,1,12,5,38,4,0,4,1,10,5,9,4,0,14,4,2,5,18,20,21,1,3,0,5,0,7,0,3,7,1,3,1,1,8,1,0,0,0,3,2,5,2,11,
+ 6,0,13,1,3,9,1,12,0,16,6,2,1,0,2,1,12,6,13,11,2,0,28,1,7,8,14,13,8,13,0,2,0,5,4,8,10,2,37,42,19,6,6,7,4,14,11,18,14,80,7,6,0,4,72,12,36,27,
+ 7,7,0,14,17,19,164,27,0,5,10,7,3,13,6,14,0,2,2,5,3,0,6,13,0,0,10,29,0,4,0,3,13,0,3,1,6,51,1,5,28,2,0,8,0,20,2,4,0,25,2,10,13,10,0,16,4,0,1,0,
+ 2,1,7,0,1,8,11,0,0,1,2,7,2,23,11,6,6,4,16,2,2,2,0,22,9,3,3,5,2,0,15,16,21,2,9,20,15,15,5,3,9,1,0,0,1,7,7,5,4,2,2,2,38,24,14,0,0,15,5,6,24,14,
+ 5,5,11,0,21,12,0,3,8,4,11,1,8,0,11,27,7,2,4,9,21,59,0,1,39,3,60,62,3,0,12,11,0,3,30,11,0,13,88,4,15,5,28,13,1,4,48,17,17,4,28,32,46,0,16,0,
+ 18,11,1,8,6,38,11,2,6,11,38,2,0,45,3,11,2,7,8,4,30,14,17,2,1,1,65,18,12,16,4,2,45,123,12,56,33,1,4,3,4,7,0,0,0,3,2,0,16,4,2,4,2,0,7,4,5,2,26,
+ 2,25,6,11,6,1,16,2,6,17,77,15,3,35,0,1,0,5,1,0,38,16,6,3,12,3,3,3,0,9,3,1,3,5,2,9,0,18,0,25,1,3,32,1,72,46,6,2,7,1,3,14,17,0,28,1,40,13,0,20,
+ 15,40,6,38,24,12,43,1,1,9,0,12,6,0,6,2,4,19,3,7,1,48,0,9,5,0,5,6,9,6,10,15,2,11,19,3,9,2,0,1,10,1,27,8,1,3,6,1,14,0,26,0,27,16,3,4,9,6,2,23,
+ 9,10,5,25,2,1,6,1,1,48,15,9,15,14,3,4,26,60,29,13,37,21,1,6,4,0,2,11,22,23,16,16,2,2,1,3,0,5,1,6,4,0,0,4,0,0,8,3,0,2,5,0,7,1,7,3,13,2,4,10,
+ 3,0,2,31,0,18,3,0,12,10,4,1,0,7,5,7,0,5,4,12,2,22,10,4,2,15,2,8,9,0,23,2,197,51,3,1,1,4,13,4,3,21,4,19,3,10,5,40,0,4,1,1,10,4,1,27,34,7,21,
+ 2,17,2,9,6,4,2,3,0,4,2,7,8,2,5,1,15,21,3,4,4,2,2,17,22,1,5,22,4,26,7,0,32,1,11,42,15,4,1,2,5,0,19,3,1,8,6,0,10,1,9,2,13,30,8,2,24,17,19,1,4,
+ 4,25,13,0,10,16,11,39,18,8,5,30,82,1,6,8,18,77,11,13,20,75,11,112,78,33,3,0,0,60,17,84,9,1,1,12,30,10,49,5,32,158,178,5,5,6,3,3,1,3,1,4,7,6,
+ 19,31,21,0,2,9,5,6,27,4,9,8,1,76,18,12,1,4,0,3,3,6,3,12,2,8,30,16,2,25,1,5,5,4,3,0,6,10,2,3,1,0,5,1,19,3,0,8,1,5,2,6,0,0,0,19,1,2,0,5,1,2,5,
+ 1,3,7,0,4,12,7,3,10,22,0,9,5,1,0,2,20,1,1,3,23,30,3,9,9,1,4,191,14,3,15,6,8,50,0,1,0,0,4,0,0,1,0,2,4,2,0,2,3,0,2,0,2,2,8,7,0,1,1,1,3,3,17,11,
+ 91,1,9,3,2,13,4,24,15,41,3,13,3,1,20,4,125,29,30,1,0,4,12,2,21,4,5,5,19,11,0,13,11,86,2,18,0,7,1,8,8,2,2,22,1,2,6,5,2,0,1,2,8,0,2,0,5,2,1,0,
+ 2,10,2,0,5,9,2,1,2,0,1,0,4,0,0,10,2,5,3,0,6,1,0,1,4,4,33,3,13,17,3,18,6,4,7,1,5,78,0,4,1,13,7,1,8,1,0,35,27,15,3,0,0,0,1,11,5,41,38,15,22,6,
+ 14,14,2,1,11,6,20,63,5,8,27,7,11,2,2,40,58,23,50,54,56,293,8,8,1,5,1,14,0,1,12,37,89,8,8,8,2,10,6,0,0,0,4,5,2,1,0,1,1,2,7,0,3,3,0,4,6,0,3,2,
+ 19,3,8,0,0,0,4,4,16,0,4,1,5,1,3,0,3,4,6,2,17,10,10,31,6,4,3,6,10,126,7,3,2,2,0,9,0,0,5,20,13,0,15,0,6,0,2,5,8,64,50,3,2,12,2,9,0,0,11,8,20,
+ 109,2,18,23,0,0,9,61,3,0,28,41,77,27,19,17,81,5,2,14,5,83,57,252,14,154,263,14,20,8,13,6,57,39,38,
+ };
+ static int ranges_unpacked = false;
+ static ImWchar ranges[6 + 1 + IM_ARRAYSIZE(offsets_from_0x4E00)*2] =
+ {
+ 0x0020, 0x00FF, // Basic Latin + Latin Supplement
+ 0x3040, 0x309F, // Hiragana, Katakana
+ 0xFF00, 0xFFEF, // Half-width characters
+ 0,
+ };
+ if (!ranges_unpacked)
+ {
+ // Unpack
+ int codepoint = 0x4e00;
+ ImWchar* dst = &ranges[6];
+ for (int n = 0; n < IM_ARRAYSIZE(offsets_from_0x4E00); n++, dst += 2)
+ dst[0] = dst[1] = (ImWchar)(codepoint += (offsets_from_0x4E00[n] + 1));
+ dst[0] = 0;
+ ranges_unpacked = true;
+ }
+ return &ranges[0];
+}
+
+extern const unsigned int proggy_clean_ttf_compressed_size;
+extern const unsigned int proggy_clean_ttf_compressed_data[9584/4];
+extern unsigned int stb_decompress_length(unsigned char *input);
+extern unsigned int stb_decompress(unsigned char *output, unsigned char *i, unsigned int length);
+
+// Load embedded ProggyClean.ttf at size 13
+bool ImFont::LoadDefault()
+{
+ unsigned int buf_compressed_size = (int)proggy_clean_ttf_compressed_size;
+ unsigned char* buf_compressed = (unsigned char*)proggy_clean_ttf_compressed_data;
+ const size_t buf_decompressed_size = stb_decompress_length(buf_compressed);
+ unsigned char* buf_decompressed = (unsigned char *)ImGui::MemAlloc(buf_decompressed_size);
+ stb_decompress(buf_decompressed, buf_compressed, buf_compressed_size);
+ const bool ret = LoadFromMemoryTTF((void *)buf_decompressed, buf_decompressed_size, 13.0f, ImFont::GetGlyphRangesDefault(), 0);
+ ImGui::MemFree(buf_decompressed);
+ DisplayOffset.y += 1;
+ return ret;
+}
+
+bool ImFont::LoadFromFileTTF(const char* filename, float size_pixels, const ImWchar* glyph_ranges, int font_no)
+{
+ void* data = NULL;
+ size_t data_size = 0;
+ if (!ImLoadFileToMemory(filename, "rb", (void**)&data, &data_size))
+ return false;
+ const bool ret = LoadFromMemoryTTF(data, data_size, size_pixels, glyph_ranges, font_no);
+ ImGui::MemFree(data);
+ return ret;
}
-bool ImFont::LoadFromFile(const char* filename)
+static int ImUpperPowerOfTwo(int v) { v--; v |= v >> 1; v |= v >> 2; v |= v >> 4; v |= v >> 8; v |= v >> 16; v++; return v; }
+
+bool ImFont::LoadFromMemoryTTF(const void* data, size_t data_size, float size_pixels, const ImWchar* glyph_ranges, int font_no)
{
- IM_ASSERT(!IsLoaded()); // Call Clear()
+ Clear();
+ if (!glyph_ranges)
+ glyph_ranges = GetGlyphRangesDefault();
- if (!ImLoadFileToMemory(filename, "rb", (void**)&Data, &DataSize))
+ // Initialize font information
+ stbtt_fontinfo ttf_info;
+ const int font_offset = stbtt_GetFontOffsetForIndex((unsigned char*)data, font_no);
+ IM_ASSERT(font_offset >= 0);
+ if (!stbtt_InitFont(&ttf_info, (unsigned char*)data, font_offset))
return false;
- DataOwned = true;
- return LoadFromMemory(Data, DataSize);
-}
-bool ImFont::LoadFromMemory(const void* data, size_t data_size)
-{
- IM_ASSERT(!IsLoaded()); // Call Clear()
+ // Setup ranges
+ int glyph_count = 0;
+ int glyph_ranges_count = 0;
+ for (const ImWchar* p = glyph_ranges; p[0] && p[1]; p += 2)
+ {
+ glyph_count += p[1];
+ glyph_ranges_count++;
+ }
- Data = (unsigned char*)data;
- DataSize = data_size;
+ ImVector ranges;
+ ranges.resize(glyph_ranges_count);
+ for (size_t i = 0; i < ranges.size(); i++)
+ {
+ stbtt_pack_range& range = ranges[i];
+ range.font_size = size_pixels;
+ range.first_unicode_char_in_range = glyph_ranges[i*2];
+ range.num_chars_in_range = (glyph_ranges[i*2+1] - range.first_unicode_char_in_range) + 1;
+ range.chardata_for_range = (stbtt_packedchar*)ImGui::MemAlloc(range.num_chars_in_range * sizeof(stbtt_packedchar));
+ }
- // Parse data
- if (DataSize < 4 || Data[0] != 'B' || Data[1] != 'M' || Data[2] != 'F' || Data[3] != 0x03)
- return false;
- for (const unsigned char* p = Data+4; p < Data + DataSize; )
{
- const unsigned char block_type = *(unsigned char*)p;
- p += sizeof(unsigned char);
- ImU32 block_size; // use memcpy to read 4-byte because they may be unaligned. This seems to break when compiling for Emscripten.
- memcpy(&block_size, p, sizeof(ImU32));
- p += sizeof(ImU32);
+ TexWidth = 512;
+ TexHeight = 0;
+ TexPixels = NULL;
+ const int max_tex_height = 1024*16;
+ stbtt_pack_context spc;
+ int ret = stbtt_PackBegin(&spc, NULL, TexWidth, max_tex_height, 0, 1, NULL);
+ IM_ASSERT(ret);
+ stbtt_PackSetOversampling(&spc, 1, 1);
- switch (block_type)
- {
- case 1:
- IM_ASSERT(Info == NULL);
- Info = (FntInfo*)p;
- break;
- case 2:
- IM_ASSERT(Common == NULL);
- Common = (FntCommon*)p;
- break;
- case 3:
- for (const unsigned char* s = p; s < p+block_size && s < Data+DataSize; s = s + strlen((const char*)s) + 1)
- Filenames.push_back((const char*)s);
- break;
- case 4:
- IM_ASSERT(Glyphs == NULL && GlyphsCount == 0);
- Glyphs = (FntGlyph*)p;
- GlyphsCount = block_size / sizeof(FntGlyph);
- break;
- case 5:
- IM_ASSERT(Kerning == NULL && KerningCount == 0);
- Kerning = (FntKerning*)p;
- KerningCount = block_size / sizeof(FntKerning);
- break;
- default:
- break;
+ // Flag all characters as not packed
+ for (size_t i = 0; i < ranges.size(); ++i)
+ for (int j = 0; j < ranges[i].num_chars_in_range; ++j)
+ ranges[i].chardata_for_range[j].x0 = ranges[i].chardata_for_range[j].y0 = ranges[i].chardata_for_range[j].x1 = ranges[i].chardata_for_range[j].y1 = 0;
+
+ // Pack our extra data rectangle first, so it will be on the upper-left corner of our texture (UV will have small values).
+ stbrp_rect extra_rect;
+ extra_rect.w = 16;
+ extra_rect.h = 16;
+ stbrp_pack_rects((stbrp_context*)spc.pack_info, &extra_rect, 1);
+ TexExtraDataPos = ImVec2(extra_rect.x, extra_rect.y);
+
+ // Pack
+ stbrp_rect* rects = (stbrp_rect*)ImGui::MemAlloc(sizeof(*rects) * glyph_count);
+ IM_ASSERT(rects);
+ const int n = stbtt_PackFontRangesGatherRects(&spc, &ttf_info, ranges.begin(), ranges.size(), rects);
+ stbrp_pack_rects((stbrp_context*)spc.pack_info, rects, n);
+
+ // Create texture
+ int tex_h = 0;
+ for (int i = 0; i < n; i++)
+ if (rects[i].was_packed)
+ tex_h = ImMax(tex_h, rects[i].y + rects[i].h);
+ TexHeight = ImUpperPowerOfTwo(tex_h);
+ TexPixels = (unsigned char*)ImGui::MemRealloc(TexPixels, TexWidth * TexHeight);
+ memset(TexPixels, 0, TexWidth * TexHeight);
+
+ // Render characters
+ spc.pixels = TexPixels;
+ spc.height = TexHeight;
+ ret = stbtt_PackFontRangesRenderIntoRects(&spc, &ttf_info, ranges.begin(), ranges.size(), rects);
+ stbtt_PackEnd(&spc);
+ ImGui::MemFree(rects);
+ }
+
+ // Setup glyphs for runtime
+ FontSize = size_pixels;
+
+ const float font_scale = stbtt_ScaleForPixelHeight(&ttf_info, size_pixels);
+ int font_ascent, font_descent, font_line_gap;
+ stbtt_GetFontVMetrics(&ttf_info, &font_ascent, &font_descent, &font_line_gap);
+
+ const float uv_scale_x = 1.0f / TexWidth;
+ const float uv_scale_y = 1.0f / TexHeight;
+ const int character_spacing_x = 1;
+ for (size_t i = 0; i < ranges.size(); i++)
+ {
+ stbtt_pack_range& range = ranges[i];
+ for (int char_idx = 0; char_idx < range.num_chars_in_range; char_idx += 1)
+ {
+ const int codepoint = range.first_unicode_char_in_range + char_idx;
+ const stbtt_packedchar& pc = range.chardata_for_range[char_idx];
+ if (!pc.x0 && !pc.x1 && !pc.y0 && !pc.y1)
+ continue;
+
+ Glyphs.resize(Glyphs.size() + 1);
+ ImFont::Glyph& glyph = Glyphs.back();
+ glyph.Codepoint = (ImWchar)codepoint;
+ glyph.Width = pc.x1 - pc.x0 + 1;
+ glyph.Height = pc.y1 - pc.y0 + 1;
+ glyph.XOffset = (signed short)(pc.xoff);
+ glyph.YOffset = (signed short)(pc.yoff) + (int)(font_ascent * font_scale);
+ glyph.XAdvance = (signed short)(pc.xadvance + character_spacing_x); // Bake spacing into XAdvance
+ glyph.U0 = ((float)pc.x0 - 0.5f) * uv_scale_x;
+ glyph.V0 = ((float)pc.y0 - 0.5f) * uv_scale_y;
+ glyph.U1 = ((float)pc.x0 - 0.5f + glyph.Width) * uv_scale_x;
+ glyph.V1 = ((float)pc.y0 - 0.5f + glyph.Height) * uv_scale_y;
}
- p += block_size;
}
BuildLookupTable();
+
+ // Cleanup temporary
+ for (size_t i = 0; i < ranges.size(); i++)
+ ImGui::MemFree(ranges[i].chardata_for_range);
+
+ // Draw white pixel and make UV points to it
+ TexPixels[0] = TexPixels[1] = TexPixels[TexWidth+0] = TexPixels[TexWidth+1] = 0xFF;
+ TexUvWhitePixel = ImVec2(TexExtraDataPos.x + 0.5f / TexWidth, TexExtraDataPos.y + 0.5f / TexHeight);
+
return true;
}
void ImFont::BuildLookupTable()
{
- ImU32 max_c = 0;
- for (size_t i = 0; i != GlyphsCount; i++)
- if (max_c < Glyphs[i].Id)
- max_c = Glyphs[i].Id;
+ int max_codepoint = 0;
+ for (size_t i = 0; i != Glyphs.size(); i++)
+ max_codepoint = ImMax(max_codepoint, (int)Glyphs[i].Codepoint);
IndexLookup.clear();
- IndexLookup.resize(max_c + 1);
+ IndexLookup.resize((size_t)max_codepoint + 1);
for (size_t i = 0; i < IndexLookup.size(); i++)
IndexLookup[i] = -1;
- for (size_t i = 0; i < GlyphsCount; i++)
- IndexLookup[Glyphs[i].Id] = (int)i;
+ for (size_t i = 0; i < Glyphs.size(); i++)
+ IndexLookup[(int)Glyphs[i].Codepoint] = (int)i;
}
-const ImFont::FntGlyph* ImFont::FindGlyph(unsigned short c) const
+const ImFont::Glyph* ImFont::FindGlyph(unsigned short c) const
{
if (c < (int)IndexLookup.size())
{
const int i = IndexLookup[c];
- if (i >= 0 && i < (int)GlyphsCount)
- return &Glyphs[i];
+ return &Glyphs[i];
}
return FallbackGlyph;
}
@@ -6388,17 +6563,10 @@ const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const c
// List of hardcoded separators: .,;!?'"
// Skip extra blanks after a line returns (that includes not counting them in width computation)
- // e.g. "Hello world"
- // -->
- // "Hello"
- // "world"
+ // e.g. "Hello world" --> "Hello" "World"
// Cut words that cannot possibly fit within one line.
- // e.g.: "The tropical fish" with ~5 characters worth of width
- // -->
- // "The tr"
- // "opical"
- // "fish"
+ // e.g.: "The tropical fish" with ~5 characters worth of width --> "The tr" "opical" "fish"
float line_width = 0.0f;
float word_width = 0.0f;
@@ -6426,13 +6594,13 @@ const char* ImFont::CalcWordWrapPositionA(float scale, const char* text, const c
float char_width = 0.0f;
if (c == '\t')
{
- if (const FntGlyph* glyph = FindGlyph((unsigned short)' '))
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * 4 * scale;
+ if (const Glyph* glyph = FindGlyph((unsigned short)' '))
+ char_width = (glyph->XAdvance * 4) * scale;
}
else
{
- if (const FntGlyph* glyph = FindGlyph((unsigned short)c))
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * scale;
+ if (const Glyph* glyph = FindGlyph((unsigned short)c))
+ char_width = glyph->XAdvance * scale;
}
if (c == ' ' || c == '\t')
@@ -6483,8 +6651,8 @@ ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, cons
if (!text_end)
text_end = text_begin + strlen(text_begin); // FIXME-OPT
- const float scale = size / (float)Info->FontSize;
- const float line_height = (float)Info->FontSize * scale;
+ const float scale = size / FontSize;
+ const float line_height = FontSize * scale;
ImVec2 text_size = ImVec2(0,0);
float line_width = 0.0f;
@@ -6541,12 +6709,12 @@ ImVec2 ImFont::CalcTextSizeA(float size, float max_width, float wrap_width, cons
if (c == '\t')
{
// FIXME: Better TAB handling
- if (const FntGlyph* glyph = FindGlyph((unsigned short)' '))
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * 4 * scale;
+ if (const Glyph* glyph = FindGlyph((unsigned short)' '))
+ char_width = (glyph->XAdvance * 4) * scale;
}
- else if (const FntGlyph* glyph = FindGlyph((unsigned short)c))
+ else if (const Glyph* glyph = FindGlyph((unsigned short)c))
{
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * scale;
+ char_width = glyph->XAdvance * scale;
}
if (line_width + char_width >= max_width)
@@ -6573,8 +6741,8 @@ ImVec2 ImFont::CalcTextSizeW(float size, float max_width, const ImWchar* text_be
if (!text_end)
text_end = text_begin + ImStrlenW(text_begin);
- const float scale = size / (float)Info->FontSize;
- const float line_height = (float)Info->FontSize * scale;
+ const float scale = size / FontSize;
+ const float line_height = FontSize * scale;
ImVec2 text_size = ImVec2(0,0);
float line_width = 0.0f;
@@ -6597,13 +6765,13 @@ ImVec2 ImFont::CalcTextSizeW(float size, float max_width, const ImWchar* text_be
if (c == '\t')
{
// FIXME: Better TAB handling
- if (const FntGlyph* glyph = FindGlyph((unsigned short)' '))
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * 4 * scale;
+ if (const Glyph* glyph = FindGlyph((unsigned short)' '))
+ char_width = (glyph->XAdvance * 4) * scale;
}
else
{
- if (const FntGlyph* glyph = FindGlyph((unsigned short)c))
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * scale;
+ if (const Glyph* glyph = FindGlyph((unsigned short)c))
+ char_width = glyph->XAdvance * scale;
}
if (line_width + char_width >= max_width)
@@ -6630,11 +6798,8 @@ void ImFont::RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_re
if (!text_end)
text_end = text_begin + strlen(text_begin);
- const float scale = size / (float)Info->FontSize;
- const float line_height = (float)Info->FontSize * scale;
- const float tex_scale_x = 1.0f / (float)Common->ScaleW;
- const float tex_scale_y = 1.0f / (float)Common->ScaleH;
- const float outline = (float)Info->Outline;
+ const float scale = size / FontSize;
+ const float line_height = FontSize * scale;
// Align to be pixel perfect
pos.x = (float)(int)pos.x + DisplayOffset.x;
@@ -6692,46 +6857,46 @@ void ImFont::RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_re
if (c == '\t')
{
// FIXME: Better TAB handling
- if (const FntGlyph* glyph = FindGlyph((unsigned short)' '))
- char_width += (glyph->XAdvance + Info->SpacingHoriz) * 4 * scale;
+ if (const Glyph* glyph = FindGlyph((unsigned short)' '))
+ char_width += (glyph->XAdvance * 4) * scale;
}
- else if (const FntGlyph* glyph = FindGlyph((unsigned short)c))
+ else if (const Glyph* glyph = FindGlyph((unsigned short)c))
{
- char_width = (glyph->XAdvance + Info->SpacingHoriz) * scale;
+ char_width = glyph->XAdvance * scale;
if (c != ' ')
{
// Clipping on Y is more likely
- const float y1 = (float)(y + (glyph->YOffset + outline*2) * scale);
+ const float y1 = (float)(y + glyph->YOffset * scale);
const float y2 = (float)(y1 + glyph->Height * scale);
if (y1 <= clip_rect.w && y2 >= clip_rect.y)
{
- const float x1 = (float)(x + (glyph->XOffset + outline) * scale);
+ const float x1 = (float)(x + glyph->XOffset * scale);
const float x2 = (float)(x1 + glyph->Width * scale);
if (x1 <= clip_rect.z && x2 >= clip_rect.x)
{
// Render a character
- const float s1 = (glyph->X) * tex_scale_x;
- const float t1 = (glyph->Y) * tex_scale_y;
- const float s2 = (glyph->X + glyph->Width) * tex_scale_x;
- const float t2 = (glyph->Y + glyph->Height) * tex_scale_y;
+ const float u0 = glyph->U0;
+ const float v0 = glyph->V0;
+ const float u1 = glyph->U1;
+ const float v1 = glyph->V1;
out_vertices[0].pos = ImVec2(x1, y1);
- out_vertices[0].uv = ImVec2(s1, t1);
+ out_vertices[0].uv = ImVec2(u0, v0);
out_vertices[0].col = col;
out_vertices[1].pos = ImVec2(x2, y1);
- out_vertices[1].uv = ImVec2(s2, t1);
+ out_vertices[1].uv = ImVec2(u1, v0);
out_vertices[1].col = col;
out_vertices[2].pos = ImVec2(x2, y2);
- out_vertices[2].uv = ImVec2(s2, t2);
+ out_vertices[2].uv = ImVec2(u1, v1);
out_vertices[2].col = col;
out_vertices[3] = out_vertices[0];
out_vertices[4] = out_vertices[2];
out_vertices[5].pos = ImVec2(x1, y2);
- out_vertices[5].uv = ImVec2(s1, t2);
+ out_vertices[5].uv = ImVec2(u0, v1);
out_vertices[5].col = col;
out_vertices += 6;
@@ -6932,19 +7097,19 @@ void ImGui::ShowStyleEditor(ImGuiStyle* ref)
ImGui::TreePop();
}
- /*
// Font scaling options
// Note that those are not actually part of the style.
if (ImGui::TreeNode("Font"))
{
static float window_scale = 1.0f;
+ ImFont* font = ImGui::GetIO().Font;
+ ImGui::Text("Font Size: %.2f", font->FontSize);
ImGui::SliderFloat("window scale", &window_scale, 0.3f, 2.0f, "%.1f"); // scale only this window
- ImGui::SliderFloat("font scale", &ImGui::GetIO().Font->Scale, 0.3f, 2.0f, "%.1f"); // scale only this font
+ ImGui::SliderFloat("font scale", &font->Scale, 0.3f, 2.0f, "%.1f"); // scale only this font
ImGui::SliderFloat("global scale", &ImGui::GetIO().FontGlobalScale, 0.3f, 2.0f, "%.1f"); // scale everything
ImGui::SetWindowFontScale(window_scale);
ImGui::TreePop();
}
- */
ImGui::PopItemWidth();
}
@@ -7843,156 +8008,332 @@ int main(int argc, char** argv)
return 1;
}
*/
+
//-----------------------------------------------------------------------------
-static const unsigned int proggy_clean_13_png_size = 1557;
-static const unsigned int proggy_clean_13_png_data[1560/4] =
-{
- 0x474e5089, 0x0a1a0a0d, 0x0d000000, 0x52444849, 0x00010000, 0x80000000, 0x00000308, 0x476bd300, 0x00000038, 0x544c5006, 0x00000045, 0xa5ffffff,
- 0x00dd9fd9, 0x74010000, 0x00534e52, 0x66d8e640, 0xbd050000, 0x54414449, 0x9bed5e78, 0x30e36e51, 0xeef5440c, 0x31fde97f, 0x584ec0f0, 0x681ace39,
- 0xca120e6b, 0x1c5a28a6, 0xc5d98a89, 0x1a3d602e, 0x323c0043, 0xf6bc9e68, 0xbe3ad62c, 0x3d60260f, 0x82d60096, 0xe0bfc707, 0xfb9bf1d1, 0xbf0267ac,
- 0x1600260f, 0x061229c0, 0x0000c183, 0x37162c58, 0xdfa088fc, 0xde7d5704, 0x77fcbb80, 0x48e5c3f1, 0x73d8b8f8, 0xc4af7802, 0x1ca111ad, 0x0001ed7a,
- 0x76eda3ef, 0xb78d3e00, 0x801c7203, 0x0215c0b1, 0x0410b044, 0xa85100d4, 0x07627ec7, 0x0cf83fa8, 0x94001a22, 0xf87347f1, 0xdcb5cfc1, 0x1c3880cc,
- 0xd4e034ca, 0xfa928d9d, 0xb0167e31, 0x325cc570, 0x4bbd584b, 0xbd4e6574, 0x70bae084, 0xf0c0008a, 0x3f601ddb, 0x0bba506a, 0xa58a0082, 0x5b46946e,
- 0x720a4ccd, 0xdfaaed39, 0x25dc8042, 0x7ee403f4, 0x2ad69cc9, 0x6c4b3009, 0x429037ed, 0x0293f875, 0x1a69dced, 0xab120198, 0x61c01d88, 0xcf2e43dc,
- 0xfc3c00ef, 0xc049a270, 0xdbbea582, 0x0d592601, 0xc3c9a8dd, 0x5013d143, 0x19a47bbb, 0xf89253dd, 0x0a9901dc, 0x38900ecd, 0xb2dec9d7, 0xc2b91230,
- 0xb8e0106f, 0x976404cb, 0x5d83c3f3, 0x6e8086fd, 0x5c9ab007, 0xf50354f6, 0xe7e72002, 0x4bc870ca, 0xab49736f, 0xc137c6e0, 0xa9aa6ff3, 0xbff84f2f,
- 0x673e6e20, 0xf6e3c7e0, 0x618fe05a, 0x39ca2a00, 0x93ca03b4, 0x3a9d2728, 0xbbebba41, 0xce0e3681, 0x6e29ec05, 0x111eca83, 0xfdfe7ec1, 0xa7c8a75b,
- 0xac6bc3ab, 0x72a5bc25, 0x9f612c1c, 0x378ec05e, 0x7202b157, 0x789e5a82, 0x5256bc0e, 0xcb900996, 0x10721105, 0x00823ce0, 0x69ab59fb, 0x39c72084,
- 0xf5e37b25, 0xd1794700, 0x538d0637, 0x9a2bff4f, 0xce0d43a4, 0xa6da7ed2, 0xd7095132, 0xf5ad6232, 0x9aaa8e9c, 0xd8d1d3ed, 0x058940a1, 0x21f00d64,
- 0x89a5c9de, 0x021b3f24, 0x77a97aac, 0x714be65a, 0x5e2d57ae, 0x27e3610f, 0x28809288, 0x36b9559f, 0xd00e347a, 0x0094e385, 0x565d034d, 0x7f52d5f2,
- 0x9aea81de, 0x5e804909, 0x010d7f0a, 0x8f0d3fb1, 0xbbce23bc, 0x375e85ac, 0x01fa03b9, 0xc0526c3a, 0xf7866870, 0x9d46d804, 0x158ebf64, 0x7bd534c5,
- 0xd80cf202, 0x410ee80f, 0x79419915, 0x74a844ae, 0x94119881, 0xcbbcc0fc, 0xa263d471, 0x013d0269, 0x67f6a0f8, 0x3e4474d0, 0xd1e50cb5, 0x56fd0e60,
- 0xc4c0fd4c, 0x940629ff, 0xe18a7a16, 0xcca0330f, 0xb8ed50b7, 0x6935778b, 0x3735c791, 0x3909eb94, 0x0be36620, 0x0ac0d7aa, 0xefe942c9, 0xf0092727,
- 0x5c020ee2, 0x0246da53, 0xa24be8bc, 0xa891ab94, 0xd012c7e2, 0x9c115954, 0xde0dac8e, 0x555dc022, 0x59e84f77, 0xbed2cf80, 0xe9af2cda, 0x4b600716,
- 0x8955bd80, 0x7098c3f3, 0x25a8466a, 0x4ddbf26a, 0x5f554753, 0xf4890f28, 0x886a27ab, 0x54a00413, 0x0a157ca9, 0x52909a80, 0x7122a312, 0x0024a75c,
- 0xe6d72935, 0xecde29cf, 0x025de009, 0x7995a6aa, 0x4a180491, 0x013df0d8, 0xe009edba, 0xd40019dc, 0x45b36b2a, 0x0122eb0d, 0x6e80a79f, 0x746590f5,
- 0xd1a6dd49, 0xc05954b6, 0x83d4b957, 0xa00fe5b1, 0x59695ad7, 0xcff8433d, 0x44a0f340, 0xdd226c73, 0x5537f08c, 0xe1e89c32, 0x431056af, 0x233eb000,
- 0x60773f40, 0xed7e490a, 0xc160091f, 0x12829db5, 0x43fbe6cf, 0x0a6b26c2, 0xd5f0f35a, 0xfc09fda8, 0x73525f8c, 0x2ea38cf9, 0x32bc410b, 0x94a60a22,
- 0x1f62a42b, 0x5f290034, 0x07beaa91, 0x1e8ccb40, 0x17d6b0f9, 0xa2a017c9, 0x4c79a610, 0xa1de6525, 0xe975029f, 0xe063585f, 0x6246cfbb, 0x04acad44,
- 0xe6a05138, 0xd03d8434, 0xc9950013, 0x5d4c809e, 0xfd26932d, 0x739213ac, 0xe260d8ef, 0xe4164617, 0x16fc60aa, 0x1d0b21e7, 0x445004b4, 0x13fd1b59,
- 0x56b0f804, 0xaa936a3a, 0x335459c1, 0xb37f8caa, 0x06b68e03, 0x14d5eb01, 0x8300c78c, 0x9674792a, 0x20ba791b, 0x4d88024d, 0xef747354, 0x451e673e,
- 0xc4dafc9a, 0xe53b9cd1, 0x32b4011a, 0x3d702c0f, 0x09bc0b40, 0x220d277d, 0x47eb7809, 0x8a946500, 0x7a28c4bd, 0x96e00f99, 0xc04365da, 0x05edcf46,
- 0x7dee2c27, 0xe6020b7f, 0x159ecedf, 0xcbdb00ff, 0x516bb9e3, 0xd0716161, 0xeba75956, 0xf17fc22b, 0x5c578beb, 0xfe474a09, 0xc1750a87, 0xe384c189,
- 0x5df54e26, 0xa6f76b79, 0xd4b172be, 0x3e8d5ceb, 0x832d90ec, 0x180368e7, 0x354c724d, 0x1a8b1412, 0x8de07be9, 0xaf009efe, 0x4616c621, 0x2860eb01,
- 0x244f1404, 0xc3de724b, 0x6497a802, 0xab2f4419, 0x4e02910d, 0xe3ecf410, 0x7a6404a8, 0x8c72b112, 0xde5bc706, 0xd4f8ffe9, 0x50176344, 0x7b49fe7d,
- 0x02c1d88c, 0x25634a40, 0x194804f7, 0x03b76d84, 0x392bde58, 0xdeebad27, 0xc160c021, 0xa97a72db, 0xa8040b83, 0x78804f3e, 0x046b9433, 0x178cc824,
- 0x62800897, 0x7010370b, 0x21cfe7e4, 0x8053ec40, 0xf9d60526, 0xae9d353f, 0x069b40c7, 0x80496f14, 0x57e682b3, 0x6e0273e0, 0x974e2e28, 0x60ab7c3d,
- 0x2025ba33, 0x507b3a8c, 0x12b70173, 0xd095c400, 0xee012d96, 0x6e194c9a, 0xe5933f89, 0x43b70102, 0xf30306aa, 0xc5802189, 0x53c077c3, 0x86029009,
- 0xa0c1e780, 0xa4c04c1f, 0x93dbd580, 0xf8149809, 0x06021893, 0x3060c183, 0x83060c18, 0x183060c1, 0xc183060c, 0x0c183060, 0x60c18306, 0xfe0c1830,
- 0x0cb69501, 0x7a40d9df, 0x000000dd, 0x4e454900, 0x6042ae44, 0x00000082,
-};
+// Decompressor from stb.h (public domain) by Sean Barrett
+// https://github.com/nothings/stb/blob/master/stb.h
-static const unsigned int proggy_clean_13_fnt_size = 4647;
-static const unsigned int proggy_clean_13_fnt_data[4648/4] =
-{
- 0x03464d42, 0x00001a01, 0x40000d00, 0x01006400, 0x00000000, 0x50000101, 0x67676f72, 0x656c4379, 0x02006e61, 0x0000000f, 0x000a000d, 0x00800100,
- 0x01000001, 0x03000000, 0x00000016, 0x676f7270, 0x635f7967, 0x6e61656c, 0x5f33315f, 0x6e702e30, 0xd0040067, 0x00000011, 0x2e000000, 0x07000e00,
- 0x00000d00, 0x07000000, 0x010f0000, 0x36000000, 0x05003800, 0x01000d00, 0x07000000, 0x020f0000, 0x86000000, 0x07000e00, 0x00000d00, 0x07000000,
- 0x030f0000, 0x07000000, 0x06001c00, 0x01000d00, 0x07000000, 0x040f0000, 0x15000000, 0x06001c00, 0x01000d00, 0x07000000, 0x050f0000, 0x23000000,
- 0x06001c00, 0x01000d00, 0x07000000, 0x060f0000, 0x31000000, 0x06001c00, 0x01000d00, 0x07000000, 0x070f0000, 0xfc000000, 0x03003800, 0x02000d00,
- 0x07000000, 0x080f0000, 0x54000000, 0x05003800, 0x01000d00, 0x07000000, 0x090f0000, 0x4d000000, 0x06001c00, 0x01000d00, 0x07000000, 0x0a0f0000,
- 0xa8000000, 0x06001c00, 0x01000d00, 0x07000000, 0x0b0f0000, 0x6a000000, 0x04004600, 0x00000d00, 0x07000000, 0x0c0f0000, 0x74000000, 0x04004600,
- 0x00000d00, 0x07000000, 0x0d0f0000, 0x88000000, 0x04004600, 0x03000d00, 0x07000000, 0x0e0f0000, 0x65000000, 0x04004600, 0x03000d00, 0x07000000,
- 0x0f0f0000, 0x36000000, 0x07000e00, 0x00000d00, 0x07000000, 0x100f0000, 0x5a000000, 0x05003800, 0x00000d00, 0x07000000, 0x110f0000, 0x60000000,
- 0x05003800, 0x00000d00, 0x07000000, 0x120f0000, 0xe4000000, 0x03004600, 0x01000d00, 0x07000000, 0x130f0000, 0xe0000000, 0x03004600, 0x01000d00,
- 0x07000000, 0x140f0000, 0x66000000, 0x05003800, 0x00000d00, 0x07000000, 0x150f0000, 0x6c000000, 0x05003800, 0x00000d00, 0x07000000, 0x160f0000,
- 0x72000000, 0x05003800, 0x00000d00, 0x07000000, 0x170f0000, 0xd8000000, 0x03004600, 0x00000d00, 0x07000000, 0x180f0000, 0xcc000000, 0x03004600,
- 0x01000d00, 0x07000000, 0x190f0000, 0xc8000000, 0x03004600, 0x02000d00, 0x07000000, 0x1a0f0000, 0x78000000, 0x05003800, 0x00000d00, 0x07000000,
- 0x1b0f0000, 0x84000000, 0x05003800, 0x00000d00, 0x07000000, 0x1c0f0000, 0x00000000, 0x15000000, 0xf9000d00, 0x070000ff, 0x1d0f0000, 0xb0000000,
- 0x15000000, 0xf9000d00, 0x070000ff, 0x1e0f0000, 0x2c000000, 0x15000000, 0xf9000d00, 0x070000ff, 0x200f0000, 0x9a000000, 0x15000000, 0xf9000d00,
- 0x070000ff, 0x210f0000, 0x0c000000, 0x01005400, 0x03000d00, 0x07000000, 0x220f0000, 0xbc000000, 0x03004600, 0x02000d00, 0x07000000, 0x230f0000,
- 0x4e000000, 0x07000e00, 0x00000d00, 0x07000000, 0x240f0000, 0x8a000000, 0x05003800, 0x01000d00, 0x07000000, 0x250f0000, 0xa6000000, 0x07000e00,
- 0x00000d00, 0x07000000, 0x260f0000, 0xf4000000, 0x06000e00, 0x01000d00, 0x07000000, 0x270f0000, 0x06000000, 0x01005400, 0x03000d00, 0x07000000,
- 0x280f0000, 0xb8000000, 0x03004600, 0x02000d00, 0x07000000, 0x290f0000, 0xb4000000, 0x03004600, 0x02000d00, 0x07000000, 0x2a0f0000, 0x90000000,
- 0x05003800, 0x01000d00, 0x07000000, 0x2b0f0000, 0x96000000, 0x05003800, 0x01000d00, 0x07000000, 0x2c0f0000, 0xe8000000, 0x02004600, 0x01000d00,
- 0x07000000, 0x2d0f0000, 0x9c000000, 0x05003800, 0x01000d00, 0x07000000, 0x2e0f0000, 0x04000000, 0x01005400, 0x02000d00, 0x07000000, 0x2f0f0000,
- 0xa2000000, 0x05003800, 0x01000d00, 0x07000000, 0x300f0000, 0xae000000, 0x05003800, 0x01000d00, 0x07000000, 0x310f0000, 0xd8000000, 0x05003800,
- 0x01000d00, 0x07000000, 0x320f0000, 0xfa000000, 0x05000000, 0x01000d00, 0x07000000, 0x330f0000, 0x31000000, 0x05002a00, 0x01000d00, 0x07000000,
- 0x340f0000, 0x3f000000, 0x06001c00, 0x01000d00, 0x07000000, 0x350f0000, 0x37000000, 0x05002a00, 0x01000d00, 0x07000000, 0x360f0000, 0x3d000000,
- 0x05002a00, 0x01000d00, 0x07000000, 0x370f0000, 0x43000000, 0x05002a00, 0x01000d00, 0x07000000, 0x380f0000, 0x49000000, 0x05002a00, 0x01000d00,
- 0x07000000, 0x390f0000, 0x4f000000, 0x05002a00, 0x01000d00, 0x07000000, 0x3a0f0000, 0x02000000, 0x01005400, 0x03000d00, 0x07000000, 0x3b0f0000,
- 0xfa000000, 0x02004600, 0x01000d00, 0x07000000, 0x3c0f0000, 0x77000000, 0x06001c00, 0x00000d00, 0x07000000, 0x3d0f0000, 0x7e000000, 0x06001c00,
- 0x01000d00, 0x07000000, 0x3e0f0000, 0x85000000, 0x06001c00, 0x01000d00, 0x07000000, 0x3f0f0000, 0x55000000, 0x05002a00, 0x01000d00, 0x07000000,
- 0x400f0000, 0xae000000, 0x07000e00, 0x00000d00, 0x07000000, 0x410f0000, 0xe0000000, 0x06001c00, 0x01000d00, 0x07000000, 0x420f0000, 0xa1000000,
- 0x06001c00, 0x01000d00, 0x07000000, 0x430f0000, 0x5b000000, 0x05002a00, 0x01000d00, 0x07000000, 0x440f0000, 0xaf000000, 0x06001c00, 0x01000d00,
- 0x07000000, 0x450f0000, 0x61000000, 0x05002a00, 0x01000d00, 0x07000000, 0x460f0000, 0x67000000, 0x05002a00, 0x01000d00, 0x07000000, 0x470f0000,
- 0x38000000, 0x06001c00, 0x01000d00, 0x07000000, 0x480f0000, 0x8c000000, 0x06001c00, 0x01000d00, 0x07000000, 0x490f0000, 0xa0000000, 0x03004600,
- 0x02000d00, 0x07000000, 0x4a0f0000, 0x97000000, 0x04004600, 0x01000d00, 0x07000000, 0x4b0f0000, 0xb6000000, 0x06001c00, 0x01000d00, 0x07000000,
- 0x4c0f0000, 0x6d000000, 0x05002a00, 0x01000d00, 0x07000000, 0x4d0f0000, 0x1e000000, 0x07000e00, 0x00000d00, 0x07000000, 0x4e0f0000, 0x23000000,
- 0x06002a00, 0x01000d00, 0x07000000, 0x4f0f0000, 0xed000000, 0x06000e00, 0x01000d00, 0x07000000, 0x500f0000, 0x73000000, 0x05002a00, 0x01000d00,
- 0x07000000, 0x510f0000, 0x00000000, 0x06001c00, 0x01000d00, 0x07000000, 0x520f0000, 0x0e000000, 0x06001c00, 0x01000d00, 0x07000000, 0x530f0000,
- 0x1c000000, 0x06001c00, 0x01000d00, 0x07000000, 0x540f0000, 0x66000000, 0x07000e00, 0x00000d00, 0x07000000, 0x550f0000, 0x2a000000, 0x06001c00,
- 0x01000d00, 0x07000000, 0x560f0000, 0x6e000000, 0x07000e00, 0x00000d00, 0x07000000, 0x570f0000, 0x76000000, 0x07000e00, 0x00000d00, 0x07000000,
- 0x580f0000, 0x46000000, 0x06001c00, 0x01000d00, 0x07000000, 0x590f0000, 0x7e000000, 0x07000e00, 0x00000d00, 0x07000000, 0x5a0f0000, 0x54000000,
- 0x06001c00, 0x01000d00, 0x07000000, 0x5b0f0000, 0x9c000000, 0x03004600, 0x02000d00, 0x07000000, 0x5c0f0000, 0x79000000, 0x05002a00, 0x01000d00,
- 0x07000000, 0x5d0f0000, 0xdc000000, 0x03004600, 0x02000d00, 0x07000000, 0x5e0f0000, 0x7f000000, 0x05002a00, 0x01000d00, 0x07000000, 0x5f0f0000,
- 0xc6000000, 0x07000e00, 0x00000d00, 0x07000000, 0x600f0000, 0xfd000000, 0x02004600, 0x02000d00, 0x07000000, 0x610f0000, 0x85000000, 0x05002a00,
- 0x01000d00, 0x07000000, 0x620f0000, 0x8b000000, 0x05002a00, 0x01000d00, 0x07000000, 0x630f0000, 0x91000000, 0x05002a00, 0x01000d00, 0x07000000,
- 0x640f0000, 0x97000000, 0x05002a00, 0x01000d00, 0x07000000, 0x650f0000, 0x9d000000, 0x05002a00, 0x01000d00, 0x07000000, 0x660f0000, 0xa3000000,
- 0x05002a00, 0x01000d00, 0x07000000, 0x670f0000, 0xa9000000, 0x05002a00, 0x01000d00, 0x07000000, 0x680f0000, 0xaf000000, 0x05002a00, 0x01000d00,
- 0x07000000, 0x690f0000, 0xee000000, 0x02004600, 0x02000d00, 0x07000000, 0x6a0f0000, 0x92000000, 0x04004600, 0x01000d00, 0x07000000, 0x6b0f0000,
- 0xb5000000, 0x05002a00, 0x01000d00, 0x07000000, 0x6c0f0000, 0xfd000000, 0x02002a00, 0x02000d00, 0x07000000, 0x6d0f0000, 0x8e000000, 0x07000e00,
- 0x00000d00, 0x07000000, 0x6e0f0000, 0xbb000000, 0x05002a00, 0x01000d00, 0x07000000, 0x6f0f0000, 0xc1000000, 0x05002a00, 0x01000d00, 0x07000000,
- 0x700f0000, 0xc7000000, 0x05002a00, 0x01000d00, 0x07000000, 0x710f0000, 0xcd000000, 0x05002a00, 0x01000d00, 0x07000000, 0x720f0000, 0xd3000000,
- 0x05002a00, 0x01000d00, 0x07000000, 0x730f0000, 0xd9000000, 0x05002a00, 0x01000d00, 0x07000000, 0x740f0000, 0x7e000000, 0x04004600, 0x02000d00,
- 0x07000000, 0x750f0000, 0xdf000000, 0x05002a00, 0x01000d00, 0x07000000, 0x760f0000, 0xe5000000, 0x05002a00, 0x01000d00, 0x07000000, 0x770f0000,
- 0xbe000000, 0x07000e00, 0x00000d00, 0x07000000, 0x780f0000, 0xeb000000, 0x05002a00, 0x01000d00, 0x07000000, 0x790f0000, 0xf1000000, 0x05002a00,
- 0x01000d00, 0x07000000, 0x7a0f0000, 0xf7000000, 0x05002a00, 0x01000d00, 0x07000000, 0x7b0f0000, 0x00000000, 0x05003800, 0x01000d00, 0x07000000,
- 0x7c0f0000, 0x00000000, 0x01005400, 0x03000d00, 0x07000000, 0x7d0f0000, 0x06000000, 0x05003800, 0x01000d00, 0x07000000, 0x7e0f0000, 0x16000000,
- 0x07000e00, 0x00000d00, 0x07000000, 0x7f0f0000, 0x58000000, 0x15000000, 0xf9000d00, 0x070000ff, 0x810f0000, 0x16000000, 0x15000000, 0xf9000d00,
- 0x070000ff, 0x8d0f0000, 0x00000000, 0x15000e00, 0xf9000d00, 0x070000ff, 0x8f0f0000, 0xc6000000, 0x15000000, 0xf9000d00, 0x070000ff, 0x900f0000,
- 0x6e000000, 0x15000000, 0xf9000d00, 0x070000ff, 0x9d0f0000, 0x84000000, 0x15000000, 0xf9000d00, 0x070000ff, 0xa00f0000, 0xdc000000, 0x15000000,
- 0xf9000d00, 0x070000ff, 0xa10f0000, 0x0a000000, 0x01005400, 0x03000d00, 0x07000000, 0xa20f0000, 0x0c000000, 0x05003800, 0x01000d00, 0x07000000,
- 0xa30f0000, 0x12000000, 0x05003800, 0x01000d00, 0x07000000, 0xa40f0000, 0x96000000, 0x07000e00, 0x00000d00, 0x07000000, 0xa50f0000, 0x5e000000,
- 0x07000e00, 0x00000d00, 0x07000000, 0xa60f0000, 0x08000000, 0x01005400, 0x03000d00, 0x07000000, 0xa70f0000, 0x18000000, 0x05003800, 0x01000d00,
- 0x07000000, 0xa80f0000, 0xac000000, 0x03004600, 0x02000d00, 0x07000000, 0xa90f0000, 0x56000000, 0x07000e00, 0x00000d00, 0x07000000, 0xaa0f0000,
- 0x8d000000, 0x04004600, 0x01000d00, 0x07000000, 0xab0f0000, 0x1e000000, 0x05003800, 0x01000d00, 0x07000000, 0xac0f0000, 0xfb000000, 0x04000e00,
- 0x01000d00, 0x07000000, 0xad0f0000, 0x42000000, 0x15000000, 0xf9000d00, 0x070000ff, 0xae0f0000, 0x3e000000, 0x07000e00, 0x00000d00, 0x07000000,
- 0xaf0f0000, 0x26000000, 0x07000e00, 0x00000d00, 0x07000000, 0xb00f0000, 0x6f000000, 0x04004600, 0x01000d00, 0x07000000, 0xb10f0000, 0x24000000,
- 0x05003800, 0x01000d00, 0x07000000, 0xb20f0000, 0x79000000, 0x04004600, 0x01000d00, 0x07000000, 0xb30f0000, 0x83000000, 0x04004600, 0x01000d00,
- 0x07000000, 0xb40f0000, 0xeb000000, 0x02004600, 0x03000d00, 0x07000000, 0xb50f0000, 0x46000000, 0x07000e00, 0x00000d00, 0x07000000, 0xb60f0000,
- 0xe6000000, 0x06000e00, 0x01000d00, 0x07000000, 0xb70f0000, 0xc0000000, 0x03004600, 0x02000d00, 0x07000000, 0xb80f0000, 0xf7000000, 0x02004600,
- 0x03000d00, 0x07000000, 0xb90f0000, 0xc4000000, 0x03004600, 0x01000d00, 0x07000000, 0xba0f0000, 0x60000000, 0x04004600, 0x01000d00, 0x07000000,
- 0xbb0f0000, 0x2a000000, 0x05003800, 0x01000d00, 0x07000000, 0xbc0f0000, 0x1c000000, 0x06002a00, 0x01000d00, 0x07000000, 0xbd0f0000, 0xc4000000,
- 0x06001c00, 0x01000d00, 0x07000000, 0xbe0f0000, 0x9e000000, 0x07000e00, 0x00000d00, 0x07000000, 0xbf0f0000, 0x30000000, 0x05003800, 0x01000d00,
- 0x07000000, 0xc00f0000, 0x9a000000, 0x06001c00, 0x01000d00, 0x07000000, 0xc10f0000, 0x93000000, 0x06001c00, 0x01000d00, 0x07000000, 0xc20f0000,
- 0x70000000, 0x06001c00, 0x01000d00, 0x07000000, 0xc30f0000, 0x69000000, 0x06001c00, 0x01000d00, 0x07000000, 0xc40f0000, 0x62000000, 0x06001c00,
- 0x01000d00, 0x07000000, 0xc50f0000, 0x5b000000, 0x06001c00, 0x01000d00, 0x07000000, 0xc60f0000, 0xf2000000, 0x07000000, 0x00000d00, 0x07000000,
- 0xc70f0000, 0xbd000000, 0x06001c00, 0x01000d00, 0x07000000, 0xc80f0000, 0x3c000000, 0x05003800, 0x01000d00, 0x07000000, 0xc90f0000, 0x42000000,
- 0x05003800, 0x01000d00, 0x07000000, 0xca0f0000, 0x48000000, 0x05003800, 0x01000d00, 0x07000000, 0xcb0f0000, 0x4e000000, 0x05003800, 0x01000d00,
- 0x07000000, 0xcc0f0000, 0xa4000000, 0x03004600, 0x02000d00, 0x07000000, 0xcd0f0000, 0xb0000000, 0x03004600, 0x02000d00, 0x07000000, 0xce0f0000,
- 0xa8000000, 0x03004600, 0x02000d00, 0x07000000, 0xcf0f0000, 0xfc000000, 0x03001c00, 0x02000d00, 0x07000000, 0xd00f0000, 0xce000000, 0x07000e00,
- 0x00000d00, 0x07000000, 0xd10f0000, 0xcb000000, 0x06001c00, 0x01000d00, 0x07000000, 0xd20f0000, 0xd2000000, 0x06001c00, 0x01000d00, 0x07000000,
- 0xd30f0000, 0xd9000000, 0x06001c00, 0x01000d00, 0x07000000, 0xd40f0000, 0x2a000000, 0x06002a00, 0x01000d00, 0x07000000, 0xd50f0000, 0xe7000000,
- 0x06001c00, 0x01000d00, 0x07000000, 0xd60f0000, 0xee000000, 0x06001c00, 0x01000d00, 0x07000000, 0xd70f0000, 0x7e000000, 0x05003800, 0x01000d00,
- 0x07000000, 0xd80f0000, 0xf5000000, 0x06001c00, 0x01000d00, 0x07000000, 0xd90f0000, 0x00000000, 0x06002a00, 0x01000d00, 0x07000000, 0xda0f0000,
- 0x07000000, 0x06002a00, 0x01000d00, 0x07000000, 0xdb0f0000, 0x0e000000, 0x06002a00, 0x01000d00, 0x07000000, 0xdc0f0000, 0x15000000, 0x06002a00,
- 0x01000d00, 0x07000000, 0xdd0f0000, 0xd6000000, 0x07000e00, 0x00000d00, 0x07000000, 0xde0f0000, 0xa8000000, 0x05003800, 0x01000d00, 0x07000000,
- 0xdf0f0000, 0xde000000, 0x07000e00, 0x00000d00, 0x07000000, 0xe00f0000, 0xb4000000, 0x05003800, 0x01000d00, 0x07000000, 0xe10f0000, 0xba000000,
- 0x05003800, 0x01000d00, 0x07000000, 0xe20f0000, 0xc0000000, 0x05003800, 0x01000d00, 0x07000000, 0xe30f0000, 0xc6000000, 0x05003800, 0x01000d00,
- 0x07000000, 0xe40f0000, 0xcc000000, 0x05003800, 0x01000d00, 0x07000000, 0xe50f0000, 0xd2000000, 0x05003800, 0x01000d00, 0x07000000, 0xe60f0000,
- 0xb6000000, 0x07000e00, 0x00000d00, 0x07000000, 0xe70f0000, 0xde000000, 0x05003800, 0x01000d00, 0x07000000, 0xe80f0000, 0xe4000000, 0x05003800,
- 0x01000d00, 0x07000000, 0xe90f0000, 0xea000000, 0x05003800, 0x01000d00, 0x07000000, 0xea0f0000, 0xf0000000, 0x05003800, 0x01000d00, 0x07000000,
- 0xeb0f0000, 0xf6000000, 0x05003800, 0x01000d00, 0x07000000, 0xec0f0000, 0xf1000000, 0x02004600, 0x02000d00, 0x07000000, 0xed0f0000, 0xf4000000,
- 0x02004600, 0x02000d00, 0x07000000, 0xee0f0000, 0xd0000000, 0x03004600, 0x02000d00, 0x07000000, 0xef0f0000, 0xd4000000, 0x03004600, 0x02000d00,
- 0x07000000, 0xf00f0000, 0x00000000, 0x05004600, 0x01000d00, 0x07000000, 0xf10f0000, 0x06000000, 0x05004600, 0x01000d00, 0x07000000, 0xf20f0000,
- 0x0c000000, 0x05004600, 0x01000d00, 0x07000000, 0xf30f0000, 0x12000000, 0x05004600, 0x01000d00, 0x07000000, 0xf40f0000, 0x18000000, 0x05004600,
- 0x01000d00, 0x07000000, 0xf50f0000, 0x1e000000, 0x05004600, 0x01000d00, 0x07000000, 0xf60f0000, 0x24000000, 0x05004600, 0x01000d00, 0x07000000,
- 0xf70f0000, 0x2a000000, 0x05004600, 0x01000d00, 0x07000000, 0xf80f0000, 0x30000000, 0x05004600, 0x01000d00, 0x07000000, 0xf90f0000, 0x36000000,
- 0x05004600, 0x01000d00, 0x07000000, 0xfa0f0000, 0x3c000000, 0x05004600, 0x01000d00, 0x07000000, 0xfb0f0000, 0x42000000, 0x05004600, 0x01000d00,
- 0x07000000, 0xfc0f0000, 0x48000000, 0x05004600, 0x01000d00, 0x07000000, 0xfd0f0000, 0x4e000000, 0x05004600, 0x01000d00, 0x07000000, 0xfe0f0000,
- 0x54000000, 0x05004600, 0x01000d00, 0x07000000, 0xff0f0000, 0x5a000000, 0x05004600, 0x01000d00, 0x07000000, 0x000f0000,
-};
+static unsigned int stb_decompress_length(unsigned char *input)
+{
+ return (input[8] << 24) + (input[9] << 16) + (input[10] << 8) + input[11];
+}
+
+static unsigned char *stb__barrier;
+static unsigned char *stb__barrier2;
+static unsigned char *stb__barrier3;
+static unsigned char *stb__barrier4;
+
+static unsigned char *stb__dout;
+static void stb__match(unsigned char *data, unsigned int length)
+{
+ // INVERSE of memmove... write each byte before copying the next...
+ assert (stb__dout + length <= stb__barrier);
+ if (stb__dout + length > stb__barrier) { stb__dout += length; return; }
+ if (data < stb__barrier4) { stb__dout = stb__barrier+1; return; }
+ while (length--) *stb__dout++ = *data++;
+}
+
+static void stb__lit(unsigned char *data, unsigned int length)
+{
+ assert (stb__dout + length <= stb__barrier);
+ if (stb__dout + length > stb__barrier) { stb__dout += length; return; }
+ if (data < stb__barrier2) { stb__dout = stb__barrier+1; return; }
+ memcpy(stb__dout, data, length);
+ stb__dout += length;
+}
+
+#define stb__in2(x) ((i[x] << 8) + i[(x)+1])
+#define stb__in3(x) ((i[x] << 16) + stb__in2((x)+1))
+#define stb__in4(x) ((i[x] << 24) + stb__in3((x)+1))
+
+static unsigned char *stb_decompress_token(unsigned char *i)
+{
+ if (*i >= 0x20) { // use fewer if's for cases that expand small
+ if (*i >= 0x80) stb__match(stb__dout-i[1]-1, i[0] - 0x80 + 1), i += 2;
+ else if (*i >= 0x40) stb__match(stb__dout-(stb__in2(0) - 0x4000 + 1), i[2]+1), i += 3;
+ else /* *i >= 0x20 */ stb__lit(i+1, i[0] - 0x20 + 1), i += 1 + (i[0] - 0x20 + 1);
+ } else { // more ifs for cases that expand large, since overhead is amortized
+ if (*i >= 0x18) stb__match(stb__dout-(stb__in3(0) - 0x180000 + 1), i[3]+1), i += 4;
+ else if (*i >= 0x10) stb__match(stb__dout-(stb__in3(0) - 0x100000 + 1), stb__in2(3)+1), i += 5;
+ else if (*i >= 0x08) stb__lit(i+2, stb__in2(0) - 0x0800 + 1), i += 2 + (stb__in2(0) - 0x0800 + 1);
+ else if (*i == 0x07) stb__lit(i+3, stb__in2(1) + 1), i += 3 + (stb__in2(1) + 1);
+ else if (*i == 0x06) stb__match(stb__dout-(stb__in3(1)+1), i[4]+1), i += 5;
+ else if (*i == 0x04) stb__match(stb__dout-(stb__in3(1)+1), stb__in2(4)+1), i += 6;
+ }
+ return i;
+}
-void ImGui::GetDefaultFontData(const void** fnt_data, unsigned int* fnt_size, const void** png_data, unsigned int* png_size)
+static unsigned int stb_adler32(unsigned int adler32, unsigned char *buffer, unsigned int buflen)
{
- if (fnt_data) *fnt_data = (const void*)proggy_clean_13_fnt_data;
- if (fnt_size) *fnt_size = proggy_clean_13_fnt_size;
- if (png_data) *png_data = (const void*)proggy_clean_13_png_data;
- if (png_size) *png_size = proggy_clean_13_png_size;
+ const unsigned long ADLER_MOD = 65521;
+ unsigned long s1 = adler32 & 0xffff, s2 = adler32 >> 16;
+ unsigned long blocklen, i;
+
+ blocklen = buflen % 5552;
+ while (buflen) {
+ for (i=0; i + 7 < blocklen; i += 8) {
+ s1 += buffer[0], s2 += s1;
+ s1 += buffer[1], s2 += s1;
+ s1 += buffer[2], s2 += s1;
+ s1 += buffer[3], s2 += s1;
+ s1 += buffer[4], s2 += s1;
+ s1 += buffer[5], s2 += s1;
+ s1 += buffer[6], s2 += s1;
+ s1 += buffer[7], s2 += s1;
+
+ buffer += 8;
+ }
+
+ for (; i < blocklen; ++i)
+ s1 += *buffer++, s2 += s1;
+
+ s1 %= ADLER_MOD, s2 %= ADLER_MOD;
+ buflen -= blocklen;
+ blocklen = 5552;
+ }
+ return (s2 << 16) + s1;
}
+static unsigned int stb_decompress(unsigned char *output, unsigned char *i, unsigned int length)
+{
+ unsigned int olen;
+ if (stb__in4(0) != 0x57bC0000) return 0;
+ if (stb__in4(4) != 0) return 0; // error! stream is > 4GB
+ olen = stb_decompress_length(i);
+ stb__barrier2 = i;
+ stb__barrier3 = i+length;
+ stb__barrier = output + olen;
+ stb__barrier4 = output;
+ i += 16;
+
+ stb__dout = output;
+ while (1) {
+ unsigned char *old_i = i;
+ i = stb_decompress_token(i);
+ if (i == old_i) {
+ if (*i == 0x05 && i[1] == 0xfa) {
+ assert(stb__dout == output + olen);
+ if (stb__dout != output + olen) return 0;
+ if (stb_adler32(1, output, olen) != (unsigned int) stb__in4(2))
+ return 0;
+ return olen;
+ } else {
+ assert(0); /* NOTREACHED */
+ return 0;
+ }
+ }
+ assert(stb__dout <= output + olen);
+ if (stb__dout > output + olen)
+ return 0;
+ }
+}
+
+static const unsigned int proggy_clean_ttf_compressed_size = 9583;
+static const unsigned int proggy_clean_ttf_compressed_data[9584/4] =
+{
+ 0x0000bc57, 0x00000000, 0xf8a00000, 0x00000400, 0x00010037, 0x000c0000, 0x00030080, 0x2f534f40, 0x74eb8832, 0x01000090, 0x2c158248, 0x616d634e,
+ 0x23120270, 0x03000075, 0x241382a0, 0x74766352, 0x82178220, 0xfc042102, 0x02380482, 0x66796c67, 0x5689af12, 0x04070000, 0x80920000, 0x64616568,
+ 0xd36691d7, 0xcc201b82, 0x36210382, 0x27108268, 0xc3014208, 0x04010000, 0x243b0f82, 0x78746d68, 0x807e008a, 0x98010000, 0x06020000, 0x61636f6c,
+ 0xd8b0738c, 0x82050000, 0x0402291e, 0x7078616d, 0xda00ae01, 0x28201f82, 0x202c1082, 0x656d616e, 0x96bb5925, 0x84990000, 0x9e2c1382, 0x74736f70,
+ 0xef83aca6, 0x249b0000, 0xd22c3382, 0x70657270, 0x12010269, 0xf4040000, 0x08202f82, 0x012ecb84, 0x553c0000, 0x0f5fd5e9, 0x0300f53c, 0x00830008,
+ 0x7767b722, 0x002b3f82, 0xa692bd00, 0xfe0000d7, 0x83800380, 0x21f1826f, 0x00850002, 0x41820120, 0x40fec026, 0x80030000, 0x05821083, 0x07830120,
+ 0x0221038a, 0x24118200, 0x90000101, 0x82798200, 0x00022617, 0x00400008, 0x2009820a, 0x82098276, 0x82002006, 0x9001213b, 0x0223c883, 0x828a02bc,
+ 0x858f2010, 0xc5012507, 0x00023200, 0x04210083, 0x91058309, 0x6c412b03, 0x40007374, 0xac200000, 0x00830008, 0x01000523, 0x834d8380, 0x80032103,
+ 0x012101bf, 0x23b88280, 0x00800000, 0x0b830382, 0x07820120, 0x83800021, 0x88012001, 0x84002009, 0x2005870f, 0x870d8301, 0x2023901b, 0x83199501,
+ 0x82002015, 0x84802000, 0x84238267, 0x88002027, 0x8561882d, 0x21058211, 0x13880000, 0x01800022, 0x05850d85, 0x0f828020, 0x03208384, 0x03200582,
+ 0x47901b84, 0x1b850020, 0x1f821d82, 0x3f831d88, 0x3f410383, 0x84058405, 0x210982cd, 0x09830000, 0x03207789, 0xf38a1384, 0x01203782, 0x13872384,
+ 0x0b88c983, 0x0d898f84, 0x00202982, 0x23900383, 0x87008021, 0x83df8301, 0x86118d03, 0x863f880d, 0x8f35880f, 0x2160820f, 0x04830300, 0x1c220382,
+ 0x05820100, 0x4c000022, 0x09831182, 0x04001c24, 0x11823000, 0x0800082e, 0x00000200, 0xff007f00, 0xffffac20, 0x00220982, 0x09848100, 0xdf216682,
+ 0x843586d5, 0x06012116, 0x04400684, 0xa58120d7, 0x00b127d8, 0x01b88d01, 0x2d8685ff, 0xc100c621, 0xf4be0801, 0x9e011c01, 0x88021402, 0x1403fc02,
+ 0x9c035803, 0x1404de03, 0x50043204, 0xa2046204, 0x66051605, 0x1206bc05, 0xd6067406, 0x7e073807, 0x4e08ec07, 0x96086c08, 0x1009d008, 0x88094a09,
+ 0x800a160a, 0x560b040b, 0x2e0cc80b, 0xea0c820c, 0xa40d5e0d, 0x500eea0d, 0x280f960e, 0x1210b00f, 0xe0107410, 0xb6115211, 0x6e120412, 0x4c13c412,
+ 0xf613ac13, 0xae145814, 0x4015ea14, 0xa6158015, 0x1216b815, 0xc6167e16, 0x8e173417, 0x5618e017, 0xee18ba18, 0x96193619, 0x481ad419, 0xf01a9c1a,
+ 0xc81b5c1b, 0x4c1c041c, 0xea1c961c, 0x921d2a1d, 0x401ed21d, 0xe01e8e1e, 0x761f241f, 0xa61fa61f, 0x01821020, 0x8a202e34, 0xc820b220, 0x74211421,
+ 0xee219821, 0x86226222, 0x01820c23, 0x83238021, 0x23983c01, 0x24d823b0, 0x244a2400, 0x24902468, 0x250625ae, 0x25822560, 0x26f825f8, 0x82aa2658,
+ 0xd8be0801, 0x9a274027, 0x68280a28, 0x0e29a828, 0xb8292029, 0x362af829, 0x602a602a, 0x2a2b022b, 0xac2b5e2b, 0x202ce62b, 0x9a2c342c, 0x5c2d282d,
+ 0xaa2d782d, 0x262ee82d, 0x262fa62e, 0xf42fb62f, 0xc8305e30, 0xb4313e31, 0x9e321e32, 0x82331e33, 0x5c34ee33, 0x3a35ce34, 0xd4358635, 0x72362636,
+ 0x7637e636, 0x3a38d837, 0x1239a638, 0xae397439, 0x9a3a2e3a, 0x7c3b063b, 0x3a3ce83b, 0x223d963c, 0xec3d863d, 0xc63e563e, 0x9a3f2a3f, 0x6a401240,
+ 0x3641d040, 0x0842a241, 0x7a424042, 0xf042b842, 0xcc436243, 0x8a442a44, 0x5845ee44, 0xe245b645, 0xb4465446, 0x7a471447, 0x5448da47, 0x4049c648,
+ 0x15462400, 0x034d0808, 0x0b000700, 0x13000f00, 0x1b001700, 0x23001f00, 0x2b002700, 0x33002f00, 0x3b003700, 0x43003f00, 0x4b004700, 0x53004f00,
+ 0x5b005700, 0x63005f00, 0x6b006700, 0x73006f00, 0x7b007700, 0x83007f00, 0x8b008700, 0x00008f00, 0x15333511, 0x20039631, 0x20178205, 0xd3038221,
+ 0x20739707, 0x25008580, 0x028080fc, 0x05be8080, 0x04204a85, 0x05ce0685, 0x0107002a, 0x02000080, 0x00000400, 0x250d8b41, 0x33350100, 0x03920715,
+ 0x13820320, 0x858d0120, 0x0e8d0320, 0xff260d83, 0x00808000, 0x54820106, 0x04800223, 0x845b8c80, 0x41332059, 0x078b068f, 0x82000121, 0x82fe2039,
+ 0x84802003, 0x83042004, 0x23598a0e, 0x00180000, 0x03210082, 0x42ab9080, 0x73942137, 0x2013bb41, 0x8f978205, 0x2027a39b, 0x20b68801, 0x84b286fd,
+ 0x91c88407, 0x41032011, 0x11a51130, 0x15000027, 0x80ff8000, 0x11af4103, 0x841b0341, 0x8bd983fd, 0x9be99bc9, 0x8343831b, 0x21f1821f, 0xb58300ff,
+ 0x0f84e889, 0xf78a0484, 0x8000ff22, 0x0020eeb3, 0x14200082, 0x2130ef41, 0xeb431300, 0x4133200a, 0xd7410ecb, 0x9a07200b, 0x2027871b, 0x21238221,
+ 0xe7828080, 0xe784fd20, 0xe8848020, 0xfe808022, 0x08880d85, 0xba41fd20, 0x82248205, 0x85eab02a, 0x008022e7, 0x2cd74200, 0x44010021, 0xd34406eb,
+ 0x44312013, 0xcf8b0eef, 0x0d422f8b, 0x82332007, 0x0001212f, 0x8023cf82, 0x83000180, 0x820583de, 0x830682d4, 0x820020d4, 0x82dc850a, 0x20e282e9,
+ 0xb2ff85fe, 0x010327e9, 0x02000380, 0x0f440400, 0x0c634407, 0x68825982, 0x85048021, 0x260a825d, 0x010b0000, 0x4400ff00, 0x2746103f, 0x08d74209,
+ 0x4d440720, 0x0eaf4406, 0xc3441d20, 0x23078406, 0xff800002, 0x04845b83, 0x8d05b241, 0x1781436f, 0x6b8c87a5, 0x1521878e, 0x06474505, 0x01210783,
+ 0x84688c00, 0x8904828e, 0x441e8cf7, 0x0b270cff, 0x80008000, 0x45030003, 0xfb430fab, 0x080f4107, 0x410bf942, 0xd34307e5, 0x070d4207, 0x80800123,
+ 0x205d85fe, 0x849183fe, 0x20128404, 0x82809702, 0x00002217, 0x41839a09, 0x6b4408cf, 0x0733440f, 0x3b460720, 0x82798707, 0x97802052, 0x0000296f,
+ 0xff800004, 0x01800100, 0x0021ef89, 0x0a914625, 0x410a4d41, 0x00250ed4, 0x00050000, 0x056d4280, 0x210a7b46, 0x21481300, 0x46ed8512, 0x00210bd1,
+ 0x89718202, 0x21738877, 0x2b850001, 0x00220582, 0x87450a00, 0x0ddb4606, 0x41079b42, 0x9d420c09, 0x0b09420b, 0x8d820720, 0x9742fc84, 0x42098909,
+ 0x00241e0f, 0x00800014, 0x0b47da82, 0x0833442a, 0x49078d41, 0x2f450f13, 0x42278f17, 0x01200751, 0x22063742, 0x44808001, 0x20450519, 0x88068906,
+ 0x83fe2019, 0x4203202a, 0x1a941a58, 0x00820020, 0xe7a40e20, 0x420ce146, 0x854307e9, 0x0fcb4713, 0xff20a182, 0xfe209b82, 0x0c867f8b, 0x0021aea4,
+ 0x219fa40f, 0x7d41003b, 0x07194214, 0xbf440520, 0x071d4206, 0x6941a590, 0x80802309, 0x028900ff, 0xa9a4b685, 0xc5808021, 0x449b82ab, 0x152007eb,
+ 0x42134d46, 0x61440a15, 0x051e4208, 0x222b0442, 0x47001100, 0xfd412913, 0x17194714, 0x410f5b41, 0x02220773, 0x09428080, 0x21a98208, 0xd4420001,
+ 0x481c840d, 0x00232bc9, 0x42120000, 0xe74c261b, 0x149d4405, 0x07209d87, 0x410db944, 0x14421c81, 0x42fd2005, 0x80410bd2, 0x203d8531, 0x06874100,
+ 0x48256f4a, 0xcb420c95, 0x13934113, 0x44075d44, 0x044c0855, 0x00ff2105, 0xfe228185, 0x45448000, 0x22c5b508, 0x410c0000, 0x7b412087, 0x1bb74514,
+ 0x32429c85, 0x0a574805, 0x21208943, 0x8ba01300, 0x440dfb4e, 0x77431437, 0x245b4113, 0x200fb145, 0x41108ffe, 0x80203562, 0x00200082, 0x46362b42,
+ 0x1742178d, 0x4527830f, 0x0f830b2f, 0x4a138146, 0x802409a1, 0xfe8000ff, 0x94419982, 0x09294320, 0x04000022, 0x49050f4f, 0xcb470a63, 0x48032008,
+ 0x2b48067b, 0x85022008, 0x82638338, 0x00002209, 0x05af4806, 0x900e9f49, 0x84c5873f, 0x214285bd, 0x064900ff, 0x0c894607, 0x00000023, 0x4903820a,
+ 0x714319f3, 0x0749410c, 0x8a07a145, 0x02152507, 0xfe808000, 0x74490386, 0x8080211b, 0x0c276f82, 0x00018000, 0x48028003, 0x2b2315db, 0x43002f00,
+ 0x6f82142f, 0x44011521, 0x93510da7, 0x20e68508, 0x06494d80, 0x8e838020, 0x06821286, 0x124bff20, 0x25f3830c, 0x03800080, 0xe74a0380, 0x207b8715,
+ 0x876b861d, 0x4a152007, 0x07870775, 0xf6876086, 0x8417674a, 0x0a0021f2, 0x431c9743, 0x8d421485, 0x200b830b, 0x06474d03, 0x71828020, 0x04510120,
+ 0x42da8606, 0x1f831882, 0x001a0022, 0xff4d0082, 0x0b0f532c, 0x0d449b94, 0x4e312007, 0x074f12e7, 0x0bf3490b, 0xbb412120, 0x413f820a, 0xef490857,
+ 0x80002313, 0xe2830001, 0x6441fc20, 0x8b802006, 0x00012108, 0xfd201582, 0x492c9b48, 0x802014ff, 0x51084347, 0x0f4327f3, 0x17bf4a14, 0x201b7944,
+ 0x06964201, 0x134ffe20, 0x20d6830b, 0x25d78280, 0xfd800002, 0x05888000, 0x9318dc41, 0x21d282d4, 0xdb481800, 0x0dff542a, 0x45107743, 0xe14813f5,
+ 0x0f034113, 0x83135d45, 0x47b28437, 0xe4510e73, 0x21f58e06, 0x2b8400fd, 0x1041fcac, 0x08db4b0b, 0x421fdb41, 0xdf4b18df, 0x011d210a, 0x420af350,
+ 0x6e8308af, 0xac85cb86, 0x1e461082, 0x82b7a407, 0x411420a3, 0xa34130ab, 0x178f4124, 0x41139741, 0x86410d93, 0x82118511, 0x057243d8, 0x8941d9a4,
+ 0x3093480c, 0x4a13474f, 0xfb5016a9, 0x07ad4108, 0x4a0f9d42, 0xfe200fad, 0x4708aa41, 0x83482dba, 0x288f4d06, 0xb398c3bb, 0x44267b41, 0xb34439d7,
+ 0x0755410f, 0x200ebb45, 0x0f5f4215, 0x20191343, 0x06df5301, 0xf04c0220, 0x2ba64d07, 0x82050841, 0x430020ce, 0xa78f3627, 0x5213ff42, 0x2f970bc1,
+ 0x4305ab55, 0xa084111b, 0x450bac45, 0x5f4238b8, 0x010c2106, 0x0220ed82, 0x441bb344, 0x875010af, 0x0737480f, 0x490c5747, 0x0c840c03, 0x4c204b42,
+ 0x8ba905d7, 0x8b948793, 0x510c0c51, 0xfb4b24b9, 0x1b174107, 0x5709d74c, 0xd1410ca5, 0x079d480f, 0x201ff541, 0x06804780, 0x7d520120, 0x80002205,
+ 0x20a983fe, 0x47bb83fe, 0x1b8409b4, 0x81580220, 0x4e00202c, 0x4f41282f, 0x0eab4f17, 0x57471520, 0x0e0f4808, 0x8221e041, 0x3e1b4a8b, 0x4407175d,
+ 0x1b4b071f, 0x4a0f8b07, 0x174a0703, 0x0ba5411b, 0x430fb141, 0x0120057b, 0xfc20dd82, 0x4a056047, 0xf4850c0c, 0x01221982, 0x02828000, 0x1a5d088b,
+ 0x20094108, 0x8c0e3941, 0x4900200e, 0x7744434f, 0x200b870b, 0x0e4b5a33, 0x2b41f78b, 0x8b138307, 0x0b9f450b, 0x2406f741, 0xfd808001, 0x09475a00,
+ 0x84000121, 0x5980200e, 0x85450e5d, 0x832c8206, 0x4106831e, 0x00213814, 0x28b34810, 0x410c2f4b, 0x5f4a13d7, 0x0b2b4113, 0x6e43a883, 0x11174b05,
+ 0x4b066a45, 0xcc470541, 0x5000202b, 0xcb472f4b, 0x44b59f0f, 0xc5430b5b, 0x0d654907, 0x21065544, 0xd6828080, 0xfe201982, 0x8230ec4a, 0x120025c2,
+ 0x80ff8000, 0x4128d74d, 0x3320408b, 0x410a9f50, 0xdb822793, 0x822bd454, 0x61134b2e, 0x410b214a, 0xad4117c9, 0x0001211f, 0x4206854f, 0x4b430596,
+ 0x06bb5530, 0x2025cf46, 0x0ddd5747, 0x500ea349, 0x0f840fa7, 0x5213c153, 0x634e08d1, 0x0bbe4809, 0x59316e4d, 0x5b50053f, 0x203f6323, 0x5117eb46,
+ 0x94450a63, 0x246e410a, 0x63410020, 0x0bdb5f2f, 0x4233ab44, 0x39480757, 0x112d4a07, 0x7241118f, 0x000e2132, 0x9f286f41, 0x0f8762c3, 0x33350723,
+ 0x094e6415, 0x2010925f, 0x067252fe, 0xd0438020, 0x63a68225, 0x11203a4f, 0x480e6360, 0x5748131f, 0x079b521f, 0x200e2f43, 0x864b8315, 0x113348e7,
+ 0x85084e48, 0x06855008, 0x5880fd21, 0x7c420925, 0x0c414824, 0x37470c86, 0x1b8b422b, 0x5b0a8755, 0x23410c21, 0x0b83420b, 0x5a082047, 0xf482067f,
+ 0xa80b4c47, 0x0c0021cf, 0x20207b42, 0x0fb74100, 0x420b8744, 0xeb43076f, 0x0f6f420b, 0x4261fe20, 0x439aa00c, 0x215034e3, 0x0ff9570f, 0x4b1f2d5d,
+ 0x2d5d0c6f, 0x09634d0b, 0x1f51b8a0, 0x620f200c, 0xaf681e87, 0x24f94d07, 0x4e0f4945, 0xfe200c05, 0x22139742, 0x57048080, 0x23950c20, 0x97601585,
+ 0x4813201f, 0xad620523, 0x200f8f0f, 0x9e638f15, 0x00002181, 0x41342341, 0x0f930f0b, 0x210b4b62, 0x978f0001, 0xfe200f84, 0x8425c863, 0x2704822b,
+ 0x80000a00, 0x00038001, 0x610e9768, 0x834514bb, 0x0bc3430f, 0x2107e357, 0x80848080, 0x4400fe21, 0x2e410983, 0x00002a1a, 0x00000700, 0x800380ff,
+ 0x0fdf5800, 0x59150021, 0xd142163d, 0x0c02410c, 0x01020025, 0x65800300, 0x00240853, 0x1d333501, 0x15220382, 0x35420001, 0x44002008, 0x376406d7,
+ 0x096f6b19, 0x480bc142, 0x8f4908a7, 0x211f8b1f, 0x9e830001, 0x0584fe20, 0x4180fd21, 0x11850910, 0x8d198259, 0x000021d4, 0x5a08275d, 0x275d1983,
+ 0x06d9420e, 0x9f08b36a, 0x0f7d47b5, 0x8d8a2f8b, 0x4c0e0b57, 0xe7410e17, 0x42d18c1a, 0xb351087a, 0x1ac36505, 0x4b4a2f20, 0x0b9f450d, 0x430beb53,
+ 0xa7881015, 0xa5826a83, 0x80200f82, 0x86185a65, 0x4100208e, 0x176c3367, 0x0fe7650b, 0x4a17ad4b, 0x0f4217ed, 0x112e4206, 0x41113a42, 0xf7423169,
+ 0x0cb34737, 0x560f8b46, 0xa75407e5, 0x5f01200f, 0x31590c48, 0x80802106, 0x42268841, 0x0020091e, 0x4207ef64, 0x69461df7, 0x138d4114, 0x820f5145,
+ 0x53802090, 0xff200529, 0xb944b183, 0x417e8505, 0x00202561, 0x15210082, 0x42378200, 0x9b431cc3, 0x004f220d, 0x0dd54253, 0x4213f149, 0x7d41133b,
+ 0x42c9870b, 0x802010f9, 0x420b2c42, 0x8f441138, 0x267c4408, 0x600cb743, 0x8f4109d3, 0x05ab701d, 0x83440020, 0x3521223f, 0x0b794733, 0xfb62fe20,
+ 0x4afd2010, 0xaf410ae7, 0x25ce8525, 0x01080000, 0x7b6b0000, 0x0973710b, 0x82010021, 0x49038375, 0x33420767, 0x052c4212, 0x58464b85, 0x41fe2005,
+ 0x50440c27, 0x000c2209, 0x1cb36b80, 0x9b06df44, 0x0f93566f, 0x52830220, 0xfe216e8d, 0x200f8200, 0x0fb86704, 0xb057238d, 0x050b5305, 0x7217eb47,
+ 0xbd410b6b, 0x0f214610, 0x871f9956, 0x1e91567e, 0x2029b741, 0x20008200, 0x18b7410a, 0x27002322, 0x41095543, 0x0f8f0fb3, 0x41000121, 0x889d111c,
+ 0x14207b82, 0x00200382, 0x73188761, 0x475013a7, 0x6e33200c, 0x234e0ea3, 0x9b138313, 0x08e54d17, 0x9711094e, 0x2ee74311, 0x4908875e, 0xd75d1f1f,
+ 0x19ab5238, 0xa2084d48, 0x63a7a9b3, 0x55450b83, 0x0fd74213, 0x440d814c, 0x4f481673, 0x05714323, 0x13000022, 0x412e1f46, 0xdf493459, 0x21c7550f,
+ 0x8408215f, 0x201d49cb, 0xb1103043, 0x0f0d65d7, 0x452b8d41, 0x594b0f8d, 0x0b004605, 0xb215eb46, 0x000a24d7, 0x47000080, 0x002118cf, 0x06436413,
+ 0x420bd750, 0x2b500743, 0x076a470c, 0x4105c050, 0xd942053f, 0x0d00211a, 0x5f44779c, 0x0ce94805, 0x51558186, 0x14a54c0b, 0x49082b41, 0x0a4b0888,
+ 0x8080261f, 0x0d000000, 0x20048201, 0x1deb6a03, 0x420cb372, 0x07201783, 0x4306854d, 0x8b830c59, 0x59093c74, 0x0020250f, 0x67070f4a, 0x2341160b,
+ 0x00372105, 0x431c515d, 0x554e17ef, 0x0e5d6b05, 0x41115442, 0xb74a1ac1, 0x2243420a, 0x5b4f878f, 0x7507200f, 0x384b086f, 0x09d45409, 0x0020869a,
+ 0x12200082, 0xab460382, 0x10075329, 0x54138346, 0xaf540fbf, 0x1ea75413, 0x9a0c9e54, 0x0f6b44c1, 0x41000021, 0x47412a4f, 0x07374907, 0x5310bf76,
+ 0xff2009b4, 0x9a09a64c, 0x8200208d, 0x34c34500, 0x970fe141, 0x1fd74b0f, 0x440a3850, 0x206411f0, 0x27934609, 0x470c5d41, 0x555c2947, 0x1787540f,
+ 0x6e0f234e, 0x7d540a1b, 0x1d736b08, 0x0026a088, 0x80000e00, 0x9b5200ff, 0x08ef4318, 0x450bff77, 0x1d4d0b83, 0x081f7006, 0xcb691b86, 0x4b022008,
+ 0xc34b0b33, 0x1d0d4a0c, 0x8025a188, 0x0b000000, 0x52a38201, 0xbf7d0873, 0x0c234511, 0x8f0f894a, 0x4101200f, 0x0c880c9d, 0x2b418ea1, 0x06c74128,
+ 0x66181341, 0x7b4c0bb9, 0x0c06630b, 0xfe200c87, 0x9ba10882, 0x27091765, 0x01000008, 0x02800380, 0x48113f4e, 0x29430cf5, 0x09a75a0b, 0x31618020,
+ 0x6d802009, 0x61840e33, 0x8208bf51, 0x0c637d61, 0x7f092379, 0x4f470f4b, 0x1797510c, 0x46076157, 0xf5500fdf, 0x0f616910, 0x1171fe20, 0x82802006,
+ 0x08696908, 0x41127a4c, 0x3f4a15f3, 0x01042607, 0x0200ff00, 0x1cf77700, 0xff204185, 0x00235b8d, 0x43100000, 0x3b22243f, 0x3b4d3f00, 0x0b937709,
+ 0xad42f18f, 0x0b1f420f, 0x51084b43, 0x8020104a, 0xb557ff83, 0x052b7f2a, 0x0280ff22, 0x250beb78, 0x00170013, 0xbf6d2500, 0x07db760e, 0x410e2b7f,
+ 0x00230e4f, 0x49030000, 0x0582055b, 0x07000326, 0x00000b00, 0x580bcd46, 0x00200cdd, 0x57078749, 0x8749160f, 0x0f994f0a, 0x41134761, 0x01200b31,
+ 0xeb796883, 0x0b41500b, 0x0e90b38e, 0x202e7b51, 0x05d95801, 0x41080570, 0x1d530fc9, 0x0b937a0f, 0xaf8eb387, 0xf743b98f, 0x07c74227, 0x80000523,
+ 0x0fcb4503, 0x430ca37b, 0x7782077f, 0x8d0a9947, 0x08af4666, 0xeb798020, 0x6459881e, 0xc3740bbf, 0x0feb6f0b, 0x20072748, 0x052b6102, 0x435e0584,
+ 0x7d088308, 0x03200afd, 0x92109e41, 0x28aa8210, 0x80001500, 0x80030000, 0x0fdb5805, 0x209f4018, 0xa7418d87, 0x0aa3440f, 0x20314961, 0x073a52ff,
+ 0x6108505d, 0x43181051, 0x00223457, 0xe7820500, 0x50028021, 0x81410d33, 0x063d7108, 0xdb41af84, 0x4d888205, 0x00201198, 0x463d835f, 0x152106d7,
+ 0x0a355a33, 0x6917614e, 0x75411f4d, 0x184b8b07, 0x1809c344, 0x21091640, 0x0b828000, 0x42808021, 0x26790519, 0x86058605, 0x2428422d, 0x22123b42,
+ 0x42000080, 0xf587513b, 0x7813677b, 0xaf4d139f, 0x00ff210c, 0x5e0a1d57, 0x3b421546, 0x01032736, 0x02000380, 0x41180480, 0x2f420f07, 0x0c624807,
+ 0x00000025, 0x18000103, 0x83153741, 0x430120c3, 0x042106b2, 0x088d4d00, 0x2f830620, 0x1810434a, 0x18140345, 0x8507fb41, 0x5ee582ea, 0x0023116c,
+ 0x8d000600, 0x053b56af, 0xa6554fa2, 0x0d704608, 0x40180d20, 0x47181a43, 0xd37b07ff, 0x0b79500c, 0x420fd745, 0x47450bd9, 0x8471830a, 0x095a777e,
+ 0x84137542, 0x82002013, 0x2f401800, 0x0007213b, 0x4405e349, 0x0d550ff3, 0x16254c0c, 0x820ffe4a, 0x0400218a, 0x89066f41, 0x106b414f, 0xc84d0120,
+ 0x80802206, 0x0c9a4b03, 0x00100025, 0x68000200, 0x9d8c2473, 0x44134344, 0xf36a0f33, 0x4678860f, 0x1b440a25, 0x41988c0a, 0x80201879, 0x43079b5e,
+ 0x4a18080b, 0x0341190b, 0x1259530c, 0x43251552, 0x908205c8, 0x0cac4018, 0x86000421, 0x0e504aa2, 0x0020b891, 0xfb450082, 0x51132014, 0x8f5205f3,
+ 0x35052108, 0x8505cb59, 0x0f6d4f70, 0x82150021, 0x29af5047, 0x4f004b24, 0x75795300, 0x1b595709, 0x460b6742, 0xbf4b0f0d, 0x5743870b, 0xcb6d1461,
+ 0x08f64505, 0x4e05ab6c, 0x334126c3, 0x0bcb6b0d, 0x1811034d, 0x4111ef4b, 0x814f1ce5, 0x20af8227, 0x07fd7b80, 0x41188e84, 0xef410f33, 0x80802429,
+ 0x410d0000, 0xa34205ab, 0x76b7881c, 0xff500b89, 0x0741430f, 0x20086f4a, 0x209d8200, 0x234c18fd, 0x05d4670a, 0x4509af51, 0x9642078d, 0x189e831d,
+ 0x7c1cc74b, 0xcd4c07b9, 0x0e7c440f, 0x8b7b0320, 0x21108210, 0xc76c8080, 0x03002106, 0x6b23bf41, 0xc549060b, 0x7946180b, 0x0ff7530f, 0x17ad4618,
+ 0x200ecd45, 0x208c83fd, 0x5e0488fe, 0x032009c6, 0x420d044e, 0x0d8f0d7f, 0x00820020, 0x18001021, 0x6d273b45, 0xfd4c0c93, 0xcf451813, 0x0fe5450f,
+ 0x5a47c382, 0x820a8b0a, 0x282b4998, 0x410a8b5b, 0x4b232583, 0x54004f00, 0x978f0ce3, 0x500f1944, 0xa95f1709, 0x0280220b, 0x05ba7080, 0xa1530682,
+ 0x06324c13, 0x91412582, 0x05536e2c, 0x63431020, 0x0f434706, 0x8c11374c, 0x176143d7, 0x4d0f454c, 0xd3680bed, 0x0bee4d17, 0x212b9a41, 0x0f530a00,
+ 0x140d531c, 0x43139143, 0x95610e8d, 0x0f094415, 0x4205fb56, 0x1b4205cf, 0x17015225, 0x5e0c477f, 0xaf6e0aeb, 0x0ff36218, 0x04849a84, 0x0a454218,
+ 0x9c430420, 0x23c6822b, 0x04000102, 0x45091b4b, 0xf05f0955, 0x82802007, 0x421c2023, 0x5218282b, 0x7b53173f, 0x0fe7480c, 0x74173b7f, 0x47751317,
+ 0x634d1807, 0x0f6f430f, 0x24086547, 0xfc808002, 0x0b3c7f80, 0x10840120, 0x188d1282, 0x20096b43, 0x0fc24403, 0x00260faf, 0x0180000b, 0x3f500280,
+ 0x18002019, 0x450b4941, 0xf3530fb9, 0x18002010, 0x8208a551, 0x06234d56, 0xcb58a39b, 0xc3421805, 0x1313461e, 0x0f855018, 0xd34b0120, 0x6cfe2008,
+ 0x574f0885, 0x09204114, 0x07000029, 0x00008000, 0x44028002, 0x01420f57, 0x10c95c10, 0x11184c18, 0x80221185, 0x7f421e00, 0x00732240, 0x09cd4977,
+ 0x6d0b2b42, 0x4f180f8f, 0x8f5a0bcb, 0x9b0f830f, 0x0fb9411f, 0x230b5756, 0x00fd8080, 0x82060745, 0x000121d5, 0x8e0fb277, 0x4a8d4211, 0x24061c53,
+ 0x04000007, 0x12275280, 0x430c954c, 0x80201545, 0x200f764f, 0x20008200, 0x20ce8308, 0x09534f02, 0x660edf64, 0x73731771, 0xe7411807, 0x20a2820c,
+ 0x13b64404, 0x8f5d6682, 0x1d6b4508, 0x0cff4d18, 0x3348c58f, 0x0fc34c07, 0x31558b84, 0x8398820f, 0x17514712, 0x240b0e46, 0x80000a00, 0x093b4502,
+ 0x420f9759, 0xa54c0bf1, 0x0f2b470c, 0x410d314b, 0x2584170c, 0x73b30020, 0xb55fe782, 0x204d8410, 0x08e043fe, 0x4f147e41, 0x022008ab, 0x4b055159,
+ 0x2950068f, 0x00022208, 0x48511880, 0x82002009, 0x00112300, 0x634dff00, 0x24415f27, 0x180f6d43, 0x4d0b5d45, 0x4d5f05ef, 0x01802317, 0x56188000,
+ 0xa7840807, 0xc6450220, 0x21ca8229, 0x4b781a00, 0x3359182c, 0x0cf3470f, 0x180bef46, 0x420b0354, 0xff470b07, 0x4515200a, 0x9758239b, 0x4a80200c,
+ 0xd2410a26, 0x05fb4a08, 0x4b05e241, 0x03200dc9, 0x92290941, 0x00002829, 0x00010900, 0x5b020001, 0x23201363, 0x460d776a, 0xef530fdb, 0x209a890c,
+ 0x13fc4302, 0x00008024, 0xc4820104, 0x08820220, 0x20086b5b, 0x18518700, 0x8408d349, 0x0da449a1, 0x00080024, 0x7b690280, 0x4c438b1a, 0x01220f63,
+ 0x4c878000, 0x5c149c53, 0xfb430868, 0x2f56181e, 0x0ccf7b1b, 0x0f075618, 0x2008e347, 0x14144104, 0x00207f83, 0x00207b82, 0x201adf47, 0x16c35a13,
+ 0x540fdf47, 0x802006c8, 0x5418f185, 0x29430995, 0x00002419, 0x58001600, 0x5720316f, 0x4d051542, 0x4b7b1b03, 0x138f4707, 0xb747b787, 0x4aab8213,
+ 0x058305fc, 0x20115759, 0x82128401, 0x0a0b44e8, 0x46800121, 0xe64210d0, 0x82129312, 0x4bffdffe, 0x3b41171b, 0x9b27870f, 0x808022ff, 0x085c68fe,
+ 0x41800021, 0x01410b20, 0x001a213a, 0x47480082, 0x11374e12, 0x56130b4c, 0xdf4b0c65, 0x0b0f590b, 0x0f574c18, 0x830feb4b, 0x075f480f, 0x480b4755,
+ 0x40490b73, 0x80012206, 0x09d74280, 0x80fe8022, 0x80210e86, 0x056643ff, 0x10820020, 0x420b2646, 0x0b58391a, 0xd74c1808, 0x078b4e22, 0x2007f55f,
+ 0x4b491807, 0x83802017, 0x65aa82a7, 0x3152099e, 0x068b7616, 0x9b431220, 0x09bb742c, 0x500e376c, 0x8342179b, 0x0a4d5d0f, 0x8020a883, 0x180cd349,
+ 0x2016bb4b, 0x14476004, 0x84136c43, 0x08cf7813, 0x4f4c0520, 0x156f420f, 0x20085f42, 0x6fd3be03, 0xd4d30803, 0xa7411420, 0x004b222c, 0x0d3b614f,
+ 0x3f702120, 0x1393410a, 0x8f132745, 0x47421827, 0x41e08209, 0xb05e2bb9, 0x18b7410c, 0x18082647, 0x4107a748, 0xeb8826bf, 0x0ca76018, 0x733ecb41,
+ 0xd0410d83, 0x43ebaf2a, 0x0420067f, 0x721dab4c, 0x472005bb, 0x4105d341, 0x334844cb, 0x20dba408, 0x47d6ac00, 0x034e3aef, 0x0f8f421b, 0x930f134d,
+ 0x3521231f, 0xb7421533, 0x42f5ad0a, 0x1e961eaa, 0x17000022, 0x4c367b50, 0x7d491001, 0x0bf5520f, 0x4c18fda7, 0xb8460c55, 0x83fe2005, 0x00fe25b9,
+ 0x80000180, 0x9e751085, 0x261b5c12, 0x82110341, 0x001123fb, 0x4518fe80, 0xf38c2753, 0x6d134979, 0x295107a7, 0xaf5f180f, 0x0fe3660c, 0x180b6079,
+ 0x2007bd5f, 0x9aab9103, 0x2f4d1811, 0x05002109, 0x44254746, 0x1d200787, 0x450bab75, 0x4f180f57, 0x4f181361, 0x3b831795, 0xeb4b0120, 0x0b734805,
+ 0x84078f48, 0x2e1b47bc, 0x00203383, 0xaf065f45, 0x831520d7, 0x130f51a7, 0x1797bf97, 0x2b47d783, 0x18fe2005, 0x4a18a44f, 0xa64d086d, 0x1ab0410d,
+ 0x6205a258, 0xdbab069f, 0x4f06f778, 0xa963081d, 0x133b670a, 0x8323d141, 0x13195b23, 0x530f5e70, 0xe5ad0824, 0x58001421, 0x1f472b4b, 0x47bf410c,
+ 0x82000121, 0x83fe20cb, 0x07424404, 0x68068243, 0xd7ad0d3d, 0x00010d26, 0x80020000, 0x4a1c6f43, 0x23681081, 0x10a14f13, 0x8a070e57, 0x430a848f,
+ 0x7372243e, 0x4397a205, 0xb56c1021, 0x43978f0f, 0x64180505, 0x99aa0ff2, 0x0e000022, 0x20223341, 0x094b4f37, 0x074a3320, 0x2639410a, 0xfe208e84,
+ 0x8b0e0048, 0x508020a3, 0x9e4308fe, 0x073f4115, 0xe3480420, 0x0c9b5f1b, 0x7c137743, 0x9a95185b, 0x6122b148, 0x979b08df, 0x0fe36c18, 0x48109358,
+ 0x23441375, 0x0ffd5c0b, 0x180fc746, 0x2011d157, 0x07e95702, 0x58180120, 0x18770ac3, 0x51032008, 0x7d4118e3, 0x80802315, 0x3b4c1900, 0xbb5a1830,
+ 0x0ceb6109, 0x5b0b3d42, 0x4f181369, 0x4f180b8d, 0x4f180f75, 0x355a1b81, 0x200d820d, 0x18e483fd, 0x4528854f, 0x89420846, 0x1321411f, 0x44086b60,
+ 0x07421d77, 0x107d4405, 0x4113fd41, 0x5a181bf1, 0x4f180db3, 0x8021128f, 0x20f68280, 0x44a882fe, 0x334d249a, 0x052f6109, 0x1520c3a7, 0xef4eb783,
+ 0x4ec39b1b, 0xc4c90ee7, 0x20060b4d, 0x256f4905, 0x4d0cf761, 0xcf9b1f13, 0xa213d74e, 0x0e1145d4, 0x50135b42, 0xcb4e398f, 0x20d79f27, 0x08865d80,
+ 0x186d5018, 0xa90f7142, 0x067342d7, 0x3f450420, 0x65002021, 0xe3560771, 0x24d38f23, 0x15333531, 0x0eb94d01, 0x451c9f41, 0x384322fb, 0x00092108,
+ 0x19af6b18, 0x6e0c6f5a, 0xbd770bfb, 0x22bb7718, 0x20090f57, 0x25e74204, 0x4207275a, 0xdb5408ef, 0x1769450f, 0x1b1b5518, 0x210b1f57, 0x5e4c8001,
+ 0x55012006, 0x802107f1, 0x0a306a80, 0x45808021, 0x0d850b88, 0x31744f18, 0x1808ec54, 0x2009575b, 0x45ffa505, 0x1b420c73, 0x180f9f0f, 0x4a0cf748,
+ 0x501805b2, 0x00210f40, 0x4d118f80, 0xd6823359, 0x072b5118, 0x314ad7aa, 0x8fc79f08, 0x45d78b1f, 0xfe20058f, 0x23325118, 0x7b54d9b5, 0x9fc38f46,
+ 0x10bb410f, 0x41077b42, 0xc1410faf, 0x27cf441d, 0x46051b4f, 0x04200683, 0x2121d344, 0x8f530043, 0x8fcf9f0e, 0x21df8c1f, 0x50188000, 0x5d180e52,
+ 0xfd201710, 0x4405c341, 0xd68528e3, 0x20071f6b, 0x1b734305, 0x6b080957, 0x7d422b1f, 0x67002006, 0x7f8317b1, 0x2024cb48, 0x08676e00, 0x8749a39b,
+ 0x18132006, 0x410a6370, 0x8f490b47, 0x7e1f8f13, 0x551805c3, 0x4c180915, 0xfe200e2f, 0x244d5d18, 0x270bcf44, 0xff000019, 0x04800380, 0x5f253342,
+ 0xff520df7, 0x13274c18, 0x5542dd93, 0x0776181b, 0xf94a1808, 0x084a4c0c, 0x4308ea5b, 0xde831150, 0x7900fd21, 0x00492c1e, 0x060f4510, 0x17410020,
+ 0x0ce74526, 0x6206b341, 0x1f561083, 0x9d6c181b, 0x08a0500e, 0x112e4118, 0x60000421, 0xbf901202, 0x4408e241, 0xc7ab0513, 0xb40f0950, 0x055943c7,
+ 0x4f18ff20, 0xc9ae1cad, 0x32b34f18, 0x7a180120, 0x3d520a05, 0x53d1b40a, 0x80200813, 0x1b815018, 0x832bf86f, 0x67731847, 0x297f4308, 0x6418d54e,
+ 0x734213f7, 0x056b4b27, 0xdba5fe20, 0x1828aa4e, 0x2031a370, 0x06cb6101, 0x2040ad41, 0x07365300, 0x2558d985, 0x83fe200c, 0x0380211c, 0x542c4743,
+ 0x052006b7, 0x6021df45, 0x897b0707, 0x18d3c010, 0x20090e70, 0x1d5843ff, 0x540a0e44, 0x002126c5, 0x322f7416, 0x636a5720, 0x0f317409, 0x610fe159,
+ 0x294617e7, 0x08555213, 0x2006a75d, 0x6cec84fd, 0xfb5907be, 0x3a317405, 0x83808021, 0x180f20ea, 0x4626434a, 0x531818e3, 0xdb59172d, 0x0cbb460c,
+ 0x2013d859, 0x18b94502, 0x8f46188d, 0x77521842, 0x0a184e38, 0x9585fd20, 0x6a180684, 0xc64507e9, 0x51cbb230, 0xd3440cf3, 0x17ff6a0f, 0x450f5b42,
+ 0x276407c1, 0x4853180a, 0x21ccb010, 0xcf580013, 0x0c15442d, 0x410a1144, 0x1144359d, 0x5cfe2006, 0xa1410a43, 0x2bb64519, 0x2f5b7618, 0xb512b745,
+ 0x0cfd6fd1, 0x42089f59, 0xb8450c70, 0x0000232d, 0x50180900, 0xb9491ae3, 0x0fc37610, 0x01210f83, 0x0f3b4100, 0xa01b2742, 0x0ccd426f, 0x6e8f6f94,
+ 0x9c808021, 0xc7511870, 0x17c74b08, 0x9b147542, 0x44fe2079, 0xd5480c7e, 0x95ef861d, 0x101b597b, 0xf5417594, 0x9f471808, 0x86868d0e, 0x3733491c,
+ 0x690f4d6d, 0x43440b83, 0x1ba94c0b, 0x660cd16b, 0x802008ae, 0x74126448, 0xcb4f38a3, 0x2cb74b0b, 0x47137755, 0xe3971777, 0x1b5d0120, 0x057a4108,
+ 0x6e08664d, 0x17421478, 0x11af4208, 0x850c3f42, 0x08234f0c, 0x4321eb4a, 0xf3451095, 0x0f394e0f, 0x4310eb45, 0xc09707b1, 0x54431782, 0xaec08d1d,
+ 0x0f434dbb, 0x9f0c0b45, 0x0a3b4dbb, 0x4618bdc7, 0x536032eb, 0x17354213, 0x4d134169, 0xc7a30c2f, 0x4e254342, 0x174332cf, 0x43cdae17, 0x6b4706e4,
+ 0x0e16430d, 0x530b5542, 0x2f7c26bb, 0x13075f31, 0x43175342, 0x60181317, 0x6550114e, 0x28624710, 0x58070021, 0x59181683, 0x2d540cf5, 0x05d5660c,
+ 0x20090c7b, 0x0e157e02, 0x8000ff2b, 0x14000080, 0x80ff8000, 0x27137e03, 0x336a4b20, 0x0f817107, 0x13876e18, 0x730f2f7e, 0x2f450b75, 0x6d02200b,
+ 0x6d66094c, 0x4b802009, 0x15820a02, 0x2f45fe20, 0x5e032006, 0x00202fd9, 0x450af741, 0xeb412e0f, 0x0ff3411f, 0x420a8b65, 0xf7410eae, 0x1c664810,
+ 0x540e1145, 0xbfa509f3, 0x42302f58, 0x80200c35, 0xcb066c47, 0x4b1120c1, 0x41492abb, 0x34854110, 0xa7097b72, 0x251545c7, 0x4b2c7f56, 0xc5b40bab,
+ 0x940cd54e, 0x2e6151c8, 0x09f35f18, 0x4b420420, 0x09677121, 0x8f24f357, 0x1b5418e1, 0x08915a1f, 0x3143d894, 0x22541805, 0x1b9b4b0e, 0x8c0d3443,
+ 0x1400240d, 0x18ff8000, 0x582e6387, 0xf99b2b3b, 0x8807a550, 0x17a14790, 0x2184fd20, 0x5758fe20, 0x2354882c, 0x15000080, 0x5e056751, 0x334c2c2f,
+ 0x97c58f0c, 0x1fd7410f, 0x0d4d4018, 0x4114dc41, 0x04470ed6, 0x0dd54128, 0x00820020, 0x02011523, 0x22008700, 0x86480024, 0x0001240a, 0x8682001a,
+ 0x0002240b, 0x866c000e, 0x8a03200b, 0x8a042017, 0x0005220b, 0x22218614, 0x84060000, 0x86012017, 0x8212200f, 0x250b8519, 0x000d0001, 0x0b850031,
+ 0x07000224, 0x0b862600, 0x11000324, 0x0b862d00, 0x238a0420, 0x0a000524, 0x17863e00, 0x17840620, 0x01000324, 0x57820904, 0x0b85a783, 0x0b85a785,
+ 0x0b85a785, 0x22000325, 0x85007a00, 0x85a7850b, 0x85a7850b, 0x22a7850b, 0x82300032, 0x00342201, 0x0805862f, 0x35003131, 0x54207962, 0x74736972,
+ 0x47206e61, 0x6d6d6972, 0x65527265, 0x616c7567, 0x58545472, 0x6f725020, 0x43796767, 0x6e61656c, 0x30325454, 0x822f3430, 0x35313502, 0x79006200,
+ 0x54002000, 0x69007200, 0x74007300, 0x6e006100, 0x47200f82, 0x6d240f84, 0x65006d00, 0x52200982, 0x67240582, 0x6c007500, 0x72201d82, 0x54222b82,
+ 0x23825800, 0x19825020, 0x67006f22, 0x79220182, 0x1b824300, 0x3b846520, 0x1f825420, 0x41000021, 0x1422099b, 0x0b410000, 0x87088206, 0x01012102,
+ 0x78080982, 0x01020101, 0x01040103, 0x01060105, 0x01080107, 0x010a0109, 0x010c010b, 0x010e010d, 0x0110010f, 0x01120111, 0x01140113, 0x01160115,
+ 0x01180117, 0x011a0119, 0x011c011b, 0x011e011d, 0x0020011f, 0x00040003, 0x00060005, 0x00080007, 0x000a0009, 0x000c000b, 0x000e000d, 0x0010000f,
+ 0x00120011, 0x00140013, 0x00160015, 0x00180017, 0x001a0019, 0x001c001b, 0x001e001d, 0x08bb821f, 0x22002142, 0x24002300, 0x26002500, 0x28002700,
+ 0x2a002900, 0x2c002b00, 0x2e002d00, 0x30002f00, 0x32003100, 0x34003300, 0x36003500, 0x38003700, 0x3a003900, 0x3c003b00, 0x3e003d00, 0x40003f00,
+ 0x42004100, 0x4b09f382, 0x00450044, 0x00470046, 0x00490048, 0x004b004a, 0x004d004c, 0x004f004e, 0x00510050, 0x00530052, 0x00550054, 0x00570056,
+ 0x00590058, 0x005b005a, 0x005d005c, 0x005f005e, 0x01610060, 0x01220121, 0x01240123, 0x01260125, 0x01280127, 0x012a0129, 0x012c012b, 0x012e012d,
+ 0x0130012f, 0x01320131, 0x01340133, 0x01360135, 0x01380137, 0x013a0139, 0x013c013b, 0x013e013d, 0x0140013f, 0x00ac0041, 0x008400a3, 0x00bd0085,
+ 0x00e80096, 0x008e0086, 0x009d008b, 0x00a400a9, 0x008a00ef, 0x008300da, 0x00f20093, 0x008d00f3, 0x00880097, 0x00de00c3, 0x009e00f1, 0x00f500aa,
+ 0x00f600f4, 0x00ad00a2, 0x00c700c9, 0x006200ae, 0x00900063, 0x00cb0064, 0x00c80065, 0x00cf00ca, 0x00cd00cc, 0x00e900ce, 0x00d30066, 0x00d100d0,
+ 0x006700af, 0x009100f0, 0x00d400d6, 0x006800d5, 0x00ed00eb, 0x006a0089, 0x006b0069, 0x006c006d, 0x00a0006e, 0x0071006f, 0x00720070, 0x00750073,
+ 0x00760074, 0x00ea0077, 0x007a0078, 0x007b0079, 0x007c007d, 0x00a100b8, 0x007e007f, 0x00810080, 0x00ee00ec, 0x6e750eba, 0x646f6369, 0x78302365,
+ 0x31303030, 0x32200e8d, 0x33200e8d, 0x34200e8d, 0x35200e8d, 0x36200e8d, 0x37200e8d, 0x38200e8d, 0x39200e8d, 0x61200e8d, 0x62200e8d, 0x63200e8d,
+ 0x64200e8d, 0x65200e8d, 0x66200e8d, 0x31210e8c, 0x8d0e8d30, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef,
+ 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x8d3120ef, 0x66312def, 0x6c656406, 0x04657465, 0x6f727545, 0x3820ec8c, 0x3820ec8d,
+ 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d, 0x3820ec8d,
+ 0x3820ec8d, 0x200ddc41, 0x0ddc4139, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920,
+ 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0xef8d3920, 0x00663923, 0x48fa0500, 0x00f762f9,
+};
+
//-----------------------------------------------------------------------------
//---- Include imgui_user.inl at the end of imgui.cpp
diff --git a/imgui.h b/imgui.h
index 9248ae44..b4cb11c4 100644
--- a/imgui.h
+++ b/imgui.h
@@ -1,4 +1,4 @@
-// ImGui library v1.20
+// ImGui library v1.30 wip
// See .cpp file for commentary.
// See ImGui::ShowTestWindow() for sample code.
// Read 'Programmer guide' in .cpp for notes on how to setup ImGui in your codebase.
@@ -129,7 +129,7 @@ public:
// - struct ImGuiTextBuffer // Text buffer for logging/accumulating text
// - struct ImGuiStorage // Custom key value storage (if you need to alter open/close states manually)
// - struct ImDrawList // Draw command list
-// - struct ImFont // Bitmap font loader
+// - struct ImFont // TTF font loader, bake glyphs into bitmap
// ImGui End-user API
// In a namespace so that user can add extra functions (e.g. Value() helpers for your vector or common types)
@@ -309,7 +309,6 @@ namespace ImGui
IMGUI_API float GetTime();
IMGUI_API int GetFrameCount();
IMGUI_API const char* GetStyleColName(ImGuiCol idx);
- IMGUI_API void GetDefaultFontData(const void** fnt_data, unsigned int* fnt_size, const void** png_data, unsigned int* png_size);
IMGUI_API ImVec2 CalcTextSize(const char* text, const char* text_end = NULL, bool hide_text_after_double_hash = false, float wrap_width = -1.0f);
} // namespace ImGui
@@ -729,97 +728,59 @@ struct ImDrawList
IMGUI_API void AddText(ImFont* font, float font_size, const ImVec2& pos, ImU32 col, const char* text_begin, const char* text_end = NULL, float wrap_width = 0.0f);
};
-// Bitmap font data loader & renderer into vertices
-// Using the .fnt format exported by BMFont
-// - tool: http://www.angelcode.com/products/bmfont
-// - file-format: http://www.angelcode.com/products/bmfont/doc/file_format.html
-// Assume valid file data (won't handle invalid/malicious data)
-// Handle a subset of the options, namely:
-// - kerning pair are not supported (because some ImGui code does per-character CalcTextSize calls, need to turn it into something more state-ful to allow for kerning)
+// TTF font loading and rendering
+// NB: kerning pair are not supported (because some ImGui code does per-character CalcTextSize calls, need to turn it into something more state-ful to allow for kerning)
struct ImFont
{
- struct FntInfo;
- struct FntCommon;
- struct FntGlyph;
- struct FntKerning;
-
// Settings
- float Scale; // = 1.0f // Base font scale, multiplied by the per-window font scale which you can adjust with SetFontScale()
- ImVec2 DisplayOffset; // = (0.0f,0.0f) // Offset font rendering by xx pixels
- ImVec2 TexUvForWhite; // = (0.0f,0.0f) // Font texture must have a white pixel at this UV coordinate. Adjust if you are using custom texture.
- ImWchar FallbackChar; // = '?' // Replacement glyph is one isn't found.
-
- // Data
- unsigned char* Data; // Raw data, content of .fnt file
- size_t DataSize; //
- bool DataOwned; //
- const FntInfo* Info; // (point into raw data)
- const FntCommon* Common; // (point into raw data)
- const FntGlyph* Glyphs; // (point into raw data)
- size_t GlyphsCount; //
- const FntKerning* Kerning; // (point into raw data) - NB: kerning is unsupported
- size_t KerningCount; //
- ImVector Filenames; // (point into raw data)
- ImVector IndexLookup; // (built)
- const FntGlyph* FallbackGlyph; // == FindGlyph(FontFallbackChar)
-
- IMGUI_API ImFont();
- IMGUI_API ~ImFont() { Clear(); }
-
- IMGUI_API bool LoadFromMemory(const void* data, size_t data_size);
- IMGUI_API bool LoadFromFile(const char* filename);
- IMGUI_API void Clear();
- IMGUI_API void BuildLookupTable();
- IMGUI_API const FntGlyph* FindGlyph(unsigned short c) const;
- IMGUI_API bool IsLoaded() const { return Info != NULL && Common != NULL && Glyphs != NULL; }
-
- // 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable.
- // 'wrap_width' enable automatic word-wrapping across multiple lines to fit into given width. 0.0f to disable.
- IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8
- IMGUI_API ImVec2 CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL) const; // wchar
- IMGUI_API void RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, ImDrawVert*& out_vertices, float wrap_width = 0.0f) const;
-
- IMGUI_API const char* CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const;
-
-#pragma pack(push, 1)
- struct FntInfo
+ float Scale; // = 1.0f // Base font scale, multiplied by the per-window font scale which you can adjust with SetFontScale()
+ ImVec2 DisplayOffset; // = (0.0f,0.0f) // Offset font rendering by xx pixels
+ ImWchar FallbackChar; // = '?' // Replacement glyph if one isn't found.
+
+ // Texture data
+ unsigned char* TexPixels; // 1 byte, 1 component per pixel. Total byte size of TexWidth * TexHeight
+ int TexWidth;
+ int TexHeight;
+ ImVec2 TexExtraDataPos; // Position of our rectangle where we draw non-font graphics
+ ImVec2 TexUvWhitePixel; // Texture coordinates to a white pixel (part of the TexExtraData block)
+
+ struct Glyph
{
- signed short FontSize;
- unsigned char BitField; // bit 0: smooth, bit 1: unicode, bit 2: italic, bit 3: bold, bit 4: fixedHeight, bits 5-7: reserved
- unsigned char CharSet;
- unsigned short StretchH;
- unsigned char AA;
- unsigned char PaddingUp, PaddingRight, PaddingDown, PaddingLeft;
- unsigned char SpacingHoriz, SpacingVert, Outline;
- //char FontName[];
+ ImWchar Codepoint;
+ signed short XAdvance;
+ signed short Width, Height;
+ signed short XOffset, YOffset;
+ float U0, V0, U1, V1; // Texture coordinates
};
- struct FntCommon
- {
- unsigned short LineHeight, Base;
- unsigned short ScaleW, ScaleH;
- unsigned short Pages;
- unsigned char BitField;
- unsigned char Channels[4];
- };
+ // Runtime data
+ float FontSize; // Height of characters
+ ImVector Glyphs;
+ ImVector IndexLookup;
+ const Glyph* FallbackGlyph; // == FindGlyph(FontFallbackChar)
- struct FntGlyph
- {
- unsigned int Id;
- unsigned short X, Y, Width, Height;
- signed short XOffset, YOffset;
- signed short XAdvance;
- unsigned char Page;
- unsigned char Channel;
- };
+ // Methods
+ IMGUI_API ImFont();
+ IMGUI_API ~ImFont();
+ IMGUI_API bool LoadDefault();
+ IMGUI_API bool LoadFromFileTTF(const char* filename, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0);
+ IMGUI_API bool LoadFromMemoryTTF(const void* data, size_t data_size, float size_pixels, const ImWchar* glyph_ranges = NULL, int font_no = 0);
+ IMGUI_API void Clear();
+ IMGUI_API void BuildLookupTable();
+ IMGUI_API const Glyph* FindGlyph(unsigned short c) const;
+ IMGUI_API bool IsLoaded() const { return TexPixels != NULL && !Glyphs.empty(); }
+
+ // Retrieve list of common Unicode ranges (2 value per range, values are inclusive, zero-terminated list)
+ static IMGUI_API const ImWchar* GetGlyphRangesDefault(); // Basic Latin, Extended Latin + a few more
+ static IMGUI_API const ImWchar* GetGlyphRangesJapanese(); // Default + Hiragana, Katakana, Half-Width, Selection of 1946 Ideographs
+ static IMGUI_API const ImWchar* GetGlyphRangesChinese(); // Japanese + full set of about 21000 CJK Unified Ideographs
- struct FntKerning
- {
- unsigned int IdFirst;
- unsigned int IdSecond;
- signed short Amount;
- };
-#pragma pack(pop)
+ // 'max_width' stops rendering after a certain width (could be turned into a 2d size). FLT_MAX to disable.
+ // 'wrap_width' enable automatic word-wrapping across multiple lines to fit into given width. 0.0f to disable.
+ IMGUI_API ImVec2 CalcTextSizeA(float size, float max_width, float wrap_width, const char* text_begin, const char* text_end = NULL, const char** remaining = NULL) const; // utf8
+ IMGUI_API ImVec2 CalcTextSizeW(float size, float max_width, const ImWchar* text_begin, const ImWchar* text_end, const ImWchar** remaining = NULL) const; // wchar
+ IMGUI_API void RenderText(float size, ImVec2 pos, ImU32 col, const ImVec4& clip_rect, const char* text_begin, const char* text_end, ImDrawVert*& out_vertices, float wrap_width = 0.0f) const;
+ IMGUI_API const char* CalcWordWrapPositionA(float scale, const char* text, const char* text_end, float wrap_width) const;
};
//---- Include imgui_user.h at the end of imgui.h
diff --git a/stb_rect_pack.h b/stb_rect_pack.h
new file mode 100644
index 00000000..dcc9d887
--- /dev/null
+++ b/stb_rect_pack.h
@@ -0,0 +1,546 @@
+// stb_rect_pack.h - v0.05 - public domain - rectangle packing
+// Sean Barrett 2014
+//
+// Useful for e.g. packing rectangular textures into an atlas.
+// Does not do rotation.
+//
+// Not necessarily the awesomest packing method, but better than
+// the totally naive one in stb_truetype (which is primarily what
+// this is meant to replace).
+//
+// Has only had a few tests run, may have issues.
+//
+// More docs to come.
+//
+// No memory allocations; uses qsort() and assert() from stdlib.
+//
+// This library currently uses the Skyline Bottom-Left algorithm.
+//
+// Please note: better rectangle packers are welcome! Please
+// implement them to the same API, but with a different init
+// function.
+//
+// Version history:
+//
+// 0.05: added STBRP_ASSERT to allow replacing assert
+// 0.04: fixed minor bug in STBRP_LARGE_RECTS support
+// 0.01: initial release
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// INCLUDE SECTION
+//
+
+#ifndef STB_INCLUDE_STB_RECT_PACK_H
+#define STB_INCLUDE_STB_RECT_PACK_H
+
+#define STB_RECT_PACK_VERSION 1
+
+#ifdef STBRP_STATIC
+#define STBRP_DEF static
+#else
+#define STBRP_DEF extern
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct stbrp_context stbrp_context;
+typedef struct stbrp_node stbrp_node;
+typedef struct stbrp_rect stbrp_rect;
+
+#ifdef STBRP_LARGE_RECTS
+typedef int stbrp_coord;
+#else
+typedef unsigned short stbrp_coord;
+#endif
+
+STBRP_DEF void stbrp_pack_rects (stbrp_context *context, stbrp_rect *rects, int num_rects);
+// Assign packed locations to rectangles. The rectangles are of type
+// 'stbrp_rect' defined below, stored in the array 'rects', and there
+// are 'num_rects' many of them.
+//
+// Rectangles which are successfully packed have the 'was_packed' flag
+// set to a non-zero value and 'x' and 'y' store the minimum location
+// on each axis (i.e. bottom-left in cartesian coordinates, top-left
+// if you imagine y increasing downwards). Rectangles which do not fit
+// have the 'was_packed' flag set to 0.
+//
+// You should not try to access the 'rects' array from another thread
+// while this function is running, as the function temporarily reorders
+// the array while it executes.
+//
+// To pack into another rectangle, you need to call stbrp_init_target
+// again. To continue packing into the same rectangle, you can call
+// this function again. Calling this multiple times with multiple rect
+// arrays will probably produce worse packing results than calling it
+// a single time with the full rectangle array, but the option is
+// available.
+
+struct stbrp_rect
+{
+ // reserved for your use:
+ int id;
+
+ // input:
+ stbrp_coord w, h;
+
+ // output:
+ stbrp_coord x, y;
+ int was_packed; // non-zero if valid packing
+
+}; // 16 bytes, nominally
+
+
+STBRP_DEF void stbrp_init_target (stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes);
+// Initialize a rectangle packer to:
+// pack a rectangle that is 'width' by 'height' in dimensions
+// using temporary storage provided by the array 'nodes', which is 'num_nodes' long
+//
+// You must call this function every time you start packing into a new target.
+//
+// There is no "shutdown" function. The 'nodes' memory must stay valid for
+// the following stbrp_pack_rects() call (or calls), but can be freed after
+// the call (or calls) finish.
+//
+// Note: to guarantee best results, either:
+// 1. make sure 'num_nodes' >= 'width'
+// or 2. call stbrp_allow_out_of_mem() defined below with 'allow_out_of_mem = 1'
+//
+// If you don't do either of the above things, widths will be quantized to multiples
+// of small integers to guarantee the algorithm doesn't run out of temporary storage.
+//
+// If you do #2, then the non-quantized algorithm will be used, but the algorithm
+// may run out of temporary storage and be unable to pack some rectangles.
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem (stbrp_context *context, int allow_out_of_mem);
+// Optionally call this function after init but before doing any packing to
+// change the handling of the out-of-temp-memory scenario, described above.
+// If you call init again, this will be reset to the default (false).
+
+
+STBRP_DEF void stbrp_setup_heuristic (stbrp_context *context, int heuristic);
+// Optionally select which packing heuristic the library should use. Different
+// heuristics will produce better/worse results for different data sets.
+// If you call init again, this will be reset to the default.
+
+enum
+{
+ STBRP_HEURISTIC_Skyline_default=0,
+ STBRP_HEURISTIC_Skyline_BL_sortHeight = STBRP_HEURISTIC_Skyline_default,
+ STBRP_HEURISTIC_Skyline_BF_sortHeight,
+};
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// the details of the following structures don't matter to you, but they must
+// be visible so you can handle the memory allocations for them
+
+struct stbrp_node
+{
+ stbrp_coord x,y;
+ stbrp_node *next;
+};
+
+struct stbrp_context
+{
+ int width;
+ int height;
+ int align;
+ int init_mode;
+ int heuristic;
+ int num_nodes;
+ stbrp_node *active_head;
+ stbrp_node *free_head;
+ stbrp_node extra[2]; // we allocate two extra nodes so optimal user-node-count is 'width' not 'width+2'
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// IMPLEMENTATION SECTION
+//
+
+#ifdef STB_RECT_PACK_IMPLEMENTATION
+#include
+
+#ifndef STBRP_ASSERT
+#include
+#define STBRP_ASSERT assert
+#endif
+
+enum
+{
+ STBRP__INIT_skyline = 1,
+};
+
+STBRP_DEF void stbrp_setup_heuristic(stbrp_context *context, int heuristic)
+{
+ switch (context->init_mode) {
+ case STBRP__INIT_skyline:
+ STBRP_ASSERT(heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight || heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight);
+ context->heuristic = heuristic;
+ break;
+ default:
+ STBRP_ASSERT(0);
+ }
+}
+
+STBRP_DEF void stbrp_setup_allow_out_of_mem(stbrp_context *context, int allow_out_of_mem)
+{
+ if (allow_out_of_mem)
+ // if it's ok to run out of memory, then don't bother aligning them;
+ // this gives better packing, but may fail due to OOM (even though
+ // the rectangles easily fit). @TODO a smarter approach would be to only
+ // quantize once we've hit OOM, then we could get rid of this parameter.
+ context->align = 1;
+ else {
+ // if it's not ok to run out of memory, then quantize the widths
+ // so that num_nodes is always enough nodes.
+ //
+ // I.e. num_nodes * align >= width
+ // align >= width / num_nodes
+ // align = ceil(width/num_nodes)
+
+ context->align = (context->width + context->num_nodes-1) / context->num_nodes;
+ }
+}
+
+STBRP_DEF void stbrp_init_target(stbrp_context *context, int width, int height, stbrp_node *nodes, int num_nodes)
+{
+ int i;
+#ifndef STBRP_LARGE_RECTS
+ STBRP_ASSERT(width <= 0xffff && height <= 0xffff);
+#endif
+
+ for (i=0; i < num_nodes-1; ++i)
+ nodes[i].next = &nodes[i+1];
+ nodes[i].next = NULL;
+ context->init_mode = STBRP__INIT_skyline;
+ context->heuristic = STBRP_HEURISTIC_Skyline_default;
+ context->free_head = &nodes[0];
+ context->active_head = &context->extra[0];
+ context->width = width;
+ context->height = height;
+ context->num_nodes = num_nodes;
+ stbrp_setup_allow_out_of_mem(context, 0);
+
+ // node 0 is the full width, node 1 is the sentinel (lets us not store width explicitly)
+ context->extra[0].x = 0;
+ context->extra[0].y = 0;
+ context->extra[0].next = &context->extra[1];
+ context->extra[1].x = (stbrp_coord) width;
+#ifdef STBRP_LARGE_RECTS
+ context->extra[1].y = (1<<30);
+#else
+ context->extra[1].y = 65535;
+#endif
+ context->extra[1].next = NULL;
+}
+
+// find minimum y position if it starts at x1
+static int stbrp__skyline_find_min_y(stbrp_context *c, stbrp_node *first, int x0, int width, int *pwaste)
+{
+ stbrp_node *node = first;
+ int x1 = x0 + width;
+ int min_y, visited_width, waste_area;
+ STBRP_ASSERT(first->x <= x0);
+
+ #if 0
+ // skip in case we're past the node
+ while (node->next->x <= x0)
+ ++node;
+ #else
+ STBRP_ASSERT(node->next->x > x0); // we ended up handling this in the caller for efficiency
+ #endif
+
+ STBRP_ASSERT(node->x <= x0);
+
+ min_y = 0;
+ waste_area = 0;
+ visited_width = 0;
+ while (node->x < x1) {
+ if (node->y > min_y) {
+ // raise min_y higher.
+ // we've accounted for all waste up to min_y,
+ // but we'll now add more waste for everything we've visted
+ waste_area += visited_width * (node->y - min_y);
+ min_y = node->y;
+ // the first time through, visited_width might be reduced
+ if (node->x < x0)
+ visited_width += node->next->x - x0;
+ else
+ visited_width += node->next->x - node->x;
+ } else {
+ // add waste area
+ int under_width = node->next->x - node->x;
+ if (under_width + visited_width > width)
+ under_width = width - visited_width;
+ waste_area += under_width * (min_y - node->y);
+ visited_width += under_width;
+ }
+ node = node->next;
+ }
+
+ *pwaste = waste_area;
+ return min_y;
+}
+
+typedef struct
+{
+ int x,y;
+ stbrp_node **prev_link;
+} stbrp__findresult;
+
+static stbrp__findresult stbrp__skyline_find_best_pos(stbrp_context *c, int width, int height)
+{
+ int best_waste = (1<<30), best_x, best_y = (1 << 30);
+ stbrp__findresult fr;
+ stbrp_node **prev, *node, *tail, **best = NULL;
+
+ // align to multiple of c->align
+ width = (width + c->align - 1);
+ width -= width % c->align;
+ STBRP_ASSERT(width % c->align == 0);
+
+ node = c->active_head;
+ prev = &c->active_head;
+ while (node->x + width <= c->width) {
+ int y,waste;
+ y = stbrp__skyline_find_min_y(c, node, node->x, width, &waste);
+ if (c->heuristic == STBRP_HEURISTIC_Skyline_BL_sortHeight) { // actually just want to test BL
+ // bottom left
+ if (y < best_y) {
+ best_y = y;
+ best = prev;
+ }
+ } else {
+ // best-fit
+ if (y + height <= c->height) {
+ // can only use it if it first vertically
+ if (y < best_y || (y == best_y && waste < best_waste)) {
+ best_y = y;
+ best_waste = waste;
+ best = prev;
+ }
+ }
+ }
+ prev = &node->next;
+ node = node->next;
+ }
+
+ best_x = (best == NULL) ? 0 : (*best)->x;
+
+ // if doing best-fit (BF), we also have to try aligning right edge to each node position
+ //
+ // e.g, if fitting
+ //
+ // ____________________
+ // |____________________|
+ //
+ // into
+ //
+ // | |
+ // | ____________|
+ // |____________|
+ //
+ // then right-aligned reduces waste, but bottom-left BL is always chooses left-aligned
+ //
+ // This makes BF take about 2x the time
+
+ if (c->heuristic == STBRP_HEURISTIC_Skyline_BF_sortHeight) {
+ tail = c->active_head;
+ node = c->active_head;
+ prev = &c->active_head;
+ // find first node that's admissible
+ while (tail->x < width)
+ tail = tail->next;
+ while (tail) {
+ int xpos = tail->x - width;
+ int y,waste;
+ STBRP_ASSERT(xpos >= 0);
+ // find the left position that matches this
+ while (node->next->x <= xpos) {
+ prev = &node->next;
+ node = node->next;
+ }
+ STBRP_ASSERT(node->next->x > xpos && node->x <= xpos);
+ y = stbrp__skyline_find_min_y(c, node, xpos, width, &waste);
+ if (y + height < c->height) {
+ if (y <= best_y) {
+ if (y < best_y || waste < best_waste || (waste==best_waste && xpos < best_x)) {
+ best_x = xpos;
+ STBRP_ASSERT(y <= best_y);
+ best_y = y;
+ best_waste = waste;
+ best = prev;
+ }
+ }
+ }
+ tail = tail->next;
+ }
+ }
+
+ fr.prev_link = best;
+ fr.x = best_x;
+ fr.y = best_y;
+ return fr;
+}
+
+static stbrp__findresult stbrp__skyline_pack_rectangle(stbrp_context *context, int width, int height)
+{
+ // find best position according to heuristic
+ stbrp__findresult res = stbrp__skyline_find_best_pos(context, width, height);
+ stbrp_node *node, *cur;
+
+ // bail if:
+ // 1. it failed
+ // 2. the best node doesn't fit (we don't always check this)
+ // 3. we're out of memory
+ if (res.prev_link == NULL || res.y + height > context->height || context->free_head == NULL) {
+ res.prev_link = NULL;
+ return res;
+ }
+
+ // on success, create new node
+ node = context->free_head;
+ node->x = (stbrp_coord) res.x;
+ node->y = (stbrp_coord) (res.y + height);
+
+ context->free_head = node->next;
+
+ // insert the new node into the right starting point, and
+ // let 'cur' point to the remaining nodes needing to be
+ // stiched back in
+
+ cur = *res.prev_link;
+ if (cur->x < res.x) {
+ // preserve the existing one, so start testing with the next one
+ stbrp_node *next = cur->next;
+ cur->next = node;
+ cur = next;
+ } else {
+ *res.prev_link = node;
+ }
+
+ // from here, traverse cur and free the nodes, until we get to one
+ // that shouldn't be freed
+ while (cur->next && cur->next->x <= res.x + width) {
+ stbrp_node *next = cur->next;
+ // move the current node to the free list
+ cur->next = context->free_head;
+ context->free_head = cur;
+ cur = next;
+ }
+
+ // stitch the list back in
+ node->next = cur;
+
+ if (cur->x < res.x + width)
+ cur->x = (stbrp_coord) (res.x + width);
+
+#ifdef _DEBUG
+ cur = context->active_head;
+ while (cur->x < context->width) {
+ STBRP_ASSERT(cur->x < cur->next->x);
+ cur = cur->next;
+ }
+ STBRP_ASSERT(cur->next == NULL);
+
+ {
+ stbrp_node *L1 = NULL, *L2 = NULL;
+ int count=0;
+ cur = context->active_head;
+ while (cur) {
+ L1 = cur;
+ cur = cur->next;
+ ++count;
+ }
+ cur = context->free_head;
+ while (cur) {
+ L2 = cur;
+ cur = cur->next;
+ ++count;
+ }
+ STBRP_ASSERT(count == context->num_nodes+2);
+ }
+#endif
+
+ return res;
+}
+
+static int rect_height_compare(const void *a, const void *b)
+{
+ stbrp_rect *p = (stbrp_rect *) a;
+ stbrp_rect *q = (stbrp_rect *) b;
+ if (p->h > q->h)
+ return -1;
+ if (p->h < q->h)
+ return 1;
+ return (p->w > q->w) ? -1 : (p->w < q->w);
+}
+
+static int rect_width_compare(const void *a, const void *b)
+{
+ stbrp_rect *p = (stbrp_rect *) a;
+ stbrp_rect *q = (stbrp_rect *) b;
+ if (p->w > q->w)
+ return -1;
+ if (p->w < q->w)
+ return 1;
+ return (p->h > q->h) ? -1 : (p->h < q->h);
+}
+
+static int rect_original_order(const void *a, const void *b)
+{
+ stbrp_rect *p = (stbrp_rect *) a;
+ stbrp_rect *q = (stbrp_rect *) b;
+ return (p->was_packed < q->was_packed) ? -1 : (p->was_packed > q->was_packed);
+}
+
+#ifdef STBRP_LARGE_RECTS
+#define STBRP__MAXVAL 0xffffffff
+#else
+#define STBRP__MAXVAL 0xffff
+#endif
+
+STBRP_DEF void stbrp_pack_rects(stbrp_context *context, stbrp_rect *rects, int num_rects)
+{
+ int i;
+
+ // we use the 'was_packed' field internally to allow sorting/unsorting
+ for (i=0; i < num_rects; ++i) {
+ rects[i].was_packed = i;
+ #ifndef STBRP_LARGE_RECTS
+ STBRP_ASSERT(rects[i].w <= 0xffff && rects[i].h <= 0xffff);
+ #endif
+ }
+
+ // sort according to heuristic
+ qsort(rects, num_rects, sizeof(rects[0]), rect_height_compare);
+
+ for (i=0; i < num_rects; ++i) {
+ stbrp__findresult fr = stbrp__skyline_pack_rectangle(context, rects[i].w, rects[i].h);
+ if (fr.prev_link) {
+ rects[i].x = (stbrp_coord) fr.x;
+ rects[i].y = (stbrp_coord) fr.y;
+ } else {
+ rects[i].x = rects[i].y = STBRP__MAXVAL;
+ }
+ }
+
+ // unsort
+ qsort(rects, num_rects, sizeof(rects[0]), rect_original_order);
+
+ // set was_packed flags
+ for (i=0; i < num_rects; ++i)
+ rects[i].was_packed = !(rects[i].x == STBRP__MAXVAL && rects[i].y == STBRP__MAXVAL);
+}
+#endif
diff --git a/stb_truetype.h b/stb_truetype.h
new file mode 100644
index 00000000..2143164a
--- /dev/null
+++ b/stb_truetype.h
@@ -0,0 +1,2646 @@
+// stb_truetype.h - v1.02 - public domain
+// authored from 2009-2014 by Sean Barrett / RAD Game Tools
+//
+// This library processes TrueType files:
+// parse files
+// extract glyph metrics
+// extract glyph shapes
+// render glyphs to one-channel bitmaps with antialiasing (box filter)
+//
+// Todo:
+// non-MS cmaps
+// crashproof on bad data
+// hinting? (no longer patented)
+// cleartype-style AA?
+// optimize: use simple memory allocator for intermediates
+// optimize: build edge-list directly from curves
+// optimize: rasterize directly from curves?
+//
+// ADDITIONAL CONTRIBUTORS
+//
+// Mikko Mononen: compound shape support, more cmap formats
+// Tor Andersson: kerning, subpixel rendering
+//
+// Bug/warning reports/fixes:
+// "Zer" on mollyrocket (with fix)
+// Cass Everitt
+// stoiko (Haemimont Games)
+// Brian Hook
+// Walter van Niftrik
+// David Gow
+// David Given
+// Ivan-Assen Ivanov
+// Anthony Pesch
+// Johan Duparc
+// Hou Qiming
+// Fabian "ryg" Giesen
+//
+// Misc other:
+// Ryan Gordon
+//
+// VERSION HISTORY
+//
+// 1.02 (2014-12-10) fix various warnings & compile issues w/ stb_rect_pack, C++
+// 1.01 (2014-12-08) fix subpixel position when oversampling to exactly match
+// non-oversampled; STBTT_POINT_SIZE for packed case only
+// 1.00 (2014-12-06) add new PackBegin etc. API, w/ support for oversampling
+// 0.99 (2014-09-18) fix multiple bugs with subpixel rendering (ryg)
+// 0.9 (2014-08-07) support certain mac/iOS fonts without an MS platformID
+// 0.8b (2014-07-07) fix a warning
+// 0.8 (2014-05-25) fix a few more warnings
+// 0.7 (2013-09-25) bugfix: subpixel glyph bug fixed in 0.5 had come back
+// 0.6c (2012-07-24) improve documentation
+// 0.6b (2012-07-20) fix a few more warnings
+// 0.6 (2012-07-17) fix warnings; added stbtt_ScaleForMappingEmToPixels,
+// stbtt_GetFontBoundingBox, stbtt_IsGlyphEmpty
+// 0.5 (2011-12-09) bugfixes:
+// subpixel glyph renderer computed wrong bounding box
+// first vertex of shape can be off-curve (FreeSans)
+// 0.4b (2011-12-03) fixed an error in the font baking example
+// 0.4 (2011-12-01) kerning, subpixel rendering (tor)
+// bugfixes for:
+// codepoint-to-glyph conversion using table fmt=12
+// codepoint-to-glyph conversion using table fmt=4
+// stbtt_GetBakedQuad with non-square texture (Zer)
+// updated Hello World! sample to use kerning and subpixel
+// fixed some warnings
+// 0.3 (2009-06-24) cmap fmt=12, compound shapes (MM)
+// userdata, malloc-from-userdata, non-zero fill (stb)
+// 0.2 (2009-03-11) Fix unsigned/signed char warnings
+// 0.1 (2009-03-09) First public release
+//
+// LICENSE
+//
+// This software is in the public domain. Where that dedication is not
+// recognized, you are granted a perpetual, irrevokable license to copy
+// and modify this file as you see fit.
+//
+// USAGE
+//
+// Include this file in whatever places neeed to refer to it. In ONE C/C++
+// file, write:
+// #define STB_TRUETYPE_IMPLEMENTATION
+// before the #include of this file. This expands out the actual
+// implementation into that C/C++ file.
+//
+// Simple 3D API (don't ship this, but it's fine for tools and quick start)
+// stbtt_BakeFontBitmap() -- bake a font to a bitmap for use as texture
+// stbtt_GetBakedQuad() -- compute quad to draw for a given char
+//
+// Improved 3D API (more shippable):
+// #include "stb_rect_pack.h" -- optional, but you really want it
+// stbtt_PackBegin()
+// stbtt_PackSetOversample() -- for improved quality on small fonts
+// stbtt_PackFontRanges() -- pack and renders
+// stbtt_PackEnd()
+// stbtt_GetPackedQuad()
+//
+// "Load" a font file from a memory buffer (you have to keep the buffer loaded)
+// stbtt_InitFont()
+// stbtt_GetFontOffsetForIndex() -- use for TTC font collections
+//
+// Render a unicode codepoint to a bitmap
+// stbtt_GetCodepointBitmap() -- allocates and returns a bitmap
+// stbtt_MakeCodepointBitmap() -- renders into bitmap you provide
+// stbtt_GetCodepointBitmapBox() -- how big the bitmap must be
+//
+// Character advance/positioning
+// stbtt_GetCodepointHMetrics()
+// stbtt_GetFontVMetrics()
+// stbtt_GetCodepointKernAdvance()
+//
+// ADDITIONAL DOCUMENTATION
+//
+// Immediately after this block comment are a series of sample programs.
+//
+// After the sample programs is the "header file" section. This section
+// includes documentation for each API function.
+//
+// Some important concepts to understand to use this library:
+//
+// Codepoint
+// Characters are defined by unicode codepoints, e.g. 65 is
+// uppercase A, 231 is lowercase c with a cedilla, 0x7e30 is
+// the hiragana for "ma".
+//
+// Glyph
+// A visual character shape (every codepoint is rendered as
+// some glyph)
+//
+// Glyph index
+// A font-specific integer ID representing a glyph
+//
+// Baseline
+// Glyph shapes are defined relative to a baseline, which is the
+// bottom of uppercase characters. Characters extend both above
+// and below the baseline.
+//
+// Current Point
+// As you draw text to the screen, you keep track of a "current point"
+// which is the origin of each character. The current point's vertical
+// position is the baseline. Even "baked fonts" use this model.
+//
+// Vertical Font Metrics
+// The vertical qualities of the font, used to vertically position
+// and space the characters. See docs for stbtt_GetFontVMetrics.
+//
+// Font Size in Pixels or Points
+// The preferred interface for specifying font sizes in stb_truetype
+// is to specify how tall the font's vertical extent should be in pixels.
+// If that sounds good enough, skip the next paragraph.
+//
+// Most font APIs instead use "points", which are a common typographic
+// measurement for describing font size, defined as 72 points per inch.
+// stb_truetype provides a point API for compatibility. However, true
+// "per inch" conventions don't make much sense on computer displays
+// since they different monitors have different number of pixels per
+// inch. For example, Windows traditionally uses a convention that
+// there are 96 pixels per inch, thus making 'inch' measurements have
+// nothing to do with inches, and thus effectively defining a point to
+// be 1.333 pixels. Additionally, the TrueType font data provides
+// an explicit scale factor to scale a given font's glyphs to points,
+// but the author has observed that this scale factor is often wrong
+// for non-commercial fonts, thus making fonts scaled in points
+// according to the TrueType spec incoherently sized in practice.
+//
+// ADVANCED USAGE
+//
+// Quality:
+//
+// - Use the functions with Subpixel at the end to allow your characters
+// to have subpixel positioning. Since the font is anti-aliased, not
+// hinted, this is very import for quality. (This is not possible with
+// baked fonts.)
+//
+// - Kerning is now supported, and if you're supporting subpixel rendering
+// then kerning is worth using to give your text a polished look.
+//
+// Performance:
+//
+// - Convert Unicode codepoints to glyph indexes and operate on the glyphs;
+// if you don't do this, stb_truetype is forced to do the conversion on
+// every call.
+//
+// - There are a lot of memory allocations. We should modify it to take
+// a temp buffer and allocate from the temp buffer (without freeing),
+// should help performance a lot.
+//
+// NOTES
+//
+// The system uses the raw data found in the .ttf file without changing it
+// and without building auxiliary data structures. This is a bit inefficient
+// on little-endian systems (the data is big-endian), but assuming you're
+// caching the bitmaps or glyph shapes this shouldn't be a big deal.
+//
+// It appears to be very hard to programmatically determine what font a
+// given file is in a general way. I provide an API for this, but I don't
+// recommend it.
+//
+//
+// SOURCE STATISTICS (based on v0.6c, 2050 LOC)
+//
+// Documentation & header file 520 LOC \___ 660 LOC documentation
+// Sample code 140 LOC /
+// Truetype parsing 620 LOC ---- 620 LOC TrueType
+// Software rasterization 240 LOC \ .
+// Curve tesselation 120 LOC \__ 550 LOC Bitmap creation
+// Bitmap management 100 LOC /
+// Baked bitmap interface 70 LOC /
+// Font name matching & access 150 LOC ---- 150
+// C runtime library abstraction 60 LOC ---- 60
+
+
+//////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+////
+//// SAMPLE PROGRAMS
+////
+//
+// Incomplete text-in-3d-api example, which draws quads properly aligned to be lossless
+//
+#if 0
+#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate implementation
+#include "stb_truetype.h"
+
+char ttf_buffer[1<<20];
+unsigned char temp_bitmap[512*512];
+
+stbtt_bakedchar cdata[96]; // ASCII 32..126 is 95 glyphs
+GLstbtt_uint ftex;
+
+void my_stbtt_initfont(void)
+{
+ fread(ttf_buffer, 1, 1<<20, fopen("c:/windows/fonts/times.ttf", "rb"));
+ stbtt_BakeFontBitmap(data,0, 32.0, temp_bitmap,512,512, 32,96, cdata); // no guarantee this fits!
+ // can free ttf_buffer at this point
+ glGenTextures(1, &ftex);
+ glBindTexture(GL_TEXTURE_2D, ftex);
+ glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, 512,512, 0, GL_ALPHA, GL_UNSIGNED_BYTE, temp_bitmap);
+ // can free temp_bitmap at this point
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+}
+
+void my_stbtt_print(float x, float y, char *text)
+{
+ // assume orthographic projection with units = screen pixels, origin at top left
+ glBindTexture(GL_TEXTURE_2D, ftex);
+ glBegin(GL_QUADS);
+ while (*text) {
+ if (*text >= 32 && *text < 128) {
+ stbtt_aligned_quad q;
+ stbtt_GetBakedQuad(cdata, 512,512, *text-32, &x,&y,&q,1);//1=opengl & d3d10+,0=d3d9
+ glTexCoord2f(q.s0,q.t1); glVertex2f(q.x0,q.y0);
+ glTexCoord2f(q.s1,q.t1); glVertex2f(q.x1,q.y0);
+ glTexCoord2f(q.s1,q.t0); glVertex2f(q.x1,q.y1);
+ glTexCoord2f(q.s0,q.t0); glVertex2f(q.x0,q.y1);
+ }
+ ++text;
+ }
+ glEnd();
+}
+#endif
+//
+//
+//////////////////////////////////////////////////////////////////////////////
+//
+// Complete program (this compiles): get a single bitmap, print as ASCII art
+//
+#if 0
+#include
+#define STB_TRUETYPE_IMPLEMENTATION // force following include to generate implementation
+#include "stb_truetype.h"
+
+char ttf_buffer[1<<25];
+
+int main(int argc, char **argv)
+{
+ stbtt_fontinfo font;
+ unsigned char *bitmap;
+ int w,h,i,j,c = (argc > 1 ? atoi(argv[1]) : 'a'), s = (argc > 2 ? atoi(argv[2]) : 20);
+
+ fread(ttf_buffer, 1, 1<<25, fopen(argc > 3 ? argv[3] : "c:/windows/fonts/arialbd.ttf", "rb"));
+
+ stbtt_InitFont(&font, ttf_buffer, stbtt_GetFontOffsetForIndex(ttf_buffer,0));
+ bitmap = stbtt_GetCodepointBitmap(&font, 0,stbtt_ScaleForPixelHeight(&font, s), c, &w, &h, 0,0);
+
+ for (j=0; j < h; ++j) {
+ for (i=0; i < w; ++i)
+ putchar(" .:ioVM@"[bitmap[j*w+i]>>5]);
+ putchar('\n');
+ }
+ return 0;
+}
+#endif
+//
+// Output:
+//
+// .ii.
+// @@@@@@.
+// V@Mio@@o
+// :i. V@V
+// :oM@@M
+// :@@@MM@M
+// @@o o@M
+// :@@. M@M
+// @@@o@@@@
+// :M@@V:@@.
+//
+//////////////////////////////////////////////////////////////////////////////
+//
+// Complete program: print "Hello World!" banner, with bugs
+//
+#if 0
+char buffer[24<<20];
+unsigned char screen[20][79];
+
+int main(int arg, char **argv)
+{
+ stbtt_fontinfo font;
+ int i,j,ascent,baseline,ch=0;
+ float scale, xpos=2; // leave a little padding in case the character extends left
+ char *text = "Heljo World!";
+
+ fread(buffer, 1, 1000000, fopen("c:/windows/fonts/arialbd.ttf", "rb"));
+ stbtt_InitFont(&font, buffer, 0);
+
+ scale = stbtt_ScaleForPixelHeight(&font, 15);
+ stbtt_GetFontVMetrics(&font, &ascent,0,0);
+ baseline = (int) (ascent*scale);
+
+ while (text[ch]) {
+ int advance,lsb,x0,y0,x1,y1;
+ float x_shift = xpos - (float) floor(xpos);
+ stbtt_GetCodepointHMetrics(&font, text[ch], &advance, &lsb);
+ stbtt_GetCodepointBitmapBoxSubpixel(&font, text[ch], scale,scale,x_shift,0, &x0,&y0,&x1,&y1);
+ stbtt_MakeCodepointBitmapSubpixel(&font, &screen[baseline + y0][(int) xpos + x0], x1-x0,y1-y0, 79, scale,scale,x_shift,0, text[ch]);
+ // note that this stomps the old data, so where character boxes overlap (e.g. 'lj') it's wrong
+ // because this API is really for baking character bitmaps into textures. if you want to render
+ // a sequence of characters, you really need to render each bitmap to a temp buffer, then
+ // "alpha blend" that into the working buffer
+ xpos += (advance * scale);
+ if (text[ch+1])
+ xpos += scale*stbtt_GetCodepointKernAdvance(&font, text[ch],text[ch+1]);
+ ++ch;
+ }
+
+ for (j=0; j < 20; ++j) {
+ for (i=0; i < 78; ++i)
+ putchar(" .:ioVM@"[screen[j][i]>>5]);
+ putchar('\n');
+ }
+
+ return 0;
+}
+#endif
+
+
+//////////////////////////////////////////////////////////////////////////////
+//////////////////////////////////////////////////////////////////////////////
+////
+//// INTEGRATION WITH YOUR CODEBASE
+////
+//// The following sections allow you to supply alternate definitions
+//// of C library functions used by stb_truetype.
+
+#ifdef STB_TRUETYPE_IMPLEMENTATION
+ // #define your own (u)stbtt_int8/16/32 before including to override this
+ #ifndef stbtt_uint8
+ typedef unsigned char stbtt_uint8;
+ typedef signed char stbtt_int8;
+ typedef unsigned short stbtt_uint16;
+ typedef signed short stbtt_int16;
+ typedef unsigned int stbtt_uint32;
+ typedef signed int stbtt_int32;
+ #endif
+
+ typedef char stbtt__check_size32[sizeof(stbtt_int32)==4 ? 1 : -1];
+ typedef char stbtt__check_size16[sizeof(stbtt_int16)==2 ? 1 : -1];
+
+ // #define your own STBTT_sort() to override this to avoid qsort
+ #ifndef STBTT_sort
+ #include
+ #define STBTT_sort(data,num_items,item_size,compare_func) qsort(data,num_items,item_size,compare_func)
+ #endif
+
+ // #define your own STBTT_ifloor/STBTT_iceil() to avoid math.h
+ #ifndef STBTT_ifloor
+ #include
+ #define STBTT_ifloor(x) ((int) floor(x))
+ #define STBTT_iceil(x) ((int) ceil(x))
+ #endif
+
+ #ifndef STBTT_sqrt
+ #include
+ #define STBTT_sqrt(x) sqrt(x)
+ #endif
+
+ // #define your own functions "STBTT_malloc" / "STBTT_free" to avoid malloc.h
+ #ifndef STBTT_malloc
+ #include
+ #define STBTT_malloc(x,u) ((void)(u),malloc(x))
+ #define STBTT_free(x,u) ((void)(u),free(x))
+ #endif
+
+ #ifndef STBTT_assert
+ #include
+ #define STBTT_assert(x) assert(x)
+ #endif
+
+ #ifndef STBTT_strlen
+ #include
+ #define STBTT_strlen(x) strlen(x)
+ #endif
+
+ #ifndef STBTT_memcpy
+ #include
+ #define STBTT_memcpy memcpy
+ #define STBTT_memset memset
+ #endif
+#endif
+
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+////
+//// INTERFACE
+////
+////
+
+#ifndef __STB_INCLUDE_STB_TRUETYPE_H__
+#define __STB_INCLUDE_STB_TRUETYPE_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// TEXTURE BAKING API
+//
+// If you use this API, you only have to call two functions ever.
+//
+
+typedef struct
+{
+ unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap
+ float xoff,yoff,xadvance;
+} stbtt_bakedchar;
+
+extern int stbtt_BakeFontBitmap(const unsigned char *data, int offset, // font location (use offset=0 for plain .ttf)
+ float pixel_height, // height of font in pixels
+ unsigned char *pixels, int pw, int ph, // bitmap to be filled in
+ int first_char, int num_chars, // characters to bake
+ stbtt_bakedchar *chardata); // you allocate this, it's num_chars long
+// if return is positive, the first unused row of the bitmap
+// if return is negative, returns the negative of the number of characters that fit
+// if return is 0, no characters fit and no rows were used
+// This uses a very crappy packing.
+
+typedef struct
+{
+ float x0,y0,s0,t0; // top-left
+ float x1,y1,s1,t1; // bottom-right
+} stbtt_aligned_quad;
+
+extern void stbtt_GetBakedQuad(stbtt_bakedchar *chardata, int pw, int ph, // same data as above
+ int char_index, // character to display
+ float *xpos, float *ypos, // pointers to current position in screen pixel space
+ stbtt_aligned_quad *q, // output: quad to draw
+ int opengl_fillrule); // true if opengl fill rule; false if DX9 or earlier
+// Call GetBakedQuad with char_index = 'character - first_char', and it
+// creates the quad you need to draw and advances the current position.
+//
+// The coordinate system used assumes y increases downwards.
+//
+// Characters will extend both above and below the current position;
+// see discussion of "BASELINE" above.
+//
+// It's inefficient; you might want to c&p it and optimize it.
+
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// NEW TEXTURE BAKING API
+//
+// This provides options for packing multiple fonts into one atlas, not
+// perfectly but better than nothing.
+
+typedef struct
+{
+ unsigned short x0,y0,x1,y1; // coordinates of bbox in bitmap
+ float xoff,yoff,xadvance;
+ float xoff2,yoff2;
+} stbtt_packedchar;
+
+typedef struct stbtt_pack_context stbtt_pack_context;
+typedef struct stbtt_fontinfo stbtt_fontinfo;
+
+extern int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int width, int height, int stride_in_bytes, int padding, void *alloc_context);
+// Initializes a packing context stored in the passed-in stbtt_pack_context.
+// Future calls using this context will pack characters into the bitmap passed
+// in here: a 1-channel bitmap that is weight x height. stride_in_bytes is
+// the distance from one row to the next (or 0 to mean they are packed tightly
+// together). "padding" is // the amount of padding to leave between each
+// character (normally you want '1' for bitmaps you'll use as textures with
+// bilinear filtering).
+//
+// Returns 0 on failure, 1 on success.
+
+extern void stbtt_PackEnd (stbtt_pack_context *spc);
+// Cleans up the packing context and frees all memory.
+
+#define STBTT_POINT_SIZE(x) (-(x))
+
+extern int stbtt_PackFontRange(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, float font_size,
+ int first_unicode_char_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range);
+// Creates character bitmaps from the font_index'th font found in fontdata (use
+// font_index=0 if you don't know what that is). It creates num_chars_in_range
+// bitmaps for characters with unicode values starting at first_unicode_char_in_range
+// and increasing. Data for how to render them is stored in chardata_for_range;
+// pass these to stbtt_GetPackedQuad to get back renderable quads.
+//
+// font_size is the full height of the character from ascender to descender,
+// as computed by stbtt_ScaleForPixelHeight. To use a point size as computed
+// by stbtt_ScaleForMappingEmToPixels, wrap the point size in STBTT_POINT_SIZE()
+// and pass that result as 'font_size':
+// ..., 20 , ... // font max minus min y is 20 pixels tall
+// ..., STBTT_POINT_SIZE(20), ... // 'M' is 20 pixels tall
+
+typedef struct
+{
+ float font_size;
+ int first_unicode_char_in_range;
+ int num_chars_in_range;
+ stbtt_packedchar *chardata_for_range; // output
+} stbtt_pack_range;
+
+extern int stbtt_PackFontRanges(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges);
+// Creates character bitmaps from multiple ranges of characters stored in
+// ranges. This will usually create a better-packed bitmap than multiple
+// calls to stbtt_PackFontRange.
+
+extern int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects);
+extern int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects);
+// Those functions are called by stbtt_PackFontRanges(). If you want to
+// pack multiple fonts or custom data into a same texture, you may copy
+// the contents of stbtt_PackFontRanges() and create a custom version
+// using those functions.
+
+extern void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample);
+// Oversampling a font increases the quality by allowing higher-quality subpixel
+// positioning, and is especially valuable at smaller text sizes.
+//
+// This function sets the amount of oversampling for all following calls to
+// stbtt_PackFontRange(s). The default (no oversampling) is achieved by
+// h_oversample=1, v_oversample=1. The total number of pixels required is
+// h_oversample*v_oversample larger than the default; for example, 2x2
+// oversampling requires 4x the storage of 1x1. For best results, render
+// oversampled textures with bilinear filtering. Look at the readme in
+// stb/tests/oversample for information about oversampled fonts
+
+extern void stbtt_GetPackedQuad(stbtt_packedchar *chardata, int pw, int ph, // same data as above
+ int char_index, // character to display
+ float *xpos, float *ypos, // pointers to current position in screen pixel space
+ stbtt_aligned_quad *q, // output: quad to draw
+ int align_to_integer);
+
+// this is an opaque structure that you shouldn't mess with which holds
+// all the context needed from PackBegin to PackEnd.
+struct stbtt_pack_context {
+ void *user_allocator_context;
+ void *pack_info;
+ int width;
+ int height;
+ int stride_in_bytes;
+ int padding;
+ unsigned int h_oversample, v_oversample;
+ unsigned char *pixels;
+ void *nodes;
+};
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// FONT LOADING
+//
+//
+
+extern int stbtt_GetFontOffsetForIndex(const unsigned char *data, int index);
+// Each .ttf/.ttc file may have more than one font. Each font has a sequential
+// index number starting from 0. Call this function to get the font offset for
+// a given index; it returns -1 if the index is out of range. A regular .ttf
+// file will only define one font and it always be at offset 0, so it will
+// return '0' for index 0, and -1 for all other indices. You can just skip
+// this step if you know it's that kind of font.
+
+
+// The following structure is defined publically so you can declare one on
+// the stack or as a global or etc, but you should treat it as opaque.
+typedef struct stbtt_fontinfo
+{
+ void * userdata;
+ unsigned char * data; // pointer to .ttf file
+ int fontstart; // offset of start of font
+
+ int numGlyphs; // number of glyphs, needed for range checking
+
+ int loca,head,glyf,hhea,hmtx,kern; // table locations as offset from start of .ttf
+ int index_map; // a cmap mapping for our chosen character encoding
+ int indexToLocFormat; // format needed to map from glyph index to glyph
+} stbtt_fontinfo;
+
+extern int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data, int offset);
+// Given an offset into the file that defines a font, this function builds
+// the necessary cached info for the rest of the system. You must allocate
+// the stbtt_fontinfo yourself, and stbtt_InitFont will fill it out. You don't
+// need to do anything special to free it, because the contents are pure
+// value data with no additional data structures. Returns 0 on failure.
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// CHARACTER TO GLYPH-INDEX CONVERSIOn
+
+int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint);
+// If you're going to perform multiple operations on the same character
+// and you want a speed-up, call this function with the character you're
+// going to process, then use glyph-based functions instead of the
+// codepoint-based functions.
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// CHARACTER PROPERTIES
+//
+
+extern float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float pixels);
+// computes a scale factor to produce a font whose "height" is 'pixels' tall.
+// Height is measured as the distance from the highest ascender to the lowest
+// descender; in other words, it's equivalent to calling stbtt_GetFontVMetrics
+// and computing:
+// scale = pixels / (ascent - descent)
+// so if you prefer to measure height by the ascent only, use a similar calculation.
+
+extern float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels);
+// computes a scale factor to produce a font whose EM size is mapped to
+// 'pixels' tall. This is probably what traditional APIs compute, but
+// I'm not positive.
+
+extern void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap);
+// ascent is the coordinate above the baseline the font extends; descent
+// is the coordinate below the baseline the font extends (i.e. it is typically negative)
+// lineGap is the spacing between one row's descent and the next row's ascent...
+// so you should advance the vertical position by "*ascent - *descent + *lineGap"
+// these are expressed in unscaled coordinates, so you must multiply by
+// the scale factor for a given size
+
+extern void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1);
+// the bounding box around all possible characters
+
+extern void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing);
+// leftSideBearing is the offset from the current horizontal position to the left edge of the character
+// advanceWidth is the offset from the current horizontal position to the next horizontal position
+// these are expressed in unscaled coordinates
+
+extern int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2);
+// an additional amount to add to the 'advance' value between ch1 and ch2
+
+extern int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1);
+// Gets the bounding box of the visible part of the glyph, in unscaled coordinates
+
+extern void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing);
+extern int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2);
+extern int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1);
+// as above, but takes one or more glyph indices for greater efficiency
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// GLYPH SHAPES (you probably don't need these, but they have to go before
+// the bitmaps for C declaration-order reasons)
+//
+
+#ifndef STBTT_vmove // you can predefine these to use different values (but why?)
+ enum {
+ STBTT_vmove=1,
+ STBTT_vline,
+ STBTT_vcurve
+ };
+#endif
+
+#ifndef stbtt_vertex // you can predefine this to use different values
+ // (we share this with other code at RAD)
+ #define stbtt_vertex_type short // can't use stbtt_int16 because that's not visible in the header file
+ typedef struct
+ {
+ stbtt_vertex_type x,y,cx,cy;
+ unsigned char type,padding;
+ } stbtt_vertex;
+#endif
+
+extern int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index);
+// returns non-zero if nothing is drawn for this glyph
+
+extern int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices);
+extern int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **vertices);
+// returns # of vertices and fills *vertices with the pointer to them
+// these are expressed in "unscaled" coordinates
+//
+// The shape is a series of countours. Each one starts with
+// a STBTT_moveto, then consists of a series of mixed
+// STBTT_lineto and STBTT_curveto segments. A lineto
+// draws a line from previous endpoint to its x,y; a curveto
+// draws a quadratic bezier from previous endpoint to
+// its x,y, using cx,cy as the bezier control point.
+
+extern void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *vertices);
+// frees the data allocated above
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// BITMAP RENDERING
+//
+
+extern void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata);
+// frees the bitmap allocated below
+
+extern unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff);
+// allocates a large-enough single-channel 8bpp bitmap and renders the
+// specified character/glyph at the specified scale into it, with
+// antialiasing. 0 is no coverage (transparent), 255 is fully covered (opaque).
+// *width & *height are filled out with the width & height of the bitmap,
+// which is stored left-to-right, top-to-bottom.
+//
+// xoff/yoff are the offset it pixel space from the glyph origin to the top-left of the bitmap
+
+extern unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff);
+// the same as stbtt_GetCodepoitnBitmap, but you can specify a subpixel
+// shift for the character
+
+extern void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint);
+// the same as stbtt_GetCodepointBitmap, but you pass in storage for the bitmap
+// in the form of 'output', with row spacing of 'out_stride' bytes. the bitmap
+// is clipped to out_w/out_h bytes. Call stbtt_GetCodepointBitmapBox to get the
+// width and height and positioning info for it first.
+
+extern void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint);
+// same as stbtt_MakeCodepointBitmap, but you can specify a subpixel
+// shift for the character
+
+extern void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1);
+// get the bbox of the bitmap centered around the glyph origin; so the
+// bitmap width is ix1-ix0, height is iy1-iy0, and location to place
+// the bitmap top left is (leftSideBearing*scale,iy0).
+// (Note that the bitmap uses y-increases-down, but the shape uses
+// y-increases-up, so CodepointBitmapBox and CodepointBox are inverted.)
+
+extern void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1);
+// same as stbtt_GetCodepointBitmapBox, but you can specify a subpixel
+// shift for the character
+
+// the following functions are equivalent to the above functions, but operate
+// on glyph indices instead of Unicode codepoints (for efficiency)
+extern unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff);
+extern unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff);
+extern void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph);
+extern void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph);
+extern void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1);
+extern void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1);
+
+
+// @TODO: don't expose this structure
+typedef struct
+{
+ int w,h,stride;
+ unsigned char *pixels;
+} stbtt__bitmap;
+
+extern void stbtt_Rasterize(stbtt__bitmap *result, float flatness_in_pixels, stbtt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, void *userdata);
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// Finding the right font...
+//
+// You should really just solve this offline, keep your own tables
+// of what font is what, and don't try to get it out of the .ttf file.
+// That's because getting it out of the .ttf file is really hard, because
+// the names in the file can appear in many possible encodings, in many
+// possible languages, and e.g. if you need a case-insensitive comparison,
+// the details of that depend on the encoding & language in a complex way
+// (actually underspecified in truetype, but also gigantic).
+//
+// But you can use the provided functions in two possible ways:
+// stbtt_FindMatchingFont() will use *case-sensitive* comparisons on
+// unicode-encoded names to try to find the font you want;
+// you can run this before calling stbtt_InitFont()
+//
+// stbtt_GetFontNameString() lets you get any of the various strings
+// from the file yourself and do your own comparisons on them.
+// You have to have called stbtt_InitFont() first.
+
+
+extern int stbtt_FindMatchingFont(const unsigned char *fontdata, const char *name, int flags);
+// returns the offset (not index) of the font that matches, or -1 if none
+// if you use STBTT_MACSTYLE_DONTCARE, use a font name like "Arial Bold".
+// if you use any other flag, use a font name like "Arial"; this checks
+// the 'macStyle' header field; i don't know if fonts set this consistently
+#define STBTT_MACSTYLE_DONTCARE 0
+#define STBTT_MACSTYLE_BOLD 1
+#define STBTT_MACSTYLE_ITALIC 2
+#define STBTT_MACSTYLE_UNDERSCORE 4
+#define STBTT_MACSTYLE_NONE 8 // <= not same as 0, this makes us check the bitfield is 0
+
+extern int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2);
+// returns 1/0 whether the first string interpreted as utf8 is identical to
+// the second string interpreted as big-endian utf16... useful for strings from next func
+
+extern const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID);
+// returns the string (which may be big-endian double byte, e.g. for unicode)
+// and puts the length in bytes in *length.
+//
+// some of the values for the IDs are below; for more see the truetype spec:
+// http://developer.apple.com/textfonts/TTRefMan/RM06/Chap6name.html
+// http://www.microsoft.com/typography/otspec/name.htm
+
+enum { // platformID
+ STBTT_PLATFORM_ID_UNICODE =0,
+ STBTT_PLATFORM_ID_MAC =1,
+ STBTT_PLATFORM_ID_ISO =2,
+ STBTT_PLATFORM_ID_MICROSOFT =3
+};
+
+enum { // encodingID for STBTT_PLATFORM_ID_UNICODE
+ STBTT_UNICODE_EID_UNICODE_1_0 =0,
+ STBTT_UNICODE_EID_UNICODE_1_1 =1,
+ STBTT_UNICODE_EID_ISO_10646 =2,
+ STBTT_UNICODE_EID_UNICODE_2_0_BMP=3,
+ STBTT_UNICODE_EID_UNICODE_2_0_FULL=4
+};
+
+enum { // encodingID for STBTT_PLATFORM_ID_MICROSOFT
+ STBTT_MS_EID_SYMBOL =0,
+ STBTT_MS_EID_UNICODE_BMP =1,
+ STBTT_MS_EID_SHIFTJIS =2,
+ STBTT_MS_EID_UNICODE_FULL =10
+};
+
+enum { // encodingID for STBTT_PLATFORM_ID_MAC; same as Script Manager codes
+ STBTT_MAC_EID_ROMAN =0, STBTT_MAC_EID_ARABIC =4,
+ STBTT_MAC_EID_JAPANESE =1, STBTT_MAC_EID_HEBREW =5,
+ STBTT_MAC_EID_CHINESE_TRAD =2, STBTT_MAC_EID_GREEK =6,
+ STBTT_MAC_EID_KOREAN =3, STBTT_MAC_EID_RUSSIAN =7
+};
+
+enum { // languageID for STBTT_PLATFORM_ID_MICROSOFT; same as LCID...
+ // problematic because there are e.g. 16 english LCIDs and 16 arabic LCIDs
+ STBTT_MS_LANG_ENGLISH =0x0409, STBTT_MS_LANG_ITALIAN =0x0410,
+ STBTT_MS_LANG_CHINESE =0x0804, STBTT_MS_LANG_JAPANESE =0x0411,
+ STBTT_MS_LANG_DUTCH =0x0413, STBTT_MS_LANG_KOREAN =0x0412,
+ STBTT_MS_LANG_FRENCH =0x040c, STBTT_MS_LANG_RUSSIAN =0x0419,
+ STBTT_MS_LANG_GERMAN =0x0407, STBTT_MS_LANG_SPANISH =0x0409,
+ STBTT_MS_LANG_HEBREW =0x040d, STBTT_MS_LANG_SWEDISH =0x041D
+};
+
+enum { // languageID for STBTT_PLATFORM_ID_MAC
+ STBTT_MAC_LANG_ENGLISH =0 , STBTT_MAC_LANG_JAPANESE =11,
+ STBTT_MAC_LANG_ARABIC =12, STBTT_MAC_LANG_KOREAN =23,
+ STBTT_MAC_LANG_DUTCH =4 , STBTT_MAC_LANG_RUSSIAN =32,
+ STBTT_MAC_LANG_FRENCH =1 , STBTT_MAC_LANG_SPANISH =6 ,
+ STBTT_MAC_LANG_GERMAN =2 , STBTT_MAC_LANG_SWEDISH =5 ,
+ STBTT_MAC_LANG_HEBREW =10, STBTT_MAC_LANG_CHINESE_SIMPLIFIED =33,
+ STBTT_MAC_LANG_ITALIAN =3 , STBTT_MAC_LANG_CHINESE_TRAD =19
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __STB_INCLUDE_STB_TRUETYPE_H__
+
+///////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////
+////
+//// IMPLEMENTATION
+////
+////
+
+#ifdef STB_TRUETYPE_IMPLEMENTATION
+
+#ifndef STBTT_MAX_OVERSAMPLE
+#define STBTT_MAX_OVERSAMPLE 8
+#endif
+
+typedef int stbtt__test_oversample_pow2[(STBTT_MAX_OVERSAMPLE & (STBTT_MAX_OVERSAMPLE-1)) == 0 ? 1 : -1];
+
+//////////////////////////////////////////////////////////////////////////
+//
+// accessors to parse data from file
+//
+
+// on platforms that don't allow misaligned reads, if we want to allow
+// truetype fonts that aren't padded to alignment, define ALLOW_UNALIGNED_TRUETYPE
+
+#define ttBYTE(p) (* (stbtt_uint8 *) (p))
+#define ttCHAR(p) (* (stbtt_int8 *) (p))
+#define ttFixed(p) ttLONG(p)
+
+#if defined(STB_TRUETYPE_BIGENDIAN) && !defined(ALLOW_UNALIGNED_TRUETYPE)
+
+ #define ttUSHORT(p) (* (stbtt_uint16 *) (p))
+ #define ttSHORT(p) (* (stbtt_int16 *) (p))
+ #define ttULONG(p) (* (stbtt_uint32 *) (p))
+ #define ttLONG(p) (* (stbtt_int32 *) (p))
+
+#else
+
+ stbtt_uint16 ttUSHORT(const stbtt_uint8 *p) { return p[0]*256 + p[1]; }
+ stbtt_int16 ttSHORT(const stbtt_uint8 *p) { return p[0]*256 + p[1]; }
+ stbtt_uint32 ttULONG(const stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; }
+ stbtt_int32 ttLONG(const stbtt_uint8 *p) { return (p[0]<<24) + (p[1]<<16) + (p[2]<<8) + p[3]; }
+
+#endif
+
+#define stbtt_tag4(p,c0,c1,c2,c3) ((p)[0] == (c0) && (p)[1] == (c1) && (p)[2] == (c2) && (p)[3] == (c3))
+#define stbtt_tag(p,str) stbtt_tag4(p,str[0],str[1],str[2],str[3])
+
+static int stbtt__isfont(const stbtt_uint8 *font)
+{
+ // check the version number
+ if (stbtt_tag4(font, '1',0,0,0)) return 1; // TrueType 1
+ if (stbtt_tag(font, "typ1")) return 1; // TrueType with type 1 font -- we don't support this!
+ if (stbtt_tag(font, "OTTO")) return 1; // OpenType with CFF
+ if (stbtt_tag4(font, 0,1,0,0)) return 1; // OpenType 1.0
+ return 0;
+}
+
+// @OPTIMIZE: binary search
+static stbtt_uint32 stbtt__find_table(stbtt_uint8 *data, stbtt_uint32 fontstart, const char *tag)
+{
+ stbtt_int32 num_tables = ttUSHORT(data+fontstart+4);
+ stbtt_uint32 tabledir = fontstart + 12;
+ stbtt_int32 i;
+ for (i=0; i < num_tables; ++i) {
+ stbtt_uint32 loc = tabledir + 16*i;
+ if (stbtt_tag(data+loc+0, tag))
+ return ttULONG(data+loc+8);
+ }
+ return 0;
+}
+
+int stbtt_GetFontOffsetForIndex(const unsigned char *font_collection, int index)
+{
+ // if it's just a font, there's only one valid index
+ if (stbtt__isfont(font_collection))
+ return index == 0 ? 0 : -1;
+
+ // check if it's a TTC
+ if (stbtt_tag(font_collection, "ttcf")) {
+ // version 1?
+ if (ttULONG(font_collection+4) == 0x00010000 || ttULONG(font_collection+4) == 0x00020000) {
+ stbtt_int32 n = ttLONG(font_collection+8);
+ if (index >= n)
+ return -1;
+ return ttULONG(font_collection+12+index*14);
+ }
+ }
+ return -1;
+}
+
+int stbtt_InitFont(stbtt_fontinfo *info, const unsigned char *data2, int fontstart)
+{
+ stbtt_uint8 *data = (stbtt_uint8 *) data2;
+ stbtt_uint32 cmap, t;
+ stbtt_int32 i,numTables;
+
+ info->data = data;
+ info->fontstart = fontstart;
+
+ cmap = stbtt__find_table(data, fontstart, "cmap"); // required
+ info->loca = stbtt__find_table(data, fontstart, "loca"); // required
+ info->head = stbtt__find_table(data, fontstart, "head"); // required
+ info->glyf = stbtt__find_table(data, fontstart, "glyf"); // required
+ info->hhea = stbtt__find_table(data, fontstart, "hhea"); // required
+ info->hmtx = stbtt__find_table(data, fontstart, "hmtx"); // required
+ info->kern = stbtt__find_table(data, fontstart, "kern"); // not required
+ if (!cmap || !info->loca || !info->head || !info->glyf || !info->hhea || !info->hmtx)
+ return 0;
+
+ t = stbtt__find_table(data, fontstart, "maxp");
+ if (t)
+ info->numGlyphs = ttUSHORT(data+t+4);
+ else
+ info->numGlyphs = 0xffff;
+
+ // find a cmap encoding table we understand *now* to avoid searching
+ // later. (todo: could make this installable)
+ // the same regardless of glyph.
+ numTables = ttUSHORT(data + cmap + 2);
+ info->index_map = 0;
+ for (i=0; i < numTables; ++i) {
+ stbtt_uint32 encoding_record = cmap + 4 + 8 * i;
+ // find an encoding we understand:
+ switch(ttUSHORT(data+encoding_record)) {
+ case STBTT_PLATFORM_ID_MICROSOFT:
+ switch (ttUSHORT(data+encoding_record+2)) {
+ case STBTT_MS_EID_UNICODE_BMP:
+ case STBTT_MS_EID_UNICODE_FULL:
+ // MS/Unicode
+ info->index_map = cmap + ttULONG(data+encoding_record+4);
+ break;
+ }
+ break;
+ case STBTT_PLATFORM_ID_UNICODE:
+ // Mac/iOS has these
+ // all the encodingIDs are unicode, so we don't bother to check it
+ info->index_map = cmap + ttULONG(data+encoding_record+4);
+ break;
+ }
+ }
+ if (info->index_map == 0)
+ return 0;
+
+ info->indexToLocFormat = ttUSHORT(data+info->head + 50);
+ return 1;
+}
+
+int stbtt_FindGlyphIndex(const stbtt_fontinfo *info, int unicode_codepoint)
+{
+ stbtt_uint8 *data = info->data;
+ stbtt_uint32 index_map = info->index_map;
+
+ stbtt_uint16 format = ttUSHORT(data + index_map + 0);
+ if (format == 0) { // apple byte encoding
+ stbtt_int32 bytes = ttUSHORT(data + index_map + 2);
+ if (unicode_codepoint < bytes-6)
+ return ttBYTE(data + index_map + 6 + unicode_codepoint);
+ return 0;
+ } else if (format == 6) {
+ stbtt_uint32 first = ttUSHORT(data + index_map + 6);
+ stbtt_uint32 count = ttUSHORT(data + index_map + 8);
+ if ((stbtt_uint32) unicode_codepoint >= first && (stbtt_uint32) unicode_codepoint < first+count)
+ return ttUSHORT(data + index_map + 10 + (unicode_codepoint - first)*2);
+ return 0;
+ } else if (format == 2) {
+ STBTT_assert(0); // @TODO: high-byte mapping for japanese/chinese/korean
+ return 0;
+ } else if (format == 4) { // standard mapping for windows fonts: binary search collection of ranges
+ stbtt_uint16 segcount = ttUSHORT(data+index_map+6) >> 1;
+ stbtt_uint16 searchRange = ttUSHORT(data+index_map+8) >> 1;
+ stbtt_uint16 entrySelector = ttUSHORT(data+index_map+10);
+ stbtt_uint16 rangeShift = ttUSHORT(data+index_map+12) >> 1;
+ stbtt_uint16 item, offset, start, end;
+
+ // do a binary search of the segments
+ stbtt_uint32 endCount = index_map + 14;
+ stbtt_uint32 search = endCount;
+
+ if (unicode_codepoint > 0xffff)
+ return 0;
+
+ // they lie from endCount .. endCount + segCount
+ // but searchRange is the nearest power of two, so...
+ if (unicode_codepoint >= ttUSHORT(data + search + rangeShift*2))
+ search += rangeShift*2;
+
+ // now decrement to bias correctly to find smallest
+ search -= 2;
+ while (entrySelector) {
+ searchRange >>= 1;
+ start = ttUSHORT(data + search + searchRange*2 + segcount*2 + 2);
+ end = ttUSHORT(data + search + searchRange*2);
+ if (unicode_codepoint > end)
+ search += searchRange*2;
+ --entrySelector;
+ }
+ search += 2;
+
+ item = (stbtt_uint16) ((search - endCount) >> 1);
+
+ STBTT_assert(unicode_codepoint <= ttUSHORT(data + endCount + 2*item));
+ start = ttUSHORT(data + index_map + 14 + segcount*2 + 2 + 2*item);
+ end = ttUSHORT(data + index_map + 14 + 2 + 2*item);
+ if (unicode_codepoint < start)
+ return 0;
+
+ offset = ttUSHORT(data + index_map + 14 + segcount*6 + 2 + 2*item);
+ if (offset == 0)
+ return (stbtt_uint16) (unicode_codepoint + ttSHORT(data + index_map + 14 + segcount*4 + 2 + 2*item));
+
+ return ttUSHORT(data + offset + (unicode_codepoint-start)*2 + index_map + 14 + segcount*6 + 2 + 2*item);
+ } else if (format == 12 || format == 13) {
+ stbtt_uint32 ngroups = ttULONG(data+index_map+12);
+ stbtt_int32 low,high;
+ low = 0; high = (stbtt_int32)ngroups;
+ // Binary search the right group.
+ while (low < high) {
+ stbtt_int32 mid = low + ((high-low) >> 1); // rounds down, so low <= mid < high
+ stbtt_uint32 start_char = ttULONG(data+index_map+16+mid*12);
+ stbtt_uint32 end_char = ttULONG(data+index_map+16+mid*12+4);
+ if ((stbtt_uint32) unicode_codepoint < start_char)
+ high = mid;
+ else if ((stbtt_uint32) unicode_codepoint > end_char)
+ low = mid+1;
+ else {
+ stbtt_uint32 start_glyph = ttULONG(data+index_map+16+mid*12+8);
+ if (format == 12)
+ return start_glyph + unicode_codepoint-start_char;
+ else // format == 13
+ return start_glyph;
+ }
+ }
+ return 0; // not found
+ }
+ // @TODO
+ STBTT_assert(0);
+ return 0;
+}
+
+int stbtt_GetCodepointShape(const stbtt_fontinfo *info, int unicode_codepoint, stbtt_vertex **vertices)
+{
+ return stbtt_GetGlyphShape(info, stbtt_FindGlyphIndex(info, unicode_codepoint), vertices);
+}
+
+static void stbtt_setvertex(stbtt_vertex *v, stbtt_uint8 type, stbtt_int32 x, stbtt_int32 y, stbtt_int32 cx, stbtt_int32 cy)
+{
+ v->type = type;
+ v->x = (stbtt_int16) x;
+ v->y = (stbtt_int16) y;
+ v->cx = (stbtt_int16) cx;
+ v->cy = (stbtt_int16) cy;
+}
+
+static int stbtt__GetGlyfOffset(const stbtt_fontinfo *info, int glyph_index)
+{
+ int g1,g2;
+
+ if (glyph_index >= info->numGlyphs) return -1; // glyph index out of range
+ if (info->indexToLocFormat >= 2) return -1; // unknown index->glyph map format
+
+ if (info->indexToLocFormat == 0) {
+ g1 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2) * 2;
+ g2 = info->glyf + ttUSHORT(info->data + info->loca + glyph_index * 2 + 2) * 2;
+ } else {
+ g1 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4);
+ g2 = info->glyf + ttULONG (info->data + info->loca + glyph_index * 4 + 4);
+ }
+
+ return g1==g2 ? -1 : g1; // if length is 0, return -1
+}
+
+int stbtt_GetGlyphBox(const stbtt_fontinfo *info, int glyph_index, int *x0, int *y0, int *x1, int *y1)
+{
+ int g = stbtt__GetGlyfOffset(info, glyph_index);
+ if (g < 0) return 0;
+
+ if (x0) *x0 = ttSHORT(info->data + g + 2);
+ if (y0) *y0 = ttSHORT(info->data + g + 4);
+ if (x1) *x1 = ttSHORT(info->data + g + 6);
+ if (y1) *y1 = ttSHORT(info->data + g + 8);
+ return 1;
+}
+
+int stbtt_GetCodepointBox(const stbtt_fontinfo *info, int codepoint, int *x0, int *y0, int *x1, int *y1)
+{
+ return stbtt_GetGlyphBox(info, stbtt_FindGlyphIndex(info,codepoint), x0,y0,x1,y1);
+}
+
+int stbtt_IsGlyphEmpty(const stbtt_fontinfo *info, int glyph_index)
+{
+ stbtt_int16 numberOfContours;
+ int g = stbtt__GetGlyfOffset(info, glyph_index);
+ if (g < 0) return 1;
+ numberOfContours = ttSHORT(info->data + g);
+ return numberOfContours == 0;
+}
+
+static int stbtt__close_shape(stbtt_vertex *vertices, int num_vertices, int was_off, int start_off,
+ stbtt_int32 sx, stbtt_int32 sy, stbtt_int32 scx, stbtt_int32 scy, stbtt_int32 cx, stbtt_int32 cy)
+{
+ if (start_off) {
+ if (was_off)
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+scx)>>1, (cy+scy)>>1, cx,cy);
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, sx,sy,scx,scy);
+ } else {
+ if (was_off)
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve,sx,sy,cx,cy);
+ else
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vline,sx,sy,0,0);
+ }
+ return num_vertices;
+}
+
+int stbtt_GetGlyphShape(const stbtt_fontinfo *info, int glyph_index, stbtt_vertex **pvertices)
+{
+ stbtt_int16 numberOfContours;
+ stbtt_uint8 *endPtsOfContours;
+ stbtt_uint8 *data = info->data;
+ stbtt_vertex *vertices=0;
+ int num_vertices=0;
+ int g = stbtt__GetGlyfOffset(info, glyph_index);
+
+ *pvertices = NULL;
+
+ if (g < 0) return 0;
+
+ numberOfContours = ttSHORT(data + g);
+
+ if (numberOfContours > 0) {
+ stbtt_uint8 flags=0,flagcount;
+ stbtt_int32 ins, i,j=0,m,n, next_move, was_off=0, off, start_off=0;
+ stbtt_int32 x,y,cx,cy,sx,sy, scx,scy;
+ stbtt_uint8 *points;
+ endPtsOfContours = (data + g + 10);
+ ins = ttUSHORT(data + g + 10 + numberOfContours * 2);
+ points = data + g + 10 + numberOfContours * 2 + 2 + ins;
+
+ n = 1+ttUSHORT(endPtsOfContours + numberOfContours*2-2);
+
+ m = n + 2*numberOfContours; // a loose bound on how many vertices we might need
+ vertices = (stbtt_vertex *) STBTT_malloc(m * sizeof(vertices[0]), info->userdata);
+ if (vertices == 0)
+ return 0;
+
+ next_move = 0;
+ flagcount=0;
+
+ // in first pass, we load uninterpreted data into the allocated array
+ // above, shifted to the end of the array so we won't overwrite it when
+ // we create our final data starting from the front
+
+ off = m - n; // starting offset for uninterpreted data, regardless of how m ends up being calculated
+
+ // first load flags
+
+ for (i=0; i < n; ++i) {
+ if (flagcount == 0) {
+ flags = *points++;
+ if (flags & 8)
+ flagcount = *points++;
+ } else
+ --flagcount;
+ vertices[off+i].type = flags;
+ }
+
+ // now load x coordinates
+ x=0;
+ for (i=0; i < n; ++i) {
+ flags = vertices[off+i].type;
+ if (flags & 2) {
+ stbtt_int16 dx = *points++;
+ x += (flags & 16) ? dx : -dx; // ???
+ } else {
+ if (!(flags & 16)) {
+ x = x + (stbtt_int16) (points[0]*256 + points[1]);
+ points += 2;
+ }
+ }
+ vertices[off+i].x = (stbtt_int16) x;
+ }
+
+ // now load y coordinates
+ y=0;
+ for (i=0; i < n; ++i) {
+ flags = vertices[off+i].type;
+ if (flags & 4) {
+ stbtt_int16 dy = *points++;
+ y += (flags & 32) ? dy : -dy; // ???
+ } else {
+ if (!(flags & 32)) {
+ y = y + (stbtt_int16) (points[0]*256 + points[1]);
+ points += 2;
+ }
+ }
+ vertices[off+i].y = (stbtt_int16) y;
+ }
+
+ // now convert them to our format
+ num_vertices=0;
+ sx = sy = cx = cy = scx = scy = 0;
+ for (i=0; i < n; ++i) {
+ flags = vertices[off+i].type;
+ x = (stbtt_int16) vertices[off+i].x;
+ y = (stbtt_int16) vertices[off+i].y;
+
+ if (next_move == i) {
+ if (i != 0)
+ num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy);
+
+ // now start the new one
+ start_off = !(flags & 1);
+ if (start_off) {
+ // if we start off with an off-curve point, then when we need to find a point on the curve
+ // where we can start, and we need to save some state for when we wraparound.
+ scx = x;
+ scy = y;
+ if (!(vertices[off+i+1].type & 1)) {
+ // next point is also a curve point, so interpolate an on-point curve
+ sx = (x + (stbtt_int32) vertices[off+i+1].x) >> 1;
+ sy = (y + (stbtt_int32) vertices[off+i+1].y) >> 1;
+ } else {
+ // otherwise just use the next point as our start point
+ sx = (stbtt_int32) vertices[off+i+1].x;
+ sy = (stbtt_int32) vertices[off+i+1].y;
+ ++i; // we're using point i+1 as the starting point, so skip it
+ }
+ } else {
+ sx = x;
+ sy = y;
+ }
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vmove,sx,sy,0,0);
+ was_off = 0;
+ next_move = 1 + ttUSHORT(endPtsOfContours+j*2);
+ ++j;
+ } else {
+ if (!(flags & 1)) { // if it's a curve
+ if (was_off) // two off-curve control points in a row means interpolate an on-curve midpoint
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, (cx+x)>>1, (cy+y)>>1, cx, cy);
+ cx = x;
+ cy = y;
+ was_off = 1;
+ } else {
+ if (was_off)
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vcurve, x,y, cx, cy);
+ else
+ stbtt_setvertex(&vertices[num_vertices++], STBTT_vline, x,y,0,0);
+ was_off = 0;
+ }
+ }
+ }
+ num_vertices = stbtt__close_shape(vertices, num_vertices, was_off, start_off, sx,sy,scx,scy,cx,cy);
+ } else if (numberOfContours == -1) {
+ // Compound shapes.
+ int more = 1;
+ stbtt_uint8 *comp = data + g + 10;
+ num_vertices = 0;
+ vertices = 0;
+ while (more) {
+ stbtt_uint16 flags, gidx;
+ int comp_num_verts = 0, i;
+ stbtt_vertex *comp_verts = 0, *tmp = 0;
+ float mtx[6] = {1,0,0,1,0,0}, m, n;
+
+ flags = ttSHORT(comp); comp+=2;
+ gidx = ttSHORT(comp); comp+=2;
+
+ if (flags & 2) { // XY values
+ if (flags & 1) { // shorts
+ mtx[4] = ttSHORT(comp); comp+=2;
+ mtx[5] = ttSHORT(comp); comp+=2;
+ } else {
+ mtx[4] = ttCHAR(comp); comp+=1;
+ mtx[5] = ttCHAR(comp); comp+=1;
+ }
+ }
+ else {
+ // @TODO handle matching point
+ STBTT_assert(0);
+ }
+ if (flags & (1<<3)) { // WE_HAVE_A_SCALE
+ mtx[0] = mtx[3] = ttSHORT(comp)/16384.0f; comp+=2;
+ mtx[1] = mtx[2] = 0;
+ } else if (flags & (1<<6)) { // WE_HAVE_AN_X_AND_YSCALE
+ mtx[0] = ttSHORT(comp)/16384.0f; comp+=2;
+ mtx[1] = mtx[2] = 0;
+ mtx[3] = ttSHORT(comp)/16384.0f; comp+=2;
+ } else if (flags & (1<<7)) { // WE_HAVE_A_TWO_BY_TWO
+ mtx[0] = ttSHORT(comp)/16384.0f; comp+=2;
+ mtx[1] = ttSHORT(comp)/16384.0f; comp+=2;
+ mtx[2] = ttSHORT(comp)/16384.0f; comp+=2;
+ mtx[3] = ttSHORT(comp)/16384.0f; comp+=2;
+ }
+
+ // Find transformation scales.
+ m = (float) STBTT_sqrt(mtx[0]*mtx[0] + mtx[1]*mtx[1]);
+ n = (float) STBTT_sqrt(mtx[2]*mtx[2] + mtx[3]*mtx[3]);
+
+ // Get indexed glyph.
+ comp_num_verts = stbtt_GetGlyphShape(info, gidx, &comp_verts);
+ if (comp_num_verts > 0) {
+ // Transform vertices.
+ for (i = 0; i < comp_num_verts; ++i) {
+ stbtt_vertex* v = &comp_verts[i];
+ stbtt_vertex_type x,y;
+ x=v->x; y=v->y;
+ v->x = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4]));
+ v->y = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5]));
+ x=v->cx; y=v->cy;
+ v->cx = (stbtt_vertex_type)(m * (mtx[0]*x + mtx[2]*y + mtx[4]));
+ v->cy = (stbtt_vertex_type)(n * (mtx[1]*x + mtx[3]*y + mtx[5]));
+ }
+ // Append vertices.
+ tmp = (stbtt_vertex*)STBTT_malloc((num_vertices+comp_num_verts)*sizeof(stbtt_vertex), info->userdata);
+ if (!tmp) {
+ if (vertices) STBTT_free(vertices, info->userdata);
+ if (comp_verts) STBTT_free(comp_verts, info->userdata);
+ return 0;
+ }
+ if (num_vertices > 0) STBTT_memcpy(tmp, vertices, num_vertices*sizeof(stbtt_vertex));
+ STBTT_memcpy(tmp+num_vertices, comp_verts, comp_num_verts*sizeof(stbtt_vertex));
+ if (vertices) STBTT_free(vertices, info->userdata);
+ vertices = tmp;
+ STBTT_free(comp_verts, info->userdata);
+ num_vertices += comp_num_verts;
+ }
+ // More components ?
+ more = flags & (1<<5);
+ }
+ } else if (numberOfContours < 0) {
+ // @TODO other compound variations?
+ STBTT_assert(0);
+ } else {
+ // numberOfCounters == 0, do nothing
+ }
+
+ *pvertices = vertices;
+ return num_vertices;
+}
+
+void stbtt_GetGlyphHMetrics(const stbtt_fontinfo *info, int glyph_index, int *advanceWidth, int *leftSideBearing)
+{
+ stbtt_uint16 numOfLongHorMetrics = ttUSHORT(info->data+info->hhea + 34);
+ if (glyph_index < numOfLongHorMetrics) {
+ if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*glyph_index);
+ if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*glyph_index + 2);
+ } else {
+ if (advanceWidth) *advanceWidth = ttSHORT(info->data + info->hmtx + 4*(numOfLongHorMetrics-1));
+ if (leftSideBearing) *leftSideBearing = ttSHORT(info->data + info->hmtx + 4*numOfLongHorMetrics + 2*(glyph_index - numOfLongHorMetrics));
+ }
+}
+
+int stbtt_GetGlyphKernAdvance(const stbtt_fontinfo *info, int glyph1, int glyph2)
+{
+ stbtt_uint8 *data = info->data + info->kern;
+ stbtt_uint32 needle, straw;
+ int l, r, m;
+
+ // we only look at the first table. it must be 'horizontal' and format 0.
+ if (!info->kern)
+ return 0;
+ if (ttUSHORT(data+2) < 1) // number of tables, need at least 1
+ return 0;
+ if (ttUSHORT(data+8) != 1) // horizontal flag must be set in format
+ return 0;
+
+ l = 0;
+ r = ttUSHORT(data+10) - 1;
+ needle = glyph1 << 16 | glyph2;
+ while (l <= r) {
+ m = (l + r) >> 1;
+ straw = ttULONG(data+18+(m*6)); // note: unaligned read
+ if (needle < straw)
+ r = m - 1;
+ else if (needle > straw)
+ l = m + 1;
+ else
+ return ttSHORT(data+22+(m*6));
+ }
+ return 0;
+}
+
+int stbtt_GetCodepointKernAdvance(const stbtt_fontinfo *info, int ch1, int ch2)
+{
+ if (!info->kern) // if no kerning table, don't waste time looking up both codepoint->glyphs
+ return 0;
+ return stbtt_GetGlyphKernAdvance(info, stbtt_FindGlyphIndex(info,ch1), stbtt_FindGlyphIndex(info,ch2));
+}
+
+void stbtt_GetCodepointHMetrics(const stbtt_fontinfo *info, int codepoint, int *advanceWidth, int *leftSideBearing)
+{
+ stbtt_GetGlyphHMetrics(info, stbtt_FindGlyphIndex(info,codepoint), advanceWidth, leftSideBearing);
+}
+
+void stbtt_GetFontVMetrics(const stbtt_fontinfo *info, int *ascent, int *descent, int *lineGap)
+{
+ if (ascent ) *ascent = ttSHORT(info->data+info->hhea + 4);
+ if (descent) *descent = ttSHORT(info->data+info->hhea + 6);
+ if (lineGap) *lineGap = ttSHORT(info->data+info->hhea + 8);
+}
+
+void stbtt_GetFontBoundingBox(const stbtt_fontinfo *info, int *x0, int *y0, int *x1, int *y1)
+{
+ *x0 = ttSHORT(info->data + info->head + 36);
+ *y0 = ttSHORT(info->data + info->head + 38);
+ *x1 = ttSHORT(info->data + info->head + 40);
+ *y1 = ttSHORT(info->data + info->head + 42);
+}
+
+float stbtt_ScaleForPixelHeight(const stbtt_fontinfo *info, float height)
+{
+ int fheight = ttSHORT(info->data + info->hhea + 4) - ttSHORT(info->data + info->hhea + 6);
+ return (float) height / fheight;
+}
+
+float stbtt_ScaleForMappingEmToPixels(const stbtt_fontinfo *info, float pixels)
+{
+ int unitsPerEm = ttUSHORT(info->data + info->head + 18);
+ return pixels / unitsPerEm;
+}
+
+void stbtt_FreeShape(const stbtt_fontinfo *info, stbtt_vertex *v)
+{
+ STBTT_free(v, info->userdata);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// antialiasing software rasterizer
+//
+
+void stbtt_GetGlyphBitmapBoxSubpixel(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y,float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1)
+{
+ int x0,y0,x1,y1;
+ if (!stbtt_GetGlyphBox(font, glyph, &x0,&y0,&x1,&y1)) {
+ // e.g. space character
+ if (ix0) *ix0 = 0;
+ if (iy0) *iy0 = 0;
+ if (ix1) *ix1 = 0;
+ if (iy1) *iy1 = 0;
+ } else {
+ // move to integral bboxes (treating pixels as little squares, what pixels get touched)?
+ if (ix0) *ix0 = STBTT_ifloor( x0 * scale_x + shift_x);
+ if (iy0) *iy0 = STBTT_ifloor(-y1 * scale_y + shift_y);
+ if (ix1) *ix1 = STBTT_iceil ( x1 * scale_x + shift_x);
+ if (iy1) *iy1 = STBTT_iceil (-y0 * scale_y + shift_y);
+ }
+}
+
+void stbtt_GetGlyphBitmapBox(const stbtt_fontinfo *font, int glyph, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1)
+{
+ stbtt_GetGlyphBitmapBoxSubpixel(font, glyph, scale_x, scale_y,0.0f,0.0f, ix0, iy0, ix1, iy1);
+}
+
+void stbtt_GetCodepointBitmapBoxSubpixel(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, float shift_x, float shift_y, int *ix0, int *iy0, int *ix1, int *iy1)
+{
+ stbtt_GetGlyphBitmapBoxSubpixel(font, stbtt_FindGlyphIndex(font,codepoint), scale_x, scale_y,shift_x,shift_y, ix0,iy0,ix1,iy1);
+}
+
+void stbtt_GetCodepointBitmapBox(const stbtt_fontinfo *font, int codepoint, float scale_x, float scale_y, int *ix0, int *iy0, int *ix1, int *iy1)
+{
+ stbtt_GetCodepointBitmapBoxSubpixel(font, codepoint, scale_x, scale_y,0.0f,0.0f, ix0,iy0,ix1,iy1);
+}
+
+typedef struct stbtt__edge {
+ float x0,y0, x1,y1;
+ int invert;
+} stbtt__edge;
+
+typedef struct stbtt__active_edge
+{
+ int x,dx;
+ float ey;
+ struct stbtt__active_edge *next;
+ int valid;
+} stbtt__active_edge;
+
+#define FIXSHIFT 10
+#define FIX (1 << FIXSHIFT)
+#define FIXMASK (FIX-1)
+
+static stbtt__active_edge *new_active(stbtt__edge *e, int off_x, float start_point, void *userdata)
+{
+ stbtt__active_edge *z = (stbtt__active_edge *) STBTT_malloc(sizeof(*z), userdata); // @TODO: make a pool of these!!!
+ float dxdy = (e->x1 - e->x0) / (e->y1 - e->y0);
+ STBTT_assert(e->y0 <= start_point);
+ if (!z) return z;
+ // round dx down to avoid going too far
+ if (dxdy < 0)
+ z->dx = -STBTT_ifloor(FIX * -dxdy);
+ else
+ z->dx = STBTT_ifloor(FIX * dxdy);
+ z->x = STBTT_ifloor(FIX * (e->x0 + dxdy * (start_point - e->y0)));
+ z->x -= off_x * FIX;
+ z->ey = e->y1;
+ z->next = 0;
+ z->valid = e->invert ? 1 : -1;
+ return z;
+}
+
+// note: this routine clips fills that extend off the edges... ideally this
+// wouldn't happen, but it could happen if the truetype glyph bounding boxes
+// are wrong, or if the user supplies a too-small bitmap
+static void stbtt__fill_active_edges(unsigned char *scanline, int len, stbtt__active_edge *e, int max_weight)
+{
+ // non-zero winding fill
+ int x0=0, w=0;
+
+ while (e) {
+ if (w == 0) {
+ // if we're currently at zero, we need to record the edge start point
+ x0 = e->x; w += e->valid;
+ } else {
+ int x1 = e->x; w += e->valid;
+ // if we went to zero, we need to draw
+ if (w == 0) {
+ int i = x0 >> FIXSHIFT;
+ int j = x1 >> FIXSHIFT;
+
+ if (i < len && j >= 0) {
+ if (i == j) {
+ // x0,x1 are the same pixel, so compute combined coverage
+ scanline[i] = scanline[i] + (stbtt_uint8) ((x1 - x0) * max_weight >> FIXSHIFT);
+ } else {
+ if (i >= 0) // add antialiasing for x0
+ scanline[i] = scanline[i] + (stbtt_uint8) (((FIX - (x0 & FIXMASK)) * max_weight) >> FIXSHIFT);
+ else
+ i = -1; // clip
+
+ if (j < len) // add antialiasing for x1
+ scanline[j] = scanline[j] + (stbtt_uint8) (((x1 & FIXMASK) * max_weight) >> FIXSHIFT);
+ else
+ j = len; // clip
+
+ for (++i; i < j; ++i) // fill pixels between x0 and x1
+ scanline[i] = scanline[i] + (stbtt_uint8) max_weight;
+ }
+ }
+ }
+ }
+
+ e = e->next;
+ }
+}
+
+static void stbtt__rasterize_sorted_edges(stbtt__bitmap *result, stbtt__edge *e, int n, int vsubsample, int off_x, int off_y, void *userdata)
+{
+ stbtt__active_edge *active = NULL;
+ int y,j=0;
+ int max_weight = (255 / vsubsample); // weight per vertical scanline
+ int s; // vertical subsample index
+ unsigned char scanline_data[512], *scanline;
+
+ if (result->w > 512)
+ scanline = (unsigned char *) STBTT_malloc(result->w, userdata);
+ else
+ scanline = scanline_data;
+
+ y = off_y * vsubsample;
+ e[n].y0 = (off_y + result->h) * (float) vsubsample + 1;
+
+ while (j < result->h) {
+ STBTT_memset(scanline, 0, result->w);
+ for (s=0; s < vsubsample; ++s) {
+ // find center of pixel for this scanline
+ float scan_y = y + 0.5f;
+ stbtt__active_edge **step = &active;
+
+ // update all active edges;
+ // remove all active edges that terminate before the center of this scanline
+ while (*step) {
+ stbtt__active_edge * z = *step;
+ if (z->ey <= scan_y) {
+ *step = z->next; // delete from list
+ STBTT_assert(z->valid);
+ z->valid = 0;
+ STBTT_free(z, userdata);
+ } else {
+ z->x += z->dx; // advance to position for current scanline
+ step = &((*step)->next); // advance through list
+ }
+ }
+
+ // resort the list if needed
+ for(;;) {
+ int changed=0;
+ step = &active;
+ while (*step && (*step)->next) {
+ if ((*step)->x > (*step)->next->x) {
+ stbtt__active_edge *t = *step;
+ stbtt__active_edge *q = t->next;
+
+ t->next = q->next;
+ q->next = t;
+ *step = q;
+ changed = 1;
+ }
+ step = &(*step)->next;
+ }
+ if (!changed) break;
+ }
+
+ // insert all edges that start before the center of this scanline -- omit ones that also end on this scanline
+ while (e->y0 <= scan_y) {
+ if (e->y1 > scan_y) {
+ stbtt__active_edge *z = new_active(e, off_x, scan_y, userdata);
+ // find insertion point
+ if (active == NULL)
+ active = z;
+ else if (z->x < active->x) {
+ // insert at front
+ z->next = active;
+ active = z;
+ } else {
+ // find thing to insert AFTER
+ stbtt__active_edge *p = active;
+ while (p->next && p->next->x < z->x)
+ p = p->next;
+ // at this point, p->next->x is NOT < z->x
+ z->next = p->next;
+ p->next = z;
+ }
+ }
+ ++e;
+ }
+
+ // now process all active edges in XOR fashion
+ if (active)
+ stbtt__fill_active_edges(scanline, result->w, active, max_weight);
+
+ ++y;
+ }
+ STBTT_memcpy(result->pixels + j * result->stride, scanline, result->w);
+ ++j;
+ }
+
+ while (active) {
+ stbtt__active_edge *z = active;
+ active = active->next;
+ STBTT_free(z, userdata);
+ }
+
+ if (scanline != scanline_data)
+ STBTT_free(scanline, userdata);
+}
+
+static int stbtt__edge_compare(const void *p, const void *q)
+{
+ stbtt__edge *a = (stbtt__edge *) p;
+ stbtt__edge *b = (stbtt__edge *) q;
+
+ if (a->y0 < b->y0) return -1;
+ if (a->y0 > b->y0) return 1;
+ return 0;
+}
+
+typedef struct
+{
+ float x,y;
+} stbtt__point;
+
+static void stbtt__rasterize(stbtt__bitmap *result, stbtt__point *pts, int *wcount, int windings, float scale_x, float scale_y, float shift_x, float shift_y, int off_x, int off_y, int invert, void *userdata)
+{
+ float y_scale_inv = invert ? -scale_y : scale_y;
+ stbtt__edge *e;
+ int n,i,j,k,m;
+ int vsubsample = result->h < 8 ? 15 : 5;
+ // vsubsample should divide 255 evenly; otherwise we won't reach full opacity
+
+ // now we have to blow out the windings into explicit edge lists
+ n = 0;
+ for (i=0; i < windings; ++i)
+ n += wcount[i];
+
+ e = (stbtt__edge *) STBTT_malloc(sizeof(*e) * (n+1), userdata); // add an extra one as a sentinel
+ if (e == 0) return;
+ n = 0;
+
+ m=0;
+ for (i=0; i < windings; ++i) {
+ stbtt__point *p = pts + m;
+ m += wcount[i];
+ j = wcount[i]-1;
+ for (k=0; k < wcount[i]; j=k++) {
+ int a=k,b=j;
+ // skip the edge if horizontal
+ if (p[j].y == p[k].y)
+ continue;
+ // add edge from j to k to the list
+ e[n].invert = 0;
+ if (invert ? p[j].y > p[k].y : p[j].y < p[k].y) {
+ e[n].invert = 1;
+ a=j,b=k;
+ }
+ e[n].x0 = p[a].x * scale_x + shift_x;
+ e[n].y0 = (p[a].y * y_scale_inv + shift_y) * vsubsample;
+ e[n].x1 = p[b].x * scale_x + shift_x;
+ e[n].y1 = (p[b].y * y_scale_inv + shift_y) * vsubsample;
+ ++n;
+ }
+ }
+
+ // now sort the edges by their highest point (should snap to integer, and then by x)
+ STBTT_sort(e, n, sizeof(e[0]), stbtt__edge_compare);
+
+ // now, traverse the scanlines and find the intersections on each scanline, use xor winding rule
+ stbtt__rasterize_sorted_edges(result, e, n, vsubsample, off_x, off_y, userdata);
+
+ STBTT_free(e, userdata);
+}
+
+static void stbtt__add_point(stbtt__point *points, int n, float x, float y)
+{
+ if (!points) return; // during first pass, it's unallocated
+ points[n].x = x;
+ points[n].y = y;
+}
+
+// tesselate until threshhold p is happy... @TODO warped to compensate for non-linear stretching
+static int stbtt__tesselate_curve(stbtt__point *points, int *num_points, float x0, float y0, float x1, float y1, float x2, float y2, float objspace_flatness_squared, int n)
+{
+ // midpoint
+ float mx = (x0 + 2*x1 + x2)/4;
+ float my = (y0 + 2*y1 + y2)/4;
+ // versus directly drawn line
+ float dx = (x0+x2)/2 - mx;
+ float dy = (y0+y2)/2 - my;
+ if (n > 16) // 65536 segments on one curve better be enough!
+ return 1;
+ if (dx*dx+dy*dy > objspace_flatness_squared) { // half-pixel error allowed... need to be smaller if AA
+ stbtt__tesselate_curve(points, num_points, x0,y0, (x0+x1)/2.0f,(y0+y1)/2.0f, mx,my, objspace_flatness_squared,n+1);
+ stbtt__tesselate_curve(points, num_points, mx,my, (x1+x2)/2.0f,(y1+y2)/2.0f, x2,y2, objspace_flatness_squared,n+1);
+ } else {
+ stbtt__add_point(points, *num_points,x2,y2);
+ *num_points = *num_points+1;
+ }
+ return 1;
+}
+
+// returns number of contours
+stbtt__point *stbtt_FlattenCurves(stbtt_vertex *vertices, int num_verts, float objspace_flatness, int **contour_lengths, int *num_contours, void *userdata)
+{
+ stbtt__point *points=0;
+ int num_points=0;
+
+ float objspace_flatness_squared = objspace_flatness * objspace_flatness;
+ int i,n=0,start=0, pass;
+
+ // count how many "moves" there are to get the contour count
+ for (i=0; i < num_verts; ++i)
+ if (vertices[i].type == STBTT_vmove)
+ ++n;
+
+ *num_contours = n;
+ if (n == 0) return 0;
+
+ *contour_lengths = (int *) STBTT_malloc(sizeof(**contour_lengths) * n, userdata);
+
+ if (*contour_lengths == 0) {
+ *num_contours = 0;
+ return 0;
+ }
+
+ // make two passes through the points so we don't need to realloc
+ for (pass=0; pass < 2; ++pass) {
+ float x=0,y=0;
+ if (pass == 1) {
+ points = (stbtt__point *) STBTT_malloc(num_points * sizeof(points[0]), userdata);
+ if (points == NULL) goto error;
+ }
+ num_points = 0;
+ n= -1;
+ for (i=0; i < num_verts; ++i) {
+ switch (vertices[i].type) {
+ case STBTT_vmove:
+ // start the next contour
+ if (n >= 0)
+ (*contour_lengths)[n] = num_points - start;
+ ++n;
+ start = num_points;
+
+ x = vertices[i].x, y = vertices[i].y;
+ stbtt__add_point(points, num_points++, x,y);
+ break;
+ case STBTT_vline:
+ x = vertices[i].x, y = vertices[i].y;
+ stbtt__add_point(points, num_points++, x, y);
+ break;
+ case STBTT_vcurve:
+ stbtt__tesselate_curve(points, &num_points, x,y,
+ vertices[i].cx, vertices[i].cy,
+ vertices[i].x, vertices[i].y,
+ objspace_flatness_squared, 0);
+ x = vertices[i].x, y = vertices[i].y;
+ break;
+ }
+ }
+ (*contour_lengths)[n] = num_points - start;
+ }
+
+ return points;
+error:
+ STBTT_free(points, userdata);
+ STBTT_free(*contour_lengths, userdata);
+ *contour_lengths = 0;
+ *num_contours = 0;
+ return NULL;
+}
+
+void stbtt_Rasterize(stbtt__bitmap *result, float flatness_in_pixels, stbtt_vertex *vertices, int num_verts, float scale_x, float scale_y, float shift_x, float shift_y, int x_off, int y_off, int invert, void *userdata)
+{
+ float scale = scale_x > scale_y ? scale_y : scale_x;
+ int winding_count, *winding_lengths;
+ stbtt__point *windings = stbtt_FlattenCurves(vertices, num_verts, flatness_in_pixels / scale, &winding_lengths, &winding_count, userdata);
+ if (windings) {
+ stbtt__rasterize(result, windings, winding_lengths, winding_count, scale_x, scale_y, shift_x, shift_y, x_off, y_off, invert, userdata);
+ STBTT_free(winding_lengths, userdata);
+ STBTT_free(windings, userdata);
+ }
+}
+
+void stbtt_FreeBitmap(unsigned char *bitmap, void *userdata)
+{
+ STBTT_free(bitmap, userdata);
+}
+
+unsigned char *stbtt_GetGlyphBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int glyph, int *width, int *height, int *xoff, int *yoff)
+{
+ int ix0,iy0,ix1,iy1;
+ stbtt__bitmap gbm;
+ stbtt_vertex *vertices;
+ int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices);
+
+ if (scale_x == 0) scale_x = scale_y;
+ if (scale_y == 0) {
+ if (scale_x == 0) return NULL;
+ scale_y = scale_x;
+ }
+
+ stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,&ix1,&iy1);
+
+ // now we get the size
+ gbm.w = (ix1 - ix0);
+ gbm.h = (iy1 - iy0);
+ gbm.pixels = NULL; // in case we error
+
+ if (width ) *width = gbm.w;
+ if (height) *height = gbm.h;
+ if (xoff ) *xoff = ix0;
+ if (yoff ) *yoff = iy0;
+
+ if (gbm.w && gbm.h) {
+ gbm.pixels = (unsigned char *) STBTT_malloc(gbm.w * gbm.h, info->userdata);
+ if (gbm.pixels) {
+ gbm.stride = gbm.w;
+
+ stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0, iy0, 1, info->userdata);
+ }
+ }
+ STBTT_free(vertices, info->userdata);
+ return gbm.pixels;
+}
+
+unsigned char *stbtt_GetGlyphBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int glyph, int *width, int *height, int *xoff, int *yoff)
+{
+ return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y, 0.0f, 0.0f, glyph, width, height, xoff, yoff);
+}
+
+void stbtt_MakeGlyphBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int glyph)
+{
+ int ix0,iy0;
+ stbtt_vertex *vertices;
+ int num_verts = stbtt_GetGlyphShape(info, glyph, &vertices);
+ stbtt__bitmap gbm;
+
+ stbtt_GetGlyphBitmapBoxSubpixel(info, glyph, scale_x, scale_y, shift_x, shift_y, &ix0,&iy0,0,0);
+ gbm.pixels = output;
+ gbm.w = out_w;
+ gbm.h = out_h;
+ gbm.stride = out_stride;
+
+ if (gbm.w && gbm.h)
+ stbtt_Rasterize(&gbm, 0.35f, vertices, num_verts, scale_x, scale_y, shift_x, shift_y, ix0,iy0, 1, info->userdata);
+
+ STBTT_free(vertices, info->userdata);
+}
+
+void stbtt_MakeGlyphBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int glyph)
+{
+ stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, glyph);
+}
+
+unsigned char *stbtt_GetCodepointBitmapSubpixel(const stbtt_fontinfo *info, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint, int *width, int *height, int *xoff, int *yoff)
+{
+ return stbtt_GetGlyphBitmapSubpixel(info, scale_x, scale_y,shift_x,shift_y, stbtt_FindGlyphIndex(info,codepoint), width,height,xoff,yoff);
+}
+
+void stbtt_MakeCodepointBitmapSubpixel(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, float shift_x, float shift_y, int codepoint)
+{
+ stbtt_MakeGlyphBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, shift_x, shift_y, stbtt_FindGlyphIndex(info,codepoint));
+}
+
+unsigned char *stbtt_GetCodepointBitmap(const stbtt_fontinfo *info, float scale_x, float scale_y, int codepoint, int *width, int *height, int *xoff, int *yoff)
+{
+ return stbtt_GetCodepointBitmapSubpixel(info, scale_x, scale_y, 0.0f,0.0f, codepoint, width,height,xoff,yoff);
+}
+
+void stbtt_MakeCodepointBitmap(const stbtt_fontinfo *info, unsigned char *output, int out_w, int out_h, int out_stride, float scale_x, float scale_y, int codepoint)
+{
+ stbtt_MakeCodepointBitmapSubpixel(info, output, out_w, out_h, out_stride, scale_x, scale_y, 0.0f,0.0f, codepoint);
+}
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// bitmap baking
+//
+// This is SUPER-CRAPPY packing to keep source code small
+
+extern int stbtt_BakeFontBitmap(const unsigned char *data, int offset, // font location (use offset=0 for plain .ttf)
+ float pixel_height, // height of font in pixels
+ unsigned char *pixels, int pw, int ph, // bitmap to be filled in
+ int first_char, int num_chars, // characters to bake
+ stbtt_bakedchar *chardata)
+{
+ float scale;
+ int x,y,bottom_y, i;
+ stbtt_fontinfo f;
+ if (!stbtt_InitFont(&f, data, offset))
+ return -1;
+ STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels
+ x=y=1;
+ bottom_y = 1;
+
+ scale = stbtt_ScaleForPixelHeight(&f, pixel_height);
+
+ for (i=0; i < num_chars; ++i) {
+ int advance, lsb, x0,y0,x1,y1,gw,gh;
+ int g = stbtt_FindGlyphIndex(&f, first_char + i);
+ stbtt_GetGlyphHMetrics(&f, g, &advance, &lsb);
+ stbtt_GetGlyphBitmapBox(&f, g, scale,scale, &x0,&y0,&x1,&y1);
+ gw = x1-x0;
+ gh = y1-y0;
+ if (x + gw + 1 >= pw)
+ y = bottom_y, x = 1; // advance to next row
+ if (y + gh + 1 >= ph) // check if it fits vertically AFTER potentially moving to next row
+ return -i;
+ STBTT_assert(x+gw < pw);
+ STBTT_assert(y+gh < ph);
+ stbtt_MakeGlyphBitmap(&f, pixels+x+y*pw, gw,gh,pw, scale,scale, g);
+ chardata[i].x0 = (stbtt_int16) x;
+ chardata[i].y0 = (stbtt_int16) y;
+ chardata[i].x1 = (stbtt_int16) (x + gw);
+ chardata[i].y1 = (stbtt_int16) (y + gh);
+ chardata[i].xadvance = scale * advance;
+ chardata[i].xoff = (float) x0;
+ chardata[i].yoff = (float) y0;
+ x = x + gw + 1;
+ if (y+gh+1 > bottom_y)
+ bottom_y = y+gh+1;
+ }
+ return bottom_y;
+}
+
+void stbtt_GetBakedQuad(stbtt_bakedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int opengl_fillrule)
+{
+ float d3d_bias = opengl_fillrule ? 0 : -0.5f;
+ float ipw = 1.0f / pw, iph = 1.0f / ph;
+ stbtt_bakedchar *b = chardata + char_index;
+ int round_x = STBTT_ifloor((*xpos + b->xoff) + 0.5);
+ int round_y = STBTT_ifloor((*ypos + b->yoff) + 0.5);
+
+ q->x0 = round_x + d3d_bias;
+ q->y0 = round_y + d3d_bias;
+ q->x1 = round_x + b->x1 - b->x0 + d3d_bias;
+ q->y1 = round_y + b->y1 - b->y0 + d3d_bias;
+
+ q->s0 = b->x0 * ipw;
+ q->t0 = b->y0 * iph;
+ q->s1 = b->x1 * ipw;
+ q->t1 = b->y1 * iph;
+
+ *xpos += b->xadvance;
+}
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// rectangle packing replacement routines if you don't have stb_rect_pack.h
+//
+
+#ifndef STB_RECT_PACK_VERSION
+#ifdef _MSC_VER
+#define STBTT__NOTUSED(v) (void)(v)
+#else
+#define STBTT__NOTUSED(v) (void)sizeof(v)
+#endif
+
+typedef int stbrp_coord;
+
+////////////////////////////////////////////////////////////////////////////////////
+// //
+// //
+// COMPILER WARNING ?!?!? //
+// //
+// //
+// if you get a compile warning due to these symbols being defined more than //
+// once, move #include "stb_rect_pack.h" before #include "stb_truetype.h" //
+// //
+////////////////////////////////////////////////////////////////////////////////////
+
+typedef struct
+{
+ int width,height;
+ int x,y,bottom_y;
+} stbrp_context;
+
+typedef struct
+{
+ unsigned char x;
+} stbrp_node;
+
+typedef struct
+{
+ stbrp_coord x,y;
+ int id,w,h,was_packed;
+} stbrp_rect;
+
+static void stbrp_init_target(stbrp_context *con, int pw, int ph, stbrp_node *nodes, int num_nodes)
+{
+ con->width = pw;
+ con->height = ph;
+ con->x = 0;
+ con->y = 0;
+ con->bottom_y = 0;
+ STBTT__NOTUSED(nodes);
+ STBTT__NOTUSED(num_nodes);
+}
+
+static void stbrp_pack_rects(stbrp_context *con, stbrp_rect *rects, int num_rects)
+{
+ int i;
+ for (i=0; i < num_rects; ++i) {
+ if (con->x + rects[i].w > con->width) {
+ con->x = 0;
+ con->y = con->bottom_y;
+ }
+ if (con->y + rects[i].h > con->height)
+ break;
+ rects[i].x = con->x;
+ rects[i].y = con->y;
+ rects[i].was_packed = 1;
+ con->x += rects[i].w;
+ if (con->y + rects[i].h > con->bottom_y)
+ con->bottom_y = con->y + rects[i].h;
+ }
+ for ( ; i < num_rects; ++i)
+ rects[i].was_packed = 0;
+}
+#endif
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// bitmap baking
+//
+// This is SUPER-AWESOME (tm Ryan Gordon) packing using stb_rect_pack.h. If
+// stb_rect_pack.h isn't available, it uses the BakeFontBitmap strategy.
+
+int stbtt_PackBegin(stbtt_pack_context *spc, unsigned char *pixels, int pw, int ph, int stride_in_bytes, int padding, void *alloc_context)
+{
+ stbrp_context *context = (stbrp_context *) STBTT_malloc(sizeof(*context) ,alloc_context);
+ int num_nodes = pw - padding;
+ stbrp_node *nodes = (stbrp_node *) STBTT_malloc(sizeof(*nodes ) * num_nodes,alloc_context);
+
+ if (context == NULL || nodes == NULL) {
+ if (context != NULL) STBTT_free(context, alloc_context);
+ if (nodes != NULL) STBTT_free(nodes , alloc_context);
+ return 0;
+ }
+
+ spc->user_allocator_context = alloc_context;
+ spc->width = pw;
+ spc->height = ph;
+ spc->pixels = pixels;
+ spc->pack_info = context;
+ spc->nodes = nodes;
+ spc->padding = padding;
+ spc->stride_in_bytes = stride_in_bytes != 0 ? stride_in_bytes : pw;
+ spc->h_oversample = 1;
+ spc->v_oversample = 1;
+
+ stbrp_init_target(context, pw-padding, ph-padding, nodes, num_nodes);
+
+ if (pixels)
+ STBTT_memset(pixels, 0, pw*ph); // background of 0 around pixels
+
+ return 1;
+}
+
+void stbtt_PackEnd (stbtt_pack_context *spc)
+{
+ STBTT_free(spc->nodes , spc->user_allocator_context);
+ STBTT_free(spc->pack_info, spc->user_allocator_context);
+}
+
+void stbtt_PackSetOversampling(stbtt_pack_context *spc, unsigned int h_oversample, unsigned int v_oversample)
+{
+ STBTT_assert(h_oversample <= STBTT_MAX_OVERSAMPLE);
+ STBTT_assert(v_oversample <= STBTT_MAX_OVERSAMPLE);
+ if (h_oversample <= STBTT_MAX_OVERSAMPLE)
+ spc->h_oversample = h_oversample;
+ if (v_oversample <= STBTT_MAX_OVERSAMPLE)
+ spc->v_oversample = v_oversample;
+}
+
+#define STBTT__OVER_MASK (STBTT_MAX_OVERSAMPLE-1)
+
+static void stbtt__h_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width)
+{
+ unsigned char buffer[STBTT_MAX_OVERSAMPLE];
+ int safe_w = w - kernel_width;
+ int j;
+ for (j=0; j < h; ++j) {
+ int i;
+ unsigned int total;
+ memset(buffer, 0, kernel_width);
+
+ total = 0;
+
+ // make kernel_width a constant in common cases so compiler can optimize out the divide
+ switch (kernel_width) {
+ case 2:
+ for (i=0; i <= safe_w; ++i) {
+ total += pixels[i] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i];
+ pixels[i] = (unsigned char) (total / 2);
+ }
+ break;
+ case 3:
+ for (i=0; i <= safe_w; ++i) {
+ total += pixels[i] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i];
+ pixels[i] = (unsigned char) (total / 3);
+ }
+ break;
+ case 4:
+ for (i=0; i <= safe_w; ++i) {
+ total += pixels[i] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i];
+ pixels[i] = (unsigned char) (total / 4);
+ }
+ break;
+ default:
+ for (i=0; i <= safe_w; ++i) {
+ total += pixels[i] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i];
+ pixels[i] = (unsigned char) (total / kernel_width);
+ }
+ break;
+ }
+
+ for (; i < w; ++i) {
+ STBTT_assert(pixels[i] == 0);
+ total -= buffer[i & STBTT__OVER_MASK];
+ pixels[i] = (unsigned char) (total / kernel_width);
+ }
+
+ pixels += stride_in_bytes;
+ }
+}
+
+static void stbtt__v_prefilter(unsigned char *pixels, int w, int h, int stride_in_bytes, unsigned int kernel_width)
+{
+ unsigned char buffer[STBTT_MAX_OVERSAMPLE];
+ int safe_h = h - kernel_width;
+ int j;
+ for (j=0; j < w; ++j) {
+ int i;
+ unsigned int total;
+ memset(buffer, 0, kernel_width);
+
+ total = 0;
+
+ // make kernel_width a constant in common cases so compiler can optimize out the divide
+ switch (kernel_width) {
+ case 2:
+ for (i=0; i <= safe_h; ++i) {
+ total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes];
+ pixels[i*stride_in_bytes] = (unsigned char) (total / 2);
+ }
+ break;
+ case 3:
+ for (i=0; i <= safe_h; ++i) {
+ total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes];
+ pixels[i*stride_in_bytes] = (unsigned char) (total / 3);
+ }
+ break;
+ case 4:
+ for (i=0; i <= safe_h; ++i) {
+ total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes];
+ pixels[i*stride_in_bytes] = (unsigned char) (total / 4);
+ }
+ break;
+ default:
+ for (i=0; i <= safe_h; ++i) {
+ total += pixels[i*stride_in_bytes] - buffer[i & STBTT__OVER_MASK];
+ buffer[(i+kernel_width) & STBTT__OVER_MASK] = pixels[i*stride_in_bytes];
+ pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width);
+ }
+ break;
+ }
+
+ for (; i < h; ++i) {
+ STBTT_assert(pixels[i*stride_in_bytes] == 0);
+ total -= buffer[i & STBTT__OVER_MASK];
+ pixels[i*stride_in_bytes] = (unsigned char) (total / kernel_width);
+ }
+
+ pixels += 1;
+ }
+}
+
+static float stbtt__oversample_shift(int oversample)
+{
+ if (!oversample)
+ return 0.0f;
+
+ // The prefilter is a box filter of width "oversample",
+ // which shifts phase by (oversample - 1)/2 pixels in
+ // oversampled space. We want to shift in the opposite
+ // direction to counter this.
+ return (float)-(oversample - 1) / (2.0f * (float)oversample);
+}
+
+// rects array must be big enough to accommodate all characters in the given ranges
+int stbtt_PackFontRangesGatherRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects)
+{
+ int i,j,k;
+
+ k=0;
+ for (i=0; i < num_ranges; ++i) {
+ float fh = ranges[i].font_size;
+ float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh);
+ for (j=0; j < ranges[i].num_chars_in_range; ++j) {
+ int x0,y0,x1,y1;
+ int glyph = stbtt_FindGlyphIndex(info,ranges[i].first_unicode_char_in_range + j);
+ if (glyph) {
+ stbtt_GetGlyphBitmapBoxSubpixel(info,glyph,
+ scale * spc->h_oversample,
+ scale * spc->v_oversample,
+ 0,0,
+ &x0,&y0,&x1,&y1);
+ rects[k].w = (stbrp_coord) (x1-x0 + spc->padding + spc->h_oversample-1);
+ rects[k].h = (stbrp_coord) (y1-y0 + spc->padding + spc->v_oversample-1);
+ } else {
+ rects[k].was_packed = false;
+ }
+ ++k;
+ }
+ }
+
+ return k;
+}
+
+// rects array must be big enough to accommodate all characters in the given ranges
+int stbtt_PackFontRangesRenderIntoRects(stbtt_pack_context *spc, stbtt_fontinfo *info, stbtt_pack_range *ranges, int num_ranges, stbrp_rect *rects)
+{
+ float recip_h = 1.0f / spc->h_oversample;
+ float recip_v = 1.0f / spc->v_oversample;
+ float sub_x = stbtt__oversample_shift(spc->h_oversample);
+ float sub_y = stbtt__oversample_shift(spc->v_oversample);
+ int i,j,k, return_value = 1;
+
+ k = 0;
+ for (i=0; i < num_ranges; ++i) {
+ float fh = ranges[i].font_size;
+ float scale = fh > 0 ? stbtt_ScaleForPixelHeight(info, fh) : stbtt_ScaleForMappingEmToPixels(info, -fh);
+ for (j=0; j < ranges[i].num_chars_in_range; ++j) {
+ stbrp_rect *r = &rects[k];
+ if (r->was_packed) {
+ stbtt_packedchar *bc = &ranges[i].chardata_for_range[j];
+ int advance, lsb, x0,y0,x1,y1;
+ int glyph = stbtt_FindGlyphIndex(info, ranges[i].first_unicode_char_in_range + j);
+ stbrp_coord pad = (stbrp_coord) spc->padding;
+
+ // pad on left and top
+ r->x += pad;
+ r->y += pad;
+ r->w -= pad;
+ r->h -= pad;
+ stbtt_GetGlyphHMetrics(info, glyph, &advance, &lsb);
+ stbtt_GetGlyphBitmapBox(info, glyph,
+ scale * spc->h_oversample,
+ scale * spc->v_oversample,
+ &x0,&y0,&x1,&y1);
+ stbtt_MakeGlyphBitmapSubpixel(info,
+ spc->pixels + r->x + r->y*spc->stride_in_bytes,
+ r->w - spc->h_oversample+1,
+ r->h - spc->v_oversample+1,
+ spc->stride_in_bytes,
+ scale * spc->h_oversample,
+ scale * spc->v_oversample,
+ 0,0,
+ glyph);
+
+ if (spc->h_oversample > 1)
+ stbtt__h_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes,
+ r->w, r->h, spc->stride_in_bytes,
+ spc->h_oversample);
+
+ if (spc->v_oversample > 1)
+ stbtt__v_prefilter(spc->pixels + r->x + r->y*spc->stride_in_bytes,
+ r->w, r->h, spc->stride_in_bytes,
+ spc->v_oversample);
+
+ bc->x0 = (stbtt_int16) r->x;
+ bc->y0 = (stbtt_int16) r->y;
+ bc->x1 = (stbtt_int16) (r->x + r->w);
+ bc->y1 = (stbtt_int16) (r->y + r->h);
+ bc->xadvance = scale * advance;
+ bc->xoff = (float) x0 * recip_h + sub_x;
+ bc->yoff = (float) y0 * recip_v + sub_y;
+ bc->xoff2 = (x0 + r->w) * recip_h + sub_x;
+ bc->yoff2 = (y0 + r->h) * recip_v + sub_y;
+ } else {
+ return_value = 0; // if any fail, report failure
+ }
+
+ ++k;
+ }
+ }
+
+ return return_value;
+}
+
+int stbtt_PackFontRanges(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, stbtt_pack_range *ranges, int num_ranges)
+{
+ stbtt_fontinfo info;
+ int i,j,n, return_value = 1;
+ stbrp_context *context = (stbrp_context *) spc->pack_info;
+ stbrp_rect *rects;
+
+ // flag all characters as NOT packed
+ for (i=0; i < num_ranges; ++i)
+ for (j=0; j < ranges[i].num_chars_in_range; ++j)
+ ranges[i].chardata_for_range[j].x0 =
+ ranges[i].chardata_for_range[j].y0 =
+ ranges[i].chardata_for_range[j].x1 =
+ ranges[i].chardata_for_range[j].y1 = 0;
+
+ n = 0;
+ for (i=0; i < num_ranges; ++i)
+ n += ranges[i].num_chars_in_range;
+
+ rects = (stbrp_rect *) STBTT_malloc(sizeof(*rects) * n, spc->user_allocator_context);
+ if (rects == NULL)
+ return 0;
+
+ stbtt_InitFont(&info, fontdata, stbtt_GetFontOffsetForIndex(fontdata,font_index));
+
+ n = stbtt_PackFontRangesGatherRects(spc, &info, ranges, num_ranges, rects);
+
+ stbrp_pack_rects(context, rects, n);
+
+ return_value = stbtt_PackFontRangesRenderIntoRects(spc, &info, ranges, num_ranges, rects);
+
+ return return_value;
+}
+
+int stbtt_PackFontRange(stbtt_pack_context *spc, unsigned char *fontdata, int font_index, float font_size,
+ int first_unicode_char_in_range, int num_chars_in_range, stbtt_packedchar *chardata_for_range)
+{
+ stbtt_pack_range range;
+ range.first_unicode_char_in_range = first_unicode_char_in_range;
+ range.num_chars_in_range = num_chars_in_range;
+ range.chardata_for_range = chardata_for_range;
+ range.font_size = font_size;
+ return stbtt_PackFontRanges(spc, fontdata, font_index, &range, 1);
+}
+
+void stbtt_GetPackedQuad(stbtt_packedchar *chardata, int pw, int ph, int char_index, float *xpos, float *ypos, stbtt_aligned_quad *q, int align_to_integer)
+{
+ float ipw = 1.0f / pw, iph = 1.0f / ph;
+ stbtt_packedchar *b = chardata + char_index;
+
+ if (align_to_integer) {
+ float x = (float) STBTT_ifloor((*xpos + b->xoff) + 0.5);
+ float y = (float) STBTT_ifloor((*ypos + b->yoff) + 0.5);
+ q->x0 = x;
+ q->y0 = y;
+ q->x1 = x + b->xoff2 - b->xoff;
+ q->y1 = y + b->yoff2 - b->yoff;
+ } else {
+ q->x0 = *xpos + b->xoff;
+ q->y0 = *ypos + b->yoff;
+ q->x1 = *xpos + b->xoff2;
+ q->y1 = *ypos + b->yoff2;
+ }
+
+ q->s0 = b->x0 * ipw;
+ q->t0 = b->y0 * iph;
+ q->s1 = b->x1 * ipw;
+ q->t1 = b->y1 * iph;
+
+ *xpos += b->xadvance;
+}
+
+
+//////////////////////////////////////////////////////////////////////////////
+//
+// font name matching -- recommended not to use this
+//
+
+// check if a utf8 string contains a prefix which is the utf16 string; if so return length of matching utf8 string
+static stbtt_int32 stbtt__CompareUTF8toUTF16_bigendian_prefix(const stbtt_uint8 *s1, stbtt_int32 len1, const stbtt_uint8 *s2, stbtt_int32 len2)
+{
+ stbtt_int32 i=0;
+
+ // convert utf16 to utf8 and compare the results while converting
+ while (len2) {
+ stbtt_uint16 ch = s2[0]*256 + s2[1];
+ if (ch < 0x80) {
+ if (i >= len1) return -1;
+ if (s1[i++] != ch) return -1;
+ } else if (ch < 0x800) {
+ if (i+1 >= len1) return -1;
+ if (s1[i++] != 0xc0 + (ch >> 6)) return -1;
+ if (s1[i++] != 0x80 + (ch & 0x3f)) return -1;
+ } else if (ch >= 0xd800 && ch < 0xdc00) {
+ stbtt_uint32 c;
+ stbtt_uint16 ch2 = s2[2]*256 + s2[3];
+ if (i+3 >= len1) return -1;
+ c = ((ch - 0xd800) << 10) + (ch2 - 0xdc00) + 0x10000;
+ if (s1[i++] != 0xf0 + (c >> 18)) return -1;
+ if (s1[i++] != 0x80 + ((c >> 12) & 0x3f)) return -1;
+ if (s1[i++] != 0x80 + ((c >> 6) & 0x3f)) return -1;
+ if (s1[i++] != 0x80 + ((c ) & 0x3f)) return -1;
+ s2 += 2; // plus another 2 below
+ len2 -= 2;
+ } else if (ch >= 0xdc00 && ch < 0xe000) {
+ return -1;
+ } else {
+ if (i+2 >= len1) return -1;
+ if (s1[i++] != 0xe0 + (ch >> 12)) return -1;
+ if (s1[i++] != 0x80 + ((ch >> 6) & 0x3f)) return -1;
+ if (s1[i++] != 0x80 + ((ch ) & 0x3f)) return -1;
+ }
+ s2 += 2;
+ len2 -= 2;
+ }
+ return i;
+}
+
+int stbtt_CompareUTF8toUTF16_bigendian(const char *s1, int len1, const char *s2, int len2)
+{
+ return len1 == stbtt__CompareUTF8toUTF16_bigendian_prefix((const stbtt_uint8*) s1, len1, (const stbtt_uint8*) s2, len2);
+}
+
+// returns results in whatever encoding you request... but note that 2-byte encodings
+// will be BIG-ENDIAN... use stbtt_CompareUTF8toUTF16_bigendian() to compare
+const char *stbtt_GetFontNameString(const stbtt_fontinfo *font, int *length, int platformID, int encodingID, int languageID, int nameID)
+{
+ stbtt_int32 i,count,stringOffset;
+ stbtt_uint8 *fc = font->data;
+ stbtt_uint32 offset = font->fontstart;
+ stbtt_uint32 nm = stbtt__find_table(fc, offset, "name");
+ if (!nm) return NULL;
+
+ count = ttUSHORT(fc+nm+2);
+ stringOffset = nm + ttUSHORT(fc+nm+4);
+ for (i=0; i < count; ++i) {
+ stbtt_uint32 loc = nm + 6 + 12 * i;
+ if (platformID == ttUSHORT(fc+loc+0) && encodingID == ttUSHORT(fc+loc+2)
+ && languageID == ttUSHORT(fc+loc+4) && nameID == ttUSHORT(fc+loc+6)) {
+ *length = ttUSHORT(fc+loc+8);
+ return (const char *) (fc+stringOffset+ttUSHORT(fc+loc+10));
+ }
+ }
+ return NULL;
+}
+
+static int stbtt__matchpair(stbtt_uint8 *fc, stbtt_uint32 nm, stbtt_uint8 *name, stbtt_int32 nlen, stbtt_int32 target_id, stbtt_int32 next_id)
+{
+ stbtt_int32 i;
+ stbtt_int32 count = ttUSHORT(fc+nm+2);
+ stbtt_int32 stringOffset = nm + ttUSHORT(fc+nm+4);
+
+ for (i=0; i < count; ++i) {
+ stbtt_uint32 loc = nm + 6 + 12 * i;
+ stbtt_int32 id = ttUSHORT(fc+loc+6);
+ if (id == target_id) {
+ // find the encoding
+ stbtt_int32 platform = ttUSHORT(fc+loc+0), encoding = ttUSHORT(fc+loc+2), language = ttUSHORT(fc+loc+4);
+
+ // is this a Unicode encoding?
+ if (platform == 0 || (platform == 3 && encoding == 1) || (platform == 3 && encoding == 10)) {
+ stbtt_int32 slen = ttUSHORT(fc+loc+8);
+ stbtt_int32 off = ttUSHORT(fc+loc+10);
+
+ // check if there's a prefix match
+ stbtt_int32 matchlen = stbtt__CompareUTF8toUTF16_bigendian_prefix(name, nlen, fc+stringOffset+off,slen);
+ if (matchlen >= 0) {
+ // check for target_id+1 immediately following, with same encoding & language
+ if (i+1 < count && ttUSHORT(fc+loc+12+6) == next_id && ttUSHORT(fc+loc+12) == platform && ttUSHORT(fc+loc+12+2) == encoding && ttUSHORT(fc+loc+12+4) == language) {
+ slen = ttUSHORT(fc+loc+12+8);
+ off = ttUSHORT(fc+loc+12+10);
+ if (slen == 0) {
+ if (matchlen == nlen)
+ return 1;
+ } else if (matchlen < nlen && name[matchlen] == ' ') {
+ ++matchlen;
+ if (stbtt_CompareUTF8toUTF16_bigendian((char*) (name+matchlen), nlen-matchlen, (char*)(fc+stringOffset+off),slen))
+ return 1;
+ }
+ } else {
+ // if nothing immediately following
+ if (matchlen == nlen)
+ return 1;
+ }
+ }
+ }
+
+ // @TODO handle other encodings
+ }
+ }
+ return 0;
+}
+
+static int stbtt__matches(stbtt_uint8 *fc, stbtt_uint32 offset, stbtt_uint8 *name, stbtt_int32 flags)
+{
+ stbtt_int32 nlen = (stbtt_int32) STBTT_strlen((char *) name);
+ stbtt_uint32 nm,hd;
+ if (!stbtt__isfont(fc+offset)) return 0;
+
+ // check italics/bold/underline flags in macStyle...
+ if (flags) {
+ hd = stbtt__find_table(fc, offset, "head");
+ if ((ttUSHORT(fc+hd+44) & 7) != (flags & 7)) return 0;
+ }
+
+ nm = stbtt__find_table(fc, offset, "name");
+ if (!nm) return 0;
+
+ if (flags) {
+ // if we checked the macStyle flags, then just check the family and ignore the subfamily
+ if (stbtt__matchpair(fc, nm, name, nlen, 16, -1)) return 1;
+ if (stbtt__matchpair(fc, nm, name, nlen, 1, -1)) return 1;
+ if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1;
+ } else {
+ if (stbtt__matchpair(fc, nm, name, nlen, 16, 17)) return 1;
+ if (stbtt__matchpair(fc, nm, name, nlen, 1, 2)) return 1;
+ if (stbtt__matchpair(fc, nm, name, nlen, 3, -1)) return 1;
+ }
+
+ return 0;
+}
+
+int stbtt_FindMatchingFont(const unsigned char *font_collection, const char *name_utf8, stbtt_int32 flags)
+{
+ stbtt_int32 i;
+ for (i=0;;++i) {
+ stbtt_int32 off = stbtt_GetFontOffsetForIndex(font_collection, i);
+ if (off < 0) return off;
+ if (stbtt__matches((stbtt_uint8 *) font_collection, off, (stbtt_uint8*) name_utf8, flags))
+ return off;
+ }
+}
+
+#endif // STB_TRUETYPE_IMPLEMENTATION