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https://github.com/thunderbrewhq/thunderbrew
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58 lines
2.5 KiB
C
58 lines
2.5 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "SDL_internal.h"
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#ifndef SDL_pixels_c_h_
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#define SDL_pixels_c_h_
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// Useful functions and variables from SDL_pixel.c
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#include "SDL_blit.h"
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// Pixel format functions
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extern void SDL_Get8888AlphaMaskAndShift(const SDL_PixelFormatDetails *fmt, Uint32 *mask, Uint32 *shift);
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extern SDL_Colorspace SDL_GetDefaultColorspaceForFormat(SDL_PixelFormat pixel_format);
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extern void SDL_QuitPixelFormatDetails(void);
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// Colorspace conversion functions
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extern float SDL_sRGBtoLinear(float v);
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extern float SDL_sRGBfromLinear(float v);
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extern float SDL_PQtoNits(float v);
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extern float SDL_PQfromNits(float v);
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extern const float *SDL_GetYCbCRtoRGBConversionMatrix(SDL_Colorspace colorspace, int w, int h, int bits_per_pixel);
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extern const float *SDL_GetColorPrimariesConversionMatrix(SDL_ColorPrimaries src, SDL_ColorPrimaries dst);
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extern void SDL_ConvertColorPrimaries(float *fR, float *fG, float *fB, const float *matrix);
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// Blit mapping functions
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extern bool SDL_ValidateMap(SDL_Surface *src, SDL_Surface *dst);
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extern void SDL_InvalidateMap(SDL_BlitMap *map);
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extern bool SDL_MapSurface(SDL_Surface *src, SDL_Surface *dst);
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// Miscellaneous functions
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extern void SDL_DitherPalette(SDL_Palette *palette);
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extern Uint8 SDL_FindColor(const SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
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extern Uint8 SDL_LookupRGBAColor(SDL_HashTable *palette_map, Uint32 pixel, const SDL_Palette *pal);
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extern void SDL_DetectPalette(const SDL_Palette *pal, bool *is_opaque, bool *has_alpha_channel);
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extern SDL_Surface *SDL_DuplicatePixels(int width, int height, SDL_PixelFormat format, SDL_Colorspace colorspace, void *pixels, int pitch);
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#endif // SDL_pixels_c_h_
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