/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2011 Sam Lantinga This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA Sam Lantinga slouken@libsdl.org */ /** * \file SDL_pixels.h * * Header for the enumerated pixel format definitions. */ #ifndef _SDL_pixels_h #define _SDL_pixels_h #include "begin_code.h" /* Set up for C function definitions, even when using C++ */ #ifdef __cplusplus /* *INDENT-OFF* */ extern "C" { /* *INDENT-ON* */ #endif /** * \name Transparency definitions * * These define alpha as the opacity of a surface. */ /*@{*/ #define SDL_ALPHA_OPAQUE 255 #define SDL_ALPHA_TRANSPARENT 0 /*@}*/ /** Pixel type. */ enum { SDL_PIXELTYPE_UNKNOWN, SDL_PIXELTYPE_INDEX1, SDL_PIXELTYPE_INDEX4, SDL_PIXELTYPE_INDEX8, SDL_PIXELTYPE_PACKED8, SDL_PIXELTYPE_PACKED16, SDL_PIXELTYPE_PACKED32, SDL_PIXELTYPE_ARRAYU8, SDL_PIXELTYPE_ARRAYU16, SDL_PIXELTYPE_ARRAYU32, SDL_PIXELTYPE_ARRAYF16, SDL_PIXELTYPE_ARRAYF32 }; /** Bitmap pixel order, high bit -> low bit. */ enum { SDL_BITMAPORDER_NONE, SDL_BITMAPORDER_4321, SDL_BITMAPORDER_1234 }; /** Packed component order, high bit -> low bit. */ enum { SDL_PACKEDORDER_NONE, SDL_PACKEDORDER_XRGB, SDL_PACKEDORDER_RGBX, SDL_PACKEDORDER_ARGB, SDL_PACKEDORDER_RGBA, SDL_PACKEDORDER_XBGR, SDL_PACKEDORDER_BGRX, SDL_PACKEDORDER_ABGR, SDL_PACKEDORDER_BGRA }; /** Array component order, low byte -> high byte. */ enum { SDL_ARRAYORDER_NONE, SDL_ARRAYORDER_RGB, SDL_ARRAYORDER_RGBA, SDL_ARRAYORDER_ARGB, SDL_ARRAYORDER_BGR, SDL_ARRAYORDER_BGRA, SDL_ARRAYORDER_ABGR }; /** Packed component layout. */ enum { SDL_PACKEDLAYOUT_NONE, SDL_PACKEDLAYOUT_332, SDL_PACKEDLAYOUT_4444, SDL_PACKEDLAYOUT_1555, SDL_PACKEDLAYOUT_5551, SDL_PACKEDLAYOUT_565, SDL_PACKEDLAYOUT_8888, SDL_PACKEDLAYOUT_2101010, SDL_PACKEDLAYOUT_1010102 }; #define SDL_DEFINE_PIXELFOURCC(A, B, C, D) SDL_FOURCC(A, B, C, D) #define SDL_DEFINE_PIXELFORMAT(type, order, layout, bits, bytes) \ ((1 << 31) | ((type) << 24) | ((order) << 20) | ((layout) << 16) | \ ((bits) << 8) | ((bytes) << 0)) #define SDL_PIXELTYPE(X) (((X) >> 24) & 0x0F) #define SDL_PIXELORDER(X) (((X) >> 20) & 0x0F) #define SDL_PIXELLAYOUT(X) (((X) >> 16) & 0x0F) #define SDL_BITSPERPIXEL(X) (((X) >> 8) & 0xFF) #define SDL_BYTESPERPIXEL(X) \ (SDL_ISPIXELFORMAT_FOURCC(X) ? \ ((((X) == SDL_PIXELFORMAT_YUY2) || \ ((X) == SDL_PIXELFORMAT_UYVY) || \ ((X) == SDL_PIXELFORMAT_YVYU)) ? 2 : 1) : (((X) >> 0) & 0xFF)) #define SDL_ISPIXELFORMAT_INDEXED(format) \ (!SDL_ISPIXELFORMAT_FOURCC(format) && \ ((SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX1) || \ (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX4) || \ (SDL_PIXELTYPE(format) == SDL_PIXELTYPE_INDEX8))) #define SDL_ISPIXELFORMAT_ALPHA(format) \ (!SDL_ISPIXELFORMAT_FOURCC(format) && \ ((SDL_PIXELORDER(format) == SDL_PACKEDORDER_ARGB) || \ (SDL_PIXELORDER(format) == SDL_PACKEDORDER_RGBA) || \ (SDL_PIXELORDER(format) == SDL_PACKEDORDER_ABGR) || \ (SDL_PIXELORDER(format) == SDL_PACKEDORDER_BGRA))) #define SDL_ISPIXELFORMAT_FOURCC(format) \ ((format) && !((format) & 0x80000000)) /* Note: If you modify this list, update SDL_GetPixelFormatName() */ enum { SDL_PIXELFORMAT_UNKNOWN, SDL_PIXELFORMAT_INDEX1LSB = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_4321, 0, 1, 0), SDL_PIXELFORMAT_INDEX1MSB = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX1, SDL_BITMAPORDER_1234, 0, 1, 0), SDL_PIXELFORMAT_INDEX4LSB = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_4321, 0, 4, 0), SDL_PIXELFORMAT_INDEX4MSB = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX4, SDL_BITMAPORDER_1234, 0, 4, 0), SDL_PIXELFORMAT_INDEX8 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_INDEX8, 0, 0, 8, 1), SDL_PIXELFORMAT_RGB332 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED8, SDL_PACKEDORDER_XRGB, SDL_PACKEDLAYOUT_332, 8, 1), SDL_PIXELFORMAT_RGB444 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB, SDL_PACKEDLAYOUT_4444, 12, 2), SDL_PIXELFORMAT_RGB555 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB, SDL_PACKEDLAYOUT_1555, 15, 2), SDL_PIXELFORMAT_BGR555 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XBGR, SDL_PACKEDLAYOUT_1555, 15, 2), SDL_PIXELFORMAT_ARGB4444 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB, SDL_PACKEDLAYOUT_4444, 16, 2), SDL_PIXELFORMAT_RGBA4444 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_RGBA, SDL_PACKEDLAYOUT_4444, 16, 2), SDL_PIXELFORMAT_ABGR4444 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ABGR, SDL_PACKEDLAYOUT_4444, 16, 2), SDL_PIXELFORMAT_BGRA4444 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_BGRA, SDL_PACKEDLAYOUT_4444, 16, 2), SDL_PIXELFORMAT_ARGB1555 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ARGB, SDL_PACKEDLAYOUT_1555, 16, 2), SDL_PIXELFORMAT_RGBA5551 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_RGBA, SDL_PACKEDLAYOUT_5551, 16, 2), SDL_PIXELFORMAT_ABGR1555 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_ABGR, SDL_PACKEDLAYOUT_1555, 16, 2), SDL_PIXELFORMAT_BGRA5551 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_BGRA, SDL_PACKEDLAYOUT_5551, 16, 2), SDL_PIXELFORMAT_RGB565 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XRGB, SDL_PACKEDLAYOUT_565, 16, 2), SDL_PIXELFORMAT_BGR565 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED16, SDL_PACKEDORDER_XBGR, SDL_PACKEDLAYOUT_565, 16, 2), SDL_PIXELFORMAT_RGB24 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_RGB, 0, 24, 3), SDL_PIXELFORMAT_BGR24 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_ARRAYU8, SDL_ARRAYORDER_BGR, 0, 24, 3), SDL_PIXELFORMAT_RGB888 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XRGB, SDL_PACKEDLAYOUT_8888, 24, 4), SDL_PIXELFORMAT_BGR888 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_XBGR, SDL_PACKEDLAYOUT_8888, 24, 4), SDL_PIXELFORMAT_ARGB8888 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB, SDL_PACKEDLAYOUT_8888, 32, 4), SDL_PIXELFORMAT_RGBA8888 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_RGBA, SDL_PACKEDLAYOUT_8888, 32, 4), SDL_PIXELFORMAT_ABGR8888 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ABGR, SDL_PACKEDLAYOUT_8888, 32, 4), SDL_PIXELFORMAT_BGRA8888 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_BGRA, SDL_PACKEDLAYOUT_8888, 32, 4), SDL_PIXELFORMAT_ARGB2101010 = SDL_DEFINE_PIXELFORMAT(SDL_PIXELTYPE_PACKED32, SDL_PACKEDORDER_ARGB, SDL_PACKEDLAYOUT_2101010, 32, 4), SDL_PIXELFORMAT_YV12 = /**< Planar mode: Y + V + U (3 planes) */ SDL_DEFINE_PIXELFOURCC('Y', 'V', '1', '2'), SDL_PIXELFORMAT_IYUV = /**< Planar mode: Y + U + V (3 planes) */ SDL_DEFINE_PIXELFOURCC('I', 'Y', 'U', 'V'), SDL_PIXELFORMAT_YUY2 = /**< Packed mode: Y0+U0+Y1+V0 (1 plane) */ SDL_DEFINE_PIXELFOURCC('Y', 'U', 'Y', '2'), SDL_PIXELFORMAT_UYVY = /**< Packed mode: U0+Y0+V0+Y1 (1 plane) */ SDL_DEFINE_PIXELFOURCC('U', 'Y', 'V', 'Y'), SDL_PIXELFORMAT_YVYU = /**< Packed mode: Y0+V0+Y1+U0 (1 plane) */ SDL_DEFINE_PIXELFOURCC('Y', 'V', 'Y', 'U') }; typedef struct SDL_Color { Uint8 r; Uint8 g; Uint8 b; Uint8 unused; } SDL_Color; #define SDL_Colour SDL_Color typedef struct SDL_Palette { int ncolors; SDL_Color *colors; Uint32 version; int refcount; } SDL_Palette; /** * \note Everything in the pixel format structure is read-only. */ typedef struct SDL_PixelFormat { Uint32 format; SDL_Palette *palette; Uint8 BitsPerPixel; Uint8 BytesPerPixel; Uint8 padding[2]; Uint32 Rmask; Uint32 Gmask; Uint32 Bmask; Uint32 Amask; Uint8 Rloss; Uint8 Gloss; Uint8 Bloss; Uint8 Aloss; Uint8 Rshift; Uint8 Gshift; Uint8 Bshift; Uint8 Ashift; int refcount; struct SDL_PixelFormat *next; } SDL_PixelFormat; /** * \brief Get the human readable name of a pixel format */ extern DECLSPEC const char* SDLCALL SDL_GetPixelFormatName(Uint32 format); /** * \brief Convert one of the enumerated pixel formats to a bpp and RGBA masks. * * \return SDL_TRUE, or SDL_FALSE if the conversion wasn't possible. * * \sa SDL_MasksToPixelFormatEnum() */ extern DECLSPEC SDL_bool SDLCALL SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask, Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask); /** * \brief Convert a bpp and RGBA masks to an enumerated pixel format. * * \return The pixel format, or ::SDL_PIXELFORMAT_UNKNOWN if the conversion * wasn't possible. * * \sa SDL_PixelFormatEnumToMasks() */ extern DECLSPEC Uint32 SDLCALL SDL_MasksToPixelFormatEnum(int bpp, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); /** * \brief Create an SDL_PixelFormat structure from a pixel format enum. */ extern DECLSPEC SDL_PixelFormat * SDLCALL SDL_AllocFormat(Uint32 pixel_format); /** * \brief Free an SDL_PixelFormat structure. */ extern DECLSPEC void SDLCALL SDL_FreeFormat(SDL_PixelFormat *format); /** * \brief Create a palette structure with the specified number of color * entries. * * \return A new palette, or NULL if there wasn't enough memory. * * \note The palette entries are initialized to white. * * \sa SDL_FreePalette() */ extern DECLSPEC SDL_Palette *SDLCALL SDL_AllocPalette(int ncolors); /** * \brief Set the palette for a pixel format structure. */ extern DECLSPEC int SDLCALL SDL_SetPixelFormatPalette(SDL_PixelFormat * format, SDL_Palette *palette); /** * \brief Set a range of colors in a palette. * * \param palette The palette to modify. * \param colors An array of colors to copy into the palette. * \param firstcolor The index of the first palette entry to modify. * \param ncolors The number of entries to modify. * * \return 0 on success, or -1 if not all of the colors could be set. */ extern DECLSPEC int SDLCALL SDL_SetPaletteColors(SDL_Palette * palette, const SDL_Color * colors, int firstcolor, int ncolors); /** * \brief Free a palette created with SDL_AllocPalette(). * * \sa SDL_AllocPalette() */ extern DECLSPEC void SDLCALL SDL_FreePalette(SDL_Palette * palette); /** * \brief Maps an RGB triple to an opaque pixel value for a given pixel format. * * \sa SDL_MapRGBA */ extern DECLSPEC Uint32 SDLCALL SDL_MapRGB(const SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b); /** * \brief Maps an RGBA quadruple to a pixel value for a given pixel format. * * \sa SDL_MapRGB */ extern DECLSPEC Uint32 SDLCALL SDL_MapRGBA(const SDL_PixelFormat * format, Uint8 r, Uint8 g, Uint8 b, Uint8 a); /** * \brief Get the RGB components from a pixel of the specified format. * * \sa SDL_GetRGBA */ extern DECLSPEC void SDLCALL SDL_GetRGB(Uint32 pixel, const SDL_PixelFormat * format, Uint8 * r, Uint8 * g, Uint8 * b); /** * \brief Get the RGBA components from a pixel of the specified format. * * \sa SDL_GetRGB */ extern DECLSPEC void SDLCALL SDL_GetRGBA(Uint32 pixel, const SDL_PixelFormat * format, Uint8 * r, Uint8 * g, Uint8 * b, Uint8 * a); /** * \brief Calculate a 256 entry gamma ramp for a gamma value. */ extern DECLSPEC void SDLCALL SDL_CalculateGammaRamp(float gamma, Uint16 * ramp); /* Ends C function definitions when using C++ */ #ifdef __cplusplus /* *INDENT-OFF* */ } /* *INDENT-ON* */ #endif #include "close_code.h" #endif /* _SDL_pixels_h */ /* vi: set ts=4 sw=4 expandtab: */