/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 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 enum { /* Pixel type */ 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, }; enum { /* bitmap pixel order, high bit -> low bit */ SDL_BitmapOrder_None, SDL_BitmapOrder_4321, SDL_BitmapOrder_1234, }; enum { /* packed component order, high bit -> low bit */ 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, }; enum { /* array component order, low byte -> high byte */ SDL_ArrayOrder_None, SDL_ArrayOrder_RGB, SDL_ArrayOrder_RGBA, SDL_ArrayOrder_ARGB, SDL_ArrayOrder_BGR, SDL_ArrayOrder_BGRA, SDL_ArrayOrder_ABGR, }; enum { /* Packed component layout */ 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) \ ((A) | ((B) << 8) | ((C) << 16) | ((D) << 24)) #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) (((X) >> 0) & 0xFF) #define SDL_ISPIXELFORMAT_INDEXED(format) \ ((SDL_PIXELTYPE(format) == SDL_PixelType_Index1) || \ (SDL_PIXELTYPE(format) == SDL_PixelType_Index4) || \ (SDL_PIXELTYPE(format) == SDL_PixelType_Index8)) #define SDL_ISPIXELFORMAT_FOURCC(format) \ ((format) && !((format) & 0x80000000)) enum { SDL_PixelFormat_Unknown, SDL_PixelFormat_Index1LSB = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index1, SDL_BitmapOrder_1234, 0, 1, 0), SDL_PixelFormat_Index1MSB = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index1, SDL_BitmapOrder_4321, 0, 1, 0), SDL_PixelFormat_Index4LSB = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index4, SDL_BitmapOrder_1234, 0, 2, 0), SDL_PixelFormat_Index4MSB = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Index4, SDL_BitmapOrder_4321, 0, 2, 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_ARGB4444 = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_ARGB, SDL_PackedLayout_4444, 16, 2), SDL_PixelFormat_ARGB1555 = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_ARGB, SDL_PackedLayout_1555, 16, 2), SDL_PixelFormat_RGB565 = SDL_DEFINE_PIXELFORMAT(SDL_PixelType_Packed16, SDL_PackedOrder_XRGB, 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 SDL_Palette; typedef int (*SDL_PaletteChangedFunc) (void *userdata, SDL_Palette * palette); typedef struct SDL_PaletteWatch { SDL_PaletteChangedFunc callback; void *userdata; struct SDL_PaletteWatch *next; } SDL_PaletteWatch; struct SDL_Palette { int ncolors; SDL_Color *colors; int refcount; SDL_PaletteWatch *watch; }; /* Everything in the pixel format structure is read-only */ typedef struct SDL_PixelFormat { SDL_Palette *palette; Uint8 BitsPerPixel; Uint8 BytesPerPixel; Uint8 Rloss; Uint8 Gloss; Uint8 Bloss; Uint8 Aloss; Uint8 Rshift; Uint8 Gshift; Uint8 Bshift; Uint8 Ashift; Uint32 Rmask; Uint32 Gmask; Uint32 Bmask; Uint32 Amask; /* RGB color key information */ Uint32 colorkey; /* Alpha value information (per-surface alpha) */ Uint8 alpha; } SDL_PixelFormat; /** * \fn SDL_bool SDL_PixelFormatEnumToMasks(Uint32 format, int *bpp, Uint32 * Rmask, Uint32 * Gmask, Uint32 * Bmask, Uint32 * Amask) * * \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); /** * \fn Uint32 SDL_MasksToPixelFormatEnum(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); /** * \fn SDL_Palette *SDL_AllocPalette(int ncolors) * * \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); /** * \fn int SDL_AddPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata) * * \brief Add a callback function which is called when the palette changes. * * \sa SDL_DelPaletteWatch() */ extern DECLSPEC int SDLCALL SDL_AddPaletteWatch(SDL_Palette * palette, SDL_PaletteChangedFunc callback, void *userdata); /** * \fn void SDL_DelPaletteWatch(SDL_Palette *palette, SDL_PaletteChangedFunc callback, void *userdata) * * \brief Remove a callback function previously added with SDL_AddPaletteWatch() * * \sa SDL_AddPaletteWatch() */ extern DECLSPEC void SDLCALL SDL_DelPaletteWatch(SDL_Palette * palette, SDL_PaletteChangedFunc callback, void *userdata); /** * \fn int SDL_SetPaletteColors(SDL_Palette *palette, const SDL_Colors *colors, int firstcolor, int numcolors) * * \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); /** * \fn void SDL_FreePalette(SDL_Palette *palette) * * \brief Free a palette created with SDL_AllocPalette() * * \sa SDL_AllocPalette() */ extern DECLSPEC void SDLCALL SDL_FreePalette(SDL_Palette * palette); /* 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: */