1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 Sam Lantinga 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 /* Useful functions and variables from SDL_pixel.c */ 25 26 #include "SDL_blit.h" 27 28 /* Pixel format functions */ 29 extern SDL_PixelFormat *SDL_AllocFormat(int bpp, 30 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); 31 extern SDL_PixelFormat *SDL_ReallocFormat(SDL_Surface *surface, int bpp, 32 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask); 33 extern void SDL_FormatChanged(SDL_Surface *surface); 34 extern void SDL_FreeFormat(SDL_PixelFormat *format); 35 36 /* Blit mapping functions */ 37 extern SDL_BlitMap *SDL_AllocBlitMap(void); 38 extern void SDL_InvalidateMap(SDL_BlitMap *map); 39 extern int SDL_MapSurface (SDL_Surface *src, SDL_Surface *dst); 40 extern void SDL_FreeBlitMap(SDL_BlitMap *map); 41 42 /* Miscellaneous functions */ 43 extern Uint16 SDL_CalculatePitch(SDL_Surface *surface); 44 extern void SDL_DitherColors(SDL_Color *colors, int bpp); 45 extern Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b); 46 extern void SDL_ApplyGamma(Uint16 *gamma, SDL_Color *colors, SDL_Color *output, int ncolors); 47
