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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Useful functions and variables from SDL_pixel.c */
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29
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30 #include "SDL_blit.h"
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31
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32 /* Pixel format functions */
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33 extern SDL_PixelFormat *SDL_AllocFormat(int bpp,
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34 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
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35 extern SDL_PixelFormat *SDL_ReallocFormat(SDL_Surface *surface, int bpp,
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36 Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);
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37 extern void SDL_FormatChanged(SDL_Surface *surface);
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38 extern void SDL_FreeFormat(SDL_PixelFormat *format);
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39
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40 /* Blit mapping functions */
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41 extern SDL_BlitMap *SDL_AllocBlitMap(void);
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42 extern void SDL_InvalidateMap(SDL_BlitMap *map);
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43 extern int SDL_MapSurface (SDL_Surface *src, SDL_Surface *dst);
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44 extern void SDL_FreeBlitMap(SDL_BlitMap *map);
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45
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46 /* Miscellaneous functions */
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47 extern Uint16 SDL_CalculatePitch(SDL_Surface *surface);
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48 extern void SDL_DitherColors(SDL_Color *colors, int bpp);
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49 extern Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b);
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50 extern void SDL_ApplyGamma(Uint16 *gamma, SDL_Color *colors, SDL_Color *output, int ncolors);
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