1 files changed, 0 insertions, 625 deletions

diff --git a/distrib/sdl-1.2.12/src/video/SDL_pixels.c b/distrib/sdl-1.2.12/src/video/SDL_pixels.c
deleted file mode 100644
index 33c16e6..0000000
--- a/distrib/sdl-1.2.12/src/video/SDL_pixels.c
+++ /dev/null
@@ -1,625 +0,0 @@
-/*
-    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
-*/
-#include "SDL_config.h"
-
-/* General (mostly internal) pixel/color manipulation routines for SDL */
-
-#include "SDL_endian.h"
-#include "SDL_video.h"
-#include "SDL_sysvideo.h"
-#include "SDL_blit.h"
-#include "SDL_pixels_c.h"
-#include "SDL_RLEaccel_c.h"
-
-/* Helper functions */
-/*
- * Allocate a pixel format structure and fill it according to the given info.
- */
-SDL_PixelFormat *SDL_AllocFormat(int bpp,
-			Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
-{
-	SDL_PixelFormat *format;
-	Uint32 mask;
-
-	/* Allocate an empty pixel format structure */
-	format = SDL_malloc(sizeof(*format));
-	if ( format == NULL ) {
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-	SDL_memset(format, 0, sizeof(*format));
-	format->alpha = SDL_ALPHA_OPAQUE;
-
-	/* Set up the format */
-	format->BitsPerPixel = bpp;
-	format->BytesPerPixel = (bpp+7)/8;
-	if ( Rmask || Bmask || Gmask ) { /* Packed pixels with custom mask */
-		format->palette = NULL;
-		format->Rshift = 0;
-		format->Rloss = 8;
-		if ( Rmask ) {
-			for ( mask = Rmask; !(mask&0x01); mask >>= 1 )
-				++format->Rshift;
-			for ( ; (mask&0x01); mask >>= 1 )
-				--format->Rloss;
-		}
-		format->Gshift = 0;
-		format->Gloss = 8;
-		if ( Gmask ) {
-			for ( mask = Gmask; !(mask&0x01); mask >>= 1 )
-				++format->Gshift;
-			for ( ; (mask&0x01); mask >>= 1 )
-				--format->Gloss;
-		}
-		format->Bshift = 0;
-		format->Bloss = 8;
-		if ( Bmask ) {
-			for ( mask = Bmask; !(mask&0x01); mask >>= 1 )
-				++format->Bshift;
-			for ( ; (mask&0x01); mask >>= 1 )
-				--format->Bloss;
-		}
-		format->Ashift = 0;
-		format->Aloss = 8;
-		if ( Amask ) {
-			for ( mask = Amask; !(mask&0x01); mask >>= 1 )
-				++format->Ashift;
-			for ( ; (mask&0x01); mask >>= 1 )
-				--format->Aloss;
-		}
-		format->Rmask = Rmask;
-		format->Gmask = Gmask;
-		format->Bmask = Bmask;
-		format->Amask = Amask;
-	} else if ( bpp > 8 ) {		/* Packed pixels with standard mask */
-		/* R-G-B */
-		if ( bpp > 24 )
-			bpp = 24;
-		format->Rloss = 8-(bpp/3);
-		format->Gloss = 8-(bpp/3)-(bpp%3);
-		format->Bloss = 8-(bpp/3);
-		format->Rshift = ((bpp/3)+(bpp%3))+(bpp/3);
-		format->Gshift = (bpp/3);
-		format->Bshift = 0;
-		format->Rmask = ((0xFF>>format->Rloss)<<format->Rshift);
-		format->Gmask = ((0xFF>>format->Gloss)<<format->Gshift);
-		format->Bmask = ((0xFF>>format->Bloss)<<format->Bshift);
-	} else {
-		/* Palettized formats have no mask info */
-		format->Rloss = 8;
-		format->Gloss = 8;
-		format->Bloss = 8;
-		format->Aloss = 8;
-		format->Rshift = 0;
-		format->Gshift = 0;
-		format->Bshift = 0;
-		format->Ashift = 0;
-		format->Rmask = 0;
-		format->Gmask = 0;
-		format->Bmask = 0;
-		format->Amask = 0;
-	}
-	if ( bpp <= 8 ) {			/* Palettized mode */
-		int ncolors = 1<<bpp;
-#ifdef DEBUG_PALETTE
-		fprintf(stderr,"bpp=%d ncolors=%d\n",bpp,ncolors);
-#endif
-		format->palette = (SDL_Palette *)SDL_malloc(sizeof(SDL_Palette));
-		if ( format->palette == NULL ) {
-			SDL_FreeFormat(format);
-			SDL_OutOfMemory();
-			return(NULL);
-		}
-		(format->palette)->ncolors = ncolors;
-		(format->palette)->colors = (SDL_Color *)SDL_malloc(
-				(format->palette)->ncolors*sizeof(SDL_Color));
-		if ( (format->palette)->colors == NULL ) {
-			SDL_FreeFormat(format);
-			SDL_OutOfMemory();
-			return(NULL);
-		}
-		if ( Rmask || Bmask || Gmask ) {
-			/* create palette according to masks */
-			int i;
-			int Rm=0,Gm=0,Bm=0;
-			int Rw=0,Gw=0,Bw=0;
-#ifdef ENABLE_PALETTE_ALPHA
-			int Am=0,Aw=0;
-#endif
-			if(Rmask)
-			{
-				Rw=8-format->Rloss;
-				for(i=format->Rloss;i>0;i-=Rw)
-					Rm|=1<<i;
-			}
-#ifdef DEBUG_PALETTE
-			fprintf(stderr,"Rw=%d Rm=0x%02X\n",Rw,Rm);
-#endif
-			if(Gmask)
-			{
-				Gw=8-format->Gloss;
-				for(i=format->Gloss;i>0;i-=Gw)
-					Gm|=1<<i;
-			}
-#ifdef DEBUG_PALETTE
-			fprintf(stderr,"Gw=%d Gm=0x%02X\n",Gw,Gm);
-#endif
-			if(Bmask)
-			{
-				Bw=8-format->Bloss;
-				for(i=format->Bloss;i>0;i-=Bw)
-					Bm|=1<<i;
-			}
-#ifdef DEBUG_PALETTE
-			fprintf(stderr,"Bw=%d Bm=0x%02X\n",Bw,Bm);
-#endif
-#ifdef ENABLE_PALETTE_ALPHA
-			if(Amask)
-			{
-				Aw=8-format->Aloss;
-				for(i=format->Aloss;i>0;i-=Aw)
-					Am|=1<<i;
-			}
-# ifdef DEBUG_PALETTE
-			fprintf(stderr,"Aw=%d Am=0x%02X\n",Aw,Am);
-# endif
-#endif
-			for(i=0; i < ncolors; ++i) {
-				int r,g,b;
-				r=(i&Rmask)>>format->Rshift;
-				r=(r<<format->Rloss)|((r*Rm)>>Rw);
-				format->palette->colors[i].r=r;
-
-				g=(i&Gmask)>>format->Gshift;
-				g=(g<<format->Gloss)|((g*Gm)>>Gw);
-				format->palette->colors[i].g=g;
-
-				b=(i&Bmask)>>format->Bshift;
-				b=(b<<format->Bloss)|((b*Bm)>>Bw);
-				format->palette->colors[i].b=b;
-
-#ifdef ENABLE_PALETTE_ALPHA
-				a=(i&Amask)>>format->Ashift;
-				a=(a<<format->Aloss)|((a*Am)>>Aw);
-				format->palette->colors[i].unused=a;
-#else
-				format->palette->colors[i].unused=0;
-#endif
-			}
-		} else if ( ncolors == 2 ) {
-			/* Create a black and white bitmap palette */
-			format->palette->colors[0].r = 0xFF;
-			format->palette->colors[0].g = 0xFF;
-			format->palette->colors[0].b = 0xFF;
-			format->palette->colors[1].r = 0x00;
-			format->palette->colors[1].g = 0x00;
-			format->palette->colors[1].b = 0x00;
-		} else {
-			/* Create an empty palette */
-			SDL_memset((format->palette)->colors, 0,
-				(format->palette)->ncolors*sizeof(SDL_Color));
-		}
-	}
-	return(format);
-}
-SDL_PixelFormat *SDL_ReallocFormat(SDL_Surface *surface, int bpp,
-			Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask)
-{
-	if ( surface->format ) {
-		SDL_FreeFormat(surface->format);
-		SDL_FormatChanged(surface);
-	}
-	surface->format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
-	return surface->format;
-}
-
-/*
- * Change any previous mappings from/to the new surface format
- */
-void SDL_FormatChanged(SDL_Surface *surface)
-{
-	static int format_version = 0;
-	++format_version;
-	if ( format_version < 0 ) { /* It wrapped... */
-		format_version = 1;
-	}
-	surface->format_version = format_version;
-	SDL_InvalidateMap(surface->map);
-}
-/*
- * Free a previously allocated format structure
- */
-void SDL_FreeFormat(SDL_PixelFormat *format)
-{
-	if ( format ) {
-		if ( format->palette ) {
-			if ( format->palette->colors ) {
-				SDL_free(format->palette->colors);
-			}
-			SDL_free(format->palette);
-		}
-		SDL_free(format);
-	}
-}
-/*
- * Calculate an 8-bit (3 red, 3 green, 2 blue) dithered palette of colors
- */
-void SDL_DitherColors(SDL_Color *colors, int bpp)
-{
-	int i;
-	if(bpp != 8)
-		return;		/* only 8bpp supported right now */
-
-	for(i = 0; i < 256; i++) {
-		int r, g, b;
-		/* map each bit field to the full [0, 255] interval,
-		   so 0 is mapped to (0, 0, 0) and 255 to (255, 255, 255) */
-		r = i & 0xe0;
-		r |= r >> 3 | r >> 6;
-		colors[i].r = r;
-		g = (i << 3) & 0xe0;
-		g |= g >> 3 | g >> 6;
-		colors[i].g = g;
-		b = i & 0x3;
-		b |= b << 2;
-		b |= b << 4;
-		colors[i].b = b;
-	}
-}
-/* 
- * Calculate the pad-aligned scanline width of a surface
- */
-Uint16 SDL_CalculatePitch(SDL_Surface *surface)
-{
-	Uint16 pitch;
-
-	/* Surface should be 4-byte aligned for speed */
-	pitch = surface->w*surface->format->BytesPerPixel;
-	switch (surface->format->BitsPerPixel) {
-		case 1:
-			pitch = (pitch+7)/8;
-			break;
-		case 4:
-			pitch = (pitch+1)/2;
-			break;
-		default:
-			break;
-	}
-	pitch = (pitch + 3) & ~3;	/* 4-byte aligning */
-	return(pitch);
-}
-/*
- * Match an RGB value to a particular palette index
- */
-Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b)
-{
-	/* Do colorspace distance matching */
-	unsigned int smallest;
-	unsigned int distance;
-	int rd, gd, bd;
-	int i;
-	Uint8 pixel=0;
-		
-	smallest = ~0;
-	for ( i=0; i<pal->ncolors; ++i ) {
-		rd = pal->colors[i].r - r;
-		gd = pal->colors[i].g - g;
-		bd = pal->colors[i].b - b;
-		distance = (rd*rd)+(gd*gd)+(bd*bd);
-		if ( distance < smallest ) {
-			pixel = i;
-			if ( distance == 0 ) { /* Perfect match! */
-				break;
-			}
-			smallest = distance;
-		}
-	}
-	return(pixel);
-}
-
-/* Find the opaque pixel value corresponding to an RGB triple */
-Uint32 SDL_MapRGB
-(const SDL_PixelFormat * const format,
- const Uint8 r, const Uint8 g, const Uint8 b)
-{
-	if ( format->palette == NULL ) {
-		return (r >> format->Rloss) << format->Rshift
-		       | (g >> format->Gloss) << format->Gshift
-		       | (b >> format->Bloss) << format->Bshift
-		       | format->Amask;
-	} else {
-		return SDL_FindColor(format->palette, r, g, b);
-	}
-}
-
-/* Find the pixel value corresponding to an RGBA quadruple */
-Uint32 SDL_MapRGBA
-(const SDL_PixelFormat * const format,
- const Uint8 r, const Uint8 g, const Uint8 b, const Uint8 a)
-{
-	if ( format->palette == NULL ) {
-	        return (r >> format->Rloss) << format->Rshift
-		    | (g >> format->Gloss) << format->Gshift
-		    | (b >> format->Bloss) << format->Bshift
-		    | ((a >> format->Aloss) << format->Ashift & format->Amask);
-	} else {
-		return SDL_FindColor(format->palette, r, g, b);
-	}
-}
-
-void SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat *fmt,
-		 Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a)
-{
-	if ( fmt->palette == NULL ) {
-	        /*
-		 * This makes sure that the result is mapped to the
-		 * interval [0..255], and the maximum value for each
-		 * component is 255. This is important to make sure
-		 * that white is indeed reported as (255, 255, 255),
-		 * and that opaque alpha is 255.
-		 * This only works for RGB bit fields at least 4 bit
-		 * wide, which is almost always the case.
-		 */
-	        unsigned v;
-		v = (pixel & fmt->Rmask) >> fmt->Rshift;
-		*r = (v << fmt->Rloss) + (v >> (8 - (fmt->Rloss << 1)));
-		v = (pixel & fmt->Gmask) >> fmt->Gshift;
-		*g = (v << fmt->Gloss) + (v >> (8 - (fmt->Gloss << 1)));
-		v = (pixel & fmt->Bmask) >> fmt->Bshift;
-		*b = (v << fmt->Bloss) + (v >> (8 - (fmt->Bloss << 1)));
-		if(fmt->Amask) {
-		        v = (pixel & fmt->Amask) >> fmt->Ashift;
-			*a = (v << fmt->Aloss) + (v >> (8 - (fmt->Aloss << 1)));
-		} else {
-		        *a = SDL_ALPHA_OPAQUE;
-                }
-	} else {
-		*r = fmt->palette->colors[pixel].r;
-		*g = fmt->palette->colors[pixel].g;
-		*b = fmt->palette->colors[pixel].b;
-		*a = SDL_ALPHA_OPAQUE;
-	}
-}
-
-void SDL_GetRGB(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r,Uint8 *g,Uint8 *b)
-{
-	if ( fmt->palette == NULL ) {
-	        /* the note for SDL_GetRGBA above applies here too */
-	        unsigned v;
-		v = (pixel & fmt->Rmask) >> fmt->Rshift;
-		*r = (v << fmt->Rloss) + (v >> (8 - (fmt->Rloss << 1)));
-		v = (pixel & fmt->Gmask) >> fmt->Gshift;
-		*g = (v << fmt->Gloss) + (v >> (8 - (fmt->Gloss << 1)));
-		v = (pixel & fmt->Bmask) >> fmt->Bshift;
-		*b = (v << fmt->Bloss) + (v >> (8 - (fmt->Bloss << 1)));
-	} else {
-		*r = fmt->palette->colors[pixel].r;
-		*g = fmt->palette->colors[pixel].g;
-		*b = fmt->palette->colors[pixel].b;
-	}
-}
-
-/* Apply gamma to a set of colors - this is easy. :) */
-void SDL_ApplyGamma(Uint16 *gamma, SDL_Color *colors, SDL_Color *output,
-							int ncolors)
-{
-	int i;
-
-	for ( i=0; i<ncolors; ++i ) {
-		output[i].r = gamma[0*256 + colors[i].r] >> 8;
-		output[i].g = gamma[1*256 + colors[i].g] >> 8;
-		output[i].b = gamma[2*256 + colors[i].b] >> 8;
-	}
-}
-
-/* Map from Palette to Palette */
-static Uint8 *Map1to1(SDL_Palette *src, SDL_Palette *dst, int *identical)
-{
-	Uint8 *map;
-	int i;
-
-	if ( identical ) {
-		if ( src->ncolors <= dst->ncolors ) {
-			/* If an identical palette, no need to map */
-			if ( SDL_memcmp(src->colors, dst->colors, src->ncolors*
-						sizeof(SDL_Color)) == 0 ) {
-				*identical = 1;
-				return(NULL);
-			}
-		}
-		*identical = 0;
-	}
-	map = (Uint8 *)SDL_malloc(src->ncolors);
-	if ( map == NULL ) {
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-	for ( i=0; i<src->ncolors; ++i ) {
-		map[i] = SDL_FindColor(dst,
-			src->colors[i].r, src->colors[i].g, src->colors[i].b);
-	}
-	return(map);
-}
-/* Map from Palette to BitField */
-static Uint8 *Map1toN(SDL_PixelFormat *src, SDL_PixelFormat *dst)
-{
-	Uint8 *map;
-	int i;
-	int  bpp;
-	unsigned alpha;
-	SDL_Palette *pal = src->palette;
-
-	bpp = ((dst->BytesPerPixel == 3) ? 4 : dst->BytesPerPixel);
-	map = (Uint8 *)SDL_malloc(pal->ncolors*bpp);
-	if ( map == NULL ) {
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-
-	alpha = dst->Amask ? src->alpha : 0;
-	/* We memory copy to the pixel map so the endianness is preserved */
-	for ( i=0; i<pal->ncolors; ++i ) {
-		ASSEMBLE_RGBA(&map[i*bpp], dst->BytesPerPixel, dst,
-			      pal->colors[i].r, pal->colors[i].g,
-			      pal->colors[i].b, alpha);
-	}
-	return(map);
-}
-/* Map from BitField to Dithered-Palette to Palette */
-static Uint8 *MapNto1(SDL_PixelFormat *src, SDL_PixelFormat *dst, int *identical)
-{
-	/* Generate a 256 color dither palette */
-	SDL_Palette dithered;
-	SDL_Color colors[256];
-	SDL_Palette *pal = dst->palette;
-	
-	/* SDL_DitherColors does not initialize the 'unused' component of colors,
-	   but Map1to1 compares it against pal, so we should initialize it. */  
-	SDL_memset(colors, 0, sizeof(colors));
-
-	dithered.ncolors = 256;
-	SDL_DitherColors(colors, 8);
-	dithered.colors = colors;
-	return(Map1to1(&dithered, pal, identical));
-}
-
-SDL_BlitMap *SDL_AllocBlitMap(void)
-{
-	SDL_BlitMap *map;
-
-	/* Allocate the empty map */
-	map = (SDL_BlitMap *)SDL_malloc(sizeof(*map));
-	if ( map == NULL ) {
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-	SDL_memset(map, 0, sizeof(*map));
-
-	/* Allocate the software blit data */
-	map->sw_data = (struct private_swaccel *)SDL_malloc(sizeof(*map->sw_data));
-	if ( map->sw_data == NULL ) {
-		SDL_FreeBlitMap(map);
-		SDL_OutOfMemory();
-		return(NULL);
-	}
-	SDL_memset(map->sw_data, 0, sizeof(*map->sw_data));
-
-	/* It's ready to go */
-	return(map);
-}
-void SDL_InvalidateMap(SDL_BlitMap *map)
-{
-	if ( ! map ) {
-		return;
-	}
-	map->dst = NULL;
-	map->format_version = (unsigned int)-1;
-	if ( map->table ) {
-		SDL_free(map->table);
-		map->table = NULL;
-	}
-}
-int SDL_MapSurface (SDL_Surface *src, SDL_Surface *dst)
-{
-	SDL_PixelFormat *srcfmt;
-	SDL_PixelFormat *dstfmt;
-	SDL_BlitMap *map;
-
-	/* Clear out any previous mapping */
-	map = src->map;
-	if ( (src->flags & SDL_RLEACCEL) == SDL_RLEACCEL ) {
-		SDL_UnRLESurface(src, 1);
-	}
-	SDL_InvalidateMap(map);
-
-	/* Figure out what kind of mapping we're doing */
-	map->identity = 0;
-	srcfmt = src->format;
-	dstfmt = dst->format;
-	switch (srcfmt->BytesPerPixel) {
-	    case 1:
-		switch (dstfmt->BytesPerPixel) {
-		    case 1:
-			/* Palette --> Palette */
-			/* If both SDL_HWSURFACE, assume have same palette */
-			if ( ((src->flags & SDL_HWSURFACE) == SDL_HWSURFACE) &&
-			     ((dst->flags & SDL_HWSURFACE) == SDL_HWSURFACE) ) {
-				map->identity = 1;
-			} else {
-				map->table = Map1to1(srcfmt->palette,
-					dstfmt->palette, &map->identity);
-			}
-			if ( ! map->identity ) {
-				if ( map->table == NULL ) {
-					return(-1);
-				}
-			}
-			if (srcfmt->BitsPerPixel!=dstfmt->BitsPerPixel)
-				map->identity = 0;
-			break;
-
-		    default:
-			/* Palette --> BitField */
-			map->table = Map1toN(srcfmt, dstfmt);
-			if ( map->table == NULL ) {
-				return(-1);
-			}
-			break;
-		}
-		break;
-	default:
-		switch (dstfmt->BytesPerPixel) {
-		    case 1:
-			/* BitField --> Palette */
-			map->table = MapNto1(srcfmt, dstfmt, &map->identity);
-			if ( ! map->identity ) {
-				if ( map->table == NULL ) {
-					return(-1);
-				}
-			}
-			map->identity = 0;	/* Don't optimize to copy */
-			break;
-		    default:
-			/* BitField --> BitField */
-			if ( FORMAT_EQUAL(srcfmt, dstfmt) )
-				map->identity = 1;
-			break;
-		}
-		break;
-	}
-
-	map->dst = dst;
-	map->format_version = dst->format_version;
-
-	/* Choose your blitters wisely */
-	return(SDL_CalculateBlit(src));
-}
-void SDL_FreeBlitMap(SDL_BlitMap *map)
-{
-	if ( map ) {
-		SDL_InvalidateMap(map);
-		if ( map->sw_data != NULL ) {
-			SDL_free(map->sw_data);
-		}
-		SDL_free(map);
-	}
-}