From d8239786b306ffda6d5d73753d01f0ad3358e1a0 Mon Sep 17 00:00:00 2001 From: Jesse Hall Date: Tue, 17 Jul 2012 16:58:55 -0700 Subject: Delete sdl-1.2.12 Change-Id: Ia96f80df04035ae84be3af468c945f2cec14f99c --- distrib/sdl-1.2.12/src/video/SDL_pixels.c | 625 ------------------------------ 1 file changed, 625 deletions(-) delete mode 100644 distrib/sdl-1.2.12/src/video/SDL_pixels.c (limited to 'distrib/sdl-1.2.12/src/video/SDL_pixels.c') 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)<Rshift); - format->Gmask = ((0xFF>>format->Gloss)<Gshift); - format->Bmask = ((0xFF>>format->Bloss)<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<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<Gloss; - for(i=format->Gloss;i>0;i-=Gw) - Gm|=1<Bloss; - for(i=format->Bloss;i>0;i-=Bw) - Bm|=1<Aloss; - for(i=format->Aloss;i>0;i-=Aw) - Am|=1<>format->Rshift; - r=(r<Rloss)|((r*Rm)>>Rw); - format->palette->colors[i].r=r; - - g=(i&Gmask)>>format->Gshift; - g=(g<Gloss)|((g*Gm)>>Gw); - format->palette->colors[i].g=g; - - b=(i&Bmask)>>format->Bshift; - b=(b<Bloss)|((b*Bm)>>Bw); - format->palette->colors[i].b=b; - -#ifdef ENABLE_PALETTE_ALPHA - a=(i&Amask)>>format->Ashift; - a=(a<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; incolors; ++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> 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; incolors; ++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; incolors; ++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); - } -} -- cgit v1.1