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Diffstat (limited to 'distrib/sdl-1.2.12/src/video/SDL_blit_0.c')
-rw-r--r--distrib/sdl-1.2.12/src/video/SDL_blit_0.c471
1 files changed, 0 insertions, 471 deletions
diff --git a/distrib/sdl-1.2.12/src/video/SDL_blit_0.c b/distrib/sdl-1.2.12/src/video/SDL_blit_0.c
deleted file mode 100644
index 7cab3df..0000000
--- a/distrib/sdl-1.2.12/src/video/SDL_blit_0.c
+++ /dev/null
@@ -1,471 +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"
-
-#include "SDL_video.h"
-#include "SDL_blit.h"
-
-/* Functions to blit from bitmaps to other surfaces */
-
-static void BlitBto1(SDL_BlitInfo *info)
-{
- int c;
- int width, height;
- Uint8 *src, *map, *dst;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->d_width;
- height = info->d_height;
- src = info->s_pixels;
- srcskip = info->s_skip;
- dst = info->d_pixels;
- dstskip = info->d_skip;
- map = info->table;
- srcskip += width-(width+7)/8;
-
- if ( map ) {
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( 1 ) {
- *dst = map[bit];
- }
- dst++;
- byte <<= 1;
- }
- src += srcskip;
- dst += dstskip;
- }
- } else {
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( 1 ) {
- *dst = bit;
- }
- dst++;
- byte <<= 1;
- }
- src += srcskip;
- dst += dstskip;
- }
- }
-}
-static void BlitBto2(SDL_BlitInfo *info)
-{
- int c;
- int width, height;
- Uint8 *src;
- Uint16 *map, *dst;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->d_width;
- height = info->d_height;
- src = info->s_pixels;
- srcskip = info->s_skip;
- dst = (Uint16 *)info->d_pixels;
- dstskip = info->d_skip/2;
- map = (Uint16 *)info->table;
- srcskip += width-(width+7)/8;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( 1 ) {
- *dst = map[bit];
- }
- byte <<= 1;
- dst++;
- }
- src += srcskip;
- dst += dstskip;
- }
-}
-static void BlitBto3(SDL_BlitInfo *info)
-{
- int c, o;
- int width, height;
- Uint8 *src, *map, *dst;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->d_width;
- height = info->d_height;
- src = info->s_pixels;
- srcskip = info->s_skip;
- dst = info->d_pixels;
- dstskip = info->d_skip;
- map = info->table;
- srcskip += width-(width+7)/8;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( 1 ) {
- o = bit * 4;
- dst[0] = map[o++];
- dst[1] = map[o++];
- dst[2] = map[o++];
- }
- byte <<= 1;
- dst += 3;
- }
- src += srcskip;
- dst += dstskip;
- }
-}
-static void BlitBto4(SDL_BlitInfo *info)
-{
- int width, height;
- Uint8 *src;
- Uint32 *map, *dst;
- int srcskip, dstskip;
- int c;
-
- /* Set up some basic variables */
- width = info->d_width;
- height = info->d_height;
- src = info->s_pixels;
- srcskip = info->s_skip;
- dst = (Uint32 *)info->d_pixels;
- dstskip = info->d_skip/4;
- map = (Uint32 *)info->table;
- srcskip += width-(width+7)/8;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( 1 ) {
- *dst = map[bit];
- }
- byte <<= 1;
- dst++;
- }
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void BlitBto1Key(SDL_BlitInfo *info)
-{
- int width = info->d_width;
- int height = info->d_height;
- Uint8 *src = info->s_pixels;
- Uint8 *dst = info->d_pixels;
- int srcskip = info->s_skip;
- int dstskip = info->d_skip;
- Uint32 ckey = info->src->colorkey;
- Uint8 *palmap = info->table;
- int c;
-
- /* Set up some basic variables */
- srcskip += width-(width+7)/8;
-
- if ( palmap ) {
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( bit != ckey ) {
- *dst = palmap[bit];
- }
- dst++;
- byte <<= 1;
- }
- src += srcskip;
- dst += dstskip;
- }
- } else {
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( bit != ckey ) {
- *dst = bit;
- }
- dst++;
- byte <<= 1;
- }
- src += srcskip;
- dst += dstskip;
- }
- }
-}
-
-static void BlitBto2Key(SDL_BlitInfo *info)
-{
- int width = info->d_width;
- int height = info->d_height;
- Uint8 *src = info->s_pixels;
- Uint16 *dstp = (Uint16 *)info->d_pixels;
- int srcskip = info->s_skip;
- int dstskip = info->d_skip;
- Uint32 ckey = info->src->colorkey;
- Uint8 *palmap = info->table;
- int c;
-
- /* Set up some basic variables */
- srcskip += width-(width+7)/8;
- dstskip /= 2;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( bit != ckey ) {
- *dstp=((Uint16 *)palmap)[bit];
- }
- byte <<= 1;
- dstp++;
- }
- src += srcskip;
- dstp += dstskip;
- }
-}
-
-static void BlitBto3Key(SDL_BlitInfo *info)
-{
- int width = info->d_width;
- int height = info->d_height;
- Uint8 *src = info->s_pixels;
- Uint8 *dst = info->d_pixels;
- int srcskip = info->s_skip;
- int dstskip = info->d_skip;
- Uint32 ckey = info->src->colorkey;
- Uint8 *palmap = info->table;
- int c;
-
- /* Set up some basic variables */
- srcskip += width-(width+7)/8;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( bit != ckey ) {
- SDL_memcpy(dst, &palmap[bit*4], 3);
- }
- byte <<= 1;
- dst += 3;
- }
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void BlitBto4Key(SDL_BlitInfo *info)
-{
- int width = info->d_width;
- int height = info->d_height;
- Uint8 *src = info->s_pixels;
- Uint32 *dstp = (Uint32 *)info->d_pixels;
- int srcskip = info->s_skip;
- int dstskip = info->d_skip;
- Uint32 ckey = info->src->colorkey;
- Uint8 *palmap = info->table;
- int c;
-
- /* Set up some basic variables */
- srcskip += width-(width+7)/8;
- dstskip /= 4;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( bit != ckey ) {
- *dstp=((Uint32 *)palmap)[bit];
- }
- byte <<= 1;
- dstp++;
- }
- src += srcskip;
- dstp += dstskip;
- }
-}
-
-static void BlitBtoNAlpha(SDL_BlitInfo *info)
-{
- int width = info->d_width;
- int height = info->d_height;
- Uint8 *src = info->s_pixels;
- Uint8 *dst = info->d_pixels;
- int srcskip = info->s_skip;
- int dstskip = info->d_skip;
- const SDL_Color *srcpal = info->src->palette->colors;
- SDL_PixelFormat *dstfmt = info->dst;
- int dstbpp;
- int c;
- const int A = info->src->alpha;
-
- /* Set up some basic variables */
- dstbpp = dstfmt->BytesPerPixel;
- srcskip += width-(width+7)/8;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( 1 ) {
- Uint32 pixel;
- unsigned sR, sG, sB;
- unsigned dR, dG, dB;
- sR = srcpal[bit].r;
- sG = srcpal[bit].g;
- sB = srcpal[bit].b;
- DISEMBLE_RGB(dst, dstbpp, dstfmt,
- pixel, dR, dG, dB);
- ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB);
- ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB);
- }
- byte <<= 1;
- dst += dstbpp;
- }
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void BlitBtoNAlphaKey(SDL_BlitInfo *info)
-{
- int width = info->d_width;
- int height = info->d_height;
- Uint8 *src = info->s_pixels;
- Uint8 *dst = info->d_pixels;
- int srcskip = info->s_skip;
- int dstskip = info->d_skip;
- SDL_PixelFormat *srcfmt = info->src;
- SDL_PixelFormat *dstfmt = info->dst;
- const SDL_Color *srcpal = srcfmt->palette->colors;
- int dstbpp;
- int c;
- const int A = srcfmt->alpha;
- Uint32 ckey = srcfmt->colorkey;
-
- /* Set up some basic variables */
- dstbpp = dstfmt->BytesPerPixel;
- srcskip += width-(width+7)/8;
-
- while ( height-- ) {
- Uint8 byte = 0, bit;
- for ( c=0; c<width; ++c ) {
- if ( (c&7) == 0 ) {
- byte = *src++;
- }
- bit = (byte&0x80)>>7;
- if ( bit != ckey ) {
- int sR, sG, sB;
- int dR, dG, dB;
- Uint32 pixel;
- sR = srcpal[bit].r;
- sG = srcpal[bit].g;
- sB = srcpal[bit].b;
- DISEMBLE_RGB(dst, dstbpp, dstfmt,
- pixel, dR, dG, dB);
- ALPHA_BLEND(sR, sG, sB, A, dR, dG, dB);
- ASSEMBLE_RGB(dst, dstbpp, dstfmt, dR, dG, dB);
- }
- byte <<= 1;
- dst += dstbpp;
- }
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static SDL_loblit bitmap_blit[] = {
- NULL, BlitBto1, BlitBto2, BlitBto3, BlitBto4
-};
-
-static SDL_loblit colorkey_blit[] = {
- NULL, BlitBto1Key, BlitBto2Key, BlitBto3Key, BlitBto4Key
-};
-
-SDL_loblit SDL_CalculateBlit0(SDL_Surface *surface, int blit_index)
-{
- int which;
-
- if ( surface->format->BitsPerPixel != 1 ) {
- /* We don't support sub 8-bit packed pixel modes */
- return NULL;
- }
- if ( surface->map->dst->format->BitsPerPixel < 8 ) {
- which = 0;
- } else {
- which = surface->map->dst->format->BytesPerPixel;
- }
- switch(blit_index) {
- case 0: /* copy */
- return bitmap_blit[which];
-
- case 1: /* colorkey */
- return colorkey_blit[which];
-
- case 2: /* alpha */
- return which >= 2 ? BlitBtoNAlpha : NULL;
-
- case 4: /* alpha + colorkey */
- return which >= 2 ? BlitBtoNAlphaKey : NULL;
- }
- return NULL;
-}
-
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