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Diffstat (limited to '3rdparty/SDL2/src/video/SDL_blit_1.c')
-rw-r--r--3rdparty/SDL2/src/video/SDL_blit_1.c550
1 files changed, 0 insertions, 550 deletions
diff --git a/3rdparty/SDL2/src/video/SDL_blit_1.c b/3rdparty/SDL2/src/video/SDL_blit_1.c
deleted file mode 100644
index 69c15d08df6..00000000000
--- a/3rdparty/SDL2/src/video/SDL_blit_1.c
+++ /dev/null
@@ -1,550 +0,0 @@
-/*
- Simple DirectMedia Layer
- Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-*/
-#include "../SDL_internal.h"
-
-#include "SDL_video.h"
-#include "SDL_blit.h"
-#include "SDL_sysvideo.h"
-#include "SDL_endian.h"
-
-/* Functions to blit from 8-bit surfaces to other surfaces */
-
-static void
-Blit1to1(SDL_BlitInfo * info)
-{
-#ifndef USE_DUFFS_LOOP
- int c;
-#endif
- int width, height;
- Uint8 *src, *map, *dst;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->dst_w;
- height = info->dst_h;
- src = info->src;
- srcskip = info->src_skip;
- dst = info->dst;
- dstskip = info->dst_skip;
- map = info->table;
-
- while (height--) {
-#ifdef USE_DUFFS_LOOP
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- *dst = map[*src];
- }
- dst++;
- src++;
- , width);
- /* *INDENT-ON* */
-#else
- for (c = width; c; --c) {
- *dst = map[*src];
- dst++;
- src++;
- }
-#endif
- src += srcskip;
- dst += dstskip;
- }
-}
-
-/* This is now endian dependent */
-#if ( SDL_BYTEORDER == SDL_LIL_ENDIAN )
-#define HI 1
-#define LO 0
-#else /* ( SDL_BYTEORDER == SDL_BIG_ENDIAN ) */
-#define HI 0
-#define LO 1
-#endif
-static void
-Blit1to2(SDL_BlitInfo * info)
-{
-#ifndef USE_DUFFS_LOOP
- int c;
-#endif
- int width, height;
- Uint8 *src, *dst;
- Uint16 *map;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->dst_w;
- height = info->dst_h;
- src = info->src;
- srcskip = info->src_skip;
- dst = info->dst;
- dstskip = info->dst_skip;
- map = (Uint16 *) info->table;
-
-#ifdef USE_DUFFS_LOOP
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- *(Uint16 *)dst = map[*src++];
- dst += 2;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dst += dstskip;
- }
-#else
- /* Memory align at 4-byte boundary, if necessary */
- if ((long) dst & 0x03) {
- /* Don't do anything if width is 0 */
- if (width == 0) {
- return;
- }
- --width;
-
- while (height--) {
- /* Perform copy alignment */
- *(Uint16 *) dst = map[*src++];
- dst += 2;
-
- /* Copy in 4 pixel chunks */
- for (c = width / 4; c; --c) {
- *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]);
- src += 2;
- dst += 4;
- *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]);
- src += 2;
- dst += 4;
- }
- /* Get any leftovers */
- switch (width & 3) {
- case 3:
- *(Uint16 *) dst = map[*src++];
- dst += 2;
- case 2:
- *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]);
- src += 2;
- dst += 4;
- break;
- case 1:
- *(Uint16 *) dst = map[*src++];
- dst += 2;
- break;
- }
- src += srcskip;
- dst += dstskip;
- }
- } else {
- while (height--) {
- /* Copy in 4 pixel chunks */
- for (c = width / 4; c; --c) {
- *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]);
- src += 2;
- dst += 4;
- *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]);
- src += 2;
- dst += 4;
- }
- /* Get any leftovers */
- switch (width & 3) {
- case 3:
- *(Uint16 *) dst = map[*src++];
- dst += 2;
- case 2:
- *(Uint32 *) dst = (map[src[HI]] << 16) | (map[src[LO]]);
- src += 2;
- dst += 4;
- break;
- case 1:
- *(Uint16 *) dst = map[*src++];
- dst += 2;
- break;
- }
- src += srcskip;
- dst += dstskip;
- }
- }
-#endif /* USE_DUFFS_LOOP */
-}
-
-static void
-Blit1to3(SDL_BlitInfo * info)
-{
-#ifndef USE_DUFFS_LOOP
- int c;
-#endif
- int o;
- int width, height;
- Uint8 *src, *map, *dst;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->dst_w;
- height = info->dst_h;
- src = info->src;
- srcskip = info->src_skip;
- dst = info->dst;
- dstskip = info->dst_skip;
- map = info->table;
-
- while (height--) {
-#ifdef USE_DUFFS_LOOP
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- o = *src * 4;
- dst[0] = map[o++];
- dst[1] = map[o++];
- dst[2] = map[o++];
- }
- src++;
- dst += 3;
- , width);
- /* *INDENT-ON* */
-#else
- for (c = width; c; --c) {
- o = *src * 4;
- dst[0] = map[o++];
- dst[1] = map[o++];
- dst[2] = map[o++];
- src++;
- dst += 3;
- }
-#endif /* USE_DUFFS_LOOP */
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void
-Blit1to4(SDL_BlitInfo * info)
-{
-#ifndef USE_DUFFS_LOOP
- int c;
-#endif
- int width, height;
- Uint8 *src;
- Uint32 *map, *dst;
- int srcskip, dstskip;
-
- /* Set up some basic variables */
- width = info->dst_w;
- height = info->dst_h;
- src = info->src;
- srcskip = info->src_skip;
- dst = (Uint32 *) info->dst;
- dstskip = info->dst_skip / 4;
- map = (Uint32 *) info->table;
-
- while (height--) {
-#ifdef USE_DUFFS_LOOP
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- *dst++ = map[*src++];
- , width);
- /* *INDENT-ON* */
-#else
- for (c = width / 4; c; --c) {
- *dst++ = map[*src++];
- *dst++ = map[*src++];
- *dst++ = map[*src++];
- *dst++ = map[*src++];
- }
- switch (width & 3) {
- case 3:
- *dst++ = map[*src++];
- case 2:
- *dst++ = map[*src++];
- case 1:
- *dst++ = map[*src++];
- }
-#endif /* USE_DUFFS_LOOP */
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void
-Blit1to1Key(SDL_BlitInfo * info)
-{
- int width = info->dst_w;
- int height = info->dst_h;
- Uint8 *src = info->src;
- int srcskip = info->src_skip;
- Uint8 *dst = info->dst;
- int dstskip = info->dst_skip;
- Uint8 *palmap = info->table;
- Uint32 ckey = info->colorkey;
-
- if (palmap) {
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- if ( *src != ckey ) {
- *dst = palmap[*src];
- }
- dst++;
- src++;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dst += dstskip;
- }
- } else {
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- if ( *src != ckey ) {
- *dst = *src;
- }
- dst++;
- src++;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dst += dstskip;
- }
- }
-}
-
-static void
-Blit1to2Key(SDL_BlitInfo * info)
-{
- int width = info->dst_w;
- int height = info->dst_h;
- Uint8 *src = info->src;
- int srcskip = info->src_skip;
- Uint16 *dstp = (Uint16 *) info->dst;
- int dstskip = info->dst_skip;
- Uint16 *palmap = (Uint16 *) info->table;
- Uint32 ckey = info->colorkey;
-
- /* Set up some basic variables */
- dstskip /= 2;
-
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- if ( *src != ckey ) {
- *dstp=palmap[*src];
- }
- src++;
- dstp++;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dstp += dstskip;
- }
-}
-
-static void
-Blit1to3Key(SDL_BlitInfo * info)
-{
- int width = info->dst_w;
- int height = info->dst_h;
- Uint8 *src = info->src;
- int srcskip = info->src_skip;
- Uint8 *dst = info->dst;
- int dstskip = info->dst_skip;
- Uint8 *palmap = info->table;
- Uint32 ckey = info->colorkey;
- int o;
-
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- if ( *src != ckey ) {
- o = *src * 4;
- dst[0] = palmap[o++];
- dst[1] = palmap[o++];
- dst[2] = palmap[o++];
- }
- src++;
- dst += 3;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void
-Blit1to4Key(SDL_BlitInfo * info)
-{
- int width = info->dst_w;
- int height = info->dst_h;
- Uint8 *src = info->src;
- int srcskip = info->src_skip;
- Uint32 *dstp = (Uint32 *) info->dst;
- int dstskip = info->dst_skip;
- Uint32 *palmap = (Uint32 *) info->table;
- Uint32 ckey = info->colorkey;
-
- /* Set up some basic variables */
- dstskip /= 4;
-
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- if ( *src != ckey ) {
- *dstp = palmap[*src];
- }
- src++;
- dstp++;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dstp += dstskip;
- }
-}
-
-static void
-Blit1toNAlpha(SDL_BlitInfo * info)
-{
- int width = info->dst_w;
- int height = info->dst_h;
- Uint8 *src = info->src;
- int srcskip = info->src_skip;
- Uint8 *dst = info->dst;
- int dstskip = info->dst_skip;
- SDL_PixelFormat *dstfmt = info->dst_fmt;
- const SDL_Color *srcpal = info->src_fmt->palette->colors;
- int dstbpp;
- Uint32 pixel;
- unsigned sR, sG, sB;
- unsigned dR, dG, dB, dA;
- const unsigned A = info->a;
-
- /* Set up some basic variables */
- dstbpp = dstfmt->BytesPerPixel;
-
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP4(
- {
- sR = srcpal[*src].r;
- sG = srcpal[*src].g;
- sB = srcpal[*src].b;
- DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA);
- ALPHA_BLEND_RGBA(sR, sG, sB, A, dR, dG, dB, dA);
- ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA);
- src++;
- dst += dstbpp;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static void
-Blit1toNAlphaKey(SDL_BlitInfo * info)
-{
- int width = info->dst_w;
- int height = info->dst_h;
- Uint8 *src = info->src;
- int srcskip = info->src_skip;
- Uint8 *dst = info->dst;
- int dstskip = info->dst_skip;
- SDL_PixelFormat *dstfmt = info->dst_fmt;
- const SDL_Color *srcpal = info->src_fmt->palette->colors;
- Uint32 ckey = info->colorkey;
- int dstbpp;
- Uint32 pixel;
- unsigned sR, sG, sB;
- unsigned dR, dG, dB, dA;
- const unsigned A = info->a;
-
- /* Set up some basic variables */
- dstbpp = dstfmt->BytesPerPixel;
-
- while (height--) {
- /* *INDENT-OFF* */
- DUFFS_LOOP(
- {
- if ( *src != ckey ) {
- sR = srcpal[*src].r;
- sG = srcpal[*src].g;
- sB = srcpal[*src].b;
- DISEMBLE_RGBA(dst, dstbpp, dstfmt, pixel, dR, dG, dB, dA);
- ALPHA_BLEND_RGBA(sR, sG, sB, A, dR, dG, dB, dA);
- ASSEMBLE_RGBA(dst, dstbpp, dstfmt, dR, dG, dB, dA);
- }
- src++;
- dst += dstbpp;
- },
- width);
- /* *INDENT-ON* */
- src += srcskip;
- dst += dstskip;
- }
-}
-
-static const SDL_BlitFunc one_blit[] = {
- (SDL_BlitFunc) NULL, Blit1to1, Blit1to2, Blit1to3, Blit1to4
-};
-
-static const SDL_BlitFunc one_blitkey[] = {
- (SDL_BlitFunc) NULL, Blit1to1Key, Blit1to2Key, Blit1to3Key, Blit1to4Key
-};
-
-SDL_BlitFunc
-SDL_CalculateBlit1(SDL_Surface * surface)
-{
- int which;
- SDL_PixelFormat *dstfmt;
-
- dstfmt = surface->map->dst->format;
- if (dstfmt->BitsPerPixel < 8) {
- which = 0;
- } else {
- which = dstfmt->BytesPerPixel;
- }
- switch (surface->map->info.flags & ~SDL_COPY_RLE_MASK) {
- case 0:
- return one_blit[which];
-
- case SDL_COPY_COLORKEY:
- return one_blitkey[which];
-
- case SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
- /* Supporting 8bpp->8bpp alpha is doable but requires lots of
- tables which consume space and takes time to precompute,
- so is better left to the user */
- return which >= 2 ? Blit1toNAlpha : (SDL_BlitFunc) NULL;
-
- case SDL_COPY_COLORKEY | SDL_COPY_MODULATE_ALPHA | SDL_COPY_BLEND:
- return which >= 2 ? Blit1toNAlphaKey : (SDL_BlitFunc) NULL;
- }
- return (SDL_BlitFunc) NULL;
-}
-
-/* vi: set ts=4 sw=4 expandtab: */