diff options
Diffstat (limited to 'distrib/sdl-1.2.12/src/video/SDL_yuv.c')
| -rw-r--r-- | distrib/sdl-1.2.12/src/video/SDL_yuv.c | 150 |
1 files changed, 0 insertions, 150 deletions
diff --git a/distrib/sdl-1.2.12/src/video/SDL_yuv.c b/distrib/sdl-1.2.12/src/video/SDL_yuv.c deleted file mode 100644 index 1136ceb..0000000 --- a/distrib/sdl-1.2.12/src/video/SDL_yuv.c +++ /dev/null @@ -1,150 +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" - -/* This is the implementation of the YUV video surface support */ - -#include "SDL_video.h" -#include "SDL_sysvideo.h" -#include "SDL_yuvfuncs.h" -#include "SDL_yuv_sw_c.h" - - -SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format, - SDL_Surface *display) -{ - SDL_VideoDevice *video = current_video; - SDL_VideoDevice *this = current_video; - const char *yuv_hwaccel; - SDL_Overlay *overlay; - - if ( (display->flags & SDL_OPENGL) == SDL_OPENGL ) { - SDL_SetError("YUV overlays are not supported in OpenGL mode"); - return NULL; - } - - /* Display directly on video surface, if possible */ - if ( SDL_getenv("SDL_VIDEO_YUV_DIRECT") ) { - if ( (display == SDL_PublicSurface) && - ((SDL_VideoSurface->format->BytesPerPixel == 2) || - (SDL_VideoSurface->format->BytesPerPixel == 4)) ) { - display = SDL_VideoSurface; - } - } - overlay = NULL; - yuv_hwaccel = SDL_getenv("SDL_VIDEO_YUV_HWACCEL"); - if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) && - (!yuv_hwaccel || (SDL_atoi(yuv_hwaccel) > 0)) ) { - overlay = video->CreateYUVOverlay(this, w, h, format, display); - } - /* If hardware YUV overlay failed ... */ - if ( overlay == NULL ) { - overlay = SDL_CreateYUV_SW(this, w, h, format, display); - } - return overlay; -} - -int SDL_LockYUVOverlay(SDL_Overlay *overlay) -{ - if ( overlay == NULL ) { - SDL_SetError("Passed NULL overlay"); - return -1; - } - return overlay->hwfuncs->Lock(current_video, overlay); -} - -void SDL_UnlockYUVOverlay(SDL_Overlay *overlay) -{ - if ( overlay == NULL ) { - return; - } - overlay->hwfuncs->Unlock(current_video, overlay); -} - -int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect) -{ - SDL_Rect src, dst; - int srcx, srcy, srcw, srch; - int dstx, dsty, dstw, dsth; - - if ( overlay == NULL || dstrect == NULL ) { - SDL_SetError("Passed NULL overlay or dstrect"); - return -1; - } - - /* Clip the rectangle to the screen area */ - srcx = 0; - srcy = 0; - srcw = overlay->w; - srch = overlay->h; - dstx = dstrect->x; - dsty = dstrect->y; - dstw = dstrect->w; - dsth = dstrect->h; - if ( dstx < 0 ) { - srcw += (dstx * overlay->w) / dstrect->w; - dstw += dstx; - srcx -= (dstx * overlay->w) / dstrect->w; - dstx = 0; - } - if ( (dstx+dstw) > current_video->screen->w ) { - int extra = (dstx+dstw - current_video->screen->w); - srcw -= (extra * overlay->w) / dstrect->w; - dstw -= extra; - } - if ( dsty < 0 ) { - srch += (dsty * overlay->h) / dstrect->h; - dsth += dsty; - srcy -= (dsty * overlay->h) / dstrect->h; - dsty = 0; - } - if ( (dsty+dsth) > current_video->screen->h ) { - int extra = (dsty+dsth - current_video->screen->h); - srch -= (extra * overlay->h) / dstrect->h; - dsth -= extra; - } - if ( srcw <= 0 || srch <= 0 || - srch <= 0 || dsth <= 0 ) { - return 0; - } - /* Ugh, I can't wait for SDL_Rect to be int values */ - src.x = srcx; - src.y = srcy; - src.w = srcw; - src.h = srch; - dst.x = dstx; - dst.y = dsty; - dst.w = dstw; - dst.h = dsth; - return overlay->hwfuncs->Display(current_video, overlay, &src, &dst); -} - -void SDL_FreeYUVOverlay(SDL_Overlay *overlay) -{ - if ( overlay == NULL ) { - return; - } - if ( overlay->hwfuncs ) { - overlay->hwfuncs->FreeHW(current_video, overlay); - } - SDL_free(overlay); -} |