Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv.c @ 844:cd0c77df70a4
*** empty log message ***
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 18 Feb 2004 03:57:13 +0000 |
| parents | b8d311d90021 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
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Updated the source with the correct e-mail address
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* This is the implementation of the YUV video surface support */ | |
| 29 | |
| 30 #include <stdlib.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #include "SDL_getenv.h" | |
| 34 #include "SDL_video.h" | |
|
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You can't create a YUV overlay in OpenGL mode
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35 #include "SDL_error.h" |
| 0 | 36 #include "SDL_sysvideo.h" |
| 37 #include "SDL_yuvfuncs.h" | |
| 38 #include "SDL_yuv_sw_c.h" | |
| 39 | |
| 40 | |
| 41 SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format, | |
| 42 SDL_Surface *display) | |
| 43 { | |
| 44 SDL_VideoDevice *video = current_video; | |
| 45 SDL_VideoDevice *this = current_video; | |
| 46 const char *yuv_hwaccel; | |
| 47 SDL_Overlay *overlay; | |
| 48 | |
|
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Oops, we only want to fail creation if the display surface is an OpenGL surface.
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49 if ( (display->flags & SDL_OPENGL) == SDL_OPENGL ) { |
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50 SDL_SetError("YUV overlays are not supported in OpenGL mode"); |
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51 return NULL; |
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You can't create a YUV overlay in OpenGL mode
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52 } |
| 0 | 53 |
| 54 /* Display directly on video surface, if possible */ | |
|
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Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
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55 if ( getenv("SDL_VIDEO_YUV_DIRECT") ) { |
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Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
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56 if ( (display == SDL_PublicSurface) && |
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57 ((SDL_VideoSurface->format->BytesPerPixel == 2) || |
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Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
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58 (SDL_VideoSurface->format->BytesPerPixel == 4)) ) { |
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Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
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59 display = SDL_VideoSurface; |
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1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
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changeset
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60 } |
| 0 | 61 } |
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You can't create a YUV overlay in OpenGL mode
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
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62 overlay = NULL; |
| 0 | 63 yuv_hwaccel = getenv("SDL_VIDEO_YUV_HWACCEL"); |
| 64 if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) && | |
| 65 (!yuv_hwaccel || (atoi(yuv_hwaccel) > 0)) ) { | |
| 66 overlay = video->CreateYUVOverlay(this, w, h, format, display); | |
| 67 } | |
| 68 /* If hardware YUV overlay failed ... */ | |
| 69 if ( overlay == NULL ) { | |
| 70 overlay = SDL_CreateYUV_SW(this, w, h, format, display); | |
| 71 } | |
| 72 return overlay; | |
| 73 } | |
| 74 | |
| 75 int SDL_LockYUVOverlay(SDL_Overlay *overlay) | |
| 76 { | |
| 77 return overlay->hwfuncs->Lock(current_video, overlay); | |
| 78 } | |
| 79 | |
| 80 void SDL_UnlockYUVOverlay(SDL_Overlay *overlay) | |
| 81 { | |
| 82 overlay->hwfuncs->Unlock(current_video, overlay); | |
| 83 } | |
| 84 | |
| 85 int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 86 { | |
| 87 return overlay->hwfuncs->Display(current_video, overlay, dstrect); | |
| 88 } | |
| 89 | |
| 90 void SDL_FreeYUVOverlay(SDL_Overlay *overlay) | |
| 91 { | |
| 92 if ( overlay ) { | |
| 93 if ( overlay->hwfuncs ) { | |
| 94 overlay->hwfuncs->FreeHW(current_video, overlay); | |
| 95 } | |
| 96 free(overlay); | |
| 97 } | |
| 98 } |