Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv.c @ 1341:d02b552e5304
Configure dynamically generates SDL_config.h
I'm still wrestling with autoheader, but this should work for now...
Fixed lots of build problems with C library support disabled
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 07 Feb 2006 12:11:33 +0000 |
| parents | 604d73db6802 |
| children | c71e05b4dc2e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
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parents:
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15 You should have received a copy of the GNU Lesser General Public |
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c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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16 License along with this library; if not, write to the Free Software |
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* This is the implementation of the YUV video surface support */ | |
| 24 | |
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25 #include "SDL_stdlib.h" |
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26 #include "SDL_string.h" |
| 0 | 27 #include "SDL_video.h" |
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28 #include "SDL_error.h" |
| 0 | 29 #include "SDL_sysvideo.h" |
| 30 #include "SDL_yuvfuncs.h" | |
| 31 #include "SDL_yuv_sw_c.h" | |
| 32 | |
| 33 | |
| 34 SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format, | |
| 35 SDL_Surface *display) | |
| 36 { | |
| 37 SDL_VideoDevice *video = current_video; | |
| 38 SDL_VideoDevice *this = current_video; | |
| 39 const char *yuv_hwaccel; | |
| 40 SDL_Overlay *overlay; | |
| 41 | |
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Oops, we only want to fail creation if the display surface is an OpenGL surface.
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42 if ( (display->flags & SDL_OPENGL) == SDL_OPENGL ) { |
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43 SDL_SetError("YUV overlays are not supported in OpenGL mode"); |
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44 return NULL; |
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45 } |
| 0 | 46 |
| 47 /* Display directly on video surface, if possible */ | |
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48 if ( SDL_getenv("SDL_VIDEO_YUV_DIRECT") ) { |
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49 if ( (display == SDL_PublicSurface) && |
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50 ((SDL_VideoSurface->format->BytesPerPixel == 2) || |
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51 (SDL_VideoSurface->format->BytesPerPixel == 4)) ) { |
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52 display = SDL_VideoSurface; |
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53 } |
| 0 | 54 } |
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55 overlay = NULL; |
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parents:
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diff
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56 yuv_hwaccel = SDL_getenv("SDL_VIDEO_YUV_HWACCEL"); |
| 0 | 57 if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) && |
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Configure dynamically generates SDL_config.h
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58 (!yuv_hwaccel || (SDL_atoi(yuv_hwaccel) > 0)) ) { |
| 0 | 59 overlay = video->CreateYUVOverlay(this, w, h, format, display); |
| 60 } | |
| 61 /* If hardware YUV overlay failed ... */ | |
| 62 if ( overlay == NULL ) { | |
| 63 overlay = SDL_CreateYUV_SW(this, w, h, format, display); | |
| 64 } | |
| 65 return overlay; | |
| 66 } | |
| 67 | |
| 68 int SDL_LockYUVOverlay(SDL_Overlay *overlay) | |
| 69 { | |
| 70 return overlay->hwfuncs->Lock(current_video, overlay); | |
| 71 } | |
| 72 | |
| 73 void SDL_UnlockYUVOverlay(SDL_Overlay *overlay) | |
| 74 { | |
| 75 overlay->hwfuncs->Unlock(current_video, overlay); | |
| 76 } | |
| 77 | |
| 78 int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 79 { | |
| 80 return overlay->hwfuncs->Display(current_video, overlay, dstrect); | |
| 81 } | |
| 82 | |
| 83 void SDL_FreeYUVOverlay(SDL_Overlay *overlay) | |
| 84 { | |
| 85 if ( overlay ) { | |
| 86 if ( overlay->hwfuncs ) { | |
| 87 overlay->hwfuncs->FreeHW(current_video, overlay); | |
| 88 } | |
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89 SDL_free(overlay); |
| 0 | 90 } |
| 91 } |