Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv.c @ 571:8e3ce997621c
Date: Thu, 16 Jan 2003 13:48:31 +0200
From: "Mike Gorchak"
Subject: All QNX patches
whole patches concerning QNX. Almost all code has been rewritten by Julian
and me. Added initial support for hw overlays in QNX and many many others
fixes.
P.S. This patches has been reviewed by Dave Rempel from QSSL and included in
SDL 1.2.5 distribution, which coming on 3rd party CD for newest 6.2.1
version of QNX, which will be available soon.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 20 Jan 2003 01:38:37 +0000 |
| parents | f6ffac90895c |
| children | 73440ac574a2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
297
f6ffac90895c
Updated copyright information for 2002
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 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" | |
| 35 #include "SDL_sysvideo.h" | |
| 36 #include "SDL_yuvfuncs.h" | |
| 37 #include "SDL_yuv_sw_c.h" | |
| 38 | |
| 39 | |
| 40 SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format, | |
| 41 SDL_Surface *display) | |
| 42 { | |
| 43 SDL_VideoDevice *video = current_video; | |
| 44 SDL_VideoDevice *this = current_video; | |
| 45 const char *yuv_hwaccel; | |
| 46 SDL_Overlay *overlay; | |
| 47 | |
| 48 overlay = NULL; | |
| 49 | |
| 50 /* Display directly on video surface, if possible */ | |
|
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51 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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52 if ( (display == SDL_PublicSurface) && |
|
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
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53 ((SDL_VideoSurface->format->BytesPerPixel == 2) || |
|
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
parents:
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54 (SDL_VideoSurface->format->BytesPerPixel == 4)) ) { |
|
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
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55 display = SDL_VideoSurface; |
|
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
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56 } |
| 0 | 57 } |
| 58 yuv_hwaccel = getenv("SDL_VIDEO_YUV_HWACCEL"); | |
| 59 if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) && | |
| 60 (!yuv_hwaccel || (atoi(yuv_hwaccel) > 0)) ) { | |
| 61 overlay = video->CreateYUVOverlay(this, w, h, format, display); | |
| 62 } | |
| 63 /* If hardware YUV overlay failed ... */ | |
| 64 if ( overlay == NULL ) { | |
| 65 overlay = SDL_CreateYUV_SW(this, w, h, format, display); | |
| 66 } | |
| 67 return overlay; | |
| 68 } | |
| 69 | |
| 70 int SDL_LockYUVOverlay(SDL_Overlay *overlay) | |
| 71 { | |
| 72 return overlay->hwfuncs->Lock(current_video, overlay); | |
| 73 } | |
| 74 | |
| 75 void SDL_UnlockYUVOverlay(SDL_Overlay *overlay) | |
| 76 { | |
| 77 overlay->hwfuncs->Unlock(current_video, overlay); | |
| 78 } | |
| 79 | |
| 80 int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 81 { | |
| 82 return overlay->hwfuncs->Display(current_video, overlay, dstrect); | |
| 83 } | |
| 84 | |
| 85 void SDL_FreeYUVOverlay(SDL_Overlay *overlay) | |
| 86 { | |
| 87 if ( overlay ) { | |
| 88 if ( overlay->hwfuncs ) { | |
| 89 overlay->hwfuncs->FreeHW(current_video, overlay); | |
| 90 } | |
| 91 free(overlay); | |
| 92 } | |
| 93 } |