Mercurial > sdl-ios-xcode
annotate src/video/SDL_yuv.c @ 4236:1fc8c8a5ff00 SDL-1.2
Fixed endianness issues with fullscreen mode
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 23 Sep 2009 06:56:28 +0000 |
| parents | a1b03ba2fcd0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
13 Lesser General Public License for more details. |
| 0 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
81
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
|
1402
d910939febfa
Use consistent identifiers for the various platforms we support.
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* This is the implementation of the YUV video surface support */ | |
| 25 | |
| 26 #include "SDL_video.h" | |
| 27 #include "SDL_sysvideo.h" | |
| 28 #include "SDL_yuvfuncs.h" | |
| 29 #include "SDL_yuv_sw_c.h" | |
| 30 | |
| 31 | |
| 32 SDL_Overlay *SDL_CreateYUVOverlay(int w, int h, Uint32 format, | |
| 33 SDL_Surface *display) | |
| 34 { | |
| 35 SDL_VideoDevice *video = current_video; | |
| 36 SDL_VideoDevice *this = current_video; | |
| 37 const char *yuv_hwaccel; | |
| 38 SDL_Overlay *overlay; | |
| 39 | |
|
760
cf9dd3aa6756
Oops, we only want to fail creation if the display surface is an OpenGL surface.
Sam Lantinga <slouken@libsdl.org>
parents:
660
diff
changeset
|
40 if ( (display->flags & SDL_OPENGL) == SDL_OPENGL ) { |
|
660
73440ac574a2
You can't create a YUV overlay in OpenGL mode
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
41 SDL_SetError("YUV overlays are not supported in OpenGL mode"); |
|
73440ac574a2
You can't create a YUV overlay in OpenGL mode
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
42 return NULL; |
|
73440ac574a2
You can't create a YUV overlay in OpenGL mode
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
43 } |
| 0 | 44 |
| 45 /* Display directly on video surface, if possible */ | |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
46 if ( SDL_getenv("SDL_VIDEO_YUV_DIRECT") ) { |
|
81
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
47 if ( (display == SDL_PublicSurface) && |
|
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
48 ((SDL_VideoSurface->format->BytesPerPixel == 2) || |
|
1a2723474f12
Added the SDL_VIDEO_YUV_DIRECT hack for better performance when the
Sam Lantinga <slouken@lokigames.com>
parents:
0
diff
changeset
|
49 (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
|
50 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
|
51 } |
| 0 | 52 } |
|
660
73440ac574a2
You can't create a YUV overlay in OpenGL mode
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
53 overlay = NULL; |
|
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
54 yuv_hwaccel = SDL_getenv("SDL_VIDEO_YUV_HWACCEL"); |
| 0 | 55 if ( ((display == SDL_VideoSurface) && video->CreateYUVOverlay) && |
|
1341
d02b552e5304
Configure dynamically generates SDL_config.h
Sam Lantinga <slouken@libsdl.org>
parents:
1338
diff
changeset
|
56 (!yuv_hwaccel || (SDL_atoi(yuv_hwaccel) > 0)) ) { |
| 0 | 57 overlay = video->CreateYUVOverlay(this, w, h, format, display); |
| 58 } | |
| 59 /* If hardware YUV overlay failed ... */ | |
| 60 if ( overlay == NULL ) { | |
| 61 overlay = SDL_CreateYUV_SW(this, w, h, format, display); | |
| 62 } | |
| 63 return overlay; | |
| 64 } | |
| 65 | |
| 66 int SDL_LockYUVOverlay(SDL_Overlay *overlay) | |
| 67 { | |
| 4076 | 68 if ( overlay == NULL ) { |
| 69 SDL_SetError("Passed NULL overlay"); | |
| 70 return -1; | |
| 71 } | |
| 0 | 72 return overlay->hwfuncs->Lock(current_video, overlay); |
| 73 } | |
| 74 | |
| 75 void SDL_UnlockYUVOverlay(SDL_Overlay *overlay) | |
| 76 { | |
| 4076 | 77 if ( overlay == NULL ) { |
| 78 return; | |
| 79 } | |
| 0 | 80 overlay->hwfuncs->Unlock(current_video, overlay); |
| 81 } | |
| 82 | |
| 83 int SDL_DisplayYUVOverlay(SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 84 { | |
|
1643
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
85 SDL_Rect src, dst; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
86 int srcx, srcy, srcw, srch; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
87 int dstx, dsty, dstw, dsth; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
88 |
| 4076 | 89 if ( overlay == NULL || dstrect == NULL ) { |
| 90 SDL_SetError("Passed NULL overlay or dstrect"); | |
| 91 return -1; | |
| 92 } | |
| 93 | |
|
1643
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
94 /* Clip the rectangle to the screen area */ |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
95 srcx = 0; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
96 srcy = 0; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
97 srcw = overlay->w; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
98 srch = overlay->h; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
99 dstx = dstrect->x; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
100 dsty = dstrect->y; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
101 dstw = dstrect->w; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
102 dsth = dstrect->h; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
103 if ( dstx < 0 ) { |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
104 srcw += (dstx * overlay->w) / dstrect->w; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
105 dstw += dstx; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
106 srcx -= (dstx * overlay->w) / dstrect->w; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
107 dstx = 0; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
108 } |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
109 if ( (dstx+dstw) > current_video->screen->w ) { |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
110 int extra = (dstx+dstw - current_video->screen->w); |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
111 srcw -= (extra * overlay->w) / dstrect->w; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
112 dstw -= extra; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
113 } |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
114 if ( dsty < 0 ) { |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
115 srch += (dsty * overlay->h) / dstrect->h; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
116 dsth += dsty; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
117 srcy -= (dsty * overlay->h) / dstrect->h; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
118 dsty = 0; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
119 } |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
120 if ( (dsty+dsth) > current_video->screen->h ) { |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
121 int extra = (dsty+dsth - current_video->screen->h); |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
122 srch -= (extra * overlay->h) / dstrect->h; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
123 dsth -= extra; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
124 } |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
125 if ( srcw <= 0 || srch <= 0 || |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
126 srch <= 0 || dsth <= 0 ) { |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
127 return 0; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
128 } |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
129 /* Ugh, I can't wait for SDL_Rect to be int values */ |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
130 src.x = srcx; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
131 src.y = srcy; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
132 src.w = srcw; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
133 src.h = srch; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
134 dst.x = dstx; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
135 dst.y = dsty; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
136 dst.w = dstw; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
137 dst.h = dsth; |
|
51038e80ae59
More general fix for bug #189
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
|
138 return overlay->hwfuncs->Display(current_video, overlay, &src, &dst); |
| 0 | 139 } |
| 140 | |
| 141 void SDL_FreeYUVOverlay(SDL_Overlay *overlay) | |
| 142 { | |
| 4076 | 143 if ( overlay == NULL ) { |
| 144 return; | |
| 0 | 145 } |
| 4076 | 146 if ( overlay->hwfuncs ) { |
| 147 overlay->hwfuncs->FreeHW(current_video, overlay); | |
| 148 } | |
| 149 SDL_free(overlay); | |
| 0 | 150 } |