Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11yuv.c @ 288:2f5a6062db86
Updated for Watcom C++ and LCC compilers
author | Sam Lantinga <slouken@libsdl.org> |
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date | Thu, 28 Feb 2002 00:28:26 +0000 |
parents | e8157fcb3114 |
children | eadc0746dfaf |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga | |
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 | |
252
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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 XFree86 Xv extension implementation of YUV video overlays */ | |
29 | |
30 #ifdef XFREE86_XV | |
31 | |
32 #include <stdlib.h> | |
33 #include <string.h> | |
34 #include <X11/Xlib.h> | |
35 #include <sys/ipc.h> | |
36 #include <sys/shm.h> | |
37 #include <X11/extensions/XShm.h> | |
38 #include <X11/extensions/Xvlib.h> | |
39 | |
40 #include "SDL_error.h" | |
41 #include "SDL_video.h" | |
42 #include "SDL_x11yuv_c.h" | |
43 #include "SDL_yuvfuncs.h" | |
44 | |
45 #define XFREE86_REFRESH_HACK | |
46 #ifdef XFREE86_REFRESH_HACK | |
47 #include "SDL_x11image_c.h" | |
48 #endif | |
49 | |
50 /* Workaround when pitch != width */ | |
51 #define PITCH_WORKAROUND | |
52 | |
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53 /* Fix for the NVidia GeForce 2 - use the last available adaptor */ |
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54 #define USE_LAST_ADAPTOR |
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55 |
0 | 56 /* The functions used to manipulate software video overlays */ |
57 static struct private_yuvhwfuncs x11_yuvfuncs = { | |
58 X11_LockYUVOverlay, | |
59 X11_UnlockYUVOverlay, | |
60 X11_DisplayYUVOverlay, | |
61 X11_FreeYUVOverlay | |
62 }; | |
63 | |
64 struct private_yuvhwdata { | |
65 int port; | |
66 XShmSegmentInfo yuvshm; | |
67 XvImage *image; | |
68 }; | |
69 | |
70 | |
71 SDL_Overlay *X11_CreateYUVOverlay(_THIS, int width, int height, Uint32 format, SDL_Surface *display) | |
72 { | |
73 SDL_Overlay *overlay; | |
74 struct private_yuvhwdata *hwdata; | |
75 int xv_port; | |
76 int i, j, k; | |
77 int adaptors; | |
78 XvAdaptorInfo *ainfo; | |
79 XShmSegmentInfo *yuvshm; | |
80 | |
81 /* Look for the XVideo extension with a valid port for this format */ | |
82 xv_port = -1; | |
83 if ( (Success == XvQueryExtension(GFX_Display, &j, &j, &j, &j, &j)) && | |
84 (Success == XvQueryAdaptors(GFX_Display, | |
85 RootWindow(GFX_Display, SDL_Screen), | |
86 &adaptors, &ainfo)) ) { | |
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87 #ifdef USE_LAST_ADAPTOR |
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88 for ( i=0; i < adaptors; ++i ) { |
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89 #else |
0 | 90 for ( i=0; (i < adaptors) && (xv_port == -1); ++i ) { |
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91 #endif /* USE_LAST_ADAPTOR */ |
0 | 92 /* Check to see if the visual can be used */ |
93 if ( BUGGY_XFREE86(<=, 4001) ) { | |
94 int visual_ok = 0; | |
95 for ( j=0; j<ainfo[i].num_formats; ++j ) { | |
96 if ( ainfo[i].formats[j].visual_id == | |
97 SDL_Visual->visualid ) { | |
98 visual_ok = 1; | |
99 break; | |
100 } | |
101 } | |
102 if ( ! visual_ok ) { | |
103 continue; | |
104 } | |
105 } | |
106 if ( (ainfo[i].type & XvInputMask) && | |
107 (ainfo[i].type & XvImageMask) ) { | |
108 int num_formats; | |
109 XvImageFormatValues *formats; | |
110 formats = XvListImageFormats(GFX_Display, | |
111 ainfo[i].base_id, &num_formats); | |
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112 #ifdef USE_LAST_ADAPTOR |
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113 for ( j=0; j < num_formats; ++j ) { |
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114 #else |
0 | 115 for ( j=0; (j < num_formats) && (xv_port == -1); ++j ) { |
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116 #endif /* USE_LAST_ADAPTOR */ |
0 | 117 if ( (Uint32)formats[j].id == format ) { |
118 for ( k=0; k < ainfo[i].num_ports; ++k ) { | |
119 if ( Success == XvGrabPort(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) { | |
120 xv_port = ainfo[i].base_id+k; | |
121 break; | |
122 } | |
123 } | |
124 } | |
125 } | |
126 } | |
127 } | |
128 } | |
129 if ( xv_port == -1 ) { | |
130 SDL_SetError("No available video ports for requested format"); | |
131 return(NULL); | |
132 } | |
133 | |
134 /* Create the overlay structure */ | |
135 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
136 if ( overlay == NULL ) { | |
137 XvUngrabPort(GFX_Display, xv_port, CurrentTime); | |
138 SDL_OutOfMemory(); | |
139 return(NULL); | |
140 } | |
141 memset(overlay, 0, (sizeof *overlay)); | |
142 | |
143 /* Fill in the basic members */ | |
144 overlay->format = format; | |
145 overlay->w = width; | |
146 overlay->h = height; | |
147 | |
148 /* Set up the YUV surface function structure */ | |
149 overlay->hwfuncs = &x11_yuvfuncs; | |
150 overlay->hw_overlay = 1; | |
151 | |
152 /* Create the pixel data and lookup tables */ | |
153 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata); | |
154 overlay->hwdata = hwdata; | |
155 if ( hwdata == NULL ) { | |
156 XvUngrabPort(GFX_Display, xv_port, CurrentTime); | |
157 SDL_OutOfMemory(); | |
158 SDL_FreeYUVOverlay(overlay); | |
159 return(NULL); | |
160 } | |
161 yuvshm = &hwdata->yuvshm; | |
162 memset(yuvshm, 0, sizeof(*yuvshm)); | |
163 hwdata->port = xv_port; | |
164 hwdata->image = XvShmCreateImage(GFX_Display, xv_port, format, | |
165 0, width, height, yuvshm); | |
166 | |
167 #ifdef PITCH_WORKAROUND | |
168 if ( hwdata->image != NULL && hwdata->image->pitches[0] != width ) | |
169 { | |
170 /* Ajust overlay width according to pitch */ | |
171 switch (format) { | |
172 case SDL_YV12_OVERLAY: | |
173 case SDL_IYUV_OVERLAY: | |
174 width = hwdata->image->pitches[0]; | |
175 break; | |
176 case SDL_YUY2_OVERLAY: | |
177 case SDL_UYVY_OVERLAY: | |
178 case SDL_YVYU_OVERLAY: | |
179 width = hwdata->image->pitches[0] / 2; | |
180 break; | |
181 default: | |
182 /* We should never get here (caught above) */ | |
183 return(NULL); | |
184 } | |
185 | |
186 XFree(hwdata->image); | |
187 hwdata->image = XvShmCreateImage(GFX_Display, xv_port, format, | |
188 0, width, height, yuvshm); | |
189 } | |
190 #endif | |
191 | |
192 if ( hwdata->image == NULL ) { | |
193 SDL_OutOfMemory(); | |
194 SDL_FreeYUVOverlay(overlay); | |
195 return(NULL); | |
196 } | |
197 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size, | |
198 IPC_CREAT | 0777); | |
199 if ( yuvshm->shmid < 0 ) { | |
200 SDL_SetError("Unable to get %d bytes shared memory", | |
201 hwdata->image->data_size); | |
202 SDL_FreeYUVOverlay(overlay); | |
203 return(NULL); | |
204 } | |
205 yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0); | |
206 yuvshm->readOnly = False; | |
207 hwdata->image->data = yuvshm->shmaddr; | |
208 | |
209 XShmAttach(GFX_Display, yuvshm); | |
210 XSync(GFX_Display, False); | |
211 shmctl(yuvshm->shmid, IPC_RMID, 0); | |
212 | |
213 /* Find the pitch and offset values for the overlay */ | |
214 overlay->planes = hwdata->image->num_planes; | |
215 overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16)); | |
216 overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *)); | |
217 if ( !overlay->pitches || !overlay->pixels ) { | |
218 SDL_OutOfMemory(); | |
219 SDL_FreeYUVOverlay(overlay); | |
220 return(NULL); | |
221 } | |
222 for ( i=0; i<overlay->planes; ++i ) { | |
223 overlay->pitches[i] = hwdata->image->pitches[i]; | |
224 overlay->pixels[i] = (Uint8 *)hwdata->image->data + | |
225 hwdata->image->offsets[i]; | |
226 } | |
227 | |
228 #ifdef XFREE86_REFRESH_HACK | |
229 /* Work around an XFree86 X server bug (?) | |
230 We can't perform normal updates in windows that have video | |
231 being output to them. See SDL_x11image.c for more details. | |
232 */ | |
233 X11_DisableAutoRefresh(this); | |
234 #endif | |
235 | |
236 /* We're all done.. */ | |
237 return(overlay); | |
238 } | |
239 | |
240 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
241 { | |
242 return(0); | |
243 } | |
244 | |
245 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
246 { | |
247 return; | |
248 } | |
249 | |
250 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
251 { | |
252 struct private_yuvhwdata *hwdata; | |
253 | |
254 hwdata = overlay->hwdata; | |
255 XvShmPutImage(GFX_Display, hwdata->port, SDL_Window, SDL_GC, | |
256 hwdata->image, 0, 0, overlay->w, overlay->h, | |
257 dstrect->x, dstrect->y, dstrect->w, dstrect->h, False); | |
258 XSync(GFX_Display, False); | |
259 return(0); | |
260 } | |
261 | |
262 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
263 { | |
264 struct private_yuvhwdata *hwdata; | |
265 | |
266 hwdata = overlay->hwdata; | |
267 if ( hwdata ) { | |
268 XvUngrabPort(GFX_Display, hwdata->port, CurrentTime); | |
269 if ( hwdata->yuvshm.shmaddr ) { | |
270 XShmDetach(GFX_Display, &hwdata->yuvshm); | |
271 shmdt(hwdata->yuvshm.shmaddr); | |
272 } | |
273 if ( hwdata->image ) { | |
274 XFree(hwdata->image); | |
275 } | |
276 free(hwdata); | |
277 } | |
278 if ( overlay->pitches ) { | |
279 free(overlay->pitches); | |
280 overlay->pitches = NULL; | |
281 } | |
282 if ( overlay->pixels ) { | |
283 free(overlay->pixels); | |
284 overlay->pixels = NULL; | |
285 } | |
286 #ifdef XFREE86_REFRESH_HACK | |
287 X11_EnableAutoRefresh(this); | |
288 #endif | |
289 } | |
290 | |
291 #endif /* XFREE86_XV */ |