Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11yuv.c @ 665:d27aab66c5d6
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| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 06 Aug 2003 20:12:00 +0000 |
| parents | e3d0517bf67e |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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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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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> | |
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38 #include <XFree86/extensions/Xvlib.h> |
| 0 | 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*/ /* Apparently the NVidia drivers are fixed */ |
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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; | |
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67 SDL_NAME(XvImage) *image; |
| 0 | 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; | |
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78 SDL_NAME(XvAdaptorInfo) *ainfo; |
| 0 | 79 XShmSegmentInfo *yuvshm; |
| 80 | |
| 81 /* Look for the XVideo extension with a valid port for this format */ | |
| 82 xv_port = -1; | |
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83 if ( (Success == SDL_NAME(XvQueryExtension)(GFX_Display, &j, &j, &j, &j, &j)) && |
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84 (Success == SDL_NAME(XvQueryAdaptors)(GFX_Display, |
| 0 | 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 |
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90 for ( i=0; (i < adaptors) && (xv_port == -1); ++i ) |
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91 #endif /* USE_LAST_ADAPTOR */ |
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92 { |
| 0 | 93 /* Check to see if the visual can be used */ |
| 94 if ( BUGGY_XFREE86(<=, 4001) ) { | |
| 95 int visual_ok = 0; | |
| 96 for ( j=0; j<ainfo[i].num_formats; ++j ) { | |
| 97 if ( ainfo[i].formats[j].visual_id == | |
| 98 SDL_Visual->visualid ) { | |
| 99 visual_ok = 1; | |
| 100 break; | |
| 101 } | |
| 102 } | |
| 103 if ( ! visual_ok ) { | |
| 104 continue; | |
| 105 } | |
| 106 } | |
| 107 if ( (ainfo[i].type & XvInputMask) && | |
| 108 (ainfo[i].type & XvImageMask) ) { | |
| 109 int num_formats; | |
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110 SDL_NAME(XvImageFormatValues) *formats; |
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111 formats = SDL_NAME(XvListImageFormats)(GFX_Display, |
| 0 | 112 ainfo[i].base_id, &num_formats); |
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113 #ifdef USE_LAST_ADAPTOR |
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114 for ( j=0; j < num_formats; ++j ) |
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115 #else |
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116 for ( j=0; (j < num_formats) && (xv_port == -1); ++j ) |
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117 #endif /* USE_LAST_ADAPTOR */ |
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118 { |
| 0 | 119 if ( (Uint32)formats[j].id == format ) { |
| 120 for ( k=0; k < ainfo[i].num_ports; ++k ) { | |
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121 if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) { |
| 0 | 122 xv_port = ainfo[i].base_id+k; |
| 123 break; | |
| 124 } | |
| 125 } | |
| 126 } | |
| 127 } | |
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128 if ( formats ) { |
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129 XFree(formats); |
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130 } |
| 0 | 131 } |
| 132 } | |
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133 SDL_NAME(XvFreeAdaptorInfo)(ainfo); |
| 0 | 134 } |
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135 |
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136 #if 0 |
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137 /* |
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138 * !!! FIXME: |
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139 * "Here are some diffs for X11 and yuv. Note that the last part 2nd |
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140 * diff should probably be a new call to XvQueryAdaptorFree with ainfo |
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141 * and the number of adaptors, instead of the loop through like I did." |
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142 * |
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143 * ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this |
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144 * for you, so we end up with a double-free. I need to look at this |
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145 * more closely... --ryan. |
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146 */ |
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147 for ( i=0; i < adaptors; ++i ) { |
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148 if (ainfo[i].name != NULL) Xfree(ainfo[i].name); |
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149 if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats); |
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150 } |
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151 Xfree(ainfo); |
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152 #endif |
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153 |
| 0 | 154 if ( xv_port == -1 ) { |
| 155 SDL_SetError("No available video ports for requested format"); | |
| 156 return(NULL); | |
| 157 } | |
| 158 | |
| 159 /* Create the overlay structure */ | |
| 160 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 161 if ( overlay == NULL ) { | |
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162 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime); |
| 0 | 163 SDL_OutOfMemory(); |
| 164 return(NULL); | |
| 165 } | |
| 166 memset(overlay, 0, (sizeof *overlay)); | |
| 167 | |
| 168 /* Fill in the basic members */ | |
| 169 overlay->format = format; | |
| 170 overlay->w = width; | |
| 171 overlay->h = height; | |
| 172 | |
| 173 /* Set up the YUV surface function structure */ | |
| 174 overlay->hwfuncs = &x11_yuvfuncs; | |
| 175 overlay->hw_overlay = 1; | |
| 176 | |
| 177 /* Create the pixel data and lookup tables */ | |
| 178 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata); | |
| 179 overlay->hwdata = hwdata; | |
| 180 if ( hwdata == NULL ) { | |
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181 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime); |
| 0 | 182 SDL_OutOfMemory(); |
| 183 SDL_FreeYUVOverlay(overlay); | |
| 184 return(NULL); | |
| 185 } | |
| 186 yuvshm = &hwdata->yuvshm; | |
| 187 memset(yuvshm, 0, sizeof(*yuvshm)); | |
| 188 hwdata->port = xv_port; | |
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189 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format, |
| 0 | 190 0, width, height, yuvshm); |
| 191 | |
| 192 #ifdef PITCH_WORKAROUND | |
| 193 if ( hwdata->image != NULL && hwdata->image->pitches[0] != width ) | |
| 194 { | |
| 195 /* Ajust overlay width according to pitch */ | |
| 196 switch (format) { | |
| 197 case SDL_YV12_OVERLAY: | |
| 198 case SDL_IYUV_OVERLAY: | |
| 199 width = hwdata->image->pitches[0]; | |
| 200 break; | |
| 201 case SDL_YUY2_OVERLAY: | |
| 202 case SDL_UYVY_OVERLAY: | |
| 203 case SDL_YVYU_OVERLAY: | |
| 204 width = hwdata->image->pitches[0] / 2; | |
| 205 break; | |
| 206 default: | |
| 207 /* We should never get here (caught above) */ | |
| 208 return(NULL); | |
| 209 } | |
| 210 | |
| 211 XFree(hwdata->image); | |
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212 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format, |
| 0 | 213 0, width, height, yuvshm); |
| 214 } | |
| 215 #endif | |
| 216 | |
| 217 if ( hwdata->image == NULL ) { | |
| 218 SDL_OutOfMemory(); | |
| 219 SDL_FreeYUVOverlay(overlay); | |
| 220 return(NULL); | |
| 221 } | |
| 222 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size, | |
| 223 IPC_CREAT | 0777); | |
| 224 if ( yuvshm->shmid < 0 ) { | |
| 225 SDL_SetError("Unable to get %d bytes shared memory", | |
| 226 hwdata->image->data_size); | |
| 227 SDL_FreeYUVOverlay(overlay); | |
| 228 return(NULL); | |
| 229 } | |
| 230 yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0); | |
| 231 yuvshm->readOnly = False; | |
| 232 hwdata->image->data = yuvshm->shmaddr; | |
| 233 | |
| 234 XShmAttach(GFX_Display, yuvshm); | |
| 235 XSync(GFX_Display, False); | |
| 236 shmctl(yuvshm->shmid, IPC_RMID, 0); | |
| 237 | |
| 238 /* Find the pitch and offset values for the overlay */ | |
| 239 overlay->planes = hwdata->image->num_planes; | |
| 240 overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16)); | |
| 241 overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *)); | |
| 242 if ( !overlay->pitches || !overlay->pixels ) { | |
| 243 SDL_OutOfMemory(); | |
| 244 SDL_FreeYUVOverlay(overlay); | |
| 245 return(NULL); | |
| 246 } | |
| 247 for ( i=0; i<overlay->planes; ++i ) { | |
| 248 overlay->pitches[i] = hwdata->image->pitches[i]; | |
| 249 overlay->pixels[i] = (Uint8 *)hwdata->image->data + | |
| 250 hwdata->image->offsets[i]; | |
| 251 } | |
| 252 | |
| 253 #ifdef XFREE86_REFRESH_HACK | |
| 254 /* Work around an XFree86 X server bug (?) | |
| 255 We can't perform normal updates in windows that have video | |
| 256 being output to them. See SDL_x11image.c for more details. | |
| 257 */ | |
| 258 X11_DisableAutoRefresh(this); | |
| 259 #endif | |
| 260 | |
| 261 /* We're all done.. */ | |
| 262 return(overlay); | |
| 263 } | |
| 264 | |
| 265 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 266 { | |
| 267 return(0); | |
| 268 } | |
| 269 | |
| 270 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 271 { | |
| 272 return; | |
| 273 } | |
| 274 | |
| 275 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 276 { | |
| 277 struct private_yuvhwdata *hwdata; | |
| 278 | |
| 279 hwdata = overlay->hwdata; | |
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280 SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC, |
| 0 | 281 hwdata->image, 0, 0, overlay->w, overlay->h, |
| 282 dstrect->x, dstrect->y, dstrect->w, dstrect->h, False); | |
| 283 XSync(GFX_Display, False); | |
| 284 return(0); | |
| 285 } | |
| 286 | |
| 287 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 288 { | |
| 289 struct private_yuvhwdata *hwdata; | |
| 290 | |
| 291 hwdata = overlay->hwdata; | |
| 292 if ( hwdata ) { | |
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293 SDL_NAME(XvUngrabPort)(GFX_Display, hwdata->port, CurrentTime); |
| 0 | 294 if ( hwdata->yuvshm.shmaddr ) { |
| 295 XShmDetach(GFX_Display, &hwdata->yuvshm); | |
| 296 shmdt(hwdata->yuvshm.shmaddr); | |
| 297 } | |
| 298 if ( hwdata->image ) { | |
| 299 XFree(hwdata->image); | |
| 300 } | |
| 301 free(hwdata); | |
| 302 } | |
| 303 if ( overlay->pitches ) { | |
| 304 free(overlay->pitches); | |
| 305 overlay->pitches = NULL; | |
| 306 } | |
| 307 if ( overlay->pixels ) { | |
| 308 free(overlay->pixels); | |
| 309 overlay->pixels = NULL; | |
| 310 } | |
| 311 #ifdef XFREE86_REFRESH_HACK | |
| 312 X11_EnableAutoRefresh(this); | |
| 313 #endif | |
| 314 } | |
| 315 | |
| 316 #endif /* XFREE86_XV */ |