Mercurial > sdl-ios-xcode
annotate src/video/x11/SDL_x11yuv.c @ 553:417f8709e648
There's a bug in the VC7 optimizer relating to the duff loop optimization
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 02 Dec 2002 02:40:58 +0000 |
| parents | 95aa4041e7f9 |
| children | e3d0517bf67e |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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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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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 |
| 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; | |
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109 SDL_NAME(XvImageFormatValues) *formats; |
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110 formats = SDL_NAME(XvListImageFormats)(GFX_Display, |
| 0 | 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 ) { | |
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119 if ( Success == SDL_NAME(XvGrabPort)(GFX_Display, ainfo[i].base_id+k, CurrentTime) ) { |
| 0 | 120 xv_port = ainfo[i].base_id+k; |
| 121 break; | |
| 122 } | |
| 123 } | |
| 124 } | |
| 125 } | |
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126 if ( formats ) { |
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127 XFree(formats); |
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128 } |
| 0 | 129 } |
| 130 } | |
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131 SDL_NAME(XvFreeAdaptorInfo)(ainfo); |
| 0 | 132 } |
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133 |
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134 #if 0 |
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135 /* |
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136 * !!! FIXME: |
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137 * "Here are some diffs for X11 and yuv. Note that the last part 2nd |
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138 * diff should probably be a new call to XvQueryAdaptorFree with ainfo |
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139 * and the number of adaptors, instead of the loop through like I did." |
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140 * |
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141 * ACHTUNG: This is broken! It looks like XvFreeAdaptorInfo does this |
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142 * for you, so we end up with a double-free. I need to look at this |
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143 * more closely... --ryan. |
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144 */ |
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145 for ( i=0; i < adaptors; ++i ) { |
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146 if (ainfo[i].name != NULL) Xfree(ainfo[i].name); |
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147 if (ainfo[i].formats != NULL) Xfree(ainfo[i].formats); |
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148 } |
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149 Xfree(ainfo); |
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150 #endif |
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151 |
| 0 | 152 if ( xv_port == -1 ) { |
| 153 SDL_SetError("No available video ports for requested format"); | |
| 154 return(NULL); | |
| 155 } | |
| 156 | |
| 157 /* Create the overlay structure */ | |
| 158 overlay = (SDL_Overlay *)malloc(sizeof *overlay); | |
| 159 if ( overlay == NULL ) { | |
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160 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime); |
| 0 | 161 SDL_OutOfMemory(); |
| 162 return(NULL); | |
| 163 } | |
| 164 memset(overlay, 0, (sizeof *overlay)); | |
| 165 | |
| 166 /* Fill in the basic members */ | |
| 167 overlay->format = format; | |
| 168 overlay->w = width; | |
| 169 overlay->h = height; | |
| 170 | |
| 171 /* Set up the YUV surface function structure */ | |
| 172 overlay->hwfuncs = &x11_yuvfuncs; | |
| 173 overlay->hw_overlay = 1; | |
| 174 | |
| 175 /* Create the pixel data and lookup tables */ | |
| 176 hwdata = (struct private_yuvhwdata *)malloc(sizeof *hwdata); | |
| 177 overlay->hwdata = hwdata; | |
| 178 if ( hwdata == NULL ) { | |
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179 SDL_NAME(XvUngrabPort)(GFX_Display, xv_port, CurrentTime); |
| 0 | 180 SDL_OutOfMemory(); |
| 181 SDL_FreeYUVOverlay(overlay); | |
| 182 return(NULL); | |
| 183 } | |
| 184 yuvshm = &hwdata->yuvshm; | |
| 185 memset(yuvshm, 0, sizeof(*yuvshm)); | |
| 186 hwdata->port = xv_port; | |
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187 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format, |
| 0 | 188 0, width, height, yuvshm); |
| 189 | |
| 190 #ifdef PITCH_WORKAROUND | |
| 191 if ( hwdata->image != NULL && hwdata->image->pitches[0] != width ) | |
| 192 { | |
| 193 /* Ajust overlay width according to pitch */ | |
| 194 switch (format) { | |
| 195 case SDL_YV12_OVERLAY: | |
| 196 case SDL_IYUV_OVERLAY: | |
| 197 width = hwdata->image->pitches[0]; | |
| 198 break; | |
| 199 case SDL_YUY2_OVERLAY: | |
| 200 case SDL_UYVY_OVERLAY: | |
| 201 case SDL_YVYU_OVERLAY: | |
| 202 width = hwdata->image->pitches[0] / 2; | |
| 203 break; | |
| 204 default: | |
| 205 /* We should never get here (caught above) */ | |
| 206 return(NULL); | |
| 207 } | |
| 208 | |
| 209 XFree(hwdata->image); | |
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210 hwdata->image = SDL_NAME(XvShmCreateImage)(GFX_Display, xv_port, format, |
| 0 | 211 0, width, height, yuvshm); |
| 212 } | |
| 213 #endif | |
| 214 | |
| 215 if ( hwdata->image == NULL ) { | |
| 216 SDL_OutOfMemory(); | |
| 217 SDL_FreeYUVOverlay(overlay); | |
| 218 return(NULL); | |
| 219 } | |
| 220 yuvshm->shmid = shmget(IPC_PRIVATE, hwdata->image->data_size, | |
| 221 IPC_CREAT | 0777); | |
| 222 if ( yuvshm->shmid < 0 ) { | |
| 223 SDL_SetError("Unable to get %d bytes shared memory", | |
| 224 hwdata->image->data_size); | |
| 225 SDL_FreeYUVOverlay(overlay); | |
| 226 return(NULL); | |
| 227 } | |
| 228 yuvshm->shmaddr = (char *) shmat(yuvshm->shmid, 0, 0); | |
| 229 yuvshm->readOnly = False; | |
| 230 hwdata->image->data = yuvshm->shmaddr; | |
| 231 | |
| 232 XShmAttach(GFX_Display, yuvshm); | |
| 233 XSync(GFX_Display, False); | |
| 234 shmctl(yuvshm->shmid, IPC_RMID, 0); | |
| 235 | |
| 236 /* Find the pitch and offset values for the overlay */ | |
| 237 overlay->planes = hwdata->image->num_planes; | |
| 238 overlay->pitches = (Uint16 *)malloc(overlay->planes * sizeof(Uint16)); | |
| 239 overlay->pixels = (Uint8 **)malloc(overlay->planes * sizeof(Uint8 *)); | |
| 240 if ( !overlay->pitches || !overlay->pixels ) { | |
| 241 SDL_OutOfMemory(); | |
| 242 SDL_FreeYUVOverlay(overlay); | |
| 243 return(NULL); | |
| 244 } | |
| 245 for ( i=0; i<overlay->planes; ++i ) { | |
| 246 overlay->pitches[i] = hwdata->image->pitches[i]; | |
| 247 overlay->pixels[i] = (Uint8 *)hwdata->image->data + | |
| 248 hwdata->image->offsets[i]; | |
| 249 } | |
| 250 | |
| 251 #ifdef XFREE86_REFRESH_HACK | |
| 252 /* Work around an XFree86 X server bug (?) | |
| 253 We can't perform normal updates in windows that have video | |
| 254 being output to them. See SDL_x11image.c for more details. | |
| 255 */ | |
| 256 X11_DisableAutoRefresh(this); | |
| 257 #endif | |
| 258 | |
| 259 /* We're all done.. */ | |
| 260 return(overlay); | |
| 261 } | |
| 262 | |
| 263 int X11_LockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 264 { | |
| 265 return(0); | |
| 266 } | |
| 267 | |
| 268 void X11_UnlockYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 269 { | |
| 270 return; | |
| 271 } | |
| 272 | |
| 273 int X11_DisplayYUVOverlay(_THIS, SDL_Overlay *overlay, SDL_Rect *dstrect) | |
| 274 { | |
| 275 struct private_yuvhwdata *hwdata; | |
| 276 | |
| 277 hwdata = overlay->hwdata; | |
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278 SDL_NAME(XvShmPutImage)(GFX_Display, hwdata->port, SDL_Window, SDL_GC, |
| 0 | 279 hwdata->image, 0, 0, overlay->w, overlay->h, |
| 280 dstrect->x, dstrect->y, dstrect->w, dstrect->h, False); | |
| 281 XSync(GFX_Display, False); | |
| 282 return(0); | |
| 283 } | |
| 284 | |
| 285 void X11_FreeYUVOverlay(_THIS, SDL_Overlay *overlay) | |
| 286 { | |
| 287 struct private_yuvhwdata *hwdata; | |
| 288 | |
| 289 hwdata = overlay->hwdata; | |
| 290 if ( hwdata ) { | |
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291 SDL_NAME(XvUngrabPort)(GFX_Display, hwdata->port, CurrentTime); |
| 0 | 292 if ( hwdata->yuvshm.shmaddr ) { |
| 293 XShmDetach(GFX_Display, &hwdata->yuvshm); | |
| 294 shmdt(hwdata->yuvshm.shmaddr); | |
| 295 } | |
| 296 if ( hwdata->image ) { | |
| 297 XFree(hwdata->image); | |
| 298 } | |
| 299 free(hwdata); | |
| 300 } | |
| 301 if ( overlay->pitches ) { | |
| 302 free(overlay->pitches); | |
| 303 overlay->pitches = NULL; | |
| 304 } | |
| 305 if ( overlay->pixels ) { | |
| 306 free(overlay->pixels); | |
| 307 overlay->pixels = NULL; | |
| 308 } | |
| 309 #ifdef XFREE86_REFRESH_HACK | |
| 310 X11_EnableAutoRefresh(this); | |
| 311 #endif | |
| 312 } | |
| 313 | |
| 314 #endif /* XFREE86_XV */ |