Mercurial > sdl-ios-xcode
annotate src/cdrom/macosx/SDL_syscdrom.c @ 4347:38f22ed3a433 SDL-1.2
Option to fix bug #851
For some people setting the period size works better (and is what SDL 1.2.13 did), but for most people it's the same or worse. You can use an environment variable to pick which one you want.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 17 Oct 2009 06:55:17 +0000 |
| parents | 386181851388 |
| children |
| rev | line source |
|---|---|
| 616 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
| 4159 | 3 Copyright (C) 1997-2009 Sam Lantinga |
| 616 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
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6 modify it under the terms of the GNU Lesser General Public |
| 616 | 7 License as published by the Free Software Foundation; either |
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8 version 2.1 of the License, or (at your option) any later version. |
| 616 | 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 | |
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13 Lesser General Public License for more details. |
| 616 | 14 |
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15 You should have received a copy of the GNU Lesser General Public |
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16 License along with this library; if not, write to the Free Software |
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 616 | 18 |
| 19 Sam Lantinga | |
| 20 slouken@libsdl.org | |
| 21 */ | |
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22 #include "SDL_config.h" |
| 616 | 23 |
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24 #ifdef SDL_CDROM_MACOSX |
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25 |
| 616 | 26 #include "SDL_syscdrom_c.h" |
| 27 | |
| 28 #pragma mark -- Globals -- | |
| 29 | |
| 30 static FSRef** tracks; | |
| 31 static FSVolumeRefNum* volumes; | |
| 32 static CDstatus status; | |
| 33 static int nextTrackFrame; | |
| 34 static int nextTrackFramesRemaining; | |
| 35 static int fakeCD; | |
| 36 static int currentTrack; | |
| 37 static int didReadTOC; | |
| 38 static int cacheTOCNumTracks; | |
| 39 static int currentDrive; /* Only allow 1 drive in use at a time */ | |
| 40 | |
| 41 #pragma mark -- Prototypes -- | |
| 42 | |
| 43 static const char *SDL_SYS_CDName (int drive); | |
| 44 static int SDL_SYS_CDOpen (int drive); | |
| 45 static int SDL_SYS_CDGetTOC (SDL_CD *cdrom); | |
| 46 static CDstatus SDL_SYS_CDStatus (SDL_CD *cdrom, int *position); | |
| 47 static int SDL_SYS_CDPlay (SDL_CD *cdrom, int start, int length); | |
| 48 static int SDL_SYS_CDPause (SDL_CD *cdrom); | |
| 49 static int SDL_SYS_CDResume (SDL_CD *cdrom); | |
| 50 static int SDL_SYS_CDStop (SDL_CD *cdrom); | |
| 51 static int SDL_SYS_CDEject (SDL_CD *cdrom); | |
| 52 static void SDL_SYS_CDClose (SDL_CD *cdrom); | |
| 53 | |
| 54 #pragma mark -- Helper Functions -- | |
| 55 | |
| 56 /* Read a list of tracks from the volume */ | |
| 57 static int LoadTracks (SDL_CD *cdrom) | |
| 58 { | |
| 59 /* Check if tracks are already loaded */ | |
| 60 if ( tracks[cdrom->id] != NULL ) | |
| 61 return 0; | |
| 62 | |
| 63 /* Allocate memory for tracks */ | |
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64 tracks[cdrom->id] = (FSRef*) SDL_calloc (1, sizeof(**tracks) * cdrom->numtracks); |
| 616 | 65 if (tracks[cdrom->id] == NULL) { |
| 66 SDL_OutOfMemory (); | |
| 67 return -1; | |
| 68 } | |
| 69 | |
| 70 /* Load tracks */ | |
| 71 if (ListTrackFiles (volumes[cdrom->id], tracks[cdrom->id], cdrom->numtracks) < 0) | |
| 72 return -1; | |
| 73 | |
| 74 return 0; | |
| 75 } | |
| 76 | |
| 77 /* Find a file for a given start frame and length */ | |
| 78 static FSRef* GetFileForOffset (SDL_CD *cdrom, int start, int length, int *outStartFrame, int *outStopFrame) | |
| 79 { | |
| 80 int i; | |
| 81 | |
| 82 for (i = 0; i < cdrom->numtracks; i++) { | |
| 83 | |
| 84 if (cdrom->track[i].offset <= start && | |
| 85 start < (cdrom->track[i].offset + cdrom->track[i].length)) | |
| 86 break; | |
| 87 } | |
| 88 | |
| 89 if (i == cdrom->numtracks) | |
| 90 return NULL; | |
| 91 | |
| 92 currentTrack = i; | |
| 93 | |
| 94 *outStartFrame = start - cdrom->track[i].offset; | |
| 95 | |
| 96 if ((*outStartFrame + length) < cdrom->track[i].length) { | |
| 97 *outStopFrame = *outStartFrame + length; | |
| 98 length = 0; | |
| 99 nextTrackFrame = -1; | |
| 100 nextTrackFramesRemaining = -1; | |
| 101 } | |
| 102 else { | |
| 103 *outStopFrame = -1; | |
| 104 length -= cdrom->track[i].length - *outStartFrame; | |
| 105 nextTrackFrame = cdrom->track[i+1].offset; | |
| 106 nextTrackFramesRemaining = length; | |
| 107 } | |
| 108 | |
| 109 return &tracks[cdrom->id][i]; | |
| 110 } | |
| 111 | |
| 112 /* Setup another file for playback, or stop playback (called from another thread) */ | |
| 113 static void CompletionProc (SDL_CD *cdrom) | |
| 114 { | |
| 115 | |
| 116 Lock (); | |
| 117 | |
| 118 if (nextTrackFrame > 0 && nextTrackFramesRemaining > 0) { | |
| 119 | |
| 120 /* Load the next file to play */ | |
| 121 int startFrame, stopFrame; | |
| 122 FSRef *file; | |
| 123 | |
| 124 PauseFile (); | |
| 125 ReleaseFile (); | |
| 126 | |
| 127 file = GetFileForOffset (cdrom, nextTrackFrame, | |
| 128 nextTrackFramesRemaining, &startFrame, &stopFrame); | |
| 129 | |
| 130 if (file == NULL) { | |
| 131 status = CD_STOPPED; | |
| 132 Unlock (); | |
| 133 return; | |
| 134 } | |
| 135 | |
| 136 LoadFile (file, startFrame, stopFrame); | |
| 137 | |
| 138 SetCompletionProc (CompletionProc, cdrom); | |
| 139 | |
| 140 PlayFile (); | |
| 141 } | |
| 142 else { | |
| 143 | |
| 144 /* Release the current file */ | |
| 145 PauseFile (); | |
| 146 ReleaseFile (); | |
| 147 status = CD_STOPPED; | |
| 148 } | |
| 149 | |
| 150 Unlock (); | |
| 151 } | |
| 152 | |
| 153 | |
| 154 #pragma mark -- Driver Functions -- | |
| 155 | |
| 156 /* Initialize */ | |
| 157 int SDL_SYS_CDInit (void) | |
| 158 { | |
| 159 /* Initialize globals */ | |
| 160 volumes = NULL; | |
| 161 tracks = NULL; | |
| 162 status = CD_STOPPED; | |
| 163 nextTrackFrame = -1; | |
| 164 nextTrackFramesRemaining = -1; | |
| 165 fakeCD = SDL_FALSE; | |
| 166 currentTrack = -1; | |
| 167 didReadTOC = SDL_FALSE; | |
| 168 cacheTOCNumTracks = -1; | |
| 169 currentDrive = -1; | |
| 170 | |
| 171 /* Fill in function pointers */ | |
| 172 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 173 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 174 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 175 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 176 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 177 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 178 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 179 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 180 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 181 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 182 | |
| 183 /* | |
| 184 Read the list of "drives" | |
| 185 | |
| 186 This is currently a hack that infers drives from | |
| 187 mounted audio CD volumes, rather than | |
| 188 actual CD-ROM devices - which means it may not | |
| 189 act as expected sometimes. | |
| 190 */ | |
| 191 | |
| 192 /* Find out how many cd volumes are mounted */ | |
| 193 SDL_numcds = DetectAudioCDVolumes (NULL, 0); | |
| 194 | |
| 195 /* | |
| 196 If there are no volumes, fake a cd device | |
| 197 so tray empty can be reported. | |
| 198 */ | |
| 199 if (SDL_numcds == 0) { | |
| 200 | |
| 201 fakeCD = SDL_TRUE; | |
| 202 SDL_numcds = 1; | |
| 203 status = CD_TRAYEMPTY; | |
| 204 | |
| 205 return 0; | |
| 206 } | |
| 207 | |
| 208 /* Allocate space for volumes */ | |
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209 volumes = (FSVolumeRefNum*) SDL_calloc (1, sizeof(*volumes) * SDL_numcds); |
| 616 | 210 if (volumes == NULL) { |
| 211 SDL_OutOfMemory (); | |
| 212 return -1; | |
| 213 } | |
| 214 | |
| 215 /* Allocate space for tracks */ | |
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216 tracks = (FSRef**) SDL_calloc (1, sizeof(*tracks) * (SDL_numcds + 1)); |
| 616 | 217 if (tracks == NULL) { |
| 218 SDL_OutOfMemory (); | |
| 219 return -1; | |
| 220 } | |
| 221 | |
| 222 /* Mark the end of the tracks array */ | |
| 223 tracks[ SDL_numcds ] = (FSRef*)-1; | |
| 224 | |
| 225 /* | |
| 226 Redetect, now save all volumes for later | |
| 227 Update SDL_numcds just in case it changed | |
| 228 */ | |
| 229 { | |
| 230 int numVolumes = SDL_numcds; | |
| 231 | |
| 232 SDL_numcds = DetectAudioCDVolumes (volumes, numVolumes); | |
| 233 | |
| 234 /* If more cds suddenly show up, ignore them */ | |
| 235 if (SDL_numcds > numVolumes) { | |
| 236 SDL_SetError ("Some CD's were added but they will be ignored"); | |
| 237 SDL_numcds = numVolumes; | |
| 238 } | |
| 239 } | |
| 240 | |
| 241 return 0; | |
| 242 } | |
| 243 | |
| 244 /* Shutdown and cleanup */ | |
| 245 void SDL_SYS_CDQuit(void) | |
| 246 { | |
| 247 ReleaseFile(); | |
| 248 | |
| 249 if (volumes != NULL) | |
| 250 free (volumes); | |
| 251 | |
| 252 if (tracks != NULL) { | |
| 253 | |
| 254 FSRef **ptr; | |
| 255 for (ptr = tracks; *ptr != (FSRef*)-1; ptr++) | |
| 256 if (*ptr != NULL) | |
| 257 free (*ptr); | |
| 258 | |
| 259 free (tracks); | |
| 260 } | |
| 261 } | |
| 262 | |
| 263 /* Get the Unix disk name of the volume */ | |
| 264 static const char *SDL_SYS_CDName (int drive) | |
| 265 { | |
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266 /* |
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267 * !!! FIXME: PBHGetVolParmsSync() is gone in 10.6, |
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268 * !!! FIXME: replaced with FSGetVolumeParms(), which |
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269 * !!! FIXME: isn't available before 10.5. :/ |
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270 */ |
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271 return "Mac OS X CD-ROM Device"; |
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272 |
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273 #if 0 |
| 616 | 274 OSStatus err = noErr; |
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275 HParamBlockRec pb; |
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276 GetVolParmsInfoBuffer volParmsInfo; |
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277 |
| 616 | 278 if (fakeCD) |
| 279 return "Fake CD-ROM Device"; | |
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280 |
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281 pb.ioParam.ioNamePtr = NULL; |
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282 pb.ioParam.ioVRefNum = volumes[drive]; |
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283 pb.ioParam.ioBuffer = (Ptr)&volParmsInfo; |
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284 pb.ioParam.ioReqCount = (SInt32)sizeof(volParmsInfo); |
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285 err = PBHGetVolParmsSync(&pb); |
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286 |
| 616 | 287 if (err != noErr) { |
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288 SDL_SetError ("PBHGetVolParmsSync returned %d", err); |
| 616 | 289 return NULL; |
| 290 } | |
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291 |
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292 return volParmsInfo.vMDeviceID; |
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293 #endif |
| 616 | 294 } |
| 295 | |
| 296 /* Open the "device" */ | |
| 297 static int SDL_SYS_CDOpen (int drive) | |
| 298 { | |
| 299 /* Only allow 1 device to be open */ | |
| 300 if (currentDrive >= 0) { | |
| 301 SDL_SetError ("Only one cdrom is supported"); | |
| 302 return -1; | |
| 303 } | |
| 304 else | |
| 305 currentDrive = drive; | |
| 306 | |
| 307 return drive; | |
| 308 } | |
| 309 | |
| 310 /* Get the table of contents */ | |
| 311 static int SDL_SYS_CDGetTOC (SDL_CD *cdrom) | |
| 312 { | |
| 313 if (fakeCD) { | |
| 314 SDL_SetError (kErrorFakeDevice); | |
| 315 return -1; | |
| 316 } | |
| 317 | |
| 318 if (didReadTOC) { | |
| 319 cdrom->numtracks = cacheTOCNumTracks; | |
| 320 return 0; | |
| 321 } | |
| 322 | |
| 323 | |
| 324 ReadTOCData (volumes[cdrom->id], cdrom); | |
| 325 didReadTOC = SDL_TRUE; | |
| 326 cacheTOCNumTracks = cdrom->numtracks; | |
| 327 | |
| 328 return 0; | |
| 329 } | |
| 330 | |
| 331 /* Get CD-ROM status */ | |
| 332 static CDstatus SDL_SYS_CDStatus (SDL_CD *cdrom, int *position) | |
| 333 { | |
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334 if (position) { |
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335 int trackFrame; |
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336 |
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337 Lock (); |
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338 trackFrame = GetCurrentFrame (); |
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339 Unlock (); |
| 616 | 340 |
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341 *position = cdrom->track[currentTrack].offset + trackFrame; |
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342 } |
| 616 | 343 |
| 344 return status; | |
| 345 } | |
| 346 | |
| 347 /* Start playback */ | |
| 348 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 349 { | |
| 350 int startFrame, stopFrame; | |
| 351 FSRef *ref; | |
| 352 | |
| 353 if (fakeCD) { | |
| 354 SDL_SetError (kErrorFakeDevice); | |
| 355 return -1; | |
| 356 } | |
| 357 | |
| 358 Lock(); | |
| 359 | |
| 360 if (LoadTracks (cdrom) < 0) | |
| 361 return -2; | |
| 362 | |
| 363 if (PauseFile () < 0) | |
| 364 return -3; | |
| 365 | |
| 366 if (ReleaseFile () < 0) | |
| 367 return -4; | |
| 368 | |
| 369 ref = GetFileForOffset (cdrom, start, length, &startFrame, &stopFrame); | |
| 370 if (ref == NULL) { | |
| 371 SDL_SetError ("SDL_SYS_CDPlay: No file for start=%d, length=%d", start, length); | |
| 372 return -5; | |
| 373 } | |
| 374 | |
| 375 if (LoadFile (ref, startFrame, stopFrame) < 0) | |
| 376 return -6; | |
| 377 | |
| 378 SetCompletionProc (CompletionProc, cdrom); | |
| 379 | |
| 380 if (PlayFile () < 0) | |
| 381 return -7; | |
| 382 | |
| 383 status = CD_PLAYING; | |
| 384 | |
| 385 Unlock(); | |
| 386 | |
| 387 return 0; | |
| 388 } | |
| 389 | |
| 390 /* Pause playback */ | |
| 391 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 392 { | |
| 393 if (fakeCD) { | |
| 394 SDL_SetError (kErrorFakeDevice); | |
| 395 return -1; | |
| 396 } | |
| 397 | |
| 398 Lock (); | |
| 399 | |
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400 if (PauseFile () < 0) { |
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401 Unlock (); |
| 616 | 402 return -2; |
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403 } |
| 616 | 404 |
| 405 status = CD_PAUSED; | |
| 406 | |
| 407 Unlock (); | |
| 408 | |
| 409 return 0; | |
| 410 } | |
| 411 | |
| 412 /* Resume playback */ | |
| 413 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 414 { | |
| 415 if (fakeCD) { | |
| 416 SDL_SetError (kErrorFakeDevice); | |
| 417 return -1; | |
| 418 } | |
| 419 | |
| 420 Lock (); | |
| 421 | |
|
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Fix for bug reported by Michael Benfield on the SDL mailing list:
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parents:
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422 if (PlayFile () < 0) { |
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423 Unlock (); |
| 616 | 424 return -2; |
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425 } |
| 616 | 426 |
| 427 status = CD_PLAYING; | |
| 428 | |
| 429 Unlock (); | |
| 430 | |
| 431 return 0; | |
| 432 } | |
| 433 | |
| 434 /* Stop playback */ | |
| 435 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 436 { | |
| 437 if (fakeCD) { | |
| 438 SDL_SetError (kErrorFakeDevice); | |
| 439 return -1; | |
| 440 } | |
| 441 | |
| 442 Lock (); | |
| 443 | |
|
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Max has been reworking this code so it works on MacOS X 10.1
Sam Lantinga <slouken@libsdl.org>
parents:
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444 if (PauseFile () < 0) { |
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parents:
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445 Unlock (); |
| 616 | 446 return -2; |
|
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Max has been reworking this code so it works on MacOS X 10.1
Sam Lantinga <slouken@libsdl.org>
parents:
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447 } |
| 616 | 448 |
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Max has been reworking this code so it works on MacOS X 10.1
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449 if (ReleaseFile () < 0) { |
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parents:
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450 Unlock (); |
| 616 | 451 return -3; |
|
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Max has been reworking this code so it works on MacOS X 10.1
Sam Lantinga <slouken@libsdl.org>
parents:
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452 } |
| 616 | 453 |
| 454 status = CD_STOPPED; | |
| 455 | |
| 456 Unlock (); | |
| 457 | |
| 458 return 0; | |
| 459 } | |
| 460 | |
| 461 /* Eject the CD-ROM (Unmount the volume) */ | |
| 462 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 463 { | |
| 464 OSStatus err; | |
|
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Date: Mon, 8 May 2006 14:19:30 -0700
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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465 pid_t dissenter; |
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4d66375c2012
Date: Mon, 8 May 2006 14:19:30 -0700
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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466 |
| 616 | 467 if (fakeCD) { |
| 468 SDL_SetError (kErrorFakeDevice); | |
| 469 return -1; | |
| 470 } | |
| 471 | |
| 472 Lock (); | |
| 473 | |
|
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Max has been reworking this code so it works on MacOS X 10.1
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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474 if (PauseFile () < 0) { |
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de1b2c3063b9
Max has been reworking this code so it works on MacOS X 10.1
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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475 Unlock (); |
| 616 | 476 return -2; |
|
768
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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477 } |
| 616 | 478 |
|
768
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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479 if (ReleaseFile () < 0) { |
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Sam Lantinga <slouken@libsdl.org>
parents:
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480 Unlock (); |
| 616 | 481 return -3; |
|
768
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Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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482 } |
| 616 | 483 |
| 484 status = CD_STOPPED; | |
| 485 | |
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1487
dc6b59e925a2
Cleaning up warnings on MacOS X
Sam Lantinga <slouken@libsdl.org>
parents:
1402
diff
changeset
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486 /* Eject the volume */ |
|
1793
4d66375c2012
Date: Mon, 8 May 2006 14:19:30 -0700
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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487 err = FSEjectVolumeSync(volumes[cdrom->id], kNilOptions, &dissenter); |
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parents:
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diff
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488 |
|
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Max has been reworking this code so it works on MacOS X 10.1
Sam Lantinga <slouken@libsdl.org>
parents:
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489 if (err != noErr) { |
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parents:
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490 Unlock (); |
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491 SDL_SetError ("PBUnmountVol returned %d", err); |
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492 return -4; |
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493 } |
| 616 | 494 |
| 495 status = CD_TRAYEMPTY; | |
| 496 | |
| 497 /* Invalidate volume and track info */ | |
| 498 volumes[cdrom->id] = 0; | |
| 499 free (tracks[cdrom->id]); | |
| 500 tracks[cdrom->id] = NULL; | |
| 501 | |
| 502 Unlock (); | |
| 503 | |
| 504 return 0; | |
| 505 } | |
| 506 | |
| 507 /* Close the CD-ROM */ | |
| 508 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 509 { | |
| 510 currentDrive = -1; | |
| 511 return; | |
| 512 } | |
| 513 | |
|
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Make sure code is only compiled if the appropriate subsystem is enabled
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
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514 #endif /* SDL_CDROM_MACOSX */ |