Mercurial > sdl-ios-xcode
annotate src/cdrom/macosx/SDL_syscdrom.c @ 874:9719e7f51a3a
Date: Thu, 11 Mar 2004 18:45:17 +0900
From: Hayashi Naoyuki
Subject: Re: Tru64 cdrom and pthread option fix
I wrote
/* Some CD-ROM drives cannot play the first 150 frames. */
in src/cdrom/osf/SDL_syscdrom.c
and
Some CD-ROM drives(ex. TEAC CD-532E) cannot play first 150 frames(aka gap).
but this is not right.
It is written in MMC that LBA = 4500*M + 75*S + F - 150.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Thu, 11 Mar 2004 12:59:41 +0000 |
| parents | b8d311d90021 |
| children | d581fe3f36db |
| rev | line source |
|---|---|
| 616 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information for 2004 (Happy New Year!)
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 616 | 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 | |
| 20 slouken@libsdl.org | |
| 21 */ | |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 #include "SDL_syscdrom_c.h" | |
| 29 | |
| 30 #pragma mark -- Globals -- | |
| 31 | |
| 32 static FSRef** tracks; | |
| 33 static FSVolumeRefNum* volumes; | |
| 34 static CDstatus status; | |
| 35 static int nextTrackFrame; | |
| 36 static int nextTrackFramesRemaining; | |
| 37 static int fakeCD; | |
| 38 static int currentTrack; | |
| 39 static int didReadTOC; | |
| 40 static int cacheTOCNumTracks; | |
| 41 static int currentDrive; /* Only allow 1 drive in use at a time */ | |
| 42 | |
| 43 #pragma mark -- Prototypes -- | |
| 44 | |
| 45 static const char *SDL_SYS_CDName (int drive); | |
| 46 static int SDL_SYS_CDOpen (int drive); | |
| 47 static int SDL_SYS_CDGetTOC (SDL_CD *cdrom); | |
| 48 static CDstatus SDL_SYS_CDStatus (SDL_CD *cdrom, int *position); | |
| 49 static int SDL_SYS_CDPlay (SDL_CD *cdrom, int start, int length); | |
| 50 static int SDL_SYS_CDPause (SDL_CD *cdrom); | |
| 51 static int SDL_SYS_CDResume (SDL_CD *cdrom); | |
| 52 static int SDL_SYS_CDStop (SDL_CD *cdrom); | |
| 53 static int SDL_SYS_CDEject (SDL_CD *cdrom); | |
| 54 static void SDL_SYS_CDClose (SDL_CD *cdrom); | |
| 55 | |
| 56 #pragma mark -- Helper Functions -- | |
| 57 | |
| 58 /* Read a list of tracks from the volume */ | |
| 59 static int LoadTracks (SDL_CD *cdrom) | |
| 60 { | |
| 61 /* Check if tracks are already loaded */ | |
| 62 if ( tracks[cdrom->id] != NULL ) | |
| 63 return 0; | |
| 64 | |
| 65 /* Allocate memory for tracks */ | |
| 66 tracks[cdrom->id] = (FSRef*) calloc (1, sizeof(**tracks) * cdrom->numtracks); | |
| 67 if (tracks[cdrom->id] == NULL) { | |
| 68 SDL_OutOfMemory (); | |
| 69 return -1; | |
| 70 } | |
| 71 | |
| 72 /* Load tracks */ | |
| 73 if (ListTrackFiles (volumes[cdrom->id], tracks[cdrom->id], cdrom->numtracks) < 0) | |
| 74 return -1; | |
| 75 | |
| 76 return 0; | |
| 77 } | |
| 78 | |
| 79 /* Find a file for a given start frame and length */ | |
| 80 static FSRef* GetFileForOffset (SDL_CD *cdrom, int start, int length, int *outStartFrame, int *outStopFrame) | |
| 81 { | |
| 82 int i; | |
| 83 | |
| 84 for (i = 0; i < cdrom->numtracks; i++) { | |
| 85 | |
| 86 if (cdrom->track[i].offset <= start && | |
| 87 start < (cdrom->track[i].offset + cdrom->track[i].length)) | |
| 88 break; | |
| 89 } | |
| 90 | |
| 91 if (i == cdrom->numtracks) | |
| 92 return NULL; | |
| 93 | |
| 94 currentTrack = i; | |
| 95 | |
| 96 *outStartFrame = start - cdrom->track[i].offset; | |
| 97 | |
| 98 if ((*outStartFrame + length) < cdrom->track[i].length) { | |
| 99 *outStopFrame = *outStartFrame + length; | |
| 100 length = 0; | |
| 101 nextTrackFrame = -1; | |
| 102 nextTrackFramesRemaining = -1; | |
| 103 } | |
| 104 else { | |
| 105 *outStopFrame = -1; | |
| 106 length -= cdrom->track[i].length - *outStartFrame; | |
| 107 nextTrackFrame = cdrom->track[i+1].offset; | |
| 108 nextTrackFramesRemaining = length; | |
| 109 } | |
| 110 | |
| 111 return &tracks[cdrom->id][i]; | |
| 112 } | |
| 113 | |
| 114 /* Setup another file for playback, or stop playback (called from another thread) */ | |
| 115 static void CompletionProc (SDL_CD *cdrom) | |
| 116 { | |
| 117 | |
| 118 Lock (); | |
| 119 | |
| 120 if (nextTrackFrame > 0 && nextTrackFramesRemaining > 0) { | |
| 121 | |
| 122 /* Load the next file to play */ | |
| 123 int startFrame, stopFrame; | |
| 124 FSRef *file; | |
| 125 | |
| 126 PauseFile (); | |
| 127 ReleaseFile (); | |
| 128 | |
| 129 file = GetFileForOffset (cdrom, nextTrackFrame, | |
| 130 nextTrackFramesRemaining, &startFrame, &stopFrame); | |
| 131 | |
| 132 if (file == NULL) { | |
| 133 status = CD_STOPPED; | |
| 134 Unlock (); | |
| 135 return; | |
| 136 } | |
| 137 | |
| 138 LoadFile (file, startFrame, stopFrame); | |
| 139 | |
| 140 SetCompletionProc (CompletionProc, cdrom); | |
| 141 | |
| 142 PlayFile (); | |
| 143 } | |
| 144 else { | |
| 145 | |
| 146 /* Release the current file */ | |
| 147 PauseFile (); | |
| 148 ReleaseFile (); | |
| 149 status = CD_STOPPED; | |
| 150 } | |
| 151 | |
| 152 Unlock (); | |
| 153 } | |
| 154 | |
| 155 | |
| 156 #pragma mark -- Driver Functions -- | |
| 157 | |
| 158 /* Initialize */ | |
| 159 int SDL_SYS_CDInit (void) | |
| 160 { | |
| 161 /* Initialize globals */ | |
| 162 volumes = NULL; | |
| 163 tracks = NULL; | |
| 164 status = CD_STOPPED; | |
| 165 nextTrackFrame = -1; | |
| 166 nextTrackFramesRemaining = -1; | |
| 167 fakeCD = SDL_FALSE; | |
| 168 currentTrack = -1; | |
| 169 didReadTOC = SDL_FALSE; | |
| 170 cacheTOCNumTracks = -1; | |
| 171 currentDrive = -1; | |
| 172 | |
| 173 /* Fill in function pointers */ | |
| 174 SDL_CDcaps.Name = SDL_SYS_CDName; | |
| 175 SDL_CDcaps.Open = SDL_SYS_CDOpen; | |
| 176 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC; | |
| 177 SDL_CDcaps.Status = SDL_SYS_CDStatus; | |
| 178 SDL_CDcaps.Play = SDL_SYS_CDPlay; | |
| 179 SDL_CDcaps.Pause = SDL_SYS_CDPause; | |
| 180 SDL_CDcaps.Resume = SDL_SYS_CDResume; | |
| 181 SDL_CDcaps.Stop = SDL_SYS_CDStop; | |
| 182 SDL_CDcaps.Eject = SDL_SYS_CDEject; | |
| 183 SDL_CDcaps.Close = SDL_SYS_CDClose; | |
| 184 | |
| 185 /* | |
| 186 Read the list of "drives" | |
| 187 | |
| 188 This is currently a hack that infers drives from | |
| 189 mounted audio CD volumes, rather than | |
| 190 actual CD-ROM devices - which means it may not | |
| 191 act as expected sometimes. | |
| 192 */ | |
| 193 | |
| 194 /* Find out how many cd volumes are mounted */ | |
| 195 SDL_numcds = DetectAudioCDVolumes (NULL, 0); | |
| 196 | |
| 197 /* | |
| 198 If there are no volumes, fake a cd device | |
| 199 so tray empty can be reported. | |
| 200 */ | |
| 201 if (SDL_numcds == 0) { | |
| 202 | |
| 203 fakeCD = SDL_TRUE; | |
| 204 SDL_numcds = 1; | |
| 205 status = CD_TRAYEMPTY; | |
| 206 | |
| 207 return 0; | |
| 208 } | |
| 209 | |
| 210 /* Allocate space for volumes */ | |
| 211 volumes = (FSVolumeRefNum*) calloc (1, sizeof(*volumes) * SDL_numcds); | |
| 212 if (volumes == NULL) { | |
| 213 SDL_OutOfMemory (); | |
| 214 return -1; | |
| 215 } | |
| 216 | |
| 217 /* Allocate space for tracks */ | |
| 218 tracks = (FSRef**) calloc (1, sizeof(*tracks) * (SDL_numcds + 1)); | |
| 219 if (tracks == NULL) { | |
| 220 SDL_OutOfMemory (); | |
| 221 return -1; | |
| 222 } | |
| 223 | |
| 224 /* Mark the end of the tracks array */ | |
| 225 tracks[ SDL_numcds ] = (FSRef*)-1; | |
| 226 | |
| 227 /* | |
| 228 Redetect, now save all volumes for later | |
| 229 Update SDL_numcds just in case it changed | |
| 230 */ | |
| 231 { | |
| 232 int numVolumes = SDL_numcds; | |
| 233 | |
| 234 SDL_numcds = DetectAudioCDVolumes (volumes, numVolumes); | |
| 235 | |
| 236 /* If more cds suddenly show up, ignore them */ | |
| 237 if (SDL_numcds > numVolumes) { | |
| 238 SDL_SetError ("Some CD's were added but they will be ignored"); | |
| 239 SDL_numcds = numVolumes; | |
| 240 } | |
| 241 } | |
| 242 | |
| 243 return 0; | |
| 244 } | |
| 245 | |
| 246 /* Shutdown and cleanup */ | |
| 247 void SDL_SYS_CDQuit(void) | |
| 248 { | |
| 249 ReleaseFile(); | |
| 250 | |
| 251 if (volumes != NULL) | |
| 252 free (volumes); | |
| 253 | |
| 254 if (tracks != NULL) { | |
| 255 | |
| 256 FSRef **ptr; | |
| 257 for (ptr = tracks; *ptr != (FSRef*)-1; ptr++) | |
| 258 if (*ptr != NULL) | |
| 259 free (*ptr); | |
| 260 | |
| 261 free (tracks); | |
| 262 } | |
| 263 } | |
| 264 | |
| 265 /* Get the Unix disk name of the volume */ | |
| 266 static const char *SDL_SYS_CDName (int drive) | |
| 267 { | |
| 268 OSStatus err = noErr; | |
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269 HParamBlockRec pb; |
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270 GetVolParmsInfoBuffer volParmsInfo; |
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271 |
| 616 | 272 if (fakeCD) |
| 273 return "Fake CD-ROM Device"; | |
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274 |
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275 pb.ioParam.ioNamePtr = NULL; |
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276 pb.ioParam.ioVRefNum = volumes[drive]; |
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277 pb.ioParam.ioBuffer = (Ptr)&volParmsInfo; |
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278 pb.ioParam.ioReqCount = (SInt32)sizeof(volParmsInfo); |
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279 err = PBHGetVolParmsSync(&pb); |
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280 |
| 616 | 281 if (err != noErr) { |
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282 SDL_SetError ("PBHGetVolParmsSync returned %d", err); |
| 616 | 283 return NULL; |
| 284 } | |
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285 |
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286 return volParmsInfo.vMDeviceID; |
| 616 | 287 } |
| 288 | |
| 289 /* Open the "device" */ | |
| 290 static int SDL_SYS_CDOpen (int drive) | |
| 291 { | |
| 292 /* Only allow 1 device to be open */ | |
| 293 if (currentDrive >= 0) { | |
| 294 SDL_SetError ("Only one cdrom is supported"); | |
| 295 return -1; | |
| 296 } | |
| 297 else | |
| 298 currentDrive = drive; | |
| 299 | |
| 300 return drive; | |
| 301 } | |
| 302 | |
| 303 /* Get the table of contents */ | |
| 304 static int SDL_SYS_CDGetTOC (SDL_CD *cdrom) | |
| 305 { | |
| 306 if (fakeCD) { | |
| 307 SDL_SetError (kErrorFakeDevice); | |
| 308 return -1; | |
| 309 } | |
| 310 | |
| 311 if (didReadTOC) { | |
| 312 cdrom->numtracks = cacheTOCNumTracks; | |
| 313 return 0; | |
| 314 } | |
| 315 | |
| 316 | |
| 317 ReadTOCData (volumes[cdrom->id], cdrom); | |
| 318 didReadTOC = SDL_TRUE; | |
| 319 cacheTOCNumTracks = cdrom->numtracks; | |
| 320 | |
| 321 return 0; | |
| 322 } | |
| 323 | |
| 324 /* Get CD-ROM status */ | |
| 325 static CDstatus SDL_SYS_CDStatus (SDL_CD *cdrom, int *position) | |
| 326 { | |
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327 if (position) { |
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328 int trackFrame; |
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329 |
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330 Lock (); |
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331 trackFrame = GetCurrentFrame (); |
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332 Unlock (); |
| 616 | 333 |
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334 *position = cdrom->track[currentTrack].offset + trackFrame; |
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335 } |
| 616 | 336 |
| 337 return status; | |
| 338 } | |
| 339 | |
| 340 /* Start playback */ | |
| 341 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length) | |
| 342 { | |
| 343 int startFrame, stopFrame; | |
| 344 FSRef *ref; | |
| 345 | |
| 346 if (fakeCD) { | |
| 347 SDL_SetError (kErrorFakeDevice); | |
| 348 return -1; | |
| 349 } | |
| 350 | |
| 351 Lock(); | |
| 352 | |
| 353 if (LoadTracks (cdrom) < 0) | |
| 354 return -2; | |
| 355 | |
| 356 if (PauseFile () < 0) | |
| 357 return -3; | |
| 358 | |
| 359 if (ReleaseFile () < 0) | |
| 360 return -4; | |
| 361 | |
| 362 ref = GetFileForOffset (cdrom, start, length, &startFrame, &stopFrame); | |
| 363 if (ref == NULL) { | |
| 364 SDL_SetError ("SDL_SYS_CDPlay: No file for start=%d, length=%d", start, length); | |
| 365 return -5; | |
| 366 } | |
| 367 | |
| 368 if (LoadFile (ref, startFrame, stopFrame) < 0) | |
| 369 return -6; | |
| 370 | |
| 371 SetCompletionProc (CompletionProc, cdrom); | |
| 372 | |
| 373 if (PlayFile () < 0) | |
| 374 return -7; | |
| 375 | |
| 376 status = CD_PLAYING; | |
| 377 | |
| 378 Unlock(); | |
| 379 | |
| 380 return 0; | |
| 381 } | |
| 382 | |
| 383 /* Pause playback */ | |
| 384 static int SDL_SYS_CDPause(SDL_CD *cdrom) | |
| 385 { | |
| 386 if (fakeCD) { | |
| 387 SDL_SetError (kErrorFakeDevice); | |
| 388 return -1; | |
| 389 } | |
| 390 | |
| 391 Lock (); | |
| 392 | |
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393 if (PauseFile () < 0) { |
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394 Unlock (); |
| 616 | 395 return -2; |
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396 } |
| 616 | 397 |
| 398 status = CD_PAUSED; | |
| 399 | |
| 400 Unlock (); | |
| 401 | |
| 402 return 0; | |
| 403 } | |
| 404 | |
| 405 /* Resume playback */ | |
| 406 static int SDL_SYS_CDResume(SDL_CD *cdrom) | |
| 407 { | |
| 408 if (fakeCD) { | |
| 409 SDL_SetError (kErrorFakeDevice); | |
| 410 return -1; | |
| 411 } | |
| 412 | |
| 413 Lock (); | |
| 414 | |
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415 if (PauseFile () < 0) { |
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416 Unlock (); |
| 616 | 417 return -2; |
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418 } |
| 616 | 419 |
| 420 status = CD_PLAYING; | |
| 421 | |
| 422 Unlock (); | |
| 423 | |
| 424 return 0; | |
| 425 } | |
| 426 | |
| 427 /* Stop playback */ | |
| 428 static int SDL_SYS_CDStop(SDL_CD *cdrom) | |
| 429 { | |
| 430 if (fakeCD) { | |
| 431 SDL_SetError (kErrorFakeDevice); | |
| 432 return -1; | |
| 433 } | |
| 434 | |
| 435 Lock (); | |
| 436 | |
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437 if (PauseFile () < 0) { |
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438 Unlock (); |
| 616 | 439 return -2; |
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440 } |
| 616 | 441 |
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442 if (ReleaseFile () < 0) { |
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443 Unlock (); |
| 616 | 444 return -3; |
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445 } |
| 616 | 446 |
| 447 status = CD_STOPPED; | |
| 448 | |
| 449 Unlock (); | |
| 450 | |
| 451 return 0; | |
| 452 } | |
| 453 | |
| 454 /* Eject the CD-ROM (Unmount the volume) */ | |
| 455 static int SDL_SYS_CDEject(SDL_CD *cdrom) | |
| 456 { | |
| 457 OSStatus err; | |
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458 HParamBlockRec pb; |
| 616 | 459 |
| 460 if (fakeCD) { | |
| 461 SDL_SetError (kErrorFakeDevice); | |
| 462 return -1; | |
| 463 } | |
| 464 | |
| 465 Lock (); | |
| 466 | |
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467 if (PauseFile () < 0) { |
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468 Unlock (); |
| 616 | 469 return -2; |
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768
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470 } |
| 616 | 471 |
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768
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472 if (ReleaseFile () < 0) { |
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473 Unlock (); |
| 616 | 474 return -3; |
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768
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475 } |
| 616 | 476 |
| 477 status = CD_STOPPED; | |
| 478 | |
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479 // Eject the volume |
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480 pb.ioParam.ioNamePtr = NULL; |
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481 pb.ioParam.ioVRefNum = volumes[cdrom->id]; |
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482 err = PBUnmountVol((ParamBlockRec *) &pb); |
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483 |
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484 if (err != noErr) { |
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485 Unlock (); |
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486 SDL_SetError ("PBUnmountVol returned %d", err); |
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487 return -4; |
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488 } |
| 616 | 489 |
| 490 status = CD_TRAYEMPTY; | |
| 491 | |
| 492 /* Invalidate volume and track info */ | |
| 493 volumes[cdrom->id] = 0; | |
| 494 free (tracks[cdrom->id]); | |
| 495 tracks[cdrom->id] = NULL; | |
| 496 | |
| 497 Unlock (); | |
| 498 | |
| 499 return 0; | |
| 500 } | |
| 501 | |
| 502 /* Close the CD-ROM */ | |
| 503 static void SDL_SYS_CDClose(SDL_CD *cdrom) | |
| 504 { | |
| 505 currentDrive = -1; | |
| 506 return; | |
| 507 } | |
| 508 |