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comparison src/cdrom/macos/SDL_syscdrom.c @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
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children e8157fcb3114
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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
20 slouken@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id$";
26 #endif
27
28 /* MacOS functions for system-level CD-ROM audio control */
29
30 #include <Devices.h>
31 #include <Files.h>
32 #include <LowMem.h> /* Use entry table macros, not functions in InterfaceLib */
33
34 #include "SDL_cdrom.h"
35 #include "SDL_syscdrom.h"
36 #include "SDL_syscdrom_c.h"
37
38 /* Added by Matt Slot */
39 #if !defined(LMGetUnitTableEntryCount)
40 #define LMGetUnitTableEntryCount() *(short *)0x01D2
41 #endif
42
43 /* The maximum number of CD-ROM drives we'll detect */
44 #define MAX_DRIVES 26
45
46 /* A list of available CD-ROM drives */
47 static long SDL_cdversion = 0;
48 static struct {
49 short dRefNum;
50 short driveNum;
51 long frames;
52 char name[256];
53 Boolean hasAudio;
54 } SDL_cdlist[MAX_DRIVES];
55 static StringPtr gDriverName = "\p.AppleCD";
56
57 /* The system-dependent CD control functions */
58 static const char *SDL_SYS_CDName(int drive);
59 static int SDL_SYS_CDOpen(int drive);
60 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
61 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
62 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
63 static int SDL_SYS_CDPause(SDL_CD *cdrom);
64 static int SDL_SYS_CDResume(SDL_CD *cdrom);
65 static int SDL_SYS_CDStop(SDL_CD *cdrom);
66 static int SDL_SYS_CDEject(SDL_CD *cdrom);
67 static void SDL_SYS_CDClose(SDL_CD *cdrom);
68
69 static short SDL_SYS_ShortToBCD(short value)
70 {
71 return((value % 10) + (value / 10) * 0x10); /* Convert value to BCD */
72 }
73
74 static short SDL_SYS_BCDToShort(short value)
75 {
76 return((value % 0x10) + (value / 0x10) * 10); /* Convert value from BCD */
77 }
78
79 int SDL_SYS_CDInit(void)
80 {
81 SInt16 dRefNum = 0;
82 SInt16 first, last;
83
84 SDL_numcds = 0;
85
86 /* Check that the software is available */
87 if (Gestalt(kGestaltAudioCDSelector, &SDL_cdversion) ||
88 !SDL_cdversion) return(0);
89
90 /* Fill in our driver capabilities */
91 SDL_CDcaps.Name = SDL_SYS_CDName;
92 SDL_CDcaps.Open = SDL_SYS_CDOpen;
93 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
94 SDL_CDcaps.Status = SDL_SYS_CDStatus;
95 SDL_CDcaps.Play = SDL_SYS_CDPlay;
96 SDL_CDcaps.Pause = SDL_SYS_CDPause;
97 SDL_CDcaps.Resume = SDL_SYS_CDResume;
98 SDL_CDcaps.Stop = SDL_SYS_CDStop;
99 SDL_CDcaps.Eject = SDL_SYS_CDEject;
100 SDL_CDcaps.Close = SDL_SYS_CDClose;
101
102 /* Walk the list, count each AudioCD driver, and save the refnums */
103 first = -1;
104 last = 0 - LMGetUnitTableEntryCount();
105 for(dRefNum = first; dRefNum >= last; dRefNum--) {
106 Str255 driverName;
107 StringPtr namePtr;
108 DCtlHandle deviceEntry;
109
110 deviceEntry = GetDCtlEntry(dRefNum);
111 if (! deviceEntry) continue;
112
113 /* Is this an .AppleCD ? */
114 namePtr = (*deviceEntry)->dCtlFlags & (1L << dRAMBased) ?
115 ((StringPtr) ((DCtlPtr) deviceEntry)->dCtlDriver + 18) :
116 ((StringPtr) (*deviceEntry)->dCtlDriver + 18);
117 BlockMoveData(namePtr, driverName, namePtr[0]+1);
118 if (driverName[0] > gDriverName[0]) driverName[0] = gDriverName[0];
119 if (! EqualString(driverName, gDriverName, false, false)) continue;
120
121 /* Record the basic info for each drive */
122 SDL_cdlist[SDL_numcds].dRefNum = dRefNum;
123 BlockMoveData(namePtr + 1, SDL_cdlist[SDL_numcds].name, namePtr[0]);
124 SDL_cdlist[SDL_numcds].name[namePtr[0]] = 0;
125 SDL_cdlist[SDL_numcds].hasAudio = false;
126 SDL_numcds++;
127 }
128 return(0);
129 }
130
131 static const char *SDL_SYS_CDName(int drive)
132 {
133 return(SDL_cdlist[drive].name);
134 }
135
136 static int get_drivenum(int drive)
137 {
138 QHdr *driveQ = GetDrvQHdr();
139 DrvQEl *driveElem;
140
141 /* Update the drive number */
142 SDL_cdlist[drive].driveNum = 0;
143 if ( driveQ->qTail ) {
144 driveQ->qTail->qLink = 0;
145 }
146 for ( driveElem=(DrvQEl *)driveQ->qHead; driveElem;
147 driveElem = (DrvQEl *)driveElem->qLink ) {
148 if ( driveElem->dQRefNum == SDL_cdlist[drive].dRefNum ) {
149 SDL_cdlist[drive].driveNum = driveElem->dQDrive;
150 break;
151 }
152 }
153 return(SDL_cdlist[drive].driveNum);
154 }
155
156 static int SDL_SYS_CDOpen(int drive)
157 {
158 return(drive);
159 }
160
161 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
162 {
163 CDCntrlParam cdpb;
164 CDTrackData tracks[SDL_MAX_TRACKS];
165 long i, leadout;
166
167 /* Get the number of tracks on the CD by examining the TOC */
168 memset(&cdpb, 0, sizeof(cdpb));
169 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
170 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
171 cdpb.csCode = kReadTOC;
172 cdpb.csParam.words[0] = kGetTrackRange;
173 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
174 SDL_SetError("PBControlSync() failed");
175 return(-1);
176 }
177
178 cdrom->numtracks =
179 SDL_SYS_BCDToShort(cdpb.csParam.bytes[1]) -
180 SDL_SYS_BCDToShort(cdpb.csParam.bytes[0]) + 1;
181 if ( cdrom->numtracks > SDL_MAX_TRACKS )
182 cdrom->numtracks = SDL_MAX_TRACKS;
183 cdrom->status = CD_STOPPED;
184 cdrom->cur_track = 0; /* Apparently these are set elsewhere */
185 cdrom->cur_frame = 0; /* Apparently these are set elsewhere */
186
187
188 /* Get the lead out area of the CD by examining the TOC */
189 memset(&cdpb, 0, sizeof(cdpb));
190 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
191 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
192 cdpb.csCode = kReadTOC;
193 cdpb.csParam.words[0] = kGetLeadOutArea;
194 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
195 SDL_SetError("PBControlSync() failed");
196 return(-1);
197 }
198
199 leadout = MSF_TO_FRAMES(
200 SDL_SYS_BCDToShort(cdpb.csParam.bytes[0]),
201 SDL_SYS_BCDToShort(cdpb.csParam.bytes[1]),
202 SDL_SYS_BCDToShort(cdpb.csParam.bytes[2]));
203
204 /* Get an array of track locations by examining the TOC */
205 memset(tracks, 0, sizeof(tracks));
206 memset(&cdpb, 0, sizeof(cdpb));
207 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
208 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
209 cdpb.csCode = kReadTOC;
210 cdpb.csParam.words[0] = kGetTrackEntries; /* Type of Query */
211 * ((long *) (cdpb.csParam.words+1)) = (long) tracks;
212 cdpb.csParam.words[3] = cdrom->numtracks * sizeof(tracks[0]);
213 * ((char *) (cdpb.csParam.words+4)) = 1; /* First track */
214 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
215 SDL_SetError("PBControlSync() failed");
216 return(-1);
217 }
218
219 /* Read all the track TOC entries */
220 SDL_cdlist[cdrom->id].hasAudio = false;
221 for ( i=0; i<cdrom->numtracks; ++i )
222 {
223 cdrom->track[i].id = i+1;
224 if (tracks[i].entry.control & kDataTrackMask)
225 cdrom->track[i].type = SDL_DATA_TRACK;
226 else
227 {
228 cdrom->track[i].type = SDL_AUDIO_TRACK;
229 SDL_cdlist[SDL_numcds].hasAudio = true;
230 }
231
232 cdrom->track[i].offset = MSF_TO_FRAMES(
233 SDL_SYS_BCDToShort(tracks[i].entry.min),
234 SDL_SYS_BCDToShort(tracks[i].entry.min),
235 SDL_SYS_BCDToShort(tracks[i].entry.frame));
236 cdrom->track[i].length = MSF_TO_FRAMES(
237 SDL_SYS_BCDToShort(tracks[i+1].entry.min),
238 SDL_SYS_BCDToShort(tracks[i+1].entry.min),
239 SDL_SYS_BCDToShort(tracks[i+1].entry.frame)) -
240 cdrom->track[i].offset;
241 }
242
243 /* Apparently SDL wants a fake last entry */
244 cdrom->track[i].offset = leadout;
245 cdrom->track[i].length = 0;
246
247 return(0);
248 }
249
250 /* Get CD-ROM status */
251 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
252 {
253 CDCntrlParam cdpb;
254 CDstatus status = CD_ERROR;
255 Boolean spinning = false;
256
257 if (position) *position = 0;
258
259 /* Get the number of tracks on the CD by examining the TOC */
260 if ( ! get_drivenum(cdrom->id) ) {
261 return(CD_TRAYEMPTY);
262 }
263 memset(&cdpb, 0, sizeof(cdpb));
264 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
265 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
266 cdpb.csCode = kReadTOC;
267 cdpb.csParam.words[0] = kGetTrackRange;
268 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
269 SDL_SetError("PBControlSync() failed");
270 return(CD_ERROR);
271 }
272
273 cdrom->numtracks =
274 SDL_SYS_BCDToShort(cdpb.csParam.bytes[1]) -
275 SDL_SYS_BCDToShort(cdpb.csParam.bytes[0]) + 1;
276 if ( cdrom->numtracks > SDL_MAX_TRACKS )
277 cdrom->numtracks = SDL_MAX_TRACKS;
278 cdrom->cur_track = 0; /* Apparently these are set elsewhere */
279 cdrom->cur_frame = 0; /* Apparently these are set elsewhere */
280
281
282 if (1 || SDL_cdlist[cdrom->id].hasAudio) {
283 /* Get the current playback status */
284 memset(&cdpb, 0, sizeof(cdpb));
285 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
286 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
287 cdpb.csCode = kAudioStatus;
288 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
289 SDL_SetError("PBControlSync() failed");
290 return(-1);
291 }
292
293 switch(cdpb.csParam.cd.status) {
294 case kStatusPlaying:
295 status = CD_PLAYING;
296 spinning = true;
297 break;
298 case kStatusPaused:
299 status = CD_PAUSED;
300 spinning = true;
301 break;
302 case kStatusMuted:
303 status = CD_PLAYING; /* What should I do here? */
304 spinning = true;
305 break;
306 case kStatusDone:
307 status = CD_STOPPED;
308 spinning = true;
309 break;
310 case kStatusStopped:
311 status = CD_STOPPED;
312 spinning = false;
313 break;
314 case kStatusError:
315 default:
316 status = CD_ERROR;
317 spinning = false;
318 break;
319 }
320
321 if (spinning && position) *position = MSF_TO_FRAMES(
322 SDL_SYS_BCDToShort(cdpb.csParam.cd.minute),
323 SDL_SYS_BCDToShort(cdpb.csParam.cd.second),
324 SDL_SYS_BCDToShort(cdpb.csParam.cd.frame));
325 }
326 else
327 status = CD_ERROR; /* What should I do here? */
328
329 return(status);
330 }
331
332 /* Start play */
333 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
334 {
335 CDCntrlParam cdpb;
336
337 /* Pause the current audio playback to avoid audible artifacts */
338 if ( SDL_SYS_CDPause(cdrom) < 0 ) {
339 return(-1);
340 }
341
342 /* Specify the AudioCD playback mode */
343 memset(&cdpb, 0, sizeof(cdpb));
344 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
345 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
346 cdpb.csCode = kSetPlayMode;
347 cdpb.csParam.bytes[0] = false; /* Repeat? */
348 cdpb.csParam.bytes[1] = kPlayModeSequential; /* Play mode */
349 /* ¥¥¥ÊTreat as soft error, NEC Drive doesnt support this call ¥¥¥ */
350 PBControlSync((ParmBlkPtr) &cdpb);
351
352 #if 1
353 /* Specify the end of audio playback */
354 memset(&cdpb, 0, sizeof(cdpb));
355 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
356 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
357 cdpb.csCode = kAudioStop;
358 cdpb.csParam.words[0] = kBlockPosition; /* Position Mode */
359 *(long *) (cdpb.csParam.words + 1) = start+length-1; /* Search Address */
360 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
361 SDL_SetError("PBControlSync() failed");
362 return(-1);
363 }
364
365 /* Specify the start of audio playback, and start it */
366 memset(&cdpb, 0, sizeof(cdpb));
367 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
368 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
369 cdpb.csCode = kAudioPlay;
370 cdpb.csParam.words[0] = kBlockPosition; /* Position Mode */
371 *(long *) (cdpb.csParam.words + 1) = start+1; /* Search Address */
372 cdpb.csParam.words[3] = false; /* Stop address? */
373 cdpb.csParam.words[4] = kStereoPlayMode; /* Audio Play Mode */
374 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
375 SDL_SetError("PBControlSync() failed");
376 return(-1);
377 }
378 #else
379 /* Specify the end of audio playback */
380 FRAMES_TO_MSF(start+length, &m, &s, &f);
381 memset(&cdpb, 0, sizeof(cdpb));
382 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
383 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
384 cdpb.csCode = kAudioStop;
385 cdpb.csParam.words[0] = kTrackPosition; /* Position Mode */
386 cdpb.csParam.words[1] = 0; /* Search Address (hiword)*/
387 cdpb.csParam.words[2] = /* Search Address (loword)*/
388 SDL_SYS_ShortToBCD(cdrom->numtracks);
389 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
390 SDL_SetError("PBControlSync() failed");
391 return(-1);
392 }
393
394 /* Specify the start of audio playback, and start it */
395 FRAMES_TO_MSF(start, &m, &s, &f);
396 memset(&cdpb, 0, sizeof(cdpb));
397 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
398 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
399 cdpb.csCode = kAudioPlay;
400 cdpb.csParam.words[0] = kTrackPosition; /* Position Mode */
401 cdpb.csParam.words[1] = 0; /* Search Address (hiword)*/
402 cdpb.csParam.words[2] = SDL_SYS_ShortToBCD(1); /* Search Address (loword)*/
403 cdpb.csParam.words[3] = false; /* Stop address? */
404 cdpb.csParam.words[4] = kStereoPlayMode; /* Audio Play Mode */
405 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
406 SDL_SetError("PBControlSync() failed");
407 return(-1);
408 }
409 #endif
410
411 return(0);
412 }
413
414 /* Pause play */
415 static int SDL_SYS_CDPause(SDL_CD *cdrom)
416 {
417 CDCntrlParam cdpb;
418
419 memset(&cdpb, 0, sizeof(cdpb));
420 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
421 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
422 cdpb.csCode = kAudioPause;
423 cdpb.csParam.words[0] = 0; /* Pause/Continue Flag (hiword) */
424 cdpb.csParam.words[1] = 1; /* Pause/Continue Flag (loword) */
425 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
426 SDL_SetError("PBControlSync() failed");
427 return(-1);
428 }
429 return(0);
430 }
431
432 /* Resume play */
433 static int SDL_SYS_CDResume(SDL_CD *cdrom)
434 {
435 CDCntrlParam cdpb;
436
437 memset(&cdpb, 0, sizeof(cdpb));
438 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
439 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
440 cdpb.csCode = kAudioPause;
441 cdpb.csParam.words[0] = 0; /* Pause/Continue Flag (hiword) */
442 cdpb.csParam.words[1] = 0; /* Pause/Continue Flag (loword) */
443 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
444 SDL_SetError("PBControlSync() failed");
445 return(-1);
446 }
447 return(0);
448 }
449
450 /* Stop play */
451 static int SDL_SYS_CDStop(SDL_CD *cdrom)
452 {
453 CDCntrlParam cdpb;
454
455 memset(&cdpb, 0, sizeof(cdpb));
456 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
457 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
458 cdpb.csCode = kAudioStop;
459 cdpb.csParam.words[0] = 0; /* Position Mode */
460 cdpb.csParam.words[1] = 0; /* Search Address (hiword) */
461 cdpb.csParam.words[2] = 0; /* Search Address (loword) */
462 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
463 SDL_SetError("PBControlSync() failed");
464 return(-1);
465 }
466 return(0);
467 }
468
469 /* Eject the CD-ROM */
470 static int SDL_SYS_CDEject(SDL_CD *cdrom)
471 {
472 Boolean disk = false;
473 QHdr *driveQ = GetDrvQHdr();
474 DrvQEl *driveElem;
475 HParamBlockRec hpb;
476 ParamBlockRec cpb;
477
478 for ( driveElem = (DrvQEl *) driveQ->qHead; driveElem; driveElem =
479 (driveElem) ? ((DrvQEl *) driveElem->qLink) :
480 ((DrvQEl *) driveQ->qHead) ) {
481 if ( driveQ->qTail ) {
482 driveQ->qTail->qLink = 0;
483 }
484 if ( driveElem->dQRefNum != SDL_cdlist[cdrom->id].dRefNum ) {
485 continue;
486 }
487
488 /* Does drive contain mounted volume? If not, skip */
489 memset(&hpb, 0, sizeof(hpb));
490 hpb.volumeParam.ioVRefNum = driveElem->dQDrive;
491 if ( PBHGetVInfoSync(&hpb) != noErr ) {
492 continue;
493 }
494 if ( (UnmountVol(0, driveElem->dQDrive) == noErr) &&
495 (Eject(0, driveElem->dQDrive) == noErr) ) {
496 driveElem = 0; /* Clear pointer to reset our loop */
497 disk = true;
498 }
499 }
500
501 /* If no disk is present, just eject the tray */
502 if (! disk) {
503 memset(&cpb, 0, sizeof(cpb));
504 cpb.cntrlParam.ioVRefNum = 0; /* No Drive */
505 cpb.cntrlParam.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
506 cpb.cntrlParam.csCode = kEjectTheDisc;
507 if ( PBControlSync((ParmBlkPtr)&cpb) != noErr ) {
508 SDL_SetError("PBControlSync() failed");
509 return(-1);
510 }
511 }
512 return(0);
513 }
514
515 /* Close the CD-ROM handle */
516 static void SDL_SYS_CDClose(SDL_CD *cdrom)
517 {
518 return;
519 }
520
521 void SDL_SYS_CDQuit(void)
522 {
523 while(SDL_numcds--)
524 memset(SDL_cdlist + SDL_numcds, 0, sizeof(SDL_cdlist[0]));
525 }
526