2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2009 Sam Lantinga
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
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 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "SDL_config.h"
24 #ifdef SDL_CDROM_MACOS
26 /* MacOS functions for system-level CD-ROM audio control */
30 #include <LowMem.h> /* Use entry table macros, not functions in InterfaceLib */
32 #include "SDL_cdrom.h"
33 #include "../SDL_syscdrom.h"
34 #include "SDL_syscdrom_c.h"
36 /* Added by Matt Slot */
37 #if !defined(LMGetUnitTableEntryCount)
38 #define LMGetUnitTableEntryCount() *(short *)0x01D2
41 /* The maximum number of CD-ROM drives we'll detect */
44 /* A list of available CD-ROM drives */
45 static long SDL_cdversion = 0;
52 } SDL_cdlist[MAX_DRIVES];
53 static StringPtr gDriverName = "\p.AppleCD";
55 /* The system-dependent CD control functions */
56 static const char *SDL_SYS_CDName(int drive);
57 static int SDL_SYS_CDOpen(int drive);
58 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom);
59 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position);
60 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length);
61 static int SDL_SYS_CDPause(SDL_CD *cdrom);
62 static int SDL_SYS_CDResume(SDL_CD *cdrom);
63 static int SDL_SYS_CDStop(SDL_CD *cdrom);
64 static int SDL_SYS_CDEject(SDL_CD *cdrom);
65 static void SDL_SYS_CDClose(SDL_CD *cdrom);
67 static short SDL_SYS_ShortToBCD(short value)
69 return((value % 10) + (value / 10) * 0x10); /* Convert value to BCD */
72 static short SDL_SYS_BCDToShort(short value)
74 return((value % 0x10) + (value / 0x10) * 10); /* Convert value from BCD */
77 int SDL_SYS_CDInit(void)
84 /* Check that the software is available */
85 if (Gestalt(kGestaltAudioCDSelector, &SDL_cdversion) ||
86 !SDL_cdversion) return(0);
88 /* Fill in our driver capabilities */
89 SDL_CDcaps.Name = SDL_SYS_CDName;
90 SDL_CDcaps.Open = SDL_SYS_CDOpen;
91 SDL_CDcaps.GetTOC = SDL_SYS_CDGetTOC;
92 SDL_CDcaps.Status = SDL_SYS_CDStatus;
93 SDL_CDcaps.Play = SDL_SYS_CDPlay;
94 SDL_CDcaps.Pause = SDL_SYS_CDPause;
95 SDL_CDcaps.Resume = SDL_SYS_CDResume;
96 SDL_CDcaps.Stop = SDL_SYS_CDStop;
97 SDL_CDcaps.Eject = SDL_SYS_CDEject;
98 SDL_CDcaps.Close = SDL_SYS_CDClose;
100 /* Walk the list, count each AudioCD driver, and save the refnums */
102 last = 0 - LMGetUnitTableEntryCount();
103 for(dRefNum = first; dRefNum >= last; dRefNum--) {
106 DCtlHandle deviceEntry;
108 deviceEntry = GetDCtlEntry(dRefNum);
109 if (! deviceEntry) continue;
111 /* Is this an .AppleCD ? */
112 namePtr = (*deviceEntry)->dCtlFlags & (1L << dRAMBased) ?
113 ((StringPtr) ((DCtlPtr) deviceEntry)->dCtlDriver + 18) :
114 ((StringPtr) (*deviceEntry)->dCtlDriver + 18);
115 BlockMoveData(namePtr, driverName, namePtr[0]+1);
116 if (driverName[0] > gDriverName[0]) driverName[0] = gDriverName[0];
117 if (! EqualString(driverName, gDriverName, false, false)) continue;
119 /* Record the basic info for each drive */
120 SDL_cdlist[SDL_numcds].dRefNum = dRefNum;
121 BlockMoveData(namePtr + 1, SDL_cdlist[SDL_numcds].name, namePtr[0]);
122 SDL_cdlist[SDL_numcds].name[namePtr[0]] = 0;
123 SDL_cdlist[SDL_numcds].hasAudio = false;
129 static const char *SDL_SYS_CDName(int drive)
131 return(SDL_cdlist[drive].name);
134 static int get_drivenum(int drive)
136 QHdr *driveQ = GetDrvQHdr();
139 /* Update the drive number */
140 SDL_cdlist[drive].driveNum = 0;
141 if ( driveQ->qTail ) {
142 driveQ->qTail->qLink = 0;
144 for ( driveElem=(DrvQEl *)driveQ->qHead; driveElem;
145 driveElem = (DrvQEl *)driveElem->qLink ) {
146 if ( driveElem->dQRefNum == SDL_cdlist[drive].dRefNum ) {
147 SDL_cdlist[drive].driveNum = driveElem->dQDrive;
151 return(SDL_cdlist[drive].driveNum);
154 static int SDL_SYS_CDOpen(int drive)
159 static int SDL_SYS_CDGetTOC(SDL_CD *cdrom)
162 CDTrackData tracks[SDL_MAX_TRACKS];
165 /* Get the number of tracks on the CD by examining the TOC */
166 SDL_memset(&cdpb, 0, sizeof(cdpb));
167 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
168 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
169 cdpb.csCode = kReadTOC;
170 cdpb.csParam.words[0] = kGetTrackRange;
171 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
172 SDL_SetError("PBControlSync() failed");
177 SDL_SYS_BCDToShort(cdpb.csParam.bytes[1]) -
178 SDL_SYS_BCDToShort(cdpb.csParam.bytes[0]) + 1;
179 if ( cdrom->numtracks > SDL_MAX_TRACKS )
180 cdrom->numtracks = SDL_MAX_TRACKS;
181 cdrom->status = CD_STOPPED;
182 cdrom->cur_track = 0; /* Apparently these are set elsewhere */
183 cdrom->cur_frame = 0; /* Apparently these are set elsewhere */
186 /* Get the lead out area of the CD by examining the TOC */
187 SDL_memset(&cdpb, 0, sizeof(cdpb));
188 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
189 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
190 cdpb.csCode = kReadTOC;
191 cdpb.csParam.words[0] = kGetLeadOutArea;
192 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
193 SDL_SetError("PBControlSync() failed");
197 leadout = MSF_TO_FRAMES(
198 SDL_SYS_BCDToShort(cdpb.csParam.bytes[0]),
199 SDL_SYS_BCDToShort(cdpb.csParam.bytes[1]),
200 SDL_SYS_BCDToShort(cdpb.csParam.bytes[2]));
202 /* Get an array of track locations by examining the TOC */
203 SDL_memset(tracks, 0, sizeof(tracks));
204 SDL_memset(&cdpb, 0, sizeof(cdpb));
205 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
206 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
207 cdpb.csCode = kReadTOC;
208 cdpb.csParam.words[0] = kGetTrackEntries; /* Type of Query */
209 * ((long *) (cdpb.csParam.words+1)) = (long) tracks;
210 cdpb.csParam.words[3] = cdrom->numtracks * sizeof(tracks[0]);
211 * ((char *) (cdpb.csParam.words+4)) = 1; /* First track */
212 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
213 SDL_SetError("PBControlSync() failed");
217 /* Read all the track TOC entries */
218 SDL_cdlist[cdrom->id].hasAudio = false;
219 for ( i=0; i<cdrom->numtracks; ++i )
221 cdrom->track[i].id = i+1;
222 if (tracks[i].entry.control & kDataTrackMask)
223 cdrom->track[i].type = SDL_DATA_TRACK;
226 cdrom->track[i].type = SDL_AUDIO_TRACK;
227 SDL_cdlist[SDL_numcds].hasAudio = true;
230 cdrom->track[i].offset = MSF_TO_FRAMES(
231 SDL_SYS_BCDToShort(tracks[i].entry.min),
232 SDL_SYS_BCDToShort(tracks[i].entry.min),
233 SDL_SYS_BCDToShort(tracks[i].entry.frame));
234 cdrom->track[i].length = MSF_TO_FRAMES(
235 SDL_SYS_BCDToShort(tracks[i+1].entry.min),
236 SDL_SYS_BCDToShort(tracks[i+1].entry.min),
237 SDL_SYS_BCDToShort(tracks[i+1].entry.frame)) -
238 cdrom->track[i].offset;
241 /* Apparently SDL wants a fake last entry */
242 cdrom->track[i].offset = leadout;
243 cdrom->track[i].length = 0;
248 /* Get CD-ROM status */
249 static CDstatus SDL_SYS_CDStatus(SDL_CD *cdrom, int *position)
252 CDstatus status = CD_ERROR;
253 Boolean spinning = false;
255 if (position) *position = 0;
257 /* Get the number of tracks on the CD by examining the TOC */
258 if ( ! get_drivenum(cdrom->id) ) {
259 return(CD_TRAYEMPTY);
261 SDL_memset(&cdpb, 0, sizeof(cdpb));
262 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
263 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
264 cdpb.csCode = kReadTOC;
265 cdpb.csParam.words[0] = kGetTrackRange;
266 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
267 SDL_SetError("PBControlSync() failed");
272 SDL_SYS_BCDToShort(cdpb.csParam.bytes[1]) -
273 SDL_SYS_BCDToShort(cdpb.csParam.bytes[0]) + 1;
274 if ( cdrom->numtracks > SDL_MAX_TRACKS )
275 cdrom->numtracks = SDL_MAX_TRACKS;
276 cdrom->cur_track = 0; /* Apparently these are set elsewhere */
277 cdrom->cur_frame = 0; /* Apparently these are set elsewhere */
280 if (1 || SDL_cdlist[cdrom->id].hasAudio) {
281 /* Get the current playback status */
282 SDL_memset(&cdpb, 0, sizeof(cdpb));
283 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
284 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
285 cdpb.csCode = kAudioStatus;
286 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
287 SDL_SetError("PBControlSync() failed");
291 switch(cdpb.csParam.cd.status) {
301 status = CD_PLAYING; /* What should I do here? */
319 if (spinning && position) *position = MSF_TO_FRAMES(
320 SDL_SYS_BCDToShort(cdpb.csParam.cd.minute),
321 SDL_SYS_BCDToShort(cdpb.csParam.cd.second),
322 SDL_SYS_BCDToShort(cdpb.csParam.cd.frame));
325 status = CD_ERROR; /* What should I do here? */
331 static int SDL_SYS_CDPlay(SDL_CD *cdrom, int start, int length)
335 /* Pause the current audio playback to avoid audible artifacts */
336 if ( SDL_SYS_CDPause(cdrom) < 0 ) {
340 /* Specify the AudioCD playback mode */
341 SDL_memset(&cdpb, 0, sizeof(cdpb));
342 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
343 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
344 cdpb.csCode = kSetPlayMode;
345 cdpb.csParam.bytes[0] = false; /* Repeat? */
346 cdpb.csParam.bytes[1] = kPlayModeSequential; /* Play mode */
347 /* ¥¥¥ÊTreat as soft error, NEC Drive doesnt support this call ¥¥¥ */
348 PBControlSync((ParmBlkPtr) &cdpb);
351 /* Specify the end of audio playback */
352 SDL_memset(&cdpb, 0, sizeof(cdpb));
353 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
354 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
355 cdpb.csCode = kAudioStop;
356 cdpb.csParam.words[0] = kBlockPosition; /* Position Mode */
357 *(long *) (cdpb.csParam.words + 1) = start+length-1; /* Search Address */
358 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
359 SDL_SetError("PBControlSync() failed");
363 /* Specify the start of audio playback, and start it */
364 SDL_memset(&cdpb, 0, sizeof(cdpb));
365 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
366 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
367 cdpb.csCode = kAudioPlay;
368 cdpb.csParam.words[0] = kBlockPosition; /* Position Mode */
369 *(long *) (cdpb.csParam.words + 1) = start+1; /* Search Address */
370 cdpb.csParam.words[3] = false; /* Stop address? */
371 cdpb.csParam.words[4] = kStereoPlayMode; /* Audio Play Mode */
372 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
373 SDL_SetError("PBControlSync() failed");
377 /* Specify the end of audio playback */
378 FRAMES_TO_MSF(start+length, &m, &s, &f);
379 SDL_memset(&cdpb, 0, sizeof(cdpb));
380 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
381 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
382 cdpb.csCode = kAudioStop;
383 cdpb.csParam.words[0] = kTrackPosition; /* Position Mode */
384 cdpb.csParam.words[1] = 0; /* Search Address (hiword)*/
385 cdpb.csParam.words[2] = /* Search Address (loword)*/
386 SDL_SYS_ShortToBCD(cdrom->numtracks);
387 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
388 SDL_SetError("PBControlSync() failed");
392 /* Specify the start of audio playback, and start it */
393 FRAMES_TO_MSF(start, &m, &s, &f);
394 SDL_memset(&cdpb, 0, sizeof(cdpb));
395 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
396 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
397 cdpb.csCode = kAudioPlay;
398 cdpb.csParam.words[0] = kTrackPosition; /* Position Mode */
399 cdpb.csParam.words[1] = 0; /* Search Address (hiword)*/
400 cdpb.csParam.words[2] = SDL_SYS_ShortToBCD(1); /* Search Address (loword)*/
401 cdpb.csParam.words[3] = false; /* Stop address? */
402 cdpb.csParam.words[4] = kStereoPlayMode; /* Audio Play Mode */
403 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
404 SDL_SetError("PBControlSync() failed");
413 static int SDL_SYS_CDPause(SDL_CD *cdrom)
417 SDL_memset(&cdpb, 0, sizeof(cdpb));
418 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
419 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
420 cdpb.csCode = kAudioPause;
421 cdpb.csParam.words[0] = 0; /* Pause/Continue Flag (hiword) */
422 cdpb.csParam.words[1] = 1; /* Pause/Continue Flag (loword) */
423 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
424 SDL_SetError("PBControlSync() failed");
431 static int SDL_SYS_CDResume(SDL_CD *cdrom)
435 SDL_memset(&cdpb, 0, sizeof(cdpb));
436 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
437 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
438 cdpb.csCode = kAudioPause;
439 cdpb.csParam.words[0] = 0; /* Pause/Continue Flag (hiword) */
440 cdpb.csParam.words[1] = 0; /* Pause/Continue Flag (loword) */
441 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
442 SDL_SetError("PBControlSync() failed");
449 static int SDL_SYS_CDStop(SDL_CD *cdrom)
453 SDL_memset(&cdpb, 0, sizeof(cdpb));
454 cdpb.ioVRefNum = SDL_cdlist[cdrom->id].driveNum;
455 cdpb.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
456 cdpb.csCode = kAudioStop;
457 cdpb.csParam.words[0] = 0; /* Position Mode */
458 cdpb.csParam.words[1] = 0; /* Search Address (hiword) */
459 cdpb.csParam.words[2] = 0; /* Search Address (loword) */
460 if ( PBControlSync((ParmBlkPtr)&cdpb) != noErr ) {
461 SDL_SetError("PBControlSync() failed");
467 /* Eject the CD-ROM */
468 static int SDL_SYS_CDEject(SDL_CD *cdrom)
470 Boolean disk = false;
471 QHdr *driveQ = GetDrvQHdr();
476 for ( driveElem = (DrvQEl *) driveQ->qHead; driveElem; driveElem =
477 (driveElem) ? ((DrvQEl *) driveElem->qLink) :
478 ((DrvQEl *) driveQ->qHead) ) {
479 if ( driveQ->qTail ) {
480 driveQ->qTail->qLink = 0;
482 if ( driveElem->dQRefNum != SDL_cdlist[cdrom->id].dRefNum ) {
486 /* Does drive contain mounted volume? If not, skip */
487 SDL_memset(&hpb, 0, sizeof(hpb));
488 hpb.volumeParam.ioVRefNum = driveElem->dQDrive;
489 if ( PBHGetVInfoSync(&hpb) != noErr ) {
492 if ( (UnmountVol(0, driveElem->dQDrive) == noErr) &&
493 (Eject(0, driveElem->dQDrive) == noErr) ) {
494 driveElem = 0; /* Clear pointer to reset our loop */
499 /* If no disk is present, just eject the tray */
501 SDL_memset(&cpb, 0, sizeof(cpb));
502 cpb.cntrlParam.ioVRefNum = 0; /* No Drive */
503 cpb.cntrlParam.ioCRefNum = SDL_cdlist[cdrom->id].dRefNum;
504 cpb.cntrlParam.csCode = kEjectTheDisc;
505 if ( PBControlSync((ParmBlkPtr)&cpb) != noErr ) {
506 SDL_SetError("PBControlSync() failed");
513 /* Close the CD-ROM handle */
514 static void SDL_SYS_CDClose(SDL_CD *cdrom)
519 void SDL_SYS_CDQuit(void)
522 SDL_memset(SDL_cdlist + SDL_numcds, 0, sizeof(SDL_cdlist[0]));
525 #endif /* SDL_CDROM_MACOS */