2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
3 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
6 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
8 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
16 #define WIN32_LEAN_AND_MEAN
32 #define HSG_CD_PLAYBACK 0
33 #define MSF_CD_PLAYBACK 1
38 typedef struct CDTrack {
43 int RBCDROM_State = 0; // CD is not used = 0
45 // CD is already used = -1
47 static CDTrack CDTrackInfo[255];
48 static UINT CDDiscID = 0;
50 static int RedBookEnabled=0, RedBookInstalled = 0;
51 static UINT CDDeviceID = 0;
52 static DWORD CDNumTracks = 0;
53 static fix Playback_Start_Time = 0;
54 static fix Playback_Pause_Time = 0;
55 static fix Playback_Length = 0;
56 static int Playback_first_track,Playback_last_track;
57 static int AUXDevice = -1;
58 static char MCIErrorMsg[256];
60 // Function Prototypes
62 unsigned long lsn_to_msf(unsigned long lsn);
63 unsigned long msf_to_lsn(unsigned long msf);
64 unsigned long msf_add(unsigned long msf1, unsigned long msf2);
65 unsigned long msf_sub(unsigned long msf1, unsigned long msf2);
67 UINT MakeCDDiscID(int tracks, unsigned long msflen, unsigned long msftrack1);
75 if (RedBookInstalled) {
76 mciSendCommand(CDDeviceID, MCI_CLOSE, 0, NULL);
85 MCI_OPEN_PARMS mciOpenParms;
86 MCI_SET_PARMS mciSetParms;
92 num_devs = auxGetNumDevs();
94 // Find CD-AUDIO device if there is one.
95 for (i = 0; i < num_devs; i++)
98 auxGetDevCaps(i, &caps, sizeof(caps));
99 if (caps.wTechnology == AUXCAPS_CDAUDIO) {
101 mprintf((0, "CD operating on AUX %d.\n", AUXDevice));
106 if (AUXDevice == -1) {
107 mprintf((1, "Unable to find CD-AUDIO device. No Redbook music.\n"));
112 // We need to identify that a cd audio driver exists
113 mciOpenParms.lpstrDeviceType = "cdaudio";
115 retval = mciSendCommand(NULL, MCI_OPEN, MCI_OPEN_TYPE | MCI_OPEN_SHAREABLE, (DWORD)(LPVOID)&mciOpenParms);
117 if (retval == MCIERR_MUST_USE_SHAREABLE) RBCDROM_State = -1;
118 else RBCDROM_State = 0;
119 mciGetErrorString(retval, MCIErrorMsg, 256);
120 mprintf((1,"RBA (%x) MCI:%s.\n", retval, MCIErrorMsg));
124 // Now we need to set the time format to MSF for Redbook Compatablity.
125 RedBookInstalled = 1;
127 CDDeviceID = mciOpenParms.wDeviceID;
129 logentry("Initializing Redbook device %d.\n", CDDeviceID);
131 mciSetParms.dwTimeFormat = MCI_FORMAT_MSF;
132 retval = mciSendCommand(CDDeviceID, MCI_SET, MCI_SET_TIME_FORMAT, (DWORD)(LPVOID)&mciSetParms);
134 mciSendCommand(CDDeviceID, MCI_CLOSE, 0, NULL);
135 mprintf((0, "Error %d. Unable to set Redbook Format.\n", retval));
138 else RedBookEnabled = 1;
143 void RBARegisterCD(void)
145 DWORD i, numtracks, retval = 0;
146 MCI_STATUS_PARMS mciStatusParms;
148 // Insure that CD is Redbook, then get track information
149 mciStatusParms.dwItem = MCI_STATUS_NUMBER_OF_TRACKS;
150 retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM,
151 (DWORD)(LPVOID)&mciStatusParms);
153 mciGetErrorString(retval, MCIErrorMsg, 256);
154 mprintf((1,"RBA MCI:%s.\n", MCIErrorMsg));
159 CDNumTracks = numtracks = mciStatusParms.dwReturn;
161 for (i = 0; i < numtracks; i++)
163 mciStatusParms.dwTrack = i+1;
164 mciStatusParms.dwItem = MCI_STATUS_POSITION;
165 retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_TRACK, (DWORD)(LPVOID)&mciStatusParms);
167 mprintf((0, "Could not retrieve information on track %d.\n", i+1));
169 CDTrackInfo[i].msf = mciStatusParms.dwReturn;
171 mciStatusParms.dwTrack = i+1;
172 mciStatusParms.dwItem = MCI_STATUS_LENGTH;
173 retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_TRACK, (DWORD)(LPVOID)&mciStatusParms);
175 mprintf((0, "Couldn't get length of track %d.\n", i+1));
177 CDTrackInfo[i].length = mciStatusParms.dwReturn;
179 // logentry("[%d] (%d:%d):(%d:%d)\n", i+1, MCI_MSF_MINUTE(CDTrackInfo[i].msf), MCI_MSF_SECOND(CDTrackInfo[i].msf), MCI_MSF_MINUTE(CDTrackInfo[i].length), MCI_MSF_SECOND(CDTrackInfo[i].length));
182 CDDiscID = GetCDDiscID();
186 long RBAGetDeviceStatus()
192 int get_track_time(int first,int last)
194 unsigned long playlen;
197 playlen = msf_sub(msf_add(CDTrackInfo[last-1].msf,CDTrackInfo[last-1].length), CDTrackInfo[first-1].msf);
199 min = MCI_MSF_MINUTE(playlen);
200 sec = MCI_MSF_SECOND(playlen);
206 int RBAPlayTrack(int track)
208 MCI_PLAY_PARMS mciPlayParms;
212 // Register CD if media has changed
213 if (!RedBookEnabled) return 0;
214 if (RBACheckMediaChange()) {
215 mprintf((0, "Unable to play track due to CD change.\n"));
220 min = min + MCI_MSF_MINUTE(CDTrackInfo[track-1].msf) + MCI_MSF_MINUTE(CDTrackInfo[track-1].length);
221 mciPlayParms.dwFrom = CDTrackInfo[track-1].msf; // MCI_MAKE_TMSF(track, 0, 0, 0);
222 mciPlayParms.dwTo = msf_add(CDTrackInfo[track-1].msf, CDTrackInfo[track-1].length);
223 retval = mciSendCommand(CDDeviceID, MCI_PLAY, MCI_FROM | MCI_TO, (DWORD)(LPVOID)&mciPlayParms);
226 mciGetErrorString(retval, MCIErrorMsg, 256);
227 mprintf((1,"RBA MCI:%s.\n", MCIErrorMsg));
228 mprintf((0, "Unable to play CD track %d.\n", track));
232 Playback_Length = i2f(get_track_time(track,track));
233 Playback_Start_Time = timer_get_fixed_seconds();
235 Playback_first_track = Playback_last_track = track;
237 mprintf( (0,"Playing Track %d (len: %d secs)\n", track, f2i(Playback_Length)) );
244 int RBAPlayTracks(int start, int end)
246 MCI_PLAY_PARMS mciPlayParms;
249 Playback_Start_Time = 0;
252 // Register CD if media has changed
253 if (!RedBookEnabled) return 0;
254 if (RBACheckMediaChange()) {
255 mprintf((0, "Unable to play track due to CD change.\n"));
260 mciPlayParms.dwFrom = CDTrackInfo[start-1].msf; // MCI_MAKE_TMSF(track, 0, 0, 0);
261 mciPlayParms.dwTo = msf_add(CDTrackInfo[end-1].msf, CDTrackInfo[end-1].length);
262 retval = mciSendCommand(CDDeviceID, MCI_PLAY, MCI_FROM | MCI_TO, (DWORD)(LPVOID)&mciPlayParms);
265 mciGetErrorString(retval, MCIErrorMsg, 256);
266 mprintf((1,"RBA MCI:%s.\n", MCIErrorMsg));
267 mprintf((0, "Unable to play CD tracks %d-%d.\n", start,end));
271 Playback_Length = i2f(get_track_time(start,end));
272 Playback_Start_Time = timer_get_fixed_seconds();
274 Playback_first_track = start;
275 Playback_last_track = end;
277 mprintf( (0,"Playing Tracks %d-%d (len: %d secs)\n", start,end,f2i(Playback_Length)) );
288 if (!RedBookEnabled) return;
290 retval = mciSendCommand(CDDeviceID, MCI_STOP,0,NULL);
292 mciGetErrorString(retval, MCIErrorMsg, 256);
293 mprintf((1,"RBA MCI:%s.\n", MCIErrorMsg));
294 mprintf((0, "CD Stop command failed.\n"));
299 void RBASetStereoAudio(RBACHANNELCTL *channels)
305 void RBASetQuadAudio(RBACHANNELCTL *channels)
311 void RBAGetAudioInfo(RBACHANNELCTL *channels)
317 static unsigned rba_paused_head_loc = 0;
322 MCI_GENERIC_PARMS mciGenParms;
326 if (!RedBookEnabled) return;
328 rba_paused_head_loc = RBAGetHeadLoc(&min, &sec, &frame);
330 mciGenParms.dwCallback = GetLibraryWindow();
331 retval = mciSendCommand(CDDeviceID, MCI_PAUSE, MCI_NOTIFY,
332 (DWORD)(LPVOID)&mciGenParms);
334 mprintf((1,"ERROR: Unable to pause CD.\n"));
337 mprintf((0, "Pausing CD...\n"));
338 Playback_Pause_Time = timer_get_fixed_seconds();
347 MCI_PLAY_PARMS mciPlayParms;
349 if (!RedBookEnabled) return 0;
351 if (RBACheckMediaChange()) {
353 return RBA_MEDIA_CHANGED;
356 mciPlayParms.dwFrom = rba_paused_head_loc; // MCI_MAKE_TMSF(track, 0, 0, 0);
357 mciPlayParms.dwTo = msf_add(CDTrackInfo[Playback_last_track-1].msf,
358 CDTrackInfo[Playback_last_track-1].length);
359 retval = mciSendCommand(CDDeviceID, MCI_PLAY, MCI_FROM | MCI_TO, (DWORD)(LPVOID)&mciPlayParms);
362 mprintf((1, "ERROR: Resume CD play failed.\n"));
365 Playback_Start_Time += timer_get_fixed_seconds() - Playback_Pause_Time;
371 void RBASetChannelVolume(int channel, int volume)
375 volume = volume << 8;
378 vol = MAKELONG(0,volume);
379 else if (channel == 1)
380 vol = MAKELONG(volume,0);
382 auxSetVolume(AUXDevice, vol);
386 void RBASetVolume(int volume)
391 wvol = (WORD)(volume) << 8;
393 vol = MAKELONG(wvol, wvol);
394 auxSetVolume(AUXDevice, vol);
398 long RBAGetHeadLoc(int *min, int *sec, int *frame)
400 MCI_STATUS_PARMS mciStatusParms;
403 if (!RedBookEnabled) return 0;
405 if (RBACheckMediaChange())
406 return RBA_MEDIA_CHANGED;
408 mciStatusParms.dwItem = MCI_STATUS_POSITION;
409 retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM, (DWORD)(LPVOID)&mciStatusParms);
412 mprintf((0, "Couldn't get location of CD head.\n"));
415 *min = MCI_MSF_MINUTE(mciStatusParms.dwReturn);
416 *sec = MCI_MSF_SECOND(mciStatusParms.dwReturn);
417 *frame = MCI_MSF_FRAME(mciStatusParms.dwReturn);
419 return mciStatusParms.dwReturn;
426 int delta_time; //in seconds
428 if (!RBAPeekPlayStatus())
431 delta_time = f2i(timer_get_fixed_seconds()-Playback_Start_Time+f1_0/2);
433 for (track=Playback_first_track;track<=Playback_last_track && delta_time>0;track++) {
435 delta_time -= get_track_time(track,track);
441 Assert(track <= Playback_last_track);
447 int RBAPeekPlayStatus()
449 //@@ MCI_STATUS_PARMS mciStatusParms;
452 if (!RedBookEnabled) return 0;
455 if ((timer_get_fixed_seconds()-Playback_Start_Time) > Playback_Length) return 0;
459 //@@ mciStatusParms.dwItem = MCI_STATUS_MODE;
460 //@@ retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM, (DWORD)(LPVOID)&mciStatusParms);
462 //@@ mprintf((0, "Unable to obtain current status of CD.\n"));
465 //@@ if (mciStatusParms.dwReturn == MCI_MODE_PLAY) return 1;
473 if (RedBookEnabled < 1) return 0;
481 mprintf((0, "Enabling Redbook...\n"));
488 mprintf((0, "Disabling Redbook...\n"));
492 int RBAGetNumberOfTracks(void)
494 MCI_STATUS_PARMS mciStatusParms;
497 if (!RedBookEnabled) return 0;
499 if (RBACheckMediaChange())
502 mciStatusParms.dwItem = MCI_STATUS_NUMBER_OF_TRACKS;
503 retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM,
504 (DWORD)(LPVOID)&mciStatusParms);
507 mprintf((0, "Get number of CD tracks failed.\n"));
511 return mciStatusParms.dwReturn;
515 // RB functions: Internal to RBA library -----------------------------
517 int RBACheckMediaChange()
519 if (!RedBookEnabled) return 0;
521 if (CDDiscID != GetCDDiscID() || !CDDiscID) return 1;
526 // Converts Logical Sector Number to Minutes Seconds Frame Format
528 unsigned long lsn_to_msf(unsigned long lsn)
530 unsigned long min,sec,frame;
539 return((min << 16) + (sec << 8) + (frame << 0));
542 // convert minutes seconds frame format to a logical sector number.
544 unsigned long msf_to_lsn(unsigned long msf)
546 unsigned long min,sec,frame;
548 min = (msf >> 16) & 0xFF;
549 sec = (msf >> 8) & 0xFF;
550 frame = (msf >> 0) & 0xFF;
552 return( (min * 60*75) + (sec * 75) + frame - 150 );
555 unsigned long msf_add(unsigned long msf1, unsigned long msf2)
557 uint min1, sec1, frame1;
558 uint min2, sec2, frame2;
560 // we don't take frames into account, which may not be right.
561 min1 = MCI_MSF_MINUTE(msf1);
562 sec1 = MCI_MSF_SECOND(msf1);
563 frame1 = MCI_MSF_FRAME(msf1);
568 if ((sec1 + MCI_MSF_SECOND(msf2)) > 59) {
569 sec2 = (sec1+MCI_MSF_SECOND(msf2)) - 60;
572 else sec2 = sec1 + MCI_MSF_SECOND(msf2);
573 min2 = min1+MCI_MSF_MINUTE(msf2);
576 // logentry("msf_add:(%d:%d)\n", min2, sec2);
578 return MCI_MAKE_MSF(min2, sec2, 0);
582 unsigned long msf_sub(unsigned long msf1, unsigned long msf2)
584 int min1, sec1, frame1;
585 int min2, sec2, frame2;
587 // we don't take frames into account, which may not be right.
588 min1 = MCI_MSF_MINUTE(msf1);
589 sec1 = MCI_MSF_SECOND(msf1);
590 frame1 = MCI_MSF_FRAME(msf1);
595 if ((sec1 - (int)MCI_MSF_SECOND(msf2)) < 0) {
596 sec2 = 60 - ((int)MCI_MSF_SECOND(msf2)-sec1);
597 min1--; // This is a shortcut to min2 = min1-(MSF_MIN(msf2)-1)
599 else sec2 = sec1 - (int)MCI_MSF_SECOND(msf2);
600 min2 = min1-(int)MCI_MSF_MINUTE(msf2);
603 // logentry("msf_sub:(%d:%d)\n", min2, sec2);
605 return MCI_MAKE_MSF(min2, sec2, 0);
609 unsigned long msf_to_sec(unsigned long msf)
611 unsigned long min,sec,frame;
613 min = (msf >> 16) & 0xFF;
614 sec = (msf >> 8) & 0xFF;
615 frame = (msf >> 0) & 0xFF;
617 return (min*60) + sec;
623 MCI_STATUS_PARMS mciStatusParms;
625 unsigned long msflen, tracks, msftrack1;
627 mciStatusParms.dwItem = MCI_STATUS_NUMBER_OF_TRACKS;
628 if (retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM,
629 (DWORD)(LPVOID)&mciStatusParms)) {
630 mprintf((1, "RBA: Get number of CD tracks failed.\n"));
633 tracks = mciStatusParms.dwReturn;
635 mciStatusParms.dwItem = MCI_STATUS_LENGTH;
636 if (retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM,
637 (DWORD)(LPVOID)&mciStatusParms)) {
638 mprintf((1, "RBA: Get media length failed.\n"));
641 msflen = mciStatusParms.dwReturn;
643 mciStatusParms.dwTrack = 1;
644 mciStatusParms.dwItem = MCI_STATUS_POSITION;
645 if (retval = mciSendCommand(CDDeviceID, MCI_STATUS, MCI_STATUS_ITEM | MCI_TRACK, (DWORD)(LPVOID)&mciStatusParms)) {
646 mprintf((1, "Could not retrieve information on track %d.\n", 1));
649 msftrack1 = mciStatusParms.dwReturn;
651 return MakeCDDiscID(tracks, msflen, msftrack1);
655 UINT MakeCDDiscID(int tracks, unsigned long msflen, unsigned long msftrack1)
659 code = (UINT)(msf_to_sec(msftrack1) << 19);
660 code |= (UINT)(msf_to_sec(msflen) << 6);
662 code |= (UINT)(tracks&0xffffffc0);