source: trunk/src/winmm/waveoutdart.cpp@ 9916

Last change on this file since 9916 was 9916, checked in by sandervl, 22 years ago

Improved accuracy of waveIn/OutGetPosition. (use FPU to prevent rounding errors)
File size: 24.7 KB
Line 
1/* $Id: waveoutdart.cpp,v 1.19 2003-03-06 15:42:33 sandervl Exp $ */
2
3/*
4 * Wave playback class (DART)
5 *
6 * Copyright 1998-2001 Sander van Leeuwen (sandervl@xs4all.nl)
7 *
8 *
9 * Project Odin Software License can be found in LICENSE.TXT
10 *
11 * Note:
12 * 2000/11/24 PH MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
13 * TODO: mulaw, alaw & adpcm
14 *
15 */
16
17
18/****************************************************************************
19 * Includes *
20 ****************************************************************************/
21
22
23
24#define INCL_BASE
25#define INCL_OS2MM
26#define INCL_DOSPROCESS
27#include <os2wrap.h> //Odin32 OS/2 api wrappers
28#include <os2mewrap.h> //Odin32 OS/2 MMPM/2 api wrappers
29#include <stdlib.h>
30#include <stddef.h>
31#include <string.h>
32#define OS2_ONLY
33#include <win32api.h>
34#include <wprocess.h>
35
36#include "misc.h"
37#include "waveoutdart.h"
38#include "initwinmm.h"
39
40#define DBG_LOCALLOG DBG_waveoutdart
41#include "dbglocal.h"
42
43#ifndef min
44#define min(a, b) ((a > b) ? b : a)
45#endif
46
47#ifndef max
48#define max(a, b) ((a > b) ? a : b)
49#endif
50
51LONG APIENTRY WaveOutHandler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags);
52
53static BOOL fFixedWaveBufferSize = FALSE;
54
55//******************************************************************************
56// ODIN_waveOutSetFixedBuffers
57//
58// Tell WINMM to use DART buffers of the same size as the first buffer delivered
59// by waveOutWrite
60//
61// NOTE: This will only work in very specific cases; it is not a good general
62// purpose solution.
63//
64//******************************************************************************
65void WIN32API ODIN_waveOutSetFixedBuffers()
66{
67 fFixedWaveBufferSize = TRUE;
68}
69/******************************************************************************/
70/******************************************************************************/
71DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx, ULONG fdwOpen, ULONG nCallback, ULONG dwInstance)
72 : WaveOut(pwfx, fdwOpen, nCallback, dwInstance)
73{
74 MCI_GENERIC_PARMS GenericParms;
75 MCI_AMP_OPEN_PARMS AmpOpenParms;
76 APIRET rc;
77
78 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
79 fMixerSetup = FALSE;
80 fUnderrun = FALSE;
81
82 ulBufSize = DART_BUFSIZE;
83
84 MixBuffer = (MCI_MIX_BUFFER *)malloc(PREFILLBUF_DART*sizeof(MCI_MIX_BUFFER));
85 MixSetupParms = (MCI_MIXSETUP_PARMS *)malloc(sizeof(MCI_MIXSETUP_PARMS));
86 BufferParms = (MCI_BUFFER_PARMS *)malloc(sizeof(MCI_BUFFER_PARMS));
87 if(!MixBuffer || !MixSetupParms || !BufferParms) {
88 dprintf(("ERROR: malloc failed!!"));
89 ulError = MMSYSERR_NOMEM;
90 return;
91 }
92
93 // Setup the open structure, pass the playlist and tell MCI_OPEN to use it
94 memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
95
96 AmpOpenParms.usDeviceID = ( USHORT ) 0;
97 AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
98
99 rc = mymciSendCommand(0, MCI_OPEN, MCI_WAIT | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
100 (PVOID) &AmpOpenParms, 0);
101
102 DeviceId = AmpOpenParms.usDeviceID;
103 if(rc) {
104 dprintf(("MCI_OPEN failed\n"));
105 mciError(rc);
106 ulError = MMSYSERR_NODRIVER;
107 }
108 if(rc == 0) {
109 //Grab exclusive rights to device instance (NOT entire device)
110 GenericParms.hwndCallback = 0; //Not needed, so set to 0
111 rc = mymciSendCommand(DeviceId, MCI_ACQUIREDEVICE, MCI_EXCLUSIVE_INSTANCE,
112 (PVOID)&GenericParms, 0);
113 if(rc) {
114 dprintf(("MCI_ACQUIREDEVICE failed\n"));
115 mciError(rc);
116 ulError = MMSYSERR_NOTENABLED;
117 }
118 }
119 setVolume(volume);
120
121 if(!ulError)
122 callback(WOM_OPEN, 0, 0);
123}
124/******************************************************************************/
125/******************************************************************************/
126DartWaveOut::~DartWaveOut()
127{
128 MCI_GENERIC_PARMS GenericParms;
129
130 State = STATE_STOPPED;
131
132 if(!ulError) {
133 // Generic parameters
134 GenericParms.hwndCallback = 0; //hwndFrame
135
136 // Stop the playback.
137 mymciSendCommand(DeviceId, MCI_STOP,MCI_WAIT, (PVOID)&GenericParms,0);
138
139 mymciSendCommand(DeviceId, MCI_BUFFER,
140 MCI_WAIT | MCI_DEALLOCATE_MEMORY,
141 (PVOID)&BufferParms, 0);
142
143 // Generic parameters
144 GenericParms.hwndCallback = 0; //hwndFrame
145
146 // Close the device
147 mymciSendCommand(DeviceId, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
148 }
149
150 if(!ulError)
151 {
152 callback(WOM_CLOSE, 0, 0);
153 }
154
155 if(MixBuffer)
156 free(MixBuffer);
157 if(MixSetupParms)
158 free(MixSetupParms);
159 if(BufferParms)
160 free(BufferParms);
161}
162/******************************************************************************/
163/******************************************************************************/
164MMRESULT DartWaveOut::write(LPWAVEHDR pwh, UINT cbwh)
165{
166 MCI_GENERIC_PARMS GenericParms = {0};
167 APIRET rc;
168 int i, buflength;
169
170 queuedbuffers++;
171 if(fMixerSetup == FALSE)
172 {
173 dprintf(("device acquired\n"));
174 /* Set the MixSetupParms data structure to match the loaded file.
175 * This is a global that is used to setup the mixer.
176 */
177 memset(MixSetupParms, 0, sizeof( MCI_MIXSETUP_PARMS ) );
178
179 MixSetupParms->ulBitsPerSample = BitsPerSample;
180 MixSetupParms->ulSamplesPerSec = SampleRate;
181 MixSetupParms->ulFormatTag = MCI_WAVE_FORMAT_PCM;
182 MixSetupParms->ulChannels = nChannels;
183
184 dprintf(("bps %d, sps %d chan %d\n", BitsPerSample, SampleRate, nChannels));
185
186 /* Setup the mixer for playback of wave data
187 */
188 MixSetupParms->ulFormatMode = MCI_PLAY;
189 MixSetupParms->ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
190 MixSetupParms->pmixEvent = WaveOutHandler;
191
192 rc = mymciSendCommand(DeviceId,
193 MCI_MIXSETUP,
194 MCI_WAIT | MCI_MIXSETUP_INIT,
195 (PVOID)MixSetupParms,
196 0);
197
198 if ( rc != MCIERR_SUCCESS ) {
199 mciError(rc);
200 mymciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
201 (PVOID)&GenericParms, 0);
202 return(MMSYSERR_NOTSUPPORTED);
203 }
204
205 /*
206 * Set up the BufferParms data structure and allocate
207 * device buffers from the Amp-Mixer
208 */
209 dprintf(("mix setup %d, %d\n", pwh->dwBufferLength, pwh->dwBufferLength));
210
211#if 1
212 if(fFixedWaveBufferSize == FALSE)
213 {//by default we need to select a small enough buffer to be able to
214 //signal buffer completion in time
215 int consumerate = getAvgBytesPerSecond();
216 int minbufsize = consumerate/32;
217
218 ulBufSize = pwh->dwBufferLength/2;
219 if(ulBufSize > minbufsize) {
220 dprintf(("set buffer size to %d bytes (org size = %d)", minbufsize, pwh->dwBufferLength));
221 ulBufSize = minbufsize;
222 }
223 }
224 else ulBufSize = pwh->dwBufferLength;
225#else
226 if(pwh->dwBufferLength >= 512 && pwh->dwBufferLength <= 1024)
227 ulBufSize = pwh->dwBufferLength;
228 else ulBufSize = 1024;
229#endif
230 MixSetupParms->ulBufferSize = ulBufSize;
231
232 BufferParms->ulNumBuffers = PREFILLBUF_DART;
233 BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
234 BufferParms->pBufList = MixBuffer;
235
236 for(i=0;i<PREFILLBUF_DART;i++) {
237 MixBuffer[i].ulUserParm = (ULONG)this;
238 }
239
240 rc = mymciSendCommand(DeviceId,
241 MCI_BUFFER,
242 MCI_WAIT | MCI_ALLOCATE_MEMORY,
243 (PVOID)BufferParms,
244 0);
245
246 if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
247 mciError(rc);
248 mymciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
249 (PVOID)&GenericParms, 0);
250 return(MMSYSERR_NOTSUPPORTED);
251 }
252
253 wmutex.enter();
254 fMixerSetup = TRUE;
255
256 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
257 bytesPlayed = bytesCopied = bytesReturned = 0;
258
259 for(i=0;i<PREFILLBUF_DART;i++) {
260 memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
261 }
262 dprintf(("Dart opened, bufsize = %d\n", MixBuffer[0].ulBufferLength));
263
264 wavehdr = pwh;
265 curhdr = pwh;
266 pwh->lpNext = NULL;
267 pwh->reserved = 0;
268
269 if(State != STATE_STOPPED) {//don't start playback if paused
270 wmutex.leave();
271 return(MMSYSERR_NOERROR);
272 }
273
274 writeBuffer(); //must be called before (re)starting playback
275
276 dprintf(("MixSetupParms = %X\n", MixSetupParms));
277 State = STATE_PLAYING;
278 fUnderrun = FALSE;
279 wmutex.leave();
280
281 //write buffers to DART; starts playback
282 dprintf(("WINMM: transfer all buffers to DART"));
283 USHORT selTIB = RestoreOS2FS(); // save current FS selector
284
285 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
286 MixBuffer,
287 PREFILLBUF_DART);
288 SetFS(selTIB); // switch back to the saved FS selector
289 dprintf(("Dart playing\n"));
290 }
291 else
292 {
293 pwh->lpNext = NULL;
294 pwh->reserved = 0;
295 wmutex.enter();
296 if(wavehdr) {
297 WAVEHDR *chdr = wavehdr;
298 while(chdr->lpNext) {
299#ifdef DEBUG
300 if(chdr == pwh) dprintf(("adding already present buffer!!!!!"));
301#endif
302 chdr = chdr->lpNext;
303 }
304 chdr->lpNext = pwh;
305 }
306 else wavehdr = pwh;
307
308 if(!fUnderrun && State != STATE_STOPPED) {//don't start playback if paused
309 //write new data to the DART buffers (if there's any room left)
310 if(State == STATE_PLAYING) {
311 writeBuffer(); //must be called before (re)starting playback
312 }
313 wmutex.leave();
314 return(MMSYSERR_NOERROR);
315 }
316 writeBuffer(); //must be called before (re)starting playback
317 State = STATE_PLAYING;
318 fUnderrun = FALSE;
319 wmutex.leave();
320
321 //write buffers to DART; starts playback
322 dprintf(("WINMM: transfer all buffers to DART"));
323 USHORT selTIB = RestoreOS2FS(); // save current FS selector
324
325 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
326 MixBuffer,
327 PREFILLBUF_DART);
328 SetFS(selTIB); // switch back to the saved FS selector
329
330 dprintf(("Dart playing\n"));
331 }
332 return(MMSYSERR_NOERROR);
333}
334/******************************************************************************/
335/******************************************************************************/
336MMRESULT DartWaveOut::pause()
337{
338 MCI_GENERIC_PARMS Params;
339
340 dprintf(("WINMM: DartWaveOut::pause"));
341
342 wmutex.enter();
343 if(State != STATE_PLAYING) {
344 State = STATE_PAUSED;
345 wmutex.leave();
346 return(MMSYSERR_NOERROR);
347 }
348
349 State = STATE_PAUSED;
350 wmutex.leave();
351
352 memset(&Params, 0, sizeof(Params));
353
354 // Pause playback.
355 mymciSendCommand(DeviceId, MCI_PAUSE, MCI_WAIT, (PVOID)&Params, 0);
356
357 return(MMSYSERR_NOERROR);
358}
359/******************************************************************************/
360/******************************************************************************/
361MMRESULT DartWaveOut::resume()
362{
363 MCI_GENERIC_PARMS Params;
364 int i, curbuf;
365
366 dprintf(("DartWaveOut::resume"));
367
368 wmutex.enter();
369 if(State != STATE_PAUSED) {
370 wmutex.leave();
371 return(MMSYSERR_NOERROR);
372 }
373 State = STATE_PLAYING;
374 wmutex.leave();
375
376 //Only write buffers to dart if mixer has been initialized; if not, then
377 //the first buffer write will do this for us.
378 if(fMixerSetup == TRUE)
379 {
380 wmutex.enter();
381 State = STATE_PLAYING;
382 fUnderrun = FALSE;
383 curbuf = curPlayBuf;
384 writeBuffer(); //must be called before (re)starting playback
385 wmutex.leave();
386
387 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
388 USHORT selTIB = GetFS(); // save current FS selector
389
390 for(i=0;i<PREFILLBUF_DART;i++)
391 {
392 dprintf(("restart: write buffer at %x size %d", MixBuffer[curbuf].pBuffer, MixBuffer[curbuf].ulBufferLength));
393 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curbuf], 1);
394 if(++curbuf == PREFILLBUF_DART)
395 curbuf = 0;
396 }
397 SetFS(selTIB); // switch back to the saved FS selector
398 }
399 return(MMSYSERR_NOERROR);
400}
401/******************************************************************************/
402/******************************************************************************/
403MMRESULT DartWaveOut::stop()
404{
405 MCI_GENERIC_PARMS Params;
406
407 dprintf(("DartWaveOut::stop %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
408 if(State != STATE_PLAYING)
409 return(MMSYSERR_HANDLEBUSY);
410
411 memset(&Params, 0, sizeof(Params));
412
413 // Stop the playback.
414 mymciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
415
416 State = STATE_STOPPED;
417 fUnderrun = FALSE;
418
419 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
420 bytesPlayed = bytesCopied = bytesReturned = 0;
421
422 return(MMSYSERR_NOERROR);
423}
424/******************************************************************************/
425/******************************************************************************/
426MMRESULT DartWaveOut::reset()
427{
428 MCI_GENERIC_PARMS Params;
429 LPWAVEHDR tmpwavehdr;
430
431 dprintf(("DartWaveOut::reset %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
432 if(State != STATE_PLAYING)
433 return(MMSYSERR_HANDLEBUSY);
434
435 memset(&Params, 0, sizeof(Params));
436
437 wmutex.enter();
438 State = STATE_STOPPED;
439 wmutex.leave();
440
441 // Stop the playback.
442 mymciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
443
444 wmutex.enter();
445 while(wavehdr)
446 {
447 wavehdr->dwFlags |= WHDR_DONE;
448 wavehdr->dwFlags &= ~WHDR_INQUEUE;
449 wavehdr->reserved = 0;
450 tmpwavehdr = wavehdr;
451 wavehdr = wavehdr->lpNext;
452 tmpwavehdr->lpNext = NULL;
453 wmutex.leave();
454
455 callback(WOM_DONE, (ULONG)tmpwavehdr, 0);
456 wmutex.enter();
457 }
458 wavehdr = NULL;
459 fUnderrun = FALSE;
460
461 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
462 bytesPlayed = bytesCopied = bytesReturned = 0;
463 queuedbuffers = 0;
464
465 wmutex.leave();
466 return(MMSYSERR_NOERROR);
467}
468/******************************************************************************/
469/******************************************************************************/
470ULONG DartWaveOut::getPosition()
471{
472 MCI_STATUS_PARMS mciStatus = {0};
473 ULONG rc, nrbytes;
474
475 if(State == STATE_STOPPED) {
476 dprintf(("Not playing; return 0 position"));
477 return 0;
478 }
479
480 mciStatus.ulItem = MCI_STATUS_POSITION;
481 rc = mymciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM|MCI_WAIT, (PVOID)&mciStatus, 0);
482 if((rc & 0xFFFF) == MCIERR_SUCCESS) {
483 nrbytes = (ULONG)((double)mciStatus.ulReturn * ((double)getAvgBytesPerSecond()/1000.0));
484 return nrbytes;;
485 }
486 mciError(rc);
487 return 0xFFFFFFFF;
488}
489/******************************************************************************/
490/******************************************************************************/
491BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
492 ULONG nSamplesPerSec, ULONG wBitsPerSample)
493{
494 MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
495 MCI_GENERIC_PARMS GenericParms;
496 MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
497 int i, freqbits = 0;
498 ULONG rc, DeviceId;
499 BOOL winrc;
500
501 dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
502
503 memset(&mciOpenParms, /* Object to fill with zeros. */
504 0, /* Value to place into the object. */
505 sizeof( mciOpenParms ) ); /* How many zero's to use. */
506
507 mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
508
509 rc = mymciSendCommand( (USHORT) 0,
510 MCI_OPEN,
511 MCI_WAIT | MCI_OPEN_TYPE_ID,
512 (PVOID) &mciOpenParms,
513 0);
514 if((rc & 0xFFFF) != MCIERR_SUCCESS) {
515 mciError(rc);
516 return(FALSE);
517 }
518 DeviceId = mciOpenParms.usDeviceID;
519
520 memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
521
522 mciAudioCaps.ulBitsPerSample = wBitsPerSample;
523 mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
524 mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
525 mciAudioCaps.ulChannels = nChannels;
526 mciAudioCaps.ulFormatMode = MCI_PLAY;
527 mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
528
529 rc = mymciSendCommand(DeviceId, /* Device ID */
530 MCI_GETDEVCAPS,
531 MCI_WAIT | MCI_GETDEVCAPS_EXTENDED | MCI_GETDEVCAPS_ITEM,
532 (PVOID) &mciAudioCaps,
533 0);
534 if((rc & 0xFFFF) != MCIERR_SUCCESS) {
535 mciError(rc);
536 winrc = FALSE;
537 }
538 else winrc = TRUE;
539
540 // Close the device
541 mymciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
542 return(winrc);
543}
544/******************************************************************************/
545/******************************************************************************/
546void DartWaveOut::mciError(ULONG ulError)
547{
548#ifdef DEBUG
549 char szError[256] = "";
550
551 mymciGetErrorString(ulError, szError, sizeof(szError));
552 dprintf(("WINMM: DartWaveOut: %s\n", szError));
553#endif
554}
555//******************************************************************************
556//******************************************************************************
557void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
558{
559 ULONG buflength;
560 WAVEHDR *whdr, *prevhdr = NULL;
561
562 dprintf2(("WINMM: handler %d; buffers left %d", curPlayBuf, queuedbuffers));
563 if(ulFlags == MIX_STREAM_ERROR) {
564 if(ulStatus == ERROR_DEVICE_UNDERRUN) {
565 dprintf(("WINMM: WaveOut handler UNDERRUN! state %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
566 if(State == STATE_PLAYING) {
567 fUnderrun = TRUE;
568 stop(); //out of buffers, so stop playback
569 }
570 return;
571 }
572 dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
573 return;
574 }
575 if(State != STATE_PLAYING) {
576 return;
577 }
578
579 wmutex.enter();
580
581 bytesPlayed += MixBuffer[curPlayBuf].ulBufferLength;
582
583 //update our buffer index
584 if(curPlayBuf == PREFILLBUF_DART-1)
585 curPlayBuf = 0;
586 else curPlayBuf++;
587
588 fUnderrun = FALSE;
589
590 whdr = wavehdr;
591 while(whdr) {
592 if(whdr->reserved == WHDR_DONE)
593 {
594 if(bytesPlayed < bytesReturned + whdr->dwBufferLength) {
595 dprintf2(("Buffer marked done, but not yet played completely (play %d/%d, cop %d, ret %d)", bytesPlayed, getPosition(), bytesCopied, bytesReturned));
596 break; //not yet done
597 }
598
599 dprintf2(("WINMM: handler buf %X done (play %d/%d, cop %d, ret %d)", whdr, bytesPlayed, getPosition(), bytesCopied, bytesReturned));
600 queuedbuffers--;
601
602 whdr->dwFlags &= ~WHDR_INQUEUE;
603 whdr->dwFlags |= WHDR_DONE;
604 whdr->reserved = 0;
605
606 if(prevhdr == NULL)
607 wavehdr = whdr->lpNext;
608 else prevhdr->lpNext = whdr->lpNext;
609
610 whdr->lpNext = NULL;
611
612 bytesReturned += whdr->dwBufferLength;
613 wmutex.leave();
614
615 callback(WOM_DONE, (ULONG)whdr, 0);
616
617 wmutex.enter();
618 }
619 else break;
620
621 prevhdr = whdr;
622 whdr = whdr->lpNext;
623 }
624
625 if(wavehdr == NULL) {
626 //last buffer played -> no new ones -> return now
627 dprintf(("WINMM: WaveOut handler LAST BUFFER PLAYED! state %s (play %d (%d), cop %d, ret %d)", (State == STATE_PLAYING) ? "playing" : "stopped", bytesPlayed, getPosition(), bytesCopied, bytesReturned));
628 wmutex.leave();
629 return;
630 }
631
632 writeBuffer();
633
634sendbuffer:
635 wmutex.leave();
636
637 //Transfer the buffer we just finished playing to DART
638 dprintf2(("WINMM: handler transfer buffer %d", pBuffer - MixBuffer));
639 USHORT selTIB = RestoreOS2FS(); // save current FS selector
640 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, pBuffer, 1);
641 SetFS(selTIB); // switch back to the saved FS selector
642
643 dprintf2(("WINMM: handler DONE"));
644}
645/******************************************************************************/
646/******************************************************************************/
647void DartWaveOut::writeBuffer()
648{
649 ULONG buflength;
650
651 if(!fUnderrun && State == STATE_PLAYING && curFillBuf == curPlayBuf) {
652 dprintf2(("writeBuffer: no more room for more audio data"));
653 return; //no room left
654 }
655
656 if(curhdr == NULL)
657 curhdr = wavehdr;
658
659 while(curhdr && (curhdr->reserved == WHDR_DONE)) {
660 curhdr = curhdr->lpNext;
661 }
662
663 if(curhdr == NULL) {
664 return; //no unprocessed buffers left
665 }
666
667 dprintf2(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
668
669 while(curhdr) {
670 buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
671 (ULONG)curhdr->dwBufferLength - curFillPos);
672 dprintf2(("WINMM: copied %d bytes, cufFillPos = %d, curPlayPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curPlayPos, curhdr->dwBufferLength));
673
674 memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
675 curhdr->lpData + curFillPos, buflength);
676 curPlayPos += buflength;
677 curFillPos += buflength;
678 bytesCopied += buflength;
679
680 if(curFillPos == curhdr->dwBufferLength) {
681 dprintf2(("Buffer %d done ptr %x size %d %x %x %x %x %x %x", curFillBuf, curhdr->lpData, curhdr->dwBufferLength, curhdr->dwBytesRecorded, curhdr->dwUser, curhdr->dwFlags, curhdr->dwLoops, curhdr->lpNext, curhdr->reserved));
682
683 curFillPos = 0;
684 curhdr->reserved = WHDR_DONE;
685 //search for next unprocessed buffer
686 while(curhdr && (curhdr->reserved == WHDR_DONE))
687 curhdr = curhdr->lpNext;
688 }
689 if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
690 curPlayPos = 0;
691
692 if(++curFillBuf == PREFILLBUF_DART) {
693 curFillBuf = 0;
694 }
695 if(curFillBuf == curPlayBuf)
696 break; //no more room left
697 }
698 }
699}
700/******************************************************************************/
701/******************************************************************************/
702LONG APIENTRY WaveOutHandler(ULONG ulStatus,
703 PMCI_MIX_BUFFER pBuffer,
704 ULONG ulFlags)
705{
706 PTIB2 ptib2;
707 DartWaveOut *dwave;
708
709 dprintf2(("WaveOutHandler %x %x %x", ulStatus, pBuffer, ulFlags));
710
711 ptib2 = (PTIB2)_getTIBvalue(offsetof(TIB, tib_ptib2));
712 if(ptib2 && HIBYTE(ptib2->tib2_ulpri) != PRTYC_TIMECRITICAL) {
713 dprintf(("Setting priority of DART thread to PRTYC_TIMECRITICAL"));
714 DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0);
715 }
716 if(pBuffer && pBuffer->ulUserParm)
717 {
718 dwave = (DartWaveOut *)pBuffer->ulUserParm;
719 dwave->handler(ulStatus, pBuffer, ulFlags);
720 }
721 return(TRUE);
722}
723
724/******************************************************************************/
725/******************************************************************************/
726MMRESULT DartWaveOut::setVolume(ULONG ulVol)
727{
728 ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
729 ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
730 MCI_SET_PARMS msp = {0};
731
732 dprintf(("DartWaveOut::setVolume %d %d", ulVolL, ulVolR));
733 volume = ulVol;
734
735// PD: My card (ESS 1868 PnP) driver can't change only
736// one channel Left or Right :-(
737//
738#ifdef GOOD_AUDIO_CARD_DRIVER
739
740 msp.ulAudio = MCI_SET_AUDIO_LEFT;
741 msp.ulLevel = ulVolL;
742
743 mymciSendCommand(DeviceId, MCI_SET,
744 MCI_WAIT | MCI_SET_AUDIO | MCI_SET_VOLUME,
745 &msp, 0);
746
747 msp.ulAudio = MCI_SET_AUDIO_RIGHT;
748 msp.ulLevel = ulVolR;
749
750#else
751 msp.ulAudio = MCI_SET_AUDIO_ALL;
752 msp.ulLevel = max(ulVolR,ulVolL);
753#endif
754
755 mymciSendCommand(DeviceId, MCI_SET,
756 MCI_WAIT | MCI_SET_AUDIO | MCI_SET_VOLUME,
757 &msp, 0);
758 return 0;
759}
760/******************************************************************************/
761/******************************************************************************/
762
Note: See TracBrowser for help on using the repository browser.