source: trunk/src/winmm/waveoutdart.cpp@ 5472

Last change on this file since 5472 was 5472, checked in by sandervl, 24 years ago

compile fix
File size: 23.7 KB
Line 
1/* $Id: waveoutdart.cpp,v 1.3 2001-04-04 09:02:16 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 *
14 */
15
16
17/****************************************************************************
18 * Includes *
19 ****************************************************************************/
20
21
22
23#define INCL_BASE
24#define INCL_OS2MM
25#define INCL_DOSPROCESS
26#include <os2wrap.h> //Odin32 OS/2 api wrappers
27#include <os2mewrap.h> //Odin32 OS/2 MMPM/2 api wrappers
28#include <stdlib.h>
29#include <stddef.h>
30#include <string.h>
31#define OS2_ONLY
32#include <win32api.h>
33#include <wprocess.h>
34
35#include "misc.h"
36#include "waveoutdart.h"
37
38#define DBG_LOCALLOG DBG_waveoutdart
39#include "dbglocal.h"
40
41#ifndef min
42#define min(a, b) ((a > b) ? b : a)
43#endif
44
45#ifndef max
46#define max(a, b) ((a > b) ? a : b)
47#endif
48
49LONG APIENTRY WaveOutHandler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags);
50
51//TODO: mulaw, alaw & adpcm
52/******************************************************************************/
53/******************************************************************************/
54DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx, ULONG fdwOpen, ULONG nCallback, ULONG dwInstance)
55 : WaveOut(pwfx, fdwOpen, nCallback, dwInstance)
56{
57 MCI_GENERIC_PARMS GenericParms;
58 MCI_AMP_OPEN_PARMS AmpOpenParms;
59 APIRET rc;
60
61 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
62 fMixerSetup = FALSE;
63 fUnderrun = FALSE;
64
65 ulBufSize = DART_BUFSIZE;
66
67 MixBuffer = (MCI_MIX_BUFFER *)malloc(PREFILLBUF_DART*sizeof(MCI_MIX_BUFFER));
68 MixSetupParms = (MCI_MIXSETUP_PARMS *)malloc(sizeof(MCI_MIXSETUP_PARMS));
69 BufferParms = (MCI_BUFFER_PARMS *)malloc(sizeof(MCI_BUFFER_PARMS));
70 if(!MixBuffer || !MixSetupParms || !BufferParms) {
71 dprintf(("ERROR: malloc failed!!"));
72 ulError = MMSYSERR_NOMEM;
73 return;
74 }
75
76 // Setup the open structure, pass the playlist and tell MCI_OPEN to use it
77 memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
78
79 AmpOpenParms.usDeviceID = ( USHORT ) 0;
80 AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
81
82 rc = mciSendCommand(0, MCI_OPEN, MCI_WAIT | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
83 (PVOID) &AmpOpenParms, 0);
84
85 DeviceId = AmpOpenParms.usDeviceID;
86 if(rc) {
87 dprintf(("MCI_OPEN failed\n"));
88 mciError(rc);
89 ulError = MMSYSERR_NODRIVER;
90 }
91 if(rc == 0) {
92 //Grab exclusive rights to device instance (NOT entire device)
93 GenericParms.hwndCallback = 0; //Not needed, so set to 0
94 rc = mciSendCommand(DeviceId, MCI_ACQUIREDEVICE, MCI_EXCLUSIVE_INSTANCE,
95 (PVOID)&GenericParms, 0);
96 if(rc) {
97 dprintf(("MCI_ACQUIREDEVICE failed\n"));
98 mciError(rc);
99 ulError = MMSYSERR_NOTENABLED;
100 }
101 }
102 setVolume(volume);
103
104 if(!ulError)
105 callback(WOM_OPEN, 0, 0);
106}
107/******************************************************************************/
108/******************************************************************************/
109DartWaveOut::~DartWaveOut()
110{
111 MCI_GENERIC_PARMS GenericParms;
112
113 State = STATE_STOPPED;
114
115 if(!ulError) {
116 // Generic parameters
117 GenericParms.hwndCallback = 0; //hwndFrame
118
119 // Stop the playback.
120 mciSendCommand(DeviceId, MCI_STOP,MCI_WAIT, (PVOID)&GenericParms,0);
121
122 mciSendCommand(DeviceId, MCI_BUFFER,
123 MCI_WAIT | MCI_DEALLOCATE_MEMORY,
124 (PVOID)&BufferParms, 0);
125
126 // Generic parameters
127 GenericParms.hwndCallback = 0; //hwndFrame
128
129 // Close the device
130 mciSendCommand(DeviceId, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
131 }
132
133 if(!ulError)
134 {
135 callback(WOM_CLOSE, 0, 0);
136 }
137
138 if(MixBuffer)
139 free(MixBuffer);
140 if(MixSetupParms)
141 free(MixSetupParms);
142 if(BufferParms)
143 free(BufferParms);
144}
145/******************************************************************************/
146/******************************************************************************/
147MMRESULT DartWaveOut::write(LPWAVEHDR pwh, UINT cbwh)
148{
149 MCI_GENERIC_PARMS GenericParms = {0};
150 APIRET rc;
151 int i, buflength;
152
153 queuedbuffers++;
154 if(fMixerSetup == FALSE)
155 {
156 dprintf(("device acquired\n"));
157 /* Set the MixSetupParms data structure to match the loaded file.
158 * This is a global that is used to setup the mixer.
159 */
160 memset(MixSetupParms, 0, sizeof( MCI_MIXSETUP_PARMS ) );
161
162 MixSetupParms->ulBitsPerSample = BitsPerSample;
163 MixSetupParms->ulSamplesPerSec = SampleRate;
164 MixSetupParms->ulFormatTag = MCI_WAVE_FORMAT_PCM;
165 MixSetupParms->ulChannels = nChannels;
166
167 dprintf(("bps %d, sps %d chan %d\n", BitsPerSample, SampleRate, nChannels));
168
169 /* Setup the mixer for playback of wave data
170 */
171 MixSetupParms->ulFormatMode = MCI_PLAY;
172 MixSetupParms->ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
173 MixSetupParms->pmixEvent = WaveOutHandler;
174
175 rc = mciSendCommand(DeviceId,
176 MCI_MIXSETUP,
177 MCI_WAIT | MCI_MIXSETUP_INIT,
178 (PVOID)MixSetupParms,
179 0);
180
181 if ( rc != MCIERR_SUCCESS ) {
182 mciError(rc);
183 mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
184 (PVOID)&GenericParms, 0);
185 return(MMSYSERR_NOTSUPPORTED);
186 }
187
188 /*
189 * Set up the BufferParms data structure and allocate
190 * device buffers from the Amp-Mixer
191 */
192 dprintf(("mix setup %d, %d\n", pwh->dwBufferLength, pwh->dwBufferLength));
193
194#if 1
195 int consumerate = getAvgBytesPerSecond();
196 int minbufsize = consumerate/32;
197
198 ulBufSize = pwh->dwBufferLength/2;
199 if(ulBufSize > minbufsize) {
200 dprintf(("set buffer size to %d bytes (org size = %d)", minbufsize, pwh->dwBufferLength));
201 ulBufSize = minbufsize;
202 }
203#else
204 if(pwh->dwBufferLength >= 512 && pwh->dwBufferLength <= 1024)
205 ulBufSize = pwh->dwBufferLength;
206 else ulBufSize = 1024;
207#endif
208
209 MixSetupParms->ulBufferSize = ulBufSize;
210
211 BufferParms->ulNumBuffers = PREFILLBUF_DART;
212 BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
213 BufferParms->pBufList = MixBuffer;
214
215 for(i=0;i<PREFILLBUF_DART;i++) {
216 MixBuffer[i].ulUserParm = (ULONG)this;
217 }
218
219 rc = mciSendCommand(DeviceId,
220 MCI_BUFFER,
221 MCI_WAIT | MCI_ALLOCATE_MEMORY,
222 (PVOID)BufferParms,
223 0);
224
225 if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
226 mciError(rc);
227 mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
228 (PVOID)&GenericParms, 0);
229 return(MMSYSERR_NOTSUPPORTED);
230 }
231
232 wmutex.enter(VMUTEX_WAIT_FOREVER);
233 fMixerSetup = TRUE;
234
235 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
236 bytesPlayed = bytesCopied = bytesReturned = 0;
237
238 for(i=0;i<PREFILLBUF_DART;i++) {
239 memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
240 }
241 dprintf(("Dart opened, bufsize = %d\n", MixBuffer[0].ulBufferLength));
242
243 wavehdr = pwh;
244 curhdr = pwh;
245 pwh->lpNext = NULL;
246 pwh->reserved = 0;
247
248 if(State != STATE_STOPPED) {//don't start playback if paused
249 wmutex.leave();
250 return(MMSYSERR_NOERROR);
251 }
252
253 writeBuffer(); //must be called before (re)starting playback
254
255 dprintf(("MixSetupParms = %X\n", MixSetupParms));
256 State = STATE_PLAYING;
257 fUnderrun = FALSE;
258 wmutex.leave();
259
260 //write buffers to DART; starts playback
261 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
262 USHORT selTIB = GetFS(); // save current FS selector
263
264 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
265 MixBuffer,
266 PREFILLBUF_DART);
267 SetFS(selTIB); // switch back to the saved FS selector
268
269 dprintf(("Dart playing\n"));
270 }
271 else
272 {
273 pwh->lpNext = NULL;
274 pwh->reserved = 0;
275 wmutex.enter(VMUTEX_WAIT_FOREVER);
276 if(wavehdr) {
277 WAVEHDR *chdr = wavehdr;
278 while(chdr->lpNext) {
279 chdr = chdr->lpNext;
280 }
281 chdr->lpNext = pwh;
282 }
283 else wavehdr = pwh;
284
285 writeBuffer(); //must be called before (re)starting playback
286 wmutex.leave();
287
288 if(State == STATE_STOPPED) {//continue playback
289 restart();
290 }
291 else
292 if(fUnderrun) {
293 dprintf(("Resume playback after underrun"));
294 fUnderrun = FALSE;
295 State = STATE_PLAYING;
296
297 memset(&GenericParms, 0, sizeof(GenericParms));
298
299 // Resume the playback.
300 mciSendCommand(DeviceId, MCI_RESUME, MCI_WAIT, (PVOID)&GenericParms, 0);
301
302 //write buffers to DART; starts playback
303 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
304 USHORT selTIB = GetFS(); // save current FS selector
305
306 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
307
308 SetFS(selTIB); // switch back to the saved FS selector
309 }
310 }
311 return(MMSYSERR_NOERROR);
312}
313/******************************************************************************/
314/******************************************************************************/
315MMRESULT DartWaveOut::pause()
316{
317 MCI_GENERIC_PARMS Params;
318
319 dprintf(("WINMM: DartWaveOut::pause"));
320
321 wmutex.enter(VMUTEX_WAIT_FOREVER);
322 if(State != STATE_PLAYING) {
323 State = STATE_PAUSED;
324 wmutex.leave();
325 return(MMSYSERR_NOERROR);
326 }
327
328 State = STATE_PAUSED;
329 wmutex.leave();
330
331 memset(&Params, 0, sizeof(Params));
332
333 // Pause the playback.
334 mciSendCommand(DeviceId, MCI_PAUSE, MCI_WAIT, (PVOID)&Params, 0);
335
336 return(MMSYSERR_NOERROR);
337}
338/******************************************************************************/
339/******************************************************************************/
340MMRESULT DartWaveOut::stop()
341{
342 MCI_GENERIC_PARMS Params;
343
344 dprintf(("DartWaveOut::stop %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
345 if(State != STATE_PLAYING)
346 return(MMSYSERR_HANDLEBUSY);
347
348 memset(&Params, 0, sizeof(Params));
349
350 // Stop the playback.
351 mciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
352
353 State = STATE_STOPPED;
354 fUnderrun = FALSE;
355
356 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
357 bytesPlayed = bytesCopied = bytesReturned = 0;
358
359 return(MMSYSERR_NOERROR);
360}
361/******************************************************************************/
362/******************************************************************************/
363MMRESULT DartWaveOut::reset()
364{
365 MCI_GENERIC_PARMS Params;
366 LPWAVEHDR tmpwavehdr;
367
368 dprintf(("DartWaveOut::reset %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
369 if(State != STATE_PLAYING)
370 return(MMSYSERR_HANDLEBUSY);
371
372 memset(&Params, 0, sizeof(Params));
373
374 // Stop the playback.
375 mciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
376
377 dprintf(("Nr of threads blocked on mutex = %d\n", wmutex.getNrBlocked()));
378
379 wmutex.enter(VMUTEX_WAIT_FOREVER);
380 while(wavehdr)
381 {
382 wavehdr->dwFlags |= WHDR_DONE;
383 wavehdr->dwFlags &= ~WHDR_INQUEUE;
384 wavehdr->reserved = 0;
385 tmpwavehdr = wavehdr;
386 wavehdr = wavehdr->lpNext;
387 tmpwavehdr->lpNext = NULL;
388 wmutex.leave();
389
390 callback(WOM_DONE, (ULONG)tmpwavehdr, 0);
391 wmutex.enter(VMUTEX_WAIT_FOREVER);
392 }
393 wavehdr = NULL;
394 State = STATE_STOPPED;
395 fUnderrun = FALSE;
396
397 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
398 bytesPlayed = bytesCopied = bytesReturned = 0;
399 queuedbuffers = 0;
400
401 wmutex.leave();
402 return(MMSYSERR_NOERROR);
403}
404/******************************************************************************/
405/******************************************************************************/
406MMRESULT DartWaveOut::restart()
407{
408 int i, curbuf;
409
410 dprintf(("DartWaveOut::restart"));
411 if(State == STATE_PLAYING)
412 return(MMSYSERR_NOERROR);
413
414 //Only write buffers to dart if mixer has been initialized; if not, then
415 //the first buffer write will do this for us.
416 if(fMixerSetup == TRUE)
417 {
418 wmutex.enter(VMUTEX_WAIT_FOREVER);
419 State = STATE_PLAYING;
420 fUnderrun = FALSE;
421 wmutex.leave();
422 curbuf = curPlayBuf;
423
424 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
425 USHORT selTIB = GetFS(); // save current FS selector
426
427 for(i=0;i<PREFILLBUF_DART;i++)
428 {
429 dprintf(("restart: write buffer at %x size %d", MixBuffer[curbuf].pBuffer, MixBuffer[curbuf].ulBufferLength));
430 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curbuf], 1);
431 if(++curbuf == PREFILLBUF_DART)
432 curbuf = 0;
433 }
434 SetFS(selTIB); // switch back to the saved FS selector
435 }
436
437 return(MMSYSERR_NOERROR);
438}
439/******************************************************************************/
440/******************************************************************************/
441ULONG DartWaveOut::getPosition()
442{
443 MCI_STATUS_PARMS mciStatus = {0};
444 ULONG rc, nrbytes;
445
446 mciStatus.ulItem = MCI_STATUS_POSITION;
447 rc = mciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM|MCI_WAIT, (PVOID)&mciStatus, 0);
448 if((rc & 0xFFFF) == MCIERR_SUCCESS) {
449 nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
450 return nrbytes;;
451 }
452 mciError(rc);
453 return 0xFFFFFFFF;
454}
455/******************************************************************************/
456/******************************************************************************/
457BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
458 ULONG nSamplesPerSec, ULONG wBitsPerSample)
459{
460 MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
461 MCI_GENERIC_PARMS GenericParms;
462 MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
463 int i, freqbits = 0;
464 ULONG rc, DeviceId;
465 BOOL winrc;
466
467 dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
468
469 memset(&mciOpenParms, /* Object to fill with zeros. */
470 0, /* Value to place into the object. */
471 sizeof( mciOpenParms ) ); /* How many zero's to use. */
472
473 mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
474
475 rc = mciSendCommand( (USHORT) 0,
476 MCI_OPEN,
477 MCI_WAIT | MCI_OPEN_TYPE_ID,
478 (PVOID) &mciOpenParms,
479 0);
480 if((rc & 0xFFFF) != MCIERR_SUCCESS) {
481 mciError(rc);
482 return(FALSE);
483 }
484 DeviceId = mciOpenParms.usDeviceID;
485
486 memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
487
488 mciAudioCaps.ulBitsPerSample = wBitsPerSample;
489 mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
490 mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
491 mciAudioCaps.ulChannels = nChannels;
492 mciAudioCaps.ulFormatMode = MCI_PLAY;
493 mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
494
495 rc = mciSendCommand(DeviceId, /* Device ID */
496 MCI_GETDEVCAPS,
497 MCI_WAIT | MCI_GETDEVCAPS_EXTENDED | MCI_GETDEVCAPS_ITEM,
498 (PVOID) &mciAudioCaps,
499 0);
500 if((rc & 0xFFFF) != MCIERR_SUCCESS) {
501 mciError(rc);
502 winrc = FALSE;
503 }
504 else winrc = TRUE;
505
506 // Close the device
507 mciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
508 return(winrc);
509}
510/******************************************************************************/
511/******************************************************************************/
512void DartWaveOut::mciError(ULONG ulError)
513{
514#ifdef DEBUG
515 char szError[256] = "";
516
517 mciGetErrorString(ulError, szError, sizeof(szError));
518 dprintf(("WINMM: DartWaveOut: %s\n", szError));
519#endif
520}
521//******************************************************************************
522//******************************************************************************
523void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
524{
525 ULONG buflength;
526 WAVEHDR *whdr, *prevhdr = NULL;
527
528 dprintf2(("WINMM: handler %d; buffers left %d", curPlayBuf, queuedbuffers));
529 if(ulFlags == MIX_STREAM_ERROR) {
530 if(ulStatus == ERROR_DEVICE_UNDERRUN) {
531 dprintf(("WINMM: WaveOut handler UNDERRUN! state %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
532 if(State == STATE_PLAYING) {
533 fUnderrun = TRUE;
534 stop(); //out of buffers, so stop playback
535 }
536 return;
537 }
538 dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
539 return;
540 }
541 if(State != STATE_PLAYING) {
542 return;
543 }
544
545 wmutex.enter(VMUTEX_WAIT_FOREVER);
546
547 bytesPlayed += MixBuffer[curPlayBuf].ulBufferLength;
548
549 if(curPlayBuf == PREFILLBUF_DART-1)
550 curPlayBuf = 0;
551 else curPlayBuf++;
552
553 fUnderrun = FALSE;
554
555 whdr = wavehdr;
556 while(whdr) {
557 if(whdr->reserved == WHDR_DONE)
558 {
559 if(bytesPlayed < bytesReturned + whdr->dwBufferLength) {
560 dprintf2(("Buffer marked done, but not yet played completely (play %d/%d, cop %d, ret %d)", bytesPlayed, getPosition(), bytesCopied, bytesReturned));
561 break; //not yet done
562 }
563
564 dprintf2(("WINMM: handler buf %X done (play %d/%d, cop %d, ret %d)", whdr, bytesPlayed, getPosition(), bytesCopied, bytesReturned));
565 queuedbuffers--;
566
567 whdr->dwFlags &= ~WHDR_INQUEUE;
568 whdr->dwFlags |= WHDR_DONE;
569 whdr->reserved = 0;
570
571 if(prevhdr == NULL)
572 wavehdr = whdr->lpNext;
573 else prevhdr->lpNext = whdr->lpNext;
574
575 whdr->lpNext = NULL;
576
577 bytesReturned += whdr->dwBufferLength;
578 wmutex.leave();
579
580 callback(WOM_DONE, (ULONG)whdr, 0);
581
582 wmutex.enter(VMUTEX_WAIT_FOREVER);
583 }
584 else break;
585
586 prevhdr = whdr;
587 whdr = whdr->lpNext;
588 }
589
590 if(wavehdr == NULL) {
591 //last buffer played -> no new ones -> silence buffer & continue
592 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));
593 if(State == STATE_PLAYING) {
594 fUnderrun = TRUE;
595 pause();
596//// memset(MixBuffer[curPlayBuf].pBuffer, 0, MixBuffer[curPlayBuf].ulBufferLength);
597//// goto sendbuffer;
598 }
599 wmutex.leave();
600 return;
601 }
602
603 writeBuffer();
604
605sendbuffer:
606 wmutex.leave();
607
608 //Transfer buffer to DART
609 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
610 USHORT selTIB = GetFS(); // save current FS selector
611 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
612 SetFS(selTIB); // switch back to the saved FS selector
613
614 dprintf2(("WINMM: handler DONE"));
615}
616/******************************************************************************/
617/******************************************************************************/
618void DartWaveOut::writeBuffer()
619{
620 ULONG buflength;
621
622 if(!fUnderrun && State == STATE_PLAYING && curFillBuf == curPlayBuf) {
623 dprintf2(("writeBuffer: no more room for more audio data"));
624 return; //no room left
625 }
626
627 if(curhdr == NULL)
628 curhdr = wavehdr;
629
630 while(curhdr && (curhdr->reserved == WHDR_DONE)) {
631 curhdr = curhdr->lpNext;
632 }
633
634 if(curhdr == NULL) {
635 return; //no unprocessed buffers left
636 }
637
638 dprintf2(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
639
640 while(curhdr) {
641 buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
642 (ULONG)curhdr->dwBufferLength - curFillPos);
643 dprintf2(("WINMM: copied %d bytes, cufFillPos = %d, curPlayPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curPlayPos, curhdr->dwBufferLength));
644
645 memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
646 curhdr->lpData + curFillPos, buflength);
647 curPlayPos += buflength;
648 curFillPos += buflength;
649 bytesCopied += buflength;
650
651 if(curFillPos == curhdr->dwBufferLength) {
652 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));
653
654 curFillPos = 0;
655 curhdr->reserved = WHDR_DONE;
656 //search for next unprocessed buffer
657 while(curhdr && (curhdr->reserved == WHDR_DONE))
658 curhdr = curhdr->lpNext;
659 }
660 if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
661 curPlayPos = 0;
662 if(++curFillBuf == PREFILLBUF_DART) {
663 curFillBuf = 0;
664 }
665 if(curFillBuf == curPlayBuf)
666 break; //no more room left
667 }
668 }
669}
670/******************************************************************************/
671/******************************************************************************/
672LONG APIENTRY WaveOutHandler(ULONG ulStatus,
673 PMCI_MIX_BUFFER pBuffer,
674 ULONG ulFlags)
675{
676 PTIB2 ptib2;
677 DartWaveOut *dwave;
678
679 ptib2 = (PTIB2)_getTIBvalue(offsetof(TIB, tib_ptib2));
680 if(ptib2 && HIBYTE(ptib2->tib2_ulpri) != PRTYC_TIMECRITICAL) {
681 dprintf(("Setting priority of DART thread to PRTYC_TIMECRITICAL"));
682 DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0);
683 }
684 if(pBuffer && pBuffer->ulUserParm)
685 {
686 dwave = (DartWaveOut *)pBuffer->ulUserParm;
687 dwave->handler(ulStatus, pBuffer, ulFlags);
688 }
689 return(TRUE);
690}
691
692/******************************************************************************/
693/******************************************************************************/
694MMRESULT DartWaveOut::setVolume(ULONG ulVol)
695{
696 ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
697 ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
698 MCI_SET_PARMS msp = {0};
699
700 dprintf(("DartWaveOut::setVolume %x %x", ulVolL, ulVolR));
701 volume = ulVol;
702
703// PD: My card (ESS 1868 PnP) driver can't change only
704// one channel Left or Right :-(
705//
706#ifdef GOOD_AUDIO_CARD_DRIVER
707
708 msp.ulAudio = MCI_SET_AUDIO_LEFT;
709 msp.ulLevel = ulVolL;
710
711 mciSendCommand(DeviceId, MCI_SET,
712 MCI_WAIT | MCI_SET_AUDIO | MCI_SET_VOLUME,
713 &msp, 0);
714
715 msp.ulAudio = MCI_SET_AUDIO_RIGHT;
716 msp.ulLevel = ulVolR;
717
718#else
719 msp.ulAudio = MCI_SET_AUDIO_ALL;
720 msp.ulLevel = max(ulVolR,ulVolL);
721#endif
722
723 mciSendCommand(DeviceId, MCI_SET,
724 MCI_WAIT | MCI_SET_AUDIO | MCI_SET_VOLUME,
725 &msp, 0);
726 return 0;
727}
728/******************************************************************************/
729/******************************************************************************/
730
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