source: trunk/src/winmm/waveoutdart.cpp@ 8947

Last change on this file since 8947 was 8947, checked in by sandervl, 23 years ago

Custom build function SetFixedWaveBufferSize added
File size: 24.3 KB
Line 
1/* $Id: waveoutdart.cpp,v 1.11 2002-07-31 13:51:21 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//Call to tell winmm to expect simple fixed size buffers, so
57//it doesn't have to use very small DART buffers; this will
58//only work in very specific cases; it is not a good general
59//purpose solution)
60/******************************************************************************/
61void WIN32API SetFixedWaveBufferSize()
62{
63 fFixedWaveBufferSize = TRUE;
64}
65/******************************************************************************/
66/******************************************************************************/
67DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx, ULONG fdwOpen, ULONG nCallback, ULONG dwInstance)
68 : WaveOut(pwfx, fdwOpen, nCallback, dwInstance)
69{
70 MCI_GENERIC_PARMS GenericParms;
71 MCI_AMP_OPEN_PARMS AmpOpenParms;
72 APIRET rc;
73
74 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
75 fMixerSetup = FALSE;
76 fUnderrun = FALSE;
77
78 ulBufSize = DART_BUFSIZE;
79
80 MixBuffer = (MCI_MIX_BUFFER *)malloc(PREFILLBUF_DART*sizeof(MCI_MIX_BUFFER));
81 MixSetupParms = (MCI_MIXSETUP_PARMS *)malloc(sizeof(MCI_MIXSETUP_PARMS));
82 BufferParms = (MCI_BUFFER_PARMS *)malloc(sizeof(MCI_BUFFER_PARMS));
83 if(!MixBuffer || !MixSetupParms || !BufferParms) {
84 dprintf(("ERROR: malloc failed!!"));
85 ulError = MMSYSERR_NOMEM;
86 return;
87 }
88
89 // Setup the open structure, pass the playlist and tell MCI_OPEN to use it
90 memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
91
92 AmpOpenParms.usDeviceID = ( USHORT ) 0;
93 AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
94
95 rc = mymciSendCommand(0, MCI_OPEN, MCI_WAIT | MCI_OPEN_TYPE_ID | MCI_OPEN_SHAREABLE,
96 (PVOID) &AmpOpenParms, 0);
97
98 DeviceId = AmpOpenParms.usDeviceID;
99 if(rc) {
100 dprintf(("MCI_OPEN failed\n"));
101 mciError(rc);
102 ulError = MMSYSERR_NODRIVER;
103 }
104 if(rc == 0) {
105 //Grab exclusive rights to device instance (NOT entire device)
106 GenericParms.hwndCallback = 0; //Not needed, so set to 0
107 rc = mymciSendCommand(DeviceId, MCI_ACQUIREDEVICE, MCI_EXCLUSIVE_INSTANCE,
108 (PVOID)&GenericParms, 0);
109 if(rc) {
110 dprintf(("MCI_ACQUIREDEVICE failed\n"));
111 mciError(rc);
112 ulError = MMSYSERR_NOTENABLED;
113 }
114 }
115 setVolume(volume);
116
117 if(!ulError)
118 callback(WOM_OPEN, 0, 0);
119}
120/******************************************************************************/
121/******************************************************************************/
122DartWaveOut::~DartWaveOut()
123{
124 MCI_GENERIC_PARMS GenericParms;
125
126 State = STATE_STOPPED;
127
128 if(!ulError) {
129 // Generic parameters
130 GenericParms.hwndCallback = 0; //hwndFrame
131
132 // Stop the playback.
133 mymciSendCommand(DeviceId, MCI_STOP,MCI_WAIT, (PVOID)&GenericParms,0);
134
135 mymciSendCommand(DeviceId, MCI_BUFFER,
136 MCI_WAIT | MCI_DEALLOCATE_MEMORY,
137 (PVOID)&BufferParms, 0);
138
139 // Generic parameters
140 GenericParms.hwndCallback = 0; //hwndFrame
141
142 // Close the device
143 mymciSendCommand(DeviceId, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
144 }
145
146 if(!ulError)
147 {
148 callback(WOM_CLOSE, 0, 0);
149 }
150
151 if(MixBuffer)
152 free(MixBuffer);
153 if(MixSetupParms)
154 free(MixSetupParms);
155 if(BufferParms)
156 free(BufferParms);
157}
158/******************************************************************************/
159/******************************************************************************/
160MMRESULT DartWaveOut::write(LPWAVEHDR pwh, UINT cbwh)
161{
162 MCI_GENERIC_PARMS GenericParms = {0};
163 APIRET rc;
164 int i, buflength;
165
166 queuedbuffers++;
167 if(fMixerSetup == FALSE)
168 {
169 dprintf(("device acquired\n"));
170 /* Set the MixSetupParms data structure to match the loaded file.
171 * This is a global that is used to setup the mixer.
172 */
173 memset(MixSetupParms, 0, sizeof( MCI_MIXSETUP_PARMS ) );
174
175 MixSetupParms->ulBitsPerSample = BitsPerSample;
176 MixSetupParms->ulSamplesPerSec = SampleRate;
177 MixSetupParms->ulFormatTag = MCI_WAVE_FORMAT_PCM;
178 MixSetupParms->ulChannels = nChannels;
179
180 dprintf(("bps %d, sps %d chan %d\n", BitsPerSample, SampleRate, nChannels));
181
182 /* Setup the mixer for playback of wave data
183 */
184 MixSetupParms->ulFormatMode = MCI_PLAY;
185 MixSetupParms->ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
186 MixSetupParms->pmixEvent = WaveOutHandler;
187
188 rc = mymciSendCommand(DeviceId,
189 MCI_MIXSETUP,
190 MCI_WAIT | MCI_MIXSETUP_INIT,
191 (PVOID)MixSetupParms,
192 0);
193
194 if ( rc != MCIERR_SUCCESS ) {
195 mciError(rc);
196 mymciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
197 (PVOID)&GenericParms, 0);
198 return(MMSYSERR_NOTSUPPORTED);
199 }
200
201 /*
202 * Set up the BufferParms data structure and allocate
203 * device buffers from the Amp-Mixer
204 */
205 dprintf(("mix setup %d, %d\n", pwh->dwBufferLength, pwh->dwBufferLength));
206
207#if 1
208 if(fFixedWaveBufferSize == FALSE)
209 {//by default we need to select a small enough buffer to be able to
210 //signal buffer completion in time
211 int consumerate = getAvgBytesPerSecond();
212 int minbufsize = consumerate/32;
213
214 ulBufSize = pwh->dwBufferLength/2;
215 if(ulBufSize > minbufsize) {
216 dprintf(("set buffer size to %d bytes (org size = %d)", minbufsize, pwh->dwBufferLength));
217 ulBufSize = minbufsize;
218 }
219 }
220 else ulBufSize = pwh->dwBufferLength;
221#else
222 if(pwh->dwBufferLength >= 512 && pwh->dwBufferLength <= 1024)
223 ulBufSize = pwh->dwBufferLength;
224 else ulBufSize = 1024;
225#endif
226
227 MixSetupParms->ulBufferSize = ulBufSize;
228
229 BufferParms->ulNumBuffers = PREFILLBUF_DART;
230 BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
231 BufferParms->pBufList = MixBuffer;
232
233 for(i=0;i<PREFILLBUF_DART;i++) {
234 MixBuffer[i].ulUserParm = (ULONG)this;
235 }
236
237 rc = mymciSendCommand(DeviceId,
238 MCI_BUFFER,
239 MCI_WAIT | MCI_ALLOCATE_MEMORY,
240 (PVOID)BufferParms,
241 0);
242
243 if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
244 mciError(rc);
245 mymciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
246 (PVOID)&GenericParms, 0);
247 return(MMSYSERR_NOTSUPPORTED);
248 }
249
250 wmutex.enter();
251 fMixerSetup = TRUE;
252
253 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
254 bytesPlayed = bytesCopied = bytesReturned = 0;
255
256 for(i=0;i<PREFILLBUF_DART;i++) {
257 memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
258 }
259 dprintf(("Dart opened, bufsize = %d\n", MixBuffer[0].ulBufferLength));
260
261 wavehdr = pwh;
262 curhdr = pwh;
263 pwh->lpNext = NULL;
264 pwh->reserved = 0;
265
266 if(State != STATE_STOPPED) {//don't start playback if paused
267 wmutex.leave();
268 return(MMSYSERR_NOERROR);
269 }
270
271 writeBuffer(); //must be called before (re)starting playback
272
273 dprintf(("MixSetupParms = %X\n", MixSetupParms));
274 State = STATE_PLAYING;
275 fUnderrun = FALSE;
276 wmutex.leave();
277
278 //write buffers to DART; starts playback
279 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
280 USHORT selTIB = RestoreOS2FS(); // save current FS selector
281
282 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
283 MixBuffer,
284 PREFILLBUF_DART);
285 SetFS(selTIB); // switch back to the saved FS selector
286 dprintf(("Dart playing\n"));
287 }
288 else
289 {
290 pwh->lpNext = NULL;
291 pwh->reserved = 0;
292 wmutex.enter();
293 if(wavehdr) {
294 WAVEHDR *chdr = wavehdr;
295 while(chdr->lpNext) {
296 chdr = chdr->lpNext;
297 }
298 chdr->lpNext = pwh;
299 }
300 else wavehdr = pwh;
301
302 if(!fUnderrun && State != STATE_STOPPED) {//don't start playback if paused
303 wmutex.leave();
304 return(MMSYSERR_NOERROR);
305 }
306
307 writeBuffer(); //must be called before (re)starting playback
308
309 State = STATE_PLAYING;
310 fUnderrun = FALSE;
311 wmutex.leave();
312
313 //write buffers to DART; starts playback
314 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
315 USHORT selTIB = RestoreOS2FS(); // save current FS selector
316
317 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
318 MixBuffer,
319 PREFILLBUF_DART);
320 SetFS(selTIB); // switch back to the saved FS selector
321
322 dprintf(("Dart playing\n"));
323 }
324 return(MMSYSERR_NOERROR);
325}
326/******************************************************************************/
327/******************************************************************************/
328MMRESULT DartWaveOut::pause()
329{
330 MCI_GENERIC_PARMS Params;
331
332 dprintf(("WINMM: DartWaveOut::pause"));
333
334 wmutex.enter();
335 if(State != STATE_PLAYING) {
336 State = STATE_PAUSED;
337 wmutex.leave();
338 return(MMSYSERR_NOERROR);
339 }
340
341 State = STATE_PAUSED;
342 wmutex.leave();
343
344 memset(&Params, 0, sizeof(Params));
345
346 // Pause the playback.
347 mymciSendCommand(DeviceId, MCI_PAUSE, MCI_WAIT, (PVOID)&Params, 0);
348
349 return(MMSYSERR_NOERROR);
350}
351/******************************************************************************/
352/******************************************************************************/
353MMRESULT DartWaveOut::resume()
354{
355 MCI_GENERIC_PARMS Params;
356 int i, curbuf;
357
358 dprintf(("DartWaveOut::resume"));
359
360 wmutex.enter();
361 if(State != STATE_PAUSED) {
362 wmutex.leave();
363 return(MMSYSERR_NOERROR);
364 }
365 wmutex.leave();
366
367 //Only write buffers to dart if mixer has been initialized; if not, then
368 //the first buffer write will do this for us.
369 if(fMixerSetup == TRUE)
370 {
371 wmutex.enter();
372 State = STATE_PLAYING;
373 fUnderrun = FALSE;
374 wmutex.leave();
375 curbuf = curPlayBuf;
376
377 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
378 USHORT selTIB = GetFS(); // save current FS selector
379
380 for(i=0;i<PREFILLBUF_DART;i++)
381 {
382 dprintf(("restart: write buffer at %x size %d", MixBuffer[curbuf].pBuffer, MixBuffer[curbuf].ulBufferLength));
383 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curbuf], 1);
384 if(++curbuf == PREFILLBUF_DART)
385 curbuf = 0;
386 }
387 SetFS(selTIB); // switch back to the saved FS selector
388 }
389
390 return(MMSYSERR_NOERROR);
391}
392/******************************************************************************/
393/******************************************************************************/
394MMRESULT DartWaveOut::stop()
395{
396 MCI_GENERIC_PARMS Params;
397
398 dprintf(("DartWaveOut::stop %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
399 if(State != STATE_PLAYING)
400 return(MMSYSERR_HANDLEBUSY);
401
402 memset(&Params, 0, sizeof(Params));
403
404 // Stop the playback.
405 mymciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
406
407 State = STATE_STOPPED;
408 fUnderrun = FALSE;
409
410 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
411 bytesPlayed = bytesCopied = bytesReturned = 0;
412
413 return(MMSYSERR_NOERROR);
414}
415/******************************************************************************/
416/******************************************************************************/
417MMRESULT DartWaveOut::reset()
418{
419 MCI_GENERIC_PARMS Params;
420 LPWAVEHDR tmpwavehdr;
421
422 dprintf(("DartWaveOut::reset %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
423 if(State != STATE_PLAYING)
424 return(MMSYSERR_HANDLEBUSY);
425
426 memset(&Params, 0, sizeof(Params));
427
428 // Stop the playback.
429 mymciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
430
431 wmutex.enter();
432 while(wavehdr)
433 {
434 wavehdr->dwFlags |= WHDR_DONE;
435 wavehdr->dwFlags &= ~WHDR_INQUEUE;
436 wavehdr->reserved = 0;
437 tmpwavehdr = wavehdr;
438 wavehdr = wavehdr->lpNext;
439 tmpwavehdr->lpNext = NULL;
440 wmutex.leave();
441
442 callback(WOM_DONE, (ULONG)tmpwavehdr, 0);
443 wmutex.enter();
444 }
445 wavehdr = NULL;
446 State = STATE_STOPPED;
447 fUnderrun = FALSE;
448
449 curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
450 bytesPlayed = bytesCopied = bytesReturned = 0;
451 queuedbuffers = 0;
452
453 wmutex.leave();
454 return(MMSYSERR_NOERROR);
455}
456/******************************************************************************/
457/******************************************************************************/
458ULONG DartWaveOut::getPosition()
459{
460 MCI_STATUS_PARMS mciStatus = {0};
461 ULONG rc, nrbytes;
462
463 mciStatus.ulItem = MCI_STATUS_POSITION;
464 rc = mymciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM|MCI_WAIT, (PVOID)&mciStatus, 0);
465 if((rc & 0xFFFF) == MCIERR_SUCCESS) {
466 nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
467 return nrbytes;;
468 }
469 mciError(rc);
470 return 0xFFFFFFFF;
471}
472/******************************************************************************/
473/******************************************************************************/
474BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
475 ULONG nSamplesPerSec, ULONG wBitsPerSample)
476{
477 MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
478 MCI_GENERIC_PARMS GenericParms;
479 MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
480 int i, freqbits = 0;
481 ULONG rc, DeviceId;
482 BOOL winrc;
483
484 dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
485
486 memset(&mciOpenParms, /* Object to fill with zeros. */
487 0, /* Value to place into the object. */
488 sizeof( mciOpenParms ) ); /* How many zero's to use. */
489
490 mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
491
492 rc = mymciSendCommand( (USHORT) 0,
493 MCI_OPEN,
494 MCI_WAIT | MCI_OPEN_TYPE_ID,
495 (PVOID) &mciOpenParms,
496 0);
497 if((rc & 0xFFFF) != MCIERR_SUCCESS) {
498 mciError(rc);
499 return(FALSE);
500 }
501 DeviceId = mciOpenParms.usDeviceID;
502
503 memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
504
505 mciAudioCaps.ulBitsPerSample = wBitsPerSample;
506 mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
507 mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
508 mciAudioCaps.ulChannels = nChannels;
509 mciAudioCaps.ulFormatMode = MCI_PLAY;
510 mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
511
512 rc = mymciSendCommand(DeviceId, /* Device ID */
513 MCI_GETDEVCAPS,
514 MCI_WAIT | MCI_GETDEVCAPS_EXTENDED | MCI_GETDEVCAPS_ITEM,
515 (PVOID) &mciAudioCaps,
516 0);
517 if((rc & 0xFFFF) != MCIERR_SUCCESS) {
518 mciError(rc);
519 winrc = FALSE;
520 }
521 else winrc = TRUE;
522
523 // Close the device
524 mymciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
525 return(winrc);
526}
527/******************************************************************************/
528/******************************************************************************/
529void DartWaveOut::mciError(ULONG ulError)
530{
531#ifdef DEBUG
532 char szError[256] = "";
533
534 mymciGetErrorString(ulError, szError, sizeof(szError));
535 dprintf(("WINMM: DartWaveOut: %s\n", szError));
536#endif
537}
538//******************************************************************************
539//******************************************************************************
540void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
541{
542 ULONG buflength;
543 WAVEHDR *whdr, *prevhdr = NULL;
544
545 dprintf2(("WINMM: handler %d; buffers left %d", curPlayBuf, queuedbuffers));
546 if(ulFlags == MIX_STREAM_ERROR) {
547 if(ulStatus == ERROR_DEVICE_UNDERRUN) {
548 dprintf(("WINMM: WaveOut handler UNDERRUN! state %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
549 if(State == STATE_PLAYING) {
550 fUnderrun = TRUE;
551 stop(); //out of buffers, so stop playback
552 }
553 return;
554 }
555 dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
556 return;
557 }
558 if(State != STATE_PLAYING) {
559 return;
560 }
561
562 wmutex.enter();
563
564 bytesPlayed += MixBuffer[curPlayBuf].ulBufferLength;
565
566 if(curPlayBuf == PREFILLBUF_DART-1)
567 curPlayBuf = 0;
568 else curPlayBuf++;
569
570 fUnderrun = FALSE;
571
572 whdr = wavehdr;
573 while(whdr) {
574 if(whdr->reserved == WHDR_DONE)
575 {
576 if(bytesPlayed < bytesReturned + whdr->dwBufferLength) {
577 dprintf2(("Buffer marked done, but not yet played completely (play %d/%d, cop %d, ret %d)", bytesPlayed, getPosition(), bytesCopied, bytesReturned));
578 break; //not yet done
579 }
580
581 dprintf2(("WINMM: handler buf %X done (play %d/%d, cop %d, ret %d)", whdr, bytesPlayed, getPosition(), bytesCopied, bytesReturned));
582 queuedbuffers--;
583
584 whdr->dwFlags &= ~WHDR_INQUEUE;
585 whdr->dwFlags |= WHDR_DONE;
586 whdr->reserved = 0;
587
588 if(prevhdr == NULL)
589 wavehdr = whdr->lpNext;
590 else prevhdr->lpNext = whdr->lpNext;
591
592 whdr->lpNext = NULL;
593
594 bytesReturned += whdr->dwBufferLength;
595 wmutex.leave();
596
597 callback(WOM_DONE, (ULONG)whdr, 0);
598
599 wmutex.enter();
600 }
601 else break;
602
603 prevhdr = whdr;
604 whdr = whdr->lpNext;
605 }
606
607 if(wavehdr == NULL) {
608 //last buffer played -> no new ones -> silence buffer & continue
609 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));
610 if(State == STATE_PLAYING) {
611 fUnderrun = TRUE;
612 pause();
613//// memset(MixBuffer[curPlayBuf].pBuffer, 0, MixBuffer[curPlayBuf].ulBufferLength);
614//// goto sendbuffer;
615 }
616 wmutex.leave();
617 return;
618 }
619
620 writeBuffer();
621
622sendbuffer:
623 wmutex.leave();
624
625 //Transfer buffer to DART
626 // MCI_MIXSETUP_PARMS->pMixWrite does alter FS: selector!
627 USHORT selTIB = RestoreOS2FS(); // save current FS selector
628 MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
629 SetFS(selTIB); // switch back to the saved FS selector
630
631 dprintf2(("WINMM: handler DONE"));
632}
633/******************************************************************************/
634/******************************************************************************/
635void DartWaveOut::writeBuffer()
636{
637 ULONG buflength;
638
639 if(!fUnderrun && State == STATE_PLAYING && curFillBuf == curPlayBuf) {
640 dprintf2(("writeBuffer: no more room for more audio data"));
641 return; //no room left
642 }
643
644 if(curhdr == NULL)
645 curhdr = wavehdr;
646
647 while(curhdr && (curhdr->reserved == WHDR_DONE)) {
648 curhdr = curhdr->lpNext;
649 }
650
651 if(curhdr == NULL) {
652 return; //no unprocessed buffers left
653 }
654
655 dprintf2(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
656
657 while(curhdr) {
658 buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
659 (ULONG)curhdr->dwBufferLength - curFillPos);
660 dprintf2(("WINMM: copied %d bytes, cufFillPos = %d, curPlayPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curPlayPos, curhdr->dwBufferLength));
661
662 memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
663 curhdr->lpData + curFillPos, buflength);
664 curPlayPos += buflength;
665 curFillPos += buflength;
666 bytesCopied += buflength;
667
668 if(curFillPos == curhdr->dwBufferLength) {
669 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));
670
671 curFillPos = 0;
672 curhdr->reserved = WHDR_DONE;
673 //search for next unprocessed buffer
674 while(curhdr && (curhdr->reserved == WHDR_DONE))
675 curhdr = curhdr->lpNext;
676 }
677 if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
678 curPlayPos = 0;
679 if(++curFillBuf == PREFILLBUF_DART) {
680 curFillBuf = 0;
681 }
682 if(curFillBuf == curPlayBuf)
683 break; //no more room left
684 }
685 }
686}
687/******************************************************************************/
688/******************************************************************************/
689LONG APIENTRY WaveOutHandler(ULONG ulStatus,
690 PMCI_MIX_BUFFER pBuffer,
691 ULONG ulFlags)
692{
693 PTIB2 ptib2;
694 DartWaveOut *dwave;
695
696 dprintf2(("WaveOutHandler %x %x %x", ulStatus, pBuffer, ulFlags));
697
698 ptib2 = (PTIB2)_getTIBvalue(offsetof(TIB, tib_ptib2));
699 if(ptib2 && HIBYTE(ptib2->tib2_ulpri) != PRTYC_TIMECRITICAL) {
700 dprintf(("Setting priority of DART thread to PRTYC_TIMECRITICAL"));
701 DosSetPriority(PRTYS_THREAD, PRTYC_TIMECRITICAL, 0, 0);
702 }
703 if(pBuffer && pBuffer->ulUserParm)
704 {
705 dwave = (DartWaveOut *)pBuffer->ulUserParm;
706 dwave->handler(ulStatus, pBuffer, ulFlags);
707 }
708 return(TRUE);
709}
710
711/******************************************************************************/
712/******************************************************************************/
713MMRESULT DartWaveOut::setVolume(ULONG ulVol)
714{
715 ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
716 ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
717 MCI_SET_PARMS msp = {0};
718
719 dprintf(("DartWaveOut::setVolume %d %d", ulVolL, ulVolR));
720 volume = ulVol;
721
722// PD: My card (ESS 1868 PnP) driver can't change only
723// one channel Left or Right :-(
724//
725#ifdef GOOD_AUDIO_CARD_DRIVER
726
727 msp.ulAudio = MCI_SET_AUDIO_LEFT;
728 msp.ulLevel = ulVolL;
729
730 mymciSendCommand(DeviceId, MCI_SET,
731 MCI_WAIT | MCI_SET_AUDIO | MCI_SET_VOLUME,
732 &msp, 0);
733
734 msp.ulAudio = MCI_SET_AUDIO_RIGHT;
735 msp.ulLevel = ulVolR;
736
737#else
738 msp.ulAudio = MCI_SET_AUDIO_ALL;
739 msp.ulLevel = max(ulVolR,ulVolL);
740#endif
741
742 mymciSendCommand(DeviceId, MCI_SET,
743 MCI_WAIT | MCI_SET_AUDIO | MCI_SET_VOLUME,
744 &msp, 0);
745 return 0;
746}
747/******************************************************************************/
748/******************************************************************************/
749
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