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source: trunk/src/winmm/dwaveout.cpp@ 3320

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Last change on this file since 3320 was 3320, checked in by sandervl, 25 years ago
callback + buffer size fixes
File size: 23.4 KB

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1	/* $Id: dwaveout.cpp,v 1.19 2000-04-05 18:39:23 sandervl Exp $ */
2
3	/*
4	* Wave playback class
5	*
6	* Copyright 1998 Sander van Leeuwen (sandervl@xs4all.nl)
7	*
8	*
9	* Project Odin Software License can be found in LICENSE.TXT
10	*
11	*/
12
13
14	/****************************************************************************
15	* Includes *
16	****************************************************************************/
17
18
19
20	#define INCL_BASE
21	#define INCL_OS2MM
22	#include <os2wrap.h> //Odin32 OS/2 api wrappers
23	#include <os2mewrap.h> //Odin32 OS/2 MMPM/2 api wrappers
24	#include <stdlib.h>
25	#include <string.h>
26	#define OS2_ONLY
27	#include <win32api.h>
28	#include <wprocess.h>
29
30	#include "misc.h"
31	#include "dwaveout.h"
32
33	#define DBG_LOCALLOG DBG_dwaveout
34	#include "dbglocal.h"
35
36	#ifndef min
37	#define min(a, b) ((a > b) ? b : a)
38	#endif
39
40	#ifndef max
41	#define max(a, b) ((a > b) ? a : b)
42	#endif
43
44	LONG APIENTRY WaveOutHandler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags);
45
46	//TODO: mulaw, alaw & adpcm
47	/******************************************************************************/
48	/******************************************************************************/
49	DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx)
50	{
51	Init(pwfx);
52	}
53	/******************************************************************************/
54	/******************************************************************************/
55	DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx, ULONG nCallback, ULONG dwInstance, USHORT usSel)
56	{
57	Init(pwfx);
58
59	mthdCallback = (LPDRVCALLBACK)nCallback; // callback function
60	selCallback = usSel; // callback win32 tib selector
61	this->dwInstance = dwInstance;
62
63	if(!ulError)
64	callback((ULONG)this, WOM_OPEN, dwInstance, 0, 0);
65	}
66	/******************************************************************************/
67	/******************************************************************************/
68	DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx, HWND hwndCallback)
69	{
70	Init(pwfx);
71
72	this->hwndCallback = hwndCallback;
73
74	if(!ulError)
75	PostMessageA(hwndCallback, WOM_OPEN, 0, 0);
76	}
77	/******************************************************************************/
78	/******************************************************************************/
79	void DartWaveOut::callback(HDRVR h, UINT uMessage, DWORD dwUser, DWORD dw1, DWORD dw2)
80	{
81	USHORT selTIB = GetFS(); // save current FS selector
82
83	dprintf(("WINMM:DartWaveOut::callback(HDRVR h=%08xh, UINT uMessage=%08xh, DWORD dwUser=%08xh, DWORD dw1=%08xh, DWORD dw2=%08xh)\n",
84	h,
85	uMessage,
86	dwUser,
87	dw1,
88	dw2));
89
90	if (selCallback != 0)
91	SetFS(selCallback); // switch to callback win32 tib selector (stored in waveOutOpen)
92	else
93	dprintf(("WINMM:DartWaveOut::callback - selCallback is invalid"));
94
95	//@@@PH 1999/12/28 Shockwave Flashes seem to make assumptions on a
96	// specific stack layout. Do we have the correct calling convention here?
97	mthdCallback(h,uMessage,dwUser,dw1,dw2);
98	SetFS(selTIB); // switch back to the saved FS selector
99	}
100	/******************************************************************************/
101	/******************************************************************************/
102	void DartWaveOut::Init(LPWAVEFORMATEX pwfx)
103	{
104	MCI_GENERIC_PARMS GenericParms;
105	MCI_AMP_OPEN_PARMS AmpOpenParms;
106	APIRET rc;
107
108	curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
109
110	fMixerSetup = FALSE;
111	next = NULL;
112	wavehdr = NULL;
113	curhdr = NULL;
114	mthdCallback = NULL;
115	hwndCallback = 0;
116	selCallback = 0;
117	dwInstance = 0;
118	ulError = 0;
119	selCallback = 0;
120	volume = 0xFFFFFFFF;
121	State = STATE_STOPPED;
122
123	MixBuffer = (MCI_MIX_BUFFER )malloc(PREFILLBUF_DARTsizeof(MCI_MIX_BUFFER));
124	MixSetupParms = (MCI_MIXSETUP_PARMS *)malloc(sizeof(MCI_MIXSETUP_PARMS));
125	BufferParms = (MCI_BUFFER_PARMS *)malloc(sizeof(MCI_BUFFER_PARMS));
126
127	BitsPerSample = pwfx->wBitsPerSample;
128	SampleRate = pwfx->nSamplesPerSec;
129	this->nChannels = pwfx->nChannels;
130	ulBufSize = DART_BUFSIZE;
131
132	dprintf(("waveOutOpen: samplerate %d, numChan %d bps %d (%d), format %x", SampleRate, nChannels, BitsPerSample, pwfx->nBlockAlign, pwfx->wFormatTag));
133	// Setup the open structure, pass the playlist and tell MCI_OPEN to use it
134	memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
135
136	AmpOpenParms.usDeviceID = ( USHORT ) 0;
137	AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
138
139	rc = mciSendCommand(0, MCI_OPEN,
140	MCI_WAIT \| MCI_OPEN_TYPE_ID \| MCI_OPEN_SHAREABLE,
141	(PVOID) &AmpOpenParms,
142	0);
143	DeviceId = AmpOpenParms.usDeviceID;
144	if(rc) {
145	dprintf(("MCI_OPEN failed\n"));
146	mciError(rc);
147	ulError = MMSYSERR_NODRIVER;
148	}
149	if(rc == 0) {
150	//Grab exclusive rights to device instance (NOT entire device)
151	GenericParms.hwndCallback = 0; //Not needed, so set to 0
152	rc = mciSendCommand(DeviceId, MCI_ACQUIREDEVICE, MCI_EXCLUSIVE_INSTANCE,
153	(PVOID)&GenericParms, 0);
154	if(rc) {
155	dprintf(("MCI_ACQUIREDEVICE failed\n"));
156	mciError(rc);
157	ulError = MMSYSERR_NOTENABLED;
158	}
159	}
160	State = STATE_STOPPED;
161
162	setVolume(volume);
163
164	wmutex = new VMutex();
165	if(wmutex == NULL) {
166	ulError = MMSYSERR_NOTSUPPORTED;
167	}
168	if(wmutex)
169	wmutex->enter(VMUTEX_WAIT_FOREVER);
170
171	if(waveout == NULL) {
172	waveout = this;
173	}
174	else {
175	DartWaveOut *dwave = waveout;
176
177	while(dwave->next) {
178	dwave = dwave->next;
179	}
180	dwave->next = this;
181	}
182
183	if(wmutex)
184	wmutex->leave();
185	}
186	/******************************************************************************/
187	/******************************************************************************/
188	DartWaveOut::~DartWaveOut()
189	{
190	MCI_GENERIC_PARMS GenericParms;
191
192	if(!ulError) {
193	// Generic parameters
194	GenericParms.hwndCallback = 0; //hwndFrame
195
196	// Stop the playback.
197	mciSendCommand(DeviceId, MCI_STOP,MCI_WAIT, (PVOID)&GenericParms,0);
198
199	mciSendCommand(DeviceId,
200	MCI_BUFFER,
201	MCI_WAIT \| MCI_DEALLOCATE_MEMORY,
202	(PVOID)&BufferParms,
203	0);
204
205	// Generic parameters
206	GenericParms.hwndCallback = 0; //hwndFrame
207
208	// Close the device
209	mciSendCommand(DeviceId, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
210	}
211
212	if(wmutex)
213	wmutex->enter(VMUTEX_WAIT_FOREVER);
214
215	State = STATE_STOPPED;
216
217	if(waveout == this) {
218	waveout = this->next;
219	}
220	else {
221	DartWaveOut *dwave = waveout;
222
223	while(dwave->next != this) {
224	dwave = dwave->next;
225	}
226	dwave->next = this->next;
227	}
228	if(wmutex)
229	wmutex->leave();
230
231	if(!ulError) {
232	if(mthdCallback) {
233	callback((ULONG)this, WOM_CLOSE, dwInstance, 0, 0);
234	}
235	else
236	if(hwndCallback)
237	PostMessageA(hwndCallback, WOM_CLOSE, 0, 0);
238	}
239
240	if(wmutex)
241	delete wmutex;
242
243	if(MixBuffer)
244	free(MixBuffer);
245	if(MixSetupParms)
246	free(MixSetupParms);
247	if(BufferParms)
248	free(BufferParms);
249	}
250	/******************************************************************************/
251	/******************************************************************************/
252	MMRESULT DartWaveOut::getError()
253	{
254	return(ulError);
255	}
256	/******************************************************************************/
257	/******************************************************************************/
258	int DartWaveOut::getNumDevices()
259	{
260	MCI_GENERIC_PARMS GenericParms;
261	MCI_AMP_OPEN_PARMS AmpOpenParms;
262	APIRET rc;
263
264	// Setup the open structure, pass the playlist and tell MCI_OPEN to use it
265	memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
266
267	AmpOpenParms.usDeviceID = ( USHORT ) 0;
268	AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
269
270	rc = mciSendCommand(0, MCI_OPEN,
271	MCI_WAIT \| MCI_OPEN_TYPE_ID \| MCI_OPEN_SHAREABLE,
272	(PVOID) &AmpOpenParms,
273	0);
274
275	if(rc) {
276	return 0; //no devices present
277	}
278
279	// Generic parameters
280	GenericParms.hwndCallback = 0; //hwndFrame
281
282	// Close the device
283	mciSendCommand(AmpOpenParms.usDeviceID, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
284
285	return 1;
286	}
287	/******************************************************************************/
288	/******************************************************************************/
289	MMRESULT DartWaveOut::write(LPWAVEHDR pwh, UINT cbwh)
290	{
291	MCI_GENERIC_PARMS GenericParms = {0};
292	APIRET rc;
293	int i, buflength;
294
295	if(fMixerSetup == FALSE)
296	{
297	dprintf(("device acquired\n"));
298	/* Set the MixSetupParms data structure to match the loaded file.
299	* This is a global that is used to setup the mixer.
300	*/
301	memset(MixSetupParms, 0, sizeof( MCI_MIXSETUP_PARMS ) );
302
303	MixSetupParms->ulBitsPerSample = BitsPerSample;
304	MixSetupParms->ulSamplesPerSec = SampleRate;
305	MixSetupParms->ulFormatTag = MCI_WAVE_FORMAT_PCM;
306	MixSetupParms->ulChannels = nChannels;
307
308	dprintf(("bps %d, sps %d chan %d\n", BitsPerSample, SampleRate, nChannels));
309
310	/* Setup the mixer for playback of wave data
311	*/
312	MixSetupParms->ulFormatMode = MCI_PLAY;
313	MixSetupParms->ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
314	MixSetupParms->pmixEvent = WaveOutHandler;
315
316	rc = mciSendCommand(DeviceId,
317	MCI_MIXSETUP,
318	MCI_WAIT \| MCI_MIXSETUP_INIT,
319	(PVOID)MixSetupParms,
320	0);
321
322	if ( rc != MCIERR_SUCCESS ) {
323	mciError(rc);
324	mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
325	(PVOID)&GenericParms, 0);
326	return(MMSYSERR_NOTSUPPORTED);
327	}
328
329	/*
330	* Set up the BufferParms data structure and allocate
331	* device buffers from the Amp-Mixer
332	*/
333	dprintf(("mix setup %d, %d\n", pwh->dwBufferLength, pwh->dwBufferLength));
334
335	#if 1
336	ulBufSize = pwh->dwBufferLength/2;
337	if(ulBufSize < 128) {
338	dprintf(("set buffer size to 128 bytes (org size = %d)", pwh->dwBufferLength));
339	ulBufSize = 128;
340	}
341	#else
342	if(pwh->dwBufferLength >= 512 && pwh->dwBufferLength <= 1024)
343	ulBufSize = pwh->dwBufferLength;
344	else ulBufSize = 1024;
345	#endif
346
347	MixSetupParms->ulBufferSize = ulBufSize;
348
349	BufferParms->ulNumBuffers = PREFILLBUF_DART;
350	BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
351	BufferParms->pBufList = MixBuffer;
352
353	for(i=0;i<PREFILLBUF_DART;i++) {
354	MixBuffer[i].ulUserParm = (ULONG)this;
355	}
356
357	rc = mciSendCommand(DeviceId,
358	MCI_BUFFER,
359	MCI_WAIT \| MCI_ALLOCATE_MEMORY,
360	(PVOID)BufferParms,
361	0);
362
363	if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
364	mciError(rc);
365	mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
366	(PVOID)&GenericParms, 0);
367	return(MMSYSERR_NOTSUPPORTED);
368	}
369
370	wmutex->enter(VMUTEX_WAIT_FOREVER);
371	fMixerSetup = TRUE;
372
373	curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
374
375	for(i=0;i<PREFILLBUF_DART;i++) {
376	memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
377	}
378	dprintf(("Dart opened, bufsize = %d\n", MixBuffer[i].ulBufferLength));
379
380	wavehdr = pwh;
381	curhdr = pwh;
382	pwh->lpNext = NULL;
383
384	while(TRUE) {
385	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
386	(ULONG)wavehdr->dwBufferLength - curFillPos);
387	dprintf(("Copying %d data; curPlayPos = %d curFillPos = %d\n", buflength, curPlayPos, curFillPos));
388
389	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
390	wavehdr->lpData + curFillPos,
391	buflength);
392
393	curPlayPos += buflength;
394	curFillPos += buflength;
395	if(curFillPos == wavehdr->dwBufferLength) {
396	dprintf(("Processed first win32 buffer\n"));
397	curFillPos = 0;
398	wavehdr->dwFlags \|= WHDR_DONE;
399	curhdr = NULL;
400	}
401	if(curPlayPos == MixBuffer[curPlayBuf].ulBufferLength) {
402	if(++curPlayBuf == PREFILLBUF_DART) {
403	curPlayBuf = 0;
404	break;
405	}
406	curPlayPos = 0;
407	}
408	if(curFillPos == 0)
409	break;
410	}
411	dprintf(("MixSetupParms = %X\n", MixSetupParms));
412	State = STATE_PLAYING;
413	wmutex->leave();
414
415	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
416	MixBuffer,
417	PREFILLBUF_DART);
418	dprintf(("Dart playing\n"));
419	}
420	else
421	{
422	wmutex->enter(VMUTEX_WAIT_FOREVER);
423	pwh->lpNext = NULL;
424	if(wavehdr) {
425	WAVEHDR *chdr = wavehdr;
426	while(chdr->lpNext) {
427	chdr = chdr->lpNext;
428	}
429	chdr->lpNext = pwh;
430	}
431	else wavehdr = pwh;
432	wmutex->leave();
433	if(State != STATE_PLAYING) {//continue playback
434	restart();
435	}
436	}
437
438	return(MMSYSERR_NOERROR);
439	}
440	/******************************************************************************/
441	/******************************************************************************/
442	MMRESULT DartWaveOut::pause()
443	{
444	MCI_GENERIC_PARMS Params;
445
446	if(State != STATE_PLAYING)
447	return(MMSYSERR_NOERROR);
448
449	wmutex->enter(VMUTEX_WAIT_FOREVER);
450	State = STATE_PAUSED;
451	wmutex->leave();
452
453	memset(&Params, 0, sizeof(Params));
454
455	// Stop the playback.
456	mciSendCommand(DeviceId, MCI_PAUSE, MCI_WAIT, (PVOID)&Params, 0);
457
458	return(MMSYSERR_NOERROR);
459	}
460	/******************************************************************************/
461	/******************************************************************************/
462	MMRESULT DartWaveOut::reset()
463	{
464	MCI_GENERIC_PARMS Params;
465
466	dprintf(("DartWaveOut::reset %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
467	if(State != STATE_PLAYING)
468	return(MMSYSERR_HANDLEBUSY);
469
470	memset(&Params, 0, sizeof(Params));
471
472	// Stop the playback.
473	mciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
474
475	dprintf(("Nr of threads blocked on mutex = %d\n", wmutex->getNrBlocked()));
476
477	wmutex->enter(VMUTEX_WAIT_FOREVER);
478	while(wavehdr) {
479	wavehdr->dwFlags \|= WHDR_DONE;
480	wmutex->leave();
481	if(mthdCallback) {
482	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)wavehdr, 0);
483	}
484	else {
485	if(hwndCallback)
486	PostMessageA(hwndCallback, WOM_DONE, (ULONG)wavehdr, 0);
487	}
488	wmutex->enter(VMUTEX_WAIT_FOREVER);
489	wavehdr = wavehdr->lpNext;
490	}
491	wavehdr = NULL;
492	State = STATE_STOPPED;
493
494	wmutex->leave();
495	return(MMSYSERR_NOERROR);
496	}
497	/******************************************************************************/
498	/******************************************************************************/
499	MMRESULT DartWaveOut::restart()
500	{
501	dprintf(("DartWaveOut::restart"));
502	wmutex->enter(VMUTEX_WAIT_FOREVER);
503	State = STATE_PLAYING;
504	wmutex->leave();
505	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
506	&MixBuffer[curPlayBuf],
507	PREFILLBUF_DART);
508	return(MMSYSERR_NOERROR);
509	}
510	/******************************************************************************/
511	/******************************************************************************/
512	ULONG DartWaveOut::getPosition()
513	{
514	MCI_STATUS_PARMS mciStatus = {0};
515	ULONG rc, nrbytes;
516
517	if(State != STATE_PLAYING)
518	return 0;
519
520	mciStatus.ulItem = MCI_STATUS_POSITION;
521	rc = mciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM\|MCI_WAIT, (PVOID)&mciStatus, 0);
522	if((rc & 0xFFFF) == MCIERR_SUCCESS) {
523	nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
524	return nrbytes;;
525	}
526	mciError(rc);
527	return 0xFFFFFFFF;
528	}
529	/******************************************************************************/
530	/******************************************************************************/
531	BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
532	ULONG nSamplesPerSec, ULONG wBitsPerSample)
533	{
534	MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
535	MCI_GENERIC_PARMS GenericParms;
536	MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
537	int i, freqbits = 0;
538	ULONG rc, DeviceId;
539	BOOL winrc;
540
541	dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
542
543	memset(&mciOpenParms, /* Object to fill with zeros. */
544	0, /* Value to place into the object. */
545	sizeof( mciOpenParms ) ); /* How many zero's to use. */
546
547	mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
548
549	rc = mciSendCommand( (USHORT) 0,
550	MCI_OPEN,
551	MCI_WAIT \| MCI_OPEN_TYPE_ID,
552	(PVOID) &mciOpenParms,
553	0);
554	if (rc != 0) {
555	return(FALSE);
556	}
557	DeviceId = mciOpenParms.usDeviceID;
558
559	memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
560
561	mciAudioCaps.ulBitsPerSample = wBitsPerSample;
562	mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
563	mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
564	mciAudioCaps.ulChannels = nChannels;
565	mciAudioCaps.ulFormatMode = MCI_PLAY;
566	mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
567
568	rc = mciSendCommand(DeviceId, /* Device ID */
569	MCI_GETDEVCAPS,
570	MCI_WAIT \| MCI_GETDEVCAPS_EXTENDED \| MCI_GETDEVCAPS_ITEM,
571	(PVOID) &mciAudioCaps,
572	0);
573	if((rc & 0xFFFF) != MCIERR_SUCCESS) {
574	mciError(rc);
575	winrc = FALSE;
576	}
577	else winrc = TRUE;
578
579	// Close the device
580	mciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
581	return(winrc);
582	}
583	/******************************************************************************/
584	/******************************************************************************/
585	void DartWaveOut::mciError(ULONG ulError)
586	{
587	#ifdef DEBUG
588	char szError[256] = "";
589
590	mciGetErrorString(ulError, szError, sizeof(szError));
591	dprintf(("WINMM: DartWaveOut: %s\n", szError));
592	#endif
593	}
594	//******************************************************************************
595	//******************************************************************************
596	BOOL DartWaveOut::find(DartWaveOut *dwave)
597	{
598	DartWaveOut *curwave = waveout;
599
600	while(curwave) {
601	if(dwave == curwave) {
602	return(TRUE);
603	}
604	curwave = curwave->next;
605	}
606
607	#ifdef DEBUG
608	// WriteLog("WINMM:DartWaveOut not found!\n");
609	#endif
610	return(FALSE);
611	}
612	/******************************************************************************/
613	/******************************************************************************/
614	void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
615	{
616	ULONG buflength;
617	WAVEHDR whdr = wavehdr, prevhdr = NULL;
618
619	#ifdef DEBUG1
620	dprintf(("WINMM: handler %d\n", curPlayBuf));
621	#endif
622	if(ulFlags == MIX_STREAM_ERROR) {
623	if(ulStatus == ERROR_DEVICE_UNDERRUN) {
624	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
625	pause(); //out of buffers, so pause playback
626	return;
627	}
628	dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
629	return;
630	}
631	wmutex->enter(VMUTEX_WAIT_FOREVER);
632
633	while(whdr) {
634	if(whdr->dwFlags & WHDR_DONE) {
635	#ifdef DEBUG1
636	dprintf(("WINMM: handler buf %X done\n", whdr));
637	#endif
638	whdr->dwFlags &= ~WHDR_INQUEUE;
639
640	if(prevhdr == NULL)
641	wavehdr = whdr->lpNext;
642	else prevhdr->lpNext = whdr->lpNext;
643
644	whdr->lpNext = NULL;
645	wmutex->leave();
646
647	if(mthdCallback) {
648	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)whdr, 0);
649	}
650	else
651	if(hwndCallback)
652	PostMessageA(hwndCallback, WOM_DONE, (ULONG)whdr, 0);
653
654	wmutex->enter(VMUTEX_WAIT_FOREVER);
655	}
656	prevhdr = whdr;
657	whdr = whdr->lpNext;
658	}
659
660	if(curhdr == NULL)
661	curhdr = wavehdr;
662
663	#ifdef DEBUG1
664	dprintf(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
665	#endif
666
667	while(curhdr) {
668	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
669	(ULONG)curhdr->dwBufferLength - curFillPos);
670	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
671	curhdr->lpData + curFillPos,
672	buflength);
673	curPlayPos += buflength;
674	curFillPos += buflength;
675	#ifdef DEBUG1
676	dprintf(("WINMM: copied %d bytes, cufFillPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curhdr->dwBufferLength));
677	#endif
678	if(curFillPos == curhdr->dwBufferLength) {
679	#ifdef DEBUG1
680	dprintf(("Buffer %d done\n", curFillBuf));
681	#endif
682	curFillPos = 0;
683	curhdr->dwFlags \|= WHDR_DONE;
684	//search for next unprocessed buffer
685	while(curhdr && curhdr->dwFlags & WHDR_DONE)
686	curhdr = curhdr->lpNext;
687	}
688	if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
689	curPlayPos = 0;
690	if(++curFillBuf == PREFILLBUF_DART) {
691	curFillBuf = 0;
692	}
693	if(curFillBuf == curPlayBuf)
694	break; //no more room left
695	}
696	}
697
698	if(curPlayBuf == PREFILLBUF_DART-1)
699	curPlayBuf = 0;
700	else curPlayBuf++;
701
702	wmutex->leave();
703	//Transfer buffer to DART
704	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
705	}
706	/******************************************************************************/
707	/******************************************************************************/
708	LONG APIENTRY WaveOutHandler(ULONG ulStatus,
709	PMCI_MIX_BUFFER pBuffer,
710	ULONG ulFlags)
711	{
712	// PTIB ptib;
713	// PPIB ppib;
714	// DosGetInfoBlocks(&ptib, &ppib);
715	// dprintf(("WaveOutHandler: thread %d prio %X", ptib->tib_ptib2->tib2_ultid, ptib->tib_ptib2->tib2_ulpri));
716
717	DartWaveOut *dwave;
718
719	if(pBuffer && pBuffer->ulUserParm)
720	{
721	dwave = (DartWaveOut *)pBuffer->ulUserParm;
722	dwave->handler(ulStatus, pBuffer, ulFlags);
723	}
724	return(TRUE);
725	}
726
727	/******************************************************************************/
728	/******************************************************************************/
729	MMRESULT DartWaveOut::setVolume(ULONG ulVol)
730	{
731	ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
732	ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
733	MCI_SET_PARMS msp = {0};
734
735	volume = ulVol;
736
737	// PD: My card (ESS 1868 PnP) driver can't change only
738	// one channel Left or Right :-(
739	//
740	#ifdef GOOD_AUDIO_CARD_DRIVER
741
742	msp.ulAudio = MCI_SET_AUDIO_LEFT;
743	msp.ulLevel = ulVolL;
744
745	mciSendCommand(DeviceId, MCI_SET,
746	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
747	&msp, 0);
748
749	msp.ulAudio = MCI_SET_AUDIO_RIGHT;
750	msp.ulLevel = ulVolR;
751
752	#else
753	msp.ulAudio = MCI_SET_AUDIO_ALL;
754	msp.ulLevel = max(ulVolR,ulVolL);
755	#endif
756
757	mciSendCommand(DeviceId, MCI_SET,
758	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
759	&msp, 0);
760	return 0;
761	}
762	/******************************************************************************/
763	/******************************************************************************/
764	DartWaveOut *DartWaveOut::waveout = NULL;
765

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