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source: trunk/src/winmm/dwaveout.cpp@ 3363

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Last change on this file since 3363 was 3357, checked in by sandervl, 26 years ago
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File size: 24.2 KB

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1	/* $Id: dwaveout.cpp,v 1.24 2000-04-09 11:29:07 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	fUnderrun = FALSE;
63
64	if(!ulError)
65	callback((ULONG)this, WOM_OPEN, dwInstance, 0, 0);
66	}
67	/******************************************************************************/
68	/******************************************************************************/
69	DartWaveOut::DartWaveOut(LPWAVEFORMATEX pwfx, HWND hwndCallback)
70	{
71	Init(pwfx);
72
73	this->hwndCallback = hwndCallback;
74
75	if(!ulError)
76	PostMessageA(hwndCallback, WOM_OPEN, 0, 0);
77	}
78	/******************************************************************************/
79	/******************************************************************************/
80	void DartWaveOut::callback(HDRVR h, UINT uMessage, DWORD dwUser, DWORD dw1, DWORD dw2)
81	{
82	USHORT selTIB = GetFS(); // save current FS selector
83
84	dprintf(("WINMM:DartWaveOut::callback(HDRVR h=%08xh, UINT uMessage=%08xh, DWORD dwUser=%08xh, DWORD dw1=%08xh, DWORD dw2=%08xh)\n",
85	h,
86	uMessage,
87	dwUser,
88	dw1,
89	dw2));
90
91	if (selCallback != 0)
92	SetFS(selCallback); // switch to callback win32 tib selector (stored in waveOutOpen)
93	else
94	dprintf(("WINMM:DartWaveOut::callback - selCallback is invalid"));
95
96	//@@@PH 1999/12/28 Shockwave Flashes seem to make assumptions on a
97	// specific stack layout. Do we have the correct calling convention here?
98	mthdCallback(h,uMessage,dwUser,dw1,dw2);
99	SetFS(selTIB); // switch back to the saved FS selector
100	}
101	/******************************************************************************/
102	/******************************************************************************/
103	void DartWaveOut::Init(LPWAVEFORMATEX pwfx)
104	{
105	MCI_GENERIC_PARMS GenericParms;
106	MCI_AMP_OPEN_PARMS AmpOpenParms;
107	APIRET rc;
108
109	curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
110
111	fMixerSetup = FALSE;
112	next = NULL;
113	wavehdr = NULL;
114	curhdr = NULL;
115	mthdCallback = NULL;
116	hwndCallback = 0;
117	selCallback = 0;
118	dwInstance = 0;
119	ulError = 0;
120	selCallback = 0;
121	volume = 0xFFFFFFFF;
122	State = STATE_STOPPED;
123
124	MixBuffer = (MCI_MIX_BUFFER )malloc(PREFILLBUF_DARTsizeof(MCI_MIX_BUFFER));
125	MixSetupParms = (MCI_MIXSETUP_PARMS *)malloc(sizeof(MCI_MIXSETUP_PARMS));
126	BufferParms = (MCI_BUFFER_PARMS *)malloc(sizeof(MCI_BUFFER_PARMS));
127
128	BitsPerSample = pwfx->wBitsPerSample;
129	SampleRate = pwfx->nSamplesPerSec;
130	this->nChannels = pwfx->nChannels;
131	ulBufSize = DART_BUFSIZE;
132
133	dprintf(("waveOutOpen: samplerate %d, numChan %d bps %d (%d), format %x", SampleRate, nChannels, BitsPerSample, pwfx->nBlockAlign, pwfx->wFormatTag));
134	// Setup the open structure, pass the playlist and tell MCI_OPEN to use it
135	memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
136
137	AmpOpenParms.usDeviceID = ( USHORT ) 0;
138	AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
139
140	rc = mciSendCommand(0, MCI_OPEN,
141	MCI_WAIT \| MCI_OPEN_TYPE_ID \| MCI_OPEN_SHAREABLE,
142	(PVOID) &AmpOpenParms,
143	0);
144	DeviceId = AmpOpenParms.usDeviceID;
145	if(rc) {
146	dprintf(("MCI_OPEN failed\n"));
147	mciError(rc);
148	ulError = MMSYSERR_NODRIVER;
149	}
150	if(rc == 0) {
151	//Grab exclusive rights to device instance (NOT entire device)
152	GenericParms.hwndCallback = 0; //Not needed, so set to 0
153	rc = mciSendCommand(DeviceId, MCI_ACQUIREDEVICE, MCI_EXCLUSIVE_INSTANCE,
154	(PVOID)&GenericParms, 0);
155	if(rc) {
156	dprintf(("MCI_ACQUIREDEVICE failed\n"));
157	mciError(rc);
158	ulError = MMSYSERR_NOTENABLED;
159	}
160	}
161	State = STATE_STOPPED;
162
163	setVolume(volume);
164
165	wmutex = new VMutex();
166	if(wmutex == NULL) {
167	ulError = MMSYSERR_NOTSUPPORTED;
168	}
169	if(wmutex)
170	wmutex->enter(VMUTEX_WAIT_FOREVER);
171
172	if(waveout == NULL) {
173	waveout = this;
174	}
175	else {
176	DartWaveOut *dwave = waveout;
177
178	while(dwave->next) {
179	dwave = dwave->next;
180	}
181	dwave->next = this;
182	}
183
184	if(wmutex)
185	wmutex->leave();
186	}
187	/******************************************************************************/
188	/******************************************************************************/
189	DartWaveOut::~DartWaveOut()
190	{
191	MCI_GENERIC_PARMS GenericParms;
192
193	if(!ulError) {
194	// Generic parameters
195	GenericParms.hwndCallback = 0; //hwndFrame
196
197	// Stop the playback.
198	mciSendCommand(DeviceId, MCI_STOP,MCI_WAIT, (PVOID)&GenericParms,0);
199
200	mciSendCommand(DeviceId,
201	MCI_BUFFER,
202	MCI_WAIT \| MCI_DEALLOCATE_MEMORY,
203	(PVOID)&BufferParms,
204	0);
205
206	// Generic parameters
207	GenericParms.hwndCallback = 0; //hwndFrame
208
209	// Close the device
210	mciSendCommand(DeviceId, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
211	}
212
213	if(wmutex)
214	wmutex->enter(VMUTEX_WAIT_FOREVER);
215
216	State = STATE_STOPPED;
217
218	if(waveout == this) {
219	waveout = this->next;
220	}
221	else {
222	DartWaveOut *dwave = waveout;
223
224	while(dwave->next != this) {
225	dwave = dwave->next;
226	}
227	dwave->next = this->next;
228	}
229	if(wmutex)
230	wmutex->leave();
231
232	if(!ulError) {
233	if(mthdCallback) {
234	callback((ULONG)this, WOM_CLOSE, dwInstance, 0, 0);
235	}
236	else
237	if(hwndCallback)
238	PostMessageA(hwndCallback, WOM_CLOSE, 0, 0);
239	}
240
241	if(wmutex)
242	delete wmutex;
243
244	if(MixBuffer)
245	free(MixBuffer);
246	if(MixSetupParms)
247	free(MixSetupParms);
248	if(BufferParms)
249	free(BufferParms);
250	}
251	/******************************************************************************/
252	/******************************************************************************/
253	MMRESULT DartWaveOut::getError()
254	{
255	return(ulError);
256	}
257	/******************************************************************************/
258	/******************************************************************************/
259	int DartWaveOut::getNumDevices()
260	{
261	MCI_GENERIC_PARMS GenericParms;
262	MCI_AMP_OPEN_PARMS AmpOpenParms;
263	APIRET rc;
264
265	// Setup the open structure, pass the playlist and tell MCI_OPEN to use it
266	memset(&AmpOpenParms,0,sizeof(AmpOpenParms));
267
268	AmpOpenParms.usDeviceID = ( USHORT ) 0;
269	AmpOpenParms.pszDeviceType = ( PSZ ) MCI_DEVTYPE_AUDIO_AMPMIX;
270
271	rc = mciSendCommand(0, MCI_OPEN,
272	MCI_WAIT \| MCI_OPEN_TYPE_ID \| MCI_OPEN_SHAREABLE,
273	(PVOID) &AmpOpenParms,
274	0);
275
276	if(rc) {
277	return 0; //no devices present
278	}
279
280	// Generic parameters
281	GenericParms.hwndCallback = 0; //hwndFrame
282
283	// Close the device
284	mciSendCommand(AmpOpenParms.usDeviceID, MCI_CLOSE, MCI_WAIT, (PVOID)&GenericParms, 0);
285
286	return 1;
287	}
288	/******************************************************************************/
289	/******************************************************************************/
290	MMRESULT DartWaveOut::write(LPWAVEHDR pwh, UINT cbwh)
291	{
292	MCI_GENERIC_PARMS GenericParms = {0};
293	APIRET rc;
294	int i, buflength;
295
296	if(fMixerSetup == FALSE)
297	{
298	dprintf(("device acquired\n"));
299	/* Set the MixSetupParms data structure to match the loaded file.
300	* This is a global that is used to setup the mixer.
301	*/
302	memset(MixSetupParms, 0, sizeof( MCI_MIXSETUP_PARMS ) );
303
304	MixSetupParms->ulBitsPerSample = BitsPerSample;
305	MixSetupParms->ulSamplesPerSec = SampleRate;
306	MixSetupParms->ulFormatTag = MCI_WAVE_FORMAT_PCM;
307	MixSetupParms->ulChannels = nChannels;
308
309	dprintf(("bps %d, sps %d chan %d\n", BitsPerSample, SampleRate, nChannels));
310
311	/* Setup the mixer for playback of wave data
312	*/
313	MixSetupParms->ulFormatMode = MCI_PLAY;
314	MixSetupParms->ulDeviceType = MCI_DEVTYPE_WAVEFORM_AUDIO;
315	MixSetupParms->pmixEvent = WaveOutHandler;
316
317	rc = mciSendCommand(DeviceId,
318	MCI_MIXSETUP,
319	MCI_WAIT \| MCI_MIXSETUP_INIT,
320	(PVOID)MixSetupParms,
321	0);
322
323	if ( rc != MCIERR_SUCCESS ) {
324	mciError(rc);
325	mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
326	(PVOID)&GenericParms, 0);
327	return(MMSYSERR_NOTSUPPORTED);
328	}
329
330	/*
331	* Set up the BufferParms data structure and allocate
332	* device buffers from the Amp-Mixer
333	*/
334	dprintf(("mix setup %d, %d\n", pwh->dwBufferLength, pwh->dwBufferLength));
335
336	#if 1
337	ulBufSize = pwh->dwBufferLength/2;
338	if(ulBufSize < 128) {
339	dprintf(("set buffer size to 128 bytes (org size = %d)", pwh->dwBufferLength));
340	ulBufSize = 128;
341	}
342	#else
343	if(pwh->dwBufferLength >= 512 && pwh->dwBufferLength <= 1024)
344	ulBufSize = pwh->dwBufferLength;
345	else ulBufSize = 1024;
346	#endif
347
348	MixSetupParms->ulBufferSize = ulBufSize;
349
350	BufferParms->ulNumBuffers = PREFILLBUF_DART;
351	BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
352	BufferParms->pBufList = MixBuffer;
353
354	for(i=0;i<PREFILLBUF_DART;i++) {
355	MixBuffer[i].ulUserParm = (ULONG)this;
356	}
357
358	rc = mciSendCommand(DeviceId,
359	MCI_BUFFER,
360	MCI_WAIT \| MCI_ALLOCATE_MEMORY,
361	(PVOID)BufferParms,
362	0);
363
364	if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
365	mciError(rc);
366	mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
367	(PVOID)&GenericParms, 0);
368	return(MMSYSERR_NOTSUPPORTED);
369	}
370
371	wmutex->enter(VMUTEX_WAIT_FOREVER);
372	fMixerSetup = TRUE;
373
374	curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
375
376	for(i=0;i<PREFILLBUF_DART;i++) {
377	memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
378	}
379	dprintf(("Dart opened, bufsize = %d\n", MixBuffer[0].ulBufferLength));
380
381	wavehdr = pwh;
382	curhdr = pwh;
383	pwh->lpNext = NULL;
384
385	if(State != STATE_STOPPED) {//don't start playback if paused
386	wmutex->leave();
387	return(MMSYSERR_NOERROR);
388	}
389
390	while(TRUE) {
391	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
392	(ULONG)wavehdr->dwBufferLength - curFillPos);
393	dprintf(("Copying %d data; curPlayPos = %d curFillPos = %d\n", buflength, curPlayPos, curFillPos));
394
395	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
396	wavehdr->lpData + curFillPos,
397	buflength);
398
399	curPlayPos += buflength;
400	curFillPos += buflength;
401	if(curFillPos == wavehdr->dwBufferLength) {
402	dprintf(("Processed first win32 buffer\n"));
403	curFillPos = 0;
404	wavehdr->dwFlags \|= WHDR_DONE;
405	curhdr = NULL;
406	}
407	if(curPlayPos == MixBuffer[curPlayBuf].ulBufferLength) {
408	if(++curPlayBuf == PREFILLBUF_DART) {
409	curPlayBuf = 0;
410	break;
411	}
412	curPlayPos = 0;
413	}
414	if(curFillPos == 0)
415	break;
416	}
417	dprintf(("MixSetupParms = %X\n", MixSetupParms));
418	State = STATE_PLAYING;
419	fUnderrun = FALSE;
420	wmutex->leave();
421
422	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
423	MixBuffer,
424	PREFILLBUF_DART);
425	dprintf(("Dart playing\n"));
426	}
427	else
428	{
429	wmutex->enter(VMUTEX_WAIT_FOREVER);
430	pwh->lpNext = NULL;
431	if(wavehdr) {
432	WAVEHDR *chdr = wavehdr;
433	while(chdr->lpNext) {
434	chdr = chdr->lpNext;
435	}
436	chdr->lpNext = pwh;
437	}
438	else wavehdr = pwh;
439	wmutex->leave();
440	if(State == STATE_STOPPED) {//continue playback
441	restart();
442	}
443	}
444
445	return(MMSYSERR_NOERROR);
446	}
447	/******************************************************************************/
448	/******************************************************************************/
449	MMRESULT DartWaveOut::pause()
450	{
451	MCI_GENERIC_PARMS Params;
452
453	wmutex->enter(VMUTEX_WAIT_FOREVER);
454	if(State != STATE_PLAYING) {
455	State = STATE_PAUSED;
456	wmutex->leave();
457	return(MMSYSERR_NOERROR);
458	}
459
460	State = STATE_PAUSED;
461	wmutex->leave();
462
463	memset(&Params, 0, sizeof(Params));
464
465	// Stop the playback.
466	mciSendCommand(DeviceId, MCI_PAUSE, MCI_WAIT, (PVOID)&Params, 0);
467
468	return(MMSYSERR_NOERROR);
469	}
470	/******************************************************************************/
471	/******************************************************************************/
472	MMRESULT DartWaveOut::reset()
473	{
474	MCI_GENERIC_PARMS Params;
475
476	dprintf(("DartWaveOut::reset %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
477	if(State != STATE_PLAYING)
478	return(MMSYSERR_HANDLEBUSY);
479
480	memset(&Params, 0, sizeof(Params));
481
482	// Stop the playback.
483	mciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
484
485	dprintf(("Nr of threads blocked on mutex = %d\n", wmutex->getNrBlocked()));
486
487	wmutex->enter(VMUTEX_WAIT_FOREVER);
488	while(wavehdr) {
489	wavehdr->dwFlags \|= WHDR_DONE;
490	wmutex->leave();
491	if(mthdCallback) {
492	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)wavehdr, 0);
493	}
494	else
495	if(hwndCallback) {
496	dprintf(("Callback (msg) for buffer %x", wavehdr));
497	PostMessageA(hwndCallback, WOM_DONE, (WPARAM)this, (ULONG)wavehdr);
498	}
499	wmutex->enter(VMUTEX_WAIT_FOREVER);
500	wavehdr = wavehdr->lpNext;
501	}
502	wavehdr = NULL;
503	State = STATE_STOPPED;
504	fUnderrun = FALSE;
505
506	wmutex->leave();
507	return(MMSYSERR_NOERROR);
508	}
509	/******************************************************************************/
510	/******************************************************************************/
511	MMRESULT DartWaveOut::restart()
512	{
513	int i, curbuf;
514
515	dprintf(("DartWaveOut::restart"));
516	if(State == STATE_PLAYING) {
517	return(MMSYSERR_NOERROR);
518	}
519	wmutex->enter(VMUTEX_WAIT_FOREVER);
520	State = STATE_PLAYING;
521	fUnderrun = FALSE;
522	wmutex->leave();
523	curbuf = curPlayBuf;
524	for(i=0;i<PREFILLBUF_DART;i++) {
525	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curbuf], 1);
526	if(++curbuf == PREFILLBUF_DART) {
527	curbuf = 0;
528	}
529	}
530	return(MMSYSERR_NOERROR);
531	}
532	/******************************************************************************/
533	/******************************************************************************/
534	ULONG DartWaveOut::getPosition()
535	{
536	MCI_STATUS_PARMS mciStatus = {0};
537	ULONG rc, nrbytes;
538
539	mciStatus.ulItem = MCI_STATUS_POSITION;
540	rc = mciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM\|MCI_WAIT, (PVOID)&mciStatus, 0);
541	if((rc & 0xFFFF) == MCIERR_SUCCESS) {
542	nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
543	return nrbytes;;
544	}
545	mciError(rc);
546	return 0xFFFFFFFF;
547	}
548	/******************************************************************************/
549	/******************************************************************************/
550	BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
551	ULONG nSamplesPerSec, ULONG wBitsPerSample)
552	{
553	MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
554	MCI_GENERIC_PARMS GenericParms;
555	MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
556	int i, freqbits = 0;
557	ULONG rc, DeviceId;
558	BOOL winrc;
559
560	dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
561
562	memset(&mciOpenParms, /* Object to fill with zeros. */
563	0, /* Value to place into the object. */
564	sizeof( mciOpenParms ) ); /* How many zero's to use. */
565
566	mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
567
568	rc = mciSendCommand( (USHORT) 0,
569	MCI_OPEN,
570	MCI_WAIT \| MCI_OPEN_TYPE_ID,
571	(PVOID) &mciOpenParms,
572	0);
573	if (rc != 0) {
574	return(FALSE);
575	}
576	DeviceId = mciOpenParms.usDeviceID;
577
578	memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
579
580	mciAudioCaps.ulBitsPerSample = wBitsPerSample;
581	mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
582	mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
583	mciAudioCaps.ulChannels = nChannels;
584	mciAudioCaps.ulFormatMode = MCI_PLAY;
585	mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
586
587	rc = mciSendCommand(DeviceId, /* Device ID */
588	MCI_GETDEVCAPS,
589	MCI_WAIT \| MCI_GETDEVCAPS_EXTENDED \| MCI_GETDEVCAPS_ITEM,
590	(PVOID) &mciAudioCaps,
591	0);
592	if((rc & 0xFFFF) != MCIERR_SUCCESS) {
593	mciError(rc);
594	winrc = FALSE;
595	}
596	else winrc = TRUE;
597
598	// Close the device
599	mciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
600	return(winrc);
601	}
602	/******************************************************************************/
603	/******************************************************************************/
604	void DartWaveOut::mciError(ULONG ulError)
605	{
606	#ifdef DEBUG
607	char szError[256] = "";
608
609	mciGetErrorString(ulError, szError, sizeof(szError));
610	dprintf(("WINMM: DartWaveOut: %s\n", szError));
611	#endif
612	}
613	//******************************************************************************
614	//******************************************************************************
615	BOOL DartWaveOut::find(DartWaveOut *dwave)
616	{
617	DartWaveOut *curwave = waveout;
618
619	while(curwave) {
620	if(dwave == curwave) {
621	return(TRUE);
622	}
623	curwave = curwave->next;
624	}
625
626	#ifdef DEBUG
627	// WriteLog("WINMM:DartWaveOut not found!\n");
628	#endif
629	return(FALSE);
630	}
631	/******************************************************************************/
632	/******************************************************************************/
633	void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
634	{
635	ULONG buflength;
636	WAVEHDR whdr, prevhdr = NULL;
637
638	#ifdef DEBUG1
639	dprintf(("WINMM: handler %d\n", curPlayBuf));
640	#endif
641	if(ulFlags == MIX_STREAM_ERROR) {
642	if(ulStatus == ERROR_DEVICE_UNDERRUN) {
643	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
644	if(State == STATE_PLAYING) {
645	fUnderrun = TRUE;
646	pause(); //out of buffers, so pause playback
647	}
648	return;
649	}
650	dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
651	return;
652	}
653	wmutex->enter(VMUTEX_WAIT_FOREVER);
654
655	whdr = wavehdr;
656	if(whdr == NULL) {
657	wmutex->leave();
658	//last buffer played -> no new ones -> underrun; pause playback
659	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
660	if(State == STATE_PLAYING) {
661	fUnderrun = TRUE;
662	pause(); //out of buffers, so pause playback
663	}
664	return;
665	}
666	while(whdr) {
667	if(whdr->dwFlags & WHDR_DONE) {
668	#ifdef DEBUG1
669	dprintf(("WINMM: handler buf %X done\n", whdr));
670	#endif
671	whdr->dwFlags &= ~WHDR_INQUEUE;
672
673	if(prevhdr == NULL)
674	wavehdr = whdr->lpNext;
675	else prevhdr->lpNext = whdr->lpNext;
676
677	whdr->lpNext = NULL;
678	wmutex->leave();
679
680	if(mthdCallback) {
681	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)whdr, 0);
682	}
683	else
684	if(hwndCallback) {
685	dprintf(("Callback (msg) for buffer %x", whdr));
686	PostMessageA(hwndCallback, WOM_DONE, (WPARAM)this, (ULONG)whdr);
687	}
688
689	wmutex->enter(VMUTEX_WAIT_FOREVER);
690	}
691	prevhdr = whdr;
692	whdr = whdr->lpNext;
693	}
694
695	if(curhdr == NULL)
696	curhdr = wavehdr;
697
698	#ifdef DEBUG1
699	dprintf(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
700	#endif
701
702	while(curhdr) {
703	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
704	(ULONG)curhdr->dwBufferLength - curFillPos);
705	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
706	curhdr->lpData + curFillPos,
707	buflength);
708	curPlayPos += buflength;
709	curFillPos += buflength;
710	#ifdef DEBUG1
711	dprintf(("WINMM: copied %d bytes, cufFillPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curhdr->dwBufferLength));
712	#endif
713	if(curFillPos == curhdr->dwBufferLength) {
714	#ifdef DEBUG1
715	dprintf(("Buffer %d done\n", curFillBuf));
716	#endif
717	curFillPos = 0;
718	curhdr->dwFlags \|= WHDR_DONE;
719	//search for next unprocessed buffer
720	while(curhdr && curhdr->dwFlags & WHDR_DONE)
721	curhdr = curhdr->lpNext;
722	}
723	if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
724	curPlayPos = 0;
725	if(++curFillBuf == PREFILLBUF_DART) {
726	curFillBuf = 0;
727	}
728	if(curFillBuf == curPlayBuf)
729	break; //no more room left
730	}
731	}
732
733	if(curPlayBuf == PREFILLBUF_DART-1)
734	curPlayBuf = 0;
735	else curPlayBuf++;
736
737	wmutex->leave();
738	//Transfer buffer to DART
739	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
740	}
741	/******************************************************************************/
742	/******************************************************************************/
743	LONG APIENTRY WaveOutHandler(ULONG ulStatus,
744	PMCI_MIX_BUFFER pBuffer,
745	ULONG ulFlags)
746	{
747	// PTIB ptib;
748	// PPIB ppib;
749	// DosGetInfoBlocks(&ptib, &ppib);
750	// dprintf(("WaveOutHandler: thread %d prio %X", ptib->tib_ptib2->tib2_ultid, ptib->tib_ptib2->tib2_ulpri));
751
752	DartWaveOut *dwave;
753
754	if(pBuffer && pBuffer->ulUserParm)
755	{
756	dwave = (DartWaveOut *)pBuffer->ulUserParm;
757	dwave->handler(ulStatus, pBuffer, ulFlags);
758	}
759	return(TRUE);
760	}
761
762	/******************************************************************************/
763	/******************************************************************************/
764	MMRESULT DartWaveOut::setVolume(ULONG ulVol)
765	{
766	ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
767	ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
768	MCI_SET_PARMS msp = {0};
769
770	volume = ulVol;
771
772	// PD: My card (ESS 1868 PnP) driver can't change only
773	// one channel Left or Right :-(
774	//
775	#ifdef GOOD_AUDIO_CARD_DRIVER
776
777	msp.ulAudio = MCI_SET_AUDIO_LEFT;
778	msp.ulLevel = ulVolL;
779
780	mciSendCommand(DeviceId, MCI_SET,
781	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
782	&msp, 0);
783
784	msp.ulAudio = MCI_SET_AUDIO_RIGHT;
785	msp.ulLevel = ulVolR;
786
787	#else
788	msp.ulAudio = MCI_SET_AUDIO_ALL;
789	msp.ulLevel = max(ulVolR,ulVolL);
790	#endif
791
792	mciSendCommand(DeviceId, MCI_SET,
793	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
794	&msp, 0);
795	return 0;
796	}
797	/******************************************************************************/
798	/******************************************************************************/
799	DartWaveOut *DartWaveOut::waveout = NULL;
800

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