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source: trunk/src/winmm/dwaveout.cpp@ 3658

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Last change on this file since 3658 was 3658, checked in by sandervl, 25 years ago
JvdH: Clear INQUEUE flag for returned buffers in WaveOutReset
File size: 24.5 KB

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1	/* $Id: dwaveout.cpp,v 1.26 2000-06-03 16:40:52 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	wavehdr->dwFlags &= ~WHDR_INQUEUE;
491	wmutex->leave();
492	if(mthdCallback) {
493	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)wavehdr, 0);
494	}
495	else
496	if(hwndCallback) {
497	dprintf(("Callback (msg) for buffer %x", wavehdr));
498	PostMessageA(hwndCallback, WOM_DONE, (WPARAM)this, (ULONG)wavehdr);
499	}
500	wmutex->enter(VMUTEX_WAIT_FOREVER);
501	wavehdr = wavehdr->lpNext;
502	}
503	wavehdr = NULL;
504	State = STATE_STOPPED;
505	fUnderrun = FALSE;
506
507	wmutex->leave();
508	return(MMSYSERR_NOERROR);
509	}
510	/******************************************************************************/
511	/******************************************************************************/
512	MMRESULT DartWaveOut::restart()
513	{
514	int i, curbuf;
515
516	dprintf(("DartWaveOut::restart"));
517	if(State == STATE_PLAYING) {
518	return(MMSYSERR_NOERROR);
519	}
520	//Only write buffers to dart if mixer has been initialized; if not, then
521	//the first buffer write will do this for us.
522	if(fMixerSetup == TRUE) {
523	wmutex->enter(VMUTEX_WAIT_FOREVER);
524	State = STATE_PLAYING;
525	fUnderrun = FALSE;
526	wmutex->leave();
527	curbuf = curPlayBuf;
528	for(i=0;i<PREFILLBUF_DART;i++) {
529	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curbuf], 1);
530	if(++curbuf == PREFILLBUF_DART) {
531	curbuf = 0;
532	}
533	}
534	}
535	return(MMSYSERR_NOERROR);
536	}
537	/******************************************************************************/
538	/******************************************************************************/
539	ULONG DartWaveOut::getPosition()
540	{
541	MCI_STATUS_PARMS mciStatus = {0};
542	ULONG rc, nrbytes;
543
544	mciStatus.ulItem = MCI_STATUS_POSITION;
545	rc = mciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM\|MCI_WAIT, (PVOID)&mciStatus, 0);
546	if((rc & 0xFFFF) == MCIERR_SUCCESS) {
547	nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
548	return nrbytes;;
549	}
550	mciError(rc);
551	return 0xFFFFFFFF;
552	}
553	/******************************************************************************/
554	/******************************************************************************/
555	BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
556	ULONG nSamplesPerSec, ULONG wBitsPerSample)
557	{
558	MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
559	MCI_GENERIC_PARMS GenericParms;
560	MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
561	int i, freqbits = 0;
562	ULONG rc, DeviceId;
563	BOOL winrc;
564
565	dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
566
567	memset(&mciOpenParms, /* Object to fill with zeros. */
568	0, /* Value to place into the object. */
569	sizeof( mciOpenParms ) ); /* How many zero's to use. */
570
571	mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
572
573	rc = mciSendCommand( (USHORT) 0,
574	MCI_OPEN,
575	MCI_WAIT \| MCI_OPEN_TYPE_ID,
576	(PVOID) &mciOpenParms,
577	0);
578	if (rc != 0) {
579	return(FALSE);
580	}
581	DeviceId = mciOpenParms.usDeviceID;
582
583	memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
584
585	mciAudioCaps.ulBitsPerSample = wBitsPerSample;
586	mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
587	mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
588	mciAudioCaps.ulChannels = nChannels;
589	mciAudioCaps.ulFormatMode = MCI_PLAY;
590	mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
591
592	rc = mciSendCommand(DeviceId, /* Device ID */
593	MCI_GETDEVCAPS,
594	MCI_WAIT \| MCI_GETDEVCAPS_EXTENDED \| MCI_GETDEVCAPS_ITEM,
595	(PVOID) &mciAudioCaps,
596	0);
597	if((rc & 0xFFFF) != MCIERR_SUCCESS) {
598	mciError(rc);
599	winrc = FALSE;
600	}
601	else winrc = TRUE;
602
603	// Close the device
604	mciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
605	return(winrc);
606	}
607	/******************************************************************************/
608	/******************************************************************************/
609	void DartWaveOut::mciError(ULONG ulError)
610	{
611	#ifdef DEBUG
612	char szError[256] = "";
613
614	mciGetErrorString(ulError, szError, sizeof(szError));
615	dprintf(("WINMM: DartWaveOut: %s\n", szError));
616	#endif
617	}
618	//******************************************************************************
619	//******************************************************************************
620	BOOL DartWaveOut::find(DartWaveOut *dwave)
621	{
622	DartWaveOut *curwave = waveout;
623
624	while(curwave) {
625	if(dwave == curwave) {
626	return(TRUE);
627	}
628	curwave = curwave->next;
629	}
630
631	#ifdef DEBUG
632	// WriteLog("WINMM:DartWaveOut not found!\n");
633	#endif
634	return(FALSE);
635	}
636	/******************************************************************************/
637	/******************************************************************************/
638	void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
639	{
640	ULONG buflength;
641	WAVEHDR whdr, prevhdr = NULL;
642
643	#ifdef DEBUG1
644	dprintf(("WINMM: handler %d\n", curPlayBuf));
645	#endif
646	if(ulFlags == MIX_STREAM_ERROR) {
647	if(ulStatus == ERROR_DEVICE_UNDERRUN) {
648	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
649	if(State == STATE_PLAYING) {
650	fUnderrun = TRUE;
651	pause(); //out of buffers, so pause playback
652	}
653	return;
654	}
655	dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
656	return;
657	}
658	wmutex->enter(VMUTEX_WAIT_FOREVER);
659
660	whdr = wavehdr;
661	if(whdr == NULL) {
662	wmutex->leave();
663	//last buffer played -> no new ones -> underrun; pause playback
664	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
665	if(State == STATE_PLAYING) {
666	fUnderrun = TRUE;
667	pause(); //out of buffers, so pause playback
668	}
669	return;
670	}
671	while(whdr) {
672	if(whdr->dwFlags & WHDR_DONE) {
673	#ifdef DEBUG1
674	dprintf(("WINMM: handler buf %X done\n", whdr));
675	#endif
676	whdr->dwFlags &= ~WHDR_INQUEUE;
677
678	if(prevhdr == NULL)
679	wavehdr = whdr->lpNext;
680	else prevhdr->lpNext = whdr->lpNext;
681
682	whdr->lpNext = NULL;
683	wmutex->leave();
684
685	if(mthdCallback) {
686	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)whdr, 0);
687	}
688	else
689	if(hwndCallback) {
690	dprintf(("Callback (msg) for buffer %x", whdr));
691	PostMessageA(hwndCallback, WOM_DONE, (WPARAM)this, (ULONG)whdr);
692	}
693
694	wmutex->enter(VMUTEX_WAIT_FOREVER);
695	}
696	prevhdr = whdr;
697	whdr = whdr->lpNext;
698	}
699
700	if(curhdr == NULL)
701	curhdr = wavehdr;
702
703	#ifdef DEBUG1
704	dprintf(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
705	#endif
706
707	while(curhdr) {
708	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
709	(ULONG)curhdr->dwBufferLength - curFillPos);
710	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
711	curhdr->lpData + curFillPos,
712	buflength);
713	curPlayPos += buflength;
714	curFillPos += buflength;
715	#ifdef DEBUG1
716	dprintf(("WINMM: copied %d bytes, cufFillPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curhdr->dwBufferLength));
717	#endif
718	if(curFillPos == curhdr->dwBufferLength) {
719	#ifdef DEBUG1
720	dprintf(("Buffer %d done\n", curFillBuf));
721	#endif
722	curFillPos = 0;
723	curhdr->dwFlags \|= WHDR_DONE;
724	//search for next unprocessed buffer
725	while(curhdr && curhdr->dwFlags & WHDR_DONE)
726	curhdr = curhdr->lpNext;
727	}
728	if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
729	curPlayPos = 0;
730	if(++curFillBuf == PREFILLBUF_DART) {
731	curFillBuf = 0;
732	}
733	if(curFillBuf == curPlayBuf)
734	break; //no more room left
735	}
736	}
737
738	if(curPlayBuf == PREFILLBUF_DART-1)
739	curPlayBuf = 0;
740	else curPlayBuf++;
741
742	wmutex->leave();
743	//Transfer buffer to DART
744	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
745	}
746	/******************************************************************************/
747	/******************************************************************************/
748	LONG APIENTRY WaveOutHandler(ULONG ulStatus,
749	PMCI_MIX_BUFFER pBuffer,
750	ULONG ulFlags)
751	{
752	// PTIB ptib;
753	// PPIB ppib;
754	// DosGetInfoBlocks(&ptib, &ppib);
755	// dprintf(("WaveOutHandler: thread %d prio %X", ptib->tib_ptib2->tib2_ultid, ptib->tib_ptib2->tib2_ulpri));
756
757	DartWaveOut *dwave;
758
759	if(pBuffer && pBuffer->ulUserParm)
760	{
761	dwave = (DartWaveOut *)pBuffer->ulUserParm;
762	dwave->handler(ulStatus, pBuffer, ulFlags);
763	}
764	return(TRUE);
765	}
766
767	/******************************************************************************/
768	/******************************************************************************/
769	MMRESULT DartWaveOut::setVolume(ULONG ulVol)
770	{
771	ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
772	ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
773	MCI_SET_PARMS msp = {0};
774
775	volume = ulVol;
776
777	// PD: My card (ESS 1868 PnP) driver can't change only
778	// one channel Left or Right :-(
779	//
780	#ifdef GOOD_AUDIO_CARD_DRIVER
781
782	msp.ulAudio = MCI_SET_AUDIO_LEFT;
783	msp.ulLevel = ulVolL;
784
785	mciSendCommand(DeviceId, MCI_SET,
786	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
787	&msp, 0);
788
789	msp.ulAudio = MCI_SET_AUDIO_RIGHT;
790	msp.ulLevel = ulVolR;
791
792	#else
793	msp.ulAudio = MCI_SET_AUDIO_ALL;
794	msp.ulLevel = max(ulVolR,ulVolL);
795	#endif
796
797	mciSendCommand(DeviceId, MCI_SET,
798	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
799	&msp, 0);
800	return 0;
801	}
802	/******************************************************************************/
803	/******************************************************************************/
804	DartWaveOut *DartWaveOut::waveout = NULL;
805

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