Context Navigation

source: trunk/src/winmm/dwaveout.cpp@ 3831

Visit:

Last change on this file since 3831 was 3780, checked in by sandervl, 25 years ago
MN: resume on underrun & min. buffer size fixes
File size: 24.6 KB

Line
1	/* $Id: dwaveout.cpp,v 1.27 2000-06-30 08:40:05 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	int consumerate = getAvgBytesPerSecond();
338	int minbufsize = consumerate/32;
339
340	ulBufSize = pwh->dwBufferLength/2;
341	if(ulBufSize < minbufsize) {
342	dprintf(("set buffer size to %d bytes (org size = %d)", minbufsize, pwh->dwBufferLength));
343	ulBufSize = minbufsize;
344	}
345	#else
346	if(pwh->dwBufferLength >= 512 && pwh->dwBufferLength <= 1024)
347	ulBufSize = pwh->dwBufferLength;
348	else ulBufSize = 1024;
349	#endif
350
351	MixSetupParms->ulBufferSize = ulBufSize;
352
353	BufferParms->ulNumBuffers = PREFILLBUF_DART;
354	BufferParms->ulBufferSize = MixSetupParms->ulBufferSize;
355	BufferParms->pBufList = MixBuffer;
356
357	for(i=0;i<PREFILLBUF_DART;i++) {
358	MixBuffer[i].ulUserParm = (ULONG)this;
359	}
360
361	rc = mciSendCommand(DeviceId,
362	MCI_BUFFER,
363	MCI_WAIT \| MCI_ALLOCATE_MEMORY,
364	(PVOID)BufferParms,
365	0);
366
367	if(ULONG_LOWD(rc) != MCIERR_SUCCESS) {
368	mciError(rc);
369	mciSendCommand(DeviceId, MCI_RELEASEDEVICE, MCI_WAIT,
370	(PVOID)&GenericParms, 0);
371	return(MMSYSERR_NOTSUPPORTED);
372	}
373
374	wmutex->enter(VMUTEX_WAIT_FOREVER);
375	fMixerSetup = TRUE;
376
377	curPlayBuf = curFillBuf = curFillPos = curPlayPos = 0;
378
379	for(i=0;i<PREFILLBUF_DART;i++) {
380	memset(MixBuffer[i].pBuffer, 0, MixBuffer[i].ulBufferLength);
381	}
382	dprintf(("Dart opened, bufsize = %d\n", MixBuffer[0].ulBufferLength));
383
384	wavehdr = pwh;
385	curhdr = pwh;
386	pwh->lpNext = NULL;
387
388	if(State != STATE_STOPPED) {//don't start playback if paused
389	wmutex->leave();
390	return(MMSYSERR_NOERROR);
391	}
392
393	while(TRUE) {
394	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
395	(ULONG)wavehdr->dwBufferLength - curFillPos);
396	dprintf(("Copying %d data; curPlayPos = %d curFillPos = %d\n", buflength, curPlayPos, curFillPos));
397
398	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
399	wavehdr->lpData + curFillPos,
400	buflength);
401
402	curPlayPos += buflength;
403	curFillPos += buflength;
404	if(curFillPos == wavehdr->dwBufferLength) {
405	dprintf(("Processed first win32 buffer\n"));
406	curFillPos = 0;
407	wavehdr->dwFlags \|= WHDR_DONE;
408	curhdr = NULL;
409	}
410	if(curPlayPos == MixBuffer[curPlayBuf].ulBufferLength) {
411	if(++curPlayBuf == PREFILLBUF_DART) {
412	curPlayBuf = 0;
413	break;
414	}
415	curPlayPos = 0;
416	}
417	if(curFillPos == 0)
418	break;
419	}
420	dprintf(("MixSetupParms = %X\n", MixSetupParms));
421	State = STATE_PLAYING;
422	fUnderrun = FALSE;
423	wmutex->leave();
424
425	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle,
426	MixBuffer,
427	PREFILLBUF_DART);
428	dprintf(("Dart playing\n"));
429	}
430	else
431	{
432	wmutex->enter(VMUTEX_WAIT_FOREVER);
433	pwh->lpNext = NULL;
434	if(wavehdr) {
435	WAVEHDR *chdr = wavehdr;
436	while(chdr->lpNext) {
437	chdr = chdr->lpNext;
438	}
439	chdr->lpNext = pwh;
440	}
441	else wavehdr = pwh;
442	wmutex->leave();
443	if(State == STATE_STOPPED \|\| fUnderrun) {//continue playback
444	restart();
445	}
446	}
447
448	return(MMSYSERR_NOERROR);
449	}
450	/******************************************************************************/
451	/******************************************************************************/
452	MMRESULT DartWaveOut::pause()
453	{
454	MCI_GENERIC_PARMS Params;
455
456	wmutex->enter(VMUTEX_WAIT_FOREVER);
457	if(State != STATE_PLAYING) {
458	State = STATE_PAUSED;
459	wmutex->leave();
460	return(MMSYSERR_NOERROR);
461	}
462
463	State = STATE_PAUSED;
464	wmutex->leave();
465
466	memset(&Params, 0, sizeof(Params));
467
468	// Stop the playback.
469	mciSendCommand(DeviceId, MCI_PAUSE, MCI_WAIT, (PVOID)&Params, 0);
470
471	return(MMSYSERR_NOERROR);
472	}
473	/******************************************************************************/
474	/******************************************************************************/
475	MMRESULT DartWaveOut::reset()
476	{
477	MCI_GENERIC_PARMS Params;
478
479	dprintf(("DartWaveOut::reset %s", (State == STATE_PLAYING) ? "playing" : "stopped"));
480	if(State != STATE_PLAYING)
481	return(MMSYSERR_HANDLEBUSY);
482
483	memset(&Params, 0, sizeof(Params));
484
485	// Stop the playback.
486	mciSendCommand(DeviceId, MCI_STOP, MCI_WAIT, (PVOID)&Params, 0);
487
488	dprintf(("Nr of threads blocked on mutex = %d\n", wmutex->getNrBlocked()));
489
490	wmutex->enter(VMUTEX_WAIT_FOREVER);
491	while(wavehdr) {
492	wavehdr->dwFlags \|= WHDR_DONE;
493	wavehdr->dwFlags &= ~WHDR_INQUEUE;
494	wmutex->leave();
495	if(mthdCallback) {
496	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)wavehdr, 0);
497	}
498	else
499	if(hwndCallback) {
500	dprintf(("Callback (msg) for buffer %x", wavehdr));
501	PostMessageA(hwndCallback, WOM_DONE, (WPARAM)this, (ULONG)wavehdr);
502	}
503	wmutex->enter(VMUTEX_WAIT_FOREVER);
504	wavehdr = wavehdr->lpNext;
505	}
506	wavehdr = NULL;
507	State = STATE_STOPPED;
508	fUnderrun = FALSE;
509
510	wmutex->leave();
511	return(MMSYSERR_NOERROR);
512	}
513	/******************************************************************************/
514	/******************************************************************************/
515	MMRESULT DartWaveOut::restart()
516	{
517	int i, curbuf;
518
519	dprintf(("DartWaveOut::restart"));
520	if(State == STATE_PLAYING) {
521	return(MMSYSERR_NOERROR);
522	}
523	//Only write buffers to dart if mixer has been initialized; if not, then
524	//the first buffer write will do this for us.
525	if(fMixerSetup == TRUE) {
526	wmutex->enter(VMUTEX_WAIT_FOREVER);
527	State = STATE_PLAYING;
528	fUnderrun = FALSE;
529	wmutex->leave();
530	curbuf = curPlayBuf;
531	for(i=0;i<PREFILLBUF_DART;i++) {
532	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curbuf], 1);
533	if(++curbuf == PREFILLBUF_DART) {
534	curbuf = 0;
535	}
536	}
537	}
538	return(MMSYSERR_NOERROR);
539	}
540	/******************************************************************************/
541	/******************************************************************************/
542	ULONG DartWaveOut::getPosition()
543	{
544	MCI_STATUS_PARMS mciStatus = {0};
545	ULONG rc, nrbytes;
546
547	mciStatus.ulItem = MCI_STATUS_POSITION;
548	rc = mciSendCommand(DeviceId, MCI_STATUS, MCI_STATUS_ITEM\|MCI_WAIT, (PVOID)&mciStatus, 0);
549	if((rc & 0xFFFF) == MCIERR_SUCCESS) {
550	nrbytes = (mciStatus.ulReturn * (getAvgBytesPerSecond()/1000));
551	return nrbytes;;
552	}
553	mciError(rc);
554	return 0xFFFFFFFF;
555	}
556	/******************************************************************************/
557	/******************************************************************************/
558	BOOL DartWaveOut::queryFormat(ULONG formatTag, ULONG nChannels,
559	ULONG nSamplesPerSec, ULONG wBitsPerSample)
560	{
561	MCI_WAVE_GETDEVCAPS_PARMS mciAudioCaps;
562	MCI_GENERIC_PARMS GenericParms;
563	MCI_OPEN_PARMS mciOpenParms; /* open parms for MCI_OPEN */
564	int i, freqbits = 0;
565	ULONG rc, DeviceId;
566	BOOL winrc;
567
568	dprintf(("DartWaveOut::queryFormat %x srate=%d, nchan=%d, bps=%d", formatTag, nSamplesPerSec, nChannels, wBitsPerSample));
569
570	memset(&mciOpenParms, /* Object to fill with zeros. */
571	0, /* Value to place into the object. */
572	sizeof( mciOpenParms ) ); /* How many zero's to use. */
573
574	mciOpenParms.pszDeviceType = (PSZ)MCI_DEVTYPE_WAVEFORM_AUDIO;
575
576	rc = mciSendCommand( (USHORT) 0,
577	MCI_OPEN,
578	MCI_WAIT \| MCI_OPEN_TYPE_ID,
579	(PVOID) &mciOpenParms,
580	0);
581	if (rc != 0) {
582	return(FALSE);
583	}
584	DeviceId = mciOpenParms.usDeviceID;
585
586	memset( &mciAudioCaps , 0, sizeof(MCI_WAVE_GETDEVCAPS_PARMS));
587
588	mciAudioCaps.ulBitsPerSample = wBitsPerSample;
589	mciAudioCaps.ulFormatTag = DATATYPE_WAVEFORM;
590	mciAudioCaps.ulSamplesPerSec = nSamplesPerSec;
591	mciAudioCaps.ulChannels = nChannels;
592	mciAudioCaps.ulFormatMode = MCI_PLAY;
593	mciAudioCaps.ulItem = MCI_GETDEVCAPS_WAVE_FORMAT;
594
595	rc = mciSendCommand(DeviceId, /* Device ID */
596	MCI_GETDEVCAPS,
597	MCI_WAIT \| MCI_GETDEVCAPS_EXTENDED \| MCI_GETDEVCAPS_ITEM,
598	(PVOID) &mciAudioCaps,
599	0);
600	if((rc & 0xFFFF) != MCIERR_SUCCESS) {
601	mciError(rc);
602	winrc = FALSE;
603	}
604	else winrc = TRUE;
605
606	// Close the device
607	mciSendCommand(DeviceId,MCI_CLOSE,MCI_WAIT,(PVOID)&GenericParms,0);
608	return(winrc);
609	}
610	/******************************************************************************/
611	/******************************************************************************/
612	void DartWaveOut::mciError(ULONG ulError)
613	{
614	#ifdef DEBUG
615	char szError[256] = "";
616
617	mciGetErrorString(ulError, szError, sizeof(szError));
618	dprintf(("WINMM: DartWaveOut: %s\n", szError));
619	#endif
620	}
621	//******************************************************************************
622	//******************************************************************************
623	BOOL DartWaveOut::find(DartWaveOut *dwave)
624	{
625	DartWaveOut *curwave = waveout;
626
627	while(curwave) {
628	if(dwave == curwave) {
629	return(TRUE);
630	}
631	curwave = curwave->next;
632	}
633
634	#ifdef DEBUG
635	// WriteLog("WINMM:DartWaveOut not found!\n");
636	#endif
637	return(FALSE);
638	}
639	/******************************************************************************/
640	/******************************************************************************/
641	void DartWaveOut::handler(ULONG ulStatus, PMCI_MIX_BUFFER pBuffer, ULONG ulFlags)
642	{
643	ULONG buflength;
644	WAVEHDR whdr, prevhdr = NULL;
645
646	#ifdef DEBUG1
647	dprintf(("WINMM: handler %d\n", curPlayBuf));
648	#endif
649	if(ulFlags == MIX_STREAM_ERROR) {
650	if(ulStatus == ERROR_DEVICE_UNDERRUN) {
651	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
652	if(State == STATE_PLAYING) {
653	fUnderrun = TRUE;
654	pause(); //out of buffers, so pause playback
655	}
656	return;
657	}
658	dprintf(("WINMM: WaveOut handler, Unknown error %X\n", ulStatus));
659	return;
660	}
661	wmutex->enter(VMUTEX_WAIT_FOREVER);
662
663	whdr = wavehdr;
664	if(whdr == NULL) {
665	wmutex->leave();
666	//last buffer played -> no new ones -> underrun; pause playback
667	dprintf(("WINMM: WaveOut handler UNDERRUN!\n"));
668	if(State == STATE_PLAYING) {
669	fUnderrun = TRUE;
670	pause(); //out of buffers, so pause playback
671	}
672	return;
673	}
674	while(whdr) {
675	if(whdr->dwFlags & WHDR_DONE) {
676	#ifdef DEBUG1
677	dprintf(("WINMM: handler buf %X done\n", whdr));
678	#endif
679	whdr->dwFlags &= ~WHDR_INQUEUE;
680
681	if(prevhdr == NULL)
682	wavehdr = whdr->lpNext;
683	else prevhdr->lpNext = whdr->lpNext;
684
685	whdr->lpNext = NULL;
686	wmutex->leave();
687
688	if(mthdCallback) {
689	callback((ULONG)this, WOM_DONE, dwInstance, (ULONG)whdr, 0);
690	}
691	else
692	if(hwndCallback) {
693	dprintf(("Callback (msg) for buffer %x", whdr));
694	PostMessageA(hwndCallback, WOM_DONE, (WPARAM)this, (ULONG)whdr);
695	}
696
697	wmutex->enter(VMUTEX_WAIT_FOREVER);
698	}
699	prevhdr = whdr;
700	whdr = whdr->lpNext;
701	}
702
703	if(curhdr == NULL)
704	curhdr = wavehdr;
705
706	#ifdef DEBUG1
707	dprintf(("WINMM: handler cur (%d,%d), fill (%d,%d)\n", curPlayBuf, curPlayPos, curFillBuf, curFillPos));
708	#endif
709
710	while(curhdr) {
711	buflength = min((ULONG)MixBuffer[curFillBuf].ulBufferLength - curPlayPos,
712	(ULONG)curhdr->dwBufferLength - curFillPos);
713	memcpy((char *)MixBuffer[curFillBuf].pBuffer + curPlayPos,
714	curhdr->lpData + curFillPos,
715	buflength);
716	curPlayPos += buflength;
717	curFillPos += buflength;
718	#ifdef DEBUG1
719	dprintf(("WINMM: copied %d bytes, cufFillPos = %d, dwBufferLength = %d\n", buflength, curFillPos, curhdr->dwBufferLength));
720	#endif
721	if(curFillPos == curhdr->dwBufferLength) {
722	#ifdef DEBUG1
723	dprintf(("Buffer %d done\n", curFillBuf));
724	#endif
725	curFillPos = 0;
726	curhdr->dwFlags \|= WHDR_DONE;
727	//search for next unprocessed buffer
728	while(curhdr && curhdr->dwFlags & WHDR_DONE)
729	curhdr = curhdr->lpNext;
730	}
731	if(curPlayPos == MixBuffer[curFillBuf].ulBufferLength) {
732	curPlayPos = 0;
733	if(++curFillBuf == PREFILLBUF_DART) {
734	curFillBuf = 0;
735	}
736	if(curFillBuf == curPlayBuf)
737	break; //no more room left
738	}
739	}
740
741	if(curPlayBuf == PREFILLBUF_DART-1)
742	curPlayBuf = 0;
743	else curPlayBuf++;
744
745	wmutex->leave();
746	//Transfer buffer to DART
747	MixSetupParms->pmixWrite(MixSetupParms->ulMixHandle, &MixBuffer[curPlayBuf], 1);
748	}
749	/******************************************************************************/
750	/******************************************************************************/
751	LONG APIENTRY WaveOutHandler(ULONG ulStatus,
752	PMCI_MIX_BUFFER pBuffer,
753	ULONG ulFlags)
754	{
755	// PTIB ptib;
756	// PPIB ppib;
757	// DosGetInfoBlocks(&ptib, &ppib);
758	// dprintf(("WaveOutHandler: thread %d prio %X", ptib->tib_ptib2->tib2_ultid, ptib->tib_ptib2->tib2_ulpri));
759
760	DartWaveOut *dwave;
761
762	if(pBuffer && pBuffer->ulUserParm)
763	{
764	dwave = (DartWaveOut *)pBuffer->ulUserParm;
765	dwave->handler(ulStatus, pBuffer, ulFlags);
766	}
767	return(TRUE);
768	}
769
770	/******************************************************************************/
771	/******************************************************************************/
772	MMRESULT DartWaveOut::setVolume(ULONG ulVol)
773	{
774	ULONG ulVolR = (((ulVol & 0xffff0000) >> 16 )*100)/0xFFFF; // Right Volume
775	ULONG ulVolL = ((ulVol& 0x0000ffff)*100)/0xFFFF; // Left Volume
776	MCI_SET_PARMS msp = {0};
777
778	volume = ulVol;
779
780	// PD: My card (ESS 1868 PnP) driver can't change only
781	// one channel Left or Right :-(
782	//
783	#ifdef GOOD_AUDIO_CARD_DRIVER
784
785	msp.ulAudio = MCI_SET_AUDIO_LEFT;
786	msp.ulLevel = ulVolL;
787
788	mciSendCommand(DeviceId, MCI_SET,
789	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
790	&msp, 0);
791
792	msp.ulAudio = MCI_SET_AUDIO_RIGHT;
793	msp.ulLevel = ulVolR;
794
795	#else
796	msp.ulAudio = MCI_SET_AUDIO_ALL;
797	msp.ulLevel = max(ulVolR,ulVolL);
798	#endif
799
800	mciSendCommand(DeviceId, MCI_SET,
801	MCI_WAIT \| MCI_SET_AUDIO \| MCI_SET_VOLUME,
802	&msp, 0);
803	return 0;
804	}
805	/******************************************************************************/
806	/******************************************************************************/
807	DartWaveOut *DartWaveOut::waveout = NULL;
808

Note: See TracBrowser for help on using the repository browser.

Download in other formats: