DrvHostPulseAudio.cpp@ 75802

Last change on this file since 75802 was 73840, checked in by vboxsync, 6 years ago
Audio/DrvHostPulseAudio: Fixed input stream creation.
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 53.4 KB

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1	/* $Id: DrvHostPulseAudio.cpp 73840 2018-08-22 16:48:52Z vboxsync $ */
2	/** @file
3	* VBox audio devices: Pulse Audio audio driver.
4	*/
5
6	/*
7	* Copyright (C) 2006-2018 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
23	#include <VBox/log.h>
24	#include <VBox/vmm/pdmaudioifs.h>
25
26	#include <stdio.h>
27
28	#include <iprt/alloc.h>
29	#include <iprt/mem.h>
30	#include <iprt/uuid.h>
31
32	RT_C_DECLS_BEGIN
33	#include "pulse_mangling.h"
34	#include "pulse_stubs.h"
35	RT_C_DECLS_END
36
37	#include <pulse/pulseaudio.h>
38
39	#include "DrvAudio.h"
40	#include "VBoxDD.h"
41
42
43	/*********************************************************************************************************************************
44	* Defines *
45	*********************************************************************************************************************************/
46	#define VBOX_PULSEAUDIO_MAX_LOG_REL_ERRORS 32 /** @todo Make this configurable thru driver options. */
47
48	#ifndef PA_STREAM_NOFLAGS
49	# define PA_STREAM_NOFLAGS (pa_context_flags_t)0x0000U /* since 0.9.19 */
50	#endif
51
52	#ifndef PA_CONTEXT_NOFLAGS
53	# define PA_CONTEXT_NOFLAGS (pa_context_flags_t)0x0000U /* since 0.9.19 */
54	#endif
55
56	/** No flags specified. */
57	#define PULSEAUDIOENUMCBFLAGS_NONE 0
58	/** (Release) log found devices. */
59	#define PULSEAUDIOENUMCBFLAGS_LOG RT_BIT(0)
60
61	/** Makes DRVHOSTPULSEAUDIO out of PDMIHOSTAUDIO. */
62	#define PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface) \
63	( (PDRVHOSTPULSEAUDIO)((uintptr_t)pInterface - RT_UOFFSETOF(DRVHOSTPULSEAUDIO, IHostAudio)) )
64
65
66	/*********************************************************************************************************************************
67	* Structures *
68	*********************************************************************************************************************************/
69
70	/**
71	* Host Pulse audio driver instance data.
72	* @implements PDMIAUDIOCONNECTOR
73	*/
74	typedef struct DRVHOSTPULSEAUDIO
75	{
76	/** Pointer to the driver instance structure. */
77	PPDMDRVINS pDrvIns;
78	/** Pointer to PulseAudio's threaded main loop. */
79	pa_threaded_mainloop *pMainLoop;
80	/**
81	* Pointer to our PulseAudio context.
82	* Note: We use a pMainLoop in a separate thread (pContext).
83	* So either use callback functions or protect these functions
84	* by pa_threaded_mainloop_lock() / pa_threaded_mainloop_unlock().
85	*/
86	pa_context *pContext;
87	/** Shutdown indicator. */
88	volatile bool fAbortLoop;
89	/** Enumeration operation successful? */
90	volatile bool fEnumOpSuccess;
91	/** Pointer to host audio interface. */
92	PDMIHOSTAUDIO IHostAudio;
93	/** Error count for not flooding the release log.
94	* Specify UINT32_MAX for unlimited logging. */
95	uint32_t cLogErrors;
96	/** The stream (base) name; needed for distinguishing
97	* streams in the PulseAudio mixer controls if multiple
98	* VMs are running at the same time. */
99	char szStreamName[64];
100	} DRVHOSTPULSEAUDIO, *PDRVHOSTPULSEAUDIO;
101
102	typedef struct PULSEAUDIOSTREAM
103	{
104	/** The stream's acquired configuration. */
105	PPDMAUDIOSTREAMCFG pCfg;
106	/** Pointer to driver instance. */
107	PDRVHOSTPULSEAUDIO pDrv;
108	/** Pointer to opaque PulseAudio stream. */
109	pa_stream *pStream;
110	/** Pulse sample format and attribute specification. */
111	pa_sample_spec SampleSpec;
112	/** Pulse playback and buffer metrics. */
113	pa_buffer_attr BufAttr;
114	int fOpSuccess;
115	/** Pointer to Pulse sample peeking buffer. */
116	const uint8_t *pu8PeekBuf;
117	/** Current size (in bytes) of peeking data in
118	* buffer. */
119	size_t cbPeekBuf;
120	/** Our offset (in bytes) in peeking buffer. */
121	size_t offPeekBuf;
122	pa_operation *pDrainOp;
123	/** Number of occurred audio data underflows. */
124	uint32_t cUnderflows;
125	/** Current latency (in us). */
126	uint64_t curLatencyUs;
127	#ifdef LOG_ENABLED
128	/** Start time stamp (in us) of stream playback / recording. */
129	pa_usec_t tsStartUs;
130	/** Time stamp (in us) when last read from / written to the stream. */
131	pa_usec_t tsLastReadWrittenUs;
132	#endif
133	} PULSEAUDIOSTREAM, *PPULSEAUDIOSTREAM;
134
135	/**
136	* Callback context for server enumeration callbacks.
137	*/
138	typedef struct PULSEAUDIOENUMCBCTX
139	{
140	/** Pointer to host backend driver. */
141	PDRVHOSTPULSEAUDIO pDrv;
142	/** Enumeration flags. */
143	uint32_t fFlags;
144	/** Number of found input devices. */
145	uint8_t cDevIn;
146	/** Number of found output devices. */
147	uint8_t cDevOut;
148	/** Name of default sink being used. Must be free'd using RTStrFree(). */
149	char *pszDefaultSink;
150	/** Name of default source being used. Must be free'd using RTStrFree(). */
151	char *pszDefaultSource;
152	} PULSEAUDIOENUMCBCTX, *PPULSEAUDIOENUMCBCTX;
153
154	#ifndef PA_CONTEXT_IS_GOOD /* To allow running on systems with PulseAudio < 0.9.11. */
155	static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x) {
156	return
157	x == PA_CONTEXT_CONNECTING \|\|
158	x == PA_CONTEXT_AUTHORIZING \|\|
159	x == PA_CONTEXT_SETTING_NAME \|\|
160	x == PA_CONTEXT_READY;
161	}
162	#endif /* !PA_CONTEXT_IS_GOOD */
163
164	#ifndef PA_STREAM_IS_GOOD /* To allow running on systems with PulseAudio < 0.9.11. */
165	static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x) {
166	return
167	x == PA_STREAM_CREATING \|\|
168	x == PA_STREAM_READY;
169	}
170	#endif /* !PA_STREAM_IS_GOOD */
171
172
173	/*********************************************************************************************************************************
174	* Prototypes *
175	*********************************************************************************************************************************/
176
177	static int paEnumerate(PDRVHOSTPULSEAUDIO pThis, PPDMAUDIOBACKENDCFG pCfg, uint32_t fEnum);
178	static int paError(PDRVHOSTPULSEAUDIO pThis, const char *szMsg);
179	#ifdef DEBUG
180	static void paStreamCbUnderflow(pa_stream pStream, void pvContext);
181	static void paStreamCbReqWrite(pa_stream pStream, size_t cbLen, void pvContext);
182	#endif
183	static void paStreamCbSuccess(pa_stream pStream, int fSuccess, void pvContext);
184
185
186	/**
187	* Signal the main loop to abort. Just signalling isn't sufficient as the
188	* mainloop might not have been entered yet.
189	*/
190	static void paSignalWaiter(PDRVHOSTPULSEAUDIO pThis)
191	{
192	if (!pThis)
193	return;
194
195	pThis->fAbortLoop = true;
196	pa_threaded_mainloop_signal(pThis->pMainLoop, 0);
197	}
198
199
200	static pa_sample_format_t paAudioPropsToPulse(PPDMAUDIOPCMPROPS pProps)
201	{
202	switch (pProps->cBytes)
203	{
204	case 1:
205	if (!pProps->fSigned)
206	return PA_SAMPLE_U8;
207	break;
208
209	case 2:
210	if (pProps->fSigned)
211	return PA_SAMPLE_S16LE;
212	break;
213
214	#ifdef PA_SAMPLE_S32LE
215	case 4:
216	if (pProps->fSigned)
217	return PA_SAMPLE_S32LE;
218	break;
219	#endif
220
221	default:
222	break;
223	}
224
225	AssertMsgFailed(("%RU8%s not supported\n", pProps->cBytes, pProps->fSigned ? "S" : "U"));
226	return PA_SAMPLE_INVALID;
227	}
228
229
230	static int paPulseToAudioProps(pa_sample_format_t pulsefmt, PPDMAUDIOPCMPROPS pProps)
231	{
232	switch (pulsefmt)
233	{
234	case PA_SAMPLE_U8:
235	pProps->cBytes = 1;
236	pProps->fSigned = false;
237	break;
238
239	case PA_SAMPLE_S16LE:
240	pProps->cBytes = 2;
241	pProps->fSigned = true;
242	break;
243
244	case PA_SAMPLE_S16BE:
245	pProps->cBytes = 2;
246	pProps->fSigned = true;
247	/** @todo Handle Endianess. */
248	break;
249
250	#ifdef PA_SAMPLE_S32LE
251	case PA_SAMPLE_S32LE:
252	pProps->cBytes = 4;
253	pProps->fSigned = true;
254	break;
255	#endif
256
257	#ifdef PA_SAMPLE_S32BE
258	case PA_SAMPLE_S32BE:
259	pProps->cBytes = 4;
260	pProps->fSigned = true;
261	/** @todo Handle Endianess. */
262	break;
263	#endif
264
265	default:
266	AssertLogRelMsgFailed(("PulseAudio: Format (%ld) not supported\n", pulsefmt));
267	return VERR_NOT_SUPPORTED;
268	}
269
270	return VINF_SUCCESS;
271	}
272
273
274	/**
275	* Synchronously wait until an operation completed.
276	*/
277	static int paWaitForEx(PDRVHOSTPULSEAUDIO pThis, pa_operation *pOP, RTMSINTERVAL cMsTimeout)
278	{
279	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
280	AssertPtrReturn(pOP, VERR_INVALID_POINTER);
281
282	int rc = VINF_SUCCESS;
283
284	uint64_t u64StartMs = RTTimeMilliTS();
285	while (pa_operation_get_state(pOP) == PA_OPERATION_RUNNING)
286	{
287	if (!pThis->fAbortLoop)
288	{
289	AssertPtr(pThis->pMainLoop);
290	pa_threaded_mainloop_wait(pThis->pMainLoop);
291	if ( !pThis->pContext
292	\|\| pa_context_get_state(pThis->pContext) != PA_CONTEXT_READY)
293	{
294	LogRel(("PulseAudio: pa_context_get_state context not ready\n"));
295	break;
296	}
297	}
298	pThis->fAbortLoop = false;
299
300	uint64_t u64ElapsedMs = RTTimeMilliTS() - u64StartMs;
301	if (u64ElapsedMs >= cMsTimeout)
302	{
303	rc = VERR_TIMEOUT;
304	break;
305	}
306	}
307
308	pa_operation_unref(pOP);
309
310	return rc;
311	}
312
313
314	static int paWaitFor(PDRVHOSTPULSEAUDIO pThis, pa_operation *pOP)
315	{
316	return paWaitForEx(pThis, pOP, 10 * 1000 /* 10s timeout */);
317	}
318
319
320	/**
321	* Context status changed.
322	*/
323	static void paContextCbStateChanged(pa_context pCtx, void pvUser)
324	{
325	AssertPtrReturnVoid(pCtx);
326
327	PDRVHOSTPULSEAUDIO pThis = (PDRVHOSTPULSEAUDIO)pvUser;
328	AssertPtrReturnVoid(pThis);
329
330	switch (pa_context_get_state(pCtx))
331	{
332	case PA_CONTEXT_READY:
333	case PA_CONTEXT_TERMINATED:
334	case PA_CONTEXT_FAILED:
335	paSignalWaiter(pThis);
336	break;
337
338	default:
339	break;
340	}
341	}
342
343
344	/**
345	* Callback called when our pa_stream_drain operation was completed.
346	*/
347	static void paStreamCbDrain(pa_stream pStream, int fSuccess, void pvUser)
348	{
349	AssertPtrReturnVoid(pStream);
350
351	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pvUser;
352	AssertPtrReturnVoid(pStreamPA);
353
354	pStreamPA->fOpSuccess = fSuccess;
355	if (fSuccess)
356	{
357	pa_operation_unref(pa_stream_cork(pStream, 1,
358	paStreamCbSuccess, pvUser));
359	}
360	else
361	paError(pStreamPA->pDrv, "Failed to drain stream");
362
363	if (pStreamPA->pDrainOp)
364	{
365	pa_operation_unref(pStreamPA->pDrainOp);
366	pStreamPA->pDrainOp = NULL;
367	}
368	}
369
370
371	/**
372	* Stream status changed.
373	*/
374	static void paStreamCbStateChanged(pa_stream pStream, void pvUser)
375	{
376	AssertPtrReturnVoid(pStream);
377
378	PDRVHOSTPULSEAUDIO pThis = (PDRVHOSTPULSEAUDIO)pvUser;
379	AssertPtrReturnVoid(pThis);
380
381	switch (pa_stream_get_state(pStream))
382	{
383	case PA_STREAM_READY:
384	case PA_STREAM_FAILED:
385	case PA_STREAM_TERMINATED:
386	paSignalWaiter(pThis);
387	break;
388
389	default:
390	break;
391	}
392	}
393
394
395	#ifdef DEBUG
396	static void paStreamCbReqWrite(pa_stream pStream, size_t cbLen, void pvContext)
397	{
398	RT_NOREF(cbLen, pvContext);
399
400	PPULSEAUDIOSTREAM pStrm = (PPULSEAUDIOSTREAM)pvContext;
401	AssertPtrReturnVoid(pStrm);
402
403	pa_usec_t usec = 0;
404	int neg = 0;
405	pa_stream_get_latency(pStream, &usec, &neg);
406
407	Log2Func(("Requested %zu bytes -- Current latency is %RU64ms\n", cbLen, usec / 1000));
408	}
409
410
411	static void paStreamCbUnderflow(pa_stream pStream, void pvContext)
412	{
413	PPULSEAUDIOSTREAM pStrm = (PPULSEAUDIOSTREAM)pvContext;
414	AssertPtrReturnVoid(pStrm);
415
416	pStrm->cUnderflows++;
417
418	LogRel2(("PulseAudio: Warning: Hit underflow #%RU32\n", pStrm->cUnderflows));
419
420	if ( pStrm->cUnderflows >= 6 /** @todo Make this check configurable. */
421	&& pStrm->curLatencyUs < 2000000 /* 2s */)
422	{
423	pStrm->curLatencyUs = (pStrm->curLatencyUs * 3) / 2;
424
425	LogRel2(("PulseAudio: Output latency increased to %RU64ms\n", pStrm->curLatencyUs / 1000 /* ms */));
426
427	pStrm->BufAttr.maxlength = pa_usec_to_bytes(pStrm->curLatencyUs, &pStrm->SampleSpec);
428	pStrm->BufAttr.tlength = pa_usec_to_bytes(pStrm->curLatencyUs, &pStrm->SampleSpec);
429
430	pa_stream_set_buffer_attr(pStream, &pStrm->BufAttr, NULL, NULL);
431
432	pStrm->cUnderflows = 0;
433	}
434
435	# ifdef LOG_ENABLED
436	pa_usec_t curLatencyUs = 0;
437	pa_stream_get_latency(pStream, &curLatencyUs, NULL /* Neg */);
438
439	const pa_timing_info *pTInfo = pa_stream_get_timing_info(pStream);
440	const pa_sample_spec *pSpec = pa_stream_get_sample_spec(pStream);
441
442	pa_usec_t curPosWritesUs = pa_bytes_to_usec(pTInfo->write_index, pSpec);
443	pa_usec_t curTsUs = pa_rtclock_now() - pStrm->tsStartUs;
444
445	Log2Func(("curPosWrite=%RU64ms, curTs=%RU64ms, curDelta=%RI64ms, curLatency=%RU64ms\n",
446	curPosWritesUs / 1000, curTsUs / 1000, (((int64_t)curPosWritesUs - (int64_t)curTsUs) / 1000), curLatencyUs / 1000));
447	# endif
448	}
449
450
451	static void paStreamCbOverflow(pa_stream pStream, void pvContext)
452	{
453	RT_NOREF(pStream, pvContext);
454
455	Log2Func(("Warning: Hit overflow\n"));
456	}
457	#endif /* DEBUG */
458
459
460	static void paStreamCbSuccess(pa_stream pStream, int fSuccess, void pvUser)
461	{
462	AssertPtrReturnVoid(pStream);
463
464	PPULSEAUDIOSTREAM pStrm = (PPULSEAUDIOSTREAM)pvUser;
465	AssertPtrReturnVoid(pStrm);
466
467	pStrm->fOpSuccess = fSuccess;
468
469	if (fSuccess)
470	paSignalWaiter(pStrm->pDrv);
471	else
472	paError(pStrm->pDrv, "Failed to finish stream operation");
473	}
474
475
476	static int paStreamOpen(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, bool fIn, const char *pszName)
477	{
478	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
479	AssertPtrReturn(pStreamPA, VERR_INVALID_POINTER);
480	AssertPtrReturn(pszName, VERR_INVALID_POINTER);
481
482	int rc = VERR_AUDIO_STREAM_COULD_NOT_CREATE;
483
484	pa_stream *pStream = NULL;
485	uint32_t flags = PA_STREAM_NOFLAGS;
486
487	pa_threaded_mainloop_lock(pThis->pMainLoop);
488
489	do
490	{
491	pa_sample_spec *pSampleSpec = &pStreamPA->SampleSpec;
492
493	LogFunc(("Opening '%s', rate=%dHz, channels=%d, format=%s\n",
494	pszName, pSampleSpec->rate, pSampleSpec->channels,
495	pa_sample_format_to_string(pSampleSpec->format)));
496
497	if (!pa_sample_spec_valid(pSampleSpec))
498	{
499	LogRel(("PulseAudio: Unsupported sample specification for stream '%s'\n", pszName));
500	break;
501	}
502
503	pa_buffer_attr *pBufAttr = &pStreamPA->BufAttr;
504
505	/** @todo r=andy Use pa_stream_new_with_proplist instead. */
506	if (!(pStream = pa_stream_new(pThis->pContext, pszName, pSampleSpec, NULL /* pa_channel_map */)))
507	{
508	LogRel(("PulseAudio: Could not create stream '%s'\n", pszName));
509	rc = VERR_NO_MEMORY;
510	break;
511	}
512
513	#ifdef DEBUG
514	pa_stream_set_write_callback (pStream, paStreamCbReqWrite, pStreamPA);
515	pa_stream_set_underflow_callback (pStream, paStreamCbUnderflow, pStreamPA);
516	if (!fIn) /* Only for output streams. */
517	pa_stream_set_overflow_callback(pStream, paStreamCbOverflow, pStreamPA);
518	#endif
519	pa_stream_set_state_callback (pStream, paStreamCbStateChanged, pThis);
520
521	#if PA_API_VERSION >= 12
522	/* XXX */
523	flags \|= PA_STREAM_ADJUST_LATENCY;
524	#endif
525	/* For using pa_stream_get_latency() and pa_stream_get_time(). */
526	flags \|= PA_STREAM_INTERPOLATE_TIMING \| PA_STREAM_AUTO_TIMING_UPDATE;
527
528	/* No input/output right away after the stream was started. */
529	flags \|= PA_STREAM_START_CORKED;
530
531	if (fIn)
532	{
533	LogFunc(("Input stream attributes: maxlength=%d fragsize=%d\n",
534	pBufAttr->maxlength, pBufAttr->fragsize));
535
536	if (pa_stream_connect_record(pStream, /dev=/NULL, pBufAttr, (pa_stream_flags_t)flags) < 0)
537	{
538	LogRel(("PulseAudio: Could not connect input stream '%s': %s\n",
539	pszName, pa_strerror(pa_context_errno(pThis->pContext))));
540	break;
541	}
542	}
543	else
544	{
545	LogFunc(("Output buffer attributes: maxlength=%d tlength=%d prebuf=%d minreq=%d\n",
546	pBufAttr->maxlength, pBufAttr->tlength, pBufAttr->prebuf, pBufAttr->minreq));
547
548	if (pa_stream_connect_playback(pStream, /dev=/NULL, pBufAttr, (pa_stream_flags_t)flags,
549	/cvolume=/NULL, /sync_stream=/NULL) < 0)
550	{
551	LogRel(("PulseAudio: Could not connect playback stream '%s': %s\n",
552	pszName, pa_strerror(pa_context_errno(pThis->pContext))));
553	break;
554	}
555	}
556
557	/* Wait until the stream is ready. */
558	for (;;)
559	{
560	if (!pThis->fAbortLoop)
561	pa_threaded_mainloop_wait(pThis->pMainLoop);
562	pThis->fAbortLoop = false;
563
564	pa_stream_state_t streamSt = pa_stream_get_state(pStream);
565	if (streamSt == PA_STREAM_READY)
566	break;
567	else if ( streamSt == PA_STREAM_FAILED
568	\|\| streamSt == PA_STREAM_TERMINATED)
569	{
570	LogRel(("PulseAudio: Failed to initialize stream '%s' (state %ld)\n", pszName, streamSt));
571	break;
572	}
573	}
574
575	#ifdef LOG_ENABLED
576	pStreamPA->tsStartUs = pa_rtclock_now();
577	#endif
578	const pa_buffer_attr *pBufAttrObtained = pa_stream_get_buffer_attr(pStream);
579	AssertPtr(pBufAttrObtained);
580	memcpy(pBufAttr, pBufAttrObtained, sizeof(pa_buffer_attr));
581
582	LogFunc(("Obtained %s buffer attributes: tLength=%RU32, maxLength=%RU32, minReq=%RU32, fragSize=%RU32, preBuf=%RU32\n",
583	fIn ? "capture" : "playback",
584	pBufAttr->tlength, pBufAttr->maxlength, pBufAttr->minreq, pBufAttr->fragsize, pBufAttr->prebuf));
585
586	pStreamPA->pStream = pStream;
587
588	rc = VINF_SUCCESS;
589
590	} while (0);
591
592	if ( RT_FAILURE(rc)
593	&& pStream)
594	pa_stream_disconnect(pStream);
595
596	pa_threaded_mainloop_unlock(pThis->pMainLoop);
597
598	if (RT_FAILURE(rc))
599	{
600	if (pStream)
601	pa_stream_unref(pStream);
602	}
603
604	LogFlowFuncLeaveRC(rc);
605	return rc;
606	}
607
608
609	/**
610	* @interface_method_impl{PDMIHOSTAUDIO,pfnInit}
611	*/
612	static DECLCALLBACK(int) drvHostPulseAudioInit(PPDMIHOSTAUDIO pInterface)
613	{
614	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
615
616	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
617
618	LogFlowFuncEnter();
619
620	int rc = audioLoadPulseLib();
621	if (RT_FAILURE(rc))
622	{
623	LogRel(("PulseAudio: Failed to load the PulseAudio shared library! Error %Rrc\n", rc));
624	return rc;
625	}
626
627	LogRel(("PulseAudio: Using v%s\n", pa_get_library_version()));
628
629	pThis->fAbortLoop = false;
630	pThis->pMainLoop = NULL;
631
632	bool fLocked = false;
633
634	do
635	{
636	if (!(pThis->pMainLoop = pa_threaded_mainloop_new()))
637	{
638	LogRel(("PulseAudio: Failed to allocate main loop: %s\n",
639	pa_strerror(pa_context_errno(pThis->pContext))));
640	rc = VERR_NO_MEMORY;
641	break;
642	}
643
644	if (!(pThis->pContext = pa_context_new(pa_threaded_mainloop_get_api(pThis->pMainLoop), "VirtualBox")))
645	{
646	LogRel(("PulseAudio: Failed to allocate context: %s\n",
647	pa_strerror(pa_context_errno(pThis->pContext))));
648	rc = VERR_NO_MEMORY;
649	break;
650	}
651
652	if (pa_threaded_mainloop_start(pThis->pMainLoop) < 0)
653	{
654	LogRel(("PulseAudio: Failed to start threaded mainloop: %s\n",
655	pa_strerror(pa_context_errno(pThis->pContext))));
656	break;
657	}
658
659	/* Install a global callback to known if something happens to our acquired context. */
660	pa_context_set_state_callback(pThis->pContext, paContextCbStateChanged, pThis /* pvUserData */);
661
662	pa_threaded_mainloop_lock(pThis->pMainLoop);
663	fLocked = true;
664
665	if (pa_context_connect(pThis->pContext, NULL /* pszServer */,
666	PA_CONTEXT_NOFLAGS, NULL) < 0)
667	{
668	LogRel(("PulseAudio: Failed to connect to server: %s\n",
669	pa_strerror(pa_context_errno(pThis->pContext))));
670	break;
671	}
672
673	/* Wait until the pThis->pContext is ready. */
674	for (;;)
675	{
676	if (!pThis->fAbortLoop)
677	pa_threaded_mainloop_wait(pThis->pMainLoop);
678	pThis->fAbortLoop = false;
679
680	pa_context_state_t cstate = pa_context_get_state(pThis->pContext);
681	if (cstate == PA_CONTEXT_READY)
682	break;
683	else if ( cstate == PA_CONTEXT_TERMINATED
684	\|\| cstate == PA_CONTEXT_FAILED)
685	{
686	LogRel(("PulseAudio: Failed to initialize context (state %d)\n", cstate));
687	break;
688	}
689	}
690	}
691	while (0);
692
693	if (fLocked)
694	pa_threaded_mainloop_unlock(pThis->pMainLoop);
695
696	if (RT_FAILURE(rc))
697	{
698	if (pThis->pMainLoop)
699	pa_threaded_mainloop_stop(pThis->pMainLoop);
700
701	if (pThis->pContext)
702	{
703	pa_context_disconnect(pThis->pContext);
704	pa_context_unref(pThis->pContext);
705	pThis->pContext = NULL;
706	}
707
708	if (pThis->pMainLoop)
709	{
710	pa_threaded_mainloop_free(pThis->pMainLoop);
711	pThis->pMainLoop = NULL;
712	}
713	}
714
715	LogFlowFuncLeaveRC(rc);
716	return rc;
717	}
718
719
720	static int paCreateStreamOut(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA,
721	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
722	{
723	pStreamPA->pDrainOp = NULL;
724
725	pStreamPA->SampleSpec.format = paAudioPropsToPulse(&pCfgReq->Props);
726	pStreamPA->SampleSpec.rate = pCfgReq->Props.uHz;
727	pStreamPA->SampleSpec.channels = pCfgReq->Props.cChannels;
728
729	pStreamPA->curLatencyUs = DrvAudioHlpFramesToMilli(pCfgReq->Backend.cfBufferSize, &pCfgReq->Props) * RT_US_1MS;
730
731	const uint32_t cbLatency = pa_usec_to_bytes(pStreamPA->curLatencyUs, &pStreamPA->SampleSpec);
732
733	LogRel2(("PulseAudio: Initial output latency is %RU64ms (%RU32 bytes)\n", pStreamPA->curLatencyUs / RT_US_1MS, cbLatency));
734
735	pStreamPA->BufAttr.tlength = cbLatency;
736	pStreamPA->BufAttr.maxlength = -1; /* Let the PulseAudio server choose the biggest size it can handle. */
737	pStreamPA->BufAttr.prebuf = cbLatency;
738	pStreamPA->BufAttr.minreq = DrvAudioHlpFramesToBytes(pCfgReq->Backend.cfPeriod, &pCfgReq->Props);
739
740	LogFunc(("Requested: BufAttr tlength=%RU32, maxLength=%RU32, minReq=%RU32\n",
741	pStreamPA->BufAttr.tlength, pStreamPA->BufAttr.maxlength, pStreamPA->BufAttr.minreq));
742
743	Assert(pCfgReq->enmDir == PDMAUDIODIR_OUT);
744
745	char szName[256];
746	RTStrPrintf2(szName, sizeof(szName), "VirtualBox %s [%s]",
747	DrvAudioHlpPlaybackDstToStr(pCfgReq->DestSource.Dest), pThis->szStreamName);
748
749	/* Note that the struct BufAttr is updated to the obtained values after this call! */
750	int rc = paStreamOpen(pThis, pStreamPA, false /* fIn */, szName);
751	if (RT_FAILURE(rc))
752	return rc;
753
754	rc = paPulseToAudioProps(pStreamPA->SampleSpec.format, &pCfgAcq->Props);
755	if (RT_FAILURE(rc))
756	{
757	LogRel(("PulseAudio: Cannot find audio output format %ld\n", pStreamPA->SampleSpec.format));
758	return rc;
759	}
760
761	pCfgAcq->Props.uHz = pStreamPA->SampleSpec.rate;
762	pCfgAcq->Props.cChannels = pStreamPA->SampleSpec.channels;
763	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBytes, pCfgAcq->Props.cChannels);
764
765	LogFunc(("Acquired: BufAttr tlength=%RU32, maxLength=%RU32, minReq=%RU32\n",
766	pStreamPA->BufAttr.tlength, pStreamPA->BufAttr.maxlength, pStreamPA->BufAttr.minreq));
767
768	pCfgAcq->Backend.cfPeriod = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.minreq);
769	pCfgAcq->Backend.cfBufferSize = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.tlength);
770	pCfgAcq->Backend.cfPreBuf = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.prebuf);
771
772	pStreamPA->pDrv = pThis;
773
774	return rc;
775	}
776
777
778	static int paCreateStreamIn(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA,
779	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
780	{
781	pStreamPA->SampleSpec.format = paAudioPropsToPulse(&pCfgReq->Props);
782	pStreamPA->SampleSpec.rate = pCfgReq->Props.uHz;
783	pStreamPA->SampleSpec.channels = pCfgReq->Props.cChannels;
784
785	pStreamPA->BufAttr.fragsize = DrvAudioHlpFramesToBytes(pCfgReq->Backend.cfPeriod, &pCfgReq->Props);
786	pStreamPA->BufAttr.maxlength = -1; /* Let the PulseAudio server choose the biggest size it can handle. */
787
788	Assert(pCfgReq->enmDir == PDMAUDIODIR_IN);
789
790	char szName[256];
791	RTStrPrintf2(szName, sizeof(szName), "VirtualBox %s [%s]",
792	DrvAudioHlpRecSrcToStr(pCfgReq->DestSource.Source), pThis->szStreamName);
793
794	/* Note: Other members of BufAttr are ignored for record streams. */
795	int rc = paStreamOpen(pThis, pStreamPA, true /* fIn */, szName);
796	if (RT_FAILURE(rc))
797	return rc;
798
799	rc = paPulseToAudioProps(pStreamPA->SampleSpec.format, &pCfgAcq->Props);
800	if (RT_FAILURE(rc))
801	{
802	LogRel(("PulseAudio: Cannot find audio capture format %ld\n", pStreamPA->SampleSpec.format));
803	return rc;
804	}
805
806	pStreamPA->pDrv = pThis;
807	pStreamPA->pu8PeekBuf = NULL;
808
809	pCfgAcq->Props.uHz = pStreamPA->SampleSpec.rate;
810	pCfgAcq->Props.cChannels = pStreamPA->SampleSpec.channels;
811
812	pCfgAcq->Backend.cfPeriod = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.fragsize);
813	pCfgAcq->Backend.cfBufferSize = pCfgAcq->Backend.cfBufferSize;
814	pCfgAcq->Backend.cfPreBuf = pCfgAcq->Backend.cfPeriod;
815
816	LogFlowFuncLeaveRC(rc);
817	return rc;
818	}
819
820
821	/**
822	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
823	*/
824	static DECLCALLBACK(int) drvHostPulseAudioStreamCapture(PPDMIHOSTAUDIO pInterface,
825	PPDMAUDIOBACKENDSTREAM pStream, void pvBuf, uint32_t cxBuf, uint32_t pcxRead)
826	{
827	RT_NOREF(pvBuf, cxBuf);
828	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
829	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
830	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
831	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
832	/* pcbRead is optional. */
833
834	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
835	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream;
836
837	/* We should only call pa_stream_readable_size() once and trust the first value. */
838	pa_threaded_mainloop_lock(pThis->pMainLoop);
839	size_t cbAvail = pa_stream_readable_size(pStreamPA->pStream);
840	pa_threaded_mainloop_unlock(pThis->pMainLoop);
841
842	if (cbAvail == (size_t)-1)
843	return paError(pStreamPA->pDrv, "Failed to determine input data size");
844
845	/* If the buffer was not dropped last call, add what remains. */
846	if (pStreamPA->pu8PeekBuf)
847	{
848	Assert(pStreamPA->cbPeekBuf >= pStreamPA->offPeekBuf);
849	cbAvail += (pStreamPA->cbPeekBuf - pStreamPA->offPeekBuf);
850	}
851
852	Log3Func(("cbAvail=%zu\n", cbAvail));
853
854	if (!cbAvail) /* No data? Bail out. */
855	{
856	if (pcxRead)
857	*pcxRead = 0;
858	return VINF_SUCCESS;
859	}
860
861	int rc = VINF_SUCCESS;
862
863	size_t cbToRead = RT_MIN(cbAvail, cxBuf);
864
865	Log3Func(("cbToRead=%zu, cbAvail=%zu, offPeekBuf=%zu, cbPeekBuf=%zu\n",
866	cbToRead, cbAvail, pStreamPA->offPeekBuf, pStreamPA->cbPeekBuf));
867
868	uint32_t cbReadTotal = 0;
869
870	while (cbToRead)
871	{
872	/* If there is no data, do another peek. */
873	if (!pStreamPA->pu8PeekBuf)
874	{
875	pa_threaded_mainloop_lock(pThis->pMainLoop);
876	pa_stream_peek(pStreamPA->pStream,
877	(const void**)&pStreamPA->pu8PeekBuf, &pStreamPA->cbPeekBuf);
878	pa_threaded_mainloop_unlock(pThis->pMainLoop);
879
880	pStreamPA->offPeekBuf = 0;
881
882	/* No data anymore?
883	* Note: If there's a data hole (cbPeekBuf then contains the length of the hole)
884	* we need to drop the stream lateron. */
885	if ( !pStreamPA->pu8PeekBuf
886	&& !pStreamPA->cbPeekBuf)
887	{
888	break;
889	}
890	}
891
892	Assert(pStreamPA->cbPeekBuf >= pStreamPA->offPeekBuf);
893	size_t cbToWrite = RT_MIN(pStreamPA->cbPeekBuf - pStreamPA->offPeekBuf, cbToRead);
894
895	Log3Func(("cbToRead=%zu, cbToWrite=%zu, offPeekBuf=%zu, cbPeekBuf=%zu, pu8PeekBuf=%p\n",
896	cbToRead, cbToWrite,
897	pStreamPA->offPeekBuf, pStreamPA->cbPeekBuf, pStreamPA->pu8PeekBuf));
898
899	if ( cbToWrite
900	/* Only copy data if it's not a data hole (see above). */
901	&& pStreamPA->pu8PeekBuf
902	&& pStreamPA->cbPeekBuf)
903	{
904	memcpy((uint8_t *)pvBuf + cbReadTotal, pStreamPA->pu8PeekBuf + pStreamPA->offPeekBuf, cbToWrite);
905
906	Assert(cbToRead >= cbToWrite);
907	cbToRead -= cbToWrite;
908	cbReadTotal += cbToWrite;
909
910	pStreamPA->offPeekBuf += cbToWrite;
911	Assert(pStreamPA->offPeekBuf <= pStreamPA->cbPeekBuf);
912	}
913
914	if (/* Nothing to write anymore? Drop the buffer. */
915	!cbToWrite
916	/* Was there a hole in the peeking buffer? Drop it. */
917	\|\| !pStreamPA->pu8PeekBuf
918	/* If the buffer is done, drop it. */
919	\|\| pStreamPA->offPeekBuf == pStreamPA->cbPeekBuf)
920	{
921	pa_threaded_mainloop_lock(pThis->pMainLoop);
922	pa_stream_drop(pStreamPA->pStream);
923	pa_threaded_mainloop_unlock(pThis->pMainLoop);
924
925	pStreamPA->pu8PeekBuf = NULL;
926	}
927	}
928
929	if (RT_SUCCESS(rc))
930	{
931	if (pcxRead)
932	*pcxRead = cbReadTotal;
933	}
934
935	return rc;
936	}
937
938
939	/**
940	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
941	*/
942	static DECLCALLBACK(int) drvHostPulseAudioStreamPlay(PPDMIHOSTAUDIO pInterface,
943	PPDMAUDIOBACKENDSTREAM pStream, const void *pvBuf, uint32_t cxBuf,
944	uint32_t *pcxWritten)
945	{
946	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
947	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
948	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
949	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
950	/* pcxWritten is optional. */
951
952	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
953	PPULSEAUDIOSTREAM pPAStream = (PPULSEAUDIOSTREAM)pStream;
954
955	int rc = VINF_SUCCESS;
956
957	uint32_t cbWrittenTotal = 0;
958
959	pa_threaded_mainloop_lock(pThis->pMainLoop);
960
961	#ifdef LOG_ENABLED
962	const pa_usec_t tsNowUs = pa_rtclock_now();
963	const pa_usec_t tsDeltaPlayedUs = tsNowUs - pPAStream->tsLastReadWrittenUs;
964
965	Log3Func(("tsDeltaPlayedMs=%RU64\n", tsDeltaPlayedUs / 1000 /* ms */));
966
967	pPAStream->tsLastReadWrittenUs = tsNowUs;
968	#endif
969
970	do
971	{
972	size_t cbWriteable = pa_stream_writable_size(pPAStream->pStream);
973	if (cbWriteable == (size_t)-1)
974	{
975	rc = paError(pPAStream->pDrv, "Failed to determine output data size");
976	break;
977	}
978
979	size_t cbLeft = RT_MIN(cbWriteable, cxBuf);
980	Assert(cbLeft); /* At this point we better have something to write. */
981
982	while (cbLeft)
983	{
984	uint32_t cbChunk = cbLeft; /* Write all at once for now. */
985
986	if (pa_stream_write(pPAStream->pStream, (uint8_t )pvBuf + cbWrittenTotal, cbChunk, NULL / Cleanup callback */,
987	0, PA_SEEK_RELATIVE) < 0)
988	{
989	rc = paError(pPAStream->pDrv, "Failed to write to output stream");
990	break;
991	}
992
993	Assert(cbLeft >= cbChunk);
994	cbLeft -= cbChunk;
995	cbWrittenTotal += cbChunk;
996	}
997
998	} while (0);
999
1000	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1001
1002	if (RT_SUCCESS(rc))
1003	{
1004	if (pcxWritten)
1005	*pcxWritten = cbWrittenTotal;
1006	}
1007
1008	return rc;
1009	}
1010
1011
1012	/** @todo Implement va handling. */
1013	static int paError(PDRVHOSTPULSEAUDIO pThis, const char *szMsg)
1014	{
1015	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
1016	AssertPtrReturn(szMsg, VERR_INVALID_POINTER);
1017
1018	if (pThis->cLogErrors++ < VBOX_PULSEAUDIO_MAX_LOG_REL_ERRORS)
1019	{
1020	int rc2 = pa_context_errno(pThis->pContext);
1021	LogRel2(("PulseAudio: %s: %s\n", szMsg, pa_strerror(rc2)));
1022	}
1023
1024	/** @todo Implement some PulseAudio -> IPRT mapping here. */
1025	return VERR_GENERAL_FAILURE;
1026	}
1027
1028
1029	static void paEnumSinkCb(pa_context pCtx, const pa_sink_info pInfo, int eol, void *pvUserData)
1030	{
1031	if (eol > 0)
1032	return;
1033
1034	PPULSEAUDIOENUMCBCTX pCbCtx = (PPULSEAUDIOENUMCBCTX)pvUserData;
1035	AssertPtrReturnVoid(pCbCtx);
1036	PDRVHOSTPULSEAUDIO pThis = pCbCtx->pDrv;
1037	AssertPtrReturnVoid(pThis);
1038	if (eol < 0)
1039	{
1040	pThis->fEnumOpSuccess = false;
1041	pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0);
1042	return;
1043	}
1044
1045	AssertPtrReturnVoid(pCtx);
1046	AssertPtrReturnVoid(pInfo);
1047
1048	LogRel2(("PulseAudio: Using output sink '%s'\n", pInfo->name));
1049
1050	/** @todo Store sinks + channel mapping in callback context as soon as we have surround support. */
1051	pCbCtx->cDevOut++;
1052
1053	pThis->fEnumOpSuccess = true;
1054	pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0);
1055	}
1056
1057
1058	static void paEnumSourceCb(pa_context pCtx, const pa_source_info pInfo, int eol, void *pvUserData)
1059	{
1060	if (eol > 0)
1061	return;
1062
1063	PPULSEAUDIOENUMCBCTX pCbCtx = (PPULSEAUDIOENUMCBCTX)pvUserData;
1064	AssertPtrReturnVoid(pCbCtx);
1065	PDRVHOSTPULSEAUDIO pThis = pCbCtx->pDrv;
1066	AssertPtrReturnVoid(pThis);
1067	if (eol < 0)
1068	{
1069	pThis->fEnumOpSuccess = false;
1070	pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0);
1071	return;
1072	}
1073
1074	AssertPtrReturnVoid(pCtx);
1075	AssertPtrReturnVoid(pInfo);
1076
1077	LogRel2(("PulseAudio: Using input source '%s'\n", pInfo->name));
1078
1079	/** @todo Store sources + channel mapping in callback context as soon as we have surround support. */
1080	pCbCtx->cDevIn++;
1081
1082	pThis->fEnumOpSuccess = true;
1083	pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0);
1084	}
1085
1086
1087	static void paEnumServerCb(pa_context pCtx, const pa_server_info pInfo, void *pvUserData)
1088	{
1089	AssertPtrReturnVoid(pCtx);
1090	PPULSEAUDIOENUMCBCTX pCbCtx = (PPULSEAUDIOENUMCBCTX)pvUserData;
1091	AssertPtrReturnVoid(pCbCtx);
1092	PDRVHOSTPULSEAUDIO pThis = pCbCtx->pDrv;
1093	AssertPtrReturnVoid(pThis);
1094
1095	if (!pInfo)
1096	{
1097	pThis->fEnumOpSuccess = false;
1098	pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0);
1099	return;
1100	}
1101
1102	if (pInfo->default_sink_name)
1103	{
1104	Assert(RTStrIsValidEncoding(pInfo->default_sink_name));
1105	pCbCtx->pszDefaultSink = RTStrDup(pInfo->default_sink_name);
1106	}
1107
1108	if (pInfo->default_sink_name)
1109	{
1110	Assert(RTStrIsValidEncoding(pInfo->default_source_name));
1111	pCbCtx->pszDefaultSource = RTStrDup(pInfo->default_source_name);
1112	}
1113
1114	pThis->fEnumOpSuccess = true;
1115	pa_threaded_mainloop_signal(pThis->pMainLoop, 0);
1116	}
1117
1118
1119	static int paEnumerate(PDRVHOSTPULSEAUDIO pThis, PPDMAUDIOBACKENDCFG pCfg, uint32_t fEnum)
1120	{
1121	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
1122	AssertPtrReturn(pCfg, VERR_INVALID_POINTER);
1123
1124	PDMAUDIOBACKENDCFG Cfg;
1125	RT_ZERO(Cfg);
1126
1127	RTStrPrintf2(Cfg.szName, sizeof(Cfg.szName), "PulseAudio driver");
1128
1129	Cfg.cbStreamOut = sizeof(PULSEAUDIOSTREAM);
1130	Cfg.cbStreamIn = sizeof(PULSEAUDIOSTREAM);
1131	Cfg.cMaxStreamsOut = UINT32_MAX;
1132	Cfg.cMaxStreamsIn = UINT32_MAX;
1133
1134	PULSEAUDIOENUMCBCTX CbCtx;
1135	RT_ZERO(CbCtx);
1136
1137	CbCtx.pDrv = pThis;
1138	CbCtx.fFlags = fEnum;
1139
1140	bool fLog = (fEnum & PULSEAUDIOENUMCBFLAGS_LOG);
1141
1142	pa_threaded_mainloop_lock(pThis->pMainLoop);
1143
1144	pThis->fEnumOpSuccess = false;
1145	int rc = paWaitFor(pThis, pa_context_get_server_info(pThis->pContext, paEnumServerCb, &CbCtx));
1146	if (RT_SUCCESS(rc) && !pThis->fEnumOpSuccess)
1147	rc = VERR_AUDIO_BACKEND_INIT_FAILED; /* error code does not matter */
1148	if (RT_SUCCESS(rc))
1149	{
1150	if (CbCtx.pszDefaultSink)
1151	{
1152	if (fLog)
1153	LogRel2(("PulseAudio: Default output sink is '%s'\n", CbCtx.pszDefaultSink));
1154
1155	pThis->fEnumOpSuccess = false;
1156	rc = paWaitFor(pThis, pa_context_get_sink_info_by_name(pThis->pContext, CbCtx.pszDefaultSink,
1157	paEnumSinkCb, &CbCtx));
1158	if (RT_SUCCESS(rc) && !pThis->fEnumOpSuccess)
1159	rc = VERR_AUDIO_BACKEND_INIT_FAILED; /* error code does not matter */
1160	if ( RT_FAILURE(rc)
1161	&& fLog)
1162	{
1163	LogRel(("PulseAudio: Error enumerating properties for default output sink '%s'\n", CbCtx.pszDefaultSink));
1164	}
1165	}
1166	else if (fLog)
1167	LogRel2(("PulseAudio: No default output sink found\n"));
1168
1169	if (RT_SUCCESS(rc))
1170	{
1171	if (CbCtx.pszDefaultSource)
1172	{
1173	if (fLog)
1174	LogRel2(("PulseAudio: Default input source is '%s'\n", CbCtx.pszDefaultSource));
1175
1176	pThis->fEnumOpSuccess = false;
1177	rc = paWaitFor(pThis, pa_context_get_source_info_by_name(pThis->pContext, CbCtx.pszDefaultSource,
1178	paEnumSourceCb, &CbCtx));
1179	if ( (RT_FAILURE(rc) \|\| !pThis->fEnumOpSuccess)
1180	&& fLog)
1181	{
1182	LogRel(("PulseAudio: Error enumerating properties for default input source '%s'\n", CbCtx.pszDefaultSource));
1183	}
1184	}
1185	else if (fLog)
1186	LogRel2(("PulseAudio: No default input source found\n"));
1187	}
1188
1189	if (RT_SUCCESS(rc))
1190	{
1191	if (fLog)
1192	{
1193	LogRel2(("PulseAudio: Found %RU8 host playback device(s)\n", CbCtx.cDevOut));
1194	LogRel2(("PulseAudio: Found %RU8 host capturing device(s)\n", CbCtx.cDevIn));
1195	}
1196
1197	if (pCfg)
1198	memcpy(pCfg, &Cfg, sizeof(PDMAUDIOBACKENDCFG));
1199	}
1200
1201	if (CbCtx.pszDefaultSink)
1202	{
1203	RTStrFree(CbCtx.pszDefaultSink);
1204	CbCtx.pszDefaultSink = NULL;
1205	}
1206
1207	if (CbCtx.pszDefaultSource)
1208	{
1209	RTStrFree(CbCtx.pszDefaultSource);
1210	CbCtx.pszDefaultSource = NULL;
1211	}
1212	}
1213	else if (fLog)
1214	LogRel(("PulseAudio: Error enumerating PulseAudio server properties\n"));
1215
1216	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1217
1218	LogFlowFuncLeaveRC(rc);
1219	return rc;
1220	}
1221
1222
1223	static int paDestroyStreamIn(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA)
1224	{
1225	LogFlowFuncEnter();
1226
1227	if (pStreamPA->pStream)
1228	{
1229	pa_threaded_mainloop_lock(pThis->pMainLoop);
1230
1231	pa_stream_disconnect(pStreamPA->pStream);
1232	pa_stream_unref(pStreamPA->pStream);
1233
1234	pStreamPA->pStream = NULL;
1235
1236	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1237	}
1238
1239	return VINF_SUCCESS;
1240	}
1241
1242
1243	static int paDestroyStreamOut(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA)
1244	{
1245	if (pStreamPA->pStream)
1246	{
1247	pa_threaded_mainloop_lock(pThis->pMainLoop);
1248
1249	/* Make sure to cancel a pending draining operation, if any. */
1250	if (pStreamPA->pDrainOp)
1251	{
1252	pa_operation_cancel(pStreamPA->pDrainOp);
1253	pStreamPA->pDrainOp = NULL;
1254	}
1255
1256	pa_stream_disconnect(pStreamPA->pStream);
1257	pa_stream_unref(pStreamPA->pStream);
1258
1259	pStreamPA->pStream = NULL;
1260
1261	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1262	}
1263
1264	return VINF_SUCCESS;
1265	}
1266
1267
1268	static int paControlStreamOut(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, PDMAUDIOSTREAMCMD enmStreamCmd)
1269	{
1270	int rc = VINF_SUCCESS;
1271
1272	switch (enmStreamCmd)
1273	{
1274	case PDMAUDIOSTREAMCMD_ENABLE:
1275	case PDMAUDIOSTREAMCMD_RESUME:
1276	{
1277	pa_threaded_mainloop_lock(pThis->pMainLoop);
1278
1279	if ( pStreamPA->pDrainOp
1280	&& pa_operation_get_state(pStreamPA->pDrainOp) != PA_OPERATION_DONE)
1281	{
1282	pa_operation_cancel(pStreamPA->pDrainOp);
1283	pa_operation_unref(pStreamPA->pDrainOp);
1284
1285	pStreamPA->pDrainOp = NULL;
1286	}
1287	else
1288	{
1289	/* Uncork (resume) stream. */
1290	rc = paWaitFor(pThis, pa_stream_cork(pStreamPA->pStream, 0 /* Uncork */, paStreamCbSuccess, pStreamPA));
1291	}
1292
1293	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1294	break;
1295	}
1296
1297	case PDMAUDIOSTREAMCMD_DISABLE:
1298	case PDMAUDIOSTREAMCMD_PAUSE:
1299	{
1300	/* Pause audio output (the Pause bit of the AC97 x_CR register is set).
1301	* Note that we must return immediately from here! */
1302	pa_threaded_mainloop_lock(pThis->pMainLoop);
1303	if (!pStreamPA->pDrainOp)
1304	{
1305	rc = paWaitFor(pThis, pa_stream_trigger(pStreamPA->pStream, paStreamCbSuccess, pStreamPA));
1306	if (RT_SUCCESS(rc))
1307	pStreamPA->pDrainOp = pa_stream_drain(pStreamPA->pStream, paStreamCbDrain, pStreamPA);
1308	}
1309	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1310	break;
1311	}
1312
1313	default:
1314	rc = VERR_NOT_SUPPORTED;
1315	break;
1316	}
1317
1318	LogFlowFuncLeaveRC(rc);
1319	return rc;
1320	}
1321
1322
1323	static int paControlStreamIn(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, PDMAUDIOSTREAMCMD enmStreamCmd)
1324	{
1325	int rc = VINF_SUCCESS;
1326
1327	LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd));
1328
1329	switch (enmStreamCmd)
1330	{
1331	case PDMAUDIOSTREAMCMD_ENABLE:
1332	case PDMAUDIOSTREAMCMD_RESUME:
1333	{
1334	pa_threaded_mainloop_lock(pThis->pMainLoop);
1335	rc = paWaitFor(pThis, pa_stream_cork(pStreamPA->pStream, 0 /* Play / resume */, paStreamCbSuccess, pStreamPA));
1336	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1337	break;
1338	}
1339
1340	case PDMAUDIOSTREAMCMD_DISABLE:
1341	case PDMAUDIOSTREAMCMD_PAUSE:
1342	{
1343	pa_threaded_mainloop_lock(pThis->pMainLoop);
1344	if (pStreamPA->pu8PeekBuf) /* Do we need to drop the peek buffer?*/
1345	{
1346	pa_stream_drop(pStreamPA->pStream);
1347	pStreamPA->pu8PeekBuf = NULL;
1348	}
1349
1350	rc = paWaitFor(pThis, pa_stream_cork(pStreamPA->pStream, 1 /* Stop / pause */, paStreamCbSuccess, pStreamPA));
1351	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1352	break;
1353	}
1354
1355	default:
1356	rc = VERR_NOT_SUPPORTED;
1357	break;
1358	}
1359
1360	return rc;
1361	}
1362
1363
1364	/**
1365	* @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown}
1366	*/
1367	static DECLCALLBACK(void) drvHostPulseAudioShutdown(PPDMIHOSTAUDIO pInterface)
1368	{
1369	AssertPtrReturnVoid(pInterface);
1370
1371	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1372
1373	LogFlowFuncEnter();
1374
1375	if (pThis->pMainLoop)
1376	pa_threaded_mainloop_stop(pThis->pMainLoop);
1377
1378	if (pThis->pContext)
1379	{
1380	pa_context_disconnect(pThis->pContext);
1381	pa_context_unref(pThis->pContext);
1382	pThis->pContext = NULL;
1383	}
1384
1385	if (pThis->pMainLoop)
1386	{
1387	pa_threaded_mainloop_free(pThis->pMainLoop);
1388	pThis->pMainLoop = NULL;
1389	}
1390
1391	LogFlowFuncLeave();
1392	}
1393
1394
1395	/**
1396	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
1397	*/
1398	static DECLCALLBACK(int) drvHostPulseAudioGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
1399	{
1400	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1401	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
1402
1403	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1404
1405	return paEnumerate(pThis, pBackendCfg, PULSEAUDIOENUMCBFLAGS_LOG /* fEnum */);
1406	}
1407
1408
1409	/**
1410	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
1411	*/
1412	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvHostPulseAudioGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
1413	{
1414	RT_NOREF(enmDir);
1415	AssertPtrReturn(pInterface, PDMAUDIOBACKENDSTS_UNKNOWN);
1416
1417	return PDMAUDIOBACKENDSTS_RUNNING;
1418	}
1419
1420
1421	/**
1422	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
1423	*/
1424	static DECLCALLBACK(int) drvHostPulseAudioStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
1425	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
1426	{
1427	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1428	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
1429	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
1430	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
1431
1432	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1433	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream;
1434
1435	int rc;
1436	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
1437	rc = paCreateStreamIn (pThis, pStreamPA, pCfgReq, pCfgAcq);
1438	else if (pCfgReq->enmDir == PDMAUDIODIR_OUT)
1439	rc = paCreateStreamOut(pThis, pStreamPA, pCfgReq, pCfgAcq);
1440	else
1441	AssertFailedReturn(VERR_NOT_IMPLEMENTED);
1442
1443	if (RT_SUCCESS(rc))
1444	{
1445	pStreamPA->pCfg = DrvAudioHlpStreamCfgDup(pCfgAcq);
1446	if (!pStreamPA->pCfg)
1447	rc = VERR_NO_MEMORY;
1448	}
1449
1450	return rc;
1451	}
1452
1453
1454	/**
1455	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
1456	*/
1457	static DECLCALLBACK(int) drvHostPulseAudioStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1458	{
1459	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1460	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
1461
1462	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1463	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream;
1464
1465	if (!pStreamPA->pCfg) /* Not (yet) configured? Skip. */
1466	return VINF_SUCCESS;
1467
1468	int rc;
1469	if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_IN)
1470	rc = paDestroyStreamIn (pThis, pStreamPA);
1471	else if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_OUT)
1472	rc = paDestroyStreamOut(pThis, pStreamPA);
1473	else
1474	AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED);
1475
1476	if (RT_SUCCESS(rc))
1477	{
1478	DrvAudioHlpStreamCfgFree(pStreamPA->pCfg);
1479	pStreamPA->pCfg = NULL;
1480	}
1481
1482	return rc;
1483	}
1484
1485
1486	/**
1487	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl}
1488	*/
1489	static DECLCALLBACK(int) drvHostPulseAudioStreamControl(PPDMIHOSTAUDIO pInterface,
1490	PPDMAUDIOBACKENDSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
1491	{
1492	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1493	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
1494
1495	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1496	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream;
1497
1498	if (!pStreamPA->pCfg) /* Not (yet) configured? Skip. */
1499	return VINF_SUCCESS;
1500
1501	int rc;
1502	if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_IN)
1503	rc = paControlStreamIn (pThis, pStreamPA, enmStreamCmd);
1504	else if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_OUT)
1505	rc = paControlStreamOut(pThis, pStreamPA, enmStreamCmd);
1506	else
1507	AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED);
1508
1509	return rc;
1510	}
1511
1512
1513	static uint32_t paStreamGetAvail(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA)
1514	{
1515	pa_threaded_mainloop_lock(pThis->pMainLoop);
1516
1517	uint32_t cbAvail = 0;
1518
1519	if (PA_STREAM_IS_GOOD(pa_stream_get_state(pStreamPA->pStream)))
1520	{
1521	if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_IN)
1522	{
1523	cbAvail = (uint32_t)pa_stream_readable_size(pStreamPA->pStream);
1524	Log3Func(("cbReadable=%RU32\n", cbAvail));
1525	}
1526	else if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_OUT)
1527	{
1528	size_t cbWritable = pa_stream_writable_size(pStreamPA->pStream);
1529
1530	Log3Func(("cbWritable=%zu, maxLength=%RU32, minReq=%RU32\n",
1531	cbWritable, pStreamPA->BufAttr.maxlength, pStreamPA->BufAttr.minreq));
1532
1533	/* Don't report more writable than the PA server can handle. */
1534	if (cbWritable > pStreamPA->BufAttr.maxlength)
1535	cbWritable = pStreamPA->BufAttr.maxlength;
1536
1537	cbAvail = (uint32_t)cbWritable;
1538	}
1539	else
1540	AssertFailed();
1541	}
1542
1543	pa_threaded_mainloop_unlock(pThis->pMainLoop);
1544
1545	return cbAvail;
1546	}
1547
1548
1549	/**
1550	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
1551	*/
1552	static DECLCALLBACK(uint32_t) drvHostPulseAudioStreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1553	{
1554	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1555	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream;
1556
1557	return paStreamGetAvail(pThis, pStreamPA);
1558	}
1559
1560
1561	/**
1562	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
1563	*/
1564	static DECLCALLBACK(uint32_t) drvHostPulseAudioStreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1565	{
1566	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1567	PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream;
1568
1569	return paStreamGetAvail(pThis, pStreamPA);
1570	}
1571
1572
1573	/**
1574	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus}
1575	*/
1576	static DECLCALLBACK(PDMAUDIOSTREAMSTS) drvHostPulseAudioStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1577	{
1578	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1579	RT_NOREF(pStream);
1580
1581	PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface);
1582
1583	PDMAUDIOSTREAMSTS strmSts = PDMAUDIOSTREAMSTS_FLAG_NONE;
1584
1585	/* Check PulseAudio's general status. */
1586	if ( pThis->pContext
1587	&& PA_CONTEXT_IS_GOOD(pa_context_get_state(pThis->pContext)))
1588	{
1589	strmSts = PDMAUDIOSTREAMSTS_FLAG_INITIALIZED \| PDMAUDIOSTREAMSTS_FLAG_ENABLED;
1590	}
1591
1592	return strmSts;
1593	}
1594
1595
1596	/**
1597	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate}
1598	*/
1599	static DECLCALLBACK(int) drvHostPulseAudioStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1600	{
1601	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1602	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
1603
1604	LogFlowFuncEnter();
1605
1606	/* Nothing to do here for PulseAudio. */
1607	return VINF_SUCCESS;
1608	}
1609
1610
1611	/**
1612	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
1613	*/
1614	static DECLCALLBACK(void ) drvHostPulseAudioQueryInterface(PPDMIBASE pInterface, const char pszIID)
1615	{
1616	AssertPtrReturn(pInterface, NULL);
1617	AssertPtrReturn(pszIID, NULL);
1618
1619	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
1620	PDRVHOSTPULSEAUDIO pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTPULSEAUDIO);
1621	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
1622	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
1623
1624	return NULL;
1625	}
1626
1627
1628	/**
1629	* Destructs a PulseAudio Audio driver instance.
1630	*
1631	* @copydoc FNPDMDRVDESTRUCT
1632	*/
1633	static DECLCALLBACK(void) drvHostPulseAudioDestruct(PPDMDRVINS pDrvIns)
1634	{
1635	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
1636	LogFlowFuncEnter();
1637	}
1638
1639
1640	/**
1641	* Constructs a PulseAudio Audio driver instance.
1642	*
1643	* @copydoc FNPDMDRVCONSTRUCT
1644	*/
1645	static DECLCALLBACK(int) drvHostPulseAudioConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
1646	{
1647	RT_NOREF(pCfg, fFlags);
1648	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
1649	AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
1650
1651	PDRVHOSTPULSEAUDIO pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTPULSEAUDIO);
1652	LogRel(("Audio: Initializing PulseAudio driver\n"));
1653
1654	pThis->pDrvIns = pDrvIns;
1655	/* IBase */
1656	pDrvIns->IBase.pfnQueryInterface = drvHostPulseAudioQueryInterface;
1657	/* IHostAudio */
1658	PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvHostPulseAudio);
1659
1660	int rc2 = CFGMR3QueryString(pCfg, "StreamName", pThis->szStreamName, sizeof(pThis->szStreamName));
1661	AssertMsgRCReturn(rc2, ("Confguration error: No/bad \"StreamName\" value, rc=%Rrc\n", rc2), rc2);
1662
1663	return VINF_SUCCESS;
1664	}
1665
1666
1667	/**
1668	* Pulse audio driver registration record.
1669	*/
1670	const PDMDRVREG g_DrvHostPulseAudio =
1671	{
1672	/* u32Version */
1673	PDM_DRVREG_VERSION,
1674	/* szName */
1675	"PulseAudio",
1676	/* szRCMod */
1677	"",
1678	/* szR0Mod */
1679	"",
1680	/* pszDescription */
1681	"Pulse Audio host driver",
1682	/* fFlags */
1683	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1684	/* fClass. */
1685	PDM_DRVREG_CLASS_AUDIO,
1686	/* cMaxInstances */
1687	~0U,
1688	/* cbInstance */
1689	sizeof(DRVHOSTPULSEAUDIO),
1690	/* pfnConstruct */
1691	drvHostPulseAudioConstruct,
1692	/* pfnDestruct */
1693	drvHostPulseAudioDestruct,
1694	/* pfnRelocate */
1695	NULL,
1696	/* pfnIOCtl */
1697	NULL,
1698	/* pfnPowerOn */
1699	NULL,
1700	/* pfnReset */
1701	NULL,
1702	/* pfnSuspend */
1703	NULL,
1704	/* pfnResume */
1705	NULL,
1706	/* pfnAttach */
1707	NULL,
1708	/* pfnDetach */
1709	NULL,
1710	/* pfnPowerOff */
1711	NULL,
1712	/* pfnSoftReset */
1713	NULL,
1714	/* u32EndVersion */
1715	PDM_DRVREG_VERSION
1716	};
1717
1718	#if 0 /* unused */
1719	static struct audio_option pulse_options[] =
1720	{
1721	{"DAC_MS", AUD_OPT_INT, &s_pulseCfg.buffer_msecs_out,
1722	"DAC period size in milliseconds", NULL, 0},
1723	{"ADC_MS", AUD_OPT_INT, &s_pulseCfg.buffer_msecs_in,
1724	"ADC period size in milliseconds", NULL, 0}
1725	};
1726	#endif
1727

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source: vbox/trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp@ 75802

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