DrvAudioVideoRec.cpp@ 71848

Last change on this file since 71848 was 70644, checked in by vboxsync, 7 years ago
Audio/Main: More code needed for attaching / detaching host backends at runtime.
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1	/* $Id: DrvAudioVideoRec.cpp 70644 2018-01-19 12:20:33Z vboxsync $ */
2	/** @file
3	* Video recording audio backend for Main.
4	*/
5
6	/*
7	* Copyright (C) 2016-2017 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	/* This code makes use of the Opus codec (libopus):
19	*
20	* Copyright 2001-2011 Xiph.Org, Skype Limited, Octasic,
21	* Jean-Marc Valin, Timothy B. Terriberry,
22	* CSIRO, Gregory Maxwell, Mark Borgerding,
23	* Erik de Castro Lopo
24	*
25	* Redistribution and use in source and binary forms, with or without
26	* modification, are permitted provided that the following conditions
27	* are met:
28	*
29	* - Redistributions of source code must retain the above copyright
30	* notice, this list of conditions and the following disclaimer.
31	*
32	* - Redistributions in binary form must reproduce the above copyright
33	* notice, this list of conditions and the following disclaimer in the
34	* documentation and/or other materials provided with the distribution.
35	*
36	* - Neither the name of Internet Society, IETF or IETF Trust, nor the
37	* names of specific contributors, may be used to endorse or promote
38	* products derived from this software without specific prior written
39	* permission.
40	*
41	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
42	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
43	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
44	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
45	* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
46	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
47	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
48	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
49	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
50	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
51	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
52	*
53	* Opus is subject to the royalty-free patent licenses which are
54	* specified at:
55	*
56	* Xiph.Org Foundation:
57	* https://datatracker.ietf.org/ipr/1524/
58	*
59	* Microsoft Corporation:
60	* https://datatracker.ietf.org/ipr/1914/
61	*
62	* Broadcom Corporation:
63	* https://datatracker.ietf.org/ipr/1526/
64	*
65	*/
66
67	/**
68	* This driver is part of Main and is responsible for providing audio
69	* data to Main's video capturing feature.
70	*
71	* The driver itself implements a PDM host audio backend, which in turn
72	* provides the driver with the required audio data and audio events.
73	*
74	* For now there is support for the following destinations (called "sinks"):
75	*
76	* - Direct writing of .webm files to the host.
77	* - Communicating with Main via the Console object to send the encoded audio data to.
78	* The Console object in turn then will route the data to the Display / video capturing interface then.
79	*/
80
81
82	/*********************************************************************************************************************************
83	* Header Files *
84	*********************************************************************************************************************************/
85	#define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO
86	#include "LoggingNew.h"
87
88	#include "DrvAudioVideoRec.h"
89	#include "ConsoleImpl.h"
90
91	#include "../../Devices/Audio/DrvAudio.h"
92	#include "WebMWriter.h"
93
94	#include <iprt/mem.h>
95	#include <iprt/cdefs.h>
96
97	#include <VBox/vmm/pdmaudioifs.h>
98	#include <VBox/vmm/pdmdrv.h>
99	#include <VBox/vmm/cfgm.h>
100	#include <VBox/err.h>
101
102	#ifdef VBOX_WITH_LIBOPUS
103	# include <opus.h>
104	#endif
105
106
107	/*********************************************************************************************************************************
108	* Defines *
109	*********************************************************************************************************************************/
110
111	#define AVREC_OPUS_HZ_MAX 48000 /** Maximum sample rate (in Hz) Opus can handle. */
112
113
114	/*********************************************************************************************************************************
115	* Structures and Typedefs *
116	*********************************************************************************************************************************/
117
118	/**
119	* Enumeration for specifying the recording container type.
120	*/
121	typedef enum AVRECCONTAINERTYPE
122	{
123	/** Unknown / invalid container type. */
124	AVRECCONTAINERTYPE_UNKNOWN = 0,
125	/** Recorded data goes to Main / Console. */
126	AVRECCONTAINERTYPE_MAIN_CONSOLE = 1,
127	/** Recorded data will be written to a .webm file. */
128	AVRECCONTAINERTYPE_WEBM = 2
129	} AVRECCONTAINERTYPE;
130
131	/**
132	* Structure for keeping generic container parameters.
133	*/
134	typedef struct AVRECCONTAINERPARMS
135	{
136	/** The container's type. */
137	AVRECCONTAINERTYPE enmType;
138
139	} AVRECCONTAINERPARMS, *PAVRECCONTAINERPARMS;
140
141	/**
142	* Structure for keeping container-specific data.
143	*/
144	typedef struct AVRECCONTAINER
145	{
146	/** Generic container parameters. */
147	AVRECCONTAINERPARMS Parms;
148
149	union
150	{
151	struct
152	{
153	/** Pointer to Console. */
154	Console *pConsole;
155	} Main;
156
157	struct
158	{
159	/** Pointer to WebM container to write recorded audio data to.
160	* See the AVRECMODE enumeration for more information. */
161	WebMWriter *pWebM;
162	/** Assigned track number from WebM container. */
163	uint8_t uTrack;
164	} WebM;
165	};
166	} AVRECCONTAINER, *PAVRECCONTAINER;
167
168	/**
169	* Structure for keeping generic codec parameters.
170	*/
171	typedef struct AVRECCODECPARMS
172	{
173	/** The encoding rate to use. */
174	uint32_t uHz;
175	/** Number of audio channels to encode.
176	* Currently we only supported stereo (2) channels. */
177	uint8_t cChannels;
178	/** Bits per sample. */
179	uint8_t cBits;
180	/** The codec's bitrate. 0 if not used / cannot be specified. */
181	uint32_t uBitrate;
182
183	} AVRECCODECPARMS, *PAVRECCODECPARMS;
184
185	/**
186	* Structure for keeping codec-specific data.
187	*/
188	typedef struct AVRECCODEC
189	{
190	/** Generic codec parameters. */
191	AVRECCODECPARMS Parms;
192	union
193	{
194	#ifdef VBOX_WITH_LIBOPUS
195	struct
196	{
197	/** Encoder we're going to use. */
198	OpusEncoder *pEnc;
199	/** Time (in ms) an (encoded) frame takes.
200	*
201	* For Opus, valid frame sizes are:
202	* ms Frame size
203	* 2.5 120
204	* 5 240
205	* 10 480
206	* 20 (Default) 960
207	* 40 1920
208	* 60 2880
209	*/
210	uint32_t msFrame;
211	} Opus;
212	#endif /* VBOX_WITH_LIBOPUS */
213	};
214
215	#ifdef VBOX_WITH_STATISTICS /** @todo Make these real STAM values. */
216	struct
217	{
218	/** Number of frames encoded. */
219	uint64_t cEncFrames;
220	/** Total time (in ms) of already encoded audio data. */
221	uint64_t msEncTotal;
222	} STAM;
223	#endif /* VBOX_WITH_STATISTICS */
224
225	} AVRECCODEC, *PAVRECCODEC;
226
227	typedef struct AVRECSINK
228	{
229	/** @todo Add types for container / codec as soon as we implement more stuff. */
230
231	/** Container data to use for data processing. */
232	AVRECCONTAINER Con;
233	/** Codec data this sink uses for encoding. */
234	AVRECCODEC Codec;
235	/** Timestamp (in ms) of when the sink was created. */
236	uint64_t tsStartMs;
237	} AVRECSINK, *PAVRECSINK;
238
239	/**
240	* Audio video recording (output) stream.
241	*/
242	typedef struct AVRECSTREAM
243	{
244	/** The stream's acquired configuration. */
245	PPDMAUDIOSTREAMCFG pCfg;
246	/** (Audio) frame buffer. */
247	PRTCIRCBUF pCircBuf;
248	/** Pointer to sink to use for writing. */
249	PAVRECSINK pSink;
250	/** Last encoded PTS (in ms). */
251	uint64_t uLastPTSMs;
252	} AVRECSTREAM, *PAVRECSTREAM;
253
254	/**
255	* Video recording audio driver instance data.
256	*/
257	typedef struct DRVAUDIOVIDEOREC
258	{
259	/** Pointer to audio video recording object. */
260	AudioVideoRec *pAudioVideoRec;
261	/** Pointer to the driver instance structure. */
262	PPDMDRVINS pDrvIns;
263	/** Pointer to host audio interface. */
264	PDMIHOSTAUDIO IHostAudio;
265	/** Pointer to the console object. */
266	ComObjPtr<Console> pConsole;
267	/** Pointer to the DrvAudio port interface that is above us. */
268	PPDMIAUDIOCONNECTOR pDrvAudio;
269	/** The driver's sink for writing output to. */
270	AVRECSINK Sink;
271	} DRVAUDIOVIDEOREC, *PDRVAUDIOVIDEOREC;
272
273	/** Makes DRVAUDIOVIDEOREC out of PDMIHOSTAUDIO. */
274	#define PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface) \
275	( (PDRVAUDIOVIDEOREC)((uintptr_t)pInterface - RT_OFFSETOF(DRVAUDIOVIDEOREC, IHostAudio)) )
276
277	/**
278	* Initializes a recording sink.
279	*
280	* @returns IPRT status code.
281	* @param pThis Driver instance.
282	* @param pSink Sink to initialize.
283	* @param pConParms Container parameters to set.
284	* @param pCodecParms Codec parameters to set.
285	*/
286	static int avRecSinkInit(PDRVAUDIOVIDEOREC pThis, PAVRECSINK pSink, PAVRECCONTAINERPARMS pConParms, PAVRECCODECPARMS pCodecParms)
287	{
288	uint32_t uHz = pCodecParms->uHz;
289	uint8_t cBits = pCodecParms->cBits;
290	uint8_t cChannels = pCodecParms->cChannels;
291	uint32_t uBitrate = pCodecParms->uBitrate;
292
293	/* Opus only supports certain input sample rates in an efficient manner.
294	* So make sure that we use those by resampling the data to the requested rate. */
295	if (uHz > 24000) uHz = AVREC_OPUS_HZ_MAX;
296	else if (uHz > 16000) uHz = 24000;
297	else if (uHz > 12000) uHz = 16000;
298	else if (uHz > 8000 ) uHz = 12000;
299	else uHz = 8000;
300
301	if (cChannels > 2)
302	{
303	LogRel(("VideoRec: More than 2 (stereo) channels are not supported at the moment\n"));
304	cChannels = 2;
305	}
306
307	LogRel2(("VideoRec: Recording audio in %RU16Hz, %RU8 channels, %RU32 bitrate\n", uHz, cChannels, uBitrate));
308
309	int orc;
310	OpusEncoder *pEnc = opus_encoder_create(uHz, cChannels, OPUS_APPLICATION_AUDIO, &orc);
311	if (orc != OPUS_OK)
312	{
313	LogRel(("VideoRec: Audio codec failed to initialize: %s\n", opus_strerror(orc)));
314	return VERR_AUDIO_BACKEND_INIT_FAILED;
315	}
316
317	AssertPtr(pEnc);
318
319	opus_encoder_ctl(pEnc, OPUS_SET_BITRATE(uBitrate));
320	if (orc != OPUS_OK)
321	{
322	opus_encoder_destroy(pEnc);
323	pEnc = NULL;
324
325	LogRel(("VideoRec: Audio codec failed to set bitrate (%RU32): %s\n", uBitrate, opus_strerror(orc)));
326	return VERR_AUDIO_BACKEND_INIT_FAILED;
327	}
328
329	int rc = VINF_SUCCESS;
330
331	try
332	{
333	switch (pConParms->enmType)
334	{
335	case AVRECCONTAINERTYPE_MAIN_CONSOLE:
336	{
337	if (pThis->pConsole)
338	{
339	pSink->Con.Main.pConsole = pThis->pConsole;
340	}
341	else
342	rc = VERR_NOT_SUPPORTED;
343	break;
344	}
345
346	case AVRECCONTAINERTYPE_WEBM:
347	{
348	#ifdef VBOX_AUDIO_DEBUG_DUMP_PCM_DATA
349	/* If we only record audio, create our own WebM writer instance here. */
350	if (!pSink->Con.WebM.pWebM) /* Do we already have our WebM writer instance? */
351	{
352	char szFile[RTPATH_MAX];
353	if (RTStrPrintf(szFile, sizeof(szFile), "%s%s",
354	VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH, "DrvAudioVideoRec.webm"))
355	{
356	/** @todo Add sink name / number to file name. */
357
358	pSink->Con.WebM.pWebM = new WebMWriter();
359	rc = pSink->Con.WebM.pWebM->Create(szFile,
360	/** @todo Add option to add some suffix if file exists instead of overwriting? */
361	RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_NONE,
362	WebMWriter::AudioCodec_Opus, WebMWriter::VideoCodec_None);
363	if (RT_SUCCESS(rc))
364	{
365	rc = pSink->Con.WebM.pWebM->AddAudioTrack(uHz, cChannels, cBits,
366	&pSink->Con.WebM.uTrack);
367	if (RT_SUCCESS(rc))
368	{
369	LogRel(("VideoRec: Recording audio to file '%s'\n", szFile));
370	}
371	else
372	LogRel(("VideoRec: Error creating audio track for file '%s' (%Rrc)\n", szFile, rc));
373	}
374	else
375	LogRel(("VideoRec: Error creating audio file '%s' (%Rrc)\n", szFile, rc));
376	}
377	else
378	{
379	AssertFailed(); /* Should never happen. */
380	LogRel(("VideoRec: Error creating audio file path\n"));
381	}
382	}
383	#else
384	rc = VERR_NOT_SUPPORTED;
385	#endif /* VBOX_AUDIO_DEBUG_DUMP_PCM_DATA */
386	break;
387	}
388
389	default:
390	rc = VERR_NOT_SUPPORTED;
391	break;
392	}
393	}
394	catch (std::bad_alloc)
395	{
396	#ifdef VBOX_AUDIO_DEBUG_DUMP_PCM_DATA
397	rc = VERR_NO_MEMORY;
398	#endif
399	}
400
401	if (RT_SUCCESS(rc))
402	{
403	pSink->Con.Parms.enmType = pConParms->enmType;
404
405	pSink->Codec.Parms.uHz = uHz;
406	pSink->Codec.Parms.cChannels = cChannels;
407	pSink->Codec.Parms.cBits = cBits;
408	pSink->Codec.Parms.uBitrate = uBitrate;
409
410	pSink->Codec.Opus.pEnc = pEnc;
411	pSink->Codec.Opus.msFrame = 20; /** @todo 20 ms of audio data. Make this configurable? */
412
413	#ifdef VBOX_WITH_STATISTICS
414	pSink->Codec.STAM.cEncFrames = 0;
415	pSink->Codec.STAM.msEncTotal = 0;
416	#endif
417
418	pSink->tsStartMs = RTTimeMilliTS();
419	}
420	else
421	{
422	if (pEnc)
423	{
424	opus_encoder_destroy(pEnc);
425	pEnc = NULL;
426	}
427
428	LogRel(("VideoRec: Error creating sink (%Rrc)\n", rc));
429	}
430
431	return rc;
432	}
433
434
435	/**
436	* Shuts down (closes) a recording sink,
437	*
438	* @returns IPRT status code.
439	* @param pSink Recording sink to shut down.
440	*/
441	static void avRecSinkShutdown(PAVRECSINK pSink)
442	{
443	AssertPtrReturnVoid(pSink);
444
445	#ifdef VBOX_WITH_LIBOPUS
446	if (pSink->Codec.Opus.pEnc)
447	{
448	opus_encoder_destroy(pSink->Codec.Opus.pEnc);
449	pSink->Codec.Opus.pEnc = NULL;
450	}
451	#endif
452	switch (pSink->Con.Parms.enmType)
453	{
454	case AVRECCONTAINERTYPE_WEBM:
455	{
456	if (pSink->Con.WebM.pWebM)
457	{
458	LogRel2(("VideoRec: Finished recording audio to file '%s' (%zu bytes)\n",
459	pSink->Con.WebM.pWebM->GetFileName().c_str(), pSink->Con.WebM.pWebM->GetFileSize()));
460
461	int rc2 = pSink->Con.WebM.pWebM->Close();
462	AssertRC(rc2);
463
464	delete pSink->Con.WebM.pWebM;
465	pSink->Con.WebM.pWebM = NULL;
466	}
467	break;
468	}
469
470	case AVRECCONTAINERTYPE_MAIN_CONSOLE:
471	default:
472	break;
473	}
474	}
475
476
477	/**
478	* Creates an audio output stream and associates it with the specified recording sink.
479	*
480	* @returns IPRT status code.
481	* @param pThis Driver instance.
482	* @param pStreamAV Audio output stream to create.
483	* @param pSink Recording sink to associate audio output stream to.
484	* @param pCfgReq Requested configuration by the audio backend.
485	* @param pCfgAcq Acquired configuration by the audio output stream.
486	*/
487	static int avRecCreateStreamOut(PDRVAUDIOVIDEOREC pThis, PAVRECSTREAM pStreamAV,
488	PAVRECSINK pSink, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
489	{
490	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
491	AssertPtrReturn(pStreamAV, VERR_INVALID_POINTER);
492	AssertPtrReturn(pSink, VERR_INVALID_POINTER);
493	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
494	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
495
496	if (pCfgReq->DestSource.Dest != PDMAUDIOPLAYBACKDEST_FRONT)
497	{
498	AssertFailed();
499
500	if (pCfgAcq)
501	pCfgAcq->cFrameBufferHint = 0;
502
503	LogRel2(("VideoRec: Support for surround audio not implemented yet\n"));
504	return VERR_NOT_SUPPORTED;
505	}
506
507	int rc = VINF_SUCCESS;
508
509	#ifdef VBOX_WITH_LIBOPUS
510	const unsigned cFrames = 2; /** @todo Use the PreRoll param for that? */
511
512	const uint32_t csFrame = pSink->Codec.Parms.uHz / (1000 /* s in ms */ / pSink->Codec.Opus.msFrame);
513	const uint32_t cbFrame = csFrame * pSink->Codec.Parms.cChannels * (pSink->Codec.Parms.cBits / 8 /* Bytes */);
514
515	rc = RTCircBufCreate(&pStreamAV->pCircBuf, cbFrame * cFrames);
516	if (RT_SUCCESS(rc))
517	{
518	pStreamAV->pSink = pSink; /* Assign sink to stream. */
519	pStreamAV->uLastPTSMs = 0;
520
521	if (pCfgAcq)
522	{
523	/* Make sure to let the driver backend know that we need the audio data in
524	* a specific sampling rate Opus is optimized for. */
525	pCfgAcq->Props.uHz = pSink->Codec.Parms.uHz;
526	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBits, pCfgAcq->Props.cChannels);
527	pCfgAcq->cFrameBufferHint = _4K; /** @todo Make this configurable. */
528	}
529	}
530	#else
531	RT_NOREF(pThis, pSink, pStreamAV, pCfgReq, pCfgAcq);
532	rc = VERR_NOT_SUPPORTED;
533	#endif /* VBOX_WITH_LIBOPUS */
534
535	LogFlowFuncLeaveRC(rc);
536	return rc;
537	}
538
539
540	/**
541	* Destroys (closes) an audio output stream.
542	*
543	* @returns IPRT status code.
544	* @param pThis Driver instance.
545	* @param pStreamAV Audio output stream to destroy.
546	*/
547	static int avRecDestroyStreamOut(PDRVAUDIOVIDEOREC pThis, PAVRECSTREAM pStreamAV)
548	{
549	RT_NOREF(pThis);
550
551	if (pStreamAV->pCircBuf)
552	{
553	RTCircBufDestroy(pStreamAV->pCircBuf);
554	pStreamAV->pCircBuf = NULL;
555	}
556
557	return VINF_SUCCESS;
558	}
559
560
561	/**
562	* Controls an audio output stream
563	*
564	* @returns IPRT status code.
565	* @param pThis Driver instance.
566	* @param pStreamAV Audio output stream to control.
567	* @param enmStreamCmd Stream command to issue.
568	*/
569	static int avRecControlStreamOut(PDRVAUDIOVIDEOREC pThis,
570	PAVRECSTREAM pStreamAV, PDMAUDIOSTREAMCMD enmStreamCmd)
571	{
572	RT_NOREF(pThis, pStreamAV);
573
574	switch (enmStreamCmd)
575	{
576	case PDMAUDIOSTREAMCMD_ENABLE:
577	case PDMAUDIOSTREAMCMD_DISABLE:
578	case PDMAUDIOSTREAMCMD_RESUME:
579	case PDMAUDIOSTREAMCMD_PAUSE:
580	break;
581
582	default:
583	AssertMsgFailed(("Invalid command %ld\n", enmStreamCmd));
584	break;
585	}
586
587	return VINF_SUCCESS;
588	}
589
590
591	/**
592	* @interface_method_impl{PDMIHOSTAUDIO,pfnInit}
593	*/
594	static DECLCALLBACK(int) drvAudioVideoRecInit(PPDMIHOSTAUDIO pInterface)
595	{
596	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
597
598	LogFlowFuncEnter();
599
600	PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
601
602	AVRECCONTAINERPARMS ContainerParms;
603	ContainerParms.enmType = AVRECCONTAINERTYPE_MAIN_CONSOLE; /** @todo Make this configurable. */
604
605	AVRECCODECPARMS CodecParms;
606	CodecParms.uHz = AVREC_OPUS_HZ_MAX; /** @todo Make this configurable. */
607	CodecParms.cChannels = 2; /** @todo Make this configurable. */
608	CodecParms.cBits = 16; /** @todo Make this configurable. */
609	CodecParms.uBitrate = 196000; /** @todo Make this configurable. */
610
611	int rc = avRecSinkInit(pThis, &pThis->Sink, &ContainerParms, &CodecParms);
612	if (RT_FAILURE(rc))
613	{
614	LogRel(("VideoRec: Audio recording driver failed to initialize, rc=%Rrc\n", rc));
615	}
616	else
617	LogRel2(("VideoRec: Audio recording driver initialized\n"));
618
619	return rc;
620	}
621
622
623	/**
624	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
625	*/
626	static DECLCALLBACK(int) drvAudioVideoRecStreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
627	void pvBuf, uint32_t cxBuf, uint32_t pcxRead)
628	{
629	RT_NOREF(pInterface, pStream, pvBuf, cxBuf);
630
631	if (pcxRead)
632	*pcxRead = 0;
633
634	return VINF_SUCCESS;
635	}
636
637
638	/**
639	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
640	*/
641	static DECLCALLBACK(int) drvAudioVideoRecStreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
642	const void pvBuf, uint32_t cxBuf, uint32_t pcxWritten)
643	{
644	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
645	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
646	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
647	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
648	/* pcxWritten is optional. */
649
650	PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
651	RT_NOREF(pThis);
652	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
653
654	int rc = VINF_SUCCESS;
655
656	uint32_t cbWrittenTotal = 0;
657
658	/*
659	* Call the encoder with the data.
660	*/
661	#ifdef VBOX_WITH_LIBOPUS
662	PAVRECSINK pSink = pStreamAV->pSink;
663	AssertPtr(pSink);
664	PRTCIRCBUF pCircBuf = pStreamAV->pCircBuf;
665	AssertPtr(pCircBuf);
666
667	void *pvCircBuf;
668	size_t cbCircBuf;
669
670	uint32_t cbToWrite = cxBuf;
671
672	/*
673	* Fetch as much as we can into our internal ring buffer.
674	*/
675	while ( cbToWrite
676	&& RTCircBufFree(pCircBuf))
677	{
678	RTCircBufAcquireWriteBlock(pCircBuf, cbToWrite, &pvCircBuf, &cbCircBuf);
679
680	if (cbCircBuf)
681	{
682	memcpy(pvCircBuf, (uint8_t *)pvBuf + cbWrittenTotal, cbCircBuf),
683	cbWrittenTotal += (uint32_t)cbCircBuf;
684	Assert(cbToWrite >= cbCircBuf);
685	cbToWrite -= (uint32_t)cbCircBuf;
686	}
687
688	RTCircBufReleaseWriteBlock(pCircBuf, cbCircBuf);
689
690	if ( RT_FAILURE(rc)
691	\|\| !cbCircBuf)
692	{
693	break;
694	}
695	}
696
697	/*
698	* Process our internal ring buffer and encode the data.
699	*/
700
701	uint8_t abSrc[_64K]; /** @todo Fix! */
702	size_t cbSrc;
703
704	const uint32_t csFrame = pSink->Codec.Parms.uHz / (1000 /* s in ms */ / pSink->Codec.Opus.msFrame);
705	const uint32_t cbFrame = csFrame * pSink->Codec.Parms.cChannels * (pSink->Codec.Parms.cBits / 8 /* Bytes */);
706
707	/* Only encode data if we have data for the given time period (or more). */
708	while (RTCircBufUsed(pCircBuf) >= cbFrame)
709	{
710	cbSrc = 0;
711
712	while (cbSrc < cbFrame)
713	{
714	RTCircBufAcquireReadBlock(pCircBuf, cbFrame - cbSrc, &pvCircBuf, &cbCircBuf);
715
716	if (cbCircBuf)
717	{
718	memcpy(&abSrc[cbSrc], pvCircBuf, cbCircBuf);
719
720	cbSrc += cbCircBuf;
721	Assert(cbSrc <= sizeof(abSrc));
722	}
723
724	RTCircBufReleaseReadBlock(pCircBuf, cbCircBuf);
725
726	if (!cbCircBuf)
727	break;
728	}
729
730	# ifdef VBOX_AUDIO_DEBUG_DUMP_PCM_DATA
731	RTFILE fh;
732	RTFileOpen(&fh, VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH "DrvAudioVideoRec.pcm",
733	RTFILE_O_OPEN_CREATE \| RTFILE_O_APPEND \| RTFILE_O_WRITE \| RTFILE_O_DENY_NONE);
734	RTFileWrite(fh, abSrc, cbSrc, NULL);
735	RTFileClose(fh);
736	# endif
737
738	Assert(cbSrc == cbFrame);
739
740	/*
741	* Opus always encodes PER FRAME, that is, exactly 2.5, 5, 10, 20, 40 or 60 ms of audio data.
742	*
743	* A packet can have up to 120ms worth of audio data.
744	* Anything > 120ms of data will result in a "corrupted package" error message by
745	* by decoding application.
746	*/
747	uint8_t abDst[_64K]; /** @todo Fix! */
748	size_t cbDst = sizeof(abDst);
749
750	/* Call the encoder to encode one frame per iteration. */
751	opus_int32 cbWritten = opus_encode(pSink->Codec.Opus.pEnc,
752	(opus_int16 *)abSrc, csFrame, abDst, (opus_int32)cbDst);
753	if (cbWritten > 0)
754	{
755	/* Get overall frames encoded. */
756	const uint32_t cEncFrames = opus_packet_get_nb_frames(abDst, cbWritten);
757
758	# ifdef VBOX_WITH_STATISTICS
759	pSink->Codec.STAM.cEncFrames += cEncFrames;
760	pSink->Codec.STAM.msEncTotal += pSink->Codec.Opus.msFrame * cEncFrames;
761
762	LogFunc(("%RU64ms [%RU64 frames]: cbSrc=%zu, cbDst=%zu, cEncFrames=%RU32\n",
763	pSink->Codec.STAM.msEncTotal, pSink->Codec.STAM.cEncFrames, cbSrc, cbDst, cEncFrames));
764	# endif
765	Assert((uint32_t)cbWritten <= cbDst);
766	cbDst = RT_MIN((uint32_t)cbWritten, cbDst); /* Update cbDst to actual bytes encoded (written). */
767
768	Assert(cEncFrames == 1); /* At the moment we encode exactly one frame per frame. */
769
770	if (pStreamAV->uLastPTSMs == 0)
771	pStreamAV->uLastPTSMs = RTTimeMilliTS() - pSink->tsStartMs;
772
773	const uint64_t uDurationMs = pSink->Codec.Opus.msFrame * cEncFrames;
774	const uint64_t uPTSMs = pStreamAV->uLastPTSMs + uDurationMs;
775
776	pStreamAV->uLastPTSMs += uDurationMs;
777
778	switch (pSink->Con.Parms.enmType)
779	{
780	case AVRECCONTAINERTYPE_MAIN_CONSOLE:
781	{
782	HRESULT hr = pSink->Con.Main.pConsole->i_audioVideoRecSendAudio(abDst, cbDst, uPTSMs);
783	Assert(hr == S_OK);
784	RT_NOREF(hr);
785
786	break;
787	}
788
789	case AVRECCONTAINERTYPE_WEBM:
790	{
791	WebMWriter::BlockData_Opus blockData = { abDst, cbDst, uPTSMs };
792	rc = pSink->Con.WebM.pWebM->WriteBlock(pSink->Con.WebM.uTrack, &blockData, sizeof(blockData));
793	AssertRC(rc);
794
795	break;
796	}
797
798	default:
799	AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED);
800	break;
801	}
802	}
803	else if (cbWritten < 0)
804	{
805	AssertMsgFailed(("Encoding failed: %s\n", opus_strerror(cbWritten)));
806	rc = VERR_INVALID_PARAMETER;
807	}
808
809	if (RT_FAILURE(rc))
810	break;
811	}
812
813	if (pcxWritten)
814	*pcxWritten = cbWrittenTotal;
815	#else
816	/* Report back all data as being processed. */
817	if (pcxWritten)
818	*pcxWritten = cxBuf;
819
820	rc = VERR_NOT_SUPPORTED;
821	#endif /* VBOX_WITH_LIBOPUS */
822
823	LogFlowFunc(("csReadTotal=%RU32, rc=%Rrc\n", cbWrittenTotal, rc));
824	return rc;
825	}
826
827
828	/**
829	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
830	*/
831	static DECLCALLBACK(int) drvAudioVideoRecGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
832	{
833	RT_NOREF(pInterface);
834	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
835
836	pBackendCfg->cbStreamOut = sizeof(AVRECSTREAM);
837	pBackendCfg->cbStreamIn = 0;
838	pBackendCfg->cMaxStreamsIn = 0;
839	pBackendCfg->cMaxStreamsOut = UINT32_MAX;
840
841	return VINF_SUCCESS;
842	}
843
844
845	/**
846	* @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown}
847	*/
848	static DECLCALLBACK(void) drvAudioVideoRecShutdown(PPDMIHOSTAUDIO pInterface)
849	{
850	LogFlowFuncEnter();
851
852	PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
853
854	avRecSinkShutdown(&pThis->Sink);
855	}
856
857
858	/**
859	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
860	*/
861	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvAudioVideoRecGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
862	{
863	RT_NOREF(enmDir);
864	AssertPtrReturn(pInterface, PDMAUDIOBACKENDSTS_UNKNOWN);
865
866	return PDMAUDIOBACKENDSTS_RUNNING;
867	}
868
869
870	/**
871	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
872	*/
873	static DECLCALLBACK(int) drvAudioVideoRecStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
874	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
875	{
876	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
877	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
878	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
879
880	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
881	return VERR_NOT_SUPPORTED;
882
883	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
884
885	PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
886	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
887
888	/* For now we only have one sink, namely the driver's one.
889	* Later each stream could have its own one, to e.g. router different stream to different sinks .*/
890	PAVRECSINK pSink = &pThis->Sink;
891
892	int rc = avRecCreateStreamOut(pThis, pStreamAV, pSink, pCfgReq, pCfgAcq);
893	if (RT_SUCCESS(rc))
894	{
895	pStreamAV->pCfg = DrvAudioHlpStreamCfgDup(pCfgAcq);
896	if (!pStreamAV->pCfg)
897	rc = VERR_NO_MEMORY;
898	}
899
900	return rc;
901	}
902
903
904	/**
905	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
906	*/
907	static DECLCALLBACK(int) drvAudioVideoRecStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
908	{
909	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
910	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
911
912	PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
913	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
914
915	if (!pStreamAV->pCfg) /* Not (yet) configured? Skip. */
916	return VINF_SUCCESS;
917
918	int rc = VINF_SUCCESS;
919
920	if (pStreamAV->pCfg->enmDir == PDMAUDIODIR_OUT)
921	rc = avRecDestroyStreamOut(pThis, pStreamAV);
922
923	if (RT_SUCCESS(rc))
924	{
925	DrvAudioHlpStreamCfgFree(pStreamAV->pCfg);
926	pStreamAV->pCfg = NULL;
927	}
928
929	return rc;
930	}
931
932
933	/**
934	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl}
935	*/
936	static DECLCALLBACK(int) drvAudioVideoRecStreamControl(PPDMIHOSTAUDIO pInterface,
937	PPDMAUDIOBACKENDSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
938	{
939	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
940	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
941
942	PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
943	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
944
945	if (!pStreamAV->pCfg) /* Not (yet) configured? Skip. */
946	return VINF_SUCCESS;
947
948	if (pStreamAV->pCfg->enmDir == PDMAUDIODIR_OUT)
949	return avRecControlStreamOut(pThis, pStreamAV, enmStreamCmd);
950
951	return VINF_SUCCESS;
952	}
953
954
955	/**
956	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
957	*/
958	static DECLCALLBACK(uint32_t) drvAudioVideoRecStreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
959	{
960	RT_NOREF(pInterface, pStream);
961
962	return 0; /* Video capturing does not provide any input. */
963	}
964
965
966	/**
967	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
968	*/
969	static DECLCALLBACK(uint32_t) drvAudioVideoRecStreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
970	{
971	RT_NOREF(pInterface, pStream);
972
973	return UINT32_MAX;
974	}
975
976
977	/**
978	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus}
979	*/
980	static DECLCALLBACK(PDMAUDIOSTREAMSTS) drvAudioVideoRecStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
981	{
982	RT_NOREF(pInterface, pStream);
983
984	return (PDMAUDIOSTREAMSTS_FLAG_INITIALIZED \| PDMAUDIOSTREAMSTS_FLAG_ENABLED);
985	}
986
987
988	/**
989	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate}
990	*/
991	static DECLCALLBACK(int) drvAudioVideoRecStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
992	{
993	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
994	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
995
996	LogFlowFuncEnter();
997
998	/* Nothing to do here for video recording. */
999	return VINF_SUCCESS;
1000	}
1001
1002
1003	/**
1004	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
1005	*/
1006	static DECLCALLBACK(void ) drvAudioVideoRecQueryInterface(PPDMIBASE pInterface, const char pszIID)
1007	{
1008	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
1009	PDRVAUDIOVIDEOREC pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVIDEOREC);
1010
1011	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
1012	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
1013	return NULL;
1014	}
1015
1016
1017	AudioVideoRec::AudioVideoRec(Console *pConsole)
1018	: AudioDriver(pConsole)
1019	, mpDrv(NULL)
1020	{
1021	}
1022
1023
1024	AudioVideoRec::~AudioVideoRec(void)
1025	{
1026	if (mpDrv)
1027	{
1028	mpDrv->pAudioVideoRec = NULL;
1029	mpDrv = NULL;
1030	}
1031	}
1032
1033
1034	/**
1035	* @copydoc AudioDriver::configureDriver
1036	*/
1037	int AudioVideoRec::configureDriver(PCFGMNODE pLunCfg)
1038	{
1039	CFGMR3InsertInteger(pLunCfg, "Object", (uintptr_t)mpConsole->i_getAudioVideoRec());
1040	CFGMR3InsertInteger(pLunCfg, "ObjectConsole", (uintptr_t)mpConsole);
1041
1042	return VINF_SUCCESS;
1043	}
1044
1045
1046	/**
1047	* Construct a audio video recording driver instance.
1048	*
1049	* @copydoc FNPDMDRVCONSTRUCT
1050	*/
1051	/* static */
1052	DECLCALLBACK(int) AudioVideoRec::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
1053	{
1054	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
1055	PDRVAUDIOVIDEOREC pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVIDEOREC);
1056	RT_NOREF(fFlags);
1057
1058	LogRel(("Audio: Initializing video recording audio driver\n"));
1059	LogFlowFunc(("fFlags=0x%x\n", fFlags));
1060
1061	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
1062	("Configuration error: Not possible to attach anything to this driver!\n"),
1063	VERR_PDM_DRVINS_NO_ATTACH);
1064
1065	/*
1066	* Init the static parts.
1067	*/
1068	pThis->pDrvIns = pDrvIns;
1069	/* IBase */
1070	pDrvIns->IBase.pfnQueryInterface = drvAudioVideoRecQueryInterface;
1071	/* IHostAudio */
1072	PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvAudioVideoRec);
1073
1074	/*
1075	* Get the Console object pointer.
1076	*/
1077	void *pvUser;
1078	int rc = CFGMR3QueryPtr(pCfg, "ObjectConsole", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
1079	AssertRCReturn(rc, rc);
1080
1081	/* CFGM tree saves the pointer to Console in the Object node of AudioVideoRec. */
1082	pThis->pConsole = (Console *)pvUser;
1083	AssertReturn(!pThis->pConsole.isNull(), VERR_INVALID_POINTER);
1084
1085	/*
1086	* Get the pointer to the audio driver instance.
1087	*/
1088	rc = CFGMR3QueryPtr(pCfg, "Object", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
1089	AssertRCReturn(rc, rc);
1090
1091	pThis->pAudioVideoRec = (AudioVideoRec *)pvUser;
1092	AssertPtrReturn(pThis->pAudioVideoRec, VERR_INVALID_POINTER);
1093
1094	pThis->pAudioVideoRec->mpDrv = pThis;
1095
1096	/*
1097	* Get the interface for the above driver (DrvAudio) to make mixer/conversion calls.
1098	* Described in CFGM tree.
1099	*/
1100	pThis->pDrvAudio = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIAUDIOCONNECTOR);
1101	AssertMsgReturn(pThis->pDrvAudio, ("Configuration error: No upper interface specified!\n"), VERR_PDM_MISSING_INTERFACE_ABOVE);
1102
1103	#ifdef VBOX_AUDIO_DEBUG_DUMP_PCM_DATA
1104	RTFileDelete(VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH "DrvAudioVideoRec.webm");
1105	RTFileDelete(VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH "DrvAudioVideoRec.pcm");
1106	#endif
1107
1108	return VINF_SUCCESS;
1109	}
1110
1111
1112	/**
1113	* @interface_method_impl{PDMDRVREG,pfnDestruct}
1114	*/
1115	/* static */
1116	DECLCALLBACK(void) AudioVideoRec::drvDestruct(PPDMDRVINS pDrvIns)
1117	{
1118	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
1119	PDRVAUDIOVIDEOREC pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVIDEOREC);
1120	LogFlowFuncEnter();
1121
1122	/*
1123	* If the AudioVideoRec object is still alive, we must clear it's reference to
1124	* us since we'll be invalid when we return from this method.
1125	*/
1126	if (pThis->pAudioVideoRec)
1127	{
1128	pThis->pAudioVideoRec->mpDrv = NULL;
1129	pThis->pAudioVideoRec = NULL;
1130	}
1131	}
1132
1133
1134	/**
1135	* @interface_method_impl{PDMDRVREG,pfnAttach}
1136	*/
1137	/* static */
1138	DECLCALLBACK(int) AudioVideoRec::drvAttach(PPDMDRVINS pDrvIns, uint32_t fFlags)
1139	{
1140	RT_NOREF(pDrvIns, fFlags);
1141
1142	LogFlowFuncEnter();
1143
1144	return VINF_SUCCESS;
1145	}
1146
1147	/**
1148	* @interface_method_impl{PDMDRVREG,pfnDetach}
1149	*/
1150	/* static */
1151	DECLCALLBACK(void) AudioVideoRec::drvDetach(PPDMDRVINS pDrvIns, uint32_t fFlags)
1152	{
1153	RT_NOREF(pDrvIns, fFlags);
1154
1155	LogFlowFuncEnter();
1156	}
1157
1158	/**
1159	* Video recording audio driver registration record.
1160	*/
1161	const PDMDRVREG AudioVideoRec::DrvReg =
1162	{
1163	PDM_DRVREG_VERSION,
1164	/* szName */
1165	"AudioVideoRec",
1166	/* szRCMod */
1167	"",
1168	/* szR0Mod */
1169	"",
1170	/* pszDescription */
1171	"Audio driver for video recording",
1172	/* fFlags */
1173	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1174	/* fClass. */
1175	PDM_DRVREG_CLASS_AUDIO,
1176	/* cMaxInstances */
1177	~0U,
1178	/* cbInstance */
1179	sizeof(DRVAUDIOVIDEOREC),
1180	/* pfnConstruct */
1181	AudioVideoRec::drvConstruct,
1182	/* pfnDestruct */
1183	AudioVideoRec::drvDestruct,
1184	/* pfnRelocate */
1185	NULL,
1186	/* pfnIOCtl */
1187	NULL,
1188	/* pfnPowerOn */
1189	NULL,
1190	/* pfnReset */
1191	NULL,
1192	/* pfnSuspend */
1193	NULL,
1194	/* pfnResume */
1195	NULL,
1196	/* pfnAttach */
1197	AudioVideoRec::drvAttach,
1198	/* pfnDetach */
1199	AudioVideoRec::drvDetach,
1200	/* pfnPowerOff */
1201	NULL,
1202	/* pfnSoftReset */
1203	NULL,
1204	/* u32EndVersion */
1205	PDM_DRVREG_VERSION
1206	};
1207

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source: vbox/trunk/src/VBox/Main/src-client/DrvAudioVideoRec.cpp@ 71848

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