DrvAudioRec.cpp@ 80862

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1	/* $Id: DrvAudioRec.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* Video recording audio backend for Main.
4	*/
5
6	/*
7	* Copyright (C) 2016-2019 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 "DrvAudioRec.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	#define AVREC_OPUS_FRAME_MS_DEFAULT 20 /** Default Opus frame size (in ms). */
113
114
115	/*********************************************************************************************************************************
116	* Structures and Typedefs *
117	*********************************************************************************************************************************/
118
119	/**
120	* Enumeration for specifying the recording container type.
121	*/
122	typedef enum AVRECCONTAINERTYPE
123	{
124	/** Unknown / invalid container type. */
125	AVRECCONTAINERTYPE_UNKNOWN = 0,
126	/** Recorded data goes to Main / Console. */
127	AVRECCONTAINERTYPE_MAIN_CONSOLE = 1,
128	/** Recorded data will be written to a .webm file. */
129	AVRECCONTAINERTYPE_WEBM = 2
130	} AVRECCONTAINERTYPE;
131
132	/**
133	* Structure for keeping generic container parameters.
134	*/
135	typedef struct AVRECCONTAINERPARMS
136	{
137	/** The container's type. */
138	AVRECCONTAINERTYPE enmType;
139	union
140	{
141	/** WebM file specifics. */
142	struct
143	{
144	/** Allocated file name to write .webm file to. Must be free'd. */
145	char *pszFile;
146	} WebM;
147	};
148
149	} AVRECCONTAINERPARMS, *PAVRECCONTAINERPARMS;
150
151	/**
152	* Structure for keeping container-specific data.
153	*/
154	typedef struct AVRECCONTAINER
155	{
156	/** Generic container parameters. */
157	AVRECCONTAINERPARMS Parms;
158
159	union
160	{
161	struct
162	{
163	/** Pointer to Console. */
164	Console *pConsole;
165	} Main;
166
167	struct
168	{
169	/** Pointer to WebM container to write recorded audio data to.
170	* See the AVRECMODE enumeration for more information. */
171	WebMWriter *pWebM;
172	/** Assigned track number from WebM container. */
173	uint8_t uTrack;
174	} WebM;
175	};
176	} AVRECCONTAINER, *PAVRECCONTAINER;
177
178	/**
179	* Structure for keeping generic codec parameters.
180	*/
181	typedef struct AVRECCODECPARMS
182	{
183	/** The codec's used PCM properties. */
184	PDMAUDIOPCMPROPS PCMProps;
185	/** The codec's bitrate. 0 if not used / cannot be specified. */
186	uint32_t uBitrate;
187
188	} AVRECCODECPARMS, *PAVRECCODECPARMS;
189
190	/**
191	* Structure for keeping codec-specific data.
192	*/
193	typedef struct AVRECCODEC
194	{
195	/** Generic codec parameters. */
196	AVRECCODECPARMS Parms;
197	union
198	{
199	#ifdef VBOX_WITH_LIBOPUS
200	struct
201	{
202	/** Encoder we're going to use. */
203	OpusEncoder *pEnc;
204	/** Time (in ms) an (encoded) frame takes.
205	*
206	* For Opus, valid frame sizes are:
207	* ms Frame size
208	* 2.5 120
209	* 5 240
210	* 10 480
211	* 20 (Default) 960
212	* 40 1920
213	* 60 2880
214	*/
215	uint32_t msFrame;
216	/** The frame size in bytes (based on msFrame). */
217	uint32_t cbFrame;
218	/** The frame size in samples per frame (based on msFrame). */
219	uint32_t csFrame;
220	} Opus;
221	#endif /* VBOX_WITH_LIBOPUS */
222	};
223
224	#ifdef VBOX_WITH_STATISTICS /** @todo Make these real STAM values. */
225	struct
226	{
227	/** Number of frames encoded. */
228	uint64_t cEncFrames;
229	/** Total time (in ms) of already encoded audio data. */
230	uint64_t msEncTotal;
231	} STAM;
232	#endif /* VBOX_WITH_STATISTICS */
233
234	} AVRECCODEC, *PAVRECCODEC;
235
236	typedef struct AVRECSINK
237	{
238	/** @todo Add types for container / codec as soon as we implement more stuff. */
239
240	/** Container data to use for data processing. */
241	AVRECCONTAINER Con;
242	/** Codec data this sink uses for encoding. */
243	AVRECCODEC Codec;
244	/** Timestamp (in ms) of when the sink was created. */
245	uint64_t tsStartMs;
246	} AVRECSINK, *PAVRECSINK;
247
248	/**
249	* Audio video recording (output) stream.
250	*/
251	typedef struct AVRECSTREAM
252	{
253	/** The stream's acquired configuration. */
254	PPDMAUDIOSTREAMCFG pCfg;
255	/** (Audio) frame buffer. */
256	PRTCIRCBUF pCircBuf;
257	/** Pointer to sink to use for writing. */
258	PAVRECSINK pSink;
259	/** Last encoded PTS (in ms). */
260	uint64_t uLastPTSMs;
261	/** Temporary buffer for the input (source) data to encode. */
262	void *pvSrcBuf;
263	/** Size (in bytes) of the temporary buffer holding the input (source) data to encode. */
264	size_t cbSrcBuf;
265	/** Temporary buffer for the encoded output (destination) data. */
266	void *pvDstBuf;
267	/** Size (in bytes) of the temporary buffer holding the encoded output (destination) data. */
268	size_t cbDstBuf;
269	} AVRECSTREAM, *PAVRECSTREAM;
270
271	/**
272	* Video recording audio driver instance data.
273	*/
274	typedef struct DRVAUDIORECORDING
275	{
276	/** Pointer to audio video recording object. */
277	AudioVideoRec *pAudioVideoRec;
278	/** Pointer to the driver instance structure. */
279	PPDMDRVINS pDrvIns;
280	/** Pointer to host audio interface. */
281	PDMIHOSTAUDIO IHostAudio;
282	/** Pointer to the console object. */
283	ComPtr<Console> pConsole;
284	/** Pointer to the DrvAudio port interface that is above us. */
285	PPDMIAUDIOCONNECTOR pDrvAudio;
286	/** The driver's configured container parameters. */
287	AVRECCONTAINERPARMS ContainerParms;
288	/** The driver's configured codec parameters. */
289	AVRECCODECPARMS CodecParms;
290	/** The driver's sink for writing output to. */
291	AVRECSINK Sink;
292	} DRVAUDIORECORDING, *PDRVAUDIORECORDING;
293
294	/** Makes DRVAUDIORECORDING out of PDMIHOSTAUDIO. */
295	#define PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface) /* (clang doesn't think it is a POD, thus _DYN.) */ \
296	( (PDRVAUDIORECORDING)((uintptr_t)pInterface - RT_UOFFSETOF_DYN(DRVAUDIORECORDING, IHostAudio)) )
297
298	/**
299	* Initializes a recording sink.
300	*
301	* @returns IPRT status code.
302	* @param pThis Driver instance.
303	* @param pSink Sink to initialize.
304	* @param pConParms Container parameters to set.
305	* @param pCodecParms Codec parameters to set.
306	*/
307	static int avRecSinkInit(PDRVAUDIORECORDING pThis, PAVRECSINK pSink, PAVRECCONTAINERPARMS pConParms, PAVRECCODECPARMS pCodecParms)
308	{
309	uint32_t uHz = pCodecParms->PCMProps.uHz;
310	uint8_t cBytes = pCodecParms->PCMProps.cBytes;
311	uint8_t cChannels = pCodecParms->PCMProps.cChannels;
312	uint32_t uBitrate = pCodecParms->uBitrate;
313
314	/* Opus only supports certain input sample rates in an efficient manner.
315	* So make sure that we use those by resampling the data to the requested rate. */
316	if (uHz > 24000) uHz = AVREC_OPUS_HZ_MAX;
317	else if (uHz > 16000) uHz = 24000;
318	else if (uHz > 12000) uHz = 16000;
319	else if (uHz > 8000 ) uHz = 12000;
320	else uHz = 8000;
321
322	if (cChannels > 2)
323	{
324	LogRel(("Recording: Warning: More than 2 (stereo) channels are not supported at the moment\n"));
325	cChannels = 2;
326	}
327
328	int orc;
329	OpusEncoder *pEnc = opus_encoder_create(uHz, cChannels, OPUS_APPLICATION_AUDIO, &orc);
330	if (orc != OPUS_OK)
331	{
332	LogRel(("Recording: Audio codec failed to initialize: %s\n", opus_strerror(orc)));
333	return VERR_AUDIO_BACKEND_INIT_FAILED;
334	}
335
336	AssertPtr(pEnc);
337
338	if (uBitrate) /* Only explicitly set the bitrate if we specified one. Otherwise let Opus decide. */
339	{
340	opus_encoder_ctl(pEnc, OPUS_SET_BITRATE(uBitrate));
341	if (orc != OPUS_OK)
342	{
343	opus_encoder_destroy(pEnc);
344	pEnc = NULL;
345
346	LogRel(("Recording: Audio codec failed to set bitrate (%RU32): %s\n", uBitrate, opus_strerror(orc)));
347	return VERR_AUDIO_BACKEND_INIT_FAILED;
348	}
349	}
350
351	const bool fUseVBR = true; /** Use Variable Bit Rate (VBR) by default. @todo Make this configurable? */
352
353	orc = opus_encoder_ctl(pEnc, OPUS_SET_VBR(fUseVBR ? 1 : 0));
354	if (orc != OPUS_OK)
355	{
356	opus_encoder_destroy(pEnc);
357	pEnc = NULL;
358
359	LogRel(("Recording: Audio codec failed to %s VBR mode: %s\n", fUseVBR ? "enable" : "disable", opus_strerror(orc)));
360	return VERR_AUDIO_BACKEND_INIT_FAILED;
361	}
362
363	int rc = VINF_SUCCESS;
364
365	try
366	{
367	switch (pConParms->enmType)
368	{
369	case AVRECCONTAINERTYPE_MAIN_CONSOLE:
370	{
371	if (pThis->pConsole)
372	{
373	pSink->Con.Main.pConsole = pThis->pConsole;
374	}
375	else
376	rc = VERR_NOT_SUPPORTED;
377	break;
378	}
379
380	case AVRECCONTAINERTYPE_WEBM:
381	{
382	/* If we only record audio, create our own WebM writer instance here. */
383	if (!pSink->Con.WebM.pWebM) /* Do we already have our WebM writer instance? */
384	{
385	/** @todo Add sink name / number to file name. */
386	const char *pszFile = pSink->Con.Parms.WebM.pszFile;
387	AssertPtr(pszFile);
388
389	pSink->Con.WebM.pWebM = new WebMWriter();
390	rc = pSink->Con.WebM.pWebM->Open(pszFile,
391	/** @todo Add option to add some suffix if file exists instead of overwriting? */
392	RTFILE_O_CREATE_REPLACE \| RTFILE_O_WRITE \| RTFILE_O_DENY_NONE,
393	WebMWriter::AudioCodec_Opus, WebMWriter::VideoCodec_None);
394	if (RT_SUCCESS(rc))
395	{
396	rc = pSink->Con.WebM.pWebM->AddAudioTrack(uHz, cChannels, cBytes * 8 /* Bits */,
397	&pSink->Con.WebM.uTrack);
398	if (RT_SUCCESS(rc))
399	{
400	LogRel(("Recording: Recording audio to audio file '%s'\n", pszFile));
401	}
402	else
403	LogRel(("Recording: Error creating audio track for audio file '%s' (%Rrc)\n", pszFile, rc));
404	}
405	else
406	LogRel(("Recording: Error creating audio file '%s' (%Rrc)\n", pszFile, rc));
407	}
408	break;
409	}
410
411	default:
412	rc = VERR_NOT_SUPPORTED;
413	break;
414	}
415	}
416	catch (std::bad_alloc &)
417	{
418	rc = VERR_NO_MEMORY;
419	}
420
421	if (RT_SUCCESS(rc))
422	{
423	pSink->Con.Parms.enmType = pConParms->enmType;
424
425	PAVRECCODEC pCodec = &pSink->Codec;
426
427	pCodec->Parms.PCMProps.uHz = uHz;
428	pCodec->Parms.PCMProps.cChannels = cChannels;
429	pCodec->Parms.PCMProps.cBytes = cBytes;
430	pCodec->Parms.PCMProps.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pSink->Codec.Parms.PCMProps.cBytes,
431	pSink->Codec.Parms.PCMProps.cChannels);
432	pCodec->Parms.uBitrate = uBitrate;
433
434	pCodec->Opus.pEnc = pEnc;
435	pCodec->Opus.msFrame = AVREC_OPUS_FRAME_MS_DEFAULT;
436
437	if (!pCodec->Opus.msFrame)
438	pCodec->Opus.msFrame = AVREC_OPUS_FRAME_MS_DEFAULT; /* 20ms by default; to prevent division by zero. */
439	pCodec->Opus.csFrame = pSink->Codec.Parms.PCMProps.uHz / (1000 /* s in ms */ / pSink->Codec.Opus.msFrame);
440	pCodec->Opus.cbFrame = DrvAudioHlpFramesToBytes(pCodec->Opus.csFrame, &pSink->Codec.Parms.PCMProps);
441
442	#ifdef VBOX_WITH_STATISTICS
443	pSink->Codec.STAM.cEncFrames = 0;
444	pSink->Codec.STAM.msEncTotal = 0;
445	#endif
446	pSink->tsStartMs = RTTimeMilliTS();
447	}
448	else
449	{
450	if (pEnc)
451	{
452	opus_encoder_destroy(pEnc);
453	pEnc = NULL;
454	}
455
456	LogRel(("Recording: Error creating sink (%Rrc)\n", rc));
457	}
458
459	return rc;
460	}
461
462
463	/**
464	* Shuts down (closes) a recording sink,
465	*
466	* @returns IPRT status code.
467	* @param pSink Recording sink to shut down.
468	*/
469	static void avRecSinkShutdown(PAVRECSINK pSink)
470	{
471	AssertPtrReturnVoid(pSink);
472
473	#ifdef VBOX_WITH_LIBOPUS
474	if (pSink->Codec.Opus.pEnc)
475	{
476	opus_encoder_destroy(pSink->Codec.Opus.pEnc);
477	pSink->Codec.Opus.pEnc = NULL;
478	}
479	#endif
480	switch (pSink->Con.Parms.enmType)
481	{
482	case AVRECCONTAINERTYPE_WEBM:
483	{
484	if (pSink->Con.WebM.pWebM)
485	{
486	LogRel2(("Recording: Finished recording audio to file '%s' (%zu bytes)\n",
487	pSink->Con.WebM.pWebM->GetFileName().c_str(), pSink->Con.WebM.pWebM->GetFileSize()));
488
489	int rc2 = pSink->Con.WebM.pWebM->Close();
490	AssertRC(rc2);
491
492	delete pSink->Con.WebM.pWebM;
493	pSink->Con.WebM.pWebM = NULL;
494	}
495	break;
496	}
497
498	case AVRECCONTAINERTYPE_MAIN_CONSOLE:
499	default:
500	break;
501	}
502	}
503
504
505	/**
506	* Creates an audio output stream and associates it with the specified recording sink.
507	*
508	* @returns IPRT status code.
509	* @param pThis Driver instance.
510	* @param pStreamAV Audio output stream to create.
511	* @param pSink Recording sink to associate audio output stream to.
512	* @param pCfgReq Requested configuration by the audio backend.
513	* @param pCfgAcq Acquired configuration by the audio output stream.
514	*/
515	static int avRecCreateStreamOut(PDRVAUDIORECORDING pThis, PAVRECSTREAM pStreamAV,
516	PAVRECSINK pSink, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
517	{
518	AssertPtrReturn(pThis, VERR_INVALID_POINTER);
519	AssertPtrReturn(pStreamAV, VERR_INVALID_POINTER);
520	AssertPtrReturn(pSink, VERR_INVALID_POINTER);
521	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
522	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
523
524	if (pCfgReq->DestSource.Dest != PDMAUDIOPLAYBACKDEST_FRONT)
525	{
526	AssertFailed();
527
528	LogRel2(("Recording: Support for surround audio not implemented yet\n"));
529	return VERR_NOT_SUPPORTED;
530	}
531
532	int rc = VINF_SUCCESS;
533
534	#ifdef VBOX_WITH_LIBOPUS
535	rc = RTCircBufCreate(&pStreamAV->pCircBuf, pSink->Codec.Opus.cbFrame * 2 /* Use "double buffering" */);
536	if (RT_SUCCESS(rc))
537	{
538	size_t cbScratchBuf = pSink->Codec.Opus.cbFrame;
539	pStreamAV->pvSrcBuf = RTMemAlloc(cbScratchBuf);
540	if (pStreamAV->pvSrcBuf)
541	{
542	pStreamAV->cbSrcBuf = cbScratchBuf;
543	pStreamAV->pvDstBuf = RTMemAlloc(cbScratchBuf);
544	if (pStreamAV->pvDstBuf)
545	{
546	pStreamAV->cbDstBuf = cbScratchBuf;
547
548	pStreamAV->pSink = pSink; /* Assign sink to stream. */
549	pStreamAV->uLastPTSMs = 0;
550
551	if (pCfgAcq)
552	{
553	/* Make sure to let the driver backend know that we need the audio data in
554	* a specific sampling rate Opus is optimized for. */
555	pCfgAcq->Props.uHz = pSink->Codec.Parms.PCMProps.uHz;
556	pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBytes, pCfgAcq->Props.cChannels);
557
558	/* Every Opus frame marks a period for now. Optimize this later. */
559	pCfgAcq->Backend.cfPeriod = DrvAudioHlpMilliToFrames(pSink->Codec.Opus.msFrame, &pCfgAcq->Props);
560	pCfgAcq->Backend.cfBufferSize = DrvAudioHlpMilliToFrames(100 /* ms /, &pCfgAcq->Props); /* @todo Make this configurable. */
561	pCfgAcq->Backend.cfPreBuf = pCfgAcq->Backend.cfPeriod * 2;
562	}
563	}
564	else
565	rc = VERR_NO_MEMORY;
566	}
567	else
568	rc = VERR_NO_MEMORY;
569	}
570	#else
571	RT_NOREF(pThis, pSink, pStreamAV, pCfgReq, pCfgAcq);
572	rc = VERR_NOT_SUPPORTED;
573	#endif /* VBOX_WITH_LIBOPUS */
574
575	LogFlowFuncLeaveRC(rc);
576	return rc;
577	}
578
579
580	/**
581	* Destroys (closes) an audio output stream.
582	*
583	* @returns IPRT status code.
584	* @param pThis Driver instance.
585	* @param pStreamAV Audio output stream to destroy.
586	*/
587	static int avRecDestroyStreamOut(PDRVAUDIORECORDING pThis, PAVRECSTREAM pStreamAV)
588	{
589	RT_NOREF(pThis);
590
591	if (pStreamAV->pCircBuf)
592	{
593	RTCircBufDestroy(pStreamAV->pCircBuf);
594	pStreamAV->pCircBuf = NULL;
595	}
596
597	if (pStreamAV->pvSrcBuf)
598	{
599	Assert(pStreamAV->cbSrcBuf);
600	RTMemFree(pStreamAV->pvSrcBuf);
601	pStreamAV->cbSrcBuf = 0;
602	}
603
604	if (pStreamAV->pvDstBuf)
605	{
606	Assert(pStreamAV->cbDstBuf);
607	RTMemFree(pStreamAV->pvDstBuf);
608	pStreamAV->cbDstBuf = 0;
609	}
610
611	return VINF_SUCCESS;
612	}
613
614
615	/**
616	* Controls an audio output stream
617	*
618	* @returns IPRT status code.
619	* @param pThis Driver instance.
620	* @param pStreamAV Audio output stream to control.
621	* @param enmStreamCmd Stream command to issue.
622	*/
623	static int avRecControlStreamOut(PDRVAUDIORECORDING pThis,
624	PAVRECSTREAM pStreamAV, PDMAUDIOSTREAMCMD enmStreamCmd)
625	{
626	RT_NOREF(pThis, pStreamAV);
627
628	int rc = VINF_SUCCESS;
629
630	switch (enmStreamCmd)
631	{
632	case PDMAUDIOSTREAMCMD_ENABLE:
633	case PDMAUDIOSTREAMCMD_DISABLE:
634	case PDMAUDIOSTREAMCMD_RESUME:
635	case PDMAUDIOSTREAMCMD_PAUSE:
636	break;
637
638	default:
639	rc = VERR_NOT_SUPPORTED;
640	break;
641	}
642
643	return rc;
644	}
645
646
647	/**
648	* @interface_method_impl{PDMIHOSTAUDIO,pfnInit}
649	*/
650	static DECLCALLBACK(int) drvAudioVideoRecInit(PPDMIHOSTAUDIO pInterface)
651	{
652	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
653
654	LogFlowFuncEnter();
655
656	PDRVAUDIORECORDING pThis = PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface);
657
658	LogRel(("Recording: Audio driver is using %RU32Hz, %RU16bit, %RU8 %s\n",
659	pThis->CodecParms.PCMProps.uHz, pThis->CodecParms.PCMProps.cBytes * 8,
660	pThis->CodecParms.PCMProps.cChannels, pThis->CodecParms.PCMProps.cChannels == 1 ? "channel" : "channels"));
661
662	int rc = avRecSinkInit(pThis, &pThis->Sink, &pThis->ContainerParms, &pThis->CodecParms);
663	if (RT_FAILURE(rc))
664	{
665	LogRel(("Recording: Audio recording driver failed to initialize, rc=%Rrc\n", rc));
666	}
667	else
668	LogRel2(("Recording: Audio recording driver initialized\n"));
669
670	return rc;
671	}
672
673
674	/**
675	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
676	*/
677	static DECLCALLBACK(int) drvAudioVideoRecStreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
678	void pvBuf, uint32_t cxBuf, uint32_t pcxRead)
679	{
680	RT_NOREF(pInterface, pStream, pvBuf, cxBuf);
681
682	if (pcxRead)
683	*pcxRead = 0;
684
685	return VINF_SUCCESS;
686	}
687
688
689	/**
690	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
691	*/
692	static DECLCALLBACK(int) drvAudioVideoRecStreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
693	const void pvBuf, uint32_t cxBuf, uint32_t pcxWritten)
694	{
695	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
696	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
697	AssertPtrReturn(pvBuf, VERR_INVALID_POINTER);
698	AssertReturn(cxBuf, VERR_INVALID_PARAMETER);
699	/* pcxWritten is optional. */
700
701	PDRVAUDIORECORDING pThis = PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface);
702	RT_NOREF(pThis);
703	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
704
705	int rc = VINF_SUCCESS;
706
707	uint32_t cbWrittenTotal = 0;
708
709	/*
710	* Call the encoder with the data.
711	*/
712	#ifdef VBOX_WITH_LIBOPUS
713	PAVRECSINK pSink = pStreamAV->pSink;
714	AssertPtr(pSink);
715	PAVRECCODEC pCodec = &pSink->Codec;
716	AssertPtr(pCodec);
717	PRTCIRCBUF pCircBuf = pStreamAV->pCircBuf;
718	AssertPtr(pCircBuf);
719
720	void *pvCircBuf;
721	size_t cbCircBuf;
722
723	uint32_t cbToWrite = cxBuf;
724
725	/*
726	* Fetch as much as we can into our internal ring buffer.
727	*/
728	while ( cbToWrite
729	&& RTCircBufFree(pCircBuf))
730	{
731	RTCircBufAcquireWriteBlock(pCircBuf, cbToWrite, &pvCircBuf, &cbCircBuf);
732
733	if (cbCircBuf)
734	{
735	memcpy(pvCircBuf, (uint8_t *)pvBuf + cbWrittenTotal, cbCircBuf),
736	cbWrittenTotal += (uint32_t)cbCircBuf;
737	Assert(cbToWrite >= cbCircBuf);
738	cbToWrite -= (uint32_t)cbCircBuf;
739	}
740
741	RTCircBufReleaseWriteBlock(pCircBuf, cbCircBuf);
742
743	if ( RT_FAILURE(rc)
744	\|\| !cbCircBuf)
745	{
746	break;
747	}
748	}
749
750	/*
751	* Process our internal ring buffer and encode the data.
752	*/
753
754	uint32_t cbSrc;
755
756	/* Only encode data if we have data for the given time period (or more). */
757	while (RTCircBufUsed(pCircBuf) >= pCodec->Opus.cbFrame)
758	{
759	LogFunc(("cbAvail=%zu, csFrame=%RU32, cbFrame=%RU32\n",
760	RTCircBufUsed(pCircBuf), pCodec->Opus.csFrame, pCodec->Opus.cbFrame));
761
762	cbSrc = 0;
763
764	while (cbSrc < pCodec->Opus.cbFrame)
765	{
766	RTCircBufAcquireReadBlock(pCircBuf, pCodec->Opus.cbFrame - cbSrc, &pvCircBuf, &cbCircBuf);
767
768	if (cbCircBuf)
769	{
770	memcpy((uint8_t *)pStreamAV->pvSrcBuf + cbSrc, pvCircBuf, cbCircBuf);
771
772	cbSrc += (uint32_t)cbCircBuf;
773	Assert(cbSrc <= pStreamAV->cbSrcBuf);
774	}
775
776	RTCircBufReleaseReadBlock(pCircBuf, cbCircBuf);
777
778	if (!cbCircBuf)
779	break;
780	}
781
782	# ifdef VBOX_AUDIO_DEBUG_DUMP_PCM_DATA
783	RTFILE fh;
784	RTFileOpen(&fh, VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH "DrvAudioVideoRec.pcm",
785	RTFILE_O_OPEN_CREATE \| RTFILE_O_APPEND \| RTFILE_O_WRITE \| RTFILE_O_DENY_NONE);
786	RTFileWrite(fh, pStreamAV->pvSrcBuf, cbSrc, NULL);
787	RTFileClose(fh);
788	# endif
789
790	Assert(cbSrc == pCodec->Opus.cbFrame);
791
792	/*
793	* Opus always encodes PER "OPUS FRAME", that is, exactly 2.5, 5, 10, 20, 40 or 60 ms of audio data.
794	*
795	* A packet can have up to 120ms worth of audio data.
796	* Anything > 120ms of data will result in a "corrupted package" error message by
797	* by decoding application.
798	*/
799
800	/* Call the encoder to encode one "Opus frame" per iteration. */
801	opus_int32 cbWritten = opus_encode(pSink->Codec.Opus.pEnc,
802	(opus_int16 *)pStreamAV->pvSrcBuf, pCodec->Opus.csFrame,
803	(uint8_t *)pStreamAV->pvDstBuf, (opus_int32)pStreamAV->cbDstBuf);
804	if (cbWritten > 0)
805	{
806	/* Get overall frames encoded. */
807	const uint32_t cEncFrames = opus_packet_get_nb_frames((uint8_t *)pStreamAV->pvDstBuf, cbWritten);
808
809	# ifdef VBOX_WITH_STATISTICS
810	pSink->Codec.STAM.cEncFrames += cEncFrames;
811	pSink->Codec.STAM.msEncTotal += pSink->Codec.Opus.msFrame * cEncFrames;
812	# endif
813	Assert((uint32_t)cbWritten <= (uint32_t)pStreamAV->cbDstBuf);
814	const uint32_t cbDst = RT_MIN((uint32_t)cbWritten, (uint32_t)pStreamAV->cbDstBuf);
815
816	Assert(cEncFrames == 1);
817
818	if (pStreamAV->uLastPTSMs == 0)
819	pStreamAV->uLastPTSMs = RTTimeProgramMilliTS(); /* We want the absolute time (in ms) since program start. */
820
821	const uint64_t uDurationMs = pSink->Codec.Opus.msFrame * cEncFrames;
822	const uint64_t uPTSMs = pStreamAV->uLastPTSMs;
823
824	pStreamAV->uLastPTSMs += uDurationMs;
825
826	switch (pSink->Con.Parms.enmType)
827	{
828	case AVRECCONTAINERTYPE_MAIN_CONSOLE:
829	{
830	HRESULT hr = pSink->Con.Main.pConsole->i_recordingSendAudio(pStreamAV->pvDstBuf, cbDst, uPTSMs);
831	Assert(hr == S_OK);
832	RT_NOREF(hr);
833
834	break;
835	}
836
837	case AVRECCONTAINERTYPE_WEBM:
838	{
839	WebMWriter::BlockData_Opus blockData = { pStreamAV->pvDstBuf, cbDst, uPTSMs };
840	rc = pSink->Con.WebM.pWebM->WriteBlock(pSink->Con.WebM.uTrack, &blockData, sizeof(blockData));
841	AssertRC(rc);
842
843	break;
844	}
845
846	default:
847	AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED);
848	break;
849	}
850	}
851	else if (cbWritten < 0)
852	{
853	AssertMsgFailed(("Encoding failed: %s\n", opus_strerror(cbWritten)));
854	rc = VERR_INVALID_PARAMETER;
855	}
856
857	if (RT_FAILURE(rc))
858	break;
859	}
860
861	if (pcxWritten)
862	*pcxWritten = cbWrittenTotal;
863	#else
864	/* Report back all data as being processed. */
865	if (pcxWritten)
866	*pcxWritten = cxBuf;
867
868	rc = VERR_NOT_SUPPORTED;
869	#endif /* VBOX_WITH_LIBOPUS */
870
871	LogFlowFunc(("csReadTotal=%RU32, rc=%Rrc\n", cbWrittenTotal, rc));
872	return rc;
873	}
874
875
876	/**
877	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
878	*/
879	static DECLCALLBACK(int) drvAudioVideoRecGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
880	{
881	RT_NOREF(pInterface);
882	AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
883
884	RTStrPrintf2(pBackendCfg->szName, sizeof(pBackendCfg->szName), "Video recording audio driver");
885
886	pBackendCfg->cbStreamOut = sizeof(AVRECSTREAM);
887	pBackendCfg->cbStreamIn = 0;
888	pBackendCfg->cMaxStreamsIn = 0;
889	pBackendCfg->cMaxStreamsOut = UINT32_MAX;
890
891	return VINF_SUCCESS;
892	}
893
894
895	/**
896	* @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown}
897	*/
898	static DECLCALLBACK(void) drvAudioVideoRecShutdown(PPDMIHOSTAUDIO pInterface)
899	{
900	LogFlowFuncEnter();
901
902	PDRVAUDIORECORDING pThis = PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface);
903
904	avRecSinkShutdown(&pThis->Sink);
905	}
906
907
908	/**
909	* @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
910	*/
911	static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvAudioVideoRecGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
912	{
913	RT_NOREF(enmDir);
914	AssertPtrReturn(pInterface, PDMAUDIOBACKENDSTS_UNKNOWN);
915
916	return PDMAUDIOBACKENDSTS_RUNNING;
917	}
918
919
920	/**
921	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
922	*/
923	static DECLCALLBACK(int) drvAudioVideoRecStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream,
924	PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
925	{
926	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
927	AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
928	AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
929
930	if (pCfgReq->enmDir == PDMAUDIODIR_IN)
931	return VERR_NOT_SUPPORTED;
932
933	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
934
935	PDRVAUDIORECORDING pThis = PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface);
936	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
937
938	/* For now we only have one sink, namely the driver's one.
939	* Later each stream could have its own one, to e.g. router different stream to different sinks .*/
940	PAVRECSINK pSink = &pThis->Sink;
941
942	int rc = avRecCreateStreamOut(pThis, pStreamAV, pSink, pCfgReq, pCfgAcq);
943	if (RT_SUCCESS(rc))
944	{
945	pStreamAV->pCfg = DrvAudioHlpStreamCfgDup(pCfgAcq);
946	if (!pStreamAV->pCfg)
947	rc = VERR_NO_MEMORY;
948	}
949
950	return rc;
951	}
952
953
954	/**
955	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
956	*/
957	static DECLCALLBACK(int) drvAudioVideoRecStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
958	{
959	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
960	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
961
962	PDRVAUDIORECORDING pThis = PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface);
963	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
964
965	if (!pStreamAV->pCfg) /* Not (yet) configured? Skip. */
966	return VINF_SUCCESS;
967
968	int rc = VINF_SUCCESS;
969
970	if (pStreamAV->pCfg->enmDir == PDMAUDIODIR_OUT)
971	rc = avRecDestroyStreamOut(pThis, pStreamAV);
972
973	if (RT_SUCCESS(rc))
974	{
975	DrvAudioHlpStreamCfgFree(pStreamAV->pCfg);
976	pStreamAV->pCfg = NULL;
977	}
978
979	return rc;
980	}
981
982
983	/**
984	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl}
985	*/
986	static DECLCALLBACK(int) drvAudioVideoRecStreamControl(PPDMIHOSTAUDIO pInterface,
987	PPDMAUDIOBACKENDSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
988	{
989	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
990	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
991
992	PDRVAUDIORECORDING pThis = PDMIHOSTAUDIO_2_DRVAUDIORECORDING(pInterface);
993	PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream;
994
995	if (!pStreamAV->pCfg) /* Not (yet) configured? Skip. */
996	return VINF_SUCCESS;
997
998	if (pStreamAV->pCfg->enmDir == PDMAUDIODIR_OUT)
999	return avRecControlStreamOut(pThis, pStreamAV, enmStreamCmd);
1000
1001	return VINF_SUCCESS;
1002	}
1003
1004
1005	/**
1006	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable}
1007	*/
1008	static DECLCALLBACK(uint32_t) drvAudioVideoRecStreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1009	{
1010	RT_NOREF(pInterface, pStream);
1011
1012	return 0; /* Video capturing does not provide any input. */
1013	}
1014
1015
1016	/**
1017	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable}
1018	*/
1019	static DECLCALLBACK(uint32_t) drvAudioVideoRecStreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1020	{
1021	RT_NOREF(pInterface, pStream);
1022
1023	return UINT32_MAX;
1024	}
1025
1026
1027	/**
1028	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus}
1029	*/
1030	static DECLCALLBACK(PDMAUDIOSTREAMSTS) drvAudioVideoRecStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1031	{
1032	RT_NOREF(pInterface, pStream);
1033
1034	return (PDMAUDIOSTREAMSTS_FLAG_INITIALIZED \| PDMAUDIOSTREAMSTS_FLAG_ENABLED);
1035	}
1036
1037
1038	/**
1039	* @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate}
1040	*/
1041	static DECLCALLBACK(int) drvAudioVideoRecStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream)
1042	{
1043	AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
1044	AssertPtrReturn(pStream, VERR_INVALID_POINTER);
1045
1046	LogFlowFuncEnter();
1047
1048	/* Nothing to do here for video recording. */
1049	return VINF_SUCCESS;
1050	}
1051
1052
1053	/**
1054	* @interface_method_impl{PDMIBASE,pfnQueryInterface}
1055	*/
1056	static DECLCALLBACK(void ) drvAudioVideoRecQueryInterface(PPDMIBASE pInterface, const char pszIID)
1057	{
1058	PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
1059	PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING);
1060
1061	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
1062	PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
1063	return NULL;
1064	}
1065
1066
1067	AudioVideoRec::AudioVideoRec(Console *pConsole)
1068	: AudioDriver(pConsole)
1069	, mpDrv(NULL)
1070	{
1071	}
1072
1073
1074	AudioVideoRec::~AudioVideoRec(void)
1075	{
1076	if (mpDrv)
1077	{
1078	mpDrv->pAudioVideoRec = NULL;
1079	mpDrv = NULL;
1080	}
1081	}
1082
1083
1084	/**
1085	* Applies a video recording configuration to this driver instance.
1086	*
1087	* @returns IPRT status code.
1088	* @param Settings Capturing configuration to apply.
1089	*/
1090	int AudioVideoRec::applyConfiguration(const settings::RecordingSettings &Settings)
1091	{
1092	/** @todo Do some validation here. */
1093	mVideoRecCfg = Settings; /* Note: Does have an own copy operator. */
1094	return VINF_SUCCESS;
1095	}
1096
1097
1098	/**
1099	* @copydoc AudioDriver::configureDriver
1100	*/
1101	int AudioVideoRec::configureDriver(PCFGMNODE pLunCfg)
1102	{
1103	int rc = CFGMR3InsertInteger(pLunCfg, "Object", (uintptr_t)mpConsole->i_recordingGetAudioDrv());
1104	AssertRCReturn(rc, rc);
1105	rc = CFGMR3InsertInteger(pLunCfg, "ObjectConsole", (uintptr_t)mpConsole);
1106	AssertRCReturn(rc, rc);
1107
1108	/** @todo For now we're using the configuration of the first screen here audio-wise. */
1109	Assert(mVideoRecCfg.mapScreens.size() >= 1);
1110	const settings::RecordingScreenSettings &Screen0Settings = mVideoRecCfg.mapScreens[0];
1111
1112	rc = CFGMR3InsertInteger(pLunCfg, "ContainerType", (uint64_t)Screen0Settings.enmDest);
1113	AssertRCReturn(rc, rc);
1114	if (Screen0Settings.enmDest == RecordingDestination_File)
1115	{
1116	rc = CFGMR3InsertString(pLunCfg, "ContainerFileName", Utf8Str(Screen0Settings.File.strName).c_str());
1117	AssertRCReturn(rc, rc);
1118	}
1119	rc = CFGMR3InsertInteger(pLunCfg, "CodecHz", Screen0Settings.Audio.uHz);
1120	AssertRCReturn(rc, rc);
1121	rc = CFGMR3InsertInteger(pLunCfg, "CodecBits", Screen0Settings.Audio.cBits);
1122	AssertRCReturn(rc, rc);
1123	rc = CFGMR3InsertInteger(pLunCfg, "CodecChannels", Screen0Settings.Audio.cChannels);
1124	AssertRCReturn(rc, rc);
1125	rc = CFGMR3InsertInteger(pLunCfg, "CodecBitrate", 0); /* Let Opus decide for now. */
1126	AssertRCReturn(rc, rc);
1127
1128	return AudioDriver::configureDriver(pLunCfg);
1129	}
1130
1131
1132	/**
1133	* Construct a audio video recording driver instance.
1134	*
1135	* @copydoc FNPDMDRVCONSTRUCT
1136	*/
1137	/* static */
1138	DECLCALLBACK(int) AudioVideoRec::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
1139	{
1140	PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
1141	PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING);
1142	RT_NOREF(fFlags);
1143
1144	LogRel(("Audio: Initializing video recording audio driver\n"));
1145	LogFlowFunc(("fFlags=0x%x\n", fFlags));
1146
1147	AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
1148	("Configuration error: Not possible to attach anything to this driver!\n"),
1149	VERR_PDM_DRVINS_NO_ATTACH);
1150
1151	/*
1152	* Init the static parts.
1153	*/
1154	pThis->pDrvIns = pDrvIns;
1155	/* IBase */
1156	pDrvIns->IBase.pfnQueryInterface = drvAudioVideoRecQueryInterface;
1157	/* IHostAudio */
1158	PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvAudioVideoRec);
1159
1160	/*
1161	* Get the Console object pointer.
1162	*/
1163	void *pvUser;
1164	int rc = CFGMR3QueryPtr(pCfg, "ObjectConsole", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
1165	AssertRCReturn(rc, rc);
1166
1167	/* CFGM tree saves the pointer to Console in the Object node of AudioVideoRec. */
1168	pThis->pConsole = (Console *)pvUser;
1169	AssertReturn(!pThis->pConsole.isNull(), VERR_INVALID_POINTER);
1170
1171	/*
1172	* Get the pointer to the audio driver instance.
1173	*/
1174	rc = CFGMR3QueryPtr(pCfg, "Object", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
1175	AssertRCReturn(rc, rc);
1176
1177	pThis->pAudioVideoRec = (AudioVideoRec *)pvUser;
1178	AssertPtrReturn(pThis->pAudioVideoRec, VERR_INVALID_POINTER);
1179
1180	/*
1181	* Get the recording container and codec parameters from the audio driver instance.
1182	*/
1183	PAVRECCONTAINERPARMS pConParams = &pThis->ContainerParms;
1184	PAVRECCODECPARMS pCodecParms = &pThis->CodecParms;
1185	PPDMAUDIOPCMPROPS pPCMProps = &pCodecParms->PCMProps;
1186
1187	RT_ZERO(pThis->ContainerParms);
1188	RT_ZERO(pThis->CodecParms);
1189
1190	rc = CFGMR3QueryU32(pCfg, "ContainerType", (uint32_t *)&pConParams->enmType);
1191	AssertRCReturn(rc, rc);
1192
1193	switch (pConParams->enmType)
1194	{
1195	case AVRECCONTAINERTYPE_WEBM:
1196	rc = CFGMR3QueryStringAlloc(pCfg, "ContainerFileName", &pConParams->WebM.pszFile);
1197	AssertRCReturn(rc, rc);
1198	break;
1199
1200	default:
1201	break;
1202	}
1203
1204	rc = CFGMR3QueryU32(pCfg, "CodecHz", &pPCMProps->uHz);
1205	AssertRCReturn(rc, rc);
1206	rc = CFGMR3QueryU8(pCfg, "CodecBits", &pPCMProps->cBytes);
1207	AssertRCReturn(rc, rc);
1208	rc = CFGMR3QueryU8(pCfg, "CodecChannels", &pPCMProps->cChannels);
1209	AssertRCReturn(rc, rc);
1210	rc = CFGMR3QueryU32(pCfg, "CodecBitrate", &pCodecParms->uBitrate);
1211	AssertRCReturn(rc, rc);
1212
1213	pPCMProps->cBytes = pPCMProps->cBytes / 8; /* Bits to bytes. */
1214	pPCMProps->cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pPCMProps->cBytes, pPCMProps->cChannels);
1215	pPCMProps->fSigned = true;
1216	pPCMProps->fSwapEndian = false;
1217
1218	AssertMsgReturn(DrvAudioHlpPCMPropsAreValid(pPCMProps),
1219	("Configuration error: Audio configuration is invalid!\n"), VERR_PDM_DRVINS_UNKNOWN_CFG_VALUES);
1220
1221	pThis->pAudioVideoRec = (AudioVideoRec *)pvUser;
1222	AssertPtrReturn(pThis->pAudioVideoRec, VERR_INVALID_POINTER);
1223
1224	pThis->pAudioVideoRec->mpDrv = pThis;
1225
1226	/*
1227	* Get the interface for the above driver (DrvAudio) to make mixer/conversion calls.
1228	* Described in CFGM tree.
1229	*/
1230	pThis->pDrvAudio = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIAUDIOCONNECTOR);
1231	AssertMsgReturn(pThis->pDrvAudio, ("Configuration error: No upper interface specified!\n"), VERR_PDM_MISSING_INTERFACE_ABOVE);
1232
1233	#ifdef VBOX_AUDIO_DEBUG_DUMP_PCM_DATA
1234	RTFileDelete(VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH "DrvAudioVideoRec.webm");
1235	RTFileDelete(VBOX_AUDIO_DEBUG_DUMP_PCM_DATA_PATH "DrvAudioVideoRec.pcm");
1236	#endif
1237
1238	return VINF_SUCCESS;
1239	}
1240
1241
1242	/**
1243	* @interface_method_impl{PDMDRVREG,pfnDestruct}
1244	*/
1245	/* static */
1246	DECLCALLBACK(void) AudioVideoRec::drvDestruct(PPDMDRVINS pDrvIns)
1247	{
1248	PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
1249	PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING);
1250
1251	LogFlowFuncEnter();
1252
1253	switch (pThis->ContainerParms.enmType)
1254	{
1255	case AVRECCONTAINERTYPE_WEBM:
1256	{
1257	avRecSinkShutdown(&pThis->Sink);
1258	RTStrFree(pThis->ContainerParms.WebM.pszFile);
1259	break;
1260	}
1261
1262	default:
1263	break;
1264	}
1265
1266	/*
1267	* If the AudioVideoRec object is still alive, we must clear it's reference to
1268	* us since we'll be invalid when we return from this method.
1269	*/
1270	if (pThis->pAudioVideoRec)
1271	{
1272	pThis->pAudioVideoRec->mpDrv = NULL;
1273	pThis->pAudioVideoRec = NULL;
1274	}
1275
1276	LogFlowFuncLeave();
1277	}
1278
1279
1280	/**
1281	* @interface_method_impl{PDMDRVREG,pfnAttach}
1282	*/
1283	/* static */
1284	DECLCALLBACK(int) AudioVideoRec::drvAttach(PPDMDRVINS pDrvIns, uint32_t fFlags)
1285	{
1286	RT_NOREF(pDrvIns, fFlags);
1287
1288	LogFlowFuncEnter();
1289
1290	return VINF_SUCCESS;
1291	}
1292
1293	/**
1294	* @interface_method_impl{PDMDRVREG,pfnDetach}
1295	*/
1296	/* static */
1297	DECLCALLBACK(void) AudioVideoRec::drvDetach(PPDMDRVINS pDrvIns, uint32_t fFlags)
1298	{
1299	RT_NOREF(pDrvIns, fFlags);
1300
1301	LogFlowFuncEnter();
1302	}
1303
1304	/**
1305	* Video recording audio driver registration record.
1306	*/
1307	const PDMDRVREG AudioVideoRec::DrvReg =
1308	{
1309	PDM_DRVREG_VERSION,
1310	/* szName */
1311	"AudioVideoRec",
1312	/* szRCMod */
1313	"",
1314	/* szR0Mod */
1315	"",
1316	/* pszDescription */
1317	"Audio driver for video recording",
1318	/* fFlags */
1319	PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
1320	/* fClass. */
1321	PDM_DRVREG_CLASS_AUDIO,
1322	/* cMaxInstances */
1323	~0U,
1324	/* cbInstance */
1325	sizeof(DRVAUDIORECORDING),
1326	/* pfnConstruct */
1327	AudioVideoRec::drvConstruct,
1328	/* pfnDestruct */
1329	AudioVideoRec::drvDestruct,
1330	/* pfnRelocate */
1331	NULL,
1332	/* pfnIOCtl */
1333	NULL,
1334	/* pfnPowerOn */
1335	NULL,
1336	/* pfnReset */
1337	NULL,
1338	/* pfnSuspend */
1339	NULL,
1340	/* pfnResume */
1341	NULL,
1342	/* pfnAttach */
1343	AudioVideoRec::drvAttach,
1344	/* pfnDetach */
1345	AudioVideoRec::drvDetach,
1346	/* pfnPowerOff */
1347	NULL,
1348	/* pfnSoftReset */
1349	NULL,
1350	/* u32EndVersion */
1351	PDM_DRVREG_VERSION
1352	};
1353

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source: vbox/trunk/src/VBox/Main/src-client/DrvAudioRec.cpp@ 80862

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