VirtualBox

source: vbox/trunk/src/VBox/Main/src-client/DrvAudioVideoRec.cpp@ 65205

Last change on this file since 65205 was 65205, checked in by vboxsync, 8 years ago

DrvAudioVideoRec.cpp: pvDst[_4K] should be abDst[_4K].
  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 18.3 KB
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1/* $Id: DrvAudioVideoRec.cpp 65205 2017-01-09 13:20:36Z 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.215389.xyz. 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_AUDIO
23#include <VBox/log.h>
24#include "DrvAudioVideoRec.h"
25#include "ConsoleImpl.h"
26
27#include "Logging.h"
28
29#include "../../Devices/Audio/DrvAudio.h"
30#include "../../Devices/Audio/AudioMixBuffer.h"
31#include "EbmlWriter.h"
32
33#include <iprt/mem.h>
34#include <iprt/cdefs.h>
35#include <iprt/circbuf.h>
36
37#include <VBox/vmm/pdmaudioifs.h>
38#include <VBox/vmm/pdmdrv.h>
39#include <VBox/vmm/cfgm.h>
40#include <VBox/err.h>
41
42#include <opus.h>
43
44
45/*********************************************************************************************************************************
46* Structures and Typedefs *
47*********************************************************************************************************************************/
48
49/**
50 * Enumeration for audio/video recording driver recording mode.
51 */
52typedef enum AVRECMODE
53{
54 /** Unknown / invalid recording mode. */
55 AVRECMODE_UNKNOWN = 0,
56 /** Only record audio.
57 * This mode does not need to talk to the video recording driver,
58 * as this driver then simply creates an own WebM container. */
59 AVRECMODE_AUDIO = 1,
60 /** Records audio and video.
61 * Needs to work together with the video recording driver in
62 * order to get a full-featured WebM container. */
63 AVRECMODE_AUDIO_VIDEO = 2
64} AVRECMODE;
65
66/**
67 * Structure for keeping codec specific data.
68 */
69typedef struct AVRECCODEC
70{
71 union
72 {
73 struct
74 {
75 /** Encoder we're going to use. */
76 OpusEncoder *pEnc;
77 } Opus;
78 };
79} AVRECCODEC, *PAVRECCODEC;
80
81/**
82 * Audio video recording output stream.
83 */
84typedef struct AVRECSTREAMOUT
85{
86 /** Note: Always must come first! */
87 PDMAUDIOSTREAM Stream;
88 /** The PCM properties of this stream. */
89 PDMAUDIOPCMPROPS Props;
90 uint64_t old_ticks;
91 uint64_t cSamplesSentPerSec;
92 /** Codec data.
93 * As every stream can be different, one codec per stream is needed. */
94 AVRECCODEC Codec;
95} AVRECSTREAMOUT, *PAVRECSTREAMOUT;
96
97/**
98 * Video recording audio driver instance data.
99 */
100typedef struct DRVAUDIOVIDEOREC
101{
102 /** Pointer to audio video recording object. */
103 AudioVideoRec *pAudioVideoRec;
104 /** Pointer to the driver instance structure. */
105 PPDMDRVINS pDrvIns;
106 /** Pointer to host audio interface. */
107 PDMIHOSTAUDIO IHostAudio;
108 /** Pointer to the DrvAudio port interface that is above us. */
109 PPDMIAUDIOCONNECTOR pDrvAudio;
110 /** Recording mode. */
111 AVRECMODE enmMode;
112 /** Pointer to WebM container to write recorded audio data to.
113 * See the AVRECMODE enumeration for more information. */
114 WebMWriter *pEBML;
115} DRVAUDIOVIDEOREC, *PDRVAUDIOVIDEOREC;
116
117/** Makes DRVAUDIOVIDEOREC out of PDMIHOSTAUDIO. */
118#define PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface) \
119 ( (PDRVAUDIOVIDEOREC)((uintptr_t)pInterface - RT_OFFSETOF(DRVAUDIOVIDEOREC, IHostAudio)) )
120
121
122static int avRecCreateStreamOut(PPDMIHOSTAUDIO pInterface,
123 PPDMAUDIOSTREAM pStream, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
124{
125 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
126 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
127 AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
128 AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
129
130 PAVRECSTREAMOUT pStreamOut = (PAVRECSTREAMOUT)pStream;
131
132 int rc = DrvAudioHlpStreamCfgToProps(pCfgReq, &pStreamOut->Props);
133 if (RT_SUCCESS(rc))
134 {
135 OpusEncoder *pEnc = NULL;
136
137 int orc;
138 pEnc = opus_encoder_create(48000 /* Hz */, 2 /* Stereo */, OPUS_APPLICATION_AUDIO, &orc);
139 if (orc != OPUS_OK)
140 {
141 LogRel(("VideoRec: Audio codec failed to initialize: %s\n", opus_strerror(orc)));
142 return VERR_AUDIO_BACKEND_INIT_FAILED;
143 }
144
145 AssertPtr(pEnc);
146
147 orc = opus_encoder_ctl(pEnc, OPUS_SET_BITRATE(pCfgReq->uHz));
148 if (orc != OPUS_OK)
149 {
150 LogRel(("VideoRec: Audio codec failed to set bitrate: %s\n", opus_strerror(orc)));
151 rc = VERR_AUDIO_BACKEND_INIT_FAILED;
152 }
153 else
154 {
155 pStreamOut->Codec.Opus.pEnc = pEnc;
156
157 if (pCfgAcq)
158 pCfgAcq->cSampleBufferSize = _4K; /** @todo Make this configurable. */
159 }
160 }
161
162 LogFlowFuncLeaveRC(VINF_SUCCESS);
163 return VINF_SUCCESS;
164}
165
166
167static int avRecControlStreamOut(PPDMIHOSTAUDIO pInterface,
168 PPDMAUDIOSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
169{
170 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
171 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
172 RT_NOREF(enmStreamCmd);
173
174 PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
175 RT_NOREF(pThis);
176
177 LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd));
178
179 AudioMixBufReset(&pStream->MixBuf);
180
181 return VINF_SUCCESS;
182}
183
184
185/**
186 * @interface_method_impl{PDMIHOSTAUDIO,pfnInit}
187 */
188static DECLCALLBACK(int) drvAudioVideoRecInit(PPDMIHOSTAUDIO pInterface)
189{
190 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
191
192 LogFlowFuncEnter();
193
194 PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
195
196 pThis->enmMode = AVRECMODE_AUDIO;
197
198 int rc;
199
200 try
201 {
202 switch (pThis->enmMode)
203 {
204 case AVRECMODE_AUDIO:
205 {
206 pThis->pEBML = new WebMWriter();
207 pThis->pEBML->create("/tmp/test.webm", WebMWriter::Mode_Audio); /** @todo FIX! */
208 break;
209 }
210
211 case AVRECMODE_AUDIO_VIDEO:
212 {
213 break;
214 }
215
216 default:
217 rc = VERR_NOT_SUPPORTED;
218 break;
219 }
220 }
221 catch (std::bad_alloc)
222 {
223 rc = VERR_NO_MEMORY;
224 }
225
226 if (RT_FAILURE(rc))
227 {
228 LogRel(("VideoRec: Audio recording driver failed to initialize, rc=%Rrc\n", rc));
229 }
230 else
231 LogRel2(("VideoRec: Audio recording driver initialized\n"));
232
233 return rc;
234}
235
236
237/**
238 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture}
239 */
240static DECLCALLBACK(int) drvAudioVideoRecStreamCapture(PPDMIHOSTAUDIO pInterface,
241 PPDMAUDIOSTREAM pStream, void *pvBuf, uint32_t cbBuf, uint32_t *pcbRead)
242{
243 RT_NOREF(pInterface, pStream, pvBuf, cbBuf);
244
245 if (pcbRead)
246 *pcbRead = 0;
247
248 return VINF_SUCCESS;
249}
250
251
252/**
253 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay}
254 */
255static DECLCALLBACK(int) drvAudioVideoRecStreamPlay(PPDMIHOSTAUDIO pInterface,
256 PPDMAUDIOSTREAM pStream, const void *pvBuf, uint32_t cbBuf, uint32_t *pcbWritten)
257{
258 RT_NOREF2(pvBuf, cbBuf);
259
260 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
261 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
262 /* pcbWritten is optional. */
263
264 PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
265 PAVRECSTREAMOUT pStreamOut = (PAVRECSTREAMOUT)pStream;
266
267 uint32_t cLive = AudioMixBufLive(&pStream->MixBuf);
268
269 uint64_t now = PDMDrvHlpTMGetVirtualTime(pThis->pDrvIns);
270 uint64_t ticks = now - pStreamOut->old_ticks;
271 uint64_t ticks_per_second = PDMDrvHlpTMGetVirtualFreq(pThis->pDrvIns);
272
273 /* Minimize the rounding error: samples = int((ticks * freq) / ticks_per_second + 0.5). */
274 uint32_t cSamplesPlayed = (int)((2 * ticks * pStreamOut->Props.uHz + ticks_per_second) / ticks_per_second / 2);
275
276 /* Don't play more than available. */
277 if (cSamplesPlayed > cLive)
278 cSamplesPlayed = cLive;
279
280 /* Remember when samples were consumed. */
281 pStreamOut->old_ticks = now;
282
283 int cSamplesToSend = cSamplesPlayed;
284
285 LogFlowFunc(("uFreq=%RU32, cChan=%RU8, cBits=%RU8, fSigned=%RTbool, cSamplesToSend=%RU32\n",
286 pStreamOut->Props.uHz, pStreamOut->Props.cChannels,
287 pStreamOut->Props.cBits, pStreamOut->Props.fSigned, cSamplesToSend));
288
289 /*
290 * Call the encoder server with the data.
291 */
292 uint32_t cReadTotal = 0;
293
294 uint8_t abDst[_4K];
295 opus_int32 cbDst = (opus_int32)sizeof(abDst);
296
297 PPDMAUDIOSAMPLE pSamples;
298 uint32_t cRead;
299 int rc = AudioMixBufAcquire(&pStream->MixBuf, cSamplesToSend,
300 &pSamples, &cRead);
301 if ( RT_SUCCESS(rc)
302 && cRead)
303 {
304 cReadTotal = cRead;
305
306 opus_int32 orc = opus_encode(pStreamOut->Codec.Opus.pEnc, (opus_int16 *)pSamples, cRead, abDst, cbDst);
307 if (orc != OPUS_OK)
308 LogFunc(("Encoding (1) failed: %s\n", opus_strerror(orc)));
309
310 if (rc == VINF_TRY_AGAIN)
311 {
312 rc = AudioMixBufAcquire(&pStream->MixBuf, cSamplesToSend - cRead,
313 &pSamples, &cRead);
314
315
316
317 cReadTotal += cRead;
318 }
319 }
320
321 AudioMixBufFinish(&pStream->MixBuf, cSamplesToSend);
322
323 /*
324 * Always report back all samples acquired, regardless of whether the
325 * encoder actually did process those.
326 */
327 if (pcbWritten)
328 *pcbWritten = cReadTotal;
329
330 LogFlowFunc(("cReadTotal=%RU32, rc=%Rrc\n", cReadTotal, rc));
331 return rc;
332}
333
334
335static int avRecDestroyStreamOut(PPDMIHOSTAUDIO pInterface, PPDMAUDIOSTREAM pStream)
336{
337 PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
338 RT_NOREF(pThis);
339 PAVRECSTREAMOUT pStreamOut = (PAVRECSTREAMOUT)pStream;
340
341 if (pStreamOut->Codec.Opus.pEnc)
342 {
343 opus_encoder_destroy(pStreamOut->Codec.Opus.pEnc);
344 pStreamOut->Codec.Opus.pEnc = NULL;
345 }
346
347 return VINF_SUCCESS;
348}
349
350
351/**
352 * @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig}
353 */
354static DECLCALLBACK(int) drvAudioVideoRecGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg)
355{
356 NOREF(pInterface);
357 AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER);
358
359 pBackendCfg->cbStreamOut = sizeof(AVRECSTREAMOUT);
360 pBackendCfg->cbStreamIn = 0;
361 pBackendCfg->cMaxStreamsIn = 0;
362 pBackendCfg->cMaxStreamsOut = UINT32_MAX;
363
364 return VINF_SUCCESS;
365}
366
367
368/**
369 * @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown}
370 */
371static DECLCALLBACK(void) drvAudioVideoRecShutdown(PPDMIHOSTAUDIO pInterface)
372{
373 LogFlowFuncEnter();
374
375 PDRVAUDIOVIDEOREC pThis = PDMIHOSTAUDIO_2_DRVAUDIOVIDEOREC(pInterface);
376
377 int rc;
378
379 switch (pThis->enmMode)
380 {
381 case AVRECMODE_AUDIO:
382 {
383 if (pThis->pEBML)
384 {
385 rc = pThis->pEBML->writeFooter(0 /* Hash */);
386 AssertRC(rc);
387
388 pThis->pEBML->close();
389
390 delete pThis->pEBML;
391 pThis->pEBML = NULL;
392 }
393 break;
394 }
395
396 case AVRECMODE_AUDIO_VIDEO:
397 {
398 break;
399 }
400
401 default:
402 rc = VERR_NOT_SUPPORTED;
403 break;
404 }
405
406 LogFlowFuncLeaveRC(rc);
407}
408
409
410/**
411 * @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus}
412 */
413static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvAudioVideoRecGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir)
414{
415 RT_NOREF(enmDir);
416 AssertPtrReturn(pInterface, PDMAUDIOBACKENDSTS_UNKNOWN);
417
418 return PDMAUDIOBACKENDSTS_RUNNING;
419}
420
421
422/**
423 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate}
424 */
425static DECLCALLBACK(int) drvAudioVideoRecStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOSTREAM pStream,
426 PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq)
427{
428 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
429 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
430 AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER);
431 AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER);
432
433 if (pCfgReq->enmDir == PDMAUDIODIR_OUT)
434 return avRecCreateStreamOut(pInterface, pStream, pCfgReq, pCfgAcq);
435
436 return VERR_NOT_SUPPORTED;
437}
438
439
440/**
441 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy}
442 */
443static DECLCALLBACK(int) drvAudioVideoRecStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOSTREAM pStream)
444{
445 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
446 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
447
448 if (pStream->enmDir == PDMAUDIODIR_OUT)
449 return avRecDestroyStreamOut(pInterface, pStream);
450
451 return VINF_SUCCESS;
452}
453
454
455/**
456 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl}
457 */
458static DECLCALLBACK(int) drvAudioVideoRecStreamControl(PPDMIHOSTAUDIO pInterface,
459 PPDMAUDIOSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd)
460{
461 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
462 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
463
464 Assert(pStream->enmCtx == PDMAUDIOSTREAMCTX_HOST);
465
466 if (pStream->enmDir == PDMAUDIODIR_OUT)
467 return avRecControlStreamOut(pInterface, pStream, enmStreamCmd);
468
469 return VINF_SUCCESS;
470}
471
472
473/**
474 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus}
475 */
476static DECLCALLBACK(PDMAUDIOSTRMSTS) drvAudioVideoRecStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOSTREAM pStream)
477{
478 NOREF(pInterface);
479 NOREF(pStream);
480
481 return ( PDMAUDIOSTRMSTS_FLAG_INITIALIZED | PDMAUDIOSTRMSTS_FLAG_ENABLED
482 | PDMAUDIOSTRMSTS_FLAG_DATA_READABLE | PDMAUDIOSTRMSTS_FLAG_DATA_WRITABLE);
483}
484
485
486/**
487 * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate}
488 */
489static DECLCALLBACK(int) drvAudioVideoRecStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOSTREAM pStream)
490{
491 AssertPtrReturn(pInterface, VERR_INVALID_POINTER);
492 AssertPtrReturn(pStream, VERR_INVALID_POINTER);
493
494 LogFlowFuncEnter();
495
496 /* Nothing to do here for video recording. */
497 return VINF_SUCCESS;
498}
499
500
501/**
502 * @interface_method_impl{PDMIBASE,pfnQueryInterface}
503 */
504static DECLCALLBACK(void *) drvAudioVideoRecQueryInterface(PPDMIBASE pInterface, const char *pszIID)
505{
506 PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface);
507 PDRVAUDIOVIDEOREC pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVIDEOREC);
508
509 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase);
510 PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio);
511 return NULL;
512}
513
514
515AudioVideoRec::AudioVideoRec(Console *pConsole)
516 : mpDrv(NULL),
517 mParent(pConsole)
518{
519}
520
521
522AudioVideoRec::~AudioVideoRec(void)
523{
524 if (mpDrv)
525 {
526 mpDrv->pAudioVideoRec = NULL;
527 mpDrv = NULL;
528 }
529}
530
531
532/**
533 * Construct a audio video recording driver instance.
534 *
535 * @copydoc FNPDMDRVCONSTRUCT
536 */
537/* static */
538DECLCALLBACK(int) AudioVideoRec::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags)
539{
540 RT_NOREF(fFlags);
541
542 PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns);
543 PDRVAUDIOVIDEOREC pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVIDEOREC);
544
545 AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER);
546 AssertPtrReturn(pCfg, VERR_INVALID_POINTER);
547
548 LogRel(("Audio: Initializing video recording audio driver\n"));
549 LogFlowFunc(("fFlags=0x%x\n", fFlags));
550
551 AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER,
552 ("Configuration error: Not possible to attach anything to this driver!\n"),
553 VERR_PDM_DRVINS_NO_ATTACH);
554
555 /*
556 * Init the static parts.
557 */
558 pThis->pDrvIns = pDrvIns;
559 /* IBase */
560 pDrvIns->IBase.pfnQueryInterface = drvAudioVideoRecQueryInterface;
561 /* IHostAudio */
562 PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvAudioVideoRec);
563
564 /*
565 * Get the AudioVideoRec object pointer.
566 */
567 void *pvUser = NULL;
568 int rc = CFGMR3QueryPtr(pCfg, "Object", &pvUser); /** @todo r=andy Get rid of this hack and use IHostAudio::SetCallback. */
569 AssertMsgRCReturn(rc, ("Confguration error: No/bad \"Object\" value, rc=%Rrc\n", rc), rc);
570
571 pThis->pAudioVideoRec = (AudioVideoRec *)pvUser;
572 pThis->pAudioVideoRec->mpDrv = pThis;
573
574 /*
575 * Get the interface for the above driver (DrvAudio) to make mixer/conversion calls.
576 * Described in CFGM tree.
577 */
578 pThis->pDrvAudio = PDMIBASE_QUERY_INTERFACE(pDrvIns->pUpBase, PDMIAUDIOCONNECTOR);
579 AssertMsgReturn(pThis->pDrvAudio, ("Configuration error: No upper interface specified!\n"), VERR_PDM_MISSING_INTERFACE_ABOVE);
580
581 return VINF_SUCCESS;
582}
583
584
585/**
586 * @interface_method_impl{PDMDRVREG,pfnDestruct}
587 */
588/* static */
589DECLCALLBACK(void) AudioVideoRec::drvDestruct(PPDMDRVINS pDrvIns)
590{
591 PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns);
592 PDRVAUDIOVIDEOREC pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIOVIDEOREC);
593 LogFlowFuncEnter();
594
595 /*
596 * If the AudioVideoRec object is still alive, we must clear it's reference to
597 * us since we'll be invalid when we return from this method.
598 */
599 if (pThis->pAudioVideoRec)
600 {
601 pThis->pAudioVideoRec->mpDrv = NULL;
602 pThis->pAudioVideoRec = NULL;
603 }
604}
605
606
607/**
608 * Video recording audio driver registration record.
609 */
610const PDMDRVREG AudioVideoRec::DrvReg =
611{
612 PDM_DRVREG_VERSION,
613 /* szName */
614 "AudioVideoRec",
615 /* szRCMod */
616 "",
617 /* szR0Mod */
618 "",
619 /* pszDescription */
620 "Audio driver for video recording",
621 /* fFlags */
622 PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT,
623 /* fClass. */
624 PDM_DRVREG_CLASS_AUDIO,
625 /* cMaxInstances */
626 ~0U,
627 /* cbInstance */
628 sizeof(DRVAUDIOVIDEOREC),
629 /* pfnConstruct */
630 AudioVideoRec::drvConstruct,
631 /* pfnDestruct */
632 AudioVideoRec::drvDestruct,
633 /* pfnRelocate */
634 NULL,
635 /* pfnIOCtl */
636 NULL,
637 /* pfnPowerOn */
638 NULL,
639 /* pfnReset */
640 NULL,
641 /* pfnSuspend */
642 NULL,
643 /* pfnResume */
644 NULL,
645 /* pfnAttach */
646 NULL,
647 /* pfnDetach */
648 NULL,
649 /* pfnPowerOff */
650 NULL,
651 /* pfnSoftReset */
652 NULL,
653 /* u32EndVersion */
654 PDM_DRVREG_VERSION
655};
656
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