/* $Id: DrvAudioRec.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */ /** @file * Video recording audio backend for Main. * * This driver is part of Main and is responsible for providing audio * data to Main's video capturing feature. * * The driver itself implements a PDM host audio backend, which in turn * provides the driver with the required audio data and audio events. * * For now there is support for the following destinations (called "sinks"): * * - Direct writing of .webm files to the host. * - Communicating with Main via the Console object to send the encoded audio data to. * The Console object in turn then will route the data to the Display / video capturing interface then. */ /* * Copyright (C) 2016-2022 Oracle and/or its affiliates. * * This file is part of VirtualBox base platform packages, as * available from https://www.virtualbox.org. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, in version 3 of the * License. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, see . * * SPDX-License-Identifier: GPL-3.0-only */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_RECORDING #include "LoggingNew.h" #include "DrvAudioRec.h" #include "ConsoleImpl.h" #include "WebMWriter.h" #include #include #include "VBox/com/VirtualBox.h" #include #include #include #include #include #include #include "VBox/settings.h" /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ /** * Enumeration for specifying the recording container type. */ typedef enum AVRECCONTAINERTYPE { /** Unknown / invalid container type. */ AVRECCONTAINERTYPE_UNKNOWN = 0, /** Recorded data goes to Main / Console. */ AVRECCONTAINERTYPE_MAIN_CONSOLE = 1, /** Recorded data will be written to a .webm file. */ AVRECCONTAINERTYPE_WEBM = 2 } AVRECCONTAINERTYPE; /** * Structure for keeping generic container parameters. */ typedef struct AVRECCONTAINERPARMS { /** Stream index (hint). */ uint32_t idxStream; /** The container's type. */ AVRECCONTAINERTYPE enmType; union { /** WebM file specifics. */ struct { /** Allocated file name to write .webm file to. Must be free'd. */ char *pszFile; } WebM; }; } AVRECCONTAINERPARMS, *PAVRECCONTAINERPARMS; /** * Structure for keeping container-specific data. */ typedef struct AVRECCONTAINER { /** Generic container parameters. */ AVRECCONTAINERPARMS Parms; union { struct { /** Pointer to Console. */ Console *pConsole; } Main; struct { /** Pointer to WebM container to write recorded audio data to. * See the AVRECMODE enumeration for more information. */ WebMWriter *pWebM; /** Assigned track number from WebM container. */ uint8_t uTrack; } WebM; }; } AVRECCONTAINER, *PAVRECCONTAINER; /** * Audio video recording sink. */ typedef struct AVRECSINK { /** Pointer (weak) to recording stream to bind to. */ RecordingStream *pRecStream; /** Container data to use for data processing. */ AVRECCONTAINER Con; /** Timestamp (in ms) of when the sink was created. */ uint64_t tsStartMs; } AVRECSINK, *PAVRECSINK; /** * Audio video recording (output) stream. */ typedef struct AVRECSTREAM { /** Common part. */ PDMAUDIOBACKENDSTREAM Core; /** The stream's acquired configuration. */ PDMAUDIOSTREAMCFG Cfg; /** (Audio) frame buffer. */ PRTCIRCBUF pCircBuf; /** Pointer to sink to use for writing. */ PAVRECSINK pSink; /** Last encoded PTS (in ms). */ uint64_t uLastPTSMs; /** Temporary buffer for the input (source) data to encode. */ void *pvSrcBuf; /** Size (in bytes) of the temporary buffer holding the input (source) data to encode. */ size_t cbSrcBuf; } AVRECSTREAM, *PAVRECSTREAM; /** * Video recording audio driver instance data. */ typedef struct DRVAUDIORECORDING { /** Pointer to audio video recording object. */ AudioVideoRec *pAudioVideoRec; /** Pointer to the driver instance structure. */ PPDMDRVINS pDrvIns; /** Pointer to host audio interface. */ PDMIHOSTAUDIO IHostAudio; /** Pointer to the console object. */ ComPtr pConsole; /** Pointer to the DrvAudio port interface that is above us. */ AVRECCONTAINERPARMS ContainerParms; /** Weak pointer to recording context to use. */ RecordingContext *pRecCtx; /** The driver's sink for writing output to. */ AVRECSINK Sink; } DRVAUDIORECORDING, *PDRVAUDIORECORDING; AudioVideoRec::AudioVideoRec(Console *pConsole) : AudioDriver(pConsole) , mpDrv(NULL) { } AudioVideoRec::~AudioVideoRec(void) { if (mpDrv) { mpDrv->pAudioVideoRec = NULL; mpDrv = NULL; } } /** * Applies recording settings to this driver instance. * * @returns VBox status code. * @param Settings Recording settings to apply. */ int AudioVideoRec::applyConfiguration(const settings::RecordingSettings &Settings) { /** @todo Do some validation here. */ mSettings = Settings; /* Note: Does have an own copy operator. */ return VINF_SUCCESS; } int AudioVideoRec::configureDriver(PCFGMNODE pLunCfg, PCVMMR3VTABLE pVMM) { /** @todo For now we're using the configuration of the first screen (screen 0) here audio-wise. */ unsigned const idxScreen = 0; AssertReturn(mSettings.mapScreens.size() >= 1, VERR_INVALID_PARAMETER); const settings::RecordingScreenSettings &screenSettings = mSettings.mapScreens[idxScreen]; int vrc = pVMM->pfnCFGMR3InsertInteger(pLunCfg, "ContainerType", (uint64_t)screenSettings.enmDest); AssertRCReturn(vrc, vrc); if (screenSettings.enmDest == RecordingDestination_File) { vrc = pVMM->pfnCFGMR3InsertString(pLunCfg, "ContainerFileName", Utf8Str(screenSettings.File.strName).c_str()); AssertRCReturn(vrc, vrc); } vrc = pVMM->pfnCFGMR3InsertInteger(pLunCfg, "StreamIndex", (uint32_t)idxScreen); AssertRCReturn(vrc, vrc); return AudioDriver::configureDriver(pLunCfg, pVMM); } /********************************************************************************************************************************* * PDMIHOSTAUDIO * *********************************************************************************************************************************/ /** * @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig} */ static DECLCALLBACK(int) drvAudioVideoRecHA_GetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg) { RT_NOREF(pInterface); AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER); /* * Fill in the config structure. */ RTStrCopy(pBackendCfg->szName, sizeof(pBackendCfg->szName), "VideoRec"); pBackendCfg->cbStream = sizeof(AVRECSTREAM); pBackendCfg->fFlags = 0; pBackendCfg->cMaxStreamsIn = 0; pBackendCfg->cMaxStreamsOut = UINT32_MAX; return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus} */ static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvAudioVideoRecHA_GetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir) { RT_NOREF(pInterface, enmDir); return PDMAUDIOBACKENDSTS_RUNNING; } /** * Creates an audio output stream and associates it with the specified recording sink. * * @returns VBox status code. * @param pThis Driver instance. * @param pStreamAV Audio output stream to create. * @param pSink Recording sink to associate audio output stream to. * @param pCfgReq Requested configuration by the audio backend. * @param pCfgAcq Acquired configuration by the audio output stream. */ static int avRecCreateStreamOut(PDRVAUDIORECORDING pThis, PAVRECSTREAM pStreamAV, PAVRECSINK pSink, PCPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq) { AssertPtrReturn(pThis, VERR_INVALID_POINTER); AssertPtrReturn(pStreamAV, VERR_INVALID_POINTER); AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER); AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER); if (pCfgReq->enmPath != PDMAUDIOPATH_OUT_FRONT) { LogRel(("Recording: Support for surround audio not implemented yet\n")); AssertFailed(); return VERR_NOT_SUPPORTED; } PRECORDINGCODEC pCodec = pSink->pRecStream->GetAudioCodec(); /* Stuff which has to be set by now. */ Assert(pCodec->Parms.cbFrame); Assert(pCodec->Parms.msFrame); int vrc = RTCircBufCreate(&pStreamAV->pCircBuf, pCodec->Parms.cbFrame * 2 /* Use "double buffering" */); if (RT_SUCCESS(vrc)) { size_t cbScratchBuf = pCodec->Parms.cbFrame; pStreamAV->pvSrcBuf = RTMemAlloc(cbScratchBuf); if (pStreamAV->pvSrcBuf) { pStreamAV->cbSrcBuf = cbScratchBuf; pStreamAV->pSink = pSink; /* Assign sink to stream. */ pStreamAV->uLastPTSMs = 0; /* Make sure to let the driver backend know that we need the audio data in * a specific sampling rate the codec is optimized for. */ pCfgAcq->Props = pCodec->Parms.Audio.PCMProps; /* Every codec frame marks a period for now. Optimize this later. */ pCfgAcq->Backend.cFramesPeriod = PDMAudioPropsMilliToFrames(&pCfgAcq->Props, pCodec->Parms.msFrame); pCfgAcq->Backend.cFramesBufferSize = pCfgAcq->Backend.cFramesPeriod * 2; pCfgAcq->Backend.cFramesPreBuffering = pCfgAcq->Backend.cFramesPeriod; } else vrc = VERR_NO_MEMORY; } LogFlowFuncLeaveRC(vrc); return vrc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, PCPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq) { PDRVAUDIORECORDING pThis = RT_FROM_CPP_MEMBER(pInterface, DRVAUDIORECORDING, IHostAudio); PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream; AssertPtrReturn(pStreamAV, VERR_INVALID_POINTER); AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER); AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER); if (pCfgReq->enmDir == PDMAUDIODIR_IN) return VERR_NOT_SUPPORTED; /* For now we only have one sink, namely the driver's one. * Later each stream could have its own one, to e.g. router different stream to different sinks .*/ PAVRECSINK pSink = &pThis->Sink; int vrc = avRecCreateStreamOut(pThis, pStreamAV, pSink, pCfgReq, pCfgAcq); PDMAudioStrmCfgCopy(&pStreamAV->Cfg, pCfgAcq); return vrc; } /** * Destroys (closes) an audio output stream. * * @returns VBox status code. * @param pThis Driver instance. * @param pStreamAV Audio output stream to destroy. */ static int avRecDestroyStreamOut(PDRVAUDIORECORDING pThis, PAVRECSTREAM pStreamAV) { RT_NOREF(pThis); if (pStreamAV->pCircBuf) { RTCircBufDestroy(pStreamAV->pCircBuf); pStreamAV->pCircBuf = NULL; } if (pStreamAV->pvSrcBuf) { Assert(pStreamAV->cbSrcBuf); RTMemFree(pStreamAV->pvSrcBuf); pStreamAV->pvSrcBuf = NULL; pStreamAV->cbSrcBuf = 0; } return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, bool fImmediate) { PDRVAUDIORECORDING pThis = RT_FROM_CPP_MEMBER(pInterface, DRVAUDIORECORDING, IHostAudio); PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream; AssertPtrReturn(pStream, VERR_INVALID_POINTER); RT_NOREF(fImmediate); int vrc = VINF_SUCCESS; if (pStreamAV->Cfg.enmDir == PDMAUDIODIR_OUT) vrc = avRecDestroyStreamOut(pThis, pStreamAV); return vrc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamEnable} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamEnable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface, pStream); return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDisable} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamDisable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface, pStream); return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPause} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamPause(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface, pStream); return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamResume} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamResume(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface, pStream); return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDrain} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamDrain(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface, pStream); return VINF_SUCCESS; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetState} */ static DECLCALLBACK(PDMHOSTAUDIOSTREAMSTATE) drvAudioVideoRecHA_StreamGetState(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface); AssertPtrReturn(pStream, PDMHOSTAUDIOSTREAMSTATE_INVALID); return PDMHOSTAUDIOSTREAMSTATE_OKAY; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable} */ static DECLCALLBACK(uint32_t) drvAudioVideoRecHA_StreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface); PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream; RecordingStream *pRecStream = pStreamAV->pSink->pRecStream; PRECORDINGCODEC pCodec = pRecStream->GetAudioCodec(); return pCodec->Parms.cbFrame; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, const void *pvBuf, uint32_t cbBuf, uint32_t *pcbWritten) { RT_NOREF(pInterface); PAVRECSTREAM pStreamAV = (PAVRECSTREAM)pStream; AssertPtrReturn(pStreamAV, VERR_INVALID_POINTER); if (cbBuf) AssertPtrReturn(pvBuf, VERR_INVALID_POINTER); AssertReturn(pcbWritten, VERR_INVALID_PARAMETER); int vrc = VINF_SUCCESS; uint32_t cbWrittenTotal = 0; PRTCIRCBUF pCircBuf = pStreamAV->pCircBuf; AssertPtr(pCircBuf); uint32_t cbToWrite = RT_MIN(cbBuf, (uint32_t)RTCircBufFree(pCircBuf)); AssertReturn(cbToWrite, VERR_BUFFER_OVERFLOW); /* * Write as much as we can into our internal ring buffer. */ while (cbToWrite) { void *pvCircBuf = NULL; size_t cbCircBuf = 0; RTCircBufAcquireWriteBlock(pCircBuf, cbToWrite, &pvCircBuf, &cbCircBuf); Log3Func(("cbToWrite=%RU32, cbCircBuf=%zu\n", cbToWrite, cbCircBuf)); memcpy(pvCircBuf, (uint8_t *)pvBuf + cbWrittenTotal, cbCircBuf), cbWrittenTotal += (uint32_t)cbCircBuf; Assert(cbWrittenTotal <= cbBuf); Assert(cbToWrite >= cbCircBuf); cbToWrite -= (uint32_t)cbCircBuf; RTCircBufReleaseWriteBlock(pCircBuf, cbCircBuf); } RecordingStream *pRecStream = pStreamAV->pSink->pRecStream; PRECORDINGCODEC pCodec = pRecStream->GetAudioCodec(); /* * Process our internal ring buffer and send the obtained audio data to our encoding thread. */ cbToWrite = (uint32_t)RTCircBufUsed(pCircBuf); /** @todo Can we encode more than a frame at a time? Optimize this! */ uint32_t const cbFrame = pCodec->Parms.cbFrame; /* Only encode data if we have data for at least one full codec frame. */ while (cbToWrite >= cbFrame) { uint32_t cbSrc = 0; do { void *pvCircBuf = NULL; size_t cbCircBuf = 0; RTCircBufAcquireReadBlock(pCircBuf, cbFrame - cbSrc, &pvCircBuf, &cbCircBuf); Log3Func(("cbSrc=%RU32, cbCircBuf=%zu\n", cbSrc, cbCircBuf)); memcpy((uint8_t *)pStreamAV->pvSrcBuf + cbSrc, pvCircBuf, cbCircBuf); cbSrc += (uint32_t)cbCircBuf; Assert(cbSrc <= pStreamAV->cbSrcBuf); Assert(cbSrc <= cbFrame); RTCircBufReleaseReadBlock(pCircBuf, cbCircBuf); if (cbSrc == cbFrame) /* Only send full codec frames. */ { vrc = pRecStream->SendAudioFrame(pStreamAV->pvSrcBuf, cbSrc, RTTimeProgramMilliTS()); if (RT_FAILURE(vrc)) break; } } while (cbSrc < cbFrame); Assert(cbToWrite >= cbFrame); cbToWrite -= cbFrame; if (RT_FAILURE(vrc)) break; } /* while */ *pcbWritten = cbWrittenTotal; LogFlowFunc(("cbBuf=%RU32, cbWrittenTotal=%RU32, vrc=%Rrc\n", cbBuf, cbWrittenTotal, vrc)); return VINF_SUCCESS; /* Don't propagate encoding errors to the caller. */ } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable} */ static DECLCALLBACK(uint32_t) drvAudioVideoRecHA_StreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { RT_NOREF(pInterface, pStream); return 0; /* Video capturing does not provide any input. */ } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture} */ static DECLCALLBACK(int) drvAudioVideoRecHA_StreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, void *pvBuf, uint32_t cbBuf, uint32_t *pcbRead) { RT_NOREF(pInterface, pStream, pvBuf, cbBuf); *pcbRead = 0; return VINF_SUCCESS; } /********************************************************************************************************************************* * PDMIBASE * *********************************************************************************************************************************/ /** * @interface_method_impl{PDMIBASE,pfnQueryInterface} */ static DECLCALLBACK(void *) drvAudioVideoRecQueryInterface(PPDMIBASE pInterface, const char *pszIID) { PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface); PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING); PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase); PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio); return NULL; } /********************************************************************************************************************************* * PDMDRVREG * *********************************************************************************************************************************/ /** * Shuts down (closes) a recording sink, * * @returns VBox status code. * @param pSink Recording sink to shut down. */ static void avRecSinkShutdown(PAVRECSINK pSink) { AssertPtrReturnVoid(pSink); pSink->pRecStream = NULL; switch (pSink->Con.Parms.enmType) { case AVRECCONTAINERTYPE_WEBM: { if (pSink->Con.WebM.pWebM) { LogRel2(("Recording: Finished recording audio to file '%s' (%zu bytes)\n", pSink->Con.WebM.pWebM->GetFileName().c_str(), pSink->Con.WebM.pWebM->GetFileSize())); int vrc2 = pSink->Con.WebM.pWebM->Close(); AssertRC(vrc2); delete pSink->Con.WebM.pWebM; pSink->Con.WebM.pWebM = NULL; } break; } case AVRECCONTAINERTYPE_MAIN_CONSOLE: RT_FALL_THROUGH(); default: break; } } /** * @interface_method_impl{PDMDRVREG,pfnPowerOff} */ /*static*/ DECLCALLBACK(void) AudioVideoRec::drvPowerOff(PPDMDRVINS pDrvIns) { PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING); LogFlowFuncEnter(); avRecSinkShutdown(&pThis->Sink); } /** * @interface_method_impl{PDMDRVREG,pfnDestruct} */ /*static*/ DECLCALLBACK(void) AudioVideoRec::drvDestruct(PPDMDRVINS pDrvIns) { PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns); PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING); LogFlowFuncEnter(); switch (pThis->ContainerParms.enmType) { case AVRECCONTAINERTYPE_WEBM: { avRecSinkShutdown(&pThis->Sink); RTStrFree(pThis->ContainerParms.WebM.pszFile); break; } default: break; } /* * If the AudioVideoRec object is still alive, we must clear it's reference to * us since we'll be invalid when we return from this method. */ if (pThis->pAudioVideoRec) { pThis->pAudioVideoRec->mpDrv = NULL; pThis->pAudioVideoRec = NULL; } LogFlowFuncLeave(); } /** * Initializes a recording sink. * * @returns VBox status code. * @param pThis Driver instance. * @param pSink Sink to initialize. * @param pConParms Container parameters to set. * @param pStream Recording stream to asssign sink to. */ static int avRecSinkInit(PDRVAUDIORECORDING pThis, PAVRECSINK pSink, PAVRECCONTAINERPARMS pConParms, RecordingStream *pStream) { pSink->pRecStream = pStream; int vrc = VINF_SUCCESS; /* * Container setup. */ try { switch (pConParms->enmType) { case AVRECCONTAINERTYPE_MAIN_CONSOLE: { if (pThis->pConsole) { pSink->Con.Main.pConsole = pThis->pConsole; } else vrc = VERR_NOT_SUPPORTED; break; } case AVRECCONTAINERTYPE_WEBM: { #if 0 /* If we only record audio, create our own WebM writer instance here. */ if (!pSink->Con.WebM.pWebM) /* Do we already have our WebM writer instance? */ { /** @todo Add sink name / number to file name. */ const char *pszFile = pSink->Con.Parms.WebM.pszFile; AssertPtr(pszFile); pSink->Con.WebM.pWebM = new WebMWriter(); vrc = pSink->Con.WebM.pWebM->Open(pszFile, /** @todo Add option to add some suffix if file exists instead of overwriting? */ RTFILE_O_CREATE_REPLACE | RTFILE_O_WRITE | RTFILE_O_DENY_NONE, pSink->pCodec->Parms.enmAudioCodec, RecordingVideoCodec_None); if (RT_SUCCESS(vrc)) { const PPDMAUDIOPCMPROPS pPCMProps = &pCodec->Parms.Audio.PCMProps; vrc = pSink->Con.WebM.pWebM->AddAudioTrack(pSink->pCodec, PDMAudioPropsHz(pPCMProps), PDMAudioPropsChannels(pPCMProps), PDMAudioPropsSampleBits(pPCMProps), &pSink->Con.WebM.uTrack); if (RT_SUCCESS(vrc)) { LogRel(("Recording: Recording audio to audio file '%s'\n", pszFile)); } else LogRel(("Recording: Error creating audio track for audio file '%s' (%Rrc)\n", pszFile, vrc)); } else LogRel(("Recording: Error creating audio file '%s' (%Rrc)\n", pszFile, vrc)); } break; #endif } default: vrc = VERR_NOT_SUPPORTED; break; } } catch (std::bad_alloc &) { vrc = VERR_NO_MEMORY; } if (RT_SUCCESS(vrc)) { pSink->Con.Parms.enmType = pConParms->enmType; pSink->tsStartMs = RTTimeMilliTS(); return VINF_SUCCESS; } LogRel(("Recording: Error creating sink (%Rrc)\n", vrc)); return vrc; } /** * Construct a audio video recording driver instance. * * @copydoc FNPDMDRVCONSTRUCT */ /*static*/ DECLCALLBACK(int) AudioVideoRec::drvConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags) { PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns); PDRVAUDIORECORDING pThis = PDMINS_2_DATA(pDrvIns, PDRVAUDIORECORDING); RT_NOREF(fFlags); LogRel(("Audio: Initializing video recording audio driver\n")); LogFlowFunc(("fFlags=0x%x\n", fFlags)); AssertMsgReturn(PDMDrvHlpNoAttach(pDrvIns) == VERR_PDM_NO_ATTACHED_DRIVER, ("Configuration error: Not possible to attach anything to this driver!\n"), VERR_PDM_DRVINS_NO_ATTACH); /* * Init the static parts. */ pThis->pDrvIns = pDrvIns; /* IBase */ pDrvIns->IBase.pfnQueryInterface = drvAudioVideoRecQueryInterface; /* IHostAudio */ pThis->IHostAudio.pfnGetConfig = drvAudioVideoRecHA_GetConfig; pThis->IHostAudio.pfnGetDevices = NULL; pThis->IHostAudio.pfnSetDevice = NULL; pThis->IHostAudio.pfnGetStatus = drvAudioVideoRecHA_GetStatus; pThis->IHostAudio.pfnDoOnWorkerThread = NULL; pThis->IHostAudio.pfnStreamConfigHint = NULL; pThis->IHostAudio.pfnStreamCreate = drvAudioVideoRecHA_StreamCreate; pThis->IHostAudio.pfnStreamInitAsync = NULL; pThis->IHostAudio.pfnStreamDestroy = drvAudioVideoRecHA_StreamDestroy; pThis->IHostAudio.pfnStreamNotifyDeviceChanged = NULL; pThis->IHostAudio.pfnStreamEnable = drvAudioVideoRecHA_StreamEnable; pThis->IHostAudio.pfnStreamDisable = drvAudioVideoRecHA_StreamDisable; pThis->IHostAudio.pfnStreamPause = drvAudioVideoRecHA_StreamPause; pThis->IHostAudio.pfnStreamResume = drvAudioVideoRecHA_StreamResume; pThis->IHostAudio.pfnStreamDrain = drvAudioVideoRecHA_StreamDrain; pThis->IHostAudio.pfnStreamGetState = drvAudioVideoRecHA_StreamGetState; pThis->IHostAudio.pfnStreamGetPending = NULL; pThis->IHostAudio.pfnStreamGetWritable = drvAudioVideoRecHA_StreamGetWritable; pThis->IHostAudio.pfnStreamPlay = drvAudioVideoRecHA_StreamPlay; pThis->IHostAudio.pfnStreamGetReadable = drvAudioVideoRecHA_StreamGetReadable; pThis->IHostAudio.pfnStreamCapture = drvAudioVideoRecHA_StreamCapture; /* * Read configuration. */ PCPDMDRVHLPR3 const pHlp = pDrvIns->pHlpR3; /** @todo validate it. */ /* * Get the Console object pointer. */ com::Guid ConsoleUuid(COM_IIDOF(IConsole)); IConsole *pIConsole = (IConsole *)PDMDrvHlpQueryGenericUserObject(pDrvIns, ConsoleUuid.raw()); AssertLogRelReturn(pIConsole, VERR_INTERNAL_ERROR_3); Console *pConsole = static_cast(pIConsole); AssertLogRelReturn(pConsole, VERR_INTERNAL_ERROR_3); pThis->pConsole = pConsole; AssertReturn(!pThis->pConsole.isNull(), VERR_INVALID_POINTER); pThis->pAudioVideoRec = pConsole->i_recordingGetAudioDrv(); AssertPtrReturn(pThis->pAudioVideoRec, VERR_INVALID_POINTER); pThis->pAudioVideoRec->mpDrv = pThis; /* * Get the recording container parameters from the audio driver instance. */ RT_ZERO(pThis->ContainerParms); PAVRECCONTAINERPARMS pConParams = &pThis->ContainerParms; int vrc = pHlp->pfnCFGMQueryU32(pCfg, "StreamIndex", (uint32_t *)&pConParams->idxStream); AssertRCReturn(vrc, vrc); vrc = pHlp->pfnCFGMQueryU32(pCfg, "ContainerType", (uint32_t *)&pConParams->enmType); AssertRCReturn(vrc, vrc); switch (pConParams->enmType) { case AVRECCONTAINERTYPE_WEBM: vrc = pHlp->pfnCFGMQueryStringAlloc(pCfg, "ContainerFileName", &pConParams->WebM.pszFile); AssertRCReturn(vrc, vrc); break; default: break; } /* * Obtain the recording context. */ pThis->pRecCtx = pConsole->i_recordingGetContext(); AssertPtrReturn(pThis->pRecCtx, VERR_INVALID_POINTER); /* * Get the codec configuration. */ RecordingStream *pStream = pThis->pRecCtx->GetStream(pConParams->idxStream); AssertPtrReturn(pStream, VERR_INVALID_POINTER); /* * Init the recording sink. */ vrc = avRecSinkInit(pThis, &pThis->Sink, &pThis->ContainerParms, pStream); if (RT_SUCCESS(vrc)) LogRel2(("Recording: Audio recording driver initialized\n")); else LogRel(("Recording: Audio recording driver initialization failed: %Rrc\n", vrc)); return vrc; } /** * Video recording audio driver registration record. */ const PDMDRVREG AudioVideoRec::DrvReg = { PDM_DRVREG_VERSION, /* szName */ "AudioVideoRec", /* szRCMod */ "", /* szR0Mod */ "", /* pszDescription */ "Audio driver for video recording", /* fFlags */ PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT, /* fClass. */ PDM_DRVREG_CLASS_AUDIO, /* cMaxInstances */ ~0U, /* cbInstance */ sizeof(DRVAUDIORECORDING), /* pfnConstruct */ AudioVideoRec::drvConstruct, /* pfnDestruct */ AudioVideoRec::drvDestruct, /* pfnRelocate */ NULL, /* pfnIOCtl */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ NULL, /* pfnSuspend */ NULL, /* pfnResume */ NULL, /* pfnAttach */ NULL, /* pfnDetach */ NULL, /* pfnPowerOff */ AudioVideoRec::drvPowerOff, /* pfnSoftReset */ NULL, /* u32EndVersion */ PDM_DRVREG_VERSION };