/* $Id: AudioMixer.cpp 63736 2016-09-06 08:35:27Z vboxsync $ */ /** @file * VBox audio: Mixing routines, mainly used by the various audio device * emulations to achieve proper multiplexing from/to attached * devices LUNs. * * This mixer acts as a layer between the audio connector interface and * the actual device emulation, providing mechanisms for audio sources (input) and * audio sinks (output). * * As audio driver instances are handled as LUNs on the device level, this * audio mixer then can take care of e.g. mixing various inputs/outputs to/from * a specific source/sink. * * How and which audio streams are connected to sinks/sources depends on how * the audio mixer has been set up. * * A sink can connect multiple output streams together, whereas a source * does this with input streams. Each sink / source consists of one or more * so-called mixer streams, which then in turn have pointers to the actual * PDM audio input/output streams. */ /* * Copyright (C) 2014-2016 Oracle Corporation * * This file is part of VirtualBox Open Source Edition (OSE), as * available from http://www.virtualbox.org. This file is free software; * you can redistribute it and/or modify it under the terms of the GNU * General Public License (GPL) as published by the Free Software * Foundation, in version 2 as it comes in the "COPYING" file of the * VirtualBox OSE distribution. VirtualBox OSE is distributed in the * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. */ #define LOG_GROUP LOG_GROUP_AUDIO_MIXER #include #include "AudioMixer.h" #include "AudioMixBuffer.h" #include "DrvAudio.h" #include #include #include #include #include #include #include #include static int audioMixerRemoveSinkInternal(PAUDIOMIXER pMixer, PAUDMIXSINK pSink); static void audioMixerSinkDestroyInternal(PAUDMIXSINK pSink); static int audioMixerSinkUpdateVolume(PAUDMIXSINK pSink, const PPDMAUDIOVOLUME pVolMaster); static void audioMixerSinkRemoveAllStreamsInternal(PAUDMIXSINK pSink); static int audioMixerSinkRemoveStreamInternal(PAUDMIXSINK pSink, PAUDMIXSTREAM pStream); static void audioMixerSinkReset(PAUDMIXSINK pSink); static int audioMixerSinkUpdateInternal(PAUDMIXSINK pSink); static void audioMixerStreamDestroyInternal(PAUDMIXSTREAM pStream); /** * Creates an audio sink and attaches it to the given mixer. * * @returns IPRT status code. * @param pMixer Mixer to attach created sink to. * @param pszName Name of the sink to create. * @param enmDir Direction of the sink to create. * @param ppSink Pointer which returns the created sink on success. */ int AudioMixerCreateSink(PAUDIOMIXER pMixer, const char *pszName, AUDMIXSINKDIR enmDir, PAUDMIXSINK *ppSink) { AssertPtrReturn(pMixer, VERR_INVALID_POINTER); AssertPtrReturn(pszName, VERR_INVALID_POINTER); /* ppSink is optional. */ int rc = RTCritSectEnter(&pMixer->CritSect); if (RT_FAILURE(rc)) return rc; PAUDMIXSINK pSink = (PAUDMIXSINK)RTMemAllocZ(sizeof(AUDMIXSINK)); if (pSink) { pSink->pszName = RTStrDup(pszName); if (!pSink->pszName) rc = VERR_NO_MEMORY; if (RT_SUCCESS(rc)) rc = RTCritSectInit(&pSink->CritSect); if (RT_SUCCESS(rc)) { pSink->pParent = pMixer; pSink->enmDir = enmDir; RTListInit(&pSink->lstStreams); /* Set initial volume to max. */ pSink->Volume.fMuted = false; pSink->Volume.uLeft = PDMAUDIO_VOLUME_MAX; pSink->Volume.uRight = PDMAUDIO_VOLUME_MAX; /* Ditto for the combined volume. */ pSink->VolumeCombined.fMuted = false; pSink->VolumeCombined.uLeft = PDMAUDIO_VOLUME_MAX; pSink->VolumeCombined.uRight = PDMAUDIO_VOLUME_MAX; RTListAppend(&pMixer->lstSinks, &pSink->Node); pMixer->cSinks++; LogFlowFunc(("pMixer=%p, pSink=%p, cSinks=%RU8\n", pMixer, pSink, pMixer->cSinks)); if (ppSink) *ppSink = pSink; } if (RT_FAILURE(rc)) { RTCritSectDelete(&pSink->CritSect); if (pSink) { RTMemFree(pSink); pSink = NULL; } } } else rc = VERR_NO_MEMORY; int rc2 = RTCritSectLeave(&pMixer->CritSect); AssertRC(rc2); return rc; } /** * Creates an audio mixer. * * @returns IPRT status code. * @param pszName Name of the audio mixer. * @param fFlags Creation flags. Not used at the moment and must be 0. * @param ppMixer Pointer which returns the created mixer object. */ int AudioMixerCreate(const char *pszName, uint32_t fFlags, PAUDIOMIXER *ppMixer) { RT_NOREF(fFlags); AssertPtrReturn(pszName, VERR_INVALID_POINTER); /** @todo Add fFlags validation. */ AssertPtrReturn(ppMixer, VERR_INVALID_POINTER); int rc = VINF_SUCCESS; PAUDIOMIXER pMixer = (PAUDIOMIXER)RTMemAllocZ(sizeof(AUDIOMIXER)); if (pMixer) { pMixer->pszName = RTStrDup(pszName); if (!pMixer->pszName) rc = VERR_NO_MEMORY; if (RT_SUCCESS(rc)) rc = RTCritSectInit(&pMixer->CritSect); if (RT_SUCCESS(rc)) { pMixer->cSinks = 0; RTListInit(&pMixer->lstSinks); /* Set master volume to the max. */ pMixer->VolMaster.fMuted = false; pMixer->VolMaster.uLeft = PDMAUDIO_VOLUME_MAX; pMixer->VolMaster.uRight = PDMAUDIO_VOLUME_MAX; LogFlowFunc(("Created mixer '%s'\n", pMixer->pszName)); *ppMixer = pMixer; } else RTMemFree(pMixer); } else rc = VERR_NO_MEMORY; LogFlowFuncLeaveRC(rc); return rc; } #ifdef DEBUG /** * Helper function for the internal debugger to print the mixer's current * state, along with the attached sinks. * * @param pMixer Mixer to print debug output for. * @param pHlp Debug info helper to use. * @param pszArgs Optional arguments. Not being used at the moment. */ void AudioMixerDebug(PAUDIOMIXER pMixer, PCDBGFINFOHLP pHlp, const char *pszArgs) { RT_NOREF(pszArgs); PAUDMIXSINK pSink; unsigned iSink = 0; int rc2 = RTCritSectEnter(&pMixer->CritSect); if (RT_FAILURE(rc2)) return; pHlp->pfnPrintf(pHlp, "[Master] %s: lVol=%u, rVol=%u, fMuted=%RTbool\n", pMixer->pszName, pMixer->VolMaster.uLeft, pMixer->VolMaster.uRight, pMixer->VolMaster.fMuted); RTListForEach(&pMixer->lstSinks, pSink, AUDMIXSINK, Node) { pHlp->pfnPrintf(pHlp, "[Sink %u] %s: lVol=%u, rVol=%u, fMuted=%RTbool\n", iSink, pSink->pszName, pSink->Volume.uLeft, pSink->Volume.uRight, pSink->Volume.fMuted); ++iSink; } rc2 = RTCritSectLeave(&pMixer->CritSect); AssertRC(rc2); } #endif /** * Destroys an audio mixer. * * @param pMixer Audio mixer to destroy. */ void AudioMixerDestroy(PAUDIOMIXER pMixer) { if (!pMixer) return; int rc2 = RTCritSectEnter(&pMixer->CritSect); AssertRC(rc2); LogFlowFunc(("Destroying %s ...\n", pMixer->pszName)); PAUDMIXSINK pSink, pSinkNext; RTListForEachSafe(&pMixer->lstSinks, pSink, pSinkNext, AUDMIXSINK, Node) { /* Save a pointer to the sink to remove, as pSink * will not be valid anymore after calling audioMixerRemoveSinkInternal(). */ PAUDMIXSINK pSinkToRemove = pSink; audioMixerRemoveSinkInternal(pMixer, pSinkToRemove); audioMixerSinkDestroyInternal(pSinkToRemove); } pMixer->cSinks = 0; if (pMixer->pszName) { RTStrFree(pMixer->pszName); pMixer->pszName = NULL; } rc2 = RTCritSectLeave(&pMixer->CritSect); AssertRC(rc2); RTCritSectDelete(&pMixer->CritSect); RTMemFree(pMixer); pMixer = NULL; } /** * Invalidates all internal data, internal version. * * @returns IPRT status code. * @param pMixer Mixer to invalidate data for. */ int audioMixerInvalidateInternal(PAUDIOMIXER pMixer) { AssertPtrReturn(pMixer, VERR_INVALID_POINTER); LogFlowFunc(("[%s]\n", pMixer->pszName)); /* Propagate new master volume to all connected sinks. */ PAUDMIXSINK pSink; RTListForEach(&pMixer->lstSinks, pSink, AUDMIXSINK, Node) { int rc2 = audioMixerSinkUpdateVolume(pSink, &pMixer->VolMaster); AssertRC(rc2); } return VINF_SUCCESS; } /** * Invalidates all internal data. * * @returns IPRT status code. * @param pMixer Mixer to invalidate data for. */ void AudioMixerInvalidate(PAUDIOMIXER pMixer) { AssertPtrReturnVoid(pMixer); int rc2 = RTCritSectEnter(&pMixer->CritSect); AssertRC(rc2); LogFlowFunc(("[%s]\n", pMixer->pszName)); rc2 = audioMixerInvalidateInternal(pMixer); AssertRC(rc2); rc2 = RTCritSectLeave(&pMixer->CritSect); AssertRC(rc2); } /** * Removes a formerly attached audio sink for an audio mixer, internal version. * * @returns IPRT status code. * @param pMixer Mixer to remove sink from. * @param pSink Sink to remove. */ static int audioMixerRemoveSinkInternal(PAUDIOMIXER pMixer, PAUDMIXSINK pSink) { AssertPtrReturn(pMixer, VERR_INVALID_POINTER); if (!pSink) return VERR_NOT_FOUND; AssertMsgReturn(pSink->pParent == pMixer, ("Sink '%s' is not part of mixer '%s'\n", pSink->pszName, pMixer->pszName), VERR_NOT_FOUND); LogFlowFunc(("[%s]: pSink=%s, cSinks=%RU8\n", pMixer->pszName, pSink->pszName, pMixer->cSinks)); /* Remove sink from mixer. */ RTListNodeRemove(&pSink->Node); Assert(pMixer->cSinks); pMixer->cSinks--; /* Set mixer to NULL so that we know we're not part of any mixer anymore. */ pSink->pParent = NULL; return VINF_SUCCESS; } /** * Removes a formerly attached audio sink for an audio mixer. * * @returns IPRT status code. * @param pMixer Mixer to remove sink from. * @param pSink Sink to remove. */ void AudioMixerRemoveSink(PAUDIOMIXER pMixer, PAUDMIXSINK pSink) { int rc2 = RTCritSectEnter(&pMixer->CritSect); AssertRC(rc2); audioMixerSinkRemoveAllStreamsInternal(pSink); audioMixerRemoveSinkInternal(pMixer, pSink); rc2 = RTCritSectLeave(&pMixer->CritSect); } /** * Sets the mixer's master volume. * * @returns IPRT status code. * @param pMixer Mixer to set master volume for. * @param pVol Volume to set. */ int AudioMixerSetMasterVolume(PAUDIOMIXER pMixer, PPDMAUDIOVOLUME pVol) { AssertPtrReturn(pMixer, VERR_INVALID_POINTER); AssertPtrReturn(pVol, VERR_INVALID_POINTER); int rc = RTCritSectEnter(&pMixer->CritSect); if (RT_FAILURE(rc)) return rc; memcpy(&pMixer->VolMaster, pVol, sizeof(PDMAUDIOVOLUME)); LogFlowFunc(("[%s]: lVol=%RU32, rVol=%RU32 => fMuted=%RTbool, lVol=%RU32, rVol=%RU32\n", pMixer->pszName, pVol->uLeft, pVol->uRight, pMixer->VolMaster.fMuted, pMixer->VolMaster.uLeft, pMixer->VolMaster.uRight)); rc = audioMixerInvalidateInternal(pMixer); int rc2 = RTCritSectLeave(&pMixer->CritSect); AssertRC(rc2); return rc; } /********************************************************************************************************************************* * Mixer Sink implementation. ********************************************************************************************************************************/ /** * Adds an audio stream to a specific audio sink. * * @returns IPRT status code. * @param pSink Sink to add audio stream to. * @param pStream Stream to add. */ int AudioMixerSinkAddStream(PAUDMIXSINK pSink, PAUDMIXSTREAM pStream) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; if (pSink->cStreams == UINT8_MAX) /* 255 streams per sink max. */ { int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return VERR_NO_MORE_HANDLES; } LogFlowFuncEnter(); #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF /* Make sure only compatible streams are added. */ if (pStream->enmDir == PDMAUDIODIR_IN) { if (DrvAudioHlpPCMPropsAreEqual(&pSink->PCMProps, &pStream->InOut.pIn->Props)) { #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF /* Chain: Stream (Child) -> Sink (Child) -> Guest (Parent). */ PPDMAUDIOMIXBUF pHstIn = &pStream->InOut.pIn->pHstStrmIn->MixBuf; PPDMAUDIOMIXBUF pGstIn = &pStream->InOut.pIn->MixBuf; /* Unlink any former parent from host input. */ AudioMixBufUnlink(pHstIn); /* Link host input to this sink as a parent. */ rc = AudioMixBufLinkTo(pHstIn, &pSink->MixBuf); AssertRC(rc); /* Unlink any former parent from this sink. */ AudioMixBufUnlink(&pSink->MixBuf); /* Link guest input to this sink as a parent. */ rc = AudioMixBufLinkTo(&pSink->MixBuf, pGstIn); AssertRC(rc); # ifdef DEBUG AudioMixBufDbgPrintChain(&pStream->InOut.pIn->MixBuf); # endif #endif /* VBOX_AUDIO_MIXER_WITH_MIXBUF */ } else AssertFailedStmt(rc = VERR_WRONG_TYPE); } else if (pStream->enmDir == PDMAUDIODIR_OUT) { if (DrvAudioHlpPCMPropsAreEqual(&pSink->PCMProps, &pStream->InOut.pOut->Props)) { #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF /* Chain: Guest (Child) -> Sink (Child) -> Stream (Parent). */ rc = AudioMixBufLinkTo(&pStream->InOut.pOut->pHstStrmOut->MixBuf, &pSink->MixBuf); # ifdef DEBUG AudioMixBufDbgPrintChain(&pSink->MixBuf); # endif #endif /* VBOX_AUDIO_MIXER_WITH_MIXBUF */ } else AssertFailedStmt(rc = VERR_WRONG_TYPE); } else AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED); #else rc = VINF_SUCCESS; #endif if (RT_SUCCESS(rc)) { /** @todo Check if stream already is assigned to (another) sink. */ /* Apply the sink's combined volume to the stream. */ AssertPtr(pStream->pConn); rc = pStream->pConn->pfnStreamSetVolume(pStream->pConn, pStream->pStream, &pSink->VolumeCombined); /* Save pointer to sink the stream is attached to. */ pStream->pSink = pSink; /* Append stream to sink's list. */ RTListAppend(&pSink->lstStreams, &pStream->Node); pSink->cStreams++; } LogFlowFunc(("[%s]: cStreams=%RU8, rc=%Rrc\n", pSink->pszName, pSink->cStreams, rc)); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /** * Creates an audio mixer stream. * * @returns IPRT status code. * @param pSink Sink to use for creating the stream. * @param pConn Audio connector interface to use. * @param pCfg Audio stream configuration to use. * @param fFlags Stream creation flags. Currently unused, set to 0. * @param ppStream Pointer which receives the the newly created audio stream. */ int AudioMixerSinkCreateStream(PAUDMIXSINK pSink, PPDMIAUDIOCONNECTOR pConn, PPDMAUDIOSTREAMCFG pCfg, uint32_t fFlags, PAUDMIXSTREAM *ppStream) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pConn, VERR_INVALID_POINTER); AssertPtrReturn(pCfg, VERR_INVALID_POINTER); /** @todo Validate fFlags. */ /* ppStream is optional. */ PAUDMIXSTREAM pMixStream = (PAUDMIXSTREAM)RTMemAllocZ(sizeof(AUDMIXSTREAM)); if (!pMixStream) return VERR_NO_MEMORY; pMixStream->pszName = RTStrDup(pCfg->szName); if (!pMixStream->pszName) { RTMemFree(pMixStream); return VERR_NO_MEMORY; } int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; LogFlowFunc(("[%s]: fFlags=0x%x (enmDir=%d, %s, %RU8 channels, %RU32Hz)\n", pSink->pszName, fFlags, pCfg->enmDir, DrvAudioHlpAudFmtToStr(pCfg->enmFormat), pCfg->cChannels, pCfg->uHz)); /* * Initialize the host-side configuration for the stream to be created. * Always use the sink's PCM audio format as the host side when creating a stream for it. */ PDMAUDIOSTREAMCFG CfgHost; rc = DrvAudioHlpPCMPropsToStreamCfg(&pSink->PCMProps, &CfgHost); AssertRCReturn(rc, rc); /* Apply the sink's direction for the configuration to use to * create the stream. */ if (pSink->enmDir == AUDMIXSINKDIR_INPUT) { CfgHost.DestSource.Source = pCfg->DestSource.Source; CfgHost.enmDir = PDMAUDIODIR_IN; } else { CfgHost.DestSource.Dest = pCfg->DestSource.Dest; CfgHost.enmDir = PDMAUDIODIR_OUT; } RTStrPrintf(CfgHost.szName, sizeof(CfgHost.szName), "%s", pCfg->szName); rc = RTCritSectInit(&pMixStream->CritSect); if (RT_SUCCESS(rc)) { PPDMAUDIOSTREAM pStream; rc = pConn->pfnStreamCreate(pConn, &CfgHost, pCfg, &pStream); if (RT_SUCCESS(rc)) { /* Save the audio stream pointer to this mixing stream. */ pMixStream->pStream = pStream; /* Increase the stream's reference count to let others know * we're reyling on it to be around now. */ pConn->pfnStreamRetain(pConn, pStream); } } if (RT_SUCCESS(rc)) { pMixStream->fFlags = fFlags; pMixStream->pConn = pConn; if (ppStream) *ppStream = pMixStream; } else if (pMixStream) { int rc2 = RTCritSectDelete(&pMixStream->CritSect); AssertRC(rc2); if (pMixStream->pszName) { RTStrFree(pMixStream->pszName); pMixStream->pszName = NULL; } RTMemFree(pMixStream); pMixStream = NULL; } int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /** * Static helper function to translate a sink command * to a PDM audio stream command. * * @returns PDM audio stream command, or PDMAUDIOSTREAMCMD_UNKNOWN if not found. * @param enmCmd Mixer sink command to translate. */ static PDMAUDIOSTREAMCMD audioMixerSinkToStreamCmd(AUDMIXSINKCMD enmCmd) { switch (enmCmd) { case AUDMIXSINKCMD_ENABLE: return PDMAUDIOSTREAMCMD_ENABLE; case AUDMIXSINKCMD_DISABLE: return PDMAUDIOSTREAMCMD_DISABLE; case AUDMIXSINKCMD_PAUSE: return PDMAUDIOSTREAMCMD_PAUSE; case AUDMIXSINKCMD_RESUME: return PDMAUDIOSTREAMCMD_RESUME; default: break; } AssertMsgFailed(("Unsupported sink command %d\n", enmCmd)); return PDMAUDIOSTREAMCMD_UNKNOWN; } /** * Controls a mixer sink. * * @returns IPRT status code. * @param pSink Mixer sink to control. * @param enmSinkCmd Sink command to set. */ int AudioMixerSinkCtl(PAUDMIXSINK pSink, AUDMIXSINKCMD enmSinkCmd) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); PDMAUDIOSTREAMCMD enmCmdStream = audioMixerSinkToStreamCmd(enmSinkCmd); if (enmCmdStream == PDMAUDIOSTREAMCMD_UNKNOWN) return VERR_NOT_SUPPORTED; int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; PAUDMIXSTREAM pStream; RTListForEach(&pSink->lstStreams, pStream, AUDMIXSTREAM, Node) { int rc2 = AudioMixerStreamCtl(pStream, enmCmdStream, AUDMIXSTRMCTL_FLAG_NONE); if (RT_SUCCESS(rc)) rc = rc2; /* Keep going. Flag? */ } if (enmSinkCmd == AUDMIXSINKCMD_ENABLE) { pSink->fStatus |= AUDMIXSINK_STS_RUNNING; } else if (enmSinkCmd == AUDMIXSINKCMD_DISABLE) { /* Set the sink in a pending disable state first. * The final status (disabled) will be set in the sink's iteration. */ pSink->fStatus |= AUDMIXSINK_STS_PENDING_DISABLE; } /* Not running anymore? Reset. */ if (!(pSink->fStatus & AUDMIXSINK_STS_RUNNING)) audioMixerSinkReset(pSink); LogFlowFunc(("[%s]: enmCmd=%d, fStatus=0x%x, rc=%Rrc\n", pSink->pszName, enmSinkCmd, pSink->fStatus, rc)); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /** * Destroys a mixer sink and removes it from the attached mixer (if any). * * @param pSink Mixer sink to destroy. */ void AudioMixerSinkDestroy(PAUDMIXSINK pSink) { if (!pSink) return; int rc2 = RTCritSectEnter(&pSink->CritSect); AssertRC(rc2); if (pSink->pParent) { /* Save sink pointer, as after audioMixerRemoveSinkInternal() the * pointer will be gone from the stream. */ PAUDIOMIXER pMixer = pSink->pParent; audioMixerRemoveSinkInternal(pMixer, pSink); Assert(pMixer->cSinks); pMixer->cSinks--; } rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); audioMixerSinkDestroyInternal(pSink); } /** * Destroys a mixer sink. * * @param pSink Mixer sink to destroy. */ static void audioMixerSinkDestroyInternal(PAUDMIXSINK pSink) { AssertPtrReturnVoid(pSink); LogFunc(("%s\n", pSink->pszName)); PAUDMIXSTREAM pStream, pStreamNext; RTListForEachSafe(&pSink->lstStreams, pStream, pStreamNext, AUDMIXSTREAM, Node) { /* Save a pointer to the stream to remove, as pStream * will not be valid anymore after calling audioMixerSinkRemoveStreamInternal(). */ PAUDMIXSTREAM pStreamToRemove = pStream; audioMixerSinkRemoveStreamInternal(pSink, pStreamToRemove); audioMixerStreamDestroyInternal(pStreamToRemove); } if (pSink->pszName) { RTStrFree(pSink->pszName); pSink->pszName = NULL; } RTMemFree(pSink); pSink = NULL; } /** * Returns the amount of bytes ready to be read from a sink since the last call * to AudioMixerSinkUpdate(). * * @returns Amount of bytes ready to be read from the sink. * @param pSink Sink to return number of available samples for. */ uint32_t AudioMixerSinkGetReadable(PAUDMIXSINK pSink) { AssertPtrReturn(pSink, 0); AssertMsg(pSink->enmDir == AUDMIXSINKDIR_INPUT, ("Can't read from a non-input sink\n")); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return 0; uint32_t cbReadable; #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF # error "Implement me!" #else cbReadable = pSink->In.cbReadable; #endif Log3Func(("[%s] cbReadable=%RU32\n", pSink->pszName, cbReadable)); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return cbReadable; } /** * Returns the amount of bytes ready to be written to a sink since the last call * to AudioMixerSinkUpdate(). * * @returns Amount of bytes ready to be written to the sink. * @param pSink Sink to return number of available samples for. */ uint32_t AudioMixerSinkGetWritable(PAUDMIXSINK pSink) { AssertPtrReturn(pSink, 0); AssertMsg(pSink->enmDir == AUDMIXSINKDIR_OUTPUT, ("Can't write to a non-output sink\n")); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return 0; uint32_t cbWritable; #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF # error "Implement me!" #else cbWritable = pSink->Out.cbWritable; #endif Log3Func(("[%s] cbWritable=%RU32\n", pSink->pszName, cbWritable)); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return cbWritable; } /** * Returns the sink's mixing direction. * * @returns Mixing direction. * @param pSink Sink to return direction for. */ AUDMIXSINKDIR AudioMixerSinkGetDir(PAUDMIXSINK pSink) { AssertPtrReturn(pSink, AUDMIXSINKDIR_UNKNOWN); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return AUDMIXSINKDIR_UNKNOWN; AUDMIXSINKDIR enmDir = pSink->enmDir; int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return enmDir; } /** * Returns a specific mixer stream from a sink, based on its index. * * @returns Mixer stream if found, or NULL if not found. * @param pSink Sink to retrieve mixer stream from. * @param uIndex Index of the mixer stream to return. */ PAUDMIXSTREAM AudioMixerSinkGetStream(PAUDMIXSINK pSink, uint8_t uIndex) { AssertPtrReturn(pSink, NULL); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return NULL; AssertMsgReturn(uIndex < pSink->cStreams, ("Index %RU8 exceeds stream count (%RU8)", uIndex, pSink->cStreams), NULL); /* Slow lookup, d'oh. */ PAUDMIXSTREAM pStream = RTListGetFirst(&pSink->lstStreams, AUDMIXSTREAM, Node); while (uIndex) { pStream = RTListGetNext(&pSink->lstStreams, pStream, AUDMIXSTREAM, Node); uIndex--; } /** @todo Do we need to raise the stream's reference count here? */ int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); AssertPtr(pStream); return pStream; } /** * Returns the current status of a mixer sink. * * @returns The sink's current status. * @param pSink Mixer sink to return status for. */ AUDMIXSINKSTS AudioMixerSinkGetStatus(PAUDMIXSINK pSink) { if (!pSink) return AUDMIXSINK_STS_NONE; int rc2 = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc2)) return AUDMIXSINK_STS_NONE; LogFlowFunc(("[%s]: fStatus=0x%x\n", pSink->pszName, pSink->fStatus)); /* If the dirty flag is set, there is unprocessed data in the sink. */ AUDMIXSINKSTS stsSink = pSink->fStatus; rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return stsSink; } /** * Returns the number of attached mixer streams to a mixer sink. * * @returns The number of attached mixer streams. * @param pSink Mixer sink to return number for. */ uint8_t AudioMixerSinkGetStreamCount(PAUDMIXSINK pSink) { if (!pSink) return 0; int rc2 = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc2)) return 0; uint8_t cStreams = pSink->cStreams; rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return cStreams; } /** * Reads audio data from a mixer sink. * * @returns IPRT status code. * @param pSink Mixer sink to read data from. * @param enmOp Mixer operation to use for reading the data. * @param pvBuf Buffer where to store the read data. * @param cbBuf Buffer size (in bytes) where to store the data. * @param pcbRead Number of bytes read. Optional. */ int AudioMixerSinkRead(PAUDMIXSINK pSink, AUDMIXOP enmOp, void *pvBuf, uint32_t cbBuf, uint32_t *pcbRead) { RT_NOREF(enmOp); AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pvBuf, VERR_INVALID_POINTER); AssertReturn(cbBuf, VERR_INVALID_PARAMETER); /* pcbRead is optional. */ /** @todo Handle mixing operation enmOp! */ int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; AssertMsg(pSink->enmDir == AUDMIXSINKDIR_INPUT, ("Can't read from a sink which is not an input sink\n")); #ifndef VBOX_AUDIO_MIXER_WITH_MIXBUF uint8_t *pvMixBuf = (uint8_t *)RTMemAlloc(cbBuf); if (!pvMixBuf) { int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return VERR_NO_MEMORY; } #endif uint32_t cbRead = 0; /* Flag indicating whether this sink is in a 'clean' state, * e.g. there is no more data to read from. */ bool fClean = true; PAUDMIXSTREAM pMixStream; RTListForEach(&pSink->lstStreams, pMixStream, AUDMIXSTREAM, Node) { if (!(pMixStream->pConn->pfnStreamGetStatus(pMixStream->pConn, pMixStream->pStream) & PDMAUDIOSTRMSTS_FLAG_ENABLED)) { Log3Func(("[%s] Stream '%s' disabled, skipping ...\n", pSink->pszName, pMixStream->pszName)); continue; } uint32_t cbTotalRead = 0; uint32_t cbToRead = cbBuf; int rc2 = VINF_SUCCESS; while (cbToRead) { uint32_t cbReadStrm; AssertPtr(pMixStream->pConn); #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF # error "Implement me!" #else rc2 = pMixStream->pConn->pfnStreamRead(pMixStream->pConn, pMixStream->pStream, (uint8_t *)pvMixBuf + cbTotalRead, cbToRead, &cbReadStrm); #endif if (RT_FAILURE(rc2)) Log3Func(("[%s] Failed reading from stream '%s': %Rrc\n", pSink->pszName, pMixStream->pszName, rc2)); if ( RT_FAILURE(rc2) || !cbReadStrm) break; /** @todo Right now we only handle one stream (the last one added in fact). */ AssertBreakStmt(cbReadStrm <= cbToRead, rc = VERR_BUFFER_OVERFLOW); cbToRead -= cbReadStrm; cbTotalRead += cbReadStrm; } if (RT_FAILURE(rc2)) continue; cbRead = RT_MAX(cbRead, cbTotalRead); PDMAUDIOSTRMSTS strmSts = pMixStream->pConn->pfnStreamGetStatus(pMixStream->pConn, pMixStream->pStream); fClean &= !(strmSts & PDMAUDIOSTRMSTS_FLAG_DATA_READABLE); } if (RT_SUCCESS(rc)) { if (fClean) pSink->fStatus &= ~AUDMIXSINK_STS_DIRTY; #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF # error "Implement me!" #else if (cbRead) memcpy(pvBuf, pvMixBuf, cbRead); #endif if (pcbRead) *pcbRead = cbRead; } #ifndef VBOX_AUDIO_MIXER_WITH_MIXBUF RTMemFree(pvMixBuf); #endif Log3Func(("[%s] cbRead=%RU32, fStatus=0x%x, rc=%Rrc\n", pSink->pszName, cbRead, pSink->fStatus, rc)); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /** * Removes a mixer stream from a mixer sink, internal version. * * @returns IPRT status code. * @param pSink Sink to remove mixer stream from. * @param pStream Stream to remove. */ static int audioMixerSinkRemoveStreamInternal(PAUDMIXSINK pSink, PAUDMIXSTREAM pStream) { AssertPtrReturn(pSink, VERR_INVALID_PARAMETER); if ( !pStream || !pStream->pSink) /* Not part of a sink anymore? */ { return VERR_NOT_FOUND; } AssertMsgReturn(pStream->pSink == pSink, ("Stream '%s' is not part of sink '%s'\n", pStream->pszName, pSink->pszName), VERR_NOT_FOUND); LogFlowFunc(("[%s]: (Stream = %s), cStreams=%RU8\n", pSink->pszName, pStream->pStream->szName, pSink->cStreams)); #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF /* Unlink mixing buffer. */ AudioMixBufUnlink(&pStream->pStream->MixBuf); #endif /* Remove stream from sink. */ RTListNodeRemove(&pStream->Node); /* Set sink to NULL so that we know we're not part of any sink anymore. */ pStream->pSink = NULL; return VINF_SUCCESS; } /** * Removes a mixer stream from a mixer sink. * * @param pSink Sink to remove mixer stream from. * @param pStream Stream to remove. */ void AudioMixerSinkRemoveStream(PAUDMIXSINK pSink, PAUDMIXSTREAM pStream) { int rc2 = RTCritSectEnter(&pSink->CritSect); AssertRC(rc2); rc2 = audioMixerSinkRemoveStreamInternal(pSink, pStream); if (RT_SUCCESS(rc2)) { Assert(pSink->cStreams); pSink->cStreams--; } rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); } /** * Removes all attached streams from a given sink. * * @param pSink Sink to remove attached streams from. */ static void audioMixerSinkRemoveAllStreamsInternal(PAUDMIXSINK pSink) { if (!pSink) return; LogFunc(("%s\n", pSink->pszName)); PAUDMIXSTREAM pStream, pStreamNext; RTListForEachSafe(&pSink->lstStreams, pStream, pStreamNext, AUDMIXSTREAM, Node) audioMixerSinkRemoveStreamInternal(pSink, pStream); } /** * Resets the sink's state. * * @param pSink Sink to reset. */ static void audioMixerSinkReset(PAUDMIXSINK pSink) { if (!pSink) return; LogFunc(("%s\n", pSink->pszName)); if (pSink->enmDir == AUDMIXSINKDIR_INPUT) { #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF AudioMixBufReset(&pSink->MixBuf); #else pSink->In.cbReadable = 0; #endif } else if (pSink->enmDir == AUDMIXSINKDIR_OUTPUT) { #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF AudioMixBufReset(&pSink->MixBuf); #else pSink->Out.cbWritable = 0; #endif } /* Update last updated timestamp. */ pSink->tsLastUpdatedMS = RTTimeMilliTS(); /* Reset status. */ pSink->fStatus = AUDMIXSINK_STS_NONE; } /** * Removes all attached streams from a given sink. * * @param pSink Sink to remove attached streams from. */ void AudioMixerSinkRemoveAllStreams(PAUDMIXSINK pSink) { if (!pSink) return; int rc2 = RTCritSectEnter(&pSink->CritSect); AssertRC(rc2); audioMixerSinkRemoveAllStreamsInternal(pSink); pSink->cStreams = 0; rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); } /** * Sets the audio format of a mixer sink. * * @returns IPRT status code. * @param pSink Sink to set audio format for. * @param pPCMProps Audio format (PCM properties) to set. */ int AudioMixerSinkSetFormat(PAUDMIXSINK pSink, PPDMAUDIOPCMPROPS pPCMProps) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pPCMProps, VERR_INVALID_POINTER); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; if (DrvAudioHlpPCMPropsAreEqual(&pSink->PCMProps, pPCMProps)) /* Bail out early if PCM properties are equal. */ { rc = RTCritSectLeave(&pSink->CritSect); AssertRC(rc); return rc; } if (pSink->PCMProps.uHz) LogFlowFunc(("[%s]: Old format: %RU8 bit, %RU8 channels, %RU32Hz\n", pSink->pszName, pSink->PCMProps.cBits, pSink->PCMProps.cChannels, pSink->PCMProps.uHz)); memcpy(&pSink->PCMProps, pPCMProps, sizeof(PDMAUDIOPCMPROPS)); LogFlowFunc(("[%s]: New format %RU8 bit, %RU8 channels, %RU32Hz\n", pSink->pszName, pSink->PCMProps.cBits, pSink->PCMProps.cChannels, pSink->PCMProps.uHz)); #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF /* Also update the sink's mixing buffer format. */ AudioMixBufDestroy(&pSink->MixBuf); rc = AudioMixBufInit(&pSink->MixBuf, pSink->pszName, pPCMProps, _4K /** @todo Make configurable? */); if (RT_SUCCESS(rc)) { PAUDMIXSTREAM pStream; RTListForEach(&pSink->lstStreams, pStream, AUDMIXSTREAM, Node) { /** @todo Invalidate mix buffers! */ } } #endif /* VBOX_AUDIO_MIXER_WITH_MIXBUF */ int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); LogFlowFuncLeaveRC(rc); return rc; } /** * Set the volume of an individual sink. * * @returns IPRT status code. * @param pSink Sink to set volume for. * @param pVol Volume to set. */ int AudioMixerSinkSetVolume(PAUDMIXSINK pSink, PPDMAUDIOVOLUME pVol) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pVol, VERR_INVALID_POINTER); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; memcpy(&pSink->Volume, pVol, sizeof(PDMAUDIOVOLUME)); LogFlowFunc(("[%s]: fMuted=%RTbool, lVol=%RU32, rVol=%RU32\n", pSink->pszName, pSink->Volume.fMuted, pSink->Volume.uLeft, pSink->Volume.uRight)); AssertPtr(pSink->pParent); rc = audioMixerSinkUpdateVolume(pSink, &pSink->pParent->VolMaster); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /** * Updates a mixer sink, internal version. * * @returns IPRT status code. * @param pSink Mixer sink to update. */ static int audioMixerSinkUpdateInternal(PAUDMIXSINK pSink) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); int rc = VINF_SUCCESS; Log3Func(("[%s] fStatus=0x%x\n", pSink->pszName, pSink->fStatus)); /* Sink disabled? Take a shortcut. */ if (!(pSink->fStatus & AUDMIXSINK_STS_RUNNING)) return rc; /* Number of detected disabled streams of this sink. */ uint8_t cStreamsDisabled = 0; /* Get the time delta and calculate the bytes that need to be processed. */ uint64_t tsDeltaMS = RTTimeMilliTS() - pSink->tsLastUpdatedMS; uint32_t cbDelta = (pSink->PCMProps.cbBitrate / 1000 /* s to ms */) * tsDeltaMS; Log3Func(("[%s] Bitrate is %RU32 bytes/s -> %RU64ms / %RU32 bytes elapsed\n", pSink->pszName, pSink->PCMProps.cbBitrate, tsDeltaMS, cbDelta)); if (pSink->enmDir == AUDMIXSINKDIR_INPUT) { pSink->In.cbReadable = cbDelta; } else if (pSink->enmDir == AUDMIXSINKDIR_OUTPUT) { pSink->Out.cbWritable = cbDelta; } uint8_t uCurLUN = 0; PAUDMIXSTREAM pMixStream, pMixStreamNext; RTListForEachSafe(&pSink->lstStreams, pMixStream, pMixStreamNext, AUDMIXSTREAM, Node) { PPDMAUDIOSTREAM pStream = pMixStream->pStream; AssertPtr(pStream); PPDMIAUDIOCONNECTOR pConn = pMixStream->pConn; AssertPtr(pConn); uint32_t cCaptured = 0; int rc2 = pConn->pfnStreamIterate(pConn, pStream); if (RT_SUCCESS(rc2)) { if (pSink->enmDir == AUDMIXSINKDIR_INPUT) { rc = pConn->pfnStreamCapture(pConn, pStream, &cCaptured); if (RT_FAILURE(rc2)) { LogFlowFunc(("%s: Failed capturing stream '%s', rc=%Rrc\n", pSink->pszName, pStream->szName, rc2)); if (RT_SUCCESS(rc)) rc = rc2; continue; } if (cCaptured) pSink->fStatus |= AUDMIXSINK_STS_DIRTY; } else if (pSink->enmDir == AUDMIXSINKDIR_OUTPUT) { rc2 = pConn->pfnStreamPlay(pConn, pStream, NULL /* cPlayed */); if (RT_FAILURE(rc2)) { LogFlowFunc(("%s: Failed playing stream '%s', rc=%Rrc\n", pSink->pszName, pStream->szName, rc2)); if (RT_SUCCESS(rc)) rc = rc2; continue; } } else { AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED); continue; } rc2 = pConn->pfnStreamIterate(pConn, pStream); if (RT_FAILURE(rc2)) { LogFlowFunc(("%s: Failed re-iterating stream '%s', rc=%Rrc\n", pSink->pszName, pStream->szName, rc2)); if (RT_SUCCESS(rc)) rc = rc2; continue; } PDMAUDIOSTRMSTS strmSts = pConn->pfnStreamGetStatus(pConn, pStream); /* Is the stream not enabled and also is not in a pending disable state anymore? */ if ( !(strmSts & PDMAUDIOSTRMSTS_FLAG_ENABLED) && !(strmSts & PDMAUDIOSTRMSTS_FLAG_PENDING_DISABLE)) { cStreamsDisabled++; } if (pSink->enmDir == AUDMIXSINKDIR_INPUT) { #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF # error "Implement me!" #else if (uCurLUN == 0) { pSink->In.cbReadable = pConn->pfnStreamGetReadable(pConn, pStream); Log3Func(("\t%s: cbReadable=%RU32\n", pStream->szName, pSink->In.cbReadable)); uCurLUN++; } #endif } else if (pSink->enmDir == AUDMIXSINKDIR_OUTPUT) { #ifdef VBOX_AUDIO_MIXER_WITH_MIXBUF # error "Implement me!" #else if (uCurLUN == 0) { pSink->Out.cbWritable = pConn->pfnStreamGetWritable(pConn, pStream); Log3Func(("\t%s: cbWritable=%RU32\n", pStream->szName, pSink->Out.cbWritable)); uCurLUN++; } #endif } } Log3Func(("\t%s: cCaptured=%RU32\n", pStream->szName, cCaptured)); } /* All streams disabled and the sink is in pending disable mode? */ if ( cStreamsDisabled == pSink->cStreams && (pSink->fStatus & AUDMIXSINK_STS_PENDING_DISABLE)) { audioMixerSinkReset(pSink); } /* Update last updated timestamp. */ pSink->tsLastUpdatedMS = RTTimeMilliTS(); Log3Func(("[%s] cbReadable=%RU32, cbWritable=%RU32, rc=%Rrc\n", pSink->pszName, pSink->In.cbReadable, pSink->Out.cbWritable, rc)); return rc; } /** * Updates (invalidates) a mixer sink. * * @returns IPRT status code. * @param pSink Mixer sink to update. */ int AudioMixerSinkUpdate(PAUDMIXSINK pSink) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; /* * Note: Hz elapsed = cTicksElapsed / cTimerTicks * Bytes / second = Sample rate (Hz) * Audio channels * Bytes per sample */ // uint32_t cSamples = (int)((pSink->PCMProps.cChannels * cTicksElapsed * pSink->PCMProps.uHz + cTimerTicks) / cTimerTicks / pSink->PCMProps.cChannels); // LogFlowFunc(("[%s]: cTimerTicks=%RU64, cTicksElapsed=%RU64\n", pSink->pszName, cTimerTicks, cTicksElapsed)); // LogFlowFunc(("\t%zuHz elapsed, %RU32 samples (%RU32 bytes)\n", cTicksElapsed / cTimerTicks, cSamples, cSamples << 1)); rc = audioMixerSinkUpdateInternal(pSink); int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /** * Updates the (master) volume of a mixer sink. * * @returns IPRT status code. * @param pSink Mixer sink to update volume for. * @param pVolMaster Master volume to set. */ static int audioMixerSinkUpdateVolume(PAUDMIXSINK pSink, const PPDMAUDIOVOLUME pVolMaster) { AssertPtrReturn(pSink, VERR_INVALID_POINTER); AssertPtrReturn(pVolMaster, VERR_INVALID_POINTER); LogFlowFunc(("[%s] Master fMuted=%RTbool, lVol=%RU32, rVol=%RU32\n", pSink->pszName, pVolMaster->fMuted, pVolMaster->uLeft, pVolMaster->uRight)); LogFlowFunc(("[%s] fMuted=%RTbool, lVol=%RU32, rVol=%RU32 ", pSink->pszName, pSink->Volume.fMuted, pSink->Volume.uLeft, pSink->Volume.uRight)); /** @todo Very crude implementation for now -- needs more work! */ pSink->VolumeCombined.fMuted = pVolMaster->fMuted || pSink->Volume.fMuted; pSink->VolumeCombined.uLeft = ( (pSink->Volume.uLeft ? pSink->Volume.uLeft : 1) * (pVolMaster->uLeft ? pVolMaster->uLeft : 1)) / PDMAUDIO_VOLUME_MAX; pSink->VolumeCombined.uRight = ( (pSink->Volume.uRight ? pSink->Volume.uRight : 1) * (pVolMaster->uRight ? pVolMaster->uRight : 1)) / PDMAUDIO_VOLUME_MAX; LogFlow(("-> fMuted=%RTbool, lVol=%RU32, rVol=%RU32\n", pSink->VolumeCombined.fMuted, pSink->VolumeCombined.uLeft, pSink->VolumeCombined.uRight)); /* Propagate new sink volume to all streams in the sink. */ PAUDMIXSTREAM pMixStream; RTListForEach(&pSink->lstStreams, pMixStream, AUDMIXSTREAM, Node) { int rc2 = pMixStream->pConn->pfnStreamSetVolume(pMixStream->pConn, pMixStream->pStream, &pSink->VolumeCombined); AssertRC(rc2); } return VINF_SUCCESS; } /** * Writes data to a mixer sink. * * @returns IPRT status code. * @param pSink Sink to write data to. * @param enmOp Mixer operation to use when writing data to the sink. * @param pvBuf Buffer containing the audio data to write. * @param cbBuf Size (in bytes) of the buffer containing the audio data. * @param pcbWritten Number of bytes written. Optional. */ int AudioMixerSinkWrite(PAUDMIXSINK pSink, AUDMIXOP enmOp, const void *pvBuf, uint32_t cbBuf, uint32_t *pcbWritten) { RT_NOREF(enmOp); AssertPtrReturn(pSink, VERR_INVALID_POINTER); /* pcbWritten is optional. */ if (!pvBuf || !cbBuf) { if (pcbWritten) *pcbWritten = 0; return VINF_SUCCESS; } int rc = RTCritSectEnter(&pSink->CritSect); if (RT_FAILURE(rc)) return rc; AssertMsg(pSink->enmDir == AUDMIXSINKDIR_OUTPUT, ("Can't write to a sink which is not an output sink\n")); Log3Func(("[%s] enmOp=%d, cbBuf=%RU32\n", pSink->pszName, enmOp, cbBuf)); uint32_t cbProcessed; PAUDMIXSTREAM pMixStream; RTListForEach(&pSink->lstStreams, pMixStream, AUDMIXSTREAM, Node) { if (!(pMixStream->pConn->pfnStreamGetStatus(pMixStream->pConn, pMixStream->pStream) & PDMAUDIOSTRMSTS_FLAG_ENABLED)) { Log3Func(("\t%s: Stream '%s' Disabled, skipping ...\n", pMixStream->pszName, pMixStream->pStream->szName)); continue; } int rc2 = pMixStream->pConn->pfnStreamWrite(pMixStream->pConn, pMixStream->pStream, pvBuf, cbBuf, &cbProcessed); if (RT_FAILURE(rc2)) LogFlowFunc(("[%s] Failed writing to stream '%s': %Rrc\n", pSink->pszName, pMixStream->pStream->szName, rc2)); if (cbProcessed < cbBuf) { Log3Func(("[%s] Only written %RU32/%RU32 bytes for stream '%s'\n", pSink->pszName, cbProcessed, cbBuf, pMixStream->pStream->szName)); } } if (cbBuf) { /* Set dirty bit. */ pSink->fStatus |= AUDMIXSINK_STS_DIRTY; } if (pcbWritten) *pcbWritten = cbBuf; /* Always report back a complete write for now. */ int rc2 = RTCritSectLeave(&pSink->CritSect); AssertRC(rc2); return rc; } /********************************************************************************************************************************* * Mixer Stream implementation. ********************************************************************************************************************************/ /** * Controls a mixer stream. * * @returns IPRT status code. * @param pMixStream Mixer stream to control. * @param enmCmd Mixer stream command to use. * @param fCtl Additional control flags. Pass 0. */ int AudioMixerStreamCtl(PAUDMIXSTREAM pMixStream, PDMAUDIOSTREAMCMD enmCmd, uint32_t fCtl) { RT_NOREF(fCtl); AssertPtrReturn(pMixStream, VERR_INVALID_POINTER); /** @todo Validate fCtl. */ int rc = RTCritSectEnter(&pMixStream->CritSect); if (RT_FAILURE(rc)) return rc; AssertPtr(pMixStream->pConn); AssertPtr(pMixStream->pStream); rc = pMixStream->pConn->pfnStreamControl(pMixStream->pConn, pMixStream->pStream, enmCmd); LogFlowFunc(("[%s] enmCmd=%ld, rc=%Rrc\n", pMixStream->pszName, enmCmd, rc)); int rc2 = RTCritSectLeave(&pMixStream->CritSect); AssertRC(rc2); return rc; } /** * Destroys a mixer stream, internal version. * * @param pMixStream Mixer stream to destroy. */ static void audioMixerStreamDestroyInternal(PAUDMIXSTREAM pMixStream) { AssertPtrReturnVoid(pMixStream); LogFunc(("%s\n", pMixStream->pszName)); if (pMixStream->pConn) /* Stream has a connector interface present? */ { if (pMixStream->pStream) { pMixStream->pConn->pfnStreamRelease(pMixStream->pConn, pMixStream->pStream); pMixStream->pConn->pfnStreamDestroy(pMixStream->pConn, pMixStream->pStream); pMixStream->pStream = NULL; } pMixStream->pConn = NULL; } if (pMixStream->pszName) { RTStrFree(pMixStream->pszName); pMixStream->pszName = NULL; } int rc2 = RTCritSectDelete(&pMixStream->CritSect); AssertRC(rc2); RTMemFree(pMixStream); pMixStream = NULL; } /** * Destroys a mixer stream. * * @param pMixStream Mixer stream to destroy. */ void AudioMixerStreamDestroy(PAUDMIXSTREAM pMixStream) { if (!pMixStream) return; int rc2 = RTCritSectEnter(&pMixStream->CritSect); AssertRC(rc2); LogFunc(("%s\n", pMixStream->pszName)); if (pMixStream->pSink) /* Is the stream part of a sink? */ { /* Save sink pointer, as after audioMixerSinkRemoveStreamInternal() the * pointer will be gone from the stream. */ PAUDMIXSINK pSink = pMixStream->pSink; rc2 = audioMixerSinkRemoveStreamInternal(pSink, pMixStream); if (RT_SUCCESS(rc2)) { Assert(pSink->cStreams); pSink->cStreams--; } } else rc2 = VINF_SUCCESS; int rc3 = RTCritSectLeave(&pMixStream->CritSect); AssertRC(rc3); if (RT_SUCCESS(rc2)) { audioMixerStreamDestroyInternal(pMixStream); pMixStream = NULL; } LogFlowFunc(("Returning %Rrc\n", rc2)); } /** * Returns whether a mixer stream currently is active (playing/recording) or not. * * @returns @true if playing/recording, @false if not. * @param pMixStream Mixer stream to return status for. */ bool AudioMixerStreamIsActive(PAUDMIXSTREAM pMixStream) { int rc2 = RTCritSectEnter(&pMixStream->CritSect); if (RT_FAILURE(rc2)) return false; AssertPtr(pMixStream->pConn); AssertPtr(pMixStream->pStream); bool fIsActive; if ( pMixStream->pConn && pMixStream->pStream && RT_BOOL(pMixStream->pConn->pfnStreamGetStatus(pMixStream->pConn, pMixStream->pStream) & PDMAUDIOSTRMSTS_FLAG_ENABLED)) { fIsActive = true; } else fIsActive = false; rc2 = RTCritSectLeave(&pMixStream->CritSect); AssertRC(rc2); return fIsActive; } /** * Returns whether a mixer stream is valid (e.g. initialized and in a working state) or not. * * @returns @true if valid, @false if not. * @param pMixStream Mixer stream to return status for. */ bool AudioMixerStreamIsValid(PAUDMIXSTREAM pMixStream) { if (!pMixStream) return false; int rc2 = RTCritSectEnter(&pMixStream->CritSect); if (RT_FAILURE(rc2)) return false; bool fIsValid; if ( pMixStream->pConn && pMixStream->pStream && RT_BOOL(pMixStream->pConn->pfnStreamGetStatus(pMixStream->pConn, pMixStream->pStream) & PDMAUDIOSTRMSTS_FLAG_INITIALIZED)) { fIsValid = true; } else fIsValid = false; rc2 = RTCritSectLeave(&pMixStream->CritSect); AssertRC(rc2); return fIsValid; }