/* $Id: DrvHostPulseAudio.cpp 70994 2018-02-13 11:18:31Z vboxsync $ */ /** @file * VBox audio devices: Pulse Audio audio driver. */ /* * Copyright (C) 2006-2018 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. */ /********************************************************************************************************************************* * Header Files * *********************************************************************************************************************************/ #define LOG_GROUP LOG_GROUP_DRV_HOST_AUDIO #include #include #include #include #include #include RT_C_DECLS_BEGIN #include "pulse_mangling.h" #include "pulse_stubs.h" RT_C_DECLS_END #include #include "DrvAudio.h" #include "VBoxDD.h" /********************************************************************************************************************************* * Defines * *********************************************************************************************************************************/ #define VBOX_PULSEAUDIO_MAX_LOG_REL_ERRORS 32 /** @todo Make this configurable thru driver options. */ #ifndef PA_STREAM_NOFLAGS # define PA_STREAM_NOFLAGS (pa_context_flags_t)0x0000U /* since 0.9.19 */ #endif #ifndef PA_CONTEXT_NOFLAGS # define PA_CONTEXT_NOFLAGS (pa_context_flags_t)0x0000U /* since 0.9.19 */ #endif /** No flags specified. */ #define PULSEAUDIOENUMCBFLAGS_NONE 0 /** (Release) log found devices. */ #define PULSEAUDIOENUMCBFLAGS_LOG RT_BIT(0) /** Makes DRVHOSTPULSEAUDIO out of PDMIHOSTAUDIO. */ #define PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface) \ ( (PDRVHOSTPULSEAUDIO)((uintptr_t)pInterface - RT_OFFSETOF(DRVHOSTPULSEAUDIO, IHostAudio)) ) /********************************************************************************************************************************* * Structures * *********************************************************************************************************************************/ /** * Host Pulse audio driver instance data. * @implements PDMIAUDIOCONNECTOR */ typedef struct DRVHOSTPULSEAUDIO { /** Pointer to the driver instance structure. */ PPDMDRVINS pDrvIns; /** Pointer to PulseAudio's threaded main loop. */ pa_threaded_mainloop *pMainLoop; /** * Pointer to our PulseAudio context. * Note: We use a pMainLoop in a separate thread (pContext). * So either use callback functions or protect these functions * by pa_threaded_mainloop_lock() / pa_threaded_mainloop_unlock(). */ pa_context *pContext; /** Shutdown indicator. */ volatile bool fAbortLoop; /** Enumeration operation successful? */ volatile bool fEnumOpSuccess; /** Pointer to host audio interface. */ PDMIHOSTAUDIO IHostAudio; /** Error count for not flooding the release log. * Specify UINT32_MAX for unlimited logging. */ uint32_t cLogErrors; /** The stream (base) name; needed for distinguishing * streams in the PulseAudio mixer controls if multiple * VMs are running at the same time. */ char szStreamName[64]; } DRVHOSTPULSEAUDIO, *PDRVHOSTPULSEAUDIO; typedef struct PULSEAUDIOSTREAM { /** The stream's acquired configuration. */ PPDMAUDIOSTREAMCFG pCfg; /** Pointer to driver instance. */ PDRVHOSTPULSEAUDIO pDrv; /** Pointer to opaque PulseAudio stream. */ pa_stream *pStream; /** Pulse sample format and attribute specification. */ pa_sample_spec SampleSpec; /** Pulse playback and buffer metrics. */ pa_buffer_attr BufAttr; int fOpSuccess; /** Pointer to Pulse sample peeking buffer. */ const uint8_t *pu8PeekBuf; /** Current size (in bytes) of peeking data in * buffer. */ size_t cbPeekBuf; /** Our offset (in bytes) in peeking buffer. */ size_t offPeekBuf; pa_operation *pDrainOp; /** Number of occurred audio data underflows. */ uint32_t cUnderflows; /** Current latency (in us). */ uint64_t curLatencyUs; #ifdef LOG_ENABLED /** Start time stamp (in us) of stream playback / recording. */ pa_usec_t tsStartUs; /** Time stamp (in us) when last read from / written to the stream. */ pa_usec_t tsLastReadWrittenUs; #endif } PULSEAUDIOSTREAM, *PPULSEAUDIOSTREAM; /* The desired buffer length in milliseconds. Will be the target total stream * latency on newer version of pulse. Apparent latency can be less (or more.) */ typedef struct PULSEAUDIOCFG { RTMSINTERVAL buffer_msecs_out; RTMSINTERVAL buffer_msecs_in; } PULSEAUDIOCFG, *PPULSEAUDIOCFG; static PULSEAUDIOCFG s_pulseCfg = { 100, /* buffer_msecs_out */ 100 /* buffer_msecs_in */ }; /** * Callback context for server enumeration callbacks. */ typedef struct PULSEAUDIOENUMCBCTX { /** Pointer to host backend driver. */ PDRVHOSTPULSEAUDIO pDrv; /** Enumeration flags. */ uint32_t fFlags; /** Number of found input devices. */ uint8_t cDevIn; /** Number of found output devices. */ uint8_t cDevOut; /** Name of default sink being used. Must be free'd using RTStrFree(). */ char *pszDefaultSink; /** Name of default source being used. Must be free'd using RTStrFree(). */ char *pszDefaultSource; } PULSEAUDIOENUMCBCTX, *PPULSEAUDIOENUMCBCTX; #ifndef PA_CONTEXT_IS_GOOD /* To allow running on systems with PulseAudio < 0.9.11. */ static inline int PA_CONTEXT_IS_GOOD(pa_context_state_t x) { return x == PA_CONTEXT_CONNECTING || x == PA_CONTEXT_AUTHORIZING || x == PA_CONTEXT_SETTING_NAME || x == PA_CONTEXT_READY; } #endif /* !PA_CONTEXT_IS_GOOD */ #ifndef PA_STREAM_IS_GOOD /* To allow running on systems with PulseAudio < 0.9.11. */ static inline int PA_STREAM_IS_GOOD(pa_stream_state_t x) { return x == PA_STREAM_CREATING || x == PA_STREAM_READY; } #endif /* !PA_STREAM_IS_GOOD */ /********************************************************************************************************************************* * Prototypes * *********************************************************************************************************************************/ static int paEnumerate(PDRVHOSTPULSEAUDIO pThis, PPDMAUDIOBACKENDCFG pCfg, uint32_t fEnum); static int paError(PDRVHOSTPULSEAUDIO pThis, const char *szMsg); #ifdef DEBUG static void paStreamCbUnderflow(pa_stream *pStream, void *pvContext); static void paStreamCbReqWrite(pa_stream *pStream, size_t cbLen, void *pvContext); #endif static void paStreamCbSuccess(pa_stream *pStream, int fSuccess, void *pvContext); /** * Signal the main loop to abort. Just signalling isn't sufficient as the * mainloop might not have been entered yet. */ static void paSignalWaiter(PDRVHOSTPULSEAUDIO pThis) { if (!pThis) return; pThis->fAbortLoop = true; pa_threaded_mainloop_signal(pThis->pMainLoop, 0); } static pa_sample_format_t paAudioPropsToPulse(PPDMAUDIOPCMPROPS pProps) { switch (pProps->cBits) { case 8: if (!pProps->fSigned) return PA_SAMPLE_U8; break; case 16: if (pProps->fSigned) return PA_SAMPLE_S16LE; break; #ifdef PA_SAMPLE_S32LE case 32: if (pProps->fSigned) return PA_SAMPLE_S32LE; break; #endif default: break; } AssertMsgFailed(("%RU8%s not supported\n", pProps->cBits, pProps->fSigned ? "S" : "U")); return PA_SAMPLE_INVALID; } static int paPulseToAudioProps(pa_sample_format_t pulsefmt, PPDMAUDIOPCMPROPS pProps) { switch (pulsefmt) { case PA_SAMPLE_U8: pProps->cBits = 8; pProps->fSigned = false; break; case PA_SAMPLE_S16LE: pProps->cBits = 16; pProps->fSigned = true; break; case PA_SAMPLE_S16BE: pProps->cBits = 16; pProps->fSigned = true; /** @todo Handle Endianess. */ break; #ifdef PA_SAMPLE_S32LE case PA_SAMPLE_S32LE: pProps->cBits = 32; pProps->fSigned = true; break; #endif #ifdef PA_SAMPLE_S32BE case PA_SAMPLE_S32BE: pProps->cBits = 32; pProps->fSigned = true; /** @todo Handle Endianess. */ break; #endif default: AssertLogRelMsgFailed(("PulseAudio: Format (%ld) not supported\n", pulsefmt)); return VERR_NOT_SUPPORTED; } return VINF_SUCCESS; } /** * Synchronously wait until an operation completed. */ static int paWaitForEx(PDRVHOSTPULSEAUDIO pThis, pa_operation *pOP, RTMSINTERVAL cMsTimeout) { AssertPtrReturn(pThis, VERR_INVALID_POINTER); AssertPtrReturn(pOP, VERR_INVALID_POINTER); int rc = VINF_SUCCESS; uint64_t u64StartMs = RTTimeMilliTS(); while (pa_operation_get_state(pOP) == PA_OPERATION_RUNNING) { if (!pThis->fAbortLoop) { AssertPtr(pThis->pMainLoop); pa_threaded_mainloop_wait(pThis->pMainLoop); if ( !pThis->pContext || pa_context_get_state(pThis->pContext) != PA_CONTEXT_READY) { LogRel(("PulseAudio: pa_context_get_state context not ready\n")); break; } } pThis->fAbortLoop = false; uint64_t u64ElapsedMs = RTTimeMilliTS() - u64StartMs; if (u64ElapsedMs >= cMsTimeout) { rc = VERR_TIMEOUT; break; } } pa_operation_unref(pOP); return rc; } static int paWaitFor(PDRVHOSTPULSEAUDIO pThis, pa_operation *pOP) { return paWaitForEx(pThis, pOP, 10 * 1000 /* 10s timeout */); } /** * Context status changed. */ static void paContextCbStateChanged(pa_context *pCtx, void *pvUser) { AssertPtrReturnVoid(pCtx); PDRVHOSTPULSEAUDIO pThis = (PDRVHOSTPULSEAUDIO)pvUser; AssertPtrReturnVoid(pThis); switch (pa_context_get_state(pCtx)) { case PA_CONTEXT_READY: case PA_CONTEXT_TERMINATED: case PA_CONTEXT_FAILED: paSignalWaiter(pThis); break; default: break; } } /** * Callback called when our pa_stream_drain operation was completed. */ static void paStreamCbDrain(pa_stream *pStream, int fSuccess, void *pvUser) { AssertPtrReturnVoid(pStream); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pvUser; AssertPtrReturnVoid(pStreamPA); pStreamPA->fOpSuccess = fSuccess; if (fSuccess) { pa_operation_unref(pa_stream_cork(pStream, 1, paStreamCbSuccess, pvUser)); } else paError(pStreamPA->pDrv, "Failed to drain stream"); if (pStreamPA->pDrainOp) { pa_operation_unref(pStreamPA->pDrainOp); pStreamPA->pDrainOp = NULL; } } /** * Stream status changed. */ static void paStreamCbStateChanged(pa_stream *pStream, void *pvUser) { AssertPtrReturnVoid(pStream); PDRVHOSTPULSEAUDIO pThis = (PDRVHOSTPULSEAUDIO)pvUser; AssertPtrReturnVoid(pThis); switch (pa_stream_get_state(pStream)) { case PA_STREAM_READY: case PA_STREAM_FAILED: case PA_STREAM_TERMINATED: paSignalWaiter(pThis); break; default: break; } } #ifdef DEBUG static void paStreamCbReqWrite(pa_stream *pStream, size_t cbLen, void *pvContext) { RT_NOREF(cbLen, pvContext); PPULSEAUDIOSTREAM pStrm = (PPULSEAUDIOSTREAM)pvContext; AssertPtrReturnVoid(pStrm); pa_usec_t usec = 0; int neg = 0; pa_stream_get_latency(pStream, &usec, &neg); Log2Func(("Requested %zu bytes -- Current latency is %RU64ms\n", cbLen, usec / 1000)); } static void paStreamCbUnderflow(pa_stream *pStream, void *pvContext) { PPULSEAUDIOSTREAM pStrm = (PPULSEAUDIOSTREAM)pvContext; AssertPtrReturnVoid(pStrm); pStrm->cUnderflows++; Log2Func(("Warning: Hit underflow #%RU32\n", pStrm->cUnderflows)); if ( pStrm->cUnderflows >= 6 /** @todo Make this check configurable. */ && pStrm->curLatencyUs < 2000000 /* 2s */) { pStrm->curLatencyUs = (pStrm->curLatencyUs * 3) / 2; LogRel2(("PulseAudio: Output latency increased to %RU64ms\n", pStrm->curLatencyUs / 1000 /* ms */)); pStrm->BufAttr.maxlength = pa_usec_to_bytes(pStrm->curLatencyUs, &pStrm->SampleSpec); pStrm->BufAttr.tlength = pa_usec_to_bytes(pStrm->curLatencyUs, &pStrm->SampleSpec); pa_stream_set_buffer_attr(pStream, &pStrm->BufAttr, NULL, NULL); pStrm->cUnderflows = 0; } # ifdef LOG_ENABLED pa_usec_t curLatencyUs = 0; pa_stream_get_latency(pStream, &curLatencyUs, NULL /* Neg */); const pa_timing_info *pTInfo = pa_stream_get_timing_info(pStream); const pa_sample_spec *pSpec = pa_stream_get_sample_spec(pStream); pa_usec_t curPosWritesUs = pa_bytes_to_usec(pTInfo->write_index, pSpec); pa_usec_t curTsUs = pa_rtclock_now() - pStrm->tsStartUs; Log2Func(("curPosWrite=%RU64ms, curTs=%RU64ms, curDelta=%RI64ms, curLatency=%RU64ms\n", curPosWritesUs / 1000, curTsUs / 1000, (((int64_t)curPosWritesUs - (int64_t)curTsUs) / 1000), curLatencyUs / 1000)); # endif } static void paStreamCbOverflow(pa_stream *pStream, void *pvContext) { RT_NOREF(pStream, pvContext); Log2Func(("Warning: Hit overflow\n")); } #endif /* DEBUG */ static void paStreamCbSuccess(pa_stream *pStream, int fSuccess, void *pvUser) { AssertPtrReturnVoid(pStream); PPULSEAUDIOSTREAM pStrm = (PPULSEAUDIOSTREAM)pvUser; AssertPtrReturnVoid(pStrm); pStrm->fOpSuccess = fSuccess; if (fSuccess) paSignalWaiter(pStrm->pDrv); else paError(pStrm->pDrv, "Failed to finish stream operation"); } static int paStreamOpen(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, bool fIn, const char *pszName) { AssertPtrReturn(pThis, VERR_INVALID_POINTER); AssertPtrReturn(pStreamPA, VERR_INVALID_POINTER); AssertPtrReturn(pszName, VERR_INVALID_POINTER); int rc = VINF_SUCCESS; pa_stream *pStream = NULL; uint32_t flags = PA_STREAM_NOFLAGS; pa_threaded_mainloop_lock(pThis->pMainLoop); do { pa_sample_spec *pSampleSpec = &pStreamPA->SampleSpec; LogFunc(("Opening '%s', rate=%dHz, channels=%d, format=%s\n", pszName, pSampleSpec->rate, pSampleSpec->channels, pa_sample_format_to_string(pSampleSpec->format))); if (!pa_sample_spec_valid(pSampleSpec)) { LogRel(("PulseAudio: Unsupported sample specification for stream '%s'\n", pszName)); rc = VERR_NOT_SUPPORTED; break; } pa_buffer_attr *pBufAttr = &pStreamPA->BufAttr; /** @todo r=andy Use pa_stream_new_with_proplist instead. */ if (!(pStream = pa_stream_new(pThis->pContext, pszName, pSampleSpec, NULL /* pa_channel_map */))) { LogRel(("PulseAudio: Could not create stream '%s'\n", pszName)); rc = VERR_NO_MEMORY; break; } #ifdef DEBUG pa_stream_set_write_callback (pStream, paStreamCbReqWrite, pStreamPA); pa_stream_set_underflow_callback (pStream, paStreamCbUnderflow, pStreamPA); if (!fIn) /* Only for output streams. */ pa_stream_set_overflow_callback(pStream, paStreamCbOverflow, pStreamPA); #endif pa_stream_set_state_callback (pStream, paStreamCbStateChanged, pThis); #if PA_API_VERSION >= 12 /* XXX */ flags |= PA_STREAM_ADJUST_LATENCY; #endif /* For using pa_stream_get_latency() and pa_stream_get_time(). */ flags |= PA_STREAM_INTERPOLATE_TIMING | PA_STREAM_AUTO_TIMING_UPDATE; /* No input/output right away after the stream was started. */ flags |= PA_STREAM_START_CORKED; if (fIn) { LogFunc(("Input stream attributes: maxlength=%d fragsize=%d\n", pBufAttr->maxlength, pBufAttr->fragsize)); if (pa_stream_connect_record(pStream, /*dev=*/NULL, pBufAttr, (pa_stream_flags_t)flags) < 0) { LogRel(("PulseAudio: Could not connect input stream '%s': %s\n", pszName, pa_strerror(pa_context_errno(pThis->pContext)))); rc = VERR_AUDIO_BACKEND_INIT_FAILED; break; } } else { LogFunc(("Output buffer attributes: maxlength=%d tlength=%d prebuf=%d minreq=%d\n", pBufAttr->maxlength, pBufAttr->tlength, pBufAttr->prebuf, pBufAttr->minreq)); if (pa_stream_connect_playback(pStream, /*dev=*/NULL, pBufAttr, (pa_stream_flags_t)flags, /*cvolume=*/NULL, /*sync_stream=*/NULL) < 0) { LogRel(("PulseAudio: Could not connect playback stream '%s': %s\n", pszName, pa_strerror(pa_context_errno(pThis->pContext)))); rc = VERR_AUDIO_BACKEND_INIT_FAILED; break; } } /* Wait until the stream is ready. */ for (;;) { if (!pThis->fAbortLoop) pa_threaded_mainloop_wait(pThis->pMainLoop); pThis->fAbortLoop = false; pa_stream_state_t streamSt = pa_stream_get_state(pStream); if (streamSt == PA_STREAM_READY) break; else if ( streamSt == PA_STREAM_FAILED || streamSt == PA_STREAM_TERMINATED) { LogRel(("PulseAudio: Failed to initialize stream '%s' (state %ld)\n", pszName, streamSt)); rc = VERR_AUDIO_BACKEND_INIT_FAILED; break; } } #ifdef LOG_ENABLED pStreamPA->tsStartUs = pa_rtclock_now(); #endif if (RT_FAILURE(rc)) break; const pa_buffer_attr *pBufAttrObtained = pa_stream_get_buffer_attr(pStream); AssertPtr(pBufAttrObtained); memcpy(pBufAttr, pBufAttrObtained, sizeof(pa_buffer_attr)); LogFunc(("Obtained %s buffer attributes: tLength=%RU32, maxLength=%RU32, minReq=%RU32, fragSize=%RU32, preBuf=%RU32\n", fIn ? "capture" : "playback", pBufAttr->tlength, pBufAttr->maxlength, pBufAttr->minreq, pBufAttr->fragsize, pBufAttr->prebuf)); pStreamPA->pStream = pStream; } while (0); if ( RT_FAILURE(rc) && pStream) pa_stream_disconnect(pStream); pa_threaded_mainloop_unlock(pThis->pMainLoop); if (RT_FAILURE(rc)) { if (pStream) pa_stream_unref(pStream); } LogFlowFuncLeaveRC(rc); return rc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnInit} */ static DECLCALLBACK(int) drvHostPulseAudioInit(PPDMIHOSTAUDIO pInterface) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); LogFlowFuncEnter(); int rc = audioLoadPulseLib(); if (RT_FAILURE(rc)) { LogRel(("PulseAudio: Failed to load the PulseAudio shared library! Error %Rrc\n", rc)); return rc; } pThis->fAbortLoop = false; pThis->pMainLoop = NULL; bool fLocked = false; do { if (!(pThis->pMainLoop = pa_threaded_mainloop_new())) { LogRel(("PulseAudio: Failed to allocate main loop: %s\n", pa_strerror(pa_context_errno(pThis->pContext)))); rc = VERR_NO_MEMORY; break; } if (!(pThis->pContext = pa_context_new(pa_threaded_mainloop_get_api(pThis->pMainLoop), "VirtualBox"))) { LogRel(("PulseAudio: Failed to allocate context: %s\n", pa_strerror(pa_context_errno(pThis->pContext)))); rc = VERR_NO_MEMORY; break; } if (pa_threaded_mainloop_start(pThis->pMainLoop) < 0) { LogRel(("PulseAudio: Failed to start threaded mainloop: %s\n", pa_strerror(pa_context_errno(pThis->pContext)))); rc = VERR_AUDIO_BACKEND_INIT_FAILED; break; } /* Install a global callback to known if something happens to our acquired context. */ pa_context_set_state_callback(pThis->pContext, paContextCbStateChanged, pThis /* pvUserData */); pa_threaded_mainloop_lock(pThis->pMainLoop); fLocked = true; if (pa_context_connect(pThis->pContext, NULL /* pszServer */, PA_CONTEXT_NOFLAGS, NULL) < 0) { LogRel(("PulseAudio: Failed to connect to server: %s\n", pa_strerror(pa_context_errno(pThis->pContext)))); rc = VERR_AUDIO_BACKEND_INIT_FAILED; break; } /* Wait until the pThis->pContext is ready. */ for (;;) { if (!pThis->fAbortLoop) pa_threaded_mainloop_wait(pThis->pMainLoop); pThis->fAbortLoop = false; pa_context_state_t cstate = pa_context_get_state(pThis->pContext); if (cstate == PA_CONTEXT_READY) break; else if ( cstate == PA_CONTEXT_TERMINATED || cstate == PA_CONTEXT_FAILED) { LogRel(("PulseAudio: Failed to initialize context (state %d)\n", cstate)); rc = VERR_AUDIO_BACKEND_INIT_FAILED; break; } } } while (0); if (fLocked) pa_threaded_mainloop_unlock(pThis->pMainLoop); if (RT_FAILURE(rc)) { if (pThis->pMainLoop) pa_threaded_mainloop_stop(pThis->pMainLoop); if (pThis->pContext) { pa_context_disconnect(pThis->pContext); pa_context_unref(pThis->pContext); pThis->pContext = NULL; } if (pThis->pMainLoop) { pa_threaded_mainloop_free(pThis->pMainLoop); pThis->pMainLoop = NULL; } } LogFlowFuncLeaveRC(rc); return rc; } static int paCreateStreamOut(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq) { pStreamPA->pDrainOp = NULL; pStreamPA->SampleSpec.format = paAudioPropsToPulse(&pCfgReq->Props); pStreamPA->SampleSpec.rate = pCfgReq->Props.uHz; pStreamPA->SampleSpec.channels = pCfgReq->Props.cChannels; pStreamPA->curLatencyUs = 100 * 1000; /** 10ms latency by default. @todo Make this configurable. */ const uint32_t cbLatency = pa_usec_to_bytes(pStreamPA->curLatencyUs, &pStreamPA->SampleSpec); LogRel2(("PulseAudio: Initial output latency is %RU64ms (%RU32 bytes)\n", pStreamPA->curLatencyUs / 1000 /* ms */, cbLatency)); pStreamPA->BufAttr.tlength = cbLatency; pStreamPA->BufAttr.maxlength = (pStreamPA->BufAttr.tlength * 3) / 2; pStreamPA->BufAttr.prebuf = cbLatency; pStreamPA->BufAttr.minreq = (uint32_t)-1; /* PulseAudio should set something sensible for minreq on it's own. */ LogFunc(("BufAttr tlength=%RU32, maxLength=%RU32, minReq=%RU32\n", pStreamPA->BufAttr.tlength, pStreamPA->BufAttr.maxlength, pStreamPA->BufAttr.minreq)); Assert(pCfgReq->enmDir == PDMAUDIODIR_OUT); char szName[256]; RTStrPrintf2(szName, sizeof(szName), "VirtualBox %s [%s]", DrvAudioHlpPlaybackDstToStr(pCfgReq->DestSource.Dest), pThis->szStreamName); /* Note that the struct BufAttr is updated to the obtained values after this call! */ int rc = paStreamOpen(pThis, pStreamPA, false /* fIn */, szName); if (RT_FAILURE(rc)) return rc; rc = paPulseToAudioProps(pStreamPA->SampleSpec.format, &pCfgAcq->Props); if (RT_FAILURE(rc)) { LogRel(("PulseAudio: Cannot find audio output format %ld\n", pStreamPA->SampleSpec.format)); return rc; } pCfgAcq->Props.uHz = pStreamPA->SampleSpec.rate; pCfgAcq->Props.cChannels = pStreamPA->SampleSpec.channels; pCfgAcq->Props.cShift = PDMAUDIOPCMPROPS_MAKE_SHIFT_PARMS(pCfgAcq->Props.cBits, pCfgAcq->Props.cChannels); uint32_t cbBuf = RT_MIN(pStreamPA->BufAttr.tlength * 2, pStreamPA->BufAttr.maxlength); /** @todo Make this configurable! */ if (cbBuf) { pCfgAcq->cFrameBufferHint = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, cbBuf); pStreamPA->pDrv = pThis; } else rc = VERR_INVALID_PARAMETER; return rc; } static int paCreateStreamIn(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq) { pStreamPA->SampleSpec.format = paAudioPropsToPulse(&pCfgReq->Props); pStreamPA->SampleSpec.rate = pCfgReq->Props.uHz; pStreamPA->SampleSpec.channels = pCfgReq->Props.cChannels; /** @todo Check these values! */ pStreamPA->BufAttr.fragsize = (pa_bytes_per_second(&pStreamPA->SampleSpec) * s_pulseCfg.buffer_msecs_in) / 1000; pStreamPA->BufAttr.maxlength = (pStreamPA->BufAttr.fragsize * 3) / 2; Assert(pCfgReq->enmDir == PDMAUDIODIR_IN); char szName[256]; RTStrPrintf2(szName, sizeof(szName), "VirtualBox %s [%s]", DrvAudioHlpRecSrcToStr(pCfgReq->DestSource.Source), pThis->szStreamName); /* Note: Other members of BufAttr are ignored for record streams. */ int rc = paStreamOpen(pThis, pStreamPA, true /* fIn */, szName); if (RT_FAILURE(rc)) return rc; rc = paPulseToAudioProps(pStreamPA->SampleSpec.format, &pCfgAcq->Props); if (RT_FAILURE(rc)) { LogRel(("PulseAudio: Cannot find audio capture format %ld\n", pStreamPA->SampleSpec.format)); return rc; } pStreamPA->pDrv = pThis; pStreamPA->pu8PeekBuf = NULL; pCfgAcq->Props.uHz = pStreamPA->SampleSpec.rate; pCfgAcq->Props.cChannels = pStreamPA->SampleSpec.channels; pCfgAcq->cFrameBufferHint = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, RT_MIN(pStreamPA->BufAttr.fragsize * 10, pStreamPA->BufAttr.maxlength)); LogFlowFuncLeaveRC(rc); return rc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCapture} */ static DECLCALLBACK(int) drvHostPulseAudioStreamCapture(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, void *pvBuf, uint32_t cxBuf, uint32_t *pcxRead) { RT_NOREF(pvBuf, cxBuf); AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); AssertPtrReturn(pvBuf, VERR_INVALID_POINTER); AssertReturn(cxBuf, VERR_INVALID_PARAMETER); /* pcbRead is optional. */ PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream; /* We should only call pa_stream_readable_size() once and trust the first value. */ pa_threaded_mainloop_lock(pThis->pMainLoop); size_t cbAvail = pa_stream_readable_size(pStreamPA->pStream); pa_threaded_mainloop_unlock(pThis->pMainLoop); if (cbAvail == (size_t)-1) return paError(pStreamPA->pDrv, "Failed to determine input data size"); /* If the buffer was not dropped last call, add what remains. */ if (pStreamPA->pu8PeekBuf) { Assert(pStreamPA->cbPeekBuf >= pStreamPA->offPeekBuf); cbAvail += (pStreamPA->cbPeekBuf - pStreamPA->offPeekBuf); } Log3Func(("cbAvail=%zu\n", cbAvail)); if (!cbAvail) /* No data? Bail out. */ { if (pcxRead) *pcxRead = 0; return VINF_SUCCESS; } int rc = VINF_SUCCESS; size_t cbToRead = RT_MIN(cbAvail, cxBuf); Log3Func(("cbToRead=%zu, cbAvail=%zu, offPeekBuf=%zu, cbPeekBuf=%zu\n", cbToRead, cbAvail, pStreamPA->offPeekBuf, pStreamPA->cbPeekBuf)); uint32_t cbReadTotal = 0; while (cbToRead) { /* If there is no data, do another peek. */ if (!pStreamPA->pu8PeekBuf) { pa_threaded_mainloop_lock(pThis->pMainLoop); pa_stream_peek(pStreamPA->pStream, (const void**)&pStreamPA->pu8PeekBuf, &pStreamPA->cbPeekBuf); pa_threaded_mainloop_unlock(pThis->pMainLoop); pStreamPA->offPeekBuf = 0; /* No data anymore? * Note: If there's a data hole (cbPeekBuf then contains the length of the hole) * we need to drop the stream lateron. */ if ( !pStreamPA->pu8PeekBuf && !pStreamPA->cbPeekBuf) { break; } } Assert(pStreamPA->cbPeekBuf >= pStreamPA->offPeekBuf); size_t cbToWrite = RT_MIN(pStreamPA->cbPeekBuf - pStreamPA->offPeekBuf, cbToRead); Log3Func(("cbToRead=%zu, cbToWrite=%zu, offPeekBuf=%zu, cbPeekBuf=%zu, pu8PeekBuf=%p\n", cbToRead, cbToWrite, pStreamPA->offPeekBuf, pStreamPA->cbPeekBuf, pStreamPA->pu8PeekBuf)); if ( cbToWrite /* Only copy data if it's not a data hole (see above). */ && pStreamPA->pu8PeekBuf && pStreamPA->cbPeekBuf) { memcpy((uint8_t *)pvBuf + cbReadTotal, pStreamPA->pu8PeekBuf + pStreamPA->offPeekBuf, cbToWrite); Assert(cbToRead >= cbToWrite); cbToRead -= cbToWrite; cbReadTotal += cbToWrite; pStreamPA->offPeekBuf += cbToWrite; Assert(pStreamPA->offPeekBuf <= pStreamPA->cbPeekBuf); } if (/* Nothing to write anymore? Drop the buffer. */ !cbToWrite /* Was there a hole in the peeking buffer? Drop it. */ || !pStreamPA->pu8PeekBuf /* If the buffer is done, drop it. */ || pStreamPA->offPeekBuf == pStreamPA->cbPeekBuf) { pa_threaded_mainloop_lock(pThis->pMainLoop); pa_stream_drop(pStreamPA->pStream); pa_threaded_mainloop_unlock(pThis->pMainLoop); pStreamPA->pu8PeekBuf = NULL; } } if (RT_SUCCESS(rc)) { if (pcxRead) *pcxRead = cbReadTotal; } return rc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamPlay} */ static DECLCALLBACK(int) drvHostPulseAudioStreamPlay(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, const void *pvBuf, uint32_t cxBuf, uint32_t *pcxWritten) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); AssertPtrReturn(pvBuf, VERR_INVALID_POINTER); AssertReturn(cxBuf, VERR_INVALID_PARAMETER); /* pcxWritten is optional. */ PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pPAStream = (PPULSEAUDIOSTREAM)pStream; int rc = VINF_SUCCESS; uint32_t cbWrittenTotal = 0; pa_threaded_mainloop_lock(pThis->pMainLoop); #ifdef LOG_ENABLED const pa_usec_t tsNowUs = pa_rtclock_now(); const pa_usec_t tsDeltaPlayedUs = tsNowUs - pPAStream->tsLastReadWrittenUs; Log3Func(("tsDeltaPlayedMs=%RU64\n", tsDeltaPlayedUs / 1000 /* ms */)); pPAStream->tsLastReadWrittenUs = tsNowUs; #endif do { size_t cbWriteable = pa_stream_writable_size(pPAStream->pStream); if (cbWriteable == (size_t)-1) { rc = paError(pPAStream->pDrv, "Failed to determine output data size"); break; } size_t cbLeft = RT_MIN(cbWriteable, cxBuf); Assert(cbLeft); /* At this point we better have *something* to write. */ while (cbLeft) { uint32_t cbChunk = cbLeft; /* Write all at once for now. */ if (pa_stream_write(pPAStream->pStream, (uint8_t *)pvBuf + cbWrittenTotal, cbChunk, NULL /* Cleanup callback */, 0, PA_SEEK_RELATIVE) < 0) { rc = paError(pPAStream->pDrv, "Failed to write to output stream"); break; } Assert(cbLeft >= cbChunk); cbLeft -= cbChunk; cbWrittenTotal += cbChunk; } } while (0); pa_threaded_mainloop_unlock(pThis->pMainLoop); if (RT_SUCCESS(rc)) { if (pcxWritten) *pcxWritten = cbWrittenTotal; } return rc; } /** @todo Implement va handling. */ static int paError(PDRVHOSTPULSEAUDIO pThis, const char *szMsg) { AssertPtrReturn(pThis, VERR_INVALID_POINTER); AssertPtrReturn(szMsg, VERR_INVALID_POINTER); if (pThis->cLogErrors++ < VBOX_PULSEAUDIO_MAX_LOG_REL_ERRORS) { int rc2 = pa_context_errno(pThis->pContext); LogRel2(("PulseAudio: %s: %s\n", szMsg, pa_strerror(rc2))); } /** @todo Implement some PulseAudio -> IPRT mapping here. */ return VERR_GENERAL_FAILURE; } static void paEnumSinkCb(pa_context *pCtx, const pa_sink_info *pInfo, int eol, void *pvUserData) { if (eol > 0) return; PPULSEAUDIOENUMCBCTX pCbCtx = (PPULSEAUDIOENUMCBCTX)pvUserData; AssertPtrReturnVoid(pCbCtx); PDRVHOSTPULSEAUDIO pThis = pCbCtx->pDrv; AssertPtrReturnVoid(pThis); if (eol < 0) { pThis->fEnumOpSuccess = false; pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0); return; } AssertPtrReturnVoid(pCtx); AssertPtrReturnVoid(pInfo); LogRel2(("PulseAudio: Using output sink '%s'\n", pInfo->name)); /** @todo Store sinks + channel mapping in callback context as soon as we have surround support. */ pCbCtx->cDevOut++; pThis->fEnumOpSuccess = true; pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0); } static void paEnumSourceCb(pa_context *pCtx, const pa_source_info *pInfo, int eol, void *pvUserData) { if (eol > 0) return; PPULSEAUDIOENUMCBCTX pCbCtx = (PPULSEAUDIOENUMCBCTX)pvUserData; AssertPtrReturnVoid(pCbCtx); PDRVHOSTPULSEAUDIO pThis = pCbCtx->pDrv; AssertPtrReturnVoid(pThis); if (eol < 0) { pThis->fEnumOpSuccess = false; pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0); return; } AssertPtrReturnVoid(pCtx); AssertPtrReturnVoid(pInfo); LogRel2(("PulseAudio: Using input source '%s'\n", pInfo->name)); /** @todo Store sources + channel mapping in callback context as soon as we have surround support. */ pCbCtx->cDevIn++; pThis->fEnumOpSuccess = true; pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0); } static void paEnumServerCb(pa_context *pCtx, const pa_server_info *pInfo, void *pvUserData) { AssertPtrReturnVoid(pCtx); PPULSEAUDIOENUMCBCTX pCbCtx = (PPULSEAUDIOENUMCBCTX)pvUserData; AssertPtrReturnVoid(pCbCtx); PDRVHOSTPULSEAUDIO pThis = pCbCtx->pDrv; AssertPtrReturnVoid(pThis); if (!pInfo) { pThis->fEnumOpSuccess = false; pa_threaded_mainloop_signal(pCbCtx->pDrv->pMainLoop, 0); return; } if (pInfo->default_sink_name) { Assert(RTStrIsValidEncoding(pInfo->default_sink_name)); pCbCtx->pszDefaultSink = RTStrDup(pInfo->default_sink_name); } if (pInfo->default_sink_name) { Assert(RTStrIsValidEncoding(pInfo->default_source_name)); pCbCtx->pszDefaultSource = RTStrDup(pInfo->default_source_name); } pThis->fEnumOpSuccess = true; pa_threaded_mainloop_signal(pThis->pMainLoop, 0); } static int paEnumerate(PDRVHOSTPULSEAUDIO pThis, PPDMAUDIOBACKENDCFG pCfg, uint32_t fEnum) { AssertPtrReturn(pThis, VERR_INVALID_POINTER); AssertPtrReturn(pCfg, VERR_INVALID_POINTER); PDMAUDIOBACKENDCFG Cfg; RT_ZERO(Cfg); Cfg.cbStreamOut = sizeof(PULSEAUDIOSTREAM); Cfg.cbStreamIn = sizeof(PULSEAUDIOSTREAM); Cfg.cMaxStreamsOut = UINT32_MAX; Cfg.cMaxStreamsIn = UINT32_MAX; PULSEAUDIOENUMCBCTX CbCtx; RT_ZERO(CbCtx); CbCtx.pDrv = pThis; CbCtx.fFlags = fEnum; bool fLog = (fEnum & PULSEAUDIOENUMCBFLAGS_LOG); pa_threaded_mainloop_lock(pThis->pMainLoop); pThis->fEnumOpSuccess = false; int rc = paWaitFor(pThis, pa_context_get_server_info(pThis->pContext, paEnumServerCb, &CbCtx)); if (RT_SUCCESS(rc) && !pThis->fEnumOpSuccess) rc = VERR_AUDIO_BACKEND_INIT_FAILED; /* error code does not matter */ if (RT_SUCCESS(rc)) { if (CbCtx.pszDefaultSink) { if (fLog) LogRel2(("PulseAudio: Default output sink is '%s'\n", CbCtx.pszDefaultSink)); pThis->fEnumOpSuccess = false; rc = paWaitFor(pThis, pa_context_get_sink_info_by_name(pThis->pContext, CbCtx.pszDefaultSink, paEnumSinkCb, &CbCtx)); if (RT_SUCCESS(rc) && !pThis->fEnumOpSuccess) rc = VERR_AUDIO_BACKEND_INIT_FAILED; /* error code does not matter */ if ( RT_FAILURE(rc) && fLog) { LogRel(("PulseAudio: Error enumerating properties for default output sink '%s'\n", CbCtx.pszDefaultSink)); } } else if (fLog) LogRel2(("PulseAudio: No default output sink found\n")); if (RT_SUCCESS(rc)) { if (CbCtx.pszDefaultSource) { if (fLog) LogRel2(("PulseAudio: Default input source is '%s'\n", CbCtx.pszDefaultSource)); pThis->fEnumOpSuccess = false; rc = paWaitFor(pThis, pa_context_get_source_info_by_name(pThis->pContext, CbCtx.pszDefaultSource, paEnumSourceCb, &CbCtx)); if ( (RT_FAILURE(rc) || !pThis->fEnumOpSuccess) && fLog) { LogRel(("PulseAudio: Error enumerating properties for default input source '%s'\n", CbCtx.pszDefaultSource)); } } else if (fLog) LogRel2(("PulseAudio: No default input source found\n")); } if (RT_SUCCESS(rc)) { if (fLog) { LogRel2(("PulseAudio: Found %RU8 host playback device(s)\n", CbCtx.cDevOut)); LogRel2(("PulseAudio: Found %RU8 host capturing device(s)\n", CbCtx.cDevIn)); } if (pCfg) memcpy(pCfg, &Cfg, sizeof(PDMAUDIOBACKENDCFG)); } if (CbCtx.pszDefaultSink) { RTStrFree(CbCtx.pszDefaultSink); CbCtx.pszDefaultSink = NULL; } if (CbCtx.pszDefaultSource) { RTStrFree(CbCtx.pszDefaultSource); CbCtx.pszDefaultSource = NULL; } } else if (fLog) LogRel(("PulseAudio: Error enumerating PulseAudio server properties\n")); pa_threaded_mainloop_unlock(pThis->pMainLoop); LogFlowFuncLeaveRC(rc); return rc; } static int paDestroyStreamIn(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA) { LogFlowFuncEnter(); if (pStreamPA->pStream) { pa_threaded_mainloop_lock(pThis->pMainLoop); pa_stream_disconnect(pStreamPA->pStream); pa_stream_unref(pStreamPA->pStream); pStreamPA->pStream = NULL; pa_threaded_mainloop_unlock(pThis->pMainLoop); } return VINF_SUCCESS; } static int paDestroyStreamOut(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA) { if (pStreamPA->pStream) { pa_threaded_mainloop_lock(pThis->pMainLoop); /* Make sure to cancel a pending draining operation, if any. */ if (pStreamPA->pDrainOp) { pa_operation_cancel(pStreamPA->pDrainOp); pStreamPA->pDrainOp = NULL; } pa_stream_disconnect(pStreamPA->pStream); pa_stream_unref(pStreamPA->pStream); pStreamPA->pStream = NULL; pa_threaded_mainloop_unlock(pThis->pMainLoop); } return VINF_SUCCESS; } static int paControlStreamOut(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, PDMAUDIOSTREAMCMD enmStreamCmd) { int rc = VINF_SUCCESS; switch (enmStreamCmd) { case PDMAUDIOSTREAMCMD_ENABLE: case PDMAUDIOSTREAMCMD_RESUME: { pa_threaded_mainloop_lock(pThis->pMainLoop); if ( pStreamPA->pDrainOp && pa_operation_get_state(pStreamPA->pDrainOp) != PA_OPERATION_DONE) { pa_operation_cancel(pStreamPA->pDrainOp); pa_operation_unref(pStreamPA->pDrainOp); pStreamPA->pDrainOp = NULL; } else { /* Uncork (resume) stream. */ rc = paWaitFor(pThis, pa_stream_cork(pStreamPA->pStream, 0 /* Uncork */, paStreamCbSuccess, pStreamPA)); } pa_threaded_mainloop_unlock(pThis->pMainLoop); break; } case PDMAUDIOSTREAMCMD_DISABLE: case PDMAUDIOSTREAMCMD_PAUSE: { /* Pause audio output (the Pause bit of the AC97 x_CR register is set). * Note that we must return immediately from here! */ pa_threaded_mainloop_lock(pThis->pMainLoop); if (!pStreamPA->pDrainOp) { rc = paWaitFor(pThis, pa_stream_trigger(pStreamPA->pStream, paStreamCbSuccess, pStreamPA)); if (RT_SUCCESS(rc)) pStreamPA->pDrainOp = pa_stream_drain(pStreamPA->pStream, paStreamCbDrain, pStreamPA); } pa_threaded_mainloop_unlock(pThis->pMainLoop); break; } default: AssertMsgFailed(("Invalid command %ld\n", enmStreamCmd)); rc = VERR_INVALID_PARAMETER; break; } LogFlowFuncLeaveRC(rc); return rc; } static int paControlStreamIn(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA, PDMAUDIOSTREAMCMD enmStreamCmd) { int rc = VINF_SUCCESS; LogFlowFunc(("enmStreamCmd=%ld\n", enmStreamCmd)); switch (enmStreamCmd) { case PDMAUDIOSTREAMCMD_ENABLE: case PDMAUDIOSTREAMCMD_RESUME: { pa_threaded_mainloop_lock(pThis->pMainLoop); rc = paWaitFor(pThis, pa_stream_cork(pStreamPA->pStream, 0 /* Play / resume */, paStreamCbSuccess, pStreamPA)); pa_threaded_mainloop_unlock(pThis->pMainLoop); break; } case PDMAUDIOSTREAMCMD_DISABLE: case PDMAUDIOSTREAMCMD_PAUSE: { pa_threaded_mainloop_lock(pThis->pMainLoop); if (pStreamPA->pu8PeekBuf) /* Do we need to drop the peek buffer?*/ { pa_stream_drop(pStreamPA->pStream); pStreamPA->pu8PeekBuf = NULL; } rc = paWaitFor(pThis, pa_stream_cork(pStreamPA->pStream, 1 /* Stop / pause */, paStreamCbSuccess, pStreamPA)); pa_threaded_mainloop_unlock(pThis->pMainLoop); break; } default: AssertMsgFailed(("Invalid command %ld\n", enmStreamCmd)); rc = VERR_INVALID_PARAMETER; break; } return rc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnShutdown} */ static DECLCALLBACK(void) drvHostPulseAudioShutdown(PPDMIHOSTAUDIO pInterface) { AssertPtrReturnVoid(pInterface); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); LogFlowFuncEnter(); if (pThis->pMainLoop) pa_threaded_mainloop_stop(pThis->pMainLoop); if (pThis->pContext) { pa_context_disconnect(pThis->pContext); pa_context_unref(pThis->pContext); pThis->pContext = NULL; } if (pThis->pMainLoop) { pa_threaded_mainloop_free(pThis->pMainLoop); pThis->pMainLoop = NULL; } LogFlowFuncLeave(); } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnGetConfig} */ static DECLCALLBACK(int) drvHostPulseAudioGetConfig(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDCFG pBackendCfg) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pBackendCfg, VERR_INVALID_POINTER); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); return paEnumerate(pThis, pBackendCfg, PULSEAUDIOENUMCBFLAGS_LOG /* fEnum */); } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnGetStatus} */ static DECLCALLBACK(PDMAUDIOBACKENDSTS) drvHostPulseAudioGetStatus(PPDMIHOSTAUDIO pInterface, PDMAUDIODIR enmDir) { RT_NOREF(enmDir); AssertPtrReturn(pInterface, PDMAUDIOBACKENDSTS_UNKNOWN); return PDMAUDIOBACKENDSTS_RUNNING; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamCreate} */ static DECLCALLBACK(int) drvHostPulseAudioStreamCreate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, PPDMAUDIOSTREAMCFG pCfgReq, PPDMAUDIOSTREAMCFG pCfgAcq) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); AssertPtrReturn(pCfgReq, VERR_INVALID_POINTER); AssertPtrReturn(pCfgAcq, VERR_INVALID_POINTER); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream; int rc; if (pCfgReq->enmDir == PDMAUDIODIR_IN) rc = paCreateStreamIn (pThis, pStreamPA, pCfgReq, pCfgAcq); else if (pCfgReq->enmDir == PDMAUDIODIR_OUT) rc = paCreateStreamOut(pThis, pStreamPA, pCfgReq, pCfgAcq); else AssertFailedReturn(VERR_NOT_IMPLEMENTED); if (RT_SUCCESS(rc)) { pStreamPA->pCfg = DrvAudioHlpStreamCfgDup(pCfgAcq); if (!pStreamPA->pCfg) rc = VERR_NO_MEMORY; } return rc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamDestroy} */ static DECLCALLBACK(int) drvHostPulseAudioStreamDestroy(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream; if (!pStreamPA->pCfg) /* Not (yet) configured? Skip. */ return VINF_SUCCESS; int rc; if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_IN) rc = paDestroyStreamIn (pThis, pStreamPA); else if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_OUT) rc = paDestroyStreamOut(pThis, pStreamPA); else AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED); if (RT_SUCCESS(rc)) { DrvAudioHlpStreamCfgFree(pStreamPA->pCfg); pStreamPA->pCfg = NULL; } return rc; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamControl} */ static DECLCALLBACK(int) drvHostPulseAudioStreamControl(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream, PDMAUDIOSTREAMCMD enmStreamCmd) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream; if (!pStreamPA->pCfg) /* Not (yet) configured? Skip. */ return VINF_SUCCESS; int rc; if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_IN) rc = paControlStreamIn (pThis, pStreamPA, enmStreamCmd); else if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_OUT) rc = paControlStreamOut(pThis, pStreamPA, enmStreamCmd); else AssertFailedStmt(rc = VERR_NOT_IMPLEMENTED); return rc; } static uint32_t paStreamGetAvail(PDRVHOSTPULSEAUDIO pThis, PPULSEAUDIOSTREAM pStreamPA) { pa_threaded_mainloop_lock(pThis->pMainLoop); uint32_t cbAvail = 0; if (PA_STREAM_IS_GOOD(pa_stream_get_state(pStreamPA->pStream))) { if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_IN) { cbAvail = (uint32_t)pa_stream_readable_size(pStreamPA->pStream); Log3Func(("cbReadable=%RU32\n", cbAvail)); } else if (pStreamPA->pCfg->enmDir == PDMAUDIODIR_OUT) { size_t cbWritable = pa_stream_writable_size(pStreamPA->pStream); Log3Func(("cbWritable=%zu, maxLength=%RU32, minReq=%RU32\n", cbWritable, pStreamPA->BufAttr.maxlength, pStreamPA->BufAttr.minreq)); /* Don't report more writable than the PA server can handle. */ if (cbWritable > pStreamPA->BufAttr.maxlength) cbWritable = pStreamPA->BufAttr.maxlength; cbAvail = (uint32_t)cbWritable; } else AssertFailed(); } pa_threaded_mainloop_unlock(pThis->pMainLoop); return cbAvail; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetReadable} */ static DECLCALLBACK(uint32_t) drvHostPulseAudioStreamGetReadable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream; return paStreamGetAvail(pThis, pStreamPA); } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetWritable} */ static DECLCALLBACK(uint32_t) drvHostPulseAudioStreamGetWritable(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PPULSEAUDIOSTREAM pStreamPA = (PPULSEAUDIOSTREAM)pStream; return paStreamGetAvail(pThis, pStreamPA); } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamGetStatus} */ static DECLCALLBACK(PDMAUDIOSTREAMSTS) drvHostPulseAudioStreamGetStatus(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); RT_NOREF(pStream); PDRVHOSTPULSEAUDIO pThis = PDMIHOSTAUDIO_2_DRVHOSTPULSEAUDIO(pInterface); PDMAUDIOSTREAMSTS strmSts = PDMAUDIOSTREAMSTS_FLAG_NONE; /* Check PulseAudio's general status. */ if ( pThis->pContext && PA_CONTEXT_IS_GOOD(pa_context_get_state(pThis->pContext))) { strmSts = PDMAUDIOSTREAMSTS_FLAG_INITIALIZED | PDMAUDIOSTREAMSTS_FLAG_ENABLED; } return strmSts; } /** * @interface_method_impl{PDMIHOSTAUDIO,pfnStreamIterate} */ static DECLCALLBACK(int) drvHostPulseAudioStreamIterate(PPDMIHOSTAUDIO pInterface, PPDMAUDIOBACKENDSTREAM pStream) { AssertPtrReturn(pInterface, VERR_INVALID_POINTER); AssertPtrReturn(pStream, VERR_INVALID_POINTER); LogFlowFuncEnter(); /* Nothing to do here for PulseAudio. */ return VINF_SUCCESS; } /** * @interface_method_impl{PDMIBASE,pfnQueryInterface} */ static DECLCALLBACK(void *) drvHostPulseAudioQueryInterface(PPDMIBASE pInterface, const char *pszIID) { AssertPtrReturn(pInterface, NULL); AssertPtrReturn(pszIID, NULL); PPDMDRVINS pDrvIns = PDMIBASE_2_PDMDRV(pInterface); PDRVHOSTPULSEAUDIO pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTPULSEAUDIO); PDMIBASE_RETURN_INTERFACE(pszIID, PDMIBASE, &pDrvIns->IBase); PDMIBASE_RETURN_INTERFACE(pszIID, PDMIHOSTAUDIO, &pThis->IHostAudio); return NULL; } /** * Destructs a PulseAudio Audio driver instance. * * @copydoc FNPDMDRVDESTRUCT */ static DECLCALLBACK(void) drvHostPulseAudioDestruct(PPDMDRVINS pDrvIns) { PDMDRV_CHECK_VERSIONS_RETURN_VOID(pDrvIns); LogFlowFuncEnter(); } /** * Constructs a PulseAudio Audio driver instance. * * @copydoc FNPDMDRVCONSTRUCT */ static DECLCALLBACK(int) drvHostPulseAudioConstruct(PPDMDRVINS pDrvIns, PCFGMNODE pCfg, uint32_t fFlags) { RT_NOREF(pCfg, fFlags); PDMDRV_CHECK_VERSIONS_RETURN(pDrvIns); AssertPtrReturn(pDrvIns, VERR_INVALID_POINTER); PDRVHOSTPULSEAUDIO pThis = PDMINS_2_DATA(pDrvIns, PDRVHOSTPULSEAUDIO); LogRel(("Audio: Initializing PulseAudio driver\n")); pThis->pDrvIns = pDrvIns; /* IBase */ pDrvIns->IBase.pfnQueryInterface = drvHostPulseAudioQueryInterface; /* IHostAudio */ PDMAUDIO_IHOSTAUDIO_CALLBACKS(drvHostPulseAudio); int rc2 = CFGMR3QueryString(pCfg, "StreamName", pThis->szStreamName, sizeof(pThis->szStreamName)); AssertMsgRCReturn(rc2, ("Confguration error: No/bad \"StreamName\" value, rc=%Rrc\n", rc2), rc2); return VINF_SUCCESS; } /** * Pulse audio driver registration record. */ const PDMDRVREG g_DrvHostPulseAudio = { /* u32Version */ PDM_DRVREG_VERSION, /* szName */ "PulseAudio", /* szRCMod */ "", /* szR0Mod */ "", /* pszDescription */ "Pulse Audio host driver", /* fFlags */ PDM_DRVREG_FLAGS_HOST_BITS_DEFAULT, /* fClass. */ PDM_DRVREG_CLASS_AUDIO, /* cMaxInstances */ ~0U, /* cbInstance */ sizeof(DRVHOSTPULSEAUDIO), /* pfnConstruct */ drvHostPulseAudioConstruct, /* pfnDestruct */ drvHostPulseAudioDestruct, /* pfnRelocate */ NULL, /* pfnIOCtl */ NULL, /* pfnPowerOn */ NULL, /* pfnReset */ NULL, /* pfnSuspend */ NULL, /* pfnResume */ NULL, /* pfnAttach */ NULL, /* pfnDetach */ NULL, /* pfnPowerOff */ NULL, /* pfnSoftReset */ NULL, /* u32EndVersion */ PDM_DRVREG_VERSION }; #if 0 /* unused */ static struct audio_option pulse_options[] = { {"DAC_MS", AUD_OPT_INT, &s_pulseCfg.buffer_msecs_out, "DAC period size in milliseconds", NULL, 0}, {"ADC_MS", AUD_OPT_INT, &s_pulseCfg.buffer_msecs_in, "ADC period size in milliseconds", NULL, 0} }; #endif