diff options
Diffstat (limited to 'src/VBox/Devices/Audio/DevHdaStream.cpp')
| -rw-r--r-- | src/VBox/Devices/Audio/DevHdaStream.cpp | 60 |
1 files changed, 36 insertions, 24 deletions
diff --git a/src/VBox/Devices/Audio/DevHdaStream.cpp b/src/VBox/Devices/Audio/DevHdaStream.cpp index aa6b0535..9bb27a4a 100644 --- a/src/VBox/Devices/Audio/DevHdaStream.cpp +++ b/src/VBox/Devices/Audio/DevHdaStream.cpp @@ -797,18 +797,6 @@ int hdaR3StreamSetUp(PPDMDEVINS pDevIns, PHDASTATE pThis, PHDASTREAM pStreamShar * Set up internal ring buffer. */ - /* (Re-)Allocate the stream's internal DMA buffer, - * based on the timing *and* PCM properties we just got above. */ - if (pStreamR3->State.pCircBuf) - { - RTCircBufDestroy(pStreamR3->State.pCircBuf); - pStreamR3->State.pCircBuf = NULL; - pStreamR3->State.StatDmaBufSize = 0; - pStreamR3->State.StatDmaBufUsed = 0; - } - pStreamShared->State.offWrite = 0; - pStreamShared->State.offRead = 0; - /* * The default internal ring buffer size must be: * @@ -857,16 +845,37 @@ int hdaR3StreamSetUp(PPDMDEVINS pDevIns, PHDASTATE pThis, PHDASTREAM pStreamShar rc = VERR_INVALID_PARAMETER); if (RT_SUCCESS(rc)) { - rc = RTCircBufCreate(&pStreamR3->State.pCircBuf, cbCircBuf); - if (RT_SUCCESS(rc)) + /** + * Note: Only re-create the DMA buffer if the size actually has changed. + * + * Otherwise do *not* reset the stream's circular buffer here, as the audio mixer still relies on + * previously announced DMA data (via AudioMixerSinkDrainAndStop()) and processes it asynchronously. + * Resetting the buffer here will cause a race condition. See @bugref{10354}. */ + if (pStreamR3->State.StatDmaBufSize != cbCircBuf) { - pStreamR3->State.StatDmaBufSize = cbCircBuf; + /* (Re-)Allocate the stream's internal DMA buffer, + * based on the timing *and* PCM properties we just got above. */ + if (pStreamR3->State.pCircBuf) + { + RTCircBufDestroy(pStreamR3->State.pCircBuf); + pStreamR3->State.pCircBuf = NULL; + pStreamR3->State.StatDmaBufSize = 0; + pStreamR3->State.StatDmaBufUsed = 0; + } + pStreamShared->State.offWrite = 0; + pStreamShared->State.offRead = 0; - /* - * Forward the timer frequency hint to TM as well for better accuracy on - * systems w/o preemption timers (also good for 'info timers'). - */ - PDMDevHlpTimerSetFrequencyHint(pDevIns, pStreamShared->hTimer, uTransferHz); + rc = RTCircBufCreate(&pStreamR3->State.pCircBuf, cbCircBuf); + if (RT_SUCCESS(rc)) + { + pStreamR3->State.StatDmaBufSize = cbCircBuf; + + /* + * Forward the timer frequency hint to TM as well for better accuracy on + * systems w/o preemption timers (also good for 'info timers'). + */ + PDMDevHlpTimerSetFrequencyHint(pDevIns, pStreamShared->hTimer, uTransferHz); + } } } @@ -1003,10 +1012,9 @@ void hdaR3StreamReset(PHDASTATE pThis, PHDASTATER3 pThisCC, PHDASTREAM pStreamSh pStreamShared->State.idxScheduleLoop = 0; pStreamShared->State.fInputPreBuffered = false; - if (pStreamR3->State.pCircBuf) - RTCircBufReset(pStreamR3->State.pCircBuf); - pStreamShared->State.offWrite = 0; - pStreamShared->State.offRead = 0; + /* Note: Do *not* reset the stream's circular buffer here, as the audio mixer still relies on + * previously announced DMA data (via AudioMixerSinkDrainAndStop()) and processes it asynchronously. + * Resetting the buffer here will cause a race condition. See @bugref{10354}. */ /* Report that we're done resetting this stream. */ HDA_STREAM_REG(pThis, CTL, uSD) = 0; @@ -1041,6 +1049,8 @@ int hdaR3StreamEnable(PHDASTATE pThis, PHDASTREAM pStreamShared, PHDASTREAMR3 pS PAUDMIXSINK const pSink = pStreamR3->pMixSink ? pStreamR3->pMixSink->pMixSink : NULL; if (pSink) { + AudioMixerSinkLock(pSink); + if (fEnable) { if (pStreamR3->State.pAioRegSink != pSink) @@ -1060,6 +1070,8 @@ int hdaR3StreamEnable(PHDASTATE pThis, PHDASTREAM pStreamShared, PHDASTREAMR3 pS else rc = AudioMixerSinkDrainAndStop(pSink, pStreamR3->State.pCircBuf ? (uint32_t)RTCircBufUsed(pStreamR3->State.pCircBuf) : 0); + + AudioMixerSinkUnlock(pSink); } if ( RT_SUCCESS(rc) && fEnable |