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Commit d621f14f authored by Eric Laurent's avatar Eric Laurent Committed by Gerrit Code Review
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Merge "AudioFlinger: PatchPanel: prioritize quality vs latency for FM Bridge"

parents 5762c467 a0fd4c72

services/audioflinger/PatchPanel.cpp

+9 −1
Original line number Original line Diff line number Diff line
@@ -573,6 +573,12 @@ status_t AudioFlinger::PatchPanel::Patch::createConnections(PatchPanel *panel) 




    // create a special playback track to render to playback thread.

    // create a special playback track to render to playback thread.

    // this track is given the same buffer as the PatchRecord buffer

    // this track is given the same buffer as the PatchRecord buffer



    // Default behaviour is to start as soon as possible to have the lowest possible latency even if

    // it might glitch.

    // Disable this behavior for FM Tuner source if no fast capture/mixer available.

    const bool isFmBridge = mAudioPatch.sources[0].ext.device.type == AUDIO_DEVICE_IN_FM_TUNER;

    const size_t frameCountToBeReady = isFmBridge && !usePassthruPatchRecord ? frameCount / 4 : 1;

    sp<PlaybackThread::PatchTrack> tempPatchTrack = new PlaybackThread::PatchTrack(

    sp<PlaybackThread::PatchTrack> tempPatchTrack = new PlaybackThread::PatchTrack(

                                           mPlayback.thread().get(),

                                           mPlayback.thread().get(),

                                           streamType,

                                           streamType,
@@ -582,7 +588,9 @@ status_t AudioFlinger::PatchPanel::Patch::createConnections(PatchPanel *panel) 
                                           frameCount,

                                           frameCount,

                                           tempRecordTrack->buffer(),

                                           tempRecordTrack->buffer(),

                                           tempRecordTrack->bufferSize(),

                                           tempRecordTrack->bufferSize(),

                                           outputFlags);

                                           outputFlags,

                                           {} /*timeout*/,

                                           frameCountToBeReady);

    status = mPlayback.checkTrack(tempPatchTrack.get());

    status = mPlayback.checkTrack(tempPatchTrack.get());

    if (status != NO_ERROR) {

    if (status != NO_ERROR) {

        return status;

        return status;