Merge "AudioFlinger: PatchPanel: prioritize quality vs latency for FM Bridge" am: d621f14f

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

    // 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(

                                           mPlayback.thread().get(),

                                           streamType,

                                           frameCount,

                                           tempRecordTrack->buffer(),

                                           tempRecordTrack->bufferSize(),

                                           outputFlags);

                                           outputFlags,

                                           {} /*timeout*/,

                                           frameCountToBeReady);

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

    if (status != NO_ERROR) {

        return status;