Merge "Fix issue 2305382: Pick up original call makes a noisy beep when wired headset connected."

    if (oldState == AudioSystem::MODE_IN_CALL && newDevice == 0) {

        newDevice = hwOutputDesc->device();

    }

    // when changing from ring tone to in call mode, mute the ringing tone

    // immediately and delay the route change to avoid sending the ring tone

    // tail into the earpiece or headset.

    int delayMs = 0;

    if (state == AudioSystem::MODE_IN_CALL && oldState == AudioSystem::MODE_RINGTONE) {

        // delay the device change command by twice the output latency to have some margin

        // and be sure that audio buffers not yet affected by the mute are out when

        // we actually apply the route change

        delayMs = hwOutputDesc->mLatency*2;

        setStreamMute(AudioSystem::RING, true, mHardwareOutput);

    }

    // change routing is necessary

    setOutputDevice(mHardwareOutput, newDevice, force);

    setOutputDevice(mHardwareOutput, newDevice, force, delayMs);

    // if entering in call state, handle special case of active streams

    // pertaining to sonification strategy see handleIncallSonification()

    if (state == AudioSystem::MODE_IN_CALL) {

        LOGV("setPhoneState() in call state management: new state is %d", state);

        // unmute the ringing tone after a sufficient delay if it was muted before

        // setting output device above

        if (oldState == AudioSystem::MODE_RINGTONE) {

            setStreamMute(AudioSystem::RING, false, mHardwareOutput, MUTE_TIME_MS);

        }

        for (int stream = 0; stream < AudioSystem::NUM_STREAM_TYPES; stream++) {

            handleIncallSonification(stream, true, true);

        }

        return INVALID_OPERATION;

    }

    // mute media during 2 seconds to avoid outputing sound on hardware output while music stream

    // mute media strategy to avoid outputting sound on hardware output while music stream

    // is switched from A2DP output and before music is paused by music application

    setStrategyMute(STRATEGY_MEDIA, true, mHardwareOutput);

    setStrategyMute(STRATEGY_MEDIA, false, mHardwareOutput, 2000);

    setStrategyMute(STRATEGY_MEDIA, false, mHardwareOutput, MUTE_TIME_MS);

    if (!a2dpUsedForSonification()) {

        // unmute music on A2DP output if a notification or ringtone is playing