Merge "AudioPolicy: enable apps to mute BLUETOOTH_SCO" am: dac49ac4 am: 9437a062

                                                  audio_devices_t device)

{

    // VOICE_CALL stream has minVolumeIndex > 0  but can be muted directly by an

    // app that has MODIFY_PHONE_STATE permission.

    // VOICE_CALL and BLUETOOTH_SCO stream have minVolumeIndex > 0 but

    // can be muted directly by an app that has MODIFY_PHONE_STATE permission.

    if (((index < mVolumeCurves->getVolumeIndexMin(stream)) &&

            !(stream == AUDIO_STREAM_VOICE_CALL && index == 0)) ||

            !((stream == AUDIO_STREAM_VOICE_CALL || stream == AUDIO_STREAM_BLUETOOTH_SCO) &&

            index == 0)) ||

            (index > mVolumeCurves->getVolumeIndexMax(stream))) {

        return BAD_VALUE;

    }