Merge "Reject sample rate changes for fast tracks"

status_t AudioTrack::setSampleRate(uint32_t rate)

{

    if (mIsTimed || isOffloadedOrDirect()) {

    AutoMutex lock(mLock);

    if (rate == mSampleRate) {

        return NO_ERROR;

    }

    if (mIsTimed || isOffloadedOrDirect_l() || (mFlags & AUDIO_OUTPUT_FLAG_FAST)) {

        return INVALID_OPERATION;

    }

    AutoMutex lock(mLock);

    if (mOutput == AUDIO_IO_HANDLE_NONE) {

        return NO_INIT;

    }

    // NOTE: it is theoretically possible, but highly unlikely, that a device change

    // could mean a previously allowed sampling rate is no longer allowed.

    uint32_t afSamplingRate;

    if (AudioSystem::getSamplingRate(mOutput, &afSamplingRate) != NO_ERROR) {

        return NO_INIT;