Merge "Camera API1: Fix ZSLProcessor3 deadlock" into lmp-dev

}

void ZslProcessor3::onBufferReleased(const BufferInfo& bufferInfo) {

    Mutex::Autolock l(mInputMutex);

    // ignore output buffers

    if (bufferInfo.mOutput) {

        return;

    }

    // Lock mutex only once we know this is an input buffer returned to avoid

    // potential deadlock

    Mutex::Autolock l(mInputMutex);

    // TODO: Verify that the buffer is in our queue by looking at timestamp

    // theoretically unnecessary unless we change the following assumptions:

    // -- only 1 buffer reprocessed at a time (which is the case now)