ProcessData
virtual status_t ProcessData(const void* input, size_t inputSize,
ProcessData(packet->Data(), packet->Size(), fLastEndTime, delta);
void ProcessData(const void *data, int size, bigtime_t start_time, bigtime_t delta);
status_t error = ProcessData(fBuffer + fBufferOffset, fBufferSize,
status_t error = ProcessData(input, bytesRemaining,