SDL FLAC experiment

// invoked from SDL audio thread to fill buffer with more samples
size_t Flac::getData(size_t len, void *buf)
{
   bool success = true;
   while (success && !enoughSamples() && moreDataAvailable())
      success = decoder->process_single()
   // Now copy data from Flac buffers to buf, keeping any overflow for
   // next time. If we got less than requested, return the truncated
   // count.
}

::FLAC__StreamDecoderWriteStatus FlacDecoder::write_callback(const ::FLAC__Frame *frame, const FLAC__int32 *const buffer[])
{
   // copy the decoded data into our Flac buffer for its SDL callback
   // to fetch and update the count and moreDataAvailable flag


   return ::FLAC__StreamDecoderWriteStatus();
}

// cache the Flac object here for use by the callback

FlacDecoder(TagLib::String path, Flac& flac_) : FLAC::Decoder::File(), flac(flac_), m_path(path) { }