private Stream LoadChunks(EriFile erif)
{
uint current_sample = 0;
List <MioChunk> chunks = new List <MioChunk>();
try
{
erif.BaseStream.Position = m_stream_pos;
for (;;)
{
long chunk_length = erif.FindSection("SoundStm");
if (chunk_length > int.MaxValue)
{
throw new FileSizeException();
}
var chunk = new MioChunk();
chunk.FirstSample = current_sample;
chunk.Version = erif.ReadByte();
chunk.Flags = erif.ReadByte();
erif.ReadInt16();
chunk.SampleCount = erif.ReadUInt32();
chunk.Position = erif.BaseStream.Position;
chunk.Size = (uint)(chunk_length - 8);
current_sample += chunk.SampleCount;
chunks.Add(chunk);
erif.BaseStream.Seek(chunk.Size, SeekOrigin.Current);
}
}
catch (EndOfStreamException) { /* ignore EOF errors */ }
m_total_samples = current_sample;
if (0 == m_total_samples)
{
m_decode_finished = true;
return(Stream.Null);
}
uint sample_bytes = (uint)ChannelCount * BitsPerSample / 8;
var total_bytes = m_total_samples * sample_bytes;
m_wait_handles = new WaitHandle[2] {
m_available_chunk, m_decode_complete
};
m_chunk_queue = new ConcurrentQueue <byte[]>();
m_worker = new BackgroundWorker();
m_worker.WorkerSupportsCancellation = true;
m_worker.DoWork += DoWork_Decode;
m_worker.RunWorkerAsync(chunks);
return(new MemoryStream((int)total_bytes));
}
public ChunkStream(Stream source, MioChunk chunk) : base(source, true)
{
m_chunk = chunk;
BaseStream.Position = m_chunk.Position;
}
public ChunkStream(Stream source, MioChunk chunk)
{
m_source = source;
m_chunk = chunk;
m_source.Position = m_chunk.Position;
}
