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(MioInput): perform decoding in separate thread.

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This commit is contained in:
morkt 2015-05-29 22:54:16 +04:00
parent d95b0d8bbd
commit 31b114f7a4
1 changed files with 112 additions and 19 deletions
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131
ArcFormats/AudioMIO.cs
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@ -24,10 +24,13 @@
//
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.Composition;
using System.Diagnostics;
using System.IO;
using System.Threading;
using GameRes.Utility;
namespace GameRes.Formats.Entis
@ -68,10 +71,10 @@ namespace GameRes.Formats.Entis
public uint BitsPerSample { get { return m_info.BitsPerSample; } }
public override int SourceBitrate { get { return m_bitrate; } }
public override string SourceFormat { get { return "raw"; } }
public override string SourceFormat { get { return "mio"; } }
#region Stream Members
public override bool CanSeek { get { return Source.CanSeek; } }
public override bool CanSeek { get { return m_decoded_stream.CanSeek; } }
public override long Position
{
@ -81,7 +84,7 @@ namespace GameRes.Formats.Entis
public override int Read (byte[] buffer, int offset, int count)
{
return m_decoded_stream.Read (buffer, offset, count);
return Read_Threaded (buffer, offset, count);
}
#endregion
@ -131,22 +134,22 @@ namespace GameRes.Formats.Entis
if (EriCode.Nemesis != m_info.Architecture)
m_pmioc = new HuffmanDecodeContext (0x10000);
else
throw new NotImplementedException ("Nemesis encoding not implemented");
throw new NotImplementedException ("MIO Nemesis encoding not implemented");
int pcm_bitrate = (int)m_info.SamplesPerSec * 16 * m_info.ChannelCount;
int pcm_bitrate = (int)m_info.SamplesPerSec * 16 * ChannelCount;
var format = new GameRes.WaveFormat();
format.FormatTag = 1;
format.Channels = (ushort)m_info.ChannelCount;
format.Channels = (ushort)ChannelCount;
format.SamplesPerSecond = m_info.SamplesPerSec;
format.BitsPerSample = (ushort)m_info.BitsPerSample;
format.BlockAlign = (ushort)(m_info.BitsPerSample/8*format.Channels);
format.BitsPerSample = (ushort)BitsPerSample;
format.BlockAlign = (ushort)(BitsPerSample/8*format.Channels);
format.AverageBytesPerSecond = (uint)pcm_bitrate/8;
this.Format = format;
m_decoded_stream = LoadChunks();
if (0 != m_total_samples)
m_bitrate = (int)(stream_size * 8 * m_info.SamplesPerSec / m_total_samples);
this.PcmSize = m_decoded_stream.Length;
this.PcmSize = m_total_samples * ChannelCount * BitsPerSample / 8;
m_decoded_stream.Position = 0;
}
catch
@ -259,24 +262,107 @@ namespace GameRes.Formats.Entis
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;
var wave_buf = new byte[total_bytes];
int current_pos = 0;
foreach (var chunk in chunks)
m_wait_handles = new WaitHandle[2] { m_available_chunk, m_decode_complete };
m_worker.WorkerSupportsCancellation = true;
m_worker.DoWork += DoWork_Decode;
m_worker.RunWorkerAsync (chunks);
return new MemoryStream ((int)total_bytes);
}
bool m_decode_finished = false;
AutoResetEvent m_decode_complete = new AutoResetEvent (false);
AutoResetEvent m_available_chunk = new AutoResetEvent (false);
WaitHandle[] m_wait_handles;
ConcurrentQueue<byte[]> m_chunk_queue = new ConcurrentQueue<byte[]>();
BackgroundWorker m_worker = new BackgroundWorker();
Exception m_decode_error = null;
private void DoWork_Decode (object sender, DoWorkEventArgs e)
{
try
{
using (var input = new ChunkStream (Source, chunk))
var worker = sender as BackgroundWorker;
var chunks = e.Argument as IEnumerable<MioChunk>;
uint sample_bytes = (uint)ChannelCount * BitsPerSample / 8;
foreach (var chunk in chunks)
{
m_pmioc.AttachInputFile (input);
if (!m_pmiod.DecodeSound (m_pmioc, chunk, wave_buf, current_pos))
throw new InvalidFormatException();
current_pos += (int)(chunk.SampleCount * sample_bytes);
if (worker.CancellationPending)
{
e.Cancel = true;
break;
}
using (var input = new ChunkStream (Source, chunk))
{
var wave_buf = new byte[chunk.SampleCount * sample_bytes];
m_pmioc.AttachInputFile (input);
if (!m_pmiod.DecodeSound (m_pmioc, chunk, wave_buf, 0))
throw new InvalidFormatException();
m_chunk_queue.Enqueue (wave_buf);
m_available_chunk.Set();
}
}
}
return new MemoryStream (wave_buf);
catch (Exception X)
{
Trace.WriteLine (X.Message, "[MIO]");
m_decode_error = X;
}
finally
{
m_decode_complete.Set();
}
}
private int Read_Threaded (byte[] buf, int idx, int count)
{
var current_pos = Position;
int total_read = 0;
if (current_pos < m_decoded_stream.Length)
{
int available_bytes = (int)(m_decoded_stream.Length - current_pos);
int read = m_decoded_stream.Read (buf, idx, Math.Min (count, available_bytes));
idx += read;
count -= read;
total_read += read;
}
if (count > 0 && (!m_decode_finished || m_chunk_queue.Count > 0))
{
current_pos = Position;
m_decoded_stream.Seek (0, SeekOrigin.End);
for (;;)
{
byte[] wave_buf = null;
while (m_chunk_queue.TryDequeue (out wave_buf))
{
m_decoded_stream.Write (wave_buf, 0, wave_buf.Length);
if (current_pos + count <= m_decoded_stream.Length)
break;
}
if (m_decode_finished || (current_pos + count <= m_decoded_stream.Length))
break;
int evt = WaitHandle.WaitAny (m_wait_handles);
if (1 == evt)
{
m_decode_finished = true;
if (m_decode_error != null)
{
m_decoded_stream.Position = current_pos;
throw m_decode_error;
}
}
}
m_decoded_stream.Position = current_pos;
total_read += m_decoded_stream.Read (buf, idx, count);
}
return total_read;
}
#region IDisposable Members
@ -286,9 +372,16 @@ namespace GameRes.Formats.Entis
{
if (disposing)
{
if (!m_decode_finished)
{
m_worker.CancelAsync();
m_decode_complete.WaitOne();
}
m_erif.Dispose();
if (m_decoded_stream != null)
m_decoded_stream.Dispose();
m_decode_complete.Dispose();
m_available_chunk.Dispose();
}
m_erif = null;
base.Dispose (disposing);