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WAV can also be read from RAR archive

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This commit is contained in:
chudov
2008-11-10 09:31:14 +00:00
parent e028a4d1e8
commit df34997334
3 changed files with 104 additions and 40 deletions
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45
AudioCodecsDotNet/AudioCodecsDotNet.cs
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@@ -251,7 +251,7 @@ namespace AudioCodecsDotNet
public class WAVReader : IAudioSource
{
FileStream _fs;
Stream _IO;
BinaryReader _br;
ulong _dataOffset, _dataLen;
ulong _samplePos, _sampleLen;
@@ -260,12 +260,11 @@ namespace AudioCodecsDotNet
string _path;
private byte[] _sampleBuffer;
public WAVReader(string path)
public WAVReader(string path, Stream IO)
{
_path = path;
//_fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read);
_fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, 0x10000, FileOptions.SequentialScan);
_br = new BinaryReader(_fs);
_IO = IO != null ? IO : new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, 0x10000, FileOptions.SequentialScan);
_br = new BinaryReader(_IO);
ParseHeaders();
@@ -275,10 +274,12 @@ namespace AudioCodecsDotNet
public void Close()
{
_br.Close();
_br = null;
_fs = null;
if (_br != null)
{
_br.Close();
_br = null;
}
_IO = null;
}
private void ParseHeaders()
@@ -310,7 +311,7 @@ namespace AudioCodecsDotNet
foundFormat = false;
foundData = false;
while (_fs.Position < fileEnd)
while (_IO.Position < fileEnd)
{
uint ckID, ckSize, ckSizePadded;
long ckEnd;
@@ -318,7 +319,7 @@ namespace AudioCodecsDotNet
ckID = _br.ReadUInt32();
ckSize = _br.ReadUInt32();
ckSizePadded = (ckSize + 1U) & ~1U;
ckEnd = _fs.Position + (long)ckSizePadded;
ckEnd = _IO.Position + (long)ckSizePadded;
if (ckID == fccFormat)
{
@@ -338,15 +339,15 @@ namespace AudioCodecsDotNet
{
foundData = true;
_dataOffset = (ulong)_fs.Position;
if (_fs.Length <= maxFileSize)
_dataOffset = (ulong)_IO.Position;
if (_IO.Length <= maxFileSize)
{
_dataLen = ckSize;
}
else
{
_largeFile = true;
_dataLen = ((ulong)_fs.Length) - _dataOffset;
_dataLen = ((ulong)_IO.Length) - _dataOffset;
}
}
@@ -355,7 +356,7 @@ namespace AudioCodecsDotNet
break;
}
_fs.Seek(ckEnd, SeekOrigin.Begin);
_IO.Seek(ckEnd, SeekOrigin.Begin);
}
if ((foundFormat & foundData) == false)
@@ -401,7 +402,7 @@ namespace AudioCodecsDotNet
}
seekPos = _dataOffset + (_samplePos * (uint)_blockAlign);
_fs.Seek((long)seekPos, SeekOrigin.Begin);
_IO.Seek((long)seekPos, SeekOrigin.Begin);
}
}
@@ -480,7 +481,7 @@ namespace AudioCodecsDotNet
int byteCount = (int) sampleCount * _blockAlign;
if (_sampleBuffer == null || _sampleBuffer.Length < byteCount)
_sampleBuffer = new byte[byteCount];
if (_fs.Read(_sampleBuffer, 0, (int)byteCount) != byteCount)
if (_IO.Read(_sampleBuffer, 0, (int)byteCount) != byteCount)
throw new Exception("Incomplete file read.");
AudioCodecsDotNet.BytesToFLACSamples_16 (_sampleBuffer, 0, buff, 0,
sampleCount, _channelCount);
@@ -493,7 +494,7 @@ namespace AudioCodecsDotNet
public class WAVWriter : IAudioDest
{
FileStream _fs;
FileStream _IO;
BinaryWriter _bw;
int _bitsPerSample, _channelCount, _sampleRate, _blockAlign;
long _sampleLen;
@@ -508,8 +509,8 @@ namespace AudioCodecsDotNet
_sampleRate = sampleRate;
_blockAlign = _channelCount * ((_bitsPerSample + 7) / 8);
_fs = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read);
_bw = new BinaryWriter(_fs);
_IO = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.Read);
_bw = new BinaryWriter(_IO);
WriteHeaders();
}
@@ -571,7 +572,7 @@ namespace AudioCodecsDotNet
_bw.Close();
_bw = null;
_fs = null;
_IO = null;
}
public long Position
@@ -597,7 +598,7 @@ namespace AudioCodecsDotNet
_sampleBuffer = new byte[sampleCount * _blockAlign];
AudioCodecsDotNet.FLACSamplesToBytes(buff, 0, _sampleBuffer, 0,
sampleCount, _channelCount, _bitsPerSample);
_fs.Write(_sampleBuffer, 0, (int)sampleCount * _blockAlign);
_IO.Write(_sampleBuffer, 0, (int)sampleCount * _blockAlign);
_sampleLen += sampleCount;
}