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LossyWAV support

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This commit is contained in:
chudov
2008-11-21 20:06:11 +00:00
parent b7b78afa8a
commit 478f92236d
19 changed files with 4110 additions and 3223 deletions
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52
AudioCodecsDotNet/AudioCodecsDotNet.cs
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@@ -27,6 +27,7 @@ namespace AudioCodecsDotNet
void Close();
void Delete();
long FinalSampleCount { set; }
long BlockSize { set; }
string Path { get; }
}
@@ -148,9 +149,12 @@ namespace AudioCodecsDotNet
public long FinalSampleCount
{
set
{
}
set { }
}
public long BlockSize
{
set { }
}
public void Write(int[,] buff, uint sampleCount)
@@ -505,6 +509,7 @@ namespace AudioCodecsDotNet
long _sampleLen;
string _path;
private byte[] _sampleBuffer;
long hdrLen = 44;
public WAVWriter(string path, int bitsPerSample, int channelCount, int sampleRate)
{
@@ -525,6 +530,22 @@ namespace AudioCodecsDotNet
return false;
}
public void WriteChunk(uint fcc, byte[] data)
{
if (_sampleLen > 0)
throw new Exception("data already written, no chunks allowed");
const uint fccData = 0x61746164;
_bw.Seek((int)hdrLen - 8, SeekOrigin.Begin);
_bw.Write(fcc);
_bw.Write((uint)data.Length);
_bw.Write(data);
if ((data.Length & 1) != 0)
_bw.Write((byte) 0);
_bw.Write(fccData);
_bw.Write((uint)0);
hdrLen += data.Length + (data.Length & 1) + 8;
}
private void WriteHeaders()
{
const uint fccRIFF = 0x46464952;
@@ -552,26 +573,22 @@ namespace AudioCodecsDotNet
public void Close()
{
const long maxFileSize = 0x7FFFFFFEL;
long dataLen, dataLenPadded;
long dataLen, dataLenPadded;
dataLen = _sampleLen * _blockAlign;
if ((dataLen & 1) == 1)
{
_bw.Write((byte)0);
}
if ((dataLen + 44) > maxFileSize)
{
dataLen = ((maxFileSize - 44) / _blockAlign) * _blockAlign;
}
if (dataLen + hdrLen > maxFileSize)
dataLen = ((maxFileSize - hdrLen) / _blockAlign) * _blockAlign;
dataLenPadded = ((dataLen & 1) == 1) ? (dataLen + 1) : dataLen;
dataLenPadded = dataLen + (dataLen & 1);
_bw.Seek(4, SeekOrigin.Begin);
_bw.Write((uint)(dataLenPadded + 36));
_bw.Write((uint)(dataLenPadded + hdrLen - 8));
_bw.Seek(40, SeekOrigin.Begin);
_bw.Seek((int)hdrLen-4, SeekOrigin.Begin);
_bw.Write((uint)dataLen);
_bw.Close();
@@ -598,9 +615,12 @@ namespace AudioCodecsDotNet
public long FinalSampleCount
{
set
{
}
set { }
}
public long BlockSize
{
set { }
}
public void Write(int[,] buff, uint sampleCount)