void InitializeMemory(string path)
{
this.WaveForm = RiffForm.Load(path);
this.wformat = RiffUtil.ToNAudio(this.WaveForm.Cks.ckFmt);
sampleData_ChunkLength = this.WaveForm["data"].ckLength;
SampleData_SampleCount = SampleData_ChunkLength / WaveFormat.Channels;
sampleData_DataStart = RiffUtil.FindSampleStart(this.WaveForm);
RawWaveData = new byte[sampleData_ChunkLength];
using (waveFileInputStream = new FileStream(
this.FilePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
waveFileInputStream.Seek(sampleData_DataStart, SeekOrigin.Begin);
waveFileInputStream.Read(RawWaveData, /*sampleData_DataStart*/ 0, SampleData_ChunkLength);
}
}
override public int Read(byte[] b, int position, int length)
{
int ToRead = RiffUtil.BytesToRead(this, lastReadOffset, length), BytesReturned = 0;
if (Status == BufferStatus.Finished || ToRead == 0)
{
this.OnEndOfTrack();
lastReadOffset = 0;
return(lastReadOffset);
}
Debug.Print(
"status: {4}, offset: {0}, length: {1}, toread: {2}, of: {3}",
lastReadOffset, length, ToRead, SampleData_ChunkLength, Status
);
if (ToRead == 0)
{
Status = BufferStatus.Finished;
return(BytesReturned);
}
else
{
using (MemoryStream memory = new MemoryStream(RawWaveData))
{
memory.Seek(lastReadOffset, SeekOrigin.Begin);
lastReadOffset += BytesReturned = memory.Read(b, 0, ToRead);
memory.Close();
}
}
if (Status == BufferStatus.LastPage)
{
Status = BufferStatus.Finished;
}
return(BytesReturned);
}