public OggVorbisEncodedStream(byte[] buffer)
{
//this.buffer = buffer;
rawStream = new MemoryStream(buffer);
//Open
file = new NativeOggVorbisFile();
NativeCallbacks callbacks = new NativeCallbacks();
callbacks.ReadFunction = new ReadFunctionDelegate(this.RawStreamRead);
callbacks.TellFunction = new TellFunctionDelegate(this.RawStreamTell);
callbacks.SeekFunction = new SeekFunctionDelegate(this.RawStreamSeek);
int result = 0;
if ((result = OggVorbisFile.NativeOpenCallbacks(buffer, file, IntPtr.Zero, 0, callbacks)) != 0)
{
throw new OggVorbisException(String.Format("Error {0} during open", result));
}
//Get info
info = new VorbisInfo(OggVorbisFile.NativeGetInfo(file, -1));
//Get lengths of the stream
pcmLength = OggVorbisFile.NativeGetLength(file, -1); // -1 to entire bitstream
rawLength = OggVorbisFile.NativeGetRawLength(file, -1); // -1 to entire bitstream
duration = OggVorbisFile.NativeGetDuration(file, -1); // -1 to entire bitstream
//Update info
info.Duration = duration;
}
public override void Close()
{
base.Close();
if (file != null)
{
OggVorbisFile.NativeClear(file);
}
}
public override int Read(byte[] buffer, int offset, int length)
{
unsafe
{
fixed(byte *bp = buffer)
{
//init and set initial pointer position
int size = 0;
int result = 0;
byte *bufferPos = bp + offset;
while (size < length)
{
bufferPos = bp + offset + size; // going to the correct buffer position
result = OggVorbisFile.NativeRead(file, bufferPos, length - size, 0, 2, 1, IntPtr.Zero);
if (result > 0)
{
size += result;
}
else if (result == 0)
{
break;
}
else //if (result < 0)
{
if (result == -1)
{
throw new OggVorbisException("The initial file headers couldn't be read or are corrupt, or that the initial open call for vf failed.");
}
if (result == -2)
{
throw new OggVorbisException("An invalid stream section was supplied to libvorbisfile, or the requested link is corrupt.");
}
if (result == -3)
{
throw new OggVorbisException("There was an interruption in the data. (one of: garbage between pages, loss of sync followed by recapture, or a corrupt page)");
}
else
{
throw new OggVorbisException("Unknown OggVorbis error: " + result);
}
}
}
return(result);
}
}
}
public OggVorbisFileStream(string filename)
{
//Open File
file = new NativeOggVorbisFile();
//if (ov_open(stream.SafeFileHandle, ref vf, IntPtr.Zero,0) == 0)
// fopen for Win32!
if (OggVorbisFile.NativeFOpen(filename, file) != 0)
{
throw new OggVorbisException("Error during fopen");
}
//Get info
info = new VorbisInfo(OggVorbisFile.NativeGetInfo(file, -1));
//Get lengths of the stream
pcmLength = OggVorbisFile.NativeGetLength(file, -1); // -1 to entire bitstream
rawLength = OggVorbisFile.NativeGetRawLength(file, -1); // -1 to entire bitstream
duration = OggVorbisFile.NativeGetDuration(file, -1); // -1 to entire bitstream
//Update info
info.Duration = duration;
}
public virtual int SeekTime(double time)
{
return(OggVorbisFile.NativeSeekTime(file, time));
}
public override long Seek(long offset, SeekOrigin origin)
{
// Using this because it's the fastest seek method possible (with crosslap)
OggVorbisFile.NativeSeek(file, offset);
return(file.PcmOffset);
}
