public override int Read(byte[] buffer, int offset, int count)
{
if (_decStream == null)
{
throw new Exception("Decoder stream is null");
}
if (offset < 0)
{
throw new ArgumentOutOfRangeException("offset", "Need non-negitive number");
}
if (count < 0)
{
throw new ArgumentOutOfRangeException("count", "Need non-negitive number");
}
if (buffer.Length - offset < count)
{
throw new ArgumentException("Invalid offset and length");
}
int startOffset = offset;
while (count > 0)
{
if (_currentStream == _streamsBytes.Length)
{
// EOF
break;
}
int toRead;
if (_streamSkipBytes[_currentStream] != 0)
{
byte[] skipBytes = new byte[_streamSkipBytes[_currentStream] < 0x8000 ? _streamSkipBytes[_currentStream] : 0x8000];
while (_streamSkipBytes[_currentStream] > 0)
{
toRead = _streamSkipBytes[_currentStream] < skipBytes.Length ? _streamSkipBytes[_currentStream] : skipBytes.Length;
if (_decStream.Read(skipBytes, 0, toRead) != toRead)
{
throw new Exception("Bad stream, read unexcepted amount of samples");
}
_streamSkipBytes[_currentStream] -= toRead;
}
}
toRead = (count < _streamsBytes[_currentStream]) ? count : _streamsBytes[_currentStream];
if (_decStream.Read(buffer, offset, toRead) != toRead)
{
throw new Exception("Bad stream, read unexcepted amount of samples");
}
_streamsBytes[_currentStream] -= toRead;
count -= toRead;
offset += toRead;
if (_streamsBytes[_currentStream] == 0)
{
// empty the current stream
byte[] skipBytes = new byte[0x8000];
while (_decStream.Read(skipBytes, 0, skipBytes.Length) != 0)
{
;
}
++_currentStream;
_rawStream.NextStream();
}
}
return(offset - startOffset);
}