/// <summary>
/// Reads a sequence of bytes from the <see cref="FlacFile" /> and advances the position within the stream by the
/// number of bytes read.
/// </summary>
/// <param name="buffer">
/// An array of bytes. When this method returns, the <paramref name="buffer" /> contains the specified
/// byte array with the values between <paramref name="offset" /> and (<paramref name="offset" /> +
/// <paramref name="count" /> - 1) replaced by the bytes read from the current source.
/// </param>
/// <param name="offset">
/// The zero-based byte offset in the <paramref name="buffer" /> at which to begin storing the data
/// read from the current stream.
/// </param>
/// <param name="count">The maximum number of bytes to read from the current source.</param>
/// <returns>The total number of bytes read into the buffer.</returns>
public int Read(byte[] buffer, int offset, int count)
{
CheckForDisposed();
int read = 0;
count -= (count % WaveFormat.BlockAlign);
lock (_bufferLock)
{
read += GetOverflows(buffer, ref offset, count);
while (read < count)
{
FlacFrame frame = Frame;
if (frame == null)
{
return(read);
}
while (!frame.NextFrame())
{
if (CanSeek) //go to next frame
{
if (++_frameIndex >= _scan.Frames.Count)
{
return(read);
}
_stream.Position = _scan.Frames[_frameIndex].StreamOffset;
}
}
_frameIndex++;
int bufferlength = frame.GetBuffer(ref _overflowBuffer);
int bytesToCopy = Math.Min(count - read, bufferlength);
Array.Copy(_overflowBuffer, 0, buffer, offset, bytesToCopy);
read += bytesToCopy;
offset += bytesToCopy;
_overflowCount = ((bufferlength > bytesToCopy) ? (bufferlength - bytesToCopy) : 0);
_overflowOffset = ((bufferlength > bytesToCopy) ? (bytesToCopy) : 0);
}
}
#if DIAGNOSTICS
_position += read;
#endif
return(read);
}
