public void WriteAsync(int numberFrames, AudioBufferList data)
{
IntPtr buffer = data == null ? IntPtr.Zero : data.ToPointer ();
int err = ExtAudioFileWriteAsync(_extAudioFile, numberFrames, buffer);
// Try not to leak unmanaged pointer buffer
if (last_async_write_buffer_ptr != IntPtr.Zero) {
Marshal.FreeHGlobal (last_async_write_buffer_ptr);
last_async_write_buffer_ptr = IntPtr.Zero;
}
if (err != 0) {
if (buffer != IntPtr.Zero)
Marshal.FreeHGlobal (buffer);
throw new ArgumentException(String.Format("Error code:{0}", err));
}
if (buffer != IntPtr.Zero) {
last_async_write_buffer_ptr = buffer;
}
}
public int Read(int numberFrames, AudioBufferList data)
{
if (data == null)
throw new ArgumentNullException ("data");
var ptr = data.ToPointer ();
int err = ExtAudioFileRead(_extAudioFile, ref numberFrames, ptr);
Marshal.FreeHGlobal (ptr);
if (err != 0)
{
throw new ArgumentException(String.Format("Error code:{0}", err));
}
return numberFrames;
}