public void Dispose()
{
if (_decoder != null)
_decoder.Dispose();
if (_encoder != null)
_encoder.Dispose();
_decoder = null;
_encoder = null;
}
public VoipCodecOpus(int sampleRate, int bitrate, string description, VoipCodecMode mode = VoipCodecMode.Both)
{
_bitrate = bitrate;
_segmentLength = sampleRate / 25;// 2 bytes per sample, 20ms per segment
_recordingFormat = new WaveFormat(sampleRate, 16, 1);
_description = description;
if (mode.HasFlag(VoipCodecMode.Decode))
_decoder = OpusDecoder.Create(sampleRate, 1);
if (mode.HasFlag(VoipCodecMode.Encode))
{
_encoder = OpusEncoder.Create(sampleRate, 1, OpusAPI.Application.Voip);
// 16kHz sample rate is 32kB/s raw.
// Compressed bitrates:
// 32768 is 4kB/s
// 24800 is 3kB/s (3100B/s, same as Speex 16kHz)
// 8192 is 1kB/s
_encoder.Bitrate = bitrate;
_encoderInputBuffer = new byte[_recordingFormat.AverageBytesPerSecond]; // more than enough
}
}
