public OpusCodec(int samplerate, int channels, VoiceApplication application)
{
if (!AllowedSampleRates.Contains(samplerate))
{
throw new ArgumentOutOfRangeException(nameof(samplerate), string.Concat("Sample rate must be one of ", string.Join(", ", AllowedSampleRates)));
}
if (!AllowedChannelCounts.Contains(channels))
{
throw new ArgumentOutOfRangeException(nameof(channels), string.Concat("Channel count must be one of ", string.Join(", ", AllowedChannelCounts)));
}
this.SampleRate = samplerate;
this.Channels = channels;
this.Application = application;
var err = OpusError.OPUS_OK;
this.Encoder = CreateEncoder(this.SampleRate, this.Channels, (int)this.Application, out err);
this.Errors = err;
if (this.Errors != OpusError.OPUS_OK)
{
throw new Exception(this.Errors.ToString());
}
}
public OpusCodec(int sampleRate, int channels, VoiceApplication application)
{
if (!AllowedSampleRates.Contains(sampleRate))
{
throw new ArgumentOutOfRangeException(nameof(sampleRate), string.Concat("Sample rate must be one of ", string.Join(", ", AllowedSampleRates)));
}
if (!AllowedChannelCounts.Contains(channels))
{
throw new ArgumentOutOfRangeException(nameof(channels), string.Concat("Channel count must be one of ", string.Join(", ", AllowedChannelCounts)));
}
this.SampleRate = sampleRate;
this.Channels = channels;
this.Application = application;
this.Encoder = CreateEncoder(this.SampleRate, this.Channels, (int)this.Application, out var err);
this.CheckForError(err);
var sig = OpusSignal.Auto;
switch (application)
{
case VoiceApplication.Music:
sig = OpusSignal.Music;
break;
case VoiceApplication.Voice:
sig = OpusSignal.Voice;
break;
}
err = EncoderControl(this.Encoder, OpusControl.SetSignal, (int)sig);
this.CheckForError(err);
err = EncoderControl(this.Encoder, OpusControl.SetPacketLossPercent, 15);
this.CheckForError(err);
err = EncoderControl(this.Encoder, OpusControl.SetInBandFec, 1);
this.CheckForError(err);
err = EncoderControl(this.Encoder, OpusControl.SetBitrate, 131072);
this.CheckForError(err);
#if !NETSTANDARD1_1
this.Decoder = CreateDecoder(this.SampleRate, this.Channels, out err);
this.CheckForError(err);
#endif
}
/// <summary>
/// Creates a new audio format for use with Opus encoder.
/// </summary>
/// <param name="sampleRate">Audio sampling rate in Hz.</param>
/// <param name="channelCount">Number of audio channels in the data.</param>
/// <param name="voiceApplication">Encoder preset to use.</param>
public AudioFormat(int sampleRate = 48000, int channelCount = 2, VoiceApplication voiceApplication = VoiceApplication.Music)
{
if (!AllowedSampleRates.Contains(sampleRate))
{
throw new ArgumentOutOfRangeException(nameof(sampleRate), "Invalid sample rate specified.");
}
if (!AllowedChannelCounts.Contains(channelCount))
{
throw new ArgumentOutOfRangeException(nameof(channelCount), "Invalid channel count specified.");
}
if (voiceApplication != VoiceApplication.Music && voiceApplication != VoiceApplication.Voice && voiceApplication != VoiceApplication.LowLatency)
{
throw new ArgumentOutOfRangeException(nameof(voiceApplication), "Invalid voice application specified.");
}
this.SampleRate = sampleRate;
this.ChannelCount = channelCount;
this.VoiceApplication = voiceApplication;
}
internal bool IsValid() => AllowedSampleRates.Contains(this.SampleRate) && AllowedChannelCounts.Contains(this.ChannelCount) && (this.VoiceApplication == VoiceApplication.Music || this.VoiceApplication == VoiceApplication.Voice || this.VoiceApplication == VoiceApplication.LowLatency);
