protected override RecorderAec GetRecorder()
{
var recorder = new RecorderAec(CaptureSource, AudioSinkAdapter, mSpeakersAudioVisualizer,
mCancelledAudioVisualizer, mEchoCancelFilter, mCancelledFrames);
AudioSinkAdapter.InstanceName = "ForTestRunnerLive";
return(recorder);
}
protected virtual void StartNextTest()
{
Deployment.Current.Dispatcher.BeginInvoke(() => Status = string.Format("Executing test for latency {0} and filter length {1}", ExpectedLatency, FilterLength));
mTestStartTime = DateTime.Now;
IAudioFilter playedResampler;
IAudioFilter recordedResampler;
mCancelledFrames = new List <byte[]>();
// Decide whether to synchronize the audio or not.
if (AecIsSynchronized)
{
playedResampler = new ResampleFilter(audioFormat, audioFormat);
recordedResampler = new ResampleFilter(audioFormat, audioFormat);
}
else
{
playedResampler = new NullAudioFilter(audioFormat.BytesPerFrame);
recordedResampler = new NullAudioFilter(audioFormat.BytesPerFrame);
}
// Initialize the echo canceller
playedResampler.InstanceName = "EchoCanceller_played";
recordedResampler.InstanceName = "EchoCanceller_recorded";
mediaConfig.ExpectedAudioLatency = ExpectedLatency;
mediaConfig.FilterLength = FilterLength;
switch (mEchoCancellerType)
{
case EchoCancellerType.Speex2:
mEchoCancelFilter = new SpeexEchoCanceller2(mediaConfig, audioFormat, AudioFormat.Default);
break;
case EchoCancellerType.WebRtc:
mEchoCancelFilter = new WebRtcFilter(mediaConfig.ExpectedAudioLatency,
mediaConfig.FilterLength,
audioFormat,
AudioFormat.Default,
true,
true,
false,
playedResampler, recordedResampler);
break;
case EchoCancellerType.TimeDomain:
mEchoCancelFilter = new TimeDomainEchoCancelFilter(ExpectedLatency, FilterLength, audioFormat, AudioFormat.Default, playedResampler, recordedResampler);
break;
case EchoCancellerType.Speex:
mEchoCancelFilter = new SpeexEchoCancelFilter(ExpectedLatency, FilterLength, audioFormat, AudioFormat.Default, playedResampler, recordedResampler);
break;
default:
throw new Exception();
}
mPlayer = GetPlayer();
mRecorder = GetRecorder();
mRecorder.StartRecording(SpeakerFrames, FinishTest);
mPlayer.StartPlaying(SourceFrames, mRecorder.StopRecording);
}