/// <summary>
///
/// </summary>
/// <param name="inputFormat">format of audio supplied to `Send`</param>
/// <param name="inputFrameSize">Size of frames which will should be provided from `GetFrameBuffer`</param>
/// <param name="intermediateFrameSize">Size of frames which should be passed into `PreprocessAudioFrame`</param>
/// <param name="intermediateSampleRate">Sample rate which should be passed into `PreprocessAudioFrame`</param>
/// <param name="outputFrameSize">Size of frames which will be provided sent to `SendSamplesToSubscribers`</param>
/// <param name="outputSampleRate"></param>
protected BasePreprocessingPipeline(WaveFormat inputFormat, int inputFrameSize, int intermediateFrameSize, int intermediateSampleRate, int outputFrameSize, int outputSampleRate)
{
if (inputFrameSize < 0)
{
throw new ArgumentOutOfRangeException("inputFrameSize", "Input frame size cannot be less than zero");
}
_inputFrameSize = inputFrameSize;
_outputFrameSize = outputFrameSize;
_outputFormat = new WaveFormat(1, outputSampleRate);
//Create input system (source of empty buffers, queue of waiting input data)
_inputBufferSource = new ConcurrentPool <float[]>(24, () => new float[inputFrameSize]);
_inputQueue = new TransferBuffer <float[]>(12);
_emptyInputFrame = new float[inputFrameSize];
//Create resampler to resample input to intermediate rate
_resamplerInput = new BufferedSampleProvider(inputFormat, InputFrameSize * 4);
_resampler = new Resampler(_resamplerInput, 48000);
_resampledOutput = new SampleToFrameProvider(_resampler, (uint)OutputFrameSize);
_intermediateFrame = new float[intermediateFrameSize];
_threadEvent = new AutoResetEvent(false);
_thread = new DThread(ThreadEntry);
}
/// <summary>
///
/// </summary>
/// <param name="inputFormat">format of audio supplied to `Send`</param>
/// <param name="intermediateFrameSize">Size of frames which should be passed into `PreprocessAudioFrame`</param>
/// <param name="intermediateSampleRate">Sample rate which should be passed into `PreprocessAudioFrame`</param>
/// <param name="outputFrameSize">Size of frames which will be provided sent to `SendSamplesToSubscribers`</param>
/// <param name="outputSampleRate"></param>
protected BasePreprocessingPipeline([NotNull] WaveFormat inputFormat, int intermediateFrameSize, int intermediateSampleRate, int outputFrameSize, int outputSampleRate)
{
if (inputFormat == null)
{
throw new ArgumentNullException("inputFormat");
}
if (intermediateFrameSize < 0)
{
throw new ArgumentOutOfRangeException("intermediateFrameSize", "Intermediate frame size cannot be less than zero");
}
if (intermediateSampleRate < 0)
{
throw new ArgumentOutOfRangeException("intermediateSampleRate", "Intermediate sample rate cannot be less than zero");
}
if (outputFrameSize < 0)
{
throw new ArgumentOutOfRangeException("outputFrameSize", "Output frame size cannot be less than zero");
}
if (outputSampleRate < 0)
{
throw new ArgumentOutOfRangeException("outputSampleRate", "Output sample rate cannot be less than zero");
}
_outputFrameSize = outputFrameSize;
_outputFormat = new WaveFormat(outputSampleRate, 1);
//Create resampler to resample input to intermediate rate
_resamplerInput = new BufferedSampleProvider(inputFormat, intermediateFrameSize * 16);
_resampler = new Resampler(_resamplerInput, 48000);
_resampledOutput = new SampleToFrameProvider(_resampler, (uint)OutputFrameSize);
_intermediateFrame = new float[intermediateFrameSize];
//Create a thread to drive the audio processing
_threadEvent = new AutoResetEvent(false);
_thread = new DThread(ThreadEntry);
// We don't want to overestimate the latency. It's hard to come up with a reasonable number for this because if the input frames are >= the...
// ...intermediate frames there will actually be no buffering delay in the preprocessor (it'll pick up a complete frame and process it right away).
_estimatedPreprocessorLatencyMs = 0;
}
/// <summary>
///
/// </summary>
/// <param name="inputFormat">format of audio supplied to `Send`</param>
/// <param name="inputFrameSize">Size of frames which will should be provided from `GetFrameBuffer`</param>
/// <param name="intermediateFrameSize">Size of frames which should be passed into `PreprocessAudioFrame`</param>
/// <param name="intermediateSampleRate">Sample rate which should be passed into `PreprocessAudioFrame`</param>
/// <param name="outputFrameSize">Size of frames which will be provided sent to `SendSamplesToSubscribers`</param>
/// <param name="outputSampleRate"></param>
protected BasePreprocessingPipeline([NotNull] WaveFormat inputFormat, int inputFrameSize, int intermediateFrameSize, int intermediateSampleRate, int outputFrameSize, int outputSampleRate)
{
if (inputFormat == null)
{
throw new ArgumentNullException("inputFormat");
}
if (inputFrameSize < 0)
{
throw new ArgumentOutOfRangeException("inputFrameSize", "Input frame size cannot be less than zero");
}
if (intermediateFrameSize < 0)
{
throw new ArgumentOutOfRangeException("intermediateFrameSize", "Intermediate frame size cannot be less than zero");
}
if (intermediateSampleRate < 0)
{
throw new ArgumentOutOfRangeException("intermediateSampleRate", "Intermediate sample rate cannot be less than zero");
}
if (outputFrameSize < 0)
{
throw new ArgumentOutOfRangeException("outputFrameSize", "Output frame size cannot be less than zero");
}
if (outputSampleRate < 0)
{
throw new ArgumentOutOfRangeException("outputSampleRate", "Output sample rate cannot be less than zero");
}
_inputFrameSize = inputFrameSize;
_outputFrameSize = outputFrameSize;
_outputFormat = new WaveFormat(1, outputSampleRate);
//Create resampler to resample input to intermediate rate
_resamplerInput = new BufferedSampleProvider(inputFormat, InputFrameSize * 16);
_resampler = new Resampler(_resamplerInput, 48000);
_resampledOutput = new SampleToFrameProvider(_resampler, (uint)OutputFrameSize);
_intermediateFrame = new float[intermediateFrameSize];
_threadEvent = new AutoResetEvent(false);
_thread = new DThread(ThreadEntry);
}
