/// <summary>
/// Initializes new instance of WitMic
/// </summary>
/// <param name="witPipedStream">Stream to write audio to</param>
/// <param name="detectSpeechStop">Voice activity detection feature</param>
public WitMic(WitPipedStream witPipedStream, bool detectSpeechStop)
{
this.witPipedStream = witPipedStream;
this.detectSpeechStop = detectSpeechStop;
microphone = Microphone.Default;
if (microphone == null)
{
WitLog.Log("Did you enabled ID_CAP_MICROPHONE in WMAppManifest.xml?");
return;
}
witDetectTalking = new WitVadWrapper(8.0, 16000, 60);
microphone.BufferDuration = TimeSpan.FromMilliseconds(100);
speech = new byte[microphone.GetSampleSizeInBytes(microphone.BufferDuration)];
microphone.BufferReady += microphone_BufferReady;
updateTimer = new DispatcherTimer()
{
Interval = TimeSpan.FromMilliseconds(1)
};
updateTimer.Tick += (s, e) =>
{
FrameworkDispatcher.Update();
};
}
/// <summary>
/// Initializes new instance of WitMic
/// </summary>
/// <param name="witPipedStream">Stream to write audio to</param>
/// <param name="detectSpeechStop">Voice activity detection feature</param>
public WitMic(WitPipedStream witPipedStream, bool detectSpeechStop)
{
this.witPipedStream = witPipedStream;
this.detectSpeechStop = detectSpeechStop;
microphone = Microphone.Default;
if (microphone == null)
{
WitLog.Log("Did you enabled ID_CAP_MICROPHONE in WMAppManifest.xml?");
return;
}
witDetectTalking = new WitVadWrapper(8.0, 16000, 60);
microphone.BufferDuration = TimeSpan.FromMilliseconds(100);
speech = new byte[microphone.GetSampleSizeInBytes(microphone.BufferDuration)];
microphone.BufferReady += microphone_BufferReady;
updateTimer = new DispatcherTimer()
{
Interval = TimeSpan.FromMilliseconds(1)
};
updateTimer.Tick += (s, e) =>
{
FrameworkDispatcher.Update();
};
}
/// <summary>
/// Initializes new instance of WitSpeechRequestTask class
/// </summary>
/// <param name="accessToken">Access Token</param>
/// <param name="witPipedStream">Audio stream</param>
/// <param name="type">Type</param>
/// <param name="encoding">Encoding</param>
/// <param name="bits">Bits per sample</param>
/// <param name="rate">Samples per second</param>
/// <param name="order">Bytes order</param>
public WitSpeechRequestTask(string accessToken, WitPipedStream witPipedStream, string type, string encoding, int bits, int rate, ByteOrder order)
{
this.accessToken = accessToken;
this.witPipedStream = witPipedStream;
this.type = type;
this.encoding = encoding;
this.bits = bits;
this.rate = rate;
this.order = order;
}
/// <summary>
/// Initializes new instance of WitSpeechRequestTask class
/// </summary>
/// <param name="accessToken">Access Token</param>
/// <param name="witPipedStream">Audio stream</param>
/// <param name="type">Type</param>
/// <param name="encoding">Encoding</param>
/// <param name="bits">Bits per sample</param>
/// <param name="rate">Samples per second</param>
/// <param name="order">Bytes order</param>
public WitSpeechRequestTask(string accessToken, WitPipedStream witPipedStream, string type, string encoding, int bits, int rate, ByteOrder order)
{
this.accessToken = accessToken;
this.witPipedStream = witPipedStream;
this.type = type;
this.encoding = encoding;
this.bits = bits;
this.rate = rate;
this.order = order;
}
/// <summary>
/// Capture intent and entities from a microphone
/// </summary>
/// <returns>Captured data</returns>
public async Task <WitResponse> CaptureVoiceIntent()
{
WitPipedStream witPipedStream = new WitPipedStream();
witMic = new WitMic(witPipedStream, DetectSpeechStop);
if (witMic.StartRecording())
{
return(await StreamRawAudio(witPipedStream, "audio/raw", "signed-integer", 16, 16000, ByteOrder.LITTLE_ENDIAN));
}
else
{
return(null);
}
}
/// <summary>
/// Streams raw audio data and returns captured intent and entities
/// </summary>
/// <param name="witPipedStream">Audio stream</param>
/// <param name="type">Type</param>
/// <param name="encoding">Encoding</param>
/// <param name="bits">Bits per sample</param>
/// <param name="rate">Samples per second</param>
/// <param name="order">Bytes order</param>
/// <returns>Captured data</returns>
public async Task <WitResponse> StreamRawAudio(WitPipedStream witPipedStream, string type, string encoding, int bits, int rate, ByteOrder order)
{
WitSpeechRequestTask witSpeechRequestTask = new WitSpeechRequestTask(accessToken, witPipedStream, type, encoding, bits, rate, order);
string result = await witSpeechRequestTask.UploadAsync();
if (result != null)
{
WitResponse witResponse = JsonConvert.DeserializeObject <WitResponse>(result);
return(witResponse);
}
return(null);
}
/// <summary>
/// Capture intent and entities from a microphone
/// </summary>
/// <returns>Captured data</returns>
public async Task<WitResponse> CaptureVoiceIntent()
{
WitPipedStream witPipedStream = new WitPipedStream();
witMic = new WitMic(witPipedStream, DetectSpeechStop);
if (witMic.StartRecording())
{
return await StreamRawAudio(witPipedStream, "audio/raw", "signed-integer", 16, 16000, ByteOrder.LITTLE_ENDIAN);
}
else
{
return null;
}
}
/// <summary>
/// Streams raw audio data and returns captured intent and entities
/// </summary>
/// <param name="witPipedStream">Audio stream</param>
/// <param name="type">Type</param>
/// <param name="encoding">Encoding</param>
/// <param name="bits">Bits per sample</param>
/// <param name="rate">Samples per second</param>
/// <param name="order">Bytes order</param>
/// <returns>Captured data</returns>
public async Task<WitResponse> StreamRawAudio(WitPipedStream witPipedStream, string type, string encoding, int bits, int rate, ByteOrder order)
{
WitSpeechRequestTask witSpeechRequestTask = new WitSpeechRequestTask(accessToken, witPipedStream, type, encoding, bits, rate, order);
string result = await witSpeechRequestTask.UploadAsync();
if (result != null)
{
WitResponse witResponse = JsonConvert.DeserializeObject<WitResponse>(result);
return witResponse;
}
return null;
}
