public async Task <byte[]> SynthesizeSpeechAsync(string message)
{
var request = new HttpRequestMessage(HttpMethod.Post, _speechEndpoint)
{
Content = new StringContent(GenerateSsml(message), Encoding.UTF8, "application/ssml+xml"),
};
var autToken = await AzureAuthenticationService.GetAccessToken(_subscriptionKey, _region);
request.Headers.Add("Authorization", autToken);
var responseMessage = await Client.SendAsync(request, HttpCompletionOption.ResponseContentRead, CancellationToken.None);
responseMessage.EnsureSuccessStatusCode();
var httpStream = await responseMessage.Content.ReadAsStreamAsync();
// Convert stream to byte array
using (var memoryStream = new MemoryStream())
{
await httpStream.CopyToAsync(memoryStream);
return(memoryStream.ToArray());
}
}
private async Task ConnectAsync(SpeechClientOptions options)
{
if (s2smtClient != null && s2smtClient.IsConnected())
{
return;
}
if (options.GetType() != typeof(SpeechTranslateClientOptions))
{
throw new InvalidOperationException("Type of SpeechClientOptions is not supported.");
}
options.AuthHeaderValue = await AzureAuthenticationService.GetAccessToken(subscriptionKey);
// Create the client
s2smtClient = new SpeechClient((SpeechTranslateClientOptions)options, CancellationToken.None);
TextMessageDecoder textDecoder = TextMessageDecoder.CreateTranslateDecoder();
s2smtClient.OnBinaryData += (c, a) => { AddSamplesToStream(a); };
s2smtClient.OnEndOfBinaryData += (c, a) => { AddSamplesToStream(a); };
s2smtClient.OnTextData += (c, a) => { textDecoder.AppendData(a); lastReceivedPacketTick = DateTime.Now.Ticks; };
s2smtClient.OnEndOfTextData += (c, a) =>
{
textDecoder.AppendData(a);
lastReceivedPacketTick = DateTime.Now.Ticks;
textDecoder
.Decode()
.ContinueWith(t =>
{
if (t.IsFaulted)
{
Trace.TraceError("Failed to decode incoming text message: {0}", t.Exception);
}
else
{
object msg = t.Result;
TranscriptUtterance utterance = null;
if (msg.GetType() == typeof(FinalResultMessage))
{
var final = msg as FinalResultMessage;
long offset = long.Parse(final.AudioTimeOffset);
long duration = long.Parse(final.AudioTimeSize);
TimeSpan currFileStartTime = TimeSpan.FromTicks(offset - currentFileStartTicks);
TimeSpan currFileEndime = TimeSpan.FromTicks(currFileStartTime.Ticks + duration);
Trace.TraceInformation("Final recognition {0} ({1} - {2}): {3}", final.Id, currFileStartTime.ToString(), currFileEndime.ToString(), final.Recognition);
Trace.TraceInformation("Final translation {0}: {1}", final.Id, final.Translation);
utterance = new TranscriptUtterance();
utterance.Recognition = final.Recognition;
utterance.Translation = final.Translation;
}
if (msg.GetType() == typeof(PartialResultMessage))
{
// Partial results are not used in this lab, leaving code as a reference
var partial = msg as PartialResultMessage;
Trace.TraceInformation("Partial recognition {0}: {1}", partial.Id, partial.Recognition);
Trace.TraceInformation("Partial translation {0}: {1}", partial.Id, partial.Translation);
utterance = new TranscriptUtterance();
utterance.Recognition = partial.Recognition;
utterance.Translation = partial.Translation;
}
if (utterance != null)
{
Transcripts.Add(utterance);
}
}
});
};
s2smtClient.Failed += (c, ex) =>
{
Trace.TraceError("SpeechTranslation client reported an error: {0}", ex);
};
s2smtClient.Disconnected += (c, ea) =>
{
Trace.TraceInformation("Connection has been lost.");
Trace.TraceInformation($"Errors (if any): \n{string.Join("\n", s2smtClient.Errors)}");
};
await s2smtClient.Connect();
}