private async Task <byte[]> SynthesisWithByteStreamToByteArrayAsync(string ssmlInput, SpeechConfig config)
{
var callback = new PushAudioOutputStreamSampleCallback();
using var stream = AudioOutputStream.CreatePushStream(callback);
using var streamConfig = AudioConfig.FromStreamOutput(stream);
using var synthesizer = new SpeechSynthesizer(config, streamConfig);
using var result = await synthesizer.SpeakSsmlAsync(ssmlInput);
if (result.Reason == ResultReason.SynthesizingAudioCompleted)
{
return(callback.GetAudioData());
}
else if (result.Reason == ResultReason.Canceled)
{
var cancellation = SpeechSynthesisCancellationDetails.FromResult(result);
Console.WriteLine($"CANCELED: Reason={cancellation.Reason}");
if (cancellation.Reason == CancellationReason.Error)
{
Console.WriteLine($"CANCELED: ErrorCode={cancellation.ErrorCode}");
Console.WriteLine($"CANCELED: ErrorDetails=[{cancellation.ErrorDetails}]");
Console.WriteLine($"CANCELED: Did you update the subscription info?");
}
}
return(null);
}
// Speech synthesis to push audio output stream.
public static async Task SynthesisToPushAudioOutputStreamAsync()
{
// Creates an instance of a speech config with specified subscription key and service region.
// Replace with your own subscription key and service region (e.g., "westus").
var config = SpeechConfig.FromSubscription("YourSubscriptionKey", "YourServiceRegion");
// Creates an instance of a customer class inherited from PushAudioOutputStreamCallback
var callback = new PushAudioOutputStreamSampleCallback();
// Creates an audio out stream from the callback.
using (var stream = AudioOutputStream.CreatePushStream(callback))
{
// Creates a speech synthesizer using audio stream output.
using (var streamConfig = AudioConfig.FromStreamOutput(stream))
using (var synthesizer = new SpeechSynthesizer(config, streamConfig))
{
while (true)
{
// Receives a text from console input and synthesize it to push audio output stream.
Console.WriteLine("Enter some text that you want to synthesize, or enter empty text to exit.");
Console.Write("> ");
string text = Console.ReadLine();
if (string.IsNullOrEmpty(text))
{
break;
}
using (var result = await synthesizer.SpeakTextAsync(text))
{
if (result.Reason == ResultReason.SynthesizingAudioCompleted)
{
Console.WriteLine($"Speech synthesized for text [{text}], and the audio was written to output stream.");
}
else if (result.Reason == ResultReason.Canceled)
{
var cancellation = SpeechSynthesisCancellationDetails.FromResult(result);
Console.WriteLine($"CANCELED: Reason={cancellation.Reason}");
if (cancellation.Reason == CancellationReason.Error)
{
Console.WriteLine($"CANCELED: ErrorCode={cancellation.ErrorCode}");
Console.WriteLine($"CANCELED: ErrorDetails=[{cancellation.ErrorDetails}]");
Console.WriteLine($"CANCELED: Did you update the subscription info?");
}
}
}
}
}
Console.WriteLine($"Totally {callback.GetAudioData().Length} bytes received.");
}
}
private async Task <KeyValuePair <string, string>?> CreateAndUploadSpeech(int episodeId, SrStoredEpisode storedEpisode, string text, string language, string voice)
{
var speechConfig = _speechConfigFactory.Get();
speechConfig.SpeechSynthesisLanguage = language;
speechConfig.SpeechSynthesisVoiceName = voice;
speechConfig.SetSpeechSynthesisOutputFormat(SpeechSynthesisOutputFormat.Audio24Khz160KBitRateMonoMp3);
using var stream = new MemoryStream();
using var audioStream = AudioOutputStream.CreatePushStream(new AudioPushAudioOutputStreamCallback(stream));
using var fileOutput = AudioConfig.FromStreamOutput(audioStream);
using var synthesizer = new SpeechSynthesizer(speechConfig, fileOutput);
var result = await synthesizer.SpeakTextAsync(text);
if (result.Reason == ResultReason.SynthesizingAudioCompleted)
{
_logger.LogInformation($"Created speech for episode {episodeId}");
var uploadedBlob = await UploadSpeech(storedEpisode, stream, voice);
_logger.LogInformation($"Uploaded speech for episode {episodeId}");
return(uploadedBlob);
}
if (result.Reason == ResultReason.Canceled)
{
var cancellation = SpeechSynthesisCancellationDetails.FromResult(result);
_logger.LogError($"Error creating speech for episode {episodeId}: Reason={cancellation.Reason}");
if (cancellation.Reason == CancellationReason.Error)
{
// Expect some texts to be to long etc
_logger.LogError(
$"Error creating speech for episode {episodeId}: ErrorCode={cancellation.ErrorCode}; ErrorDetails=[{cancellation.ErrorDetails}]");
}
return(null);
}
throw new Exception($"Unknown result status for speech: {result.Reason}");
}
