public static async Task <IActionResult> Run([HttpTrigger(AuthorizationLevel.Function, "get", Route = null)] HttpRequest req, ILogger logger, ExecutionContext context)
{
var text = req.Query["q"];
logger.LogInformation($"Request text: {text}");
if (string.IsNullOrWhiteSpace(text))
{
return(new BadRequestObjectResult("You must specify the message in the 'q' query string parameter"));
}
else
{
if (settings == null)
{
var config = new ConfigurationBuilder()
.SetBasePath(context.FunctionAppDirectory)
.AddJsonFile("local.settings.json", optional: true, reloadOnChange: true)
.AddEnvironmentVariables()
.Build();
settings = config.GetSection("AppSettings").Get <AppSettings>();
}
if (string.IsNullOrWhiteSpace(settings.SpeechSubscriptionKey))
{
return(new StatusCodeResult(StatusCodes.Status500InternalServerError));
}
else
{
// Create the service for text-to-speech using Cognitive Services Speech.
var ttsClient = new SpeechClient(settings.SpeechRegion, settings.SpeechSubscriptionKey);
var responseStream = await ttsClient.SpeakAsync(new TextToSpeechParameters
{
Text = text,
VoiceType = (Gender)Enum.Parse(typeof(Gender), settings.Gender ?? "Male", true),
Language = settings.Culture ?? "it-IT",
VoiceName = settings.VoiceName ?? "Microsoft Server Speech Text to Speech Voice (it-IT, Cosimo, Apollo)",
// Service can return audio in different output format.
OutputFormat = AudioOutputFormat.Audio24Khz160KBitRateMonoMp3
});
var response = new FileStreamResult(responseStream, "audio/mp3");
return(response);
}
}
}