public async Task StartTranscriptionAsync(Message message)
{
if (message == null)
{
throw new ArgumentNullException(nameof(message));
}
var busMessage = JsonConvert.DeserializeObject <ServiceBusMessage>(Encoding.UTF8.GetString(message.Body));
var audioFileName = StorageUtilities.GetFileNameFromUri(busMessage.Data.Url);
var startDateTime = DateTime.UtcNow;
// Check if language identification is required:
var secondaryLocale = StartTranscriptionEnvironmentVariables.SecondaryLocale;
if (!string.IsNullOrEmpty(secondaryLocale) &&
!secondaryLocale.Equals("None", StringComparison.OrdinalIgnoreCase) &&
!secondaryLocale.Equals(Locale, StringComparison.OrdinalIgnoreCase))
{
secondaryLocale = secondaryLocale.Split('|')[0].Trim();
Logger.LogInformation($"Primary locale: {Locale}");
Logger.LogInformation($"Secondary locale: {secondaryLocale}");
var languageID = new LanguageIdentification(StartTranscriptionEnvironmentVariables.AzureSpeechServicesKey, StartTranscriptionEnvironmentVariables.AzureSpeechServicesRegion);
var fileExtension = Path.GetExtension(audioFileName);
var sasUrl = await StorageUtilities.CreateSASAsync(StartTranscriptionEnvironmentVariables.AzureWebJobsStorage, busMessage.Data.Url, Logger).ConfigureAwait(false);
var byteArray = await StorageUtilities.DownloadFileFromSAS(sasUrl).ConfigureAwait(false);
var identifiedLocale = await languageID.DetectLanguage(byteArray, fileExtension, Locale, secondaryLocale).ConfigureAwait(false);
Logger.LogInformation($"Identified locale: {identifiedLocale}");
Locale = identifiedLocale;
}
await StartBatchTranscriptionJobAsync(new[] { message }, audioFileName, startDateTime).ConfigureAwait(false);
}
