public async ValueTask <ISpeechResult> TranslateTextAsync(AWSSpeechRequest request)
{
var result = new AWSSpeechResult();
var chunks = request.Content.Chunk(30).ToArray();
var textIndex = 0;
for (int i = 0; i < chunks.Length; i++)
{
if (i > 0)
{
await Task.Delay(60000);
}
var tasks = new List <Task>();
foreach (var chunk in chunks[i])
{
tasks.Add(QueueText(chunk, textIndex, request, result));
textIndex++;
}
await Task.WhenAll(tasks);
}
return(result);
}
private async Task QueueText(string text, int index, AWSSpeechRequest request, AWSSpeechResult result)
{
var synthesizeSpeechRequest = new StartSpeechSynthesisTaskRequest
{
OutputFormat = request.OutputFormat,
VoiceId = request.VoiceId,
Text = text,
OutputS3BucketName = _translationOptions.Bucket,
OutputS3KeyPrefix = Guid.NewGuid().ToString()
};
var response = await _pollyClient.StartSpeechSynthesisTaskAsync(synthesizeSpeechRequest);
using (var waitHandle = new AutoResetEvent(false))
using (new Timer(
callback: async(e) => { await CheckSynthesisTask(response.SynthesisTask.TaskId, waitHandle); },
state: null,
dueTime: TimeSpan.Zero,
period: TimeSpan.FromSeconds(_translationOptions.PollRate)
)
)
{
waitHandle.WaitOne();
}
var task = await _pollyClient.GetSpeechSynthesisTaskAsync(new GetSpeechSynthesisTaskRequest { TaskId = response.SynthesisTask.TaskId });
if (task.SynthesisTask.TaskStatus == Amazon.Polly.TaskStatus.Failed)
{
throw new InvalidOperationException();
}
var key = task.SynthesisTask.OutputUri.Split('/').Last();
var fileResult = await _fileClient.DownloadAsync(key, "");
using (var stream = await fileResult.OpenStreamAsync())
{
await result.DigestBytes(index, stream);
}
if (request.CallBack != null)
{
await request.CallBack(text.Length);
}
await _fileClient.DeleteAsync(key, "");
}
