Material transcribeFromObject(string gcsUri, string langCode)
{
SpeechClientBuilder scb = new SpeechClientBuilder();
scb.CredentialsPath = fnCredential;
var speech = scb.Build();
//var audio = RecognitionAudio.FromFile(fnAudio);
var audio = RecognitionAudio.FromStorageUri(gcsUri);
var config = new RecognitionConfig
{
Encoding = RecognitionConfig.Types.AudioEncoding.Flac,
SampleRateHertz = 16000,
LanguageCode = langCode,
EnableAutomaticPunctuation = true,
EnableWordTimeOffsets = true,
ProfanityFilter = false,
};
var op = speech.LongRunningRecognize(config, audio);
op = op.PollUntilCompleted();
var response = op.Result;
Material mat = new Material();
foreach (var result in response.Results)
{
Segment segm = new Segment();
var srAlt = result.Alternatives[0];
for (int i = 0; i < srAlt.Words.Count; ++i)
{
var srWord = srAlt.Words[i];
decimal startMSec = (decimal)Math.Round(srWord.StartTime.ToTimeSpan().TotalSeconds * 1000.0);
decimal endMSec = (decimal)Math.Round(srWord.EndTime.ToTimeSpan().TotalSeconds * 1000.0);
var word = new Word
{
StartSec = startMSec / 1000,
LengthSec = (endMSec - startMSec) / 1000,
Text = srWord.Word,
};
if (char.IsPunctuation(word.Text[word.Text.Length - 1]))
{
word.Trail = word.Text.Substring(word.Text.Length - 1);
word.Text = word.Text.Substring(0, word.Text.Length - 1);
}
segm.Words.Add(word);
if (word.Trail == "." || word.Trail == "?" || word.Trail == "!")
{
segm.StartSec = segm.Words[0].StartSec;
segm.LengthSec = segm.Words[segm.Words.Count - 1].StartSec + segm.Words[segm.Words.Count - 1].LengthSec - segm.StartSec;
mat.Segments.Add(segm);
segm = new Segment();
}
}
if (segm.Words.Count > 0)
{
segm.StartSec = segm.Words[0].StartSec;
segm.LengthSec = segm.Words[segm.Words.Count - 1].StartSec + segm.Words[segm.Words.Count - 1].LengthSec - segm.StartSec;
mat.Segments.Add(segm);
}
}
return(mat);
}
