Long Audio - Python Sample to C Sharp Sample?

I am trying to use the Long Audio API. For some reason, the sample in the documentation is for Python instead of C Sharp. There is a C Sharp sample linked, and I am unable to understand it.

Here is the Python code.

def submit_synthesis():
    region = '<region>'
    key = '<your_key>'
    input_file_path = '<input_file_path>'
    locale = '<locale>'
    url = 'https://{}.customvoice.api.speech.microsoft.com/api/texttospeech/v3.0/longaudiosynthesis'.format(region)
    header = {
        'Ocp-Apim-Subscription-Key': key
    }

    voice_identities = [
        {
            'voicename': '<voice_name>'
        }
    ]

    payload = {
        'displayname': 'long audio synthesis sample',
        'description': 'sample description',
        'locale': locale,
        'voices': json.dumps(voice_identities),
        'outputformat': 'riff-16khz-16bit-mono-pcm',
        'concatenateresult': True,
    }

    filename = ntpath.basename(input_file_path)
    files = {
        'script': (filename, open(input_file_path, 'rb'), 'text/plain')
    }

    response = requests.post(url, payload, headers=header, files=files)
    print('response.status_code: %d' % response.status_code)
    print(response.headers['Location'])

submit_synthesis()

I dont quiet understand python, but, I recognize the code to some extent. I was able to use this, and refer the linked sample, and came up with the following.

C Sharp Samples : https://github.com/Azure-Samples/Cognitive-Speech-TTS/tree/master/CustomVoice-API-Samples/CSharp

public async Task LongAudioTestOne()
{
    var tempStuff = new ExtraStuff();
    //path for the input text file
    var workingDirectory = Directory.GetCurrentDirectory();
    var inputFileName = "samplefile.txt";
    var tempFileName = Path.Combine(workingDirectory, inputFileName);

    string subscriptionKey = tempStuff.subscriptionKey;

    using (FileStream fstream = new FileStream(tempFileName, FileMode.Open))
    using (var client = new HttpClient())
    using (var content = new MultipartFormDataContent())
    {
        client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", subscriptionKey);

        content.Add(new StringContent("sample display name"), "displayname");
        content.Add(new StringContent("sample description"), "description");
        content.Add(new StringContent("en-GB"), "locale");
        content.Add(new StringContent("[{\"voiceName\": \"en - GB - LibbyNeural\"}]"), "voices");
        content.Add(new StringContent("riff-16khz-16bit-mono-pcm"), "outputformat");

        //add file
        content.Add(new StreamContent(fstream), inputFileName, inputFileName);

        string url = @"https://centralindia.customvoice.api.speech.microsoft.com/api/texttospeech/v3.0/longaudiosynthesis";
        var response = client.PostAsync(url, content).Result;

        if (response.StatusCode != HttpStatusCode.Accepted)
        {
            //APIHelper.PrintErrorMessage(response);
            //return false;
            var something = response.StatusCode;
        }

        var something2 = response.StatusCode;
    }
}

I keep getting BAD REQUEST 400. I wish to know what is the mistake I am making here.

I feel like, this specific section,

    files = {
        'script': (filename, open(input_file_path, 'rb'), 'text/plain')
    }

is where I am losing out.

---

On a related note, I am curious, why is there isn’t a C # sample code for the same?

The linked sample project is not that easy to use, and it merges two scenarios - training and long audio, into a single function, which is hard to follow.

Or, is this one of those things where, this simply works better on Python?

[Ling-Cao]

@Jay-study-nildana, Thank you for sharing, I believe it would be helpful too, BTW, maybe the add file part can be removed~

//add file
//content.Add(new StreamContent(fstream), inputFileName, inputFileName);

Thanks, Ling

[Jay-study-nildana]

@Ling-Cao

It worked like magic! I would not have been successfull without you pointing me in the right direction.

I have put the full code here if someone else comes here looking for this.

Note : This is NOT the most elegant piece of code, but putting here anyway 😃

Placing A Request for Long Audio Service

public async Task LongAudioTestOne()
{
    var tempStuff = new ExtraStuff();
    //path for the input text file
    var workingDirectory = Directory.GetCurrentDirectory();
    var inputFileName = "samplefile.txt";
    var tempFileName = Path.Combine(workingDirectory, inputFileName);

    string subscriptionKey = tempStuff.subscriptionKey;

    using (FileStream fstream = new FileStream(tempFileName, FileMode.Open))
    using (var client = new HttpClient())
    using (var content = new MultipartFormDataContent())
    {
        client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", subscriptionKey);

        content.Add(new StringContent("sample display name"), "displayname");
        content.Add(new StringContent("sample description"), "description");
        content.Add(new StringContent("en-GB"), "locale");
        content.Add(new StringContent("[{\"voiceName\": \"en-GB-LibbyNeural\"}]"), "voices");
        content.Add(new StringContent("riff-16khz-16bit-mono-pcm"), "outputformat");

        //add file
        //content.Add(new StreamContent(fstream), inputFileName, inputFileName);

        var scriptContent = new StreamContent(fstream);
        scriptContent.Headers.Add("Content-Disposition", $@"form-data; name=""script""; filename=""{inputFileName}""");
        scriptContent.Headers.Add("Content-Type", "text/plain");
        scriptContent.Headers.Add("Content-Length", $"{fstream.Length}");
        content.Add(scriptContent, "script", inputFileName);

        string url = @"https://centralindia.customvoice.api.speech.microsoft.com/api/texttospeech/v3.0/longaudiosynthesis";
        var response = client.PostAsync(url, content).Result;

        if (response.StatusCode != HttpStatusCode.Accepted)
        {
            //APIHelper.PrintErrorMessage(response);
            //return false;
            var something = response.StatusCode;
        }

        var something2 = response.StatusCode;
    }
}

Checking for status

public async Task CheckStatus(string tempURLOfStatus)
{
    var tempStuff = new ExtraStuff();
    string subscriptionKey = tempStuff.subscriptionKey;
    using (var client = new HttpClient())
    {
        client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", subscriptionKey);

        string url = tempURLOfStatus;
        //var response = client.PostAsync(url, content).Result;
        var response = await client.GetAsync(url);
        var responseStringJSON = await client.GetStringAsync(url);

        if (response.StatusCode != HttpStatusCode.Accepted)
        {
            //APIHelper.PrintErrorMessage(response);
            //return false;
            var something = response.StatusCode;
            var tempJSON = response.ToString();
            string responseBody = await response.Content.ReadAsStringAsync();

            string jsonString = responseBody;
            var longAudioStatus = LongAudioStatus.FromJson(jsonString);
        }

        var something2 = response.StatusCode;
    }
}

Getting the Files

public async Task GetAudioResult(string tempRequestID)
{
    var tempStuff = new ExtraStuff();
    string subscriptionKey = tempStuff.subscriptionKey;
    using (var client = new HttpClient())
    {
        client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", subscriptionKey);

        string url = tempRequestID;
        //var response = client.PostAsync(url, content).Result;
        var response = await client.GetAsync(url);
        var responseStringJSON = await client.GetStringAsync(url);

        if (response.StatusCode != HttpStatusCode.Accepted)
        {
            //APIHelper.PrintErrorMessage(response);
            //return false;
            var something = response.StatusCode;
            var tempJSON = response.ToString();
            string responseBody = await response.Content.ReadAsStringAsync();

            string jsonString = responseBody;
            var longAudioStatusFile = LongAudioStatusFile.FromJson(jsonString);
        }

        var something2 = response.StatusCode;
    }
}

Again, not the most elegant code.