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LouisGameDev/WSAPI5.cs

Created February 18, 2026 01:25
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  1. LouisGameDev created this gist Feb 18, 2026.
    78 changes: 78 additions & 0 deletions WSAPI5.cs
    View file
    Original file line number Diff line number Diff line change
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    using System;
    using System.IO;
    using System.Speech;

    using System.Speech.Synthesis;
    using System.Speech.AudioFormat;

    public class WSAPI5
    {
    public static void Main() {
    // Stdout is used to output audio bytes
    // Stderr is used to synchronize
    // Stdin is used to read Speak commands in the format <name>\n<text>\n
    // Stdin also accepts !LIST, lists available voices in the format <name>\n<gender>\n
    Stream stdout = Console.OpenStandardOutput();

    SpeechSynthesizer synth = new SpeechSynthesizer();
    SpeechAudioFormatInfo format = new SpeechAudioFormatInfo(22050, (AudioBitsPerSample) 16, (AudioChannel) 1);
    MemoryStream audioStream = new MemoryStream();
    // Set synth to output audio bytes to our stream
    synth.SetOutputToAudioStream(audioStream, format);

    String voiceName = null;
    // line 1: voiceName (or !LIST)
    while ((voiceName = Console.ReadLine()) != null ) {

    if (voiceName.Equals("!LIST")) {
    GetInstalledVoices();
    continue;
    }

    // line 2: Spoken Text
    String text = Console.ReadLine();

    if (voiceName.Length == 0 || text.Length == 0) {
    Console.Error.WriteLine("EXCEPTION:Invalid Speech Format");
    continue;
    }

    try {
    synth.SelectVoice(voiceName);
    } catch (ArgumentException) {
    Console.Error.WriteLine("EXCEPTION:Invalid Voice Name");
    continue;
    }

    // Capture AudioStream from SAPI5
    audioStream.SetLength(0);
    synth.Speak(text);
    byte[] bytearray = audioStream.ToArray();

    // Stream audio bytes to Java
    stdout.Write(bytearray, 0, bytearray.Length);

    // We use the error stream to signal end of buffer
    Console.Error.WriteLine("END_OUT");
    }

    stdout.Close();
    }

    public static void GetInstalledVoices()
    {
    SpeechSynthesizer speak = new SpeechSynthesizer();
    foreach (InstalledVoice voice in speak.GetInstalledVoices()) {
    try {
    // Some voices are listed but not speakable
    speak.SelectVoice(voice.VoiceInfo.Name);
    } catch (ArgumentException) {
    continue;
    }

    Console.Error.WriteLine(voice.VoiceInfo.Name);
    Console.Error.WriteLine(voice.VoiceInfo.Gender);
    }
    Console.Error.WriteLine("END_OUT");
    }
    }