public void Speak(string msg, SynthParams p, bool toFile = false)
{
const int headerSize = 44;
const int formatChunkSize = 16;
const short waveAudioFormat = 1;
const short numChannels = 1;
const int sampleRate = 16000;
const short bitsPerSample = 16;
const int byteRate = (numChannels * bitsPerSample * sampleRate) / 8;
const short blockAlign = numChannels * bitsPerSample / 8;
var text = Encoding.UTF8.GetBytes(msg);
var message = NativeMethods.RHVoice_new_message(engine, text, (uint)text.Length, MessageType.Text, p, IntPtr.Zero);
using (stream = new MemoryStream())
{
NativeMethods.RHVoice_speak(message);
NativeMethods.RHVoice_delete_message(message);
var sizeInBytes = (int)stream.Length;
using (var writer = new MemoryStream())
{
writer.Write(Encoding.ASCII.GetBytes("RIFF"), 0, 4);
writer.Write(BitConverter.GetBytes(sizeInBytes + headerSize - 8), 0, 4);
writer.Write(Encoding.ASCII.GetBytes("WAVEfmt "), 0, 8);
writer.Write(BitConverter.GetBytes(formatChunkSize), 0, 4);
writer.Write(BitConverter.GetBytes(waveAudioFormat), 0, 2);
writer.Write(BitConverter.GetBytes(numChannels), 0, 2);
writer.Write(BitConverter.GetBytes(sampleRate), 0, 4);
writer.Write(BitConverter.GetBytes(byteRate), 0, 4);
writer.Write(BitConverter.GetBytes(blockAlign), 0, 2);
writer.Write(BitConverter.GetBytes(bitsPerSample), 0, 2);
writer.Write(Encoding.ASCII.GetBytes("data"), 0, 4);
writer.Write(BitConverter.GetBytes(sizeInBytes), 0, 4);
stream.Position = 0;
stream.CopyTo(writer);
var player = new SoundPlayer(writer);
writer.Position = 0;
player.Play();
if (toFile)
{
using (var file = File.Create("file.wav"))
{
writer.Position = 0;
writer.CopyTo(file);
}
}
}
}
}
public static extern IntPtr RHVoice_new_message(IntPtr engine, byte[] text, uint length, MessageType messageType, SynthParams synthParams, IntPtr user_data);