!7

p {
  tts("Hello");
}

// speech libraries!
lib 1000722
lib 1000723
lib 1000724
lib 1000730
lib 1000731
lib 1000732
lib 1000726
lib 1000727

import javax.speech.*;
import javax.speech.synthesis.*;

static Lock tts_lock = fairLock();

sbool tts_debug, tts_disable, tts_verbose;
static Synthesizer tts_synth;

sS tts(String text) ctex {
  lock tts_lock;
  if (tts_verbose) print("Kevin: " + text);
  if (tts_disable || tts_synth != null && empty(trim(text))) return text;
  
  if (tts_synth == null) {
    System.setProperty("mbrola.base", f2s(userDir("dev/mbrola")));
    String voiceName = "mbrola_us1";
  
    System.setProperty("FreeTTSSynthEngineCentral", "com.sun.speech.freetts.jsapi.FreeTTSEngineCentral");
    System.setProperty("freetts.voices", "de.dfki.lt.freetts.en.us.MbrolaVoiceDirectory");
			
    Central.registerEngineCentral("com.sun.speech.freetts.jsapi.FreeTTSEngineCentral");

    SynthesizerModeDesc desc = new SynthesizerModeDesc(null, "general", Locale.US, null, null);

    if (tts_debug) print("Creating synth");
    Synthesizer synth = tts_synth = Central.createSynthesizer(desc);
    synth.allocate();
    desc = (SynthesizerModeDesc) synth.getEngineModeDesc();
    Voice[] voices = desc.getVoices();
    Voice voice = null;
    for (Voice entry : voices) {
        if(entry.getName().equals(voiceName)) {
            voice = entry;
            break;
        }
    }
    if (tts_debug) print("Voice: " + voice);
    synth.getSynthesizerProperties().setVoice(voice);
    synth.resume();
  }
  
  if (tts_debug) print("Speaking...");
  tts_synth.speakPlainText(text, null);
  if (tts_debug) print("Waiting");
  // TODO: We wait later anyway
  long state;
  int n = 0;
  while (((state = tts_synth.getEngineState()) & Synthesizer.QUEUE_EMPTY) != 0) {
    sleep(50);
    if (++n >= 10000/50) {
      print("Engine state: " + state + ", aborting");
      break;
    }
  }
  
  //tts_synth.waitEngineState(Synthesizer.QUEUE_EMPTY);
  if (tts_debug) print("Done");
  
  // keep synth for next time
  //tts_synth.deallocate();
  
  ret text;
}

Began life as a copy of #1000737