Adding emscripten files

2026-10-31 13:38:47 +00:00 · 2016-10-27 18:09:45 +02:00
parent 0b96f8a91c
commit ba91db79fe
9 changed files with 1425 additions and 0 deletions
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2014-2016 Eitan Isaacson
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see: <http://www.gnu.org/licenses/>.
+ */
+
+eSpeakNGWorker.prototype.list_voices = function() {
+  var voices = [];
+  var i;
+  for (var voice = this.get_voices(i = 0); voice.ptr != 0; voice = this.get_voices(++i)) {
+    var v = {
+      name: voice.get_name(),
+      identifier: voice.get_identifier(),
+      languages: [],
+    }
+
+    var ii = 0;
+    var byte = voice.get_languages(ii);
+
+    function nullTerminatedString(offset) {
+      var str = '';
+      var index = offset;
+      var b = voice.get_languages(index++);
+      while (b != 0) {
+        str += String.fromCharCode(b);
+        b = voice.get_languages(index++);
+      }
+
+      return str;
+    }
+
+    while (byte != 0) {
+      var lang = { priority: byte, name: nullTerminatedString(++ii) }
+      v.languages.push(lang);
+      ii += lang.name.length + 1;
+      byte = voice.get_languages(ii);
+    }
+
+    voices.push(v);
+
+  }
+  return voices;
+};
+
+var eventTypes = [
+  'list_terminated',
+  'word',
+  'sentence',
+  'mark',
+  'play',
+  'end',
+  'msg_terminated',
+  'phoneme',
+  'samplerate'
+]
+
+eSpeakNGWorker.prototype.synthesize = function (aText, aCallback) {
+  var eventStructSize = this.getSizeOfEventStruct_();
+  function cb(ptr, length, events_pointer) {
+    var data = new Float32Array(length*2);
+    for (var i = 0; i < length; i++) {
+      data[i*2] = Math.max(-1, Math.min(1, getValue(ptr + i*2, 'i16') / 32768));
+      data[i*2+1] = data[i*2];
+    }
+    var events = [];
+    var ptr = events_pointer;
+    for (ev = wrapPointer(ptr, espeak_EVENT);
+         ev.get_type() != Module.espeakEVENT_LIST_TERMINATED;
+         ev = wrapPointer((ptr += eventStructSize), espeak_EVENT)) {
+      events.push({
+        type: eventTypes[ev.get_type()],
+        text_position: ev.get_text_position(),
+        word_length: ev.get_length(),
+        audio_position: ev.get_audio_position()
+      });
+    }
+    return aCallback(data, events) ? 1 : 0;
+  }
+
+  var fp = Runtime.addFunction(cb);
+  this.synth_(aText, fp);
+  Runtime.removeFunction(fp);
+};
+
+// Make this a worker
+
+if (typeof WorkerGlobalScope !== 'undefined') {
+  var worker;
+
+  Module.postRun.push(function () {
+    worker = new eSpeakNGWorker();
+    postMessage('ready');
+  });
+
+  onmessage = function(e) {
+    if (!worker) {
+      throw 'eSpeakNGWorker worker not initialized';
+    }
+    var args = e.data.args;
+    var message = { callback: e.data.callback, done: true };
+    if (e.data.method == 'synthesize') {
+      args.push(function(samples, events) {
+        postMessage(
+          { callback: e.data.callback,
+            result: [samples.buffer, events] }, [samples.buffer]);
+      });
+    }
+    message.result = [worker[e.data.method].apply(worker, args)];
+    if (e.data.callback)
+      postMessage(message);
+  }
+}