Adding emscripten files

emscripten/espeakng_glue.cpp

@@ -0,0 +1,86 @@
+/*
+ * 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/>.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <emscripten.h>
+#include "speak_lib.h"
+
+static int gSamplerate = 0;
+
+class eSpeakNGWorker {
+public:
+  eSpeakNGWorker() : rate(espeakRATE_NORMAL), pitch(50), current_voice(NULL) {
+    if (!gSamplerate) {
+      gSamplerate = espeak_Initialize(
+        AUDIO_OUTPUT_SYNCHRONOUS, 100, NULL, espeakINITIALIZE_DONT_EXIT);
+    }
+    samplerate = gSamplerate;
+    voices = espeak_ListVoices(NULL);
+  }
+
+  void synth_(const char* aText, void* aCallback) {
+    t_espeak_callback* cb = reinterpret_cast<t_espeak_callback*>(aCallback);
+    espeak_SetSynthCallback(cb);
+    espeak_SetParameter(espeakPITCH, pitch, 0);
+    espeak_SetParameter(espeakRATE, rate, 0);
+
+    if (current_voice)
+      espeak_SetVoiceByProperties(current_voice);
+    else
+      espeak_SetVoiceByName("default");
+
+    espeak_Synth(aText, 0, 0, POS_CHARACTER, 0, 0, NULL, NULL);
+
+    // Reset callback so other instances will work too.
+    espeak_SetSynthCallback(NULL);
+  }
+
+  void set_voice(
+        const char* aName,
+        const char* aLang,
+        unsigned char aGender=0,
+        unsigned char aAge=0,
+        unsigned char aVariant = 0
+    ) {
+    espeak_VOICE props = { 0 };
+    props.name = aName;
+    props.languages = aLang;
+    props.gender = aGender;
+    props.age = aAge;
+    props.variant = aVariant;
+    // This way we don't need to allocate the name/lang strings to the heap.
+    // Instead, we store the actual global voice.
+    espeak_SetVoiceByProperties(&props);
+    current_voice = espeak_GetCurrentVoice();
+  }
+
+  int getSizeOfEventStruct_() {
+    return sizeof(espeak_EVENT);
+  }
+
+  const espeak_VOICE** voices;
+  int samplerate;
+  int rate;
+  int pitch;
+
+private:
+  espeak_VOICE* current_voice;
+};
+
+#include <glue.cpp>
+