Bug 3365937 notify TTS initialization listener of binding errors

The creation of a TextToSpeech object causes the TTS service to
 start, and the initialization listener to be called when the
 service is connected. But the listener is never called when
 the service binding failed to be notified of this error.
The fix consists in checking the result of the bind to service
 operation, and notify the listener in case of an error.

More log was added in case speak() and synthesizeToFile() are
 called but the service is not known to have started.

Change-Id: I7dcc1fa44be31fee3177ec6215fca3306377b934

Author: jmtrivi

core/java/android/speech/tts/TextToSpeech.java

@@ -464,10 +464,17 @@ public void onServiceDisconnected(ComponentName name) {
 
         Intent intent = new Intent("android.intent.action.START_TTS_SERVICE");
         intent.addCategory("android.intent.category.TTS");
-        mContext.bindService(intent, mServiceConnection,
-                Context.BIND_AUTO_CREATE);
-        // TODO handle case where the binding works (should always work) but
-        //      the plugin fails
+        boolean bound = mContext.bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);
+        if (!bound) {
+            Log.e("TextToSpeech.java", "initTts() failed to bind to service");
+            if (mInitListener != null) {
+                mInitListener.onInit(ERROR);
+            }
+        } else {
+            // initialization listener will be called inside ServiceConnection
+            Log.i("TextToSpeech.java", "initTts() successfully bound to service");
+        }
+        // TODO handle plugin failures
     }
 
 
@@ -717,8 +724,9 @@ public int speak(String text, int queueMode, HashMap<String,String> params)
     {
         synchronized (mStartLock) {
             int result = ERROR;
-            Log.i("TTS received: ", text);
+            Log.i("TextToSpeech.java - speak", "speak text of length " + text.length());
             if (!mStarted) {
+                Log.e("TextToSpeech.java - speak", "service isn't started");
                 return result;
             }
             try {
@@ -1226,7 +1234,10 @@ public int synthesizeToFile(String text, HashMap<String,String> params,
             String filename) {
         synchronized (mStartLock) {
             int result = ERROR;
+            Log.i("TextToSpeech.java - synthesizeToFile", "synthesizeToFile text of length "
+                    + text.length());
             if (!mStarted) {
+                Log.e("TextToSpeech.java - synthesizeToFile", "service isn't started");
                 return result;
             }
             try {