Fix bug 2481825

When TTS is synthesizing to a file, return an error if the file
cannot be created.

1 files changed, 18 insertions, 1 deletions

diff --git a/packages/TtsService/src/android/tts/TtsService.java b/packages/TtsService/src/android/tts/TtsService.java
index 7f76425..6b7ab3f 100755
--- a/packages/TtsService/src/android/tts/TtsService.java
+++ b/packages/TtsService/src/android/tts/TtsService.java
@@ -38,6 +38,7 @@ import android.speech.tts.TextToSpeech;
 import android.util.Log;
 
 import java.io.File;
+import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -1112,7 +1113,7 @@ public class TtsService extends Service implements OnCompletionListener {
      * @param filename
      *            The string that gives the full output filename; it should be
      *            something like "/sdcard/myappsounds/mysound.wav".
-     * @return A boolean that indicates if the synthesis succeeded
+     * @return A boolean that indicates if the synthesis can be started
      */
     private boolean synthesizeToFile(String callingApp, String text, ArrayList<String> params,
             String filename) {
@@ -1125,6 +1126,22 @@ public class TtsService extends Service implements OnCompletionListener {
         if (text.length() >= MAX_SPEECH_ITEM_CHAR_LENGTH){
             return false;
         }
+        // Check that the output file can be created
+        try {
+            File tempFile = new File(filename);
+            if (tempFile.exists()) {
+                Log.v("TtsService", "File " + filename + " exists, deleting.");
+                tempFile.delete();
+            }
+            if (!tempFile.createNewFile()) {
+                Log.e("TtsService", "Unable to synthesize to file: can't create " + filename);
+                return false;
+            }
+            tempFile.delete();
+        } catch (IOException e) {
+            Log.e("TtsService", "Can't create " + filename + " due to exception " + e);
+            return false;
+        }
         mSpeechQueue.add(new SpeechItem(callingApp, text, params, SpeechItem.TEXT_TO_FILE, filename));
         if (!mIsSpeaking) {
             processSpeechQueue();