Adding splitting to the TTS to guard against extremely long strings. (1aacdcfa) · Commits · e / os / android_frameworks_base

packages/TtsService/src/android/tts/TtsService.java

+30 −5

Original line number	Diff line number	Diff line
		@@ -89,6 +89,8 @@ public class TtsService extends Service implements OnCompletionListener {
		}
		}

		private static final int MAX_SPEECH_ITEM_CHAR_LENGTH = 4000;

		private static final String ACTION = "android.intent.action.USE_TTS";
		private static final String CATEGORY = "android.intent.category.TTS";
		private static final String PKGNAME = "android.tts";
		@@ -108,7 +110,6 @@ public class TtsService extends Service implements OnCompletionListener {
		private final ReentrantLock synthesizerLock = new ReentrantLock();

		private SynthProxy nativeSynth;

		@Override
		public void onCreate() {
		super.onCreate();
		@@ -145,13 +146,11 @@ public class TtsService extends Service implements OnCompletionListener {


		private void setDefaultSettings() {

		// TODO handle default language
		setLanguage("eng", "USA", "");

		// speech rate
		setSpeechRate(getDefaultRate());

		}


		@@ -445,6 +444,33 @@ public class TtsService extends Service implements OnCompletionListener {
		Log.i("TTS callback", "dispatch completed to " + N);
		}

		private SpeechItem splitCurrentTextIfNeeded(SpeechItem currentSpeechItem){
		if (currentSpeechItem.mText.length() < MAX_SPEECH_ITEM_CHAR_LENGTH){
		return currentSpeechItem;
		} else {
		ArrayList<SpeechItem> splitItems = new ArrayList<SpeechItem>();
		int start = 0;
		int end = start + MAX_SPEECH_ITEM_CHAR_LENGTH - 1;
		String splitText;
		SpeechItem splitItem;
		while (end < currentSpeechItem.mText.length()){
		splitText = currentSpeechItem.mText.substring(start, end);
		splitItem = new SpeechItem(splitText, null, SpeechItem.SPEECH);
		splitItems.add(splitItem);
		start = end;
		end = start + MAX_SPEECH_ITEM_CHAR_LENGTH - 1;
		}
		splitText = currentSpeechItem.mText.substring(start);
		splitItem = new SpeechItem(splitText, null, SpeechItem.SPEECH);
		splitItems.add(splitItem);
		mSpeechQueue.remove(0);
		for (int i = splitItems.size() - 1; i >= 0; i--){
		mSpeechQueue.add(0, splitItems.get(i));
		}
		return mSpeechQueue.get(0);
		}
		}

		private void processSpeechQueue() {
		boolean speechQueueAvailable = false;
		try {
		@@ -466,8 +492,7 @@ public class TtsService extends Service implements OnCompletionListener {
		Log.i("TTS processing: ", currentSpeechItem.mText);
		if (sr == null) {
		if (currentSpeechItem.mType == SpeechItem.SPEECH) {
		// TODO: Split text up into smaller chunks before accepting
		// them for processing.
		currentSpeechItem = splitCurrentTextIfNeeded(currentSpeechItem);
		speakInternalOnly(currentSpeechItem.mText,
		currentSpeechItem.mParams);
		} else {