Merge change 5701 into donut

* changes:
  Expose in SynthProxy the query for the TTS supported and current language.

packages/TtsService/jni/android_tts_SynthProxy.cpp

@@ -278,6 +278,33 @@ android_tts_SynthProxy_native_finalize(JNIEnv *env, jobject thiz, jint jniData)
 }
 
 
+static int
+android_tts_SynthProxy_isLanguageAvailable(JNIEnv *env, jobject thiz, jint jniData,
+        jstring language, jstring country, jstring variant)
+{
+    int result = TTS_LANG_NOT_SUPPORTED;
+
+    if (jniData == 0) {
+        LOGE("android_tts_SynthProxy_isLanguageAvailable(): invalid JNI data");
+        return result;
+    }
+
+    SynthProxyJniStorage* pSynthData = (SynthProxyJniStorage*)jniData;
+    const char *langNativeString = env->GetStringUTFChars(language, 0);
+    const char *countryNativeString = env->GetStringUTFChars(country, 0);
+    const char *variantNativeString = env->GetStringUTFChars(variant, 0);
+    // TODO check return codes
+    if (pSynthData->mNativeSynthInterface) {
+        result = pSynthData->mNativeSynthInterface->isLanguageAvailable(langNativeString,
+                countryNativeString, variantNativeString);
+    }
+    env->ReleaseStringUTFChars(language, langNativeString);
+    env->ReleaseStringUTFChars(country, countryNativeString);
+    env->ReleaseStringUTFChars(variant, variantNativeString);
+    return result;
+}
+
+
 static void
 android_tts_SynthProxy_setLanguage(JNIEnv *env, jobject thiz, jint jniData,
         jstring language, jstring country, jstring variant)
@@ -533,24 +560,34 @@ LOGI("android_tts_SynthProxy_playAudioBuffer");
 }
 
 
-JNIEXPORT jstring JNICALL
+static jobjectArray
 android_tts_SynthProxy_getLanguage(JNIEnv *env, jobject thiz, jint jniData)
 {
     if (jniData == 0) {
         LOGE("android_tts_SynthProxy_getLanguage(): invalid JNI data");
-        return env->NewStringUTF("");
+        return NULL;
     }
 
     SynthProxyJniStorage* pSynthData = (SynthProxyJniStorage*)jniData;
-    size_t bufSize = 100;
+
-    char buf[bufSize];
-    memset(buf, 0, bufSize);
-    // TODO check return codes
     if (pSynthData->mNativeSynthInterface) {
-        // TODO use the correct getLanguage()
+        size_t bufSize = 100;
-        //pSynthData->mNativeSynthInterface->getLanguage(buf, &bufSize);
+        char lang[bufSize];
+        char country[bufSize];
+        char variant[bufSize];
+        memset(lang, 0, bufSize);
+        memset(country, 0, bufSize);
+        memset(variant, 0, bufSize);
+        jobjectArray retLocale = (jobjectArray)env->NewObjectArray(3,
+                env->FindClass("java/lang/String"), env->NewStringUTF(""));
+        pSynthData->mNativeSynthInterface->getLanguage(lang, country, variant);
+        env->SetObjectArrayElement(retLocale, 0, env->NewStringUTF(lang));
+        env->SetObjectArrayElement(retLocale, 1, env->NewStringUTF(country));
+        env->SetObjectArrayElement(retLocale, 2, env->NewStringUTF(variant));
+        return retLocale;
+    } else {
+        return NULL;
     }
-    return env->NewStringUTF(buf);
 }
 
 
@@ -588,6 +625,10 @@ static JNINativeMethod gMethods[] = {
         "(ILjava/lang/String;Ljava/lang/String;)V",
         (void*)android_tts_SynthProxy_synthesizeToFile
     },
+    {   "native_isLanguageAvailable",
+        "(ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;)I",
+        (void*)android_tts_SynthProxy_isLanguageAvailable
+    },
     {   "native_setLanguage",
         "(ILjava/lang/String;Ljava/lang/String;Ljava/lang/String;)V",
         (void*)android_tts_SynthProxy_setLanguage
@@ -609,7 +650,7 @@ static JNINativeMethod gMethods[] = {
         (void*)android_tts_SynthProxy_playAudioBuffer
     },
     {   "native_getLanguage",
-        "(I)Ljava/lang/String;",
+        "(I)[Ljava/lang/String;",
         (void*)android_tts_SynthProxy_getLanguage
     },
     {   "native_getRate",

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

@@ -68,12 +68,20 @@ public class SynthProxy {
     // TODO add IPA methods
 
     /**
-     * Sets the language
+     * Queries for language support.
+     * Return codes are defined in android.speech.tts.TextToSpeech
+     */
+    public int isLanguageAvailable(String language, String country, String variant) {
+        return native_isLanguageAvailable(mJniData, language, country, variant);
+    }
+
+    /**
+     * Sets the language.
      */
     public void setLanguage(String language, String country, String variant) {
         native_setLanguage(mJniData, language, country, variant);
     }
-    
+
     /**
      * Loads the language: it's not set, but prepared for use later.
      */
@@ -82,42 +90,42 @@ public class SynthProxy {
     }
 
     /**
-     * Sets the speech rate
+     * Sets the speech rate.
      */
     public final void setSpeechRate(int speechRate) {
         native_setSpeechRate(mJniData, speechRate);
     }
 
     /**
-     * Sets the pitch of the synthesized voice
+     * Sets the pitch of the synthesized voice.
      */
     public final void setPitch(int pitch) {
         native_setPitch(mJniData, pitch);
     }
 
     /**
-     * Plays the given audio buffer
+     * Plays the given audio buffer.
      */
     public void playAudioBuffer(int bufferPointer, int bufferSize) {
         native_playAudioBuffer(mJniData, bufferPointer, bufferSize);
     }
 
     /**
-     * Gets the currently set language
+     * Returns the currently set language, country and variant information.
      */
-    public String getLanguage() {
+    public String[] getLanguage() {
         return native_getLanguage(mJniData);
     }
 
     /**
-     * Gets the currently set rate
+     * Gets the currently set rate.
      */
     public int getRate() {
         return native_getRate(mJniData);
     }
 
     /**
-     * Shuts down the native synthesizer
+     * Shuts down the native synthesizer.
      */
     public void shutdown()  {
         native_shutdown(mJniData);
@@ -154,20 +162,23 @@ public class SynthProxy {
 
     private native final void native_synthesizeToFile(int jniData, String text, String filename);
 
+    private native final int  native_isLanguageAvailable(int jniData, String language,
+            String country, String variant);
+
     private native final void native_setLanguage(int jniData, String language, String country,
             String variant);
-    
+
     private native final void native_loadLanguage(int jniData, String language, String country,
             String variant);
 
     private native final void native_setSpeechRate(int jniData, int speechRate);
-    
+
     private native final void native_setPitch(int jniData, int speechRate);
 
     // TODO add buffer format
     private native final void native_playAudioBuffer(int jniData, int bufferPointer, int bufferSize);
 
-    private native final String native_getLanguage(int jniData);
+    private native final String[] native_getLanguage(int jniData);
 
     private native final int native_getRate(int jniData);