Merge "Fix media server restart detection mechanism" (230e0120) · Commits · e / os / android_frameworks_base

core/jni/android_media_AudioSystem.cpp

+31 −1

Original line number	Diff line number	Diff line
		@@ -117,10 +117,36 @@ android_media_AudioSystem_getParameters(JNIEnv *env, jobject thiz, jstring keys)
		return env->NewStringUTF(AudioSystem::getParameters(0, c_keys8).string());
		}

		static JNIEnv* AudioSystem_getJNIEnv(bool* needsDetach) {
		*needsDetach = false;
		JNIEnv* env = AndroidRuntime::getJNIEnv();
		if (env == NULL) {
		JavaVMAttachArgs args = {JNI_VERSION_1_4, NULL, NULL};
		JavaVM* vm = AndroidRuntime::getJavaVM();
		int result = vm->AttachCurrentThread(&env, (void*) &args);
		if (result != JNI_OK) {
		ALOGE("thread attach failed: %#x", result);
		return NULL;
		}
		*needsDetach = true;
		}
		return env;
		}

		static void AudioSystem_detachJNI() {
		JavaVM* vm = AndroidRuntime::getJavaVM();
		int result = vm->DetachCurrentThread();
		if (result != JNI_OK) {
		ALOGE("thread detach failed: %#x", result);
		}
		}

		static void
		android_media_AudioSystem_error_callback(status_t err)
		{
		JNIEnv *env = AndroidRuntime::getJNIEnv();
		bool needsDetach = false;
		JNIEnv *env = AudioSystem_getJNIEnv(&needsDetach);

		if (env == NULL) {
		return;
		}
		@@ -142,6 +168,10 @@ android_media_AudioSystem_error_callback(status_t err)
		}

		env->CallStaticVoidMethod(clazz, env->GetStaticMethodID(clazz, "errorCallbackFromNative","(I)V"), error);

		if (needsDetach) {
		AudioSystem_detachJNI();
		}
		}

		static int