jintArray Java_android_filterfw_core_GLFrame_getNativeInts(JNIEnv* env, jobject thiz) {
  GLFrame* frame = ConvertFromJava<GLFrame>(env, thiz);
  if (frame && frame->Size() > 0 && (frame->Size() % sizeof(jint) == 0)) {
    jintArray result = env->NewIntArray(frame->Size() / sizeof(jint));
    jint* data = env->GetIntArrayElements(result, NULL);
    frame->CopyDataTo(reinterpret_cast<uint8_t*>(data), frame->Size());
    env->ReleaseIntArrayElements(result, data, 0);
    return result;
   }
   return NULL;
}
jbyteArray Java_android_filterfw_core_GLFrame_getNativeData(JNIEnv* env, jobject thiz) {
  GLFrame* frame = ConvertFromJava<GLFrame>(env, thiz);
  if (frame && frame->Size() > 0) {
    jbyteArray result = env->NewByteArray(frame->Size());
    jbyte* data = env->GetByteArrayElements(result, NULL);
    frame->CopyDataTo(reinterpret_cast<uint8_t*>(data), frame->Size());
    env->ReleaseByteArrayElements(result, data, 0);
    return result;
  }
  return NULL;
}
jfloatArray Java_android_filterfw_core_GLFrame_getNativeFloats(JNIEnv* env, jobject thiz) {
  GLFrame* frame = ConvertFromJava<GLFrame>(env, thiz);
  if (frame && frame->Size() > 0) {
    // Create the result array
    jfloatArray result = env->NewFloatArray(frame->Size());
    jfloat* float_array = env->GetFloatArrayElements(result, NULL);

    // Read the frame pixels
    uint8_t* pixels = new uint8_t[frame->Size()];
    frame->CopyDataTo(pixels, frame->Size());

    // Convert them to floats
    ConvertRGBAToFloats(pixels, frame->Size(), float_array);

    // Clean-up
    delete[] pixels;
    env->ReleaseFloatArrayElements(result, float_array, 0);
    return result;
  }
  return NULL;
}
jboolean Java_android_filterfw_core_GLFrame_getNativeBitmap(JNIEnv* env,
                                                            jobject thiz,
                                                            jobject bitmap) {
  GLFrame* frame = ConvertFromJava<GLFrame>(env, thiz);
  if (frame && bitmap) {
    uint8_t* pixels;
    const int result = AndroidBitmap_lockPixels(env, bitmap, reinterpret_cast<void**>(&pixels));
    if (result == ANDROID_BITMAP_RESUT_SUCCESS) {
      frame->CopyDataTo(pixels, frame->Size());
      return (AndroidBitmap_unlockPixels(env, bitmap) == ANDROID_BITMAP_RESUT_SUCCESS);
    }
  }
  return JNI_FALSE;
}