Add functions for getting the Surface jobject and setting the surface size with an existing JNIEnv

Signed-off-by: Martin Storsjö <martin@martin.st>

vlc-android/jni/vout.c

@@ -50,20 +50,26 @@ void jni_UnlockAndroidSurface() {
     pthread_mutex_unlock(&vout_android_lock);
 }
 
-void jni_SetAndroidSurfaceSize(int width, int height, int visible_width, int visible_height, int sar_num, int sar_den)
+void jni_SetAndroidSurfaceSizeEnv(JNIEnv *p_env, int width, int height, int visible_width, int visible_height, int sar_num, int sar_den)
 {
     if (vout_android_gui == NULL)
         return;
 
-    JNIEnv *p_env;
-
-    (*myVm)->AttachCurrentThread (myVm, &p_env, NULL);
     jclass cls = (*p_env)->GetObjectClass (p_env, vout_android_gui);
     jmethodID methodId = (*p_env)->GetMethodID (p_env, cls, "setSurfaceSize", "(IIIIII)V");
 
     (*p_env)->CallVoidMethod (p_env, vout_android_gui, methodId, width, height, visible_width, visible_height, sar_num, sar_den);
 
     (*p_env)->DeleteLocalRef(p_env, cls);
+}
+
+void jni_SetAndroidSurfaceSize(int width, int height, int visible_width, int visible_height, int sar_num, int sar_den)
+{
+    JNIEnv *p_env;
+
+    (*myVm)->AttachCurrentThread (myVm, &p_env, NULL);
+    jni_SetAndroidSurfaceSizeEnv(p_env, width, height, visible_width, visible_height, sar_num, sar_den);
+
     (*myVm)->DetachCurrentThread (myVm);
 }