require output file for async animated gifs

LearnBoost · Aug 15, 2010 · 32f9128 · 32f9128
1 parent bc54aa1
commit 32f9128
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/async_animated_gif.cpp b/src/async_animated_gif.cpp
@@ -115,6 +115,9 @@ AsyncAnimatedGif::Push(unsigned char *data_buf, int x, int y, int w, int h)
     if (tmp_dir.empty())
         throw "Tmp dir is not set. Use .setTmpDir to set it before pushing.";
 
+    if (output_file.empty())
+        throw "Output file is not set. Use .setOutputFile to set it before pushing.";
+
     push_request *push_req = (push_request *)malloc(sizeof(*push_req));
     if (!push_req)
         throw "malloc in AsyncAnimatedGif::Push failed.";