vf_hwupload: Add missing return value check

Add missing return value checks to suppress build warning and remove noop ff_formats_unref() calling. Note: most filters using ff_formats_ref() didn't have a suitable error handling, it's a potential memory leak issue. Signed-off-by: Jun Zhao <[email protected]> Signed-off-by: Mark Thompson <[email protected]>
zhao85 · Mar 12, 2017 · bf238a6 · bf238a6
1 parent ff17c76
commit bf238a6
Showing 1 changed file with 5 additions and 7 deletions.
diff --git a/libavfilter/vf_hwupload.c b/libavfilter/vf_hwupload.c
@@ -74,17 +74,15 @@ static int hwupload_query_formats(AVFilterContext *avctx)
     if (input_pix_fmts) {
         for (i = 0; input_pix_fmts[i] != AV_PIX_FMT_NONE; i++) {
             err = ff_add_format(&input_formats, input_pix_fmts[i]);
-            if (err < 0) {
-                ff_formats_unref(&input_formats);
+            if (err < 0)
                 goto fail;
-            }
         }
     }
 
-    ff_formats_ref(input_formats, &avctx->inputs[0]->out_formats);
-
-    ff_formats_ref(ff_make_format_list(output_pix_fmts),
-                   &avctx->outputs[0]->in_formats);
+    if ((err = ff_formats_ref(input_formats, &avctx->inputs[0]->out_formats)) < 0 ||
+        (err = ff_formats_ref(ff_make_format_list(output_pix_fmts),
+                              &avctx->outputs[0]->in_formats)) < 0)
+        goto fail;
 
     av_hwframe_constraints_free(&constraints);
     return 0;