From 7e5c5fa5fc8f99be66341b95257d42fa2d1f0fbb Mon Sep 17 00:00:00 2001
From: Nicolas George <nicolas.george@normalesup.org>
Date: Thu, 10 Jan 2013 19:44:45 +0100
Subject: [PATCH] lavfi/vf_overlay: check that filter_frame does not return
 EAGAIN.

EAGAIN is used internally in the code; it currently does not make
sense as a return code from the next filter.

Should fix CID966655.
---
 libavfilter/vf_overlay.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libavfilter/vf_overlay.c b/libavfilter/vf_overlay.c
index b71ef41392..d44677fddc 100644
--- a/libavfilter/vf_overlay.c
+++ b/libavfilter/vf_overlay.c
@@ -473,6 +473,7 @@ static int try_filter_frame(AVFilterContext *ctx, AVFilterBufferRef *mainpic)
     if (over->overpicref)
         blend_image(ctx, mainpic, over->overpicref, over->x, over->y);
     ret = ff_filter_frame(ctx->outputs[0], mainpic);
+    av_assert1(ret != AVERROR(EAGAIN));
     over->frame_requested = 0;
     return ret;
 }