vf_yadif: fix missing error handling for avfilter_poll_frame()

a07578f3 · Robert Nagy · Diego Biurrun · 08354bf4 · a07578f3
Commit a07578f3 authored Apr 15, 2012 by Robert Nagy Committed by Diego Biurrun May 07, 2012
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vf_yadif.c libavfilter/vf_yadif.c +4 -0

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--- a/libavfilter/vf_yadif.c
+++ b/libavfilter/vf_yadif.c
@@ -316,11 +316,15 @@ static int poll_frame(AVFilterLink *link)
        return 1;

    val = avfilter_poll_frame(link->src->inputs[0]);
+    if (val <= 0)
+        return val;

    if (val==1 && !yadif->next) { //FIXME change API to not requre this red tape
        if ((ret = avfilter_request_frame(link->src->inputs[0])) < 0)
            return ret;
        val = avfilter_poll_frame(link->src->inputs[0]);
+        if (val <= 0)
+            return val;
    }
    assert(yadif->next || !val);