libavdevice/lavfi: check avfilter_graph_dump return value

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Zhao Zhili 2019-11-21 15:08:18 +08:00 committed by Michael Niedermayer
parent 2205fb2810
commit 19956d01cc

View File

@ -302,9 +302,13 @@ av_cold static int lavfi_read_header(AVFormatContext *avctx)
if (lavfi->dump_graph) {
char *dump = avfilter_graph_dump(lavfi->graph, lavfi->dump_graph);
if (dump != NULL) {
fputs(dump, stderr);
fflush(stderr);
av_free(dump);
} else {
FAIL(AVERROR(ENOMEM));
}
}
/* fill each stream with the information in the corresponding sink */