Fix a segfault with large window size.
Signed-off-by: Nicolas George <[email protected]>
---
libavfilter/avf_showspectrum.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavfilter/avf_showspectrum.c b/libavfilter/avf_showspectrum.c
index 7bf3aab..764a000 100644
--- a/libavfilter/avf_showspectrum.c
+++ b/libavfilter/avf_showspectrum.c
@@ -177,6 +177,11 @@ static int config_output(AVFilterLink *outlink)
av_rdft_end(s->rdft);
s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
+ if (!s->rdft) {
+ av_log(ctx, AV_LOG_ERROR, "Unable to allocate RDFT context. "
+ "Maybe window too high.\n");
+ return AVERROR(EINVAL);
+ }
s->rdft_bits = rdft_bits;
/* RDFT buffers: x2 for each (display) channel buffer.
--
2.0.1
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