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lavfi/avf_showspectrum: check RDFT context init. 

Fix a segfault with large window size.
This commit is contained in:
Nicolas George 2014-08-03 20:39:59 +02:00
parent 7c10e32ae5
commit 638eec2ac3
1 changed files with 5 additions and 0 deletions
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5
libavfilter/avf_showspectrum.c
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@ -177,6 +177,11 @@ static int config_output(AVFilterLink *outlink)
av_rdft_end(s->rdft); av_rdft_end(s->rdft);
s->rdft = av_rdft_init(rdft_bits, DFT_R2C); s->rdft = av_rdft_init(rdft_bits, DFT_R2C);
if (!s->rdft) {
av_log(ctx, AV_LOG_ERROR, "Unable to create RDFT context. "
"The window size might be too high.\n");
return AVERROR(EINVAL);
}
s->rdft_bits = rdft_bits; s->rdft_bits = rdft_bits;
/* RDFT buffers: x2 for each (display) channel buffer. /* RDFT buffers: x2 for each (display) channel buffer.