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qdm2: check that the FFT size is a power of 2
author
Anton Khirnov
<anton@khirnov.net>
Tue, 9 Apr 2013 13:25:20 +0000
(15:25 +0200)
committer
Anton Khirnov
<anton@khirnov.net>
Wed, 17 Apr 2013 08:56:11 +0000
(10:56 +0200)
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
libavcodec/qdm2.c
patch
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diff --git
a/libavcodec/qdm2.c
b/libavcodec/qdm2.c
index
91ef524
..
1e0811c
100644
(file)
--- a/
libavcodec/qdm2.c
+++ b/
libavcodec/qdm2.c
@@
-1835,6
+1835,10
@@
static av_cold int qdm2_decode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR, "Unknown FFT order (%d), contact the developers!\n", s->fft_order);
return -1;
}
+ if (s->fft_size != (1 << (s->fft_order - 1))) {
+ av_log(avctx, AV_LOG_ERROR, "FFT size %d not power of 2.\n", s->fft_size);
+ return AVERROR_INVALIDDATA;
+ }
ff_rdft_init(&s->rdft_ctx, s->fft_order, IDFT_C2R);
ff_mpadsp_init(&s->mpadsp);