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Report an error if pitch_lag is zero in AMR-NB decoder.

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This fixes an infinite loop in the decoder on specially
crafted files, and fixes bug 151.

Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
This commit is contained in:
Oana Stratulat 2012-01-05 01:08:05 +02:00 committed by Ronald S. Bultje
parent 3fa646e859
commit 7f09791d28
1 changed files with 4 additions and 0 deletions
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4
libavcodec/amrnbdec.c
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@ -977,6 +977,10 @@ static int amrnb_decode_frame(AVCodecContext *avctx, void *data,
pitch_sharpening(p, subframe, p->cur_frame_mode, &fixed_sparse);
if (fixed_sparse.pitch_lag == 0) {
av_log(avctx, AV_LOG_ERROR, "The file is corrupted, pitch_lag = 0 is not allowed\n");
return AVERROR_INVALIDDATA;
}
ff_set_fixed_vector(p->fixed_vector, &fixed_sparse, 1.0,
AMR_SUBFRAME_SIZE);