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avcodec/decode: ignore unsupported skip samples packet side data values

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Same as in the AV_FRAME_FLAG_DISCARD codepath, ensure avci->skip_samples is not
negative.

Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2022-01-31 22:56:46 -03:00
parent 3b9bd63ad9
commit 22d6d2b481
1 changed files with 1 additions and 0 deletions
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libavcodec/decode.c
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@ -366,6 +366,7 @@ static inline int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame,
side= av_packet_get_side_data(avci->last_pkt_props, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
if(side && side_size>=10) {
avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
avci->skip_samples = FFMAX(0, avci->skip_samples);
discard_padding = AV_RL32(side + 4);
av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
avci->skip_samples, (int)discard_padding);