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smacker: validate number of channels

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(cherry picked from commit e190e453bd)

Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Justin Ruggles
2011-09-21 11:37:51 -04:00
committed by Reinhard Tartler
parent 3b7a1ba90e
commit ef7a4df458
1 changed files with 4 additions and 0 deletions
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4
libavcodec/smacker.c
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@@ -559,6 +559,10 @@ static av_cold int decode_end(AVCodecContext *avctx)
static av_cold int smka_decode_init(AVCodecContext *avctx) static av_cold int smka_decode_init(AVCodecContext *avctx)
{ {
if (avctx->channels < 1 || avctx->channels > 2) {
av_log(avctx, AV_LOG_ERROR, "invalid number of channels\n");
return AVERROR(EINVAL);
}
avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO; avctx->channel_layout = (avctx->channels==2) ? AV_CH_LAYOUT_STEREO : AV_CH_LAYOUT_MONO;
avctx->sample_fmt = avctx->bits_per_coded_sample == 8 ? AV_SAMPLE_FMT_U8 : AV_SAMPLE_FMT_S16; avctx->sample_fmt = avctx->bits_per_coded_sample == 8 ? AV_SAMPLE_FMT_U8 : AV_SAMPLE_FMT_S16;
return 0; return 0;