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alsdec: limit avctx->bits_per_raw_sample to 32

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avctx->bits_per_raw_sample is used in get_sbits_long, which only
supports up to 32 bits.

CC: libav-stable@libav.org
Signed-off-by: Andreas Cadhalpun <Andreas.Cadhalpun@googlemail.com>
Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Andreas Cadhalpun 2015-04-18 20:29:13 +02:00 committed by Anton Khirnov
parent 8fc8024ea5
commit e191aaca44
1 changed files with 6 additions and 0 deletions
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6
libavcodec/alsdec.c
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@ -1641,6 +1641,12 @@ static av_cold int decode_init(AVCodecContext *avctx)
avctx->sample_fmt = sconf->resolution > 1
? AV_SAMPLE_FMT_S32 : AV_SAMPLE_FMT_S16;
avctx->bits_per_raw_sample = (sconf->resolution + 1) * 8;
if (avctx->bits_per_raw_sample > 32) {
av_log(avctx, AV_LOG_ERROR, "Bits per raw sample %d larger than 32.\n",
avctx->bits_per_raw_sample);
ret = AVERROR_INVALIDDATA;
goto fail;
}
}
// set maximum Rice parameter for progressive decoding based on resolution