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qdm2: make sure channels is not <= 0 and set channel layout

This commit is contained in:
Justin Ruggles 2012-10-22 18:53:19 -04:00
parent e3d6ab5704
commit be2ab8b75a
1 changed files with 4 additions and 1 deletions
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5
libavcodec/qdm2.c
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@ -36,6 +36,7 @@
#include <stdio.h>
#define BITSTREAM_READER_LE
#include "libavutil/audioconvert.h"
#include "avcodec.h"
#include "get_bits.h"
#include "dsputil.h"
@ -1768,8 +1769,10 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx)
avctx->channels = s->nb_channels = s->channels = AV_RB32(extradata);
extradata += 4;
if (s->channels > MPA_MAX_CHANNELS)
if (s->channels <= 0 || s->channels > MPA_MAX_CHANNELS)
return AVERROR_INVALIDDATA;
avctx->channel_layout = avctx->channels == 2 ? AV_CH_LAYOUT_STEREO :
AV_CH_LAYOUT_MONO;
avctx->sample_rate = AV_RB32(extradata);
extradata += 4;