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ac3dec: fix out of array read

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Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-12-12 01:21:24 +01:00
parent a202541f9b
commit 2fb240ddb6
1 changed files with 1 additions and 2 deletions
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3
libavcodec/ac3dec.c
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@ -1386,12 +1386,11 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
channel_map = ff_ac3_dec_channel_map[s->output_mode & ~AC3_OUTPUT_LFEON][s->lfe_on];
for (ch = 0; ch < AC3_MAX_CHANNELS; ch++) {
output[ch] = s->output[ch];
s->outptr[ch] = s->output[ch];
}
for (ch = 0; ch < s->channels; ch++) {
if (ch < s->out_channels)
s->outptr[channel_map[ch]] = (float *)s->frame.data[ch];
else
s->outptr[ch] = s->output[ch];
}
for (blk = 0; blk < s->num_blocks; blk++) {
if (!err && decode_audio_block(s, blk)) {