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ac3dec: split out pointer update loop for saftey

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-04 06:09:43 +01:00
parent 4e0738cec9
commit b888cea9cb
1 changed files with 2 additions and 1 deletions
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3
libavcodec/ac3dec.c
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@ -1400,8 +1400,9 @@ static int ac3_decode_frame(AVCodecContext * avctx, void *data,
if (err) if (err)
for (ch = 0; ch < s->out_channels; ch++) for (ch = 0; ch < s->out_channels; ch++)
memcpy(((float*)s->frame.data[ch]) + AC3_BLOCK_SIZE*blk, output[ch], 1024); memcpy(((float*)s->frame.data[ch]) + AC3_BLOCK_SIZE*blk, output[ch], 1024);
for (ch = 0; ch < s->out_channels; ch++) { for (ch = 0; ch < s->out_channels; ch++)
output[ch] = s->outptr[channel_map[ch]]; output[ch] = s->outptr[channel_map[ch]];
for (ch = 0; ch < s->out_channels; ch++) {
if (!ch || channel_map[ch]) if (!ch || channel_map[ch])
s->outptr[channel_map[ch]] += AC3_BLOCK_SIZE; s->outptr[channel_map[ch]] += AC3_BLOCK_SIZE;
} }