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Code Issues Releases Activity

ac3dec: Increment channel pointers only once per channel

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If the channel mapping map multiple output channels to one
input channel, we should only increment the actual pointer once.

Cc: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
This commit is contained in:
Martin Storsjö
2013-07-11 16:30:18 +03:00
parent 886e1b36f5
commit 68e57cde68
1 changed files with 3 additions and 3 deletions
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6
libavcodec/ac3dec.c
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@@ -1393,10 +1393,10 @@ 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(s->outptr[channel_map[ch]], output[ch], 1024); memcpy(s->outptr[channel_map[ch]], 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]];
s->outptr[channel_map[ch]] += AC3_BLOCK_SIZE; for (ch = 0; ch < s->channels; ch++)
} s->outptr[ch] += AC3_BLOCK_SIZE;
} }
/* keep last block for error concealment in next frame */ /* keep last block for error concealment in next frame */