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avcodec/aptxdec: Process data in complete blocks only

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The APTX (HD) decoder decodes blocks of four (six) bytes to four
output samples. It makes no sense to handle incomplete blocks:
They would just lead to synchronization errors, in which case
the complete frame is discarded. So only handle complete blocks.
This also avoids reading from the packet's padding and writing
into the frame's padding.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2021-08-29 22:18:52 +02:00
parent c8707c105f
commit e6bfb14223
1 changed files with 1 additions and 1 deletions
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libavcodec/aptxdec.c
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@ -151,7 +151,7 @@ static int aptx_decode_frame(AVCodecContext *avctx, AVFrame *frame,
/* get output buffer */ /* get output buffer */
frame->ch_layout.nb_channels = NB_CHANNELS; frame->ch_layout.nb_channels = NB_CHANNELS;
frame->format = AV_SAMPLE_FMT_S32P; frame->format = AV_SAMPLE_FMT_S32P;
frame->nb_samples = 4 * avpkt->size / s->block_size; frame->nb_samples = 4 * (avpkt->size / s->block_size);
if ((ret = ff_get_buffer(avctx, frame, 0)) < 0) if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
return ret; return ret;