[FFmpeg-devel] [PATCH] avcodec/cbs_mpeg2: create a reference to the existing buffer when decomposing slice units
Mark Thompson
sw at jkqxz.net
Tue May 1 02:03:34 EEST 2018
On 27/04/18 23:36, James Almer wrote:
> Signed-off-by: James Almer <jamrial at gmail.com>
> ---
> libavcodec/cbs_mpeg2.c | 9 ++-------
> 1 file changed, 2 insertions(+), 7 deletions(-)
>
> diff --git a/libavcodec/cbs_mpeg2.c b/libavcodec/cbs_mpeg2.c
> index 989daf0a4d..8ca47061fe 100644
> --- a/libavcodec/cbs_mpeg2.c
> +++ b/libavcodec/cbs_mpeg2.c
> @@ -191,16 +191,11 @@ static int cbs_mpeg2_read_unit(CodedBitstreamContext *ctx,
> len = unit->data_size;
>
> slice->data_size = len - pos / 8;
> - slice->data_ref = av_buffer_alloc(slice->data_size +
> - AV_INPUT_BUFFER_PADDING_SIZE);
> + slice->data_ref = av_buffer_ref(unit->data_ref);
> if (!slice->data_ref)
> return AVERROR(ENOMEM);
> - slice->data = slice->data_ref->data;
> + slice->data = unit->data + pos / 8;
>
> - memcpy(slice->data,
> - unit->data + pos / 8, slice->data_size);
> - memset(slice->data + slice->data_size, 0,
> - AV_INPUT_BUFFER_PADDING_SIZE);
> slice->data_bit_start = pos % 8;
>
> } else {
>
LGTM.
Thanks,
- Mark
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