[FFmpeg-devel] [PATCH 2/2] avformat/swfdec: Use side data to communicate w/h changes to the decoder

[Paul B Mahol]

On 9/2/14, Michael Niedermayer <michaelni at gmx.at> wrote:
> Fixes reading from freed data
> Fixes part of Ticket3539
>
> Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> ---
>  libavformat/swfdec.c |    8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
>
> diff --git a/libavformat/swfdec.c b/libavformat/swfdec.c
> index 0f78b17..ca2a1c4 100644
> --- a/libavformat/swfdec.c
> +++ b/libavformat/swfdec.c
> @@ -353,11 +353,15 @@ static int swf_read_packet(AVFormatContext *s,
> AVPacket *pkt)
>                  avpriv_set_pts_info(vst, 64, 256, swf->frame_rate);
>                  st = vst;
>              }
> -            st->codec->width  = width;
> -            st->codec->height = height;
>
>              if ((res = av_new_packet(pkt, out_len - colormapsize *
> colormapbpp)) < 0)
>                  goto bitmap_end;
> +            if (!st->codec->width && !st->codec->height) {
> +                st->codec->width  = width;
> +                st->codec->height = height;
> +            } else {
> +                ff_add_param_change(pkt, 0, 0, 0, width, height);
> +            }
>              pkt->pos = pos;
>              pkt->stream_index = st->index;
>
> --
> 1.7.9.5
>
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>

probably ok