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avformat/swfdec: Use side data to communicate w/h changes to the decoder

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Fixes reading from freed data
Fixes part of Ticket3539

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2014-09-02 05:22:26 +02:00
parent 1587989518
commit 1c55d0ff32
1 changed files with 6 additions and 2 deletions
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8
libavformat/swfdec.c
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@ -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;