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avformat/mpegts: Check if ready on SCTE reception

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On some DVB stream SCTE-35 data packet are available before the end of
MpegTSContext initialization. We have to check if it is the case to
avoid a SEGFAULT.

Signed-off-by: Marton Balint <cus@passwd.hu>
(cherry picked from commit 39f1295937)
This commit is contained in:
Anthony Delannoy 2019-09-03 17:54:24 +02:00 committed by Marton Balint
parent 0f8e2a0b86
commit 611eb95943
1 changed files with 7 additions and 0 deletions
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7
libavformat/mpegts.c
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@ -1725,6 +1725,13 @@ static void scte_data_cb(MpegTSFilter *filter, const uint8_t *section,
if (idx < 0)
return;
/**
* In case we receive an SCTE-35 packet before mpegts context is fully
* initialized.
*/
if (!ts->pkt)
return;
new_data_packet(section, section_len, ts->pkt);
ts->pkt->stream_index = idx;
prg = av_find_program_from_stream(ts->stream, NULL, idx);