[FFmpeg-cvslog] avformat/mpegts: Check if ready on SCTE reception

[Anthony Delannoy]

ffmpeg | branch: master | Anthony Delannoy <anthony.2lannoy at gmail.com> | Tue Sep  3 17:54:24 2019 +0200| [39f129593756e3e270ed3881ca076627f30e1eb7] | committer: Marton Balint

avformat/mpegts: Check if ready on SCTE reception

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 at passwd.hu>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=39f129593756e3e270ed3881ca076627f30e1eb7
---

 libavformat/mpegts.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index 58902527c5..0415ceea02 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -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);