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media: dvb_demux: Better handle discontinuity errors

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When a packet discontinuity happens, it is not just the payload
that was lost. The headers are lost too. So, the max size is not
184 but, instead 188.

Also, while printing warnings, make a distinction between
MPEG-TS indicated discontinuity and detected one.

Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Mauro Carvalho Chehab 2018-01-23 13:30:42 -05:00 committed by Mauro Carvalho Chehab
parent 9893b905e7
commit fed488b395
1 changed files with 6 additions and 2 deletions
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8
drivers/media/dvb-core/dvb_demux.c
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@ -310,8 +310,9 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed,
if (!ccok || dc_i) {
#ifdef CONFIG_DVB_DEMUX_SECTION_LOSS_LOG
dprintk("dvb_demux.c discontinuity detected %d bytes lost\n",
count);
dprintk("discontinuity %s: %d bytes lost\n",
!ccok ? "detected" : "indicated",
count + 4);
/*
* those bytes under sume circumstances will again be reported
* in the following dvb_dmx_swfilter_section_new
@ -320,6 +321,9 @@ static int dvb_dmx_swfilter_section_packet(struct dvb_demux_feed *feed,
/*
* Discontinuity detected. Reset pusi_seen to
* stop feeding of suspicious data until next PUSI=1 arrives
*
* FIXME: does it make sense if the MPEG-TS is the one
* reporting discontinuity?
*/
feed->pusi_seen = false;
dvb_dmx_swfilter_section_new(feed);