[Bug 797020] New: decodebin3-parse: take input locking when updating group-id

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797020

            Bug ID: 797020
           Summary: decodebin3-parse: take input locking when updating
                    group-id
    Classification: Platform
           Product: GStreamer
           Version: 1.14.0
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: hoonh83.lee at gmail.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

Dear All

I've encountered issue to play dual video stream (BL/EL).
The issue is that group-id is changed in decodebin3-parse and it is not equal
in between video and audio in streamsyncronizer.
So, streamsynchronizer could not send segment and buffer to
downstream(basesink).

The root cause it that group-id is updated without mutex locking.

===========================================
0:00:32.817321099 10434 0xefd0ba00 DEBUG             decodebin3
gstdecodebin3-parse.c:237:parse_chain_output_probe:<parsebin0:src_0> Got event
stream-start
0:00:32.817865349 10434 0xefd0ba00 FIXME             decodebin3
gstdecodebin3-parse.c:246:parse_chain_output_probe:<parsebin0:src_0> Consider
implementing group-id handling on stream-start event
0:00:32.817900932 10434 0xefd0ba00 DEBUG             decodebin3
gstdecodebin3-parse.c:251:parse_chain_output_probe:<parsebin0:src_0> Got
stream-start, group_id:4, input 0x194d18
0:00:32.818515182 10434 0xf0601a30 DEBUG             decodebin3
gstdecodebin3-parse.c:237:parse_chain_output_probe:<parsebin0:src_1> Got event
stream-start
0:00:32.818548641 10434 0xf0601a30 DEBUG             decodebin3
gstdecodebin3-parse.c:251:parse_chain_output_probe:<parsebin0:src_1> Got
stream-start, group_id:3, input 0x194d18
0:00:32.818587557 10434 0xf0601a30 WARN              decodebin3
gstdecodebin3.c:908:set_input_group_id:<decodebin3-0> Group id changed (4 -> 3)
on input 0x194d18 
0:00:32.818611682 10434 0xf0601a30 DEBUG             decodebin3
gstdecodebin3.c:915:set_input_group_id:<decodebin3-0> Setting current group id
to 3
0:00:32.818869057 10434 0xf0601a30 DEBUG             decodebin3
gstdecodebin3-parse.c:237:parse_chain_output_probe:<parsebin0:src_1> Got event
caps
0:00:32.818924432 10434 0xf0601a30 DEBUG             decodebin3
gstdecodebin3-parse.c:281:parse_chain_output_probe:<parsebin0:src_1> caps
audio/x-eac3, framed=(boolean)true, rate=(int)48000, channels=(int)2,
alignment=(string)iec61937
0:00:32.818289849 10434 0xefd0ba00 DEBUG             decodebin3
gstdecodebin3.c:915:set_input_group_id:<decodebin3-0> Setting current group id
to 4
===========================================================

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.