[Bug 797020] New: decodebin3-parse: take input locking when updating group-id
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Fri Aug 24 08:32:20 UTC 2018
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
===========================================================
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