[mythtv-commits] Ticket #12566: Can't exit video playback

[MythTV]

#12566: Can't exit video playback
-------------------------------------+-----------------------------
 Reporter:  rafe101@…                |          Owner:  jyavenard
     Type:  Bug Report - General     |         Status:  new
 Priority:  minor                    |      Milestone:  0.28
Component:  MythTV - Video Playback  |        Version:  Master Head
 Severity:  medium                   |     Resolution:
 Keywords:  video,playback,exit      |  Ticket locked:  0
-------------------------------------+-----------------------------

Comment (by drhunt@…):

 Backtrace when its in the broken state
 {{{
 #0  0x00007facec16c687 in ioctl () at ../sysdeps/unix/syscall-
 template.S:84
 #1  0x00007facf017f058 in drmWaitVBlank (fd=99, vbl=0x7ffce9059a80) at
 vsync.cpp:234
 #2  0x00007facf017f90f in DRMVideoSync::WaitForFrame (this=0x41280d0,
 sync_delay=40000) at vsync.cpp:323
 #3  0x00007facf006428d in MythPlayer::AVSync (this=0x6bd6ab0,
 buffer=0x57e7080, limit_delay=false)
     at mythplayer.cpp:1927
 #4  0x00007facf006847b in MythPlayer::DisplayNormalFrame (this=0x6bd6ab0,
 check_prebuffer=true)
     at mythplayer.cpp:2266
 #5  0x00007facf006963e in MythPlayer::VideoLoop (this=0x6bd6ab0) at
 mythplayer.cpp:2470
 #6  0x00007faceffc606c in TV::PlaybackLoop (this=0x41e7c50) at
 tv_play.cpp:1484
 #7  0x00007faceffb3100 in TV::StartTV (tvrec=0x7ffce905a9e0, flags=0,
     selection=std::vector of length 0, capacity 0) at tv_play.cpp:425
 #8  0x000000000048d022 in PlaybackBox::Play (this=0x1a70960, rec=...,
 inPlaylist=false, ignoreBookmark=false,
     ignoreProgStart=false, ignoreLastPlayPos=true,
 underNetworkControl=false) at playbackbox.cpp:2506
 #9  0x000000000048b7de in PlaybackBox::PlayX (this=0x1a70960, pginfo=...,
 ignoreBookmark=false,
     ignoreProgStart=false, ignoreLastPlayPos=true,
 underNetworkControl=false) at playbackbox.cpp:2287
 #10 0x000000000048b43d in PlaybackBox::PlayFromBookmarkOrProgStart
 (this=0x1a70960, item=0x1c64750)
     at playbackbox.cpp:2218
 }}}
 Log shows
 {{{
 Apr 29 20:40:14 mythbox mythfrontend.real: mythfrontend[22788]: I
 CoreContext tv_play.cpp:424 (StartTV) TV::StartTV(): Entering main
 playback loop.
 }}}

 Code looks like this
 {{{
  // Process Events
   424         LOG(VB_GENERAL, LOG_INFO, LOC + "Entering main playback
 loop.");
   425         tv->PlaybackLoop();
   426         LOG(VB_GENERAL, LOG_INFO, LOC + "Exiting main playback
 loop.");
 }}}
 It never exits the PlaybackLoop function. All key presses (ie
 pause,rewind,fastforward etc) work correctly. It is just the exit
 behaviour which is broken.

 I'll try and find some time to debug it further but this is what I've
 found so far. Maybe that helps.

 I've had to teach my wife how to ssh into the box and run killall on the
 frontend as it happens so often.

--
Ticket URL: <https://code.mythtv.org/trac/ticket/12566#comment:9>
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