[Bug 653091] [dv1394src] Make the internal clock thread-safe

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=653091
  GStreamer | gst-plugins-good | git

--- Comment #1 from Florent Thiery <florent.thiery at ubicast.eu> 2011-06-22 09:29:54 UTC ---
Behaviour example: pipeline with e.g. dv1394src and alsasink freezes after some
time. Several clock timing jumps can be seen before the freeze, running time
and timestamping gets affected as well:

0:00:32.044433901 24339  0xa001ed8 LOG                1394clock
gst1394clock.c:136:gst_1394_clock_get_internal_time:<dv1394clock> result
0:03:08.724750000
0:00:32.044448560 24339  0xa001ed8 DEBUG              GST_CLOCK
gstclock.c:955:gst_clock_get_internal_time:<dv1394clock> internal time
0:03:08.724750000
0:00:32.044462655 24339  0xa001ed8 DEBUG              GST_CLOCK
gstclock.c:1000:gst_clock_get_time:<dv1394clock> adjusted time
0:03:08.724750000
0:00:32.044475218 24339  0xa001ed8 DEBUG              GST_CLOCK
gstsystemclock.c:680:gst_system_clock_id_wait_jitter_unlocked: entry 0xa027188
finished, diff -250000
0:00:32.044488892 24339  0xa001ed8 DEBUG              GST_CLOCK
gstclock.c:514:gst_clock_id_wait:<dv1394clock> done waiting entry 0xa027188,
res: 0
0:02:38.611387980 24339  0xa001e78 LOG                1394clock
gst1394clock.c:121:gst_1394_clock_get_internal_time:<dv1394clock> overflow
2037015771 to 1989648722
0:02:38.611431236 24339  0xa001e78 LOG                1394clock
gst1394clock.c:136:gst_1394_clock_get_internal_time:<dv1394clock> result
0:05:15.303250000

(this is an *unedited* log portion)

Test pipeline: GST_DEBUG_NO_COLOR=1 GST_DEBUG=*CLOCK:5,1394clock:5
gst-launch-0.10 dv1394src ! identity ! dvdemux name=demux ! queue ! dvdec !
ffmpegcolorspace ! xvimagesink demux. ! queue ! audioconvert ! alsasink
device=hw:0

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