[gstreamer-bugs] [Bug 597550] New: basesrc: sometimes no buffers produced after PLAYING - PAUSED - PLAYING
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Tue Oct 6 06:27:29 PDT 2009
https://bugzilla.gnome.org/show_bug.cgi?id=597550
GStreamer | gstreamer (core) | 0.10.24
Summary: basesrc: sometimes no buffers produced after PLAYING -
PAUSED - PLAYING
Classification: Desktop
Product: GStreamer
Version: 0.10.24
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: gstreamer (core)
AssignedTo: gstreamer-bugs at lists.sourceforge.net
ReportedBy: ext-lasse.2.laukkanen at nokia.com
QAContact: gstreamer-bugs at lists.sourceforge.net
GNOME target: ---
GNOME version: ---
Created an attachment (id=144887)
--> (https://bugzilla.gnome.org/attachment.cgi?id=144887)
basesrc-state-test.c test app
I have test app that runs "videotestsrc is-live=true ! fakesink async=false"
pipeline and occasionally sets it to PAUSED and back to PLAYING. The problem is
sometimes videotestsrc fails to produce buffers after state change to PLAYING.
The steps leading to this problem seem to be:
1. videotestsrc loop task is waiting for clock
2. state change to PAUSED happens and clock is unscheduled
3. state change to PLAYING happens (loop task thread has not been executed, it
is still waiting for clock!)
4. gst_basesrc_do_sync returns with gst_clock_unscheduled return value and loop
task returns wrong-state error, videotestsrc task is paused and no buffers are
produced
Snippet from log with GST_DEBUG=*:2,GST_STATES:3,basesrc:5
./basesrc-state-test
0:00:03.052952337 10802 0x90087d8 LOG basesrc
gstbasesrc.c:1832:gst_base_src_do_sync:<videotestsrc0> waiting for clock, base
time 150:29:02.746874029, stream
_start 0:00:03.034358924
0:00:03.056341978 10802 0x8f19008 INFO GST_STATES
gstelement.c:2237:gst_element_continue_state:<fakesink0> completed state change
to PAUSED
0:00:03.056367508 10802 0x8f19008 INFO GST_STATES
gstelement.c:2250:gst_element_continue_state:<fakesink0> posting state-changed
PLAYING to PAUSED
0:00:03.056403187 10802 0x8f19008 INFO GST_STATES
gstbin.c:2343:gst_bin_change_state_func:<pipe> child 'fakesink0' changed state
to 3(PAUSED) successfully
0:00:03.056429202 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2883:gst_base_src_change_state:<videotestsrc0> PLAYING->PAUSED
0:00:03.056449043 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2679:gst_base_src_set_playing:<videotestsrc0> unlock
0:00:03.056467205 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2688:gst_base_src_set_playing:<videotestsrc0> unschedule clock
0:00:03.056505042 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2695:gst_base_src_set_playing:<videotestsrc0> live running 0
0:00:03.056525391 10802 0x8f19008 INFO GST_STATES
gstelement.c:2237:gst_element_continue_state:<videotestsrc0> completed state
change to PAUSED
0:00:03.056545301 10802 0x8f19008 INFO GST_STATES
gstelement.c:2250:gst_element_continue_state:<videotestsrc0> posting
state-changed PLAYING to PAUSED
0:00:03.056573966 10802 0x8f19008 INFO GST_STATES
gstbin.c:2364:gst_bin_change_state_func:<pipe> child 'videotestsrc0' changed
state to 3(PAUSED) successfully wi
thout preroll
0:00:03.056604961 10802 0x8f19008 INFO GST_STATES
gstelement.c:2237:gst_element_continue_state:<pipe> completed state change to
PAUSED
0:00:03.056618581 10802 0x8f19008 INFO GST_STATES
gstelement.c:2250:gst_element_continue_state:<pipe> posting state-changed
PLAYING to PAUSED
0:00:03.056658231 10802 0x8f19008 LOG basesrc
gstbasesrc.c:604:gst_base_src_query_latency:<videotestsrc0> latency: live 1,
min 0:00:00.000000000, max 99:99:9
9.999999999
0:00:03.056674294 10802 0x8f19008 LOG basesrc
gstbasesrc.c:924:gst_base_src_default_query:<videotestsrc0> report latency:
live 1, min 0:00:00.000000000, max
99:99:99.999999999
0:00:03.056690237 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:976:gst_base_src_default_query:<videotestsrc0> query latency
returns 1
0:00:03.056732534 10802 0x8f19008 INFO GST_STATES
gstelement.c:2237:gst_element_continue_state:<fakesink0> completed state change
to PLAYING
0:00:03.056747548 10802 0x8f19008 INFO GST_STATES
gstelement.c:2250:gst_element_continue_state:<fakesink0> posting state-changed
PAUSED to PLAYING
0:00:03.056766845 10802 0x8f19008 INFO GST_STATES
gstbin.c:2343:gst_bin_change_state_func:<pipe> child 'fakesink0' changed state
to 4(PLAYING) successfully
0:00:03.056783529 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2866:gst_base_src_change_state:<videotestsrc0> PAUSED->PLAYING
0:00:03.056805585 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2688:gst_base_src_set_playing:<videotestsrc0> unschedule clock
0:00:03.056818438 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2695:gst_base_src_set_playing:<videotestsrc0> live running 1
0:00:03.056830351 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2702:gst_base_src_set_playing:<videotestsrc0> unlock stop
0:00:03.056843618 10802 0x8f19008 DEBUG basesrc
gstbasesrc.c:2716:gst_base_src_set_playing:<videotestsrc0> signal
0:00:03.056856144 10802 0x8f19008 INFO GST_STATES
gstelement.c:2237:gst_element_continue_state:<videotestsrc0> completed state
change to PLAYING
0:00:03.056869260 10802 0x8f19008 INFO GST_STATES
gstelement.c:2250:gst_element_continue_state:<videotestsrc0> posting
state-changed PAUSED to PLAYING
0:00:03.056888064 10802 0x8f19008 INFO GST_STATES
gstbin.c:2343:gst_bin_change_state_func:<pipe> child 'videotestsrc0' changed
state to 4(PLAYING) successfully
0:00:03.056904879 10802 0x8f19008 INFO GST_STATES
gstelement.c:2237:gst_element_continue_state:<pipe> completed state change to
PLAYING
0:00:03.056918018 10802 0x8f19008 INFO GST_STATES
gstelement.c:2250:gst_element_continue_state:<pipe> posting state-changed
PAUSED to PLAYING
0:00:03.056970724 10802 0x90087d8 LOG basesrc
gstbasesrc.c:1837:gst_base_src_do_sync:<videotestsrc0> clock entry done: 2
0:00:03.056985178 10802 0x90087d8 DEBUG basesrc
gstbasesrc.c:2018:gst_base_src_get_range:<videotestsrc0> clock was unscheduled
(2), returning WRONG_STATE
0:00:03.057000212 10802 0x90087d8 INFO basesrc
gstbasesrc.c:2218:gst_base_src_loop:<videotestsrc0> pausing after
gst_base_src_get_range() = wrong-state
0:00:03.057013377 10802 0x90087d8 DEBUG basesrc
gstbasesrc.c:2352:gst_base_src_loop:<videotestsrc0> pausing task, reason
wrong-state
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