change property mode on decklinkvideosrc while playing

[jeffanderson]

I am unable to get video to start playing the second time, when I go from
NULL(Default)->PLAYING->READY->PLAYING.  I tried doing this without changing
any properties of the elements in the pipeline.  However the step from READY
to PLAYING fails, it returns GST_STATE_CHANGE_ASYNC, which I then use
gst_element_get_state with an infinite timeout.  This returns
GST_STATE_CHANGE_FAILURE. 

Do I need to do anything to the pipeline to get this to work?

Below is the output from GST_DEBUG=decklink*:6 after setting state to
playing the second time.

setting state: GST_STATE_PLAYING
0:00:10.119441306 ^[[336m 2195^[[00m      0x24e5c90 ^[[33;01mLOG    ^[[00m
^[[00m            decklink
gstdecklink.cpp:936:gst_decklink_clock_get_internal_time:<
GstDecklinkInputClock>^[[00m result 0:00:00.000000000 time
99:99:99.999999999 last time 0:00:00.000000000 offset 0:00:00.000000000
start time 99:99:99.999999999
 (ret: 0xffffffff)
0:00:10.119516827 ^[[336m 2195^[[00m      0x24e5c90 ^[[37mDEBUG  ^[[00m
^[[00m    decklinkvideosrc
gstdecklinkvideosrc.cpp:687:gst_decklink_video_src_start_stre
ams:<source>^[[00m Starting streams
0:00:10.119561990 ^[[336m 2195^[[00m      0x24e5c90 ^[[33;01mLOG    ^[[00m
^[[00m            decklink
gstdecklink.cpp:936:gst_decklink_clock_get_internal_time:<
GstDecklinkInputClock>^[[00m result 0:00:00.000000000 time 2:53:48.397127082
last time 0:00:00.000000000 offset 0:00:00.000000000 start time
2:53:48.397127082 (
ret: 0x00000000)
0:00:10.119580858 ^[[336m 2195^[[00m      0x24e5c90 ^[[33;01mLOG    ^[[00m
^[[00m            decklink
gstdecklink.cpp:936:gst_decklink_clock_get_internal_time:<
GstDecklinkInputClock>^[[00m result 0:00:00.000022422 time 2:53:48.397149504
last time 0:00:00.000000000 offset 0:00:00.000000000 start time
2:53:48.397127082 (
ret: 0x00000000)
GST_STATE_CHANGE_ASYNC
handeling state
0:00:10.119703435 ^[[336m 2195^[[00m 0x7fb12c020590 ^[[37mDEBUG  ^[[00m
^[[00m    decklinkvideosrc
gstdecklinkvideosrc.cpp:262:gst_decklink_video_src_set_caps:<
source>^[[00m Setting caps video/x-raw, format=(string)UYVY,
width=(int)1920, height=(int)1080, framerate=(fraction)30000/1001,
interlace-mode=(string)interleav
ed, pixel-aspect-ratio=(fraction)1/1, colorimetry=(string)bt709,
chroma-site=(string)mpeg2
0:00:10.120436367 ^[[336m 2195^[[00m 0x7fb12c020590 ^[[33;01mWARN   ^[[00m
^[[00m    decklinkvideosrc
gstdecklinkvideosrc.cpp:331:gst_decklink_video_src_set_cap
s:<source>^[[00m Failed to enable video input
GST_STATE_CHANGE_FAILURE




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