gst-plugins-bad: avtp: error on gst_avtp_src_start:<avtpsrc0> Failed to open socket: Operation not permitted

[John Rama]

Hello Desounza,

Thanks again for your help on this.

> 
>> But Followings does not return no data...
>> $gst-launch-1.0 avtpsrc ifname=enp8s0 '!' avtpcvfdepay '!' fakesink dump=true
>> Setting pipeline to PAUSED ...
>> Pipeline is live and does not need PREROLL ...
>> Pipeline is PREROLLED ...
>> Setting pipeline to PLAYING ...
>> New clock: GstSystemClock
>> 
>> Can you think of any reason why ?
> 
> AVTP streams have a streamid - have you tried using:
> 
> ... ! avtpcvfdepay streamid=<stream-id> ! ...
> 
> Also note that you can get debug information from the avtp plugin with:
> 
> GST_DEBUG=avtp*:<debug-level> gst-launch-1.0
> 
> So you can check what the plugin is doing.

gst-launch-1.0 --gst-debug-color-mode=off clockselect. '(clock-id=realtime' avtpsrc ifname=enp8s0 address=91:EF:00:00:FE:00 '!' avtpcvfdepay streamid=0x0123456789abcdef '!' fakesink dump=true ')'

I put streamid and destination mac address, but I still have no success ( I can not see fakesink receives the data)...
According to the log (I attached whole log), avtpcvfdepay surely receive CVF stream, but does not pass them to the fakesink... 
Any idea ??

=====================================================

+ GST_DEBUG='avtp*:7'
+ gst-launch-1.0 --gst-debug-color-mode=off clockselect. '(clock-id=realtime' avtpsrc ifname=enp8s0 address=91:EF:00:00:FE:00 '!' avtpcvfdepay streamid=0x0123456789abcdef '!' fakesink dump=true ')'
0:00:00.021076523  3505 0x5566083a1c00 DEBUG                avtpsrc gstavtpsrc.c:156:gst_avtp_src_set_property:<avtpsrc0> prop_id 1
0:00:00.021102046  3505 0x5566083a1c00 DEBUG                avtpsrc gstavtpsrc.c:156:gst_avtp_src_set_property:<avtpsrc0> prop_id 2
0:00:00.021151987  3505 0x5566083a1c00 DEBUG      avtpbasedepayload gstavtpbasedepayload.c:142:gst_avtp_base_depayload_set_property:<avtpcvfdepay0> prop_id 1
Setting pipeline to PAUSED ...
0:00:00.043151942  3505 0x5566083a1c00 DEBUG                avtpsrc gstavtpsrc.c:248:gst_avtp_src_start:<avtpsrc0> AVTP source started
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
0:00:00.043562029  3505 0x5566083a1850 DEBUG      avtpbasedepayload gstavtpbasedepayload.c:178:gst_avtp_base_depayload_sink_event:<avtpcvfdepay0> event stream-start
New clock: DebugGstSystemClock
0:00:00.043681756  3505 0x5566083a1850 DEBUG      avtpbasedepayload gstavtpbasedepayload.c:178:gst_avtp_base_depayload_sink_event:<avtpcvfdepay0> event caps
0:00:00.069131412  3505 0x5566083a1850 DEBUG      avtpbasedepayload gstavtpbasedepayload.c:178:gst_avtp_base_depayload_sink_event:<avtpcvfdepay0> event segment
0:00:00.069168990  3505 0x5566083a1850 INFO            avtpcvfdepay gstavtpcvfdepay.c:379:gst_avtp_cvf_depay_validate_avtpdu:<avtpcvfdepay0> Unexpected AVTP header seq num 166, expected 0
0:00:00.069178877  3505 0x5566083a1850 DEBUG           avtpcvfdepay gstavtpcvfdepay.c:582:gst_avtp_cvf_depay_handle_fu_a:<avtpcvfdepay0> Fragment indicator - NRI: 2
0:00:00.069188523  3505 0x5566083a1850 DEBUG           avtpcvfdepay gstavtpcvfdepay.c:590:gst_avtp_cvf_depay_handle_fu_a:<avtpcvfdepay0> Fragment header - type: 1 start: 1 end: 0
0:00:00.069293505  3505 0x5566083a1850 DEBUG           avtpcvfdepay gstavtpcvfdepay.c:582:gst_avtp_cvf_depay_handle_fu_a:<avtpcvfdepay0> Fragment indicator - NRI: 2
0:00:00.069307743  3505 0x5566083a1850 DEBUG           avtpcvfdepay gstavtpcvfdepay.c:590:gst_avtp_cvf_depay_handle_fu_a:<avtpcvfdepay0> Fragment header - type: 1 start: 0 end: 0
...
0:00:00.084477094  3505 0x5566083a1850 DEBUG           avtpcvfdepay gstavtpcvfdepay.c:582:gst_avtp_cvf_depay_handle_fu_a:<avtpcvfdepay0> Fragment indicator - NRI: 2
0:00:00.084485950  3505 0x5566083a1850 DEBUG           avtpcvfdepay gstavtpcvfdepay.c:590:gst_avtp_cvf_depay_handle_fu_a:<avtpcvfdepay0> Fragment header - type: 1 start: 0 end: 1
0:00:00.084499930  3505 0x5566083a1850 LOG             avtpcvfdepay gstavtpcvfdepay.c:452:gst_avtp_cvf_depay_internal_push:<avtpcvfdepay0> Adding buffer of size 45829 (nalu size 45825) to out_buffer
...
=====================================================

P.S
You might wonder what's this in the log.... 
>0:00:00.069168990 3505 0x5566083a1850 INFO avtpcvfdepay gstavtpcvfdepay.c:379:gst_avtp_cvf_depay_validate_avtpdu:<avtpcvfdepay0> Unexpected AVTP header seq num 166, expected 0
This is because there is another AVTP message(AVDECC ADC) in the network.
I do not think this is the problem.
But please let me know if this is the problem..

Thanks !!

John

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