Embedded device and custom Gstreamer source

Nicolas Dufresne nicolas at ndufresne.ca
Fri Feb 22 14:28:39 UTC 2019


Le ven. 22 févr. 2019 03 h 42, Duchassin Frederic <duchassin at sefram.fr> a
écrit :

> Hello,
>
>
>
> I try to make my own PCIE gstreamer source.
>
> My goal is to feed an mpeg2ts stream to gstreamer pipeline on my IMX8M
> som.(kernel 4.9.88)
>
> In order to do that, i've created my own source based on GstBaseSrc.
>
> On many stream i get no problem....but on others my pipeline doesn't want
> to work  and it seems that MPEG2 parser is the problem.
>
> This is the log of the failure :
>
root at cl-som-imx8:/home/sefram/debug# gst-launch-1.0 pciesrc
> do-timestamp=false blocksize=4096 ! queue ! tee ! typefind ! aiurdemux
>
> aiurdemux is the multicontainer demuxer by Freescale. I didn't know it was
ported to 1.0. It is known to have all sort of small glitches. I would
suggest to replace it by tsdemux. Same API to select the pid. This is the
upstream demuxer.

Note that normally this type of HW is implemented as a V4L2 capture driver,
and a source already exist, v4l2src.

> program-numberr=5901 name=d ! fakesink async=false
> 0:00:00.409990158 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:478:gst_aiurdemux_init:<GstAiurDemux at 0x8202e0>
> gst_aiurdemux_init
> Setting pipeline to PAUSED ...
> 0:00:00.413664153 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:519:gst_aiurdemux_change_state:<d> change_state transition=a
> 0:00:00.413973989 13052       0x7f72d0 DEBUG              aiurdemux
> aiurdemux.c:508:gst_aiurdemux_change_state:<d> change_state READY_TO_PAUSED
> 0:00:00.414040469 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:894:aiurdemux_sink_activate:<d:sink> activating push
> Pipeline is live and does not need PREROLL ...
> Setting pipeline to PLAYING ...
> 0:00:00.416130963 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:519:gst_aiurdemux_change_state:<d> change_state transition=1c
> New clock: GstSystemClock
> 0:00:00.417412908 13052       0x8124a0 LOG                aiurdemux
> aiurdemux.c:669:gst_aiurdemux_handle_sink_event:<d>
> gst_aiurdemux_handle_sink_event event=280e
> 0:00:00.434010267 13052       0x8124a0 DEBUG              aiurdemux
> aiurdemux.c:1082:gst_aiurdemux_setcaps:<d>
> gst_aiurdemux_setcaps=video/mpegts, systemstream=(boolean)true,
> packetsize=(int)188
>
> ====== AIUR: 4.3.5 build on Jan 21 2019 17:47:10. ======
>         Core: BLN_MAD-MMLAYER_MPG2PARSER_04.05.16  build on Sep 14 2017
> 02:37:53
>  file: /usr/lib/imx-mm/parser/lib_mpg2_parser_arm_elinux.so.3.1
> 0:00:00.434538141 13052       0x8124a0 INFO               aiurdemux
> aiurdemux.c:1094:gst_aiurdemux_setcaps:<d> Container: MPEG
> 0:00:00.434606900 13052       0x8124a0 DEBUG              aiurdemux
> aiurdemux.c:596:gst_aiurdemux_handle_sink_event:<d> handling new segment
> from0
> 0:00:00.571159247 13052       0x812280 LOG                aiurdemux
> aiurdemux.c:1197:aiurdemux_loop_state_init:<d> aiurdemux_loop_state_init
> SUCCESS
> 0:00:00.571239646 13052       0x812280 DEBUG              aiurdemux
> aiurdemux.c:1518:aiurdemux_set_readmode:<d> read mode = track mode
> 0:00:00.571300125 13052       0x812280 LOG                aiurdemux
> aiurdemux.c:1979:aiurdemux_parse_streams:<d> aiurdemux_parse_streams ret=0
> 0:00:00.571578522 13052       0x812280 LOG                aiurdemux
> aiurdemux.c:1308:aiurdemux_loop_state_header:<d>
> aiurdemux_loop_state_header SUCCESS
> 0:00:00.571616321 13052       0x812280 LOG                aiurdemux
> aiurdemux.c:1313:aiurdemux_loop_state_header:<d>
> aiurdemux_loop_state_header FAILED
> 0:00:00.571648601 13052       0x812280 LOG                aiurdemux
> aiurdemux.c:1061:aiurdemux_push_task:<d> pausing task, reason error
>
> 0:00:00.571694320 13052       0x812280 WARN               aiurdemux
> aiurdemux.c:1068:aiurdemux_push_task:<d> error: streaming stopped, reason
> error, state 2
> WARNING: from element /GstPipeline:pipeline0/GstAiurDemux:d: Delayed
> linking failed.
> Additional debug info:
> ../../../git/gst/parse/grammar.y(510): gst_parse_no_more_pads ():
> /GstPipeline:pipeline0/GstAiurDemux:d:
> failed delayed linking some pad of GstAiurDemux named d to some pad of
> GstFakeSink named fakesink0
> ERROR: from element /GstPipeline:pipeline0/GstAiurDemux:d: GStreamer
> encountered a general stream error.
> Additional debug info:
> ../../../git/plugins/aiurdemux/aiurdemux.c(1068): aiurdemux_push_task ():
> /GstPipeline:pipeline0/GstAiurDemux:d:
> streaming stopped, reason error, state 2
> Execution ended after 0:00:00.155683236
> Setting pipeline to PAUSED ...
> 0:00:00.572143715 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:519:gst_aiurdemux_change_state:<d> change_state transition=23
> Setting pipeline to READY ...
> 0:00:00.572622629 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:519:gst_aiurdemux_change_state:<d> change_state transition=1a
> 0:00:01.571911494 13052       0x7f72d0 DEBUG              aiurdemux
> aiurdemux.c:528:gst_aiurdemux_change_state:<d> change_state PAUSED_TO_READY
> Setting pipeline to NULL ...
> 0:00:01.573297478 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:519:gst_aiurdemux_change_state:<d> change_state transition=11
> Freeing pipeline ...
> 0:00:01.573816591 13052       0x7f72d0 LOG                aiurdemux
> aiurdemux.c:486:gst_aiurdemux_finalize:<d> gst_aiurdemux_finalize
>
>
>
> I've recorder this stream . On this stream only program 5902 is working.
> Others programs gives errors.
>
> I just add that reading this file with "filesrc" gives no error on every
> programs *(it just do many seek before decoding*):
>
>
>
> root at cl-som-imx8:/home/sefram/debug# gst-launch-1.0 filesrc
> location=/home/sefram/TS/essai.ts ! queue ! tee ! typefind ! aiurdemux
> program-number=5901 name=d ! fakesink
> 0:00:00.083554268 13082       0x66e460 LOG                aiurdemux
> aiurdemux.c:478:gst_aiurdemux_init:<GstAiurDemux at 0x670270>
> gst_aiurdemux_init
> Setting pipeline to PAUSED ...
> 0:00:00.086178037 13082       0x66e460 LOG                aiurdemux
> aiurdemux.c:519:gst_aiurdemux_change_state:<d> change_state transition=a
> 0:00:00.086412994 13082       0x66e460 DEBUG              aiurdemux
> aiurdemux.c:508:gst_aiurdemux_change_state:<d> change_state READY_TO_PAUSED
> 0:00:00.086458473 13082       0x66e460 LOG                aiurdemux
> aiurdemux.c:894:aiurdemux_sink_activate:<d:sink> activating push
> Pipeline is PREROLLING ...
> 0:00:00.093662346 13082       0x654cf0 LOG                aiurdemux
> aiurdemux.c:669:gst_aiurdemux_handle_sink_event:<d>
> gst_aiurdemux_handle_sink_event event=280e
> 0:00:00.108879842 13082       0x654cf0 DEBUG              aiurdemux
> aiurdemux.c:1082:gst_aiurdemux_setcaps:<d>
> gst_aiurdemux_setcaps=video/mpegts, systemstream=(boolean)true,
> packetsize=(int)188
>
> ====== AIUR: 4.3.5 build on Jan 21 2019 17:47:10. ======
>         Core: BLN_MAD-MMLAYER_MPG2PARSER_04.05.16  build on Sep 14 2017
> 02:37:53
>  file: /usr/lib/imx-mm/parser/lib_mpg2_parser_arm_elinux.so.3.1
> 0:00:00.109289877 13082       0x654cf0 INFO               aiurdemux
> aiurdemux.c:1094:gst_aiurdemux_setcaps:<d> Container: MPEG
> 0:00:00.109348556 13082       0x654cf0 DEBUG              aiurdemux
> aiurdemux.c:608:gst_aiurdemux_handle_sink_event:<d> Pushing newseg  rate 1,
> format 3, start 0:00:00.000000000, stop 99:99:99.999999999
> 0:00:00.109487395 13082       0x654a30 DEBUG              aiurdemux
> aiurcontent.c:576:aiurcontent_query_content_info: can not mkdir
> /home/root/.aiur
> 0:00:00.132204560 13082       0x654a30 DEBUG              aiurdemux
> aiurcontent.c:351:aiurcontent_callback_seek_push: seek to 0
> 0:00:00.132278479 13082       0x654a30 DEBUG              aiurdemux
> aiurstreamcache.c:340:gst_aiur_stream_cache_seek: Flush cache, backward
> seek addr 0, cachestart 2814646, offset 200010
> 0:00:00.132311118 13082       0x654a30 INFO               aiurdemux
> aiurstreamcache.c:365:gst_aiur_stream_cache_seek: stream cache try seek to 0
> 0:00:01.133119765 13082       0x654cf0 DEBUG              aiurdemux
> aiurdemux.c:608:gst_aiurdemux_handle_sink_event:<d> Pushing newseg  rate 1,
> format 3, start 0:00:00.000000000, stop 99:99:99.999999999
> 0:00:01.179763321 13082       0x654a30 DEBUG              aiurdemux
> aiurcontent.c:351:aiurcontent_callback_seek_push: seek to 0
> 0:00:01.179851879 13082       0x654a30 DEBUG              aiurdemux
> aiurstreamcache.c:340:gst_aiur_stream_cache_seek: Flush cache, backward
> seek addr 0, cachestart 3666614, offset 200010
> 0:00:01.179895199 13082       0x654a30 INFO               aiurdemux
> aiurstreamcache.c:365:gst_aiur_stream_cache_seek: stream cache try seek to 0
> 0:00:02.180303771 13082       0x654cf0 DEBUG              aiurdemux
> aiurdemux.c:608:gst_aiurdemux_handle_sink_event:<d> Pushing newseg  rate 1,
> format 3, start 0:00:00.000000000, stop 99:99:99.999999999
> 0:00:02.182863220 13082       0x654a30 DEBUG              aiurdemux
> aiurcontent.c:351:aiurcontent_callback_seek_push: seek to 130314240
> 0:00:02.182958379 13082       0x654a30 INFO               aiurdemux
> aiurstreamcache.c:365:gst_aiur_stream_cache_seek: stream cache try seek to
> 130314240
> 0:00:02.183825128 13082       0x654cf0 DEBUG              aiurdemux
> aiurdemux.c:608:gst_aiurdemux_handle_sink_event:<d> Pushing newseg  rate 1,
> format 3, start 0:00:00.130314240, stop 99:99:99.999999999
> 0:00:02.185594987 13082       0x654a30 DEBUG              aiurdemux
> aiurcontent.c:351:aiurcontent_callback_seek_push: seek to 130052096
> 0:00:02.185642026 13082       0x654a30 DEBUG              aiurdemux
> aiurstreamcache.c:340:gst_aiur_stream_cache_seek: Flush cache, backward
> seek addr 130052096, cachestart 130314240, offset 131072
> 0:00:02.185683666 13082       0x654a30 INFO               aiurdemux
> aiurstreamcache.c:365:gst_aiur_stream_cache_seek: stream cache try seek to
> 130052096
> 0:00:02.186139900 13082       0x654cf0 DEBUG              aiurdemux
> aiurdemux.c:608:gst_aiurdemux_handle_sink_event:<d> Pushing newseg  rate 1,
> format 3, start 0:00:00.130052096, stop 99:99:99.999999999
> 0:00:02.192078748 13082       0x654a30 DEBUG              aiurdemux
> aiurcontent.c:351:aiurcontent_callback_seek_push: seek to 0
> 0:00:02.192145227 13082       0x654a30 DEBUG              aiurdemux
> aiurstreamcache.c:340:gst_aiur_stream_cache_seek: Flush cache, backward
> seek addr 0, cachestart
>
>
>
> I hope somebody could help me because i don't really understand the
> problem. My custom plugin should be bad...I can send my source code if
> someone can look at it.
>
>
>
> BR
>
>
>
> Frédéric
> _______________________________________________
> gstreamer-devel mailing list
> gstreamer-devel at lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/gstreamer-devel/attachments/20190222/31cc72bc/attachment-0001.html>


More information about the gstreamer-devel mailing list