[gst-devel] Pipeline fail to change to playing when use two pads.

[praveen pandey]

connect 2 'queue' elements after camera element.

BR,
Praveen Pandey

On Thu, Jan 13, 2011 at 9:39 PM, Hu, Gang A <gang.a.hu at intel.com> wrote:

>  Hi,
>  I am developing a three pads camera source element. I created this element
> based on GstBaseSrc, and add another two pads to GstBaseSrc and created a
> new basesrc in my camera source.
> My currently design is the vfsrc pad always has data flow. Another copy of
> data flow will be image or video depends on the mode setting to the camera
> source.
>
> This pipeline is working now.
> gst-launch -ev mfldv4l2camsrc num-buffers=2 .vfsrc !
> video/x-raw-yuv,width=640,height=480 ! sdlvideosink
>
> But if I want use the imgpad,
> gst-launch -ev mfldv4l2camsrc num-buffers=2 name=aa .imgsrc !
> video/x-raw-yuv,width=640,height=480 ! fakesink aa.vfsrc !
> video/x-raw-yuv,width=640,height=480 ! sdlvideosink
>
>  the pipeline will stop at waiting for playing.
> gst_base_sink_wait_preroll:<sdlvideosink0> waiting in preroll for flush or
> PLAYING
> cat
> What is the potential issue?
>
> This is my source code repository:
> *
> http://meego.gitorious.org/maemo-multimedia/mfldv4l2camsrc/commits/camerabin2
> *<http://meego.gitorious.org/maemo-multimedia/mfldv4l2camsrc/commits/camerabin2>
> This is the some of the log of the basesrc anb basesink.
>
> gst_cam_base_src_init: creating vfsrc pad
> gst_cam_base_src_init: creating imgsrc pad
> gst_cam_base_src_init: creating vidsrc pad
> gst_cam_base_src_init: setting functions on src pad
> gst_cam_base_src_init: adding three src pads
> gst_cam_base_src_init: init done
> gst_cam_base_src_set_property:<mfldv4l2camsrc0> Setting pad mode: 1
> gst_cam_base_src_set_pad_mode:<mfldv4l2camsrc0> Set pad mode to 1
> gst_base_sink_change_state:<sdlvideosink0> READY to PAUSED
> gst_base_sink_change_state:<sdlvideosink0> doing async state change
> gst_base_sink_pad_activate:<sdlvideosink0> Trying pull mode first
> gst_base_sink_pad_activate:<sdlvideosink0> pull mode disabled
> gst_base_sink_pad_activate:<sdlvideosink0> Falling back to push mode
> gst_base_sink_pad_activate:<sdlvideosink0> Success activating push mode
> gst_base_sink_change_state:<filesink0> READY to PAUSED
> gst_base_sink_change_state:<filesink0> doing async state change
> gst_base_sink_pad_activate:<filesink0> Trying pull mode first
> gst_base_sink_pad_activate:<filesink0> pull mode disabled
> gst_base_sink_pad_activate:<filesink0> Falling back to push mode
> gst_base_sink_pad_activate:<filesink0> Success activating push mode
> gst_cam_base_src_activate_push:<mfldv4l2camsrc0> vidsrc activating in push
> mode
> gst_cam_base_src_start:<mfldv4l2camsrc0> starting source of pad vidsrc
> gst_cam_base_src_start:<mfldv4l2camsrc0> format: time, have size: 1, size:
> 18446744073709551615, duration: -1
> gst_cam_base_src_start:<mfldv4l2camsrc0> is seekable: 0
> gst_cam_base_src_start:<mfldv4l2camsrc0> is random_access: 0
> gst_cam_base_src_negotiate:<mfldv4l2camsrc0> negotiate of pad vidsrc
> gst_cam_base_src_activate_push:<mfldv4l2camsrc0> imgsrc activating in push
> mode
> gst_cam_base_src_start:<mfldv4l2camsrc0> starting source of pad imgsrc
> gst_cam_base_src_start:<mfldv4l2camsrc0> format: time, have size: 1, size:
> 18446744073709551615, duration: -1
> gst_cam_base_src_start:<mfldv4l2camsrc0> is seekable: 0
> gst_cam_base_src_start:<mfldv4l2camsrc0> is random_access: 0
> gst_cam_base_src_negotiate:<mfldv4l2camsrc0> negotiate of pad imgsrc
> gst_cam_base_src_activate_push:<mfldv4l2camsrc0> vfsrc activating in push
> mode
> gst_cam_base_src_start:<mfldv4l2camsrc0> starting source of pad vfsrc
> gst_cam_base_src_start:<mfldv4l2camsrc0> format: time, have size: 1, size:
> 18446744073709551615, duration: -1
> gst_cam_base_src_start:<mfldv4l2camsrc0> is seekable: 0
> gst_cam_base_src_start:<mfldv4l2camsrc0> is random_access: 0
> gst_cam_base_src_negotiate:<mfldv4l2camsrc0> negotiate of pad vfsrc
>
> gst_cam_base_src_perform_seek:<mfldv4l2camsrc0> doing seek: (NULL)
> gst_cam_base_src_perform_seek:<mfldv4l2camsrc0> seek with seqnum 19
> gst_cam_base_src_perform_seek:<mfldv4l2camsrc0> segment configured from 0
> to -1, position 0
> gst_cam_base_src_perform_seek:<mfldv4l2camsrc0> Sending newsegment from 0
> to -1
> gst_cam_base_src_loop:<mfldv4l2camsrc0> next_ts 99:99:99.999999999 size
> 4096
> gst_cam_base_src_wait_playing:<mfldv4l2camsrc0> live source waiting for
> running state
> gst_base_sink_query_latency:<sdlvideosink0> we are not yet ready for
> LATENCY query
> gst_base_sink_query_latency:<sdlvideosink0> latency query failed and we are
> live
> gst_base_sink_query:<sdlvideosink0> query latency returns 0
> gst_base_sink_query_latency:<filesink0> we are not yet ready for LATENCY
> query
> gst_base_sink_query_latency:<filesink0> latency query failed but we are not
> live
> gst_base_sink_query_latency:<filesink0> latency query: live: 0,
> have_latency 0, upstream: 0, min 0:00:00.000000000, max 99:99:99.999999999
> gst_base_sink_query:<filesink0> query latency returns 1
> gst_cam_base_src_change_state:<mfldv4l2camsrc0> PAUSED->PLAYING
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> unschedule clock
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> live running 1
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> unlock stop
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> signal
> gst_cam_base_src_wait_playing:<mfldv4l2camsrc0> live source unlocked
> gst_cam_base_src_get_range:<mfldv4l2camsrc0> calling create offset
> 18446744073709551615 length 4096, time 0
> gst_cam_base_src_do_sync:<mfldv4l2camsrc0> no latency needed, live 1, sync
> 0
> gst_cam_base_src_do_sync:<mfldv4l2camsrc0> startup timestamp:
> 0:00:00.299494749, running_time 0:00:00.332892825
> gst_cam_base_src_do_sync:<mfldv4l2camsrc0> no timestamp offset needed
> gst_cam_base_src_do_sync:<mfldv4l2camsrc0> no sync needed
> gst_cam_base_src_get_range:<mfldv4l2camsrc0> buffer ok
> gst_base_sink_event:<sdlvideosink0> received event 0x8f49f68 newsegment
> event from 'vfsrc' at time 99:99:99.999999999: GstEventNewsegment,
> update=(boolean)false, rate=(double)1, applied-rate=(double)1,
> format=(GstFormat)GST_FORMAT_TIME, start=(gint64)0, stop=(gint64)-1,
> position=(gint64)0;
> gst_base_sink_event:<sdlvideosink0> newsegment 0x8f49f68
> gst_base_sink_configure_segment:<sdlvideosink0> configured NEWSEGMENT
> update 0, rate 1.000000, applied rate 1.000000, format GST_FORMAT_TIME,
> 0:00:00.000000000 -- 99:99:99.999999999, time 0:00:00.000000000, accum
> 0:00:00.000000000
> gst_base_sink_queue_object_unlocked:<sdlvideosink0> now 0 prerolled items
> gst_base_sink_queue_object_unlocked:<sdlvideosink0> need more preroll data
> 0 <= 0
> gst_base_sink_chain_unlocked:<sdlvideosink0> got times start:
> 0:00:00.299494749, end: 0:00:00.332828082
> gst_base_sink_queue_object_unlocked:<sdlvideosink0> now 1 prerolled items
> gst_base_sink_preroll_object:<sdlvideosink0> prerolling object 0x8ddf300
> gst_base_sink_preroll_object:<sdlvideosink0> preroll buffer
> 0:00:00.299494749
> st_base_sink_set_last_buffer_unlocked:<sdlvideosink0> setting last buffer
> to 0x8ddf300
> gst_base_sink_commit_state:<sdlvideosink0> commiting state to PAUSED
> gst_base_sink_commit_state:<sdlvideosink0> posting PAUSED state change
> message
> gst_base_sink_commit_state:<sdlvideosink0> posting async-done message
> gst_base_sink_queue_object_unlocked:<sdlvideosink0> rendering queued object
> 0x8f49f68
> gst_base_sink_do_sync:<sdlvideosink0> non syncable object 0x8f49f68
> gst_base_sink_render_object:<sdlvideosink0> rendering event 0x8f49f68, type
> newsegment
> gst_base_sink_render_object:<sdlvideosink0> Got seqnum #19
> gst_base_sink_configure_segment:<sdlvideosink0> configured NEWSEGMENT
> update 0, rate 1.000000, applied rate 1.000000, format GST_FORMAT_TIME,
> 0:00:00.000000000 -- 99:99:99.999999999, time 0:00:00.000000000, accum
> 0:00:00.000000000
> gst_base_sink_render_object:<sdlvideosink0> object unref after render
> 0x8f49f68
> gst_base_sink_get_sync_times:<sdlvideosink0> got times start:
> 0:00:00.299494749, stop: 0:00:00.332828082, do_sync 1
> gst_base_sink_do_preroll:<sdlvideosink0> prerolling object 0x8ddf300
> gst_base_sink_preroll_object:<sdlvideosink0> prerolling object 0x8ddf300
> gst_base_sink_wait_preroll:<sdlvideosink0> waiting in preroll for flush or
> PLAYING
> 3:gst_cam_base_src_event_handler:<mfldv4l2camsrc0> Hanlde event of pad
> vfsrc
> 1:gst_cam_base_src_default_event:<mfldv4l2camsrc0> handle event navigation
> event from 'src' at time 99:99:99.999999999: application/x-gst-navigation,
> event=(string)mouse-move, button=(int)0, pointer_x=(double)639,
> pointer_y=(double)179;
> gst_cam_base_src_event_handler:<mfldv4l2camsrc0> Hanlde event of pad vfsrc
>
> gst_cam_base_src_change_state:<mfldv4l2camsrc0> PLAYING->PAUSED
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> unlock
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> unschedule clock
> gst_cam_base_src_set_playing:<mfldv4l2camsrc0> live running 0
> gst_base_sink_set_flushing:<sdlvideosink0> flushing out data thread, need
> preroll to TRUE
> gst_base_sink_preroll_queue_flush:<sdlvideosink0> flushing queue 0x8e8c0a0
> *gst_base_sink_wait_preroll:<sdlvideosink0> preroll interrupted because of
> flush*
> *gst_base_sink_do_preroll:<sdlvideosink0> preroll failed -2*
> *gst_base_sink_do_sync:<sdlvideosink0> preroll failed*
> gst_base_sink_render_object:<sdlvideosink0> do_sync returned wrong-state
> gst_base_sink_render_object:<sdlvideosink0> object unref after render
> 0x8ddf300
> gst_cam_base_src_loop:<mfldv4l2camsrc0> pausing after gst_pad_push() to
> vfpad = wrong-state
> gst_cam_base_src_loop:<mfldv4l2camsrc0> pausing task, reason wrong-state
> st_base_sink_set_last_buffer_unlocked:<sdlvideosink0> setting last buffer
> to (nil)
> gst_base_sink_change_state:<sdlvideosink0> PAUSED to READY, don't
> need_preroll
> gst_base_sink_set_flushing:<filesink0> flushing out data thread, need
> preroll to TRUE
> gst_base_sink_preroll_queue_flush:<filesink0> flushing queue 0x8e86288
> gst_base_sink_change_state:<filesink0> PAUSED to READY, posting async-done
> gst_cam_base_src_activate_push:<mfldv4l2camsrc0> Deactivating in push mode
> gst_cam_base_src_activate_push:<mfldv4l2camsrc0> Deactivating in push mode
> gst_cam_base_src_activate_push:<mfldv4l2camsrc0> Deactivating in push mode
> gst_cam_base_src_stop:<mfldv4l2camsrc0> stopping source
> gst_cam_base_src_change_state:<mfldv4l2camsrc0> Sending EOS event
>
> Thanks.
>
>
>
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