Inogeni 4K -> USB3.0 and Jetson TX2

[Nicolas Dufresne]

Le 2 févr. 2018 1:56 AM, "Matteo Valdina" <matteo.valdina at gmail.com> a
écrit :

Hi,
Are you sure that the patch is the right one? It is for GREY not NV12 or
I420.


Oops.

https://patchwork.kernel.org/patch/7979761/


Anyway, I faced a similar issue. I used a rawvideoparse to force the stride
to the right value.

So your command should be something like:

gst-launch-1.0 v4l2src device=/dev/video0 !
video/x-raw,width=3840,height=2160,format=I420
! rawvideoparse format=2 width=3840 height=2160 ! fakesink


Yes, you figured right. The UVC driver calculates the stride wrong. Be
aware that UVC is not zero copy. With Inogeni the memcpy can be visible as
4k 30fps is quite high bandwidth.




Best
Matteo Valdina

On Thu, Feb 1, 2018 at 5:25 PM, Nicolas Dufresne <nicolas at ndufresne.ca>
wrote:

>
>
> Le 1 févr. 2018 11:11, "pavelm" <pavel.mikhadzionak at gmail.com> a écrit :
>
> I tried to capture 4k video from Inogeni via gstreamer and it's not
> working:
>
>     gst-launch-1.0 v4l2src device=/dev/video0 !
> "video/x-raw,width=3840,height=2160,format=I420" ! fakesink
>
>
> Do you have the UVC kernel fix for the stride in NV12 and I420 ?
>
> https://patchwork.linuxtv.org/patch/45357/
>
>
> With GST_DEBUG="*:3" I see errors:
>
>     ubuntu at tegra-ubuntu:~$ gst-launch-1.0 v4l2src device=/dev/video0 !
> "video/x-raw,width=3840,height=2160,format=I420" ! fakesink
>     Setting pipeline to PAUSED ...
>     Pipeline is live and does not need PREROLL ...
>     Setting pipeline to PLAYING ...
>     New clock: GstSystemClock
>     0:00:00.276135808 18119       0x60f320 WARN          v4l2bufferpool
> gstv4l2bufferpool.c:1196:gst_v4l2_buffer_pool_dqbuf:<v4l2src0:pool:src>
> Driver should never set v4l2_buffer.field to ANY
>     0:00:00.276210433 18119       0x60f320 WARN          v4l2bufferpool
> gstv4l2bufferpool.c:1958:gst_v4l2_buffer_pool_process:<v4l2src0:pool:src>
> Dropping corrupted buffer without payload
>     0:00:00.276253730 18119       0x60f320 WARN          v4l2bufferpool
> gstv4l2bufferpool.c:1958:gst_v4l2_buffer_pool_process:<v4l2src0:pool:src>
> Dropping corrupted buffer without payload
>     0:00:00.328871196 18119       0x60f320 ERROR                default
> video-frame.c:161:gst_video_frame_map_id: failed to map video frame plane
> 1
>     0:00:00.328947998 18119       0x60f320 ERROR         v4l2bufferpool
> gstv4l2bufferpool.c:161:gst_v4l2_buffer_pool_copy_buffer:<v4
> l2src0:pool:src>
> could not map buffer
>     0:00:00.328976798 18119       0x60f320 ERROR         v4l2bufferpool
> gstv4l2bufferpool.c:1953:gst_v4l2_buffer_pool_process:<v4l2src0:pool:src>
> failed to copy buffer
>     0:00:00.329004031 18119       0x60f320 WARN                 basesrc
> gstbasesrc.c:2939:gst_base_src_loop:<v4l2src0> error: Internal data stream
> error.
>     0:00:00.329015263 18119       0x60f320 WARN                 basesrc
> gstbasesrc.c:2939:gst_base_src_loop:<v4l2src0> error: streaming stopped,
> reason error (-5)
>     ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
> Internal
> data stream error.
>     Additional debug info:
>     gstbasesrc.c(2939): gst_base_src_loop ():
> /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
>     streaming stopped, reason error (-5)
>     Execution ended after 0:00:00.186888513
>     Setting pipeline to PAUSED ...
>     Setting pipeline to READY ...
>     Setting pipeline to NULL ...
>     Freeing pipeline ...
>
>
>
>
>
> --
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