Linux: AM5728 GStreamer issue with web camera

Hello,

What is the PSDK version that you are using here?

BR
Margarita

Hello,

user4933918 said:

root@liqi-Lenovo-V480:~# gst-launch-1.0 --gst-debug=2 v4l2src device=/dev/video1 num-buffers=1000 io-mode=4 ! 'video/x-raw, \
> format=(string)YV12, width=(int)960, height=(int)720' ! vpe num-input-buffers=8 ! queue ! waylandsink

This pipeline will not work since vpe does not support yv12 as input format.

You could try to replace it with videoconvert element.

user4933918 said:

root@liqi-Lenovo-V480:~# gst-launch-1.0 --gst-debug=2 v4l2src device=/dev/video1 num-buffers=1000 io-mode=4 ! 'video/x-raw, \
> format=(string)YUY2, width=(int)960, height=(int)720' ! vpe num-input-buffers=8 ! queue ! waylandsink

I see this pipeline is moving to PLAYING state but there is error QBUF failed: Bad address, index = 31.

Please, try to increase cma in bootargs.

You could check this thread how you could do this https://e2e.ti.com/support/arm/sitara_arm/f/791/t/668287

Please let me know the PSDK version that you are using and are you using a usb cam.

Thank you!

Best Regards,

Margarita

Hi,
the version of PSDK is 04_03_00_05.

Li Qi

Actually, I am using a usb camera.
I increase the cma in uEnv.txt as the following uEnv.txt implies.

# This uEnv.txt file can contain additional environment settings that you
# want to set in U-Boot at boot time. This can be simple variables such
# as the serverip or custom variables. The format of this file is:
# variable=value
# NOTE: This file will be evaluated after the bootcmd is run and the
# bootcmd must be set to load this file if it exists (this is the
# default on all newer U-Boot images. This also means that some
# variables such as bootdelay cannot be changed by this file since
# it is not evaluated until the bootcmd is run.

# The environment is saved to eMMC, but we wish that a newly created SD card
# will boot without any manual configuration. To do this we will reset the
# environment upon the first boot, and then create a file in the boot partition
# of the SD card to mark when the first-time setup has been done.

psdk_setup_file=.psdk_setup
check_psdk_setup=load mmc 0:1 ${loadaddr} ${psdk_setup_file}
cma=64MiB
uenvcmd=run cma;

# Unfortunately, the following will be erased before it can be invoked
# (See below in "uenvcmd")
#mark_psdk_setup=mw .b ${loadaddr} 0 1; fatwrite mmc 0:1 ${loadaddr} ${psdk_setup_file} 1

# Reset to the default environment
do_psdk_setup=env default -f -a; saveenv

# If not previously configured, then configure the environment and indicate this by writing a file
uenvcmd=run cma; if run check_psdk_setup; then echo "Already setup."; else run do_psdk_setup; mw.b ${loadaddr} 0 1; fatwrite mmc 0:1 ${loadaddr} .psdk_setup 1; reset; fi



However, it doesn't not help in capturing video and the error information is the same as before.

root@liqi-Lenovo-V480:~# gst-launch-1.0 --gst-debug=2 v4l2src device=/dev/video1 num-buffers=1000 io-mode=4 ! 'video/x-raw, \
> format=(string)YUY2, width=(int)960, height=(int)720' ! vpe num-input-buffers=8 ! queue ! waylandsink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
0:00:00.964266851 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:00.964361686 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:00.964677747 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:00.964730776 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:00.964967456 1112 0x1d7200 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:00.965032848 1112 0x1d7200 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.714438830 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.714524393 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.714787100 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.714820284 1112 0x1f0c60 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.715052409 1112 0x1d7200 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.715084780 1112 0x1d7200 WARN waylandsink wlvideoformat.c:102:gst_wl_shm_format_to_video_format: gst video format not found
0:00:01.715277377 1112 0x1f0c60 WARN vpe gstvpebufferpool.c:466:gst_vpe_buffer_pool_import: Allocating a new input buffer index: 0/128, 0
0:00:01.731325420 1112 0x1f0c60 ERROR vpe gstvpebufferpool.c:380:gst_vpe_buffer_pool_queue: vpebufferpool: QBUF failed: Bad address, index = 31
0:00:01.731465638 1112 0x1f0c60 WARN basesrc gstbasesrc.c:2948:gst_base_src_loop:<v4l2src0> error: Internal data flow error.
0:00:01.731507281 1112 0x1f0c60 WARN basesrc gstbasesrc.c:2948:gst_base_src_loop:<v4l2src0> error: streaming task paused, reason error (-5)
0:00:01.731628142 1112 0x1ca980 WARN bufferpool gstbufferpool.c:300:do_alloc_buffer:<vpebufferpool1> alloc function failed
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data flow error.
Additional debug info:
../../../../gstreamer-1.8.3/libs/gst/base/gstbasesrc.c(2948): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
streaming task paused, reason error (-5)
Execution ended after 0:00:01.003957843
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...

Hello, Margarita.
Thanks for your reply. Unfortunately, I have some other urgent things to do recently and have no time to validate your suggestion.
I will come back and give the result as soon as I try your suggestion.

Thanks.
Li Qi