Tool/software: Linux
Dear E2E Community,
I am using latest processor SDK and three Logitec c270 cameras
I am using USB/UVC patch from earlier thread : https://e2e.ti.com/support/arm/sitara_arm/f/791/p/555118/2029600#2029600
The devices list is shown below:
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root@am57xx-evm:~/sid# v4l2-ctl --list-devices
wbcap (platform:omapwb-cap):
/dev/video11
omapwb-m2m (platform:omapwb-m2m):
/dev/video10
vpe (platform:vpe):
/dev/video0
UVC Camera (046d:0825) (usb-xhci-hcd.1.auto-1.1):
/dev/video1
UVC Camera (046d:0825) (usb-xhci-hcd.1.auto-1.2):
/dev/video3
UVC Camera (046d:0825) (usb-xhci-hcd.1.auto-1.3):
/dev/video2
I am able to run following commands for two cameras. But when I run for the third camera (while 2 usb cameras are in use already), I am getting error.
I am using shared memory as sink
step 1:
gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,width=640,height=480,framerate=10/1! shmsink socket-path=/tmp/foo2 sync=true wait-for-connection=false shm-size=10000000
step 2:
gst-launch-1.0 v4l2src device=/dev/video2 ! video/x-raw,width=640,height=480,framerate=10/1! shmsink socket-path=/tmp/foo3 sync=true wait-for-connection=false shm-size=10000000
step 3:
gst-launch-1.0 v4l2src device=/dev/video3 ! video/x-raw,width=640,height=480,framerate=10/1! shmsink socket-path=/tmp/foo4 sync=true wait-for-connection=false shm-size=10000000
Procedure:
Three terminals are opened. In first terminal step 1 is run. In second terminal step 2 is run.
No issue as of now. But when i run step 3 I get the following error:
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Could not read from resource.
Additional debug info:
../../../gst-plugins-good-1.6.3/sys/v4l2/gstv4l2bufferpool.c(1055): gst_v4l2_buffer_pool_poll (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0:
poll error 1: No space left on device (28)
Execution ended after 0:00:01.541320120
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
Please suggest me on how to access 3 USB cameras. In-fact I want all the three cameras to work at resolution 1280 x 720
Thanks,
Siddartha
