Nvarguscamerasrc does not allow to set exposuretimerange below 34000

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

Hi,
I want to set exposure time for my camera below 34000 which is not possible via nvarguscamerasrc.
It causes:
GST_ARGUS: NvArgusCameraSrc: Setting Exposure Time Range : 16000 40000
GST_ARGUS: Invalid Exposure Time Range Input

although the camera seems to provide it:
GST_ARGUS: 1920 x 1080 FR = 59,999999 fps Duration = 16666667 ; Analog Gain range min 1,000000, max 354,000000; Exposure Range min 5000, max 352112000;

Looking into the source code of gstnvarguscamerasrc.cpp it is obvious why:
#define MIN_EXPOSURE_TIME 34000
…
else if(prop_id == PROP_EXPOSURE_TIME_RANGE)
{
if (array[0] < MIN_EXPOSURE_TIME || array[1] > MAX_EXPOSURE_TIME) {
GST_ARGUS_PRINT(“Invalid Exposure Time Range Input\n”);
ret = FALSE;
goto done;
}
…

Could you please fix the MIN_EXPOSURE_TIME and adapt it to the value that the camera provides?

3

You can get the source code to build it by yourself. Download the source from below link. And apply the patch.

https://developer.nvidia.com/embedded/l4t/r32_release_v5.1/r32_release_v5.1/sources/t186/public_sources.tbz2

https://elinux.org/Jetson/L4T/r32.5.x_patches

4

Thanks. I fixed it already in my code but it would be good to be included in the next JetPack Release ;-)
Also the possible values for exposure_compensation should be adapted to much higher values than -2;2.

5

Thanks for your update.
Will check if can add it to the request for next release.