Zoom button for usbwebcam

manueloya · February 22, 2019, 8:10pm

when i want to change the octoprin webcam zoom , i login with ssh and change de zoom with this comand
v4l2-ctl -c zoom_absolute=1 , can be 1 to 5
i have included in the
/root/bin/webcamd
my default configuration

# runs MJPG Streamer, using the provided input plugin + configuration

function runMjpgStreamer {
input=$1
pushd $MJPGSTREAMER_HOME &gt; /dev/null 2&gt;&amp;1
echo Running ./mjpg_streamer -o "output_http.so -w $camera_http_webroot $camera_http_options" -i "$input"
LD_LIBRARY_PATH=. ./mjpg_streamer -o "output_http.so -w $camera_http_webroot $camera_http_options" -i "$input" &;
v4l2-ctl -c zoom_absolute=2 &;
wait
popd &gt; /dev/null 2&gt;&amp;1
}

is it posible include a buttom in the control window to change the zoom without ssh login?

thanks a lot

postedit:
You need to have installed Custom Control Editor plugin and the mentioned GCODE System Commands plugin

tedder42 · February 22, 2019, 9:50pm

Please format your config so it is readable.

THHL · February 22, 2019, 11:36pm

Hi manueloya,

haha, cool, didn't even know my cam could do this, but it works!

I have implemented 2 buttons to zoom to 1x and 2x with the plugin "GCODE System Commands" using this Howto: How to send remote commands to second Pi from OctoPrint
Since you have no need for remote login, you can ignore the first part of the Howto. Just define 2 Command Definitions in the plugin like 'sudo v4l2-ctl -c zoom_absolute=1' with 2 different numbers and edit the 'config.yaml' file accordingly:

controls:
- children:
  - command: OCTO911
    name: C525 Zoom 1x
  - command: OCTO912
    name: C525 Zoom 2x
  name: Custom Events
  type: section

If necessary, have a look at the sudo config to make it work.

manueloya · February 23, 2019, 7:54am

great
thanks a lot

with v412-ctl -l you can look all the comand options

THHL · February 23, 2019, 1:08pm

yep, found v4l2-ctl --all, but that's equivalent, I suppose

For my camera, a Logitech C525, only zoom to 1x and 2x works, if I try 3x ... 5x nothing happens. This seems to be depending on the features of the actual camera, right?

With my Raspi-Cam e.g. the line for zoom isn't even shown with v4l2-ctl --all, so obviously this camera cannot zoom at all.

manueloya · February 23, 2019, 2:55pm

i try to include in the confgi.yaml

controls:
- children:
  - command: OCTO911
    name: C525 Zoom 1x
  - command: OCTO912
    name: C525 Zoom 2x
  name: Custom Events
  type: section

and the octoprint doesnt restart , is de code ok?

OutsourcedGuru · February 23, 2019, 3:59pm

The keygen part of that tutorial though was necessary so that the pi user can do password-less sudo (even if remotely). In order for OctoPrint to be able to do password-less sudo for that v4l2-ctl command you'll need to create a file in the /etc/sudoers.d folder similar to the technique talked about here.

THHL · February 23, 2019, 4:59pm

I "copy&past"ed the code right out of my config.yaml file, so it should be ok.
I am working in a linux-only environment. Do you have Windows? How have you edited the config.yaml file? I don't know how robust the config.yaml file is regarding white space, blank lines and Windows line-end vs. Linux line-end handling...

manueloya · February 24, 2019, 12:36pm

v4l2-ctl doesnt need sudo exec, no necesary password-less sudo command

OutsourcedGuru · February 24, 2019, 11:42pm

I guess they need to be removed in the configuration as seen in the first post.

GoldEye · March 3, 2019, 3:38pm

I have a Logitech C525. When connected to a PC it can Zoom, Pan and Tilt a little bit.

I've been able to get mine to Zoom to three different levels and Pan to the Left and Right. I haven't been able to get the Tilt working though.

config.yaml contains:

controls:
- children:
  - command: OCTO911
    name: Zoom 1x
  - command: OCTO912
    name: Zoom 2x
  - command: OCTO913
    name: Zoom 3x
  - command: OCTO920
    name: Left
  - command: OCTO921
    name: Center
  - command: OCTO922
    name: Right
  name: Custom Events
  type: section`

Settings/ GCODE System Commands

On the "Control" tab the buttons appear aligned vertically.

Does anyone know how we can arrange the buttons horizontally instead of vertically?

OutsourcedGuru · March 3, 2019, 6:49pm

From Pimp my web interface ...add Themeify and then create the two custom ones marked "form.custom_control".

MagnusT · March 26, 2019, 12:06am

form.custom_control didn't work?

This seems to take precedence?

#control 
.custom_section_vertical>.custom_control {
display: block;
}

OutsourcedGuru · March 26, 2019, 12:08am

Not sure what to tell you since this technique works on mine, nicely making the custom buttons go horizontally across the page with a 10px padding between them.

MagnusT · March 26, 2019, 12:09am

I didn't add all items from your list, maybe it depends on some more of the lines?

EDIT: can't see which one that could possibly be...

OutsourcedGuru · March 26, 2019, 12:10am

It only requires the two as indicated and probably a page reload.

MagnusT · March 26, 2019, 12:11am

caching maybe... shift f5 doesn't help... let me see...

EDIT:
nope, stubborn one... it's horizontal at first but after a second or so it pops down to vertical.

MagnusT · March 26, 2019, 12:22am

MagnusT · March 26, 2019, 6:07am

I wonder where the "ko" "/ko" "if: layout == horizontal" stuff originates from in the code base...

OutsourcedGuru · March 26, 2019, 5:26pm

You mean here in control.jinja2? So in theory, something above this level has a key/arg pair of something like layout: horizontal. You would think that this would be the ViewModel for Control. Which takes us to here in the docs for custom controls.

Wow. I got it to work (without Themeify this time).

Be super careful about editing your config.yaml. If you put the attribute in the wrong place it simply won't come up.

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