| import sys | |
| import struct | |
| import binascii | |
| from collections import Counter | |
| def u16(b): | |
| return struct.unpack('<H', b)[0] | |
| def p16(x): | |
| return struct.pack('<H', x) | |
| def p32(x): |
I have three printers; each uses a raspberry pi that runs OctoPrint. I wanted to be able to give people a single page to see all of the webcams, what they are printing with ETL (est time left), and what the current temperatures are.
This demonstrates how I did that. Email me at richard@hamstudy.org if you'd like to see a live demo -- I don't want every bot on the web looking at my cameras and using CPU cycles.
| #!/bin/sh | |
| INFO=$(xwininfo -frame) | |
| WIN_GEO=$(echo $INFO | grep -oEe 'geometry [0-9]+x[0-9]+' |\ | |
| grep -oEe '[0-9]+x[0-9]+') | |
| WIN_XY=$(echo $INFO | grep -oEe 'Corners:\s+\+[0-9]+\+[0-9]+' |\ | |
| grep -oEe '[0-9]+\+[0-9]+' | sed -e 's/+/,/' ) | |
| ffmpeg -f x11grab -y -r 15 -s $WIN_GEO -i :0.0+$WIN_XY -vcodec ffv1 -sameq -f alsa -ac 2\ |
As pointed out by @johntyree in the comments, using git reflog is easier and more reliable. Thanks for the suggestion!
$ git reflog
1ed7510 HEAD@{1}: checkout: moving from develop to 1ed7510
3970d09 HEAD@{2}: checkout: moving from b-fix-build to develop
1ed7510 HEAD@{3}: commit: got everything working the way I want
70b3696 HEAD@{4}: commit: upgrade rails, do some refactoring