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#!/bin/bash
# takepix.sh SJP 10 January 2017
# Version 2: PUSH photos to STAN rather than waiting for STAN to pull them by scp.
#
# Create a file called 'picdir.config', containing paths to your local photos and
# the storage location on your equivalent of STAN, or 'cam Herder' raspi. It must overwrite
# the following variable assignments, which are shown as examples:
# use literal user name. Shell expansions may not work when this script is run by a service!
picdir="/path/to/my/photos" # overwritten by sourcing from .picdir.config
camherder="STAN:/home/path/to/stored/photos"
if [ -e picdir.config ]; then
. picdir.config # source directory name from local config file
else echo "picdir.config does not exist"; exit 1
fi
#echo camherder = $camherder
picdate=$(date +%Y-%m-%d_%H%M)
thispic=$picdir/$picdate.jpg
artist=$(hostname); artist=${artist,,} # force to lower case
jpgQuality="90"
# echo thispic = $thispic
case ${artist^^} in
LUCERNE)
/opt/vc/bin/raspistill -vf -hf -x IFD1.Artist=${artist} -q $jpgQuality -md 4: -o $thispic
;;
NEATHERD)
/opt/vc/bin/raspistill -x IFD1.Artist=${artist} -q $jpgQuality -md 4: -o $thispic
;;
*)
/opt/vc/bin/raspistill -x IFD1.Artist=${artist} -q $jpgQuality -md 4: -o $thispic
;;
esac
# Copy pic to STAN, and place it in proper subdirectory (which of course must exist on STAN).
artist=${artist,,} # force to lower case
scp $thispic $camherder/$artist/.
touch bump.txt # this will trigger the systemd PATH unit at the other end
scp bump.txt $camherder/.
rm $thispic
# Note: we do no image processing on this pi, because it has so little RAM
# left after devoting 128MB to the GPU (camera).
# STAN does all the heavy lifting:
# 1) delete nightshots (where threshold pixel value is not met)
# 2) resize and unsharp mask ready for display on the internet.
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