added security camera scripts

3 files changed, 57 insertions, 0 deletions

diff --git a/capture.sh b/capture.sh
new file mode 100755
index 0000000..1043c88
--- /dev/null
+++ b/capture.sh
@@ -0,0 +1,33 @@
+#!/bin/bash
+#this script repeatedly captures images from a video device (e.g. /dev/video0) at regular intervals
+#and it compresses images into an .tar.gz after some number and deletes those images
+#and it deletes old archives after some number have been made
+
+MAX_SIZE=1073741824 #1G in bytes
+TIME_INTERVAL=15 #seconds between taking snapshots
+THRESHOLD_ARCHIVE=5760 #number of images after which archiving should be done. 5760 is one day if pics are every 15s
+THRESHOLD_REMOVE=30 #number of image archive tarballs after which a handful of the oldest archives will be deleted
+
+while [[ true ]]; do
+	d=`date +%Y%m%d_%H%M%S`
+	snapshot ${d}.png
+	ln -snf ${d}.png current.png
+	sleep ${TIME_INTERVAL}
+	if [[ `find . -maxdepth 1 -name "*png" | wc -l` -gt ${THRESHOLD_ARCHIVE} ]]; then
+	#if [[ `ls *png | wc -l` -gt ${THRESHOLD_ARCHIVE} ]]; then
+		echo "time to archive captured images"
+		mkdir archive${d}
+		mv *png archive${d}/
+		tar -czvf archive${d}.tar.gz archive${d}/*
+		echo "archive made. images compressed. now deleting source files."
+		rm -rf archive${d}
+	fi
+	if [[ `ls archive* 2&>/dev/null | wc -l` -gt ${THRESHOLD_REMOVE} ]]; then
+		echo "time to remove some old archived image sets"
+		rm `ls -t . | grep archive | tail -n 5` -rf
+	fi
+done
+
+
+#if [ `du . -b | awk '{print $1}'` -gt ${MAX_SIZE} ]; then
+
diff --git a/imgs2vid.sh b/imgs2vid.sh
new file mode 100755
index 0000000..a773ebe
--- /dev/null
+++ b/imgs2vid.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+#take a bunch of image files and turn them into a video
+
+if [[ ${#} != 2 ]]; then
+	echo "provide file pattern and destination filename"
+	exit 0
+fi
+echo $@
+echo "THIS IS SCRIPT IS NOT CURRENTLY WORKING"
+ffmpeg -framerate 8 -pattern_type glob -i "${1}" "${2}"
diff --git a/save.sh b/save.sh
new file mode 100755
index 0000000..7419c2b
--- /dev/null
+++ b/save.sh
@@ -0,0 +1,14 @@
+#!/bin/bash
+#security camera companion script
+#move recent images into a folder so they aren't deleted
+
+if [[ $1 ]]; then
+	n=${1}
+else
+	n=40
+fi
+
+mv `ls -rt *png | tail -n ${n}` save/
+chmod a-w save/*png
+#chmod a-w `ls -tr *png  | tail -n ${n}`
+