Gpio triggered recording

tools/preset_rec_cmd.txt

@@ -0,0 +1 @@
+640x128_s 4000

tools/raw2ogg2anim

@@ -2,57 +2,127 @@
 
 # needs: dcraw, double, netpbm tools, gstreamer, gifenc.sh
 
-if [ "$4" = "" ]; then echo "format: `basename $0` vname first last fps [d[d]]"; exit; fi
+
+#Determining the model of Raspberry Pi we're running on, to set an appropriate number of parallell processes
+if [ "`lscpu | grep 'Model' | grep -o 'A72'`" = "A72" ]; then
+  num_processes=40
+  echo "Model 4, running 40 parallell processes"
+else 
+  if [ "`lscpu | grep 'Model' | grep -o 'A53'`" = "A53" ]; then
+    num_processes=20
+    echo "Model 3, running 20 parallell processes"
+  else
+    num_processes=10
+    echo "couldn't determine model, running 10 parallell processes"
+  fi
+fi
+
+
+#The following three code blocks define functions to be called later
+#1. converts raw frames to png format
+dcraw_conversion() {
+  dcraw $f
+  echo -en "$f     \r"
+}
+
+
+#2. stretches lines so that videos recorded with line skips look better
+line_doubling() {
+  if [ "$5" = "" ]; then
+      ln -s $f $f.d
+  else
+    if [ "$5" = "d" ]; then
+      double $f > $f.d
+    else
+      double $f > $f.D
+      double $f.D > $f.d
+    fi
+  fi
+  echo -en "$f     \r"
+}
+
+
+#3. converts from intermediary format ppm to final image format png
+ppmtopng_conversion() {
+  pnmtopng $f > $f.png
+  echo -en "$f     \r"
+}
+
+
+# Taking user inputs
+if [ "$4" = "" ]; then echo "format: `basename $0` vname first last fps [-t] [-k]  [d[d]]"; exit; fi
+
+
+# If the user inputs "-t" as parameter 5, then we append the current date and time to the filename
+if [ "$5" = "-t" ]; then
+  echo "appending date and time to filename"
+  momentOfCapture=`date +%m.%d_T%H:%M:%S`
+fi
+
+
+# if the user adds the command line option -c or --count, ls | grep $1 is run in cwd,
+# and the new filename is incremented by one in relation to the highest numbered similar filename.
+
+#ls | grep $1
+
 
 echo "removing old auxiliary files"
 rm -f out.*.raw out.*.ppm out.*.ppm.[dDT] out.*.ppm.d.png
 
+
+# this command appears to be slower when parallellized, so it's a single process for the time being.
 echo "copying /dev/shm/out.????.raw files"
 for((f=$2; f<=$3; ++f))
 do
-  # cp /dev/shm/out.$(printf "%04d" $f).raw .
-  cat hd0.32k /dev/shm/out.$(printf "%04d" $f).raw >out.$(printf "%04d" $f).raw
+  cat /dev/shm/hd0.32k /dev/shm/out.$(printf "%04d" $f).raw >out.$(printf "%04d" $f).raw
   echo -en "$f     \r"
 done
-echo
+
 
 echo "dcraw each .raw file (to .ppm)"
 for f in out.*.raw
 do
-  dcraw $f
-  echo -en "$f     \r"
+  ((i=i%num_processes)); ((i++==0)) && wait
+  dcraw_conversion &
 done
-echo
+wait
+
 
 echo ".ppm -> .ppm.d"
 for f in out.*.ppm
 do
-  if [ "$5" = "" ]; then
-    ln -s $f $f.d 
-  else
-    if [ "$5" = "d" ]; then
-      double $f > $f.d
-    else
-      double $f > $f.D
-      double $f.D > $f.d
-    fi
-  fi
-  echo -en "$f     \r"
+  ((i=i%num_processes)); ((i++==0)) && wait
+  line_doubling &
 done
-echo
+wait
+
 
 echo ".ppm.d -> .ppm.d.png"
 for f in out.*.ppm.d
 do
-  pnmtopng $f > $f.png
-  echo -en "$f     \r"
+  ((i=i%num_processes)); ((i++==0)) && wait
+  ppmtopng_conversion &
 done
-echo
+wait
+
 
 echo "now creating $1.ogg"
 gst-launch-1.0 multifilesrc location="out.%04d.ppm.d.png" index=$2 caps="image/png,framerate=\(fraction\)$4/1" ! pngdec ! videorate ! videoconvert ! videorate ! theoraenc ! oggmux ! filesink location="$1.ogg"
 
-echo "now creating $1.anim.gif"
-gifenc.sh $1.ogg $1.anim.gif
+
+if [ "$5" = "-T" ]; then
+  echo "now creating $1-$momentOfCapture.gif"
+  gifenc.sh $1.ogg $1-$momentOfCapture.gif
+else
+  echo "now creating $1.gif"
+  gifenc.sh $1.ogg $1.gif
+fi
+
+
+#comment the following two line if you want to keep individual image frames and other files in the current directory
+[if "$6" != "-k" ]; then
+  echo "removing new auxiliary files"
+  rm -f out.*
+fi
 
 echo "done"

tools/recording_trigger.sh

@@ -0,0 +1,55 @@
+#!/bin/bash
+
+# This script reads the state of a hardcoded pin every set interval, and if the pin is read 'HIGH',
+# a user-defined recording is launched. After the command is launched, the script exits.
+
+
+# First the user lets us know whether to launch a preset or custom command
+echo  'Please enter the recording command you wish to launch:'
+echo  'If you instead want to read a preset command from a file, press key f and enter'
+rec_cmd=
+while [[ $rec_cmd = "" ]]; do
+  read rec_cmd
+done
+
+
+# Read command from a file if rec_cmd == f, otherwise store input as command
+if [[ $rec_cmd = "f" ]]; then
+  rec_cmd=$(<preset_rec_cmd.txt)
+  echo "Running preset command upon triggering: "
+  echo $rec_cmd
+else
+  echo "running this command upon triggering: "
+  echo $rec_cmd
+fi
+
+
+# Set desired input pin
+echo "which pin would you like to read? (BCM numbering scheme) "
+read input_pin
+if [ ! -e /sys/class/gpio/gpio$input_pin ]; then
+    echo "$input_pin" > /sys/class/gpio/export
+fi
+echo "pin $input_pin is set as input pin"
+
+
+#reading the input pin continuously, every interval
+declare -i i
+while [ 1 ]; do
+  status=$(< /sys/class/gpio/gpio$input_pin/value)
+  #echo $status
+  if [[ $status = "1" ]]; then
+    i+=1
+  fi
+  sleep 0.1 #seconds
+  if [[ $status != "1" && i>="1" ]]; then
+    i=0
+  fi
+  if [[ $i = "5" ]]; then
+    break
+  fi
+done
+
+
+#run commmand
+$rec_cmd