BallonSonde/acquisition_process/1_capture

#!/bin/bash

source ~/BallonSonde/variables.sh

CONVERTLL_PATH="/home/pi/BallonSonde/convert_ll_dec.py"
READ_NMEA_PATH="/home/pi/BallonSonde/read_nmea.py"

rm -rf /ramfs/*.jpg

echo "=> Acquisition on !"
DATE=$(date +%y%m%d_%H%M%S)

###########################################
# Si présence d'un GPS quelconque 
# On va traîter les infos et les intégrer 
# dans les métadatas.

acquire_with_gps() {

DATA=$(cat /ramfs/.out)
NS=$(echo $DATA| tr ' ' '\n' | grep NS | cut -d'=' -f2 | cut -d',' -f1)
EW=$(echo $DATA| tr ' ' '\n' | grep EW | cut -d'=' -f2 | cut -d',' -f1)

LAT=$(echo $DATA| tr ' ' '\n' | grep 'lat=' | cut -d'=' -f2 | cut -d',' -f1)
echo "Latitude $LAT"
LATD=$($CONVERTLL_PATH $LAT | grep "d:" | cut -d':' -f2)
LATM=$($CONVERTLL_PATH $LAT | grep "m:" | cut -d':' -f2)
LATS=$($CONVERTLL_PATH $LAT | grep "s:" | cut -d':' -f2 | sed 's/\.//' )
echo "$LATD $LATM $LATS"

LON=$(echo $DATA| tr ' ' '\n' | grep 'lon=' | cut -d'=' -f2 | cut -d',' -f1)
echo "Longitude : $LON"
LOND=$($CONVERTLL_PATH $LON| grep "d:" | cut -d':' -f2)
LONM=$($CONVERTLL_PATH $LON | grep "m:" | cut -d':' -f2)
LONS=$($CONVERTLL_PATH $LON | grep "s:" | cut -d':' -f2 | sed 's/\.//')
echo "$LOND $LONM $LONS"

ALTITUDE=$(echo $DATA| tr ' ' '\n' | grep 'alt=' | cut -d'=' -f2 | cut -d',' -f1)
echo "$ALTITUDE meters ! Wooo so hiiigh !"

# Creation du script pour ajout des données Exif dans le JPG
cat <<EOF > /ramfs/.conf_exif
    # Ajouter aux metadatas les informations de geolocalisation
    # 'add' pour ajouter les informations
    # 'set' pour remplacer celles déjà exisante
    # 'del' pour les supprimer (sans préciser de valeur)
    add Exif.GPSInfo.GPSLatitudeRef ${NS}
    add Exif.GPSInfo.GPSLatitude ${LATD}/1 ${LATM}/1 ${LATS}/10000
    add Exif.GPSInfo.GPSLongitudeRef ${EW}
    add Exif.GPSInfo.GPSLongitude ${LOND}/1 ${LONM}/1 ${LONS}/10000
EOF

echo $LAT
if [ "$LAT" == "NO_DATA" ]; then
	echo "Don't have GPS datas, continue without these datas"
else
	exiv2 -m /ramfs/.conf_exif /ramfs/$DATE.jpg
	exiftool -GPSAltitude=$ALTITUDE /ramfs/$DATE.jpg -overwrite_original
fi

cp /ramfs/$DATE.jpg ~/_Pictures
echo "Picz $DATE.jpg saved in RAM and is flagged to .canbevoncerted"
echo "$DATE.jpg" > /ramfs/.canbeconvert
}

##########################################
# Pas de GPS, pas de métadatas.

acquire_without_gps() {

cp /ramfs/$DATE.jpg ~/_Pictures
echo "$DATE.jpg" > /ramfs/.canbeconvert
echo "Picz $DATE.jpg saved in RAM and is flagged to .canbevoncerted"
}


##########################################
# Acquisition de l'image 
# Boucle principale

raspistill -o /ramfs/$DATE.jpg
if [ $? -eq 0 ]; then

    if [[ $HAVEGPS == 1 ]]
    then
        $READ_NMEA_PATH > /ramfs/.out
        cat /ramfs/.out | grep "Pas de signal GPS"

        if [[ $? -eq 0 ]]; then
            echo "Pas de signal GPS"
	    acquire_without_gps
        else
            echo "Signal GPS OK"
	    acquire_with_gps
        fi

    else
        acquire_without_gps
    fi

    sleep $DELAY_ACQUISITION

else
  echo "Picz failed to be acquired..."
  /home/pi/BallonSonde/tx_process/4_tx_file /home/pi/BallonSonde/sound/error_camera.wav
fi