52 lines
1.6 KiB
Bash
Executable File
52 lines
1.6 KiB
Bash
Executable File
#/bin/bash
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trap 'stty sane; clear; exit 0' SIGINT SIGTERM
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dir="$(dirname "$0")"
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[ -f "$dir/webcam.conf" ] && source "$dir/webcam.conf"
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BRIGHTNESS="${DEFAULT_BRIGHTNESS:-auto}"
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EXPOSURE="${DEFAULT_EXPOSURE:-auto}"
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STEP="${STEP:-5}"
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# clamps $1+$2 to 0-100, treating "auto" as a 50 starting point
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adjust() {
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local cur=$1 delta=$2 val
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[ "$cur" = "auto" ] && cur=50
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val=$((cur + delta))
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(( val < 0 )) && val=0
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(( val > 100 )) && val=100
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echo "$val"
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}
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while true; do
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clear
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export BRIGHTNESS EXPOSURE
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./webcam2ascii.sh
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echo
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echo "brightness: ${BRIGHTNESS} exposure: ${EXPOSURE}"
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echo "[+/-] brightness [./,] exposure [r] reset to auto [c] capture [Ctrl+C] quit"
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if read -n 1 -t 0.05 -s key; then
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case "$key" in
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"+") BRIGHTNESS=$(adjust "$BRIGHTNESS" "$STEP") ;;
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"-") BRIGHTNESS=$(adjust "$BRIGHTNESS" "-$STEP") ;;
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".") EXPOSURE=$(adjust "$EXPOSURE" "$STEP") ;;
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",") EXPOSURE=$(adjust "$EXPOSURE" "-$STEP") ;;
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r|R) BRIGHTNESS="${DEFAULT_BRIGHTNESS:-auto}"; EXPOSURE="${DEFAULT_EXPOSURE:-auto}" ;;
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c|C)
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timestamp=$(date +%Y%m%d-%H%M%S)
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cp web-cam-shot.jpg "photo-$timestamp.jpg"
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cp ascii-img.txt "ascii-img-$timestamp.txt"
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clear
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cat "ascii-img-$timestamp.txt"
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echo
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echo "Saved photo-$timestamp.jpg and ascii-img-$timestamp.txt"
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./txt2printr.sh "ascii-img-$timestamp.txt"
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read -n 1 -s -p "Press any key to resume live preview, Ctrl+C to quit..."
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;;
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esac
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fi
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done
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