28 lines
708 B
Plaintext
Executable File
28 lines
708 B
Plaintext
Executable File
#/usr/bin/bash
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output=$(v4l2-ctl --device=/dev/video4 --list-ctrls)
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brightness=$(echo "$output" | grep "brightness" | grep -oP 'value=\K\d+')
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contrast=$(echo "$output" | grep "contrast" | grep -oP 'value=\K\d+')
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CMD="v4l2-ctl --device=/dev/video4 --set-ctrl="
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case $1 in
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b) # Brightness
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if [ "$2" = 'u' ]; then
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bash -c "${CMD}brightness=$((brightness + 2))"
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elif [ "$2" = 'd' ]; then
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bash -c "${CMD}brightness=$((brightness - 2))"
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fi
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;;
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c) # Contrast
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if [ "$2" = 'u' ]; then
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bash -c "${CMD}contrast=$((contrast + 2))"
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elif [ "$2" = 'd' ]; then
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bash -c "${CMD}contrast=$((contrast - 2))"
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fi
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;;
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*)
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echo "Usage: $0 [b|c] [u|d]"
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;;
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esac
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