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33 lines
567 B
33 lines
567 B
#!/usr/bin/env bash
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set -eu
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if [ "$#" -ne 2 ]; then
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echo
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echo "Syntax: $0 [IMAGE.png] [NAME]"
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echo
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echo 'IMAGE.png -> screenshot-NAME.png + screenshot-NAME-small.png'
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echo
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exit 1
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fi
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set -v
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IMAGE_FILE="$1"
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NAME="$2"
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cat "$IMAGE_FILE" \
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| pngtopnm \
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| pnmtopng -compression 9 \
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> "screenshot-$NAME.png"
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cat "screenshot-$NAME.png" \
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| pngtopnm \
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| pnmscale -ysize 128 \
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> "screenshot-$NAME-small.pnm"
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pnmquant 256 "screenshot-$NAME-small.pnm" \
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| pnmtopng -compression 9 \
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> "screenshot-$NAME-small.png"
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rm -f "screenshot-$NAME-small.pnm"
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