63 lines
1.6 KiB
Bash
63 lines
1.6 KiB
Bash
#!/usr/bin/env bash
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# Script args:
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# 1: mpd host address
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# 2: mpd file path
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# 3: Path to cover directory
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# 4: Prefix for cover file name
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# 5: filename
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# Check if imagemagick is installed
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if ! command -v convert &> /dev/null
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then
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echo "No data"
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exit 0
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fi
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# Create cover path
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if [ ! -d "${3}" ]; then
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mkdir -p "${3}"
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fi
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# Use hash as cover identifier in path
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coverPath="${3}/${5}"
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# Running multiple widget instances on the same system: Some other widget on the same
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# system already started to request a cover, so this instance wont and waits instead.
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lockfile="${coverPath}.lock"
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if [ -f "${lockfile}" ]; then
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i=1
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# Observed worst case download time so far 30 seconds
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waitTarget=60
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while [ -f "${lockfile}" -a $i -lt $waitTarget ]; do
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sleep 1
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((i = i + 1))
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done
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# Alas sometimes things go wrong while downloading, e.g. a plasmashell crash. This
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# recovers eventually.
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if [ $i = $waitTarget ]; then
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rm "${lockfile}"
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fi
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else
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# Migrating from from 4.x to 5.0: remove old, unprocessed images without suffix
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if [ -f "${coverPath}" ]; then
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rm "${coverPath}"
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fi
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fi
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if [ ! -f "${coverPath}" ]; then
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touch "${lockfile}"
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mpc --host=${1} readpicture "${2}" >"${coverPath}" 2>&1
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# @SOMEDAY find a more efficient solution
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if grep -q volume "${coverPath}"; then
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echo "No data"
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else
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convert "${coverPath}" -resize 1500x\> "${coverPath}-large.jpg"
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convert "${coverPath}" -resize 64x64 "${coverPath}-small.jpg"
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fi
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rm "${coverPath}"
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rm "${lockfile}"
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fi
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exit 0
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