98 lines
3.0 KiB
Bash
Executable File
98 lines
3.0 KiB
Bash
Executable File
#!/bin/bash
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# Script to transfort .itc files into images (JPG or PNG)
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#
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# .itc files are located in ~/Music/iTunes/Album Artwork
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#
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# This script uses (/!\ needs ) ImageMagick's convert, hexdump, printf and dd.
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#
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# This script might be a little slow, You might want to look at Simon Kennedy's work at http://www.sffjunkie.co.uk/python-itc.html
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#
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# ~/{Library Path}/Album Artwork/Cache/D989408F65D05F99/04/13/04/D989408F65D05F99-EB5B7A9086F4B4D4.itc
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#
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# The filenames are an amalgam of the library ID (D989408F65D05F99) and the track's ID (EB5B7A9086F4B4D4).
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# The directory structure comes from the library ID and the last three digits of the track's ID converted to decimal,
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# ie 4D4 becomes 04, 13, 04.
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#
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AlbumArtwork="${HOME}/Music/iTunes 1/Album Artwork"
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DestinationDir="Artwork"
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IFS=$'\n'
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if [ ! -d "$DestinationDir" ]; then
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mkdir "$DestinationDir"
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echo "new Images dir"
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fi
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for file in `find "$AlbumArtwork" -name '*.itc'`; do
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start=0x11C
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exit=0;
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i=1;
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echo $file
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while [ 1 ]; do
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typeOffset=$(($start+0x30))
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imageType=$(hexdump -n 4 -s $typeOffset -e '"0x"4/1 "%02x" "\n"' $file)
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#If there is no next byte, jump to the next itc file.
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if [[ -z $imageType ]]; then
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break
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fi
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imageOffsetOffset=$(($start+8))
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itemSize=$(hexdump -n 4 -s $start -e '"0x"4/1 "%02x" "\n"' $file)
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imageOffset=$(hexdump -n 4 -s $imageOffsetOffset -e '"0x"4/1 "%02x" "\n"' $file)
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imageStart=$(($start+$imageOffset))
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imageSize=$(($itemSize-imageOffset))
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imageWidth=$(hexdump -n 4 -s $(($start+56)) -e '"0x"4/1 "%02x" "\n"' $file)
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imageWidth=$(printf "%d" $imageWidth)
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imageHeight=$(hexdump -n 4 -s $(($start+60)) -e '"0x"4/1 "%02x" "\n"' $file)
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imageHeight=$(printf "%d" $imageHeight)
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dir=$(dirname "$file")
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xbase=${file##*/} #file.etc
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xpref=${xbase%.*} #file prefix
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#echo $file
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#echo itemsize $itemSize
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#echo start $start
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#echo imageOffset $imageOffset
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#echo imageStart $imageStart
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#echo imageSize $imageSize
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#echo imageWidth $imageWidth
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#echo imageHeight $imageHeight
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if [[ $imageType -eq 0x504E4766 ]] || [[ $imageType -eq 0x0000000E ]] ; then
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targetFile="$DestinationDir/$xpref-$i.png"
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if [ ! -f "$targetFile" ]; then
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echo PNG
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dd skip=$imageStart count=$imageSize if="$file" of="$targetFile" bs=1 &> /dev/null
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fi
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elif [[ $imageType -eq 0x41524762 ]] ; then
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targetFile="$DestinationDir/$xpref-$i.png"
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if [ ! -f "$targetFile" ]; then
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echo ARGB
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dd skip=$imageStart count=$imageSize if="$file" of="$TMPDIR/test$i" bs=1 &> /dev/null
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#Using a matrix to convert ARGB to RGBA since imagemagick does only support rgba input
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convert -size $imageWidth"x"$imageHeight -depth 8 -color-matrix '0 1 0 0 0 0 1 0 0 0 0 1 1 0 0 0' rgba:"$TMPDIR/test$i" "$targetFile"
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fi
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elif [[ $imageType -eq 0x0000000D ]] ; then
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targetFile="$DestinationDir/$xpref-$i.jpg"
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if [ ! -f "$targetFile" ]; then
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echo JPG
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dd skip=$imageStart count=$imageSize if="$file" of="$targetFile" bs=1 &> /dev/null
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fi
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else
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echo $imageType
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exit=1
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break;
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fi
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start=$(($start+$itemSize))
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i=$(($i+1))
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done
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done |