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globals.sh
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globals.sh
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export dist_dir="${l2t_dir}/dist/${set_id}"
export orig_dir="${dist_dir}/orig"
export resi_dir="${dist_dir}/resi"
export conv_dir="${dist_dir}/conv"
export icon_dir="${dist_dir}/icon"
export trim_dir="${dist_dir}/trim"
export fuzz_dir="${dist_dir}/fuzz"
export icon_config="${dist_dir}/icon.conf"
export page_file="${orig_dir}/page.html"
export fuzz_cap=20
export tool_dir="${l2t_dir}/tool"
export webp_dir="${tool_dir}/libwebp"
export webp_version='1.2.2'
export PATH="${PATH}:${webp_dir}/examples"
shopt -s nullglob
function get_pack_type ()
{
echo $(cat "${page_file}" | pup --plain 'div[data-widget-id=MainSticker] attr{data-preview}' | jq -r '.type')
}
function print_pack_type ()
{
echo -n "Determining pack type... "
get_pack_type
}
function get_pack_name ()
{
echo $(cat "${page_file}" | pup --plain 'p[data-test="sticker-name-title"] text{}')
}
function print_pack_name ()
{
echo -n "Determining pack name... "
get_pack_name
}
# returns 'apng' for animated, 'png_pipe' for static
function get_img_type ()
{
echo $(ffprobe -hide_banner -loglevel 0 -print_format json -show_format "${1}" | jq -r '.format.format_name')
}
function print_png_type ()
{
echo -n "Determining PNG type... "
get_img_type
}
function is_transparent_png ()
{
echo $(identify -format '%A\n' ${1})
}
# $1: source PNG file
# $2: target PNG file
# $3: size in NxN format
# $4: if true, pad to precise size (required for pack icons)
function resize_png ()
{
if [ ! -z "${4+x}" ] && [ ${4} = true ]
then
convert_extra_flags=" -gravity center -background none -extent ${3}"
else
convert_extra_flags=''
fi
png_type=$(get_img_type "${1}")
case ${png_type} in
apng)
png_file=$(basename "${1}")
target_dir=$(dirname "${2}")
temp_dir="${target_dir}/${png_file}-temp"
mkdir "${temp_dir}"
pushd "${temp_dir}" > /dev/null
\rm -f *
cp "${1}" .
apngdis "${png_file}" > /dev/null
echo -en "\e[36m${png_file}\e[0m:\e[35munpacked\e[0m "
\rm -f "${png_file}"
for j in *.png
do
convert "${j}" -resize "${3}" ${convert_extra_flags} "${j}"
done
echo -en "\e[36m${png_file}\e[0m:\e[34mresized\e[0m "
apngasm "${png_file}" apngframe*.png > /dev/null
echo -en "\e[36m${png_file}\e[0m:\e[32mrepacked\e[0m "
cp --no-target-directory "${png_file}" "${2}"
popd > /dev/null
\rm -rf "${temp_dir}"
;;
png_pipe|webp_pipe)
convert "${1}" -resize "${3}" ${convert_extra_flags} "${2}"
echo -en "\e[36m $(basename ${1})\e[0m:\e[32mresized\e[0m "
;;
*)
exit 1
esac
}
# $1: target dir
# $2: array of PNG file full paths
# TODO maybe use source dir for $2 to avoid messy arrays?
function resize_pngs ()
{
# gotta rebuild param array manually
target_dir="${1}"
shift
pngs=("$@")
batch_size=$(nproc)
echo "Starting batch resize on ${batch_size} threads... "
j=0
set +e
(
for (( i=0; i<${#pngs[@]} ; i++ ))
do
((j=j%batch_size)); ((j++==0)) && wait
resize_png "${pngs[i]}" "${target_dir}/$(basename "${pngs[i]}")" '512x512' &
done
wait
)
set -e
echo -e "\nBatch resize done."
}
function setup_animdump
{
have_animdump=0
which anim_dump && have_animdump=1 || true
if [ ${have_animdump} -eq 1 ]
then
return
fi
echo 'Setting up anim_dump...'
mkdir -p "${tool_dir}"
echo 'Obtaining libwebp sources...'
git clone --quiet https://github.com/webmproject/libwebp.git "${webp_dir}"
pushd "${webp_dir}" > /dev/null
git fetch --all --tags --quiet
git checkout --quiet "tags/v${webp_version}"
echo 'Running libwebp autogen.sh...'
BUILD_ANIMDIFF=1 ./autogen.sh > /dev/null
echo 'Configuring libwebp...'
./configure --enable-libwebpdecoder --enable-libwebpextras > /dev/null
echo 'Building libwebp...'
make -j$(nproc) > /dev/null
popd > /dev/null
echo 'anim_dump setup done.'
}
# $1: source PNG or WebP file
# $2: target WEBM file
function convert_img_webm ()
{
png_type=$(get_img_type "${1}")
case ${png_type} in
apng)
png_file=$(basename "${1}")
ffmpeg -i "${1}" -b:v 512k "${2}" 2> /dev/null
echo -en "\e[36m${png_file}\e[0m:\e[32mdone\e[0m "
;;
png_pipe)
echo -en "\e[36m $(basename ${1})\e[0m:\e[31mskipping\e[0m "
;;
webp_pipe)
webp_file=$(basename "${1}")
target_dir=$(dirname "${2}")
temp_dir="${target_dir}/${webp_file}-temp"
\rm -rf "${temp_dir}"
mkdir "${temp_dir}"
anim_dump -folder "${temp_dir}" "${1}" > /dev/null
echo -en "\e[36m${webp_file}\e[0m:\e[35munpacked\e[0m "
# settled with these numbers after some trial-n-error
# might need to adjust them later
ffmpeg -framerate 19 -i "${temp_dir}/dump_%04d.png" -b:v 512k "${2}" 2> /dev/null
echo -en "\e[36m${webp_file}\e[0m:\e[32mdone\e[0m "
\rm -rf "${temp_dir}"
;;
*)
exit 1
esac
}
function convert_jpg ()
{
convert "${1}" "${2}"
}
# $1: source PNG file
# $2: target dir
function fuzz_png ()
{
png_file=$(basename "${1}")
local i
batch_size=$(nproc)
echo -n "Fuzzing ${png_file} with ${batch_size} threads... "
j=0
set +e
(
for (( i=1; i<=${fuzz_cap} ; i++ ))
do
((j=j%batch_size)); ((j++==0)) && wait
color=$(convert "${1}" -format "%[pixel:p{0,0}]" info:-) && \
convert "${1}" -alpha off -bordercolor $color -border 1 \
\( +clone -fuzz "${i}%" -fill none -floodfill +0+0 $color -alpha extract -geometry 200% -blur 0x0.5 -morphology erode square:1 -geometry 50% \) \
-compose CopyOpacity -composite -shave 1 \
"${2}/${png_file%.*}_fuzz$(printf "%02d" ${i}).png" &
done
wait
)
set -e
echo "done."
}