mirror of
https://github.com/KrumpetPirate/AAXtoMP3.git
synced 2024-11-18 03:08:57 +01:00
Inserting code comments for the next guy.
This commit is contained in:
upuv
parent
f2c78da132
commit
ac656f9723
195
AAXtoMP3
195
AAXtoMP3
@ -41,13 +41,14 @@ fi
|
||||
# Variable validation
|
||||
set -o errexit -o noclobber -o nounset -o pipefail
|
||||
|
||||
# -----
|
||||
# Detect which annoying version fo grep we have
|
||||
GREP=$(grep --version | grep -q GNU && echo "grep" || echo "ggrep")
|
||||
|
||||
if ! [[ $(type -P "$GREP") ]]; then
|
||||
echo "$GREP (GNU grep) is not in your PATH"
|
||||
echo "Without it, this script will break."
|
||||
echo "On macOS, you may want to try: brew install grep"
|
||||
exit 1
|
||||
echo "$GREP (GNU grep) is not in your PATH"
|
||||
echo "Without it, this script will break."
|
||||
echo "On macOS, you may want to try: brew install grep"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
# -----
|
||||
@ -95,124 +96,140 @@ debug_file() {
|
||||
|
||||
# log
|
||||
log() {
|
||||
echo "$(date "+%F %T%z") ${1}"
|
||||
echo "$(date "+%F %T%z") ${1}"
|
||||
}
|
||||
|
||||
# Clean up if someone hits ^c
|
||||
trap 'rm -r -f "${working_directory}"' EXIT
|
||||
working_directory=`mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir'`
|
||||
metadata_file="${working_directory}/metadata.txt"
|
||||
|
||||
# -----
|
||||
# Inspect the AAX and extract the metadata associated with the file.
|
||||
save_metadata() {
|
||||
local media_file
|
||||
media_file="$1"
|
||||
ffprobe -i "$media_file" 2> "$metadata_file"
|
||||
debug "Metadata file $metadata_file"
|
||||
debug_file "$metadata_file"
|
||||
local media_file
|
||||
media_file="$1"
|
||||
ffprobe -i "$media_file" 2> "$metadata_file"
|
||||
debug "Metadata file $metadata_file"
|
||||
debug_file "$metadata_file"
|
||||
}
|
||||
|
||||
# -----
|
||||
# Reach into the meta data and extract a specific value.
|
||||
# Note the white space clean up could be well cleaner.
|
||||
get_metadata_value() {
|
||||
local key
|
||||
key="$1"
|
||||
normalize_whitespace "$($GREP --max-count=1 --only-matching "${key} *: .*" "$metadata_file" | cut -d : -f 2- | sed -e 's#/##g;s/ (Unabridged)//' | tr -s '[:blank:]' ' ')"
|
||||
local key
|
||||
key="$1"
|
||||
normalize_whitespace "$($GREP --max-count=1 --only-matching "${key} *: .*" "$metadata_file" | cut -d : -f 2- | sed -e 's#/##g;s/ (Unabridged)//' | tr -s '[:blank:]' ' ')"
|
||||
}
|
||||
|
||||
# -----
|
||||
# specific varient of get_metadata_value bitrate is important for transcoding.
|
||||
get_bitrate() {
|
||||
get_metadata_value bitrate | $GREP --only-matching '[0-9]\+'
|
||||
get_metadata_value bitrate | $GREP --only-matching '[0-9]\+'
|
||||
}
|
||||
|
||||
# -----
|
||||
# simple function to turn tabs and multiple spaces into a single space.
|
||||
normalize_whitespace() {
|
||||
echo $*
|
||||
echo $*
|
||||
}
|
||||
|
||||
# ========================================================================
|
||||
# Main Transcode Loop
|
||||
for path
|
||||
do
|
||||
log "Decoding ${path} with auth code ${auth_code}..."
|
||||
log "Decoding ${path} with auth code ${auth_code}..."
|
||||
|
||||
# Check for Presense of Audiobook
|
||||
if [[ ! -r "${path}" ]] ; then
|
||||
echo "ERROR: Input Audiobook file $path missing"
|
||||
exit 1
|
||||
fi
|
||||
# Check for Presense of Audiobook
|
||||
if [[ ! -r "${path}" ]] ; then
|
||||
echo "ERROR: Input Audiobook file $path missing"
|
||||
exit 1
|
||||
fi
|
||||
|
||||
save_metadata "${path}"
|
||||
genre=$(get_metadata_value genre)
|
||||
artist=$(get_metadata_value artist)
|
||||
title=$(get_metadata_value title | sed 's/'\:'/'-\ '/g' | xargs -0)
|
||||
if [ ! -z targetdir ] ; then
|
||||
output_directory="${targetdir}/${genre}/${artist}/${title}"
|
||||
else
|
||||
output_directory="$(dirname "${path}")/${genre}/${artist}/${title}"
|
||||
fi
|
||||
mkdir -p "${output_directory}"
|
||||
full_file_path="${output_directory}/${title}.${extension}"
|
||||
bitrate="$(get_bitrate)k"
|
||||
album_artist="$(get_metadata_value album_artist)"
|
||||
album="$(get_metadata_value album)"
|
||||
album_date="$(get_metadata_value date)"
|
||||
copyright="$(get_metadata_value copyright)"
|
||||
# -----
|
||||
# Make sure everything is a variable. Simplifying CMD interpretation
|
||||
save_metadata "${path}"
|
||||
genre=$(get_metadata_value genre)
|
||||
artist=$(get_metadata_value artist)
|
||||
title=$(get_metadata_value title | sed 's/'\:'/'-\ '/g' | xargs -0)
|
||||
if [ ! -z targetdir ] ; then
|
||||
output_directory="${targetdir}/${genre}/${artist}/${title}"
|
||||
else
|
||||
output_directory="$(dirname "${path}")/${genre}/${artist}/${title}"
|
||||
fi
|
||||
mkdir -p "${output_directory}"
|
||||
full_file_path="${output_directory}/${title}.${extension}"
|
||||
bitrate="$(get_bitrate)k"
|
||||
album_artist="$(get_metadata_value album_artist)"
|
||||
album="$(get_metadata_value album)"
|
||||
album_date="$(get_metadata_value date)"
|
||||
copyright="$(get_metadata_value copyright)"
|
||||
|
||||
# Big long DEBUG output. Fully describes the settings used for transcoding. I could probably do this better.
|
||||
debug "$(printf '\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %sn%-18s: %s' title "${title}" auth_code "${auth_code}" mode "${mode}" path "${path}" codec "${codec}" bitrate "${bitrate}" artist "${artist}" album_artist "${album_artist}" album "${album}" album_date "${album_date}" genre "${genre}" copyright "${copyright}" full_file_path "${full_file_path}" metadata_file "${metadata_file}" working_directory "${working_directory}" )"
|
||||
# Big long DEBUG output. Fully describes the settings used for transcoding. I could probably do this better.
|
||||
debug "$(printf '\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %sn%-18s: %s' title "${title}" auth_code "${auth_code}" mode "${mode}" path "${path}" codec "${codec}" bitrate "${bitrate}" artist "${artist}" album_artist "${album_artist}" album "${album}" album_date "${album_date}" genre "${genre}" copyright "${copyright}" full_file_path "${full_file_path}" metadata_file "${metadata_file}" working_directory "${working_directory}" )"
|
||||
|
||||
# This is the primary transcode. All the heavy lifting is here.
|
||||
</dev/null ffmpeg -loglevel error -stats -activation_bytes "${auth_code}" -i "${path}" -vn -codec:a "${codec}" -ab ${bitrate} -map_metadata -1 -metadata title="${title}" -metadata artist="${artist}" -metadata album_artist="${album_artist}" -metadata album="${album}" -metadata date="${album_date}" -metadata track="1/1" -metadata genre="${genre}" -metadata copyright="${copyright}" "${full_file_path}"
|
||||
# -----
|
||||
# This is the main work horse command. This is the primary transcoder.
|
||||
# This is the primary transcode. All the heavy lifting is here.
|
||||
</dev/null ffmpeg -loglevel error -stats -activation_bytes "${auth_code}" -i "${path}" -vn -codec:a "${codec}" -ab ${bitrate} -map_metadata -1 -metadata title="${title}" -metadata artist="${artist}" -metadata album_artist="${album_artist}" -metadata album="${album}" -metadata date="${album_date}" -metadata track="1/1" -metadata genre="${genre}" -metadata copyright="${copyright}" "${full_file_path}"
|
||||
|
||||
log "Created ${full_file_path}."
|
||||
log "Created ${full_file_path}."
|
||||
|
||||
# Grab the cover art if available.
|
||||
cover_path="${output_directory}/cover.jpg"
|
||||
# Grab the cover art if available.
|
||||
cover_path="${output_directory}/cover.jpg"
|
||||
|
||||
log "Extracting cover into ${cover_path}..."
|
||||
</dev/null ffmpeg -loglevel error -activation_bytes "${auth_code}" -i "${path}" -an -codec:v copy "${cover_path}"
|
||||
log "Extracting cover into ${cover_path}..."
|
||||
</dev/null ffmpeg -loglevel error -activation_bytes "${auth_code}" -i "${path}" -an -codec:v copy "${cover_path}"
|
||||
|
||||
# If we want multiple file we take the big mp3 and split it by chapter.
|
||||
if [ "${mode}" == "chaptered" ]; then
|
||||
# Playlist m3u support
|
||||
playlist_file="${output_directory}/${title}.m3u"
|
||||
log "Creating PlayList ${title}.m3u"
|
||||
echo '#EXTM3U' > "${playlist_file}"
|
||||
# -----
|
||||
# OK now spit the file if that's what you want.
|
||||
# If we want multiple file we take the big mp3 and split it by chapter.
|
||||
if [ "${mode}" == "chaptered" ]; then
|
||||
# Playlist m3u support
|
||||
playlist_file="${output_directory}/${title}.m3u"
|
||||
log "Creating PlayList ${title}.m3u"
|
||||
echo '#EXTM3U' > "${playlist_file}"
|
||||
|
||||
chaptercount=$($GREP -Pc "Chapter.*start.*end" $metadata_file)
|
||||
log "Extracting ${chaptercount} chapter files from ${full_file_path}..."
|
||||
chaptercount=$($GREP -Pc "Chapter.*start.*end" $metadata_file)
|
||||
log "Extracting ${chaptercount} chapter files from ${full_file_path}..."
|
||||
|
||||
chapternum=1
|
||||
while read -r -u9 first _ _ start _ end
|
||||
do
|
||||
if [[ "${first}" = "Chapter" ]]
|
||||
then
|
||||
read -r -u9 _
|
||||
read -r -u9 _ _ chapter
|
||||
chapter_title="${title} - $(printf %0${#chaptercount}d $chapternum) ${chapter}"
|
||||
chapter_file="${output_directory}/${chapter_title}.${extension}"
|
||||
chapternum=1
|
||||
while read -r -u9 first _ _ start _ end
|
||||
do
|
||||
if [[ "${first}" = "Chapter" ]]; then
|
||||
read -r -u9 _
|
||||
read -r -u9 _ _ chapter
|
||||
chapter_title="${title} - $(printf %0${#chaptercount}d $chapternum) ${chapter}"
|
||||
chapter_file="${output_directory}/${chapter_title}.${extension}"
|
||||
|
||||
# the ID3 tags must only be specified for *.mp3 files,
|
||||
# the other container formats come with their own
|
||||
# tagging mechanisms.
|
||||
id3_version_param=""
|
||||
if test "${extension}" = "mp3"; then
|
||||
id3_version_param="-id3v2_version 3"
|
||||
fi
|
||||
# the ID3 tags must only be specified for *.mp3 files,
|
||||
# the other container formats come with their own
|
||||
# tagging mechanisms.
|
||||
id3_version_param=""
|
||||
if test "${extension}" = "mp3"; then
|
||||
id3_version_param="-id3v2_version 3"
|
||||
fi
|
||||
|
||||
# Big Long chapter debug I could probably do this better.
|
||||
debug "$(printf '\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s' cover_path "${cover_path}" start "${start%?}" end "${end}" id3_version_param "${id3_version_param}" chapternum "${chapternum}" chapter_title "${chapter_title}" chapter_file "${chapter_file}" )"
|
||||
# Big Long chapter debug I could probably do this better.
|
||||
debug "$(printf '\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s\n%-18s: %s' cover_path "${cover_path}" start "${start%?}" end "${end}" id3_version_param "${id3_version_param}" chapternum "${chapternum}" chapter_title "${chapter_title}" chapter_file "${chapter_file}" )"
|
||||
|
||||
# Extract chapter by time stamps start and finish of chapter.
|
||||
</dev/null ffmpeg -loglevel error -stats -i "${full_file_path}" -i "${cover_path}" -ss "${start%?}" -to "${end}" -map 0:0 -map 1:0 -acodec copy ${id3_version_param} \
|
||||
-metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" -metadata track="${chapternum}" -metadata title="${chapter_title}" \
|
||||
"${chapter_file}"
|
||||
|
||||
duration=$(echo "${end} - ${start%?}" | bc)
|
||||
echo "#EXTINF:${duration%.*},${title} - ${chapter}" >> "${playlist_file}"
|
||||
echo "${chapter_title}.${extension}" >> "${playlist_file}"
|
||||
chapternum=$((chapternum + 1 ))
|
||||
fi
|
||||
done 9< "$metadata_file"
|
||||
rm "${full_file_path}"
|
||||
log "Done creating chapters. Chaptered files contained in ${output_directory}."
|
||||
fi
|
||||
# Extract chapter by time stamps start and finish of chapter.
|
||||
</dev/null ffmpeg -loglevel error -stats -i "${full_file_path}" -i "${cover_path}" -ss "${start%?}" -to "${end}" -map 0:0 -map 1:0 -acodec copy ${id3_version_param} \
|
||||
-metadata:s:v title="Album cover" -metadata:s:v comment="Cover (Front)" -metadata track="${chapternum}" -metadata title="${chapter_title}" \
|
||||
"${chapter_file}"
|
||||
|
||||
# OK lets get what need for the next chapter in the Playlist m3u file.
|
||||
duration=$(echo "${end} - ${start%?}" | bc)
|
||||
echo "#EXTINF:${duration%.*},${title} - ${chapter}" >> "${playlist_file}"
|
||||
echo "${chapter_title}.${extension}" >> "${playlist_file}"
|
||||
chapternum=$((chapternum + 1 ))
|
||||
fi
|
||||
done 9< "$metadata_file"
|
||||
rm "${full_file_path}"
|
||||
log "Done creating chapters. Chaptered files contained in ${output_directory}."
|
||||
fi
|
||||
|
||||
log "Done. ${title}"
|
||||
rm "${metadata_file}"
|
||||
log "Done. ${title}"
|
||||
rm "${metadata_file}"
|
||||
done
|
||||
|
||||
Loading…
Reference in New Issue
Block a user