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add new parser for overdrive media markers

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This commit is contained in:
jmt-gh 2022-06-12 00:53:56 -07:00
parent 5643c846ee
commit 9877b139f6
2 changed files with 104 additions and 101 deletions
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104
server/objects/mediaTypes/Book.js
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@ -3,6 +3,7 @@ const Logger = require('../../Logger')
const BookMetadata = require('../metadata/BookMetadata')
const { areEquivalent, copyValue } = require('../../utils/index')
const { parseOpfMetadataXML } = require('../../utils/parsers/parseOpfMetadata')
const { getOverdriveMediaMarkersFromFiles, parseOverdriveMediaMarkers } = require('../../utils/parsers/parseOverdriveMediaMarkers')
const abmetadataGenerator = require('../../utils/abmetadataGenerator')
const { readTextFile } = require('../../utils/fileUtils')
const AudioFile = require('../files/AudioFile')
@ -398,116 +399,17 @@ class Book {
return wasUpdated
}
generateChaptersFromOverdriveMediaMarkers(overdriveMediaMarkers, includedAudioFiles) {
var parseString = require('xml2js').parseString; // function to convert xml to JSON
var parsedOverdriveMediaMarkers = [] // an array of objects. each object being a chapter with a name and time key. the values are arrays of strings
overdriveMediaMarkers.forEach(function (item, index) {
var parsed_result
parseString(item, function (err, result) {
// result.Markers.Marker is the result of parsing the XML for the MediaMarker tags for the MP3 file (Part##.mp3)
// it is shaped like this:
// [
// {
// "Name": [
// "Chapter 1: "
// ],
// "Time": [
// "0:00.000"
// ]
// },
// {
// "Name": [
// "Chapter 2: "
// ],
// "Time": [
// "15:51.000"
// ]
// }
// ]
parsed_result = result.Markers.Marker
// The values for Name and Time in parsed_results are returned as Arrays from parseString
// update them to be strings
parsed_result.forEach((item, index) => {
Object.keys(item).forEach(key => {
item[key] = item[key].toString()
})
})
})
parsedOverdriveMediaMarkers.push(parsed_result)
})
// go from an array of arrays of objects to an array of objects
// end result looks like:
// [
// {
// "Name": "Chapter 1: The Worst Birthday",
// "Time": "0:00.000"
// },
// {
// "Name": "Chapter 2: Dobby's Warning",
// "Time": "15:51.000"
// },
// { redacted }
// ]
parsedOverdriveMediaMarkers = parsedOverdriveMediaMarkers
var index = 0
var time = 0.0
// actually generate the chapter object
// logic ported over from benonymity's OverdriveChapterizer:
// https://github.com/benonymity/OverdriveChapterizer/blob/main/chapters.py
var length = 0.0
var newOChapters = []
const weirdChapterFilterRegex = /([(]\d|[cC]ontinued)/
includedAudioFiles.forEach((track, track_index) => {
parsedOverdriveMediaMarkers[track_index].forEach((chapter) => {
Logger.debug(`[Book] Attempting regex check for ${chapter.Name}!`)
if (weirdChapterFilterRegex.test(chapter.Name)) {
Logger.debug(`[Book] That shit weird yo`)
return
}
time = chapter.Time.split(":")
time = length + parseFloat(time[0]) * 60 + parseFloat(time[1])
newOChapters.push(
{
id: index++,
start: time,
end: length,
title: chapter.Name
}
)
})
length += track.duration
})
Logger.debug(`[Book] newOChapters: ${JSON.stringify(newOChapters)}`)
return newOChapters
}
getOverdriveMediaMarkers(audioFiles) {
var markers = audioFiles.map((af) => af.metaTags.tagOverdriveMediaMarker).filter(notUndefined => notUndefined !== undefined).filter(elem => { return elem !== null }) || []
return markers
}
setChapters(preferOverdriveMediaMarker = false) {
// If 1 audio file without chapters, then no chapters will be set
var includedAudioFiles = this.audioFiles.filter(af => !af.exclude)
var overdriveMediaMarkers = this.getOverdriveMediaMarkers(includedAudioFiles)
var overdriveMediaMarkers = getOverdriveMediaMarkersFromFiles(includedAudioFiles)
// If preferOverdriveMediaMarker is set, try and use that first
// fallback to non-overdrive chapters if there are no Overdrive Media Markers available
if (preferOverdriveMediaMarker && (overdriveMediaMarkers.length > 0)) {
Logger.debug(`[Book] preferring overdrive media markers! Lets generate em.`)
this.chapters = this.generateChaptersFromOverdriveMediaMarkers(overdriveMediaMarkers, includedAudioFiles)
this.chapters = parseOverdriveMediaMarkers(overdriveMediaMarkers, includedAudioFiles)
} else {
if (includedAudioFiles.length === 1) {
// 1 audio file with chapters

101
server/utils/parsers/parseOverdriveMediaMarkers.js Normal file
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@ -0,0 +1,101 @@
const Logger = require('../../Logger')
// given an array of audioFiles, return an array of unparsed MediaMarkers
module.exports.getOverdriveMediaMarkersFromFiles = (audioFiles) => {
var markers = audioFiles.map((af) => af.metaTags.tagOverdriveMediaMarker).filter(notUndefined => notUndefined !== undefined).filter(elem => { return elem !== null }) || []
return markers
}
module.exports.parseOverdriveMediaMarkers = (overdriveMediaMarkers, includedAudioFiles) => {
var parseString = require('xml2js').parseString; // function to convert xml to JSON
var parsedOverdriveMediaMarkers = [] // an array of objects. each object being a chapter with a name and time key. the values are arrays of strings
overdriveMediaMarkers.forEach(function (item, index) {
var parsed_result
parseString(item, function (err, result) {
// result.Markers.Marker is the result of parsing the XML for the MediaMarker tags for the MP3 file (Part##.mp3)
// it is shaped like this:
// [
// {
// "Name": [
// "Chapter 1: "
// ],
// "Time": [
// "0:00.000"
// ]
// },
// {
// "Name": [
// "Chapter 2: "
// ],
// "Time": [
// "15:51.000"
// ]
// }
// ]
parsed_result = result.Markers.Marker
// The values for Name and Time in parsed_results are returned as Arrays from parseString
// update them to be strings
parsed_result.forEach((item, index) => {
Object.keys(item).forEach(key => {
item[key] = item[key].toString()
})
})
})
parsedOverdriveMediaMarkers.push(parsed_result)
})
// go from an array of arrays of objects to an array of objects
// end result looks like:
// [
// {
// "Name": "Chapter 1: The Worst Birthday",
// "Time": "0:00.000"
// },
// {
// "Name": "Chapter 2: Dobby's Warning",
// "Time": "15:51.000"
// },
// { redacted }
// ]
parsedOverdriveMediaMarkers = parsedOverdriveMediaMarkers
var index = 0
var time = 0.0
// actually generate the chapter object
// logic ported over from benonymity's OverdriveChapterizer:
// https://github.com/benonymity/OverdriveChapterizer/blob/main/chapters.py
var length = 0.0
var newOChapters = []
const weirdChapterFilterRegex = /([(]\d|[cC]ontinued)/
includedAudioFiles.forEach((track, track_index) => {
parsedOverdriveMediaMarkers[track_index].forEach((chapter) => {
Logger.debug(`[parseOverdriveMediaMarkers] Attempting regex check for ${chapter.Name}!`)
if (weirdChapterFilterRegex.test(chapter.Name)) {
Logger.debug(`[parseOverdriveMediaMarkers] That shit weird yo`)
return
}
time = chapter.Time.split(":")
time = length + parseFloat(time[0]) * 60 + parseFloat(time[1])
newOChapters.push(
{
id: index++,
start: time,
end: length,
title: chapter.Name
}
)
})
length += track.duration
})
Logger.debug(`[parseOverdriveMediaMarkers] newOChapters: ${JSON.stringify(newOChapters)}`)
return newOChapters
}