mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2024-11-08 00:54:33 +01:00
342 lines
13 KiB
JavaScript
342 lines
13 KiB
JavaScript
const Path = require('path')
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const AudioFile = require('../objects/files/AudioFile')
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const VideoFile = require('../objects/files/VideoFile')
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const prober = require('../utils/prober')
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const Logger = require('../Logger')
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const { LogLevel } = require('../utils/constants')
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class MediaFileScanner {
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constructor() { }
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/**
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* Get track and disc number from audio filename
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* @param {{title:string, subtitle:string, series:string, sequence:string, publishedYear:string, narrators:string}} mediaMetadataFromScan
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* @param {import('../objects/files/LibraryFile')} audioLibraryFile
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* @returns {{trackNumber:number, discNumber:number}}
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*/
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getTrackAndDiscNumberFromFilename(mediaMetadataFromScan, audioLibraryFile) {
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const { title, author, series, publishedYear } = mediaMetadataFromScan
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const { filename, path } = audioLibraryFile.metadata
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let partbasename = Path.basename(filename, Path.extname(filename))
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// Remove title, author, series, and publishedYear from filename if there
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if (title) partbasename = partbasename.replace(title, '')
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if (author) partbasename = partbasename.replace(author, '')
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if (series) partbasename = partbasename.replace(series, '')
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if (publishedYear) partbasename = partbasename.replace(publishedYear)
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// Look for disc number
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let discNumber = null
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const discMatch = partbasename.match(/\b(disc|cd) ?(\d\d?)\b/i)
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if (discMatch && discMatch.length > 2 && discMatch[2]) {
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if (!isNaN(discMatch[2])) {
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discNumber = Number(discMatch[2])
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}
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// Remove disc number from filename
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partbasename = partbasename.replace(/\b(disc|cd) ?(\d\d?)\b/i, '')
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}
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// Look for disc number in folder path e.g. /Book Title/CD01/audiofile.mp3
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const pathdir = Path.dirname(path).split('/').pop()
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if (pathdir && /^cd\d{1,3}$/i.test(pathdir)) {
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const discFromFolder = Number(pathdir.replace(/cd/i, ''))
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if (!isNaN(discFromFolder) && discFromFolder !== null) discNumber = discFromFolder
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}
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const numbersinpath = partbasename.match(/\d{1,4}/g)
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const trackNumber = numbersinpath && numbersinpath.length ? parseInt(numbersinpath[0]) : null
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return {
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trackNumber,
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discNumber
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}
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}
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getAverageScanDurationMs(results) {
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if (!results.length) return 0
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let total = 0
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for (let i = 0; i < results.length; i++) total += results[i].elapsed
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return Math.floor(total / results.length)
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}
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async scan(mediaType, libraryFile, mediaMetadataFromScan, verbose = false) {
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const probeStart = Date.now()
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const probeData = await prober.probe(libraryFile.metadata.path, verbose)
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if (probeData.error) {
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Logger.error(`[MediaFileScanner] ${probeData.error} : "${libraryFile.metadata.path}"`)
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return null
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}
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if (mediaType === 'video') {
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if (!probeData.videoStream) {
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Logger.error('[MediaFileScanner] Invalid video file no video stream')
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return null
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}
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const videoFile = new VideoFile()
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videoFile.setDataFromProbe(libraryFile, probeData)
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return {
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videoFile,
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elapsed: Date.now() - probeStart
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}
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} else {
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if (!probeData.audioStream) {
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Logger.error('[MediaFileScanner] Invalid audio file no audio stream')
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return null
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}
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const audioFile = new AudioFile()
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audioFile.trackNumFromMeta = probeData.audioMetaTags.trackNumber
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audioFile.discNumFromMeta = probeData.audioMetaTags.discNumber
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if (mediaType === 'book') {
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const { trackNumber, discNumber } = this.getTrackAndDiscNumberFromFilename(mediaMetadataFromScan, libraryFile)
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audioFile.trackNumFromFilename = trackNumber
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audioFile.discNumFromFilename = discNumber
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}
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audioFile.setDataFromProbe(libraryFile, probeData)
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return {
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audioFile,
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elapsed: Date.now() - probeStart
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}
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}
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}
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/**
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* Returns array of { MediaFile, elapsed, averageScanDuration } from audio file scan objects
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* @param {import('../objects/LibraryItem')} libraryItem
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* @param {import('../objects/files/LibraryFile')[]} mediaLibraryFiles
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* @returns {Promise<object>}
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*/
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async executeMediaFileScans(libraryItem, mediaLibraryFiles) {
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const mediaType = libraryItem.mediaType
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const scanStart = Date.now()
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const mediaMetadata = libraryItem.media.metadata || null
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const batchSize = 32
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const results = []
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for (let batch = 0; batch < mediaLibraryFiles.length; batch += batchSize) {
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const proms = []
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for (let i = batch; i < Math.min(batch + batchSize, mediaLibraryFiles.length); i++) {
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proms.push(this.scan(mediaType, mediaLibraryFiles[i], mediaMetadata))
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}
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results.push(...await Promise.all(proms).then((scanResults) => scanResults.filter(sr => sr)))
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}
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return {
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audioFiles: results.filter(r => r.audioFile).map(r => r.audioFile),
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videoFiles: results.filter(r => r.videoFile).map(r => r.videoFile),
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elapsed: Date.now() - scanStart,
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averageScanDuration: this.getAverageScanDurationMs(results)
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}
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}
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isSequential(nums) {
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if (!nums || !nums.length) return false
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if (nums.length === 1) return true
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let prev = nums[0]
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for (let i = 1; i < nums.length; i++) {
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if (nums[i] - prev > 1) return false
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prev = nums[i]
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}
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return true
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}
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removeDupes(nums) {
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if (!nums || !nums.length) return []
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if (nums.length === 1) return nums
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var nodupes = [nums[0]]
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nums.forEach((num) => {
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if (num > nodupes[nodupes.length - 1]) nodupes.push(num)
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})
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return nodupes
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}
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runSmartTrackOrder(libraryItem, audioFiles) {
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var discsFromFilename = []
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var tracksFromFilename = []
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var discsFromMeta = []
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var tracksFromMeta = []
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audioFiles.forEach((af) => {
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if (af.discNumFromFilename !== null) discsFromFilename.push(af.discNumFromFilename)
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if (af.discNumFromMeta !== null) discsFromMeta.push(af.discNumFromMeta)
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if (af.trackNumFromFilename !== null) tracksFromFilename.push(af.trackNumFromFilename)
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if (af.trackNumFromMeta !== null) tracksFromMeta.push(af.trackNumFromMeta)
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})
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discsFromFilename.sort((a, b) => a - b)
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discsFromMeta.sort((a, b) => a - b)
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tracksFromFilename.sort((a, b) => a - b)
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tracksFromMeta.sort((a, b) => a - b)
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var discKey = null
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if (discsFromMeta.length === audioFiles.length && this.isSequential(discsFromMeta)) {
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discKey = 'discNumFromMeta'
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} else if (discsFromFilename.length === audioFiles.length && this.isSequential(discsFromFilename)) {
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discKey = 'discNumFromFilename'
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}
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var trackKey = null
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tracksFromFilename = this.removeDupes(tracksFromFilename)
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tracksFromMeta = this.removeDupes(tracksFromMeta)
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if (tracksFromFilename.length > tracksFromMeta.length) {
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trackKey = 'trackNumFromFilename'
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} else {
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trackKey = 'trackNumFromMeta'
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}
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if (discKey !== null) {
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Logger.debug(`[MediaFileScanner] Smart track order for "${libraryItem.media.metadata.title}" using disc key ${discKey} and track key ${trackKey}`)
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audioFiles.sort((a, b) => {
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let Dx = a[discKey] - b[discKey]
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if (Dx === 0) Dx = a[trackKey] - b[trackKey]
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return Dx
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})
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} else {
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Logger.debug(`[MediaFileScanner] Smart track order for "${libraryItem.media.metadata.title}" using track key ${trackKey}`)
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audioFiles.sort((a, b) => a[trackKey] - b[trackKey])
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}
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for (let i = 0; i < audioFiles.length; i++) {
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audioFiles[i].index = i + 1
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var existingAF = libraryItem.media.findFileWithInode(audioFiles[i].ino)
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if (existingAF) {
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if (existingAF.updateFromScan) existingAF.updateFromScan(audioFiles[i])
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} else {
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libraryItem.media.addAudioFile(audioFiles[i])
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}
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}
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}
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/**
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* Scans media files for a library item and adds them as audio tracks and sets library item metadata
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* @param {import('../objects/files/LibraryFile')[]} mediaLibraryFiles
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* @param {import('../objects/LibraryItem')} libraryItem
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* @param {import('./LibraryScan')} [libraryScan=null] - Optional when doing a library scan to use LibraryScan config/logs
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* @return {Promise<boolean>} True if any updates were made
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*/
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async scanMediaFiles(mediaLibraryFiles, libraryItem, libraryScan = null) {
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const preferAudioMetadata = libraryScan ? !!libraryScan.preferAudioMetadata : !!global.ServerSettings.scannerPreferAudioMetadata
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let hasUpdated = false
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const mediaScanResult = await this.executeMediaFileScans(libraryItem, mediaLibraryFiles)
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if (libraryItem.mediaType === 'video') {
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if (mediaScanResult.videoFiles.length) {
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// TODO: Check for updates etc
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hasUpdated = true
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libraryItem.media.setVideoFile(mediaScanResult.videoFiles[0])
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}
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} else if (mediaScanResult.audioFiles.length) {
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if (libraryScan) {
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libraryScan.addLog(LogLevel.DEBUG, `Library Item "${libraryItem.path}" Media file scan took ${mediaScanResult.elapsed}ms for ${mediaScanResult.audioFiles.length} with average time of ${mediaScanResult.averageScanDuration}ms per MB`)
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}
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Logger.debug(`Library Item "${libraryItem.path}" Media file scan took ${mediaScanResult.elapsed}ms with ${mediaScanResult.audioFiles.length} audio files averaging ${mediaScanResult.averageScanDuration}ms per MB`)
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const newAudioFiles = mediaScanResult.audioFiles.filter(af => {
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return !libraryItem.media.findFileWithInode(af.ino)
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})
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// Book: Adding audio files to book media
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if (libraryItem.mediaType === 'book') {
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const mediaScanFileInodes = mediaScanResult.audioFiles.map(af => af.ino)
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// Filter for existing valid track audio files not included in the audio files scanned
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const existingAudioFiles = libraryItem.media.audioFiles.filter(af => af.isValidTrack && !mediaScanFileInodes.includes(af.ino))
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if (newAudioFiles.length) {
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// Single Track Audiobooks
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if (mediaScanFileInodes.length + existingAudioFiles.length === 1) {
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const af = mediaScanResult.audioFiles[0]
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af.index = 1
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libraryItem.media.addAudioFile(af)
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hasUpdated = true
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} else {
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const allAudioFiles = existingAudioFiles.concat(mediaScanResult.audioFiles)
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this.runSmartTrackOrder(libraryItem, allAudioFiles)
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hasUpdated = true
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}
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} else {
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// Only update metadata not index
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mediaScanResult.audioFiles.forEach((af) => {
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const existingAF = libraryItem.media.findFileWithInode(af.ino)
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if (existingAF) {
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af.index = existingAF.index
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if (existingAF.updateFromScan && existingAF.updateFromScan(af)) {
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hasUpdated = true
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}
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}
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})
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}
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// Set book details from audio file ID3 tags, optional prefer
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if (libraryItem.media.setMetadataFromAudioFile(preferAudioMetadata)) {
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hasUpdated = true
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}
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if (hasUpdated) {
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libraryItem.media.rebuildTracks()
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}
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} else if (libraryItem.mediaType === 'podcast') { // Podcast Media Type
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const existingAudioFiles = mediaScanResult.audioFiles.filter(af => libraryItem.media.findFileWithInode(af.ino))
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if (newAudioFiles.length) {
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let newIndex = Math.max(...libraryItem.media.episodes.filter(ep => ep.index == null || isNaN(ep.index)).map(ep => Number(ep.index))) + 1
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newAudioFiles.forEach((newAudioFile) => {
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libraryItem.media.addNewEpisodeFromAudioFile(newAudioFile, newIndex++)
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})
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hasUpdated = true
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}
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// Update audio file metadata for audio files already there
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existingAudioFiles.forEach((af) => {
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const podcastEpisode = libraryItem.media.findEpisodeWithInode(af.ino)
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af.index = 1
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if (podcastEpisode?.audioFile.updateFromScan(af)) {
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hasUpdated = true
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podcastEpisode.setDataFromAudioMetaTags(podcastEpisode.audioFile.metaTags, false)
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}
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})
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if (libraryItem.media.setMetadataFromAudioFile(preferAudioMetadata)) {
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hasUpdated = true
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}
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} else if (libraryItem.mediaType === 'music') { // Music
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// Only one audio file in library item
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if (newAudioFiles.length) { // New audio file
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libraryItem.media.setAudioFile(newAudioFiles[0])
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hasUpdated = true
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} else if (libraryItem.media.audioFile && libraryItem.media.audioFile.updateFromScan(mediaScanResult.audioFiles[0])) {
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hasUpdated = true
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console.log('Updated from scan')
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}
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if (libraryItem.media.setMetadataFromAudioFile()) {
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hasUpdated = true
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}
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// If the audio track has no title meta tag then use the audio file name
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if (!libraryItem.media.metadata.title && libraryItem.media.audioFile) {
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const audioFileName = libraryItem.media.audioFile.metadata.filename
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libraryItem.media.metadata.title = Path.basename(audioFileName, Path.extname(audioFileName))
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hasUpdated = true
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}
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}
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}
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return hasUpdated
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}
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probeAudioFile(audioFile) {
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Logger.debug(`[MediaFileScanner] Running ffprobe for audio file at "${audioFile.metadata.path}"`)
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return prober.rawProbe(audioFile.metadata.path)
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}
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}
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module.exports = new MediaFileScanner() |