108 lines
3.2 KiB
JavaScript
108 lines
3.2 KiB
JavaScript
const AudioFileMetadata = require('../objects/metadata/AudioMetaTags')
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class MediaProbeData {
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constructor(probeData) {
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this.embeddedCoverArt = null
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this.format = null
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this.duration = null
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this.size = null
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this.audioStream = null
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this.videoStream = null
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this.bitRate = null
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this.codec = null
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this.timeBase = null
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this.language = null
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this.channelLayout = null
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this.channels = null
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this.sampleRate = null
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this.chapters = []
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this.audioFileMetadata = null
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this.trackNumber = null
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this.trackTotal = null
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this.discNumber = null
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this.discTotal = null
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if (probeData) {
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this.construct(probeData)
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}
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}
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construct(probeData) {
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for (const key in probeData) {
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if (key === 'audioFileMetadata' && probeData[key]) {
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this[key] = new AudioFileMetadata(probeData[key])
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} else if (this[key] !== undefined) {
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this[key] = probeData[key]
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}
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}
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}
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getEmbeddedCoverArt(videoStream) {
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const ImageCodecs = ['mjpeg', 'jpeg', 'png']
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return ImageCodecs.includes(videoStream.codec) ? videoStream.codec : null
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}
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setData(data) {
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var audioStream = data.audio_stream
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this.embeddedCoverArt = data.video_stream ? this.getEmbeddedCoverArt(data.video_stream) : null
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this.format = data.format
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this.duration = data.duration
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this.size = data.size
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this.audioStream = audioStream
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this.videoStream = this.embeddedCoverArt ? null : data.video_stream || null
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this.bitRate = audioStream.bit_rate || data.bit_rate
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this.codec = audioStream.codec
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this.timeBase = audioStream.time_base
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this.language = audioStream.language
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this.channelLayout = audioStream.channel_layout
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this.channels = audioStream.channels
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this.sampleRate = audioStream.sample_rate
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this.chapters = data.chapters || []
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if (data.tags) { // New for tone library data (toneProber.js)
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this.audioFileMetadata = new AudioFileMetadata()
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this.audioFileMetadata.setDataFromTone(data.tags)
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} else { // Data from ffprobe (prober.js)
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var metatags = {}
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for (const key in data) {
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if (data[key] && key.startsWith('file_tag')) {
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metatags[key] = data[key]
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}
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}
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this.audioFileMetadata = new AudioFileMetadata()
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this.audioFileMetadata.setData(metatags)
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}
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// Track ID3 tag might be "3/10" or just "3"
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if (this.audioFileMetadata.tagTrack) {
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var trackParts = this.audioFileMetadata.tagTrack.split('/').map(part => Number(part))
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if (trackParts.length > 0) {
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// Fractional track numbers not supported
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this.trackNumber = !isNaN(trackParts[0]) ? Math.trunc(trackParts[0]) : null
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}
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if (trackParts.length > 1) {
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this.trackTotal = !isNaN(trackParts[1]) ? trackParts[1] : null
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}
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}
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// Parse disc tag
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if (this.audioFileMetadata.tagDisc) {
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var discParts = this.audioFileMetadata.tagDisc.split('/').map(p => Number(p))
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if (discParts.length > 0) {
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this.discNumber = !isNaN(discParts[0]) ? Math.trunc(discParts[0]) : null
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}
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if (discParts.length > 1) {
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this.discTotal = !isNaN(discParts[1]) ? discParts[1] : null
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}
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}
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}
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}
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module.exports = MediaProbeData |