mirror of
https://github.com/advplyr/audiobookshelf.git
synced 2026-02-28 21:19:42 +00:00
Merge 55f75d2b31 into 1d0b7e383a
This commit is contained in:
Jesse Hallam
GitHub
commit
a53faa1803
2 changed files with 278 additions and 17 deletions
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@ -47,28 +47,72 @@ async function writeConcatFile(tracks, outputPath, startTime = 0) {
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}
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module.exports.writeConcatFile = writeConcatFile
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async function extractCoverArt(filepath, outputpath) {
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/**
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* Extracts cover art from an audio file
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* @param {string} filepath - Path to the input audio file
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* @param {string} outputpath - Path to save the extracted cover art
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* @param {import('../libs/fluentFfmpeg/index')} ffmpegModule - The Ffmpeg module to use (optional). Used for dependency injection in tests.
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* @returns {Promise<string|false>} - The output path if successful, false otherwise
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*/
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async function extractCoverArt(filepath, outputpath, ffmpegModule = Ffmpeg) {
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var dirname = Path.dirname(outputpath)
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await fs.ensureDir(dirname)
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return new Promise((resolve) => {
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/** @type {import('../libs/fluentFfmpeg/index').FfmpegCommand} */
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var ffmpeg = Ffmpeg(filepath)
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ffmpeg.addOption(['-map 0:v:0', '-frames:v 1'])
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ffmpeg.output(outputpath)
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// First, probe the file to find all video streams and select the largest one
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ffmpegModule.ffprobe(filepath, (err, metadata) => {
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if (err) {
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Logger.error(`[FfmpegHelpers] ffprobe error: ${err}`)
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resolve(false)
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return
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}
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ffmpeg.on('start', (cmd) => {
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Logger.debug(`[FfmpegHelpers] Extract Cover Cmd: ${cmd}`)
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// Find all video streams and filter out tiny placeholder images (width or height <= 1)
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const videoStreams = metadata.streams.filter(stream => {
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if (stream.codec_type !== 'video') return false
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const width = stream.width || 0
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const height = stream.height || 0
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return width > 1 && height > 1
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})
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if (!videoStreams || videoStreams.length === 0) {
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Logger.error(`[FfmpegHelpers] No usable video streams found in ${filepath}`)
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resolve(false)
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return
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}
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// Select the video stream with the largest resolution (width * height)
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let largestStream = videoStreams[0]
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let maxResolution = (largestStream.width || 0) * (largestStream.height || 0)
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for (const stream of videoStreams) {
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const resolution = (stream.width || 0) * (stream.height || 0)
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if (resolution > maxResolution) {
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maxResolution = resolution
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largestStream = stream
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}
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}
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Logger.debug(`[FfmpegHelpers] Selected video stream ${largestStream.index} with resolution ${largestStream.width}x${largestStream.height}`)
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/** @type {import('../libs/fluentFfmpeg/index').FfmpegCommand} */
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var ffmpeg = ffmpegModule(filepath)
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ffmpeg.addOption([`-map 0:${largestStream.index}`, '-frames:v 1'])
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ffmpeg.output(outputpath)
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ffmpeg.on('start', (cmd) => {
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Logger.debug(`[FfmpegHelpers] Extract Cover Cmd: ${cmd}`)
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})
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ffmpeg.on('error', (err, stdout, stderr) => {
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Logger.error(`[FfmpegHelpers] Extract Cover Error ${err}`)
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resolve(false)
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})
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ffmpeg.on('end', () => {
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Logger.debug(`[FfmpegHelpers] Cover Art Extracted Successfully`)
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resolve(outputpath)
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})
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ffmpeg.run()
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})
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ffmpeg.on('error', (err, stdout, stderr) => {
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Logger.error(`[FfmpegHelpers] Extract Cover Error ${err}`)
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resolve(false)
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})
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ffmpeg.on('end', () => {
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Logger.debug(`[FfmpegHelpers] Cover Art Extracted Successfully`)
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resolve(outputpath)
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})
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ffmpeg.run()
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})
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}
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module.exports.extractCoverArt = extractCoverArt
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@ -4,7 +4,7 @@ const fileUtils = require('../../../server/utils/fileUtils')
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const fs = require('../../../server/libs/fsExtra')
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const EventEmitter = require('events')
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const { generateFFMetadata, addCoverAndMetadataToFile } = require('../../../server/utils/ffmpegHelpers')
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const { generateFFMetadata, addCoverAndMetadataToFile, extractCoverArt } = require('../../../server/utils/ffmpegHelpers')
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global.isWin = process.platform === 'win32'
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@ -247,3 +247,220 @@ describe('addCoverAndMetadataToFile', () => {
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sinon.restore()
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})
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})
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describe('extractCoverArt', () => {
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function createTestSetup() {
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const filepath = '/path/to/audio/file.m4b'
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const outputpath = '/path/to/output/cover.jpg'
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const ffmpegCommandStub = new EventEmitter()
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ffmpegCommandStub.addOption = sinon.stub().returnsThis()
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ffmpegCommandStub.output = sinon.stub().returnsThis()
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ffmpegCommandStub.run = sinon.stub().callsFake(() => {
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ffmpegCommandStub.emit('end')
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})
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const ffmpegModuleStub = sinon.stub().returns(ffmpegCommandStub)
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ffmpegModuleStub.ffprobe = sinon.stub()
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const ensureDirStub = sinon.stub(fs, 'ensureDir').resolves()
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return { filepath, outputpath, ffmpegCommandStub, ffmpegModuleStub, ensureDirStub }
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}
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let filepath = null
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let outputpath = null
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let ffmpegCommandStub = null
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let ffmpegModuleStub = null
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let ensureDirStub = null
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beforeEach(() => {
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const input = createTestSetup()
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filepath = input.filepath
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outputpath = input.outputpath
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ffmpegCommandStub = input.ffmpegCommandStub
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ffmpegModuleStub = input.ffmpegModuleStub
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ensureDirStub = input.ensureDirStub
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})
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afterEach(() => {
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sinon.restore()
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})
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it('should extract cover art from a file with a single video stream', async () => {
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// Arrange
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const metadata = {
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streams: [
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{ codec_type: 'audio', index: 0 },
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{ codec_type: 'video', index: 1, width: 400, height: 400 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegModuleStub.ffprobe.calledOnce).to.be.true
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expect(ffmpegModuleStub.ffprobe.firstCall.args[0]).to.equal(filepath)
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expect(ffmpegCommandStub.addOption.calledOnce).to.be.true
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expect(ffmpegCommandStub.addOption.firstCall.args[0]).to.deep.equal(['-map 0:1', '-frames:v 1'])
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expect(ffmpegCommandStub.output.calledOnce).to.be.true
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expect(ffmpegCommandStub.output.firstCall.args[0]).to.equal(outputpath)
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expect(ffmpegCommandStub.run.calledOnce).to.be.true
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expect(result).to.equal(outputpath)
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})
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it('should select the largest video stream when multiple exist and ignore 1x1 placeholder', async () => {
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// Arrange - simulate the Christmas Carol case with 1x1 and 400x400 streams
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const metadata = {
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streams: [
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{ codec_type: 'audio', index: 0 },
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{ codec_type: 'video', index: 1, width: 1, height: 1 },
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{ codec_type: 'audio', index: 2 },
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{ codec_type: 'video', index: 3, width: 400, height: 400 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegModuleStub.ffprobe.calledOnce).to.be.true
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expect(ffmpegCommandStub.addOption.calledOnce).to.be.true
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// Should select index 3 (400x400) and ignore index 1 (1x1)
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expect(ffmpegCommandStub.addOption.firstCall.args[0]).to.deep.equal(['-map 0:3', '-frames:v 1'])
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expect(result).to.equal(outputpath)
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})
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it('should select the largest video stream among multiple sizes', async () => {
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// Arrange - test with various resolutions
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const metadata = {
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streams: [
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{ codec_type: 'video', index: 0, width: 100, height: 100 }, // 10,000 pixels
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{ codec_type: 'video', index: 1, width: 200, height: 150 }, // 30,000 pixels
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{ codec_type: 'video', index: 2, width: 300, height: 200 }, // 60,000 pixels (largest)
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{ codec_type: 'video', index: 3, width: 150, height: 300 } // 45,000 pixels
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegCommandStub.addOption.firstCall.args[0]).to.deep.equal(['-map 0:2', '-frames:v 1'])
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expect(result).to.equal(outputpath)
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})
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it('should ignore video streams with missing width/height and select valid ones', async () => {
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// Arrange
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const metadata = {
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streams: [
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{ codec_type: 'video', index: 0 }, // no dimensions (will be filtered out)
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{ codec_type: 'video', index: 1, width: 400, height: 400 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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// Should ignore index 0 (no dimensions) and select index 1 (400x400)
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expect(ffmpegCommandStub.addOption.firstCall.args[0]).to.deep.equal(['-map 0:1', '-frames:v 1'])
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expect(result).to.equal(outputpath)
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})
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it('should return false when ffprobe fails', async () => {
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// Arrange
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ffmpegModuleStub.ffprobe.yields(new Error('ffprobe error'), null)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegModuleStub.ffprobe.calledOnce).to.be.true
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expect(ffmpegCommandStub.run.called).to.be.false
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expect(result).to.be.false
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})
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it('should return false when no video streams found', async () => {
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// Arrange
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const metadata = {
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streams: [
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{ codec_type: 'audio', index: 0 },
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{ codec_type: 'audio', index: 1 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegModuleStub.ffprobe.calledOnce).to.be.true
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expect(ffmpegCommandStub.run.called).to.be.false
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expect(result).to.be.false
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})
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it('should return false when only tiny placeholder images exist (width or height <= 1)', async () => {
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// Arrange
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const metadata = {
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streams: [
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{ codec_type: 'audio', index: 0 },
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{ codec_type: 'video', index: 1, width: 1, height: 1 },
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{ codec_type: 'video', index: 2, width: 0, height: 100 },
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{ codec_type: 'video', index: 3, width: 100, height: 1 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegModuleStub.ffprobe.calledOnce).to.be.true
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expect(ffmpegCommandStub.run.called).to.be.false
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expect(result).to.be.false
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})
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it('should return false when ffmpeg extraction fails', async () => {
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// Arrange
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const metadata = {
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streams: [
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{ codec_type: 'video', index: 0, width: 400, height: 400 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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ffmpegCommandStub.run = sinon.stub().callsFake(() => {
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ffmpegCommandStub.emit('error', new Error('FFmpeg extraction error'))
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})
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// Act
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const result = await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ffmpegModuleStub.ffprobe.calledOnce).to.be.true
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expect(ffmpegCommandStub.run.calledOnce).to.be.true
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expect(result).to.be.false
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})
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it('should ensure output directory exists', async () => {
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// Arrange
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const metadata = {
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streams: [
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{ codec_type: 'video', index: 0, width: 400, height: 400 }
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]
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}
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ffmpegModuleStub.ffprobe.yields(null, metadata)
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// Act
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await extractCoverArt(filepath, outputpath, ffmpegModuleStub)
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// Assert
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expect(ensureDirStub.calledOnce).to.be.true
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expect(ensureDirStub.firstCall.args[0]).to.equal('/path/to/output')
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})
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})
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