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4c280004 | 1 | import { close, ensureDir, move, open, outputJSON, pathExists, read, readFile, remove, writeFile } from 'fs-extra' |
daf6e480 C |
2 | import { flatten, uniq } from 'lodash' |
3 | import { basename, dirname, join } from 'path' | |
4 | import { MVideoWithFile } from '@server/types/models' | |
09209296 | 5 | import { sha256 } from '../helpers/core-utils' |
daf6e480 | 6 | import { getAudioStreamCodec, getVideoStreamCodec, getVideoStreamSize } from '../helpers/ffprobe-utils' |
09209296 | 7 | import { logger } from '../helpers/logger' |
4c280004 C |
8 | import { doRequest, doRequestAndSaveToFile } from '../helpers/requests' |
9 | import { generateRandomString } from '../helpers/utils' | |
6dd9de95 | 10 | import { CONFIG } from '../initializers/config' |
daf6e480 | 11 | import { HLS_STREAMING_PLAYLIST_DIRECTORY, P2P_MEDIA_LOADER_PEER_VERSION } from '../initializers/constants' |
74dc3bca | 12 | import { sequelizeTypescript } from '../initializers/database' |
daf6e480 C |
13 | import { VideoFileModel } from '../models/video/video-file' |
14 | import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist' | |
90a8bd30 | 15 | import { getVideoFilePath } from './video-paths' |
ae9bbed4 C |
16 | |
17 | async function updateStreamingPlaylistsInfohashesIfNeeded () { | |
18 | const playlistsToUpdate = await VideoStreamingPlaylistModel.listByIncorrectPeerVersion() | |
19 | ||
20 | // Use separate SQL queries, because we could have many videos to update | |
21 | for (const playlist of playlistsToUpdate) { | |
22 | await sequelizeTypescript.transaction(async t => { | |
23 | const videoFiles = await VideoFileModel.listByStreamingPlaylist(playlist.id, t) | |
24 | ||
594d0c6a | 25 | playlist.p2pMediaLoaderInfohashes = VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(playlist.playlistUrl, videoFiles) |
0e9c48c2 | 26 | playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION |
ae9bbed4 C |
27 | await playlist.save({ transaction: t }) |
28 | }) | |
29 | } | |
30 | } | |
09209296 | 31 | |
453e83ea | 32 | async function updateMasterHLSPlaylist (video: MVideoWithFile) { |
9c6ca37f | 33 | const directory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid) |
09209296 C |
34 | const masterPlaylists: string[] = [ '#EXTM3U', '#EXT-X-VERSION:3' ] |
35 | const masterPlaylistPath = join(directory, VideoStreamingPlaylistModel.getMasterHlsPlaylistFilename()) | |
d7a25329 | 36 | const streamingPlaylist = video.getHLSPlaylist() |
09209296 | 37 | |
d7a25329 | 38 | for (const file of streamingPlaylist.VideoFiles) { |
09209296 C |
39 | // If we did not generated a playlist for this resolution, skip |
40 | const filePlaylistPath = join(directory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution)) | |
41 | if (await pathExists(filePlaylistPath) === false) continue | |
42 | ||
d7a25329 | 43 | const videoFilePath = getVideoFilePath(streamingPlaylist, file) |
09209296 | 44 | |
52201311 | 45 | const size = await getVideoStreamSize(videoFilePath) |
09209296 C |
46 | |
47 | const bandwidth = 'BANDWIDTH=' + video.getBandwidthBits(file) | |
48 | const resolution = `RESOLUTION=${size.width}x${size.height}` | |
49 | ||
50 | let line = `#EXT-X-STREAM-INF:${bandwidth},${resolution}` | |
51 | if (file.fps) line += ',FRAME-RATE=' + file.fps | |
52 | ||
66f77f63 | 53 | const codecs = await Promise.all([ |
54 | getVideoStreamCodec(videoFilePath), | |
55 | getAudioStreamCodec(videoFilePath) | |
56 | ]) | |
d7b1c7b4 | 57 | |
66f77f63 | 58 | line += `,CODECS="${codecs.filter(c => !!c).join(',')}"` |
52201311 | 59 | |
09209296 C |
60 | masterPlaylists.push(line) |
61 | masterPlaylists.push(VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution)) | |
62 | } | |
63 | ||
64 | await writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n') | |
65 | } | |
66 | ||
c6c0fa6c | 67 | async function updateSha256VODSegments (video: MVideoWithFile) { |
4c280004 C |
68 | const json: { [filename: string]: { [range: string]: string } } = {} |
69 | ||
9c6ca37f | 70 | const playlistDirectory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid) |
d7a25329 | 71 | const hlsPlaylist = video.getHLSPlaylist() |
4c280004 C |
72 | |
73 | // For all the resolutions available for this video | |
d7a25329 | 74 | for (const file of hlsPlaylist.VideoFiles) { |
4c280004 C |
75 | const rangeHashes: { [range: string]: string } = {} |
76 | ||
d7a25329 | 77 | const videoPath = getVideoFilePath(hlsPlaylist, file) |
4c280004 | 78 | const playlistPath = join(playlistDirectory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution)) |
09209296 | 79 | |
4c280004 C |
80 | // Maybe the playlist is not generated for this resolution yet |
81 | if (!await pathExists(playlistPath)) continue | |
09209296 | 82 | |
4c280004 C |
83 | const playlistContent = await readFile(playlistPath) |
84 | const ranges = getRangesFromPlaylist(playlistContent.toString()) | |
09209296 | 85 | |
4c280004 C |
86 | const fd = await open(videoPath, 'r') |
87 | for (const range of ranges) { | |
88 | const buf = Buffer.alloc(range.length) | |
89 | await read(fd, buf, 0, range.length, range.offset) | |
90 | ||
91 | rangeHashes[`${range.offset}-${range.offset + range.length - 1}`] = sha256(buf) | |
92 | } | |
93 | await close(fd) | |
94 | ||
90a8bd30 | 95 | const videoFilename = file.filename |
4c280004 | 96 | json[videoFilename] = rangeHashes |
09209296 C |
97 | } |
98 | ||
4c280004 | 99 | const outputPath = join(playlistDirectory, VideoStreamingPlaylistModel.getHlsSha256SegmentsFilename()) |
09209296 C |
100 | await outputJSON(outputPath, json) |
101 | } | |
102 | ||
c6c0fa6c C |
103 | async function buildSha256Segment (segmentPath: string) { |
104 | const buf = await readFile(segmentPath) | |
105 | return sha256(buf) | |
106 | } | |
107 | ||
4c280004 C |
108 | function downloadPlaylistSegments (playlistUrl: string, destinationDir: string, timeout: number) { |
109 | let timer | |
09209296 | 110 | |
4c280004 | 111 | logger.info('Importing HLS playlist %s', playlistUrl) |
09209296 | 112 | |
ba5a8d89 | 113 | return new Promise<void>(async (res, rej) => { |
4c280004 | 114 | const tmpDirectory = join(CONFIG.STORAGE.TMP_DIR, await generateRandomString(10)) |
09209296 | 115 | |
4c280004 | 116 | await ensureDir(tmpDirectory) |
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117 | |
118 | timer = setTimeout(() => { | |
4c280004 | 119 | deleteTmpDirectory(tmpDirectory) |
09209296 C |
120 | |
121 | return rej(new Error('HLS download timeout.')) | |
122 | }, timeout) | |
123 | ||
4c280004 C |
124 | try { |
125 | // Fetch master playlist | |
126 | const subPlaylistUrls = await fetchUniqUrls(playlistUrl) | |
127 | ||
128 | const subRequests = subPlaylistUrls.map(u => fetchUniqUrls(u)) | |
129 | const fileUrls = uniq(flatten(await Promise.all(subRequests))) | |
130 | ||
131 | logger.debug('Will download %d HLS files.', fileUrls.length, { fileUrls }) | |
132 | ||
133 | for (const fileUrl of fileUrls) { | |
134 | const destPath = join(tmpDirectory, basename(fileUrl)) | |
135 | ||
bfe2ef6b | 136 | const bodyKBLimit = 10 * 1000 * 1000 // 10GB |
db4b15f2 | 137 | await doRequestAndSaveToFile(fileUrl, destPath, { bodyKBLimit }) |
4c280004 C |
138 | } |
139 | ||
140 | clearTimeout(timer) | |
141 | ||
142 | await move(tmpDirectory, destinationDir, { overwrite: true }) | |
143 | ||
144 | return res() | |
145 | } catch (err) { | |
146 | deleteTmpDirectory(tmpDirectory) | |
147 | ||
148 | return rej(err) | |
09209296 C |
149 | } |
150 | }) | |
4c280004 C |
151 | |
152 | function deleteTmpDirectory (directory: string) { | |
153 | remove(directory) | |
154 | .catch(err => logger.error('Cannot delete path on HLS download error.', { err })) | |
155 | } | |
156 | ||
157 | async function fetchUniqUrls (playlistUrl: string) { | |
db4b15f2 | 158 | const { body } = await doRequest(playlistUrl) |
4c280004 C |
159 | |
160 | if (!body) return [] | |
161 | ||
162 | const urls = body.split('\n') | |
163 | .filter(line => line.endsWith('.m3u8') || line.endsWith('.mp4')) | |
164 | .map(url => { | |
165 | if (url.startsWith('http://') || url.startsWith('https://')) return url | |
166 | ||
167 | return `${dirname(playlistUrl)}/${url}` | |
168 | }) | |
169 | ||
170 | return uniq(urls) | |
171 | } | |
09209296 C |
172 | } |
173 | ||
174 | // --------------------------------------------------------------------------- | |
175 | ||
176 | export { | |
177 | updateMasterHLSPlaylist, | |
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178 | updateSha256VODSegments, |
179 | buildSha256Segment, | |
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180 | downloadPlaylistSegments, |
181 | updateStreamingPlaylistsInfohashesIfNeeded | |
09209296 C |
182 | } |
183 | ||
184 | // --------------------------------------------------------------------------- | |
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185 | |
186 | function getRangesFromPlaylist (playlistContent: string) { | |
187 | const ranges: { offset: number, length: number }[] = [] | |
188 | const lines = playlistContent.split('\n') | |
189 | const regex = /^#EXT-X-BYTERANGE:(\d+)@(\d+)$/ | |
190 | ||
191 | for (const line of lines) { | |
192 | const captured = regex.exec(line) | |
193 | ||
194 | if (captured) { | |
195 | ranges.push({ length: parseInt(captured[1], 10), offset: parseInt(captured[2], 10) }) | |
196 | } | |
197 | } | |
198 | ||
199 | return ranges | |
200 | } |