1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
import { basename, dirname, join } from 'path'
import { HLS_STREAMING_PLAYLIST_DIRECTORY, P2P_MEDIA_LOADER_PEER_VERSION } from '../initializers/constants'
import { close, ensureDir, move, open, outputJSON, pathExists, read, readFile, remove, writeFile } from 'fs-extra'
import { getVideoStreamSize, getAudioStreamCodec, getVideoStreamCodec } from '../helpers/ffmpeg-utils'
import { sha256 } from '../helpers/core-utils'
import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
import { logger } from '../helpers/logger'
import { doRequest, doRequestAndSaveToFile } from '../helpers/requests'
import { generateRandomString } from '../helpers/utils'
import { flatten, uniq } from 'lodash'
import { VideoFileModel } from '../models/video/video-file'
import { CONFIG } from '../initializers/config'
import { sequelizeTypescript } from '../initializers/database'
import { MVideoWithFile } from '@server/types/models'
import { getVideoFilename, getVideoFilePath } from './video-paths'
async function updateStreamingPlaylistsInfohashesIfNeeded () {
const playlistsToUpdate = await VideoStreamingPlaylistModel.listByIncorrectPeerVersion()
// Use separate SQL queries, because we could have many videos to update
for (const playlist of playlistsToUpdate) {
await sequelizeTypescript.transaction(async t => {
const videoFiles = await VideoFileModel.listByStreamingPlaylist(playlist.id, t)
playlist.p2pMediaLoaderInfohashes = VideoStreamingPlaylistModel.buildP2PMediaLoaderInfoHashes(playlist.playlistUrl, videoFiles)
playlist.p2pMediaLoaderPeerVersion = P2P_MEDIA_LOADER_PEER_VERSION
await playlist.save({ transaction: t })
})
}
}
async function updateMasterHLSPlaylist (video: MVideoWithFile) {
const directory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid)
const masterPlaylists: string[] = [ '#EXTM3U', '#EXT-X-VERSION:3' ]
const masterPlaylistPath = join(directory, VideoStreamingPlaylistModel.getMasterHlsPlaylistFilename())
const streamingPlaylist = video.getHLSPlaylist()
for (const file of streamingPlaylist.VideoFiles) {
// If we did not generated a playlist for this resolution, skip
const filePlaylistPath = join(directory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution))
if (await pathExists(filePlaylistPath) === false) continue
const videoFilePath = getVideoFilePath(streamingPlaylist, file)
const size = await getVideoStreamSize(videoFilePath)
const bandwidth = 'BANDWIDTH=' + video.getBandwidthBits(file)
const resolution = `RESOLUTION=${size.width}x${size.height}`
let line = `#EXT-X-STREAM-INF:${bandwidth},${resolution}`
if (file.fps) line += ',FRAME-RATE=' + file.fps
const videoCodec = await getVideoStreamCodec(videoFilePath)
line += `,CODECS="${videoCodec}`
const audioCodec = await getAudioStreamCodec(videoFilePath)
if (audioCodec) line += `,${audioCodec}`
line += '"'
masterPlaylists.push(line)
masterPlaylists.push(VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution))
}
await writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n')
}
async function updateSha256VODSegments (video: MVideoWithFile) {
const json: { [filename: string]: { [range: string]: string } } = {}
const playlistDirectory = join(HLS_STREAMING_PLAYLIST_DIRECTORY, video.uuid)
const hlsPlaylist = video.getHLSPlaylist()
// For all the resolutions available for this video
for (const file of hlsPlaylist.VideoFiles) {
const rangeHashes: { [range: string]: string } = {}
const videoPath = getVideoFilePath(hlsPlaylist, file)
const playlistPath = join(playlistDirectory, VideoStreamingPlaylistModel.getHlsPlaylistFilename(file.resolution))
// Maybe the playlist is not generated for this resolution yet
if (!await pathExists(playlistPath)) continue
const playlistContent = await readFile(playlistPath)
const ranges = getRangesFromPlaylist(playlistContent.toString())
const fd = await open(videoPath, 'r')
for (const range of ranges) {
const buf = Buffer.alloc(range.length)
await read(fd, buf, 0, range.length, range.offset)
rangeHashes[`${range.offset}-${range.offset + range.length - 1}`] = sha256(buf)
}
await close(fd)
const videoFilename = getVideoFilename(hlsPlaylist, file)
json[videoFilename] = rangeHashes
}
const outputPath = join(playlistDirectory, VideoStreamingPlaylistModel.getHlsSha256SegmentsFilename())
await outputJSON(outputPath, json)
}
async function buildSha256Segment (segmentPath: string) {
const buf = await readFile(segmentPath)
return sha256(buf)
}
function getRangesFromPlaylist (playlistContent: string) {
const ranges: { offset: number, length: number }[] = []
const lines = playlistContent.split('\n')
const regex = /^#EXT-X-BYTERANGE:(\d+)@(\d+)$/
for (const line of lines) {
const captured = regex.exec(line)
if (captured) {
ranges.push({ length: parseInt(captured[1], 10), offset: parseInt(captured[2], 10) })
}
}
return ranges
}
function downloadPlaylistSegments (playlistUrl: string, destinationDir: string, timeout: number) {
let timer
logger.info('Importing HLS playlist %s', playlistUrl)
return new Promise<string>(async (res, rej) => {
const tmpDirectory = join(CONFIG.STORAGE.TMP_DIR, await generateRandomString(10))
await ensureDir(tmpDirectory)
timer = setTimeout(() => {
deleteTmpDirectory(tmpDirectory)
return rej(new Error('HLS download timeout.'))
}, timeout)
try {
// Fetch master playlist
const subPlaylistUrls = await fetchUniqUrls(playlistUrl)
const subRequests = subPlaylistUrls.map(u => fetchUniqUrls(u))
const fileUrls = uniq(flatten(await Promise.all(subRequests)))
logger.debug('Will download %d HLS files.', fileUrls.length, { fileUrls })
for (const fileUrl of fileUrls) {
const destPath = join(tmpDirectory, basename(fileUrl))
const bodyKBLimit = 10 * 1000 * 1000 // 10GB
await doRequestAndSaveToFile({ uri: fileUrl }, destPath, bodyKBLimit)
}
clearTimeout(timer)
await move(tmpDirectory, destinationDir, { overwrite: true })
return res()
} catch (err) {
deleteTmpDirectory(tmpDirectory)
return rej(err)
}
})
function deleteTmpDirectory (directory: string) {
remove(directory)
.catch(err => logger.error('Cannot delete path on HLS download error.', { err }))
}
async function fetchUniqUrls (playlistUrl: string) {
const { body } = await doRequest<string>({ uri: playlistUrl })
if (!body) return []
const urls = body.split('\n')
.filter(line => line.endsWith('.m3u8') || line.endsWith('.mp4'))
.map(url => {
if (url.startsWith('http://') || url.startsWith('https://')) return url
return `${dirname(playlistUrl)}/${url}`
})
return uniq(urls)
}
}
// ---------------------------------------------------------------------------
export {
updateMasterHLSPlaylist,
updateSha256VODSegments,
buildSha256Segment,
downloadPlaylistSegments,
updateStreamingPlaylistsInfohashesIfNeeded
}
// ---------------------------------------------------------------------------
|
