]> git.immae.eu Git - github/Chocobozzz/PeerTube.git/blobdiff - server/lib/hls.ts
Merge branch 'feature/improve-live' into develop
[github/Chocobozzz/PeerTube.git] / server / lib / hls.ts
index f541dd5d1cc49bde6c669b89138ea4ae22c34251..053b5d3262f50f59fc9307e158690a87e97cb4af 100644 (file)
@@ -1,9 +1,12 @@
 import { close, ensureDir, move, open, outputJSON, read, readFile, remove, stat, writeFile } from 'fs-extra'
-import { flatten, uniq } from 'lodash'
+import { flatten } from 'lodash'
+import PQueue from 'p-queue'
 import { basename, dirname, join } from 'path'
-import { MStreamingPlaylistFilesVideo, MVideo, MVideoUUID } from '@server/types/models'
-import { sha256 } from '../helpers/core-utils'
-import { getAudioStreamCodec, getVideoStreamCodec, getVideoStreamSize } from '../helpers/ffprobe-utils'
+import { MStreamingPlaylist, MStreamingPlaylistFilesVideo, MVideo } from '@server/types/models'
+import { uniqify } from '@shared/core-utils'
+import { sha256 } from '@shared/extra-utils'
+import { VideoStorage } from '@shared/models'
+import { getAudioStreamCodec, getVideoStreamCodec, getVideoStreamDimensionsInfo } from '../helpers/ffmpeg'
 import { logger } from '../helpers/logger'
 import { doRequest, doRequestAndSaveToFile } from '../helpers/requests'
 import { generateRandomString } from '../helpers/utils'
@@ -12,7 +15,8 @@ import { P2P_MEDIA_LOADER_PEER_VERSION, REQUEST_TIMEOUTS } from '../initializers
 import { sequelizeTypescript } from '../initializers/database'
 import { VideoFileModel } from '../models/video/video-file'
 import { VideoStreamingPlaylistModel } from '../models/video/video-streaming-playlist'
-import { getHlsResolutionPlaylistFilename } from './paths'
+import { storeHLSFileFromFilename } from './object-storage'
+import { generateHLSMasterPlaylistFilename, generateHlsSha256SegmentsFilename, getHlsResolutionPlaylistFilename } from './paths'
 import { VideoPathManager } from './video-path-manager'
 
 async function updateStreamingPlaylistsInfohashesIfNeeded () {
@@ -31,71 +35,127 @@ async function updateStreamingPlaylistsInfohashesIfNeeded () {
   }
 }
 
-async function updateMasterHLSPlaylist (video: MVideo, playlist: MStreamingPlaylistFilesVideo) {
-  const masterPlaylists: string[] = [ '#EXTM3U', '#EXT-X-VERSION:3' ]
+async function updatePlaylistAfterFileChange (video: MVideo, playlist: MStreamingPlaylist) {
+  try {
+    let playlistWithFiles = await updateMasterHLSPlaylist(video, playlist)
+    playlistWithFiles = await updateSha256VODSegments(video, playlist)
 
-  for (const file of playlist.VideoFiles) {
-    const playlistFilename = getHlsResolutionPlaylistFilename(file.filename)
+    // Refresh playlist, operations can take some time
+    playlistWithFiles = await VideoStreamingPlaylistModel.loadWithVideoAndFiles(playlist.id)
+    playlistWithFiles.assignP2PMediaLoaderInfoHashes(video, playlistWithFiles.VideoFiles)
+    await playlistWithFiles.save()
 
-    await VideoPathManager.Instance.makeAvailableVideoFile(file.withVideoOrPlaylist(playlist), async videoFilePath => {
-      const size = await getVideoStreamSize(videoFilePath)
+    video.setHLSPlaylist(playlistWithFiles)
+  } catch (err) {
+    logger.info('Cannot update playlist after file change. Maybe due to concurrent transcoding', { err })
+  }
+}
 
-      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
+// Avoid concurrency issues when updating streaming playlist files
+const playlistFilesQueue = new PQueue({ concurrency: 1 })
 
-      const codecs = await Promise.all([
-        getVideoStreamCodec(videoFilePath),
-        getAudioStreamCodec(videoFilePath)
-      ])
+function updateMasterHLSPlaylist (video: MVideo, playlistArg: MStreamingPlaylist): Promise<MStreamingPlaylistFilesVideo> {
+  return playlistFilesQueue.add(async () => {
+    const playlist = await VideoStreamingPlaylistModel.loadWithVideoAndFiles(playlistArg.id)
 
-      line += `,CODECS="${codecs.filter(c => !!c).join(',')}"`
+    const masterPlaylists: string[] = [ '#EXTM3U', '#EXT-X-VERSION:3' ]
 
-      masterPlaylists.push(line)
-      masterPlaylists.push(playlistFilename)
-    })
-  }
+    for (const file of playlist.VideoFiles) {
+      const playlistFilename = getHlsResolutionPlaylistFilename(file.filename)
+
+      await VideoPathManager.Instance.makeAvailableVideoFile(file.withVideoOrPlaylist(playlist), async videoFilePath => {
+        const size = await getVideoStreamDimensionsInfo(videoFilePath)
+
+        const bandwidth = 'BANDWIDTH=' + video.getBandwidthBits(file)
+        const resolution = `RESOLUTION=${size?.width || 0}x${size?.height || 0}`
+
+        let line = `#EXT-X-STREAM-INF:${bandwidth},${resolution}`
+        if (file.fps) line += ',FRAME-RATE=' + file.fps
+
+        const codecs = await Promise.all([
+          getVideoStreamCodec(videoFilePath),
+          getAudioStreamCodec(videoFilePath)
+        ])
+
+        line += `,CODECS="${codecs.filter(c => !!c).join(',')}"`
+
+        masterPlaylists.push(line)
+        masterPlaylists.push(playlistFilename)
+      })
+    }
+
+    if (playlist.playlistFilename) {
+      await video.removeStreamingPlaylistFile(playlist, playlist.playlistFilename)
+    }
+    playlist.playlistFilename = generateHLSMasterPlaylistFilename(video.isLive)
+
+    const masterPlaylistPath = VideoPathManager.Instance.getFSHLSOutputPath(video, playlist.playlistFilename)
+    await writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n')
+
+    if (playlist.storage === VideoStorage.OBJECT_STORAGE) {
+      playlist.playlistUrl = await storeHLSFileFromFilename(playlist, playlist.playlistFilename)
+      await remove(masterPlaylistPath)
+    }
 
-  await VideoPathManager.Instance.makeAvailablePlaylistFile(playlist, playlist.playlistFilename, masterPlaylistPath => {
-    return writeFile(masterPlaylistPath, masterPlaylists.join('\n') + '\n')
+    return playlist.save()
   })
 }
 
-async function updateSha256VODSegments (video: MVideoUUID, playlist: MStreamingPlaylistFilesVideo) {
-  const json: { [filename: string]: { [range: string]: string } } = {}
+// ---------------------------------------------------------------------------
+
+function updateSha256VODSegments (video: MVideo, playlistArg: MStreamingPlaylist): Promise<MStreamingPlaylistFilesVideo> {
+  return playlistFilesQueue.add(async () => {
+    const json: { [filename: string]: { [range: string]: string } } = {}
+
+    const playlist = await VideoStreamingPlaylistModel.loadWithVideoAndFiles(playlistArg.id)
 
-  // For all the resolutions available for this video
-  for (const file of playlist.VideoFiles) {
-    const rangeHashes: { [range: string]: string } = {}
-    const fileWithPlaylist = file.withVideoOrPlaylist(playlist)
+    // For all the resolutions available for this video
+    for (const file of playlist.VideoFiles) {
+      const rangeHashes: { [range: string]: string } = {}
+      const fileWithPlaylist = file.withVideoOrPlaylist(playlist)
 
-    await VideoPathManager.Instance.makeAvailableVideoFile(fileWithPlaylist, videoPath => {
+      await VideoPathManager.Instance.makeAvailableVideoFile(fileWithPlaylist, videoPath => {
 
-      return VideoPathManager.Instance.makeAvailableResolutionPlaylistFile(fileWithPlaylist, async resolutionPlaylistPath => {
-        const playlistContent = await readFile(resolutionPlaylistPath)
-        const ranges = getRangesFromPlaylist(playlistContent.toString())
+        return VideoPathManager.Instance.makeAvailableResolutionPlaylistFile(fileWithPlaylist, async resolutionPlaylistPath => {
+          const playlistContent = await readFile(resolutionPlaylistPath)
+          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)
+          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)
+            rangeHashes[`${range.offset}-${range.offset + range.length - 1}`] = sha256(buf)
+          }
+          await close(fd)
 
-        const videoFilename = file.filename
-        json[videoFilename] = rangeHashes
+          const videoFilename = file.filename
+          json[videoFilename] = rangeHashes
+        })
       })
-    })
-  }
+    }
+
+    if (playlist.segmentsSha256Filename) {
+      await video.removeStreamingPlaylistFile(playlist, playlist.segmentsSha256Filename)
+    }
+    playlist.segmentsSha256Filename = generateHlsSha256SegmentsFilename(video.isLive)
+
+    const outputPath = VideoPathManager.Instance.getFSHLSOutputPath(video, playlist.segmentsSha256Filename)
+    await outputJSON(outputPath, json)
 
-  const outputPath = VideoPathManager.Instance.getFSHLSOutputPath(video, playlist.segmentsSha256Filename)
-  await outputJSON(outputPath, json)
+    if (playlist.storage === VideoStorage.OBJECT_STORAGE) {
+      playlist.segmentsSha256Url = await storeHLSFileFromFilename(playlist, playlist.segmentsSha256Filename)
+      await remove(outputPath)
+    }
+
+    return playlist.save()
+  })
 }
 
+// ---------------------------------------------------------------------------
+
 async function buildSha256Segment (segmentPath: string) {
   const buf = await readFile(segmentPath)
   return sha256(buf)
@@ -123,14 +183,14 @@ function downloadPlaylistSegments (playlistUrl: string, destinationDir: string,
       const subPlaylistUrls = await fetchUniqUrls(playlistUrl)
 
       const subRequests = subPlaylistUrls.map(u => fetchUniqUrls(u))
-      const fileUrls = uniq(flatten(await Promise.all(subRequests)))
+      const fileUrls = uniqify(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))
 
-        await doRequestAndSaveToFile(fileUrl, destPath, { bodyKBLimit: remainingBodyKBLimit, timeout: REQUEST_TIMEOUTS.FILE })
+        await doRequestAndSaveToFile(fileUrl, destPath, { bodyKBLimit: remainingBodyKBLimit, timeout: REQUEST_TIMEOUTS.REDUNDANCY })
 
         const { size } = await stat(destPath)
         remainingBodyKBLimit -= (size / 1000)
@@ -168,18 +228,26 @@ function downloadPlaylistSegments (playlistUrl: string, destinationDir: string,
         return `${dirname(playlistUrl)}/${url}`
       })
 
-    return uniq(urls)
+    return uniqify(urls)
   }
 }
 
 // ---------------------------------------------------------------------------
 
+function injectQueryToPlaylistUrls (content: string, queryString: string) {
+  return content.replace(/\.(m3u8|ts|mp4)/gm, '.$1?' + queryString)
+}
+
+// ---------------------------------------------------------------------------
+
 export {
   updateMasterHLSPlaylist,
   updateSha256VODSegments,
   buildSha256Segment,
   downloadPlaylistSegments,
-  updateStreamingPlaylistsInfohashesIfNeeded
+  updateStreamingPlaylistsInfohashesIfNeeded,
+  updatePlaylistAfterFileChange,
+  injectQueryToPlaylistUrls
 }
 
 // ---------------------------------------------------------------------------