diff options
Diffstat (limited to 'client/src/assets/player/webtorrent/video-renderer.ts')
-rw-r--r-- | client/src/assets/player/webtorrent/video-renderer.ts | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/client/src/assets/player/webtorrent/video-renderer.ts b/client/src/assets/player/webtorrent/video-renderer.ts new file mode 100644 index 000000000..a3415937b --- /dev/null +++ b/client/src/assets/player/webtorrent/video-renderer.ts | |||
@@ -0,0 +1,134 @@ | |||
1 | // Thanks: https://github.com/feross/render-media | ||
2 | // TODO: use render-media once https://github.com/feross/render-media/issues/32 is fixed | ||
3 | |||
4 | const MediaElementWrapper = require('mediasource') | ||
5 | import { extname } from 'path' | ||
6 | const videostream = require('videostream') | ||
7 | |||
8 | const VIDEOSTREAM_EXTS = [ | ||
9 | '.m4a', | ||
10 | '.m4v', | ||
11 | '.mp4' | ||
12 | ] | ||
13 | |||
14 | type RenderMediaOptions = { | ||
15 | controls: boolean | ||
16 | autoplay: boolean | ||
17 | } | ||
18 | |||
19 | function renderVideo ( | ||
20 | file: any, | ||
21 | elem: HTMLVideoElement, | ||
22 | opts: RenderMediaOptions, | ||
23 | callback: (err: Error, renderer: any) => void | ||
24 | ) { | ||
25 | validateFile(file) | ||
26 | |||
27 | return renderMedia(file, elem, opts, callback) | ||
28 | } | ||
29 | |||
30 | function renderMedia (file: any, elem: HTMLVideoElement, opts: RenderMediaOptions, callback: (err: Error, renderer?: any) => void) { | ||
31 | const extension = extname(file.name).toLowerCase() | ||
32 | let preparedElem: any = undefined | ||
33 | let currentTime = 0 | ||
34 | let renderer: any | ||
35 | |||
36 | try { | ||
37 | if (VIDEOSTREAM_EXTS.indexOf(extension) >= 0) { | ||
38 | renderer = useVideostream() | ||
39 | } else { | ||
40 | renderer = useMediaSource() | ||
41 | } | ||
42 | } catch (err) { | ||
43 | return callback(err) | ||
44 | } | ||
45 | |||
46 | function useVideostream () { | ||
47 | prepareElem() | ||
48 | preparedElem.addEventListener('error', function onError (err: Error) { | ||
49 | preparedElem.removeEventListener('error', onError) | ||
50 | |||
51 | return callback(err) | ||
52 | }) | ||
53 | preparedElem.addEventListener('loadstart', onLoadStart) | ||
54 | return videostream(file, preparedElem) | ||
55 | } | ||
56 | |||
57 | function useMediaSource (useVP9 = false) { | ||
58 | const codecs = getCodec(file.name, useVP9) | ||
59 | |||
60 | prepareElem() | ||
61 | preparedElem.addEventListener('error', function onError (err: Error) { | ||
62 | preparedElem.removeEventListener('error', onError) | ||
63 | |||
64 | // Try with vp9 before returning an error | ||
65 | if (codecs.indexOf('vp8') !== -1) return fallbackToMediaSource(true) | ||
66 | |||
67 | return callback(err) | ||
68 | }) | ||
69 | preparedElem.addEventListener('loadstart', onLoadStart) | ||
70 | |||
71 | const wrapper = new MediaElementWrapper(preparedElem) | ||
72 | const writable = wrapper.createWriteStream(codecs) | ||
73 | file.createReadStream().pipe(writable) | ||
74 | |||
75 | if (currentTime) preparedElem.currentTime = currentTime | ||
76 | |||
77 | return wrapper | ||
78 | } | ||
79 | |||
80 | function fallbackToMediaSource (useVP9 = false) { | ||
81 | if (useVP9 === true) console.log('Falling back to media source with VP9 enabled.') | ||
82 | else console.log('Falling back to media source..') | ||
83 | |||
84 | useMediaSource(useVP9) | ||
85 | } | ||
86 | |||
87 | function prepareElem () { | ||
88 | if (preparedElem === undefined) { | ||
89 | preparedElem = elem | ||
90 | |||
91 | preparedElem.addEventListener('progress', function () { | ||
92 | currentTime = elem.currentTime | ||
93 | }) | ||
94 | } | ||
95 | } | ||
96 | |||
97 | function onLoadStart () { | ||
98 | preparedElem.removeEventListener('loadstart', onLoadStart) | ||
99 | if (opts.autoplay) preparedElem.play() | ||
100 | |||
101 | callback(null, renderer) | ||
102 | } | ||
103 | } | ||
104 | |||
105 | function validateFile (file: any) { | ||
106 | if (file == null) { | ||
107 | throw new Error('file cannot be null or undefined') | ||
108 | } | ||
109 | if (typeof file.name !== 'string') { | ||
110 | throw new Error('missing or invalid file.name property') | ||
111 | } | ||
112 | if (typeof file.createReadStream !== 'function') { | ||
113 | throw new Error('missing or invalid file.createReadStream property') | ||
114 | } | ||
115 | } | ||
116 | |||
117 | function getCodec (name: string, useVP9 = false) { | ||
118 | const ext = extname(name).toLowerCase() | ||
119 | if (ext === '.mp4') { | ||
120 | return 'video/mp4; codecs="avc1.640029, mp4a.40.5"' | ||
121 | } | ||
122 | |||
123 | if (ext === '.webm') { | ||
124 | if (useVP9 === true) return 'video/webm; codecs="vp9, opus"' | ||
125 | |||
126 | return 'video/webm; codecs="vp8, vorbis"' | ||
127 | } | ||
128 | |||
129 | return undefined | ||
130 | } | ||
131 | |||
132 | export { | ||
133 | renderVideo | ||
134 | } | ||