47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
module.exports = torrentPoster
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var captureVideoFrame = require('./capture-video-frame')
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function torrentPoster (torrent, cb) {
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// use largest file
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var index = torrent.files.indexOf(torrent.files.reduce(function (a, b) {
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return a.length > b.length ? a : b
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}))
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var server = torrent.createServer(0)
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server.listen(0, onListening)
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function onListening () {
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var port = server.address().port
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var url = 'http://localhost:' + port + '/' + index
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var video = document.createElement('video')
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video.addEventListener('canplay', onCanPlay)
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video.volume = 0
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video.src = url
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video.play()
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function onCanPlay () {
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video.removeEventListener('canplay', onCanPlay)
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video.addEventListener('seeked', onSeeked)
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video.currentTime = Math.min((video.duration || 600) * 0.03, 60)
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}
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function onSeeked () {
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video.removeEventListener('seeked', onSeeked)
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var buf = captureVideoFrame(video)
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// unload video element
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video.pause()
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video.src = ''
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video.load()
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server.destroy()
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cb(null, buf)
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}
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}
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}
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