darko
91 linhas
2.7 KiB
JavaScript
91 linhas
2.7 KiB
JavaScript
var http = require('http');
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var fs = require('fs');
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var srt2vtt = require('srt2vtt');
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var internalIp = require('internal-ip');
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var debug = require('debug')('castnow:subtitles');
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var got = require('got');
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var port = 4101;
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var srtToVtt = function(options, cb) {
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var source = options.subtitles;
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var handler = fs.existsSync(source) ? fs.readFile : got;
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var encoder = options['bypass-srt-encoding'] ? srt2vtt.raw : srt2vtt;
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handler(source, function(err, content) {
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if (err) return cb(err);
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if (!isSrt(source)) return cb(null, content);
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encoder(content, function(err, data) {
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if (err) return cb(err);
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debug('converted srt to vtt: %s', source);
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cb(null, data);
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});
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});
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};
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var isSrt = function(path) {
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return path.substr(-4).toLowerCase() === '.srt';
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};
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var attachSubtitles = function(ctx) {
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if (!ctx.options.playlist[0].media) {
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ctx.options.playlist[0].media = {};
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}
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ctx.options.playlist[0].media.textTrackStyle = {
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backgroundColor: '#00000000',
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foregroundColor: ctx.options['subtitle-color'] || '#FFFF00FF',
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edgeType: 'OUTLINE',
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edgeColor: '#000000FF',
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fontScale: ctx.options['subtitle-scale'],
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fontStyle: 'NORMAL',
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fontFamily: 'Droid Sans',
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fontGenericFamily: 'SANS_SERIF',
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windowColor: '#AA00FFFF',
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windowRoundedCornerRadius: 10,
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windowType: 'NONE'
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};
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ctx.options.playlist[0].media.tracks = [{
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trackId: 1,
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type: 'TEXT',
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trackContentId: ctx.options.subtitles,
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trackContentType: 'text/vtt',
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name: 'English',
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language: 'en-US',
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subtype: 'SUBTITLES'
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}];
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ctx.options.playlist[0].activeTrackIds = [1];
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};
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/*
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** Handles subtitles, the process is the following:
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** - Is there subtitles in the command line ?
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** - Is there a media defined ?
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** - Are those subtitles stored locally (.srt) or on a distant server (.vtt) ?
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** - If they are stored locally we need to convert and serve them via http.
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*/
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var subtitles = function(ctx, next) {
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if (!ctx.options.subtitles) return next();
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if (ctx.options.playlist.length > 1) return next();
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srtToVtt(ctx.options, function(err, data) {
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if (err) return next();
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debug('loading subtitles', ctx.options.subtitles);
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if (err) return next();
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var ip = ctx.options.myip || internalIp();
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var addr = 'http://' + ip + ':' + port;
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http.createServer(function(req, res) {
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debug('incoming request');
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res.writeHead(200, {
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'Access-Control-Allow-Origin': '*',
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'Content-Length': data.length,
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'Content-type': 'text/vtt;charset=utf-8'
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});
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res.end(data);
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}).listen(port);
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debug('started webserver on address %s using port %s', ip, port);
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ctx.options.subtitles = addr;
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attachSubtitles(ctx);
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next();
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});
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};
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module.exports = subtitles;
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