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torrentcast.js
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torrentcast.js
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var readTorrent = require('read-torrent'),
bodyParser = require('body-parser'),
tempDir = require('os').tmpdir(),
peerflix = require('peerflix'),
uuid = require('node-uuid'),
app = require('express')(),
omx = require('omxctrl'),
path = require('path'),
fs = require('fs'),
engine;
var STATES = ['PLAYING', 'PAUSED', 'IDLE'];
var PORT = process.argv[2] || 9090;
var mappings = {
'/pause': 'pause',
'/speedup': 'increaseSpeed',
'/speeddown': 'decreaseSpeed',
'/nextaudio': 'nextAudioStream',
'/prevaudio': 'previousAudioStream',
'/nextsubtitle': 'nextSubtitleStream',
'/prevsubtitle': 'previousSubtitleStream',
'/togglesubtitle': 'toggleSubtitles',
'/volumeup': 'increaseVolume',
'/volumedown': 'decreaseVolume',
'/forward': 'seekForward',
'/backward': 'seekBackward',
'/fastforward': 'seekFastForward',
'/fastbackward': 'seekFastBackward'
};
app.use(bodyParser());
var stop = function() {
if (!engine) return;
engine.destroy();
engine = null;
};
var createTempFilename = function() {
return path.join(tempDir, 'torrentcast_' + uuid.v4());
};
var clearTempFiles = function() {
fs.readdir(tempDir, function(err, files) {
if (err) return;
files.forEach(function(file) {
if (file.substr(0, 11) === 'torrentcast') {
fs.rmdir(path.join(tempDir, file));
}
});
});
};
app.post('/play', function(req, res) {
if (!req.body.url) return res.send(400, { error: 'torrent url missung' });
readTorrent(req.body.url, function(err, torrent) {
if (err) return res.send(400, { error: 'torrent link could not be parsed' });
if (engine) stop();
clearTempFiles();
engine = peerflix(torrent, {
connections: 100,
path: createTempFilename(),
buffer: (1.5 * 1024 * 1024).toString()
});
engine.server.on('listening', function() {
omx.play('http://127.0.0.1:' + engine.server.address().port + '/');
res.send(200);
});
});
});
app.post('/stop', function(req, res) {
stop();
res.send(200);
});
app.get('/state', function(req, res) {
res.send(200, STATES[omx.getState()]);
});
for (var route in mappings) {
(function(method) {
app.post(route, function(req, res) {
omx[method]();
res.send(200);
});
})(mappings[route]);
}
module.exports = function() {
console.log('torrentcast running on port', PORT);
app.listen(PORT);
};