jei / nodeshout

Native libshout bindings for nodejs.

nodeshout

Native libshout bindings for node.js.

Libshout allows applications to easily communicate and broadcast to an Icecast streaming media server. It handles the socket connections, metadata communication, and data streaming for the calling application, and lets developers focus on feature sets instead of implementation details.

More detail: http://icecast.org

Original libshout docs: http://www.aelius.com/njh/libshout-doc/libshout.html

Usage

You have to install libshout library before using nodeshout. If you work on OS X, you can install via homebrew.

brew install libshout

Then, install nodeshout via npm.

npm install nodeshout

Initalize nodeshout library, create a Shout instance and configure it.

// Initalize
nodeshout.init();

// Create a shout instance
var shout = nodeshout.create();

// Configure it
shout.setHost('localhost');
shout.setPort(8000);
shout.setUser('source');
shout.setPassword('password');
shout.setMount('mount');
shout.setFormat(1); // 0=ogg, 1=mp3
shout.setAudioInfo('bitrate', '192');
shout.setAudioInfo('samplerate', '44100');
shout.setAudioInfo('channels', '2');

Open the connection.

shout.open();

If connection is successful, above function will return nodeshout.ErrorTypes.SUCCESS which is integer 0. After successful connection, you can send audio file chunks via shout.send method.

shout.send(buffer, bytesRead);

For the synchronization, there is 2 method provided. First one is shout.sync() method, this method blocks current thread. Second one is shout.delay() method, this method returns how many milliseconds you should wait to send next audio chunk.

Metadata

// Create a metadata instance
var metadata = nodeshout.createMetadata();

// Set currently playing song.
metadata.add('song', 'Led Zeppelin - I can\'t quit you baby');

// Apply metadata to shout
shout.setMetadata(metadata);

Streams

Helper streams make all the things super-easy. You don't have to deal with reading and syncing stuff. They're avaliable >= 0.1.1.

Include helper stream classes.

var FileReadStream = require('nodeshout').FileReadStream,
    ShoutStream = require('nodeshout').ShoutStream;

and then pipe them together. That's all!

var fileStream = new FileReadStream('./some/music.mp3', 65536),
    shoutStream = fileStream.pipe(new ShoutStream(shout));

shoutStream.on('finish', function() {
    // Finished playing, you can create
    // another stream for next song
});

Example

Check the demos folder.