1 jackwsmeter - jack meter over websockets
2 ========================================
4 jackwsmeter get the signal values of the audio signals that flow through
5 JACK ports and make the peak levels available over a websocket link,
6 it's a clean and efficient way to get an overview of levels from a serie
13 JACK <http://jackaudio.org> and libwebsockets <http://libwebsockets.org>
14 development files are required.
16 Building and installing is done via the autotools:
26 Run the following command, then open your browser at http://localhost:7681.
28 jackwsmeter system:capture_1 system:capture_2
30 It's also possible to specify invalid ports, in that case the corresponding
31 number of jack input ports will be created but unconnected; the following
32 command creates four input ports:
36 (the limit is set at 20 input ports)
42 jackwsmeter comes with a minimalistic HTML page but can be used in much better
43 integration when using its WebSocket interface.
45 The WebSocket protocol string is jack-wsmeter-protocol, it will periodically
46 emit a message consisting of a string containing a space separated list of
49 var ws = new WebSocket('ws://localhost:7681', 'jack-wsmeter-protocol');
50 ws.onmessage = function(event) {
51 var peaks = event.data.split(" ");
52 console.log('got ', peaks.length, ' measures:', event.data);
59 jackwsmeter was developed to be used in Radio Panik, a free community radio in
60 Brussels, Belgium. <http://www.radiopanik.org>
66 You can send bug reports or any kind of comment to the author.
68 mailto:Frederic Peters <fpeters@0d.be>