Chrome Extension / Generate a M3U or XSPF playlist from HTML <a> links. Useful for playing audios/movies on a HTTP server.

content_script.js

$(document).ready(function(){
	var exts = ["aif","avi","flac","m4a","mkv","mov","mp3","mp4","ogg","ogv","opus","wav"];
	var m3u = "";

	for (var i = 0; i < $('a').size(); ++i) {
		var $uri = $('a').eq(i);
		var absuri = $uri.attr('href');
		
		var available_format = false;
		
		exts.forEach(function(ext) {
			if (absuri.lastIndexOf("."+ext) != -1) {
				available_format = true;
			}
		});

		if (!available_format) continue;

		if (absuri.indexOf('/') == 0) {
			var uri = document.location.protocol + "//"
			+ document.location.host
			+ absuri;
		}
		else {
				var uri = document.location.protocol + "//"
			+ document.location.host
			+ document.location.pathname
			+ absuri;
		}
		m3u += uri + "\n";
	}

	var data = new Blob([m3u]);

	$("<a/>", {
		'href': URL.createObjectURL(data),
		'type':'audio/x-mpegurl',
		'download':document.title+'.m3u',
		'text':'download m3u',
	}).appendTo('body');
});

content_script_xspf.js

function eschtml(body) {
    return jQuery('<div>').text(body).html();
}
$(document).ready(function(){
    var exts = ["aif","avi","flac","m4a","mkv","mov","mp3","mp4","ogg","ogv","opus","wav"];
    var xspf = '<?xml version="1.0" encoding="UTF-8"?><playlist version="1" xmlns="http://xspf.org/ns/0/">\n<trackList>\n';

    for (var i = 0; i < $('a').size(); ++i) {
        var $uri = $('a').eq(i);
        var absuri = $uri.attr('href');
        var title = $uri.text();
        
        var available_format = false;
        
        exts.forEach(function(ext) {
            if (absuri.lastIndexOf("."+ext) != -1) {
                available_format = true;
            }
        });

        if (!available_format) continue;

        if (absuri.indexOf('/') == 0) {
            var uri = document.location.protocol + "//"
            + document.location.host
            + absuri;
        }
        else {
                var uri = document.location.protocol + "//"
            + document.location.host
            + document.location.pathname
            + absuri;
        }
        xspf += "<track><album>" + eschtml(document.title) + "</album><title>" + eschtml(title) + "</title><location>" + uri + "</location></track>\n";
    }
    xspf += "</trackList></playlist>\n";

    var data = new Blob([xspf]);

    $("<a/>", {
        'href': URL.createObjectURL(data),
        'type':'audio/x-mpegurl',
        'download':document.title+'.xspf',
        'text':'download xspf',
    }).appendTo('body');
});

manifest.json

{
  "name": "PLS converter",
  "description": "",
  "version": "1.0",
  "content_scripts": [
    { "matches": ["http://your_media_server/*"], "js": ["jquery-2.1.3.min.js","content_script_xspf.js"] }
  ],
  "permissions": [
	  "http://your_media_server/*",
	  "notifications"
  ],
  "manifest_version": 2
}