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Add some site-wide video playback quality control settings to Dailymotion.
目前为
// ==UserScript==
// @id www.dailymotion.com-6843eec7-c1ba-4a14-8700-738e52bcb8e6@http://foo.bar/baz
// @name Dailymotion: "Playback Quality Control" Feature
// @version 0.0.1
// @namespace http://foo.bar/baz
// @author David Toso
// @description Add some site-wide video playback quality control settings to Dailymotion.
// @include http://www.dailymotion.com/video/*
// @require http://code.jquery.com/jquery-1.9.1.min.js
// @run-at document-end
// ==/UserScript==
(function($){
var uwin = unsafeWindow;
var doc = uwin.document;
var vID = uwin.DM_CurrentVideoXID;
$('#player_main').css('background-color', '#00669d');
// Wait for element given by selector to become available
var waitFor = function(selector, cb) {
if ($(selector, doc).get(0)) return cb();
else setTimeout(function(){ waitFor(selector, cb); }, 200);
};
// Get a list of available 'quality' settings for the current video
// (in *old* API format -- convert to numeric as per *new* API).
var getAvailableResolutions = function (video_id, cb) {
$('#player_main').html(
'<div id="get_res" style="width: 100%; margin-top: 160px; font-size: '+
'22px; text-align: center; color: white; font-weight: bold">Getting '+
'available resolutions...</div>');
var rest_apis = 'https://api.dailymotion.com';
GM_xmlhttpRequest({
method: "GET",
url: rest_apis+"/video/"+video_id+"?fields=available_formats",
onload: function(res) {
var obj = JSON.parse(res.responseText);
var avail = obj.available_formats;
var fmts = [];
for (var i=0; i<avail.length; i++) {
switch(avail[i]) {
case 'ld': fmts.push(240); break;
case 'sd': fmts.push(380); break;
case 'hq': fmts.push(480); break;
case 'hd720': fmts.push(720); break;
case 'hd1080': fmts.push(1080); break;
}
}
cb(fmts);
}
});
};
// Inject a 'Quality' video tab which shows the available resolutions
// (current highlighted), and allows the user to select the maximum
// resolution they'd like to set on future video views
var build_quality_tab = function(best, max, avail, auto) {
avail = avail.map(function(e){ return e+'P'; }).join(", ");
var re = new RegExp('(, )*('+best+'P)');
avail = avail.replace(re, function(_all, _p, _f) { return _p+'<b>'+_f+'</b>'; });
// find tabs & corresponding panels
var tabs = $('.pl_video_tabs ul.mo_tabs');
var panels = $('.pl_video_tabs');
// Render tab
tabs.append(
'<li id="tab_myquality" class="pull-start mrg-end-lg"><a class="alt-link'+
' link-border-color-on-hvr" href="">Quality</li>');
panels.append(
'<div id="tab_myquality_content" class="pl_video_tabmyquality tab_content'+
' clearfix" style="display: none"></div>');
// Render panel
var myPanel = $('#tab_myquality_content');
myPanel.append(
'<h3 class="tab_title clearfix" style="clear:both; font-weight: normal; '+
'font-size: 20px; color: #0079B8; font-family: arial;">Playback Quality '+
'Settings</h3>');
myPanel.append(
'<p style="font-weight: normal; margin-top: 15px; font-size: 15px; color:'+
' black; font-family: arial;"><span style="display: inline-block; width: '+
'188px;">Resolutions available: </span>'+avail+'</p>');
myPanel.append(
'<p style="font-weight: normal; margin-top: 3px; font-size: 15px; color:'+
' black; font-family: arial;"><span style="display: inline-block; width: '+
'188px;">Maximum desired quality: </span><select id="my_sel_qual" style="'+
'font-size: 12px; width: 230px; background-color: white;"><option value="'+
'240">240P - I don\'t even</option><option value="380">380P - Low Quality'+
'</option><option value="480">480P - Standard Definition</option><option '+
'value="720">720P - High Quality</option><option value="1080">1080P - '+
'Highest Quality</option></select></p>');
myPanel.append(
'<p style="font-weight: normal; margin-top: 3px; font-size: 15px; color:'+
' black; font-family: arial;"><span style="display: inline-block; width: '+
'188px;">Automatic playback: </span><select id="my_auto_play" style="'+
'font-size: 12px; width: 230px; background-color: white;"><option value="'+
'Yes">Yes</option><option value="No">No</option></select></p>');
// Record changes to max desired playback quality setting
$('#my_sel_qual')
.val(max)
.change(function(){
GM_setValue('max_desired_quality', $('#my_sel_qual').eq(0).val()*1);
});
// Record changes to auto playback setting
$('#my_auto_play')
.val(auto)
.change(function(){
GM_setValue('auto_playback', $('#my_auto_play').eq(0).val());
});
};
// Select the best resolution available (from the given list) or
// the maximum desired resolution (as previously recorded) whichever
// is lowest.
var select_best_resolution = function (resolutions, cb) {
// set 1080p as max desired resolution if setting has never been recorded
if (GM_getValue('max_desired_quality',null) == null) {
GM_setValue('max_desired_quality', 1080);
}
// set Yes as auto playback setting if setting has never been recorded
if (GM_getValue('auto_playback',null) == null) {
GM_setValue('auto_playback', 'Yes');
}
// choose best available resolution
var avail = resolutions.slice(0);
var best = resolutions.pop();
// downgrade to desired maximum if required
var max = GM_getValue('max_desired_quality',null);
var auto = GM_getValue('auto_playback');
while (best > max) { best = resolutions.pop(); }
// fall back to 380 (seems to always be available)
if (best == null) best = 380;
// notify of selected resolution
$('#player_main').html(
'<div id="sel_res" style="width: 100%; margin-top: 160px; font-size: 22px;'+
' text-align: center; color: white; font-weight: bold">Selected: '+best+
'P</div>');
$('#sel_res')
.fadeOut(1500, function(){
$(this).remove();
cb(best, auto);
});
// asynchronously: build quality tab
setTimeout(function(){ build_quality_tab(best, max, avail, auto); },1);
};
// Load the video associated with the current Dailymotion video page using
// their public video embedding JavaScript API. This has some limitations
// and quirks which need to be addressed.
var load_video = function(video_id, quality, auto) {
// Asynchronously load the embedding library
//
// XXX: This is absolutely full of advertising crap... can we get rid of that
// stuff while remaining clear of copyright concerns?
(function() {
var e = document.createElement('script');
e.async = true;
e.src = document.location.protocol + '//api.dmcdn.net/all.js';
var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(e, s);
}());
// when the flash, iframe & API are all ready, execute some user code...
uwin.dmAsyncInit = function()
{
// Configure player with previously chosen video quality.
var params = {
api: 1,
quality: quality,
related: 0,
logo: 0,
info: 0,
autoplay: auto=='Yes'?1:0
};
// Actually ask for the video to be loaded!
var player = uwin.DM.player('player_main', {
video: vID,
width: 620,
height: 348,
params: params
});
// when we can talk to the flash player via JavaScript...
player.addEventListener("apiready", function(e)
{
var x = e.target.contentWindow;
var ool = x.onload;
//console.log(x);
x.onload = function() {
//console.log("TESTING! [iframe onload]");
if (ool) ool.apply(this, arguments);
};
});
};
};
// Prevent the normal Dailymotion player from runnning...
waitFor('#video_player_main', function(){
$('#video_player_main').remove();
// XXX: For some reason the GM_xmlhttpRequest on the REST API fails
// unless we wait til some other things have completed.
waitFor('.pl_video_tabs ul.mo_tabs', function(){
// Get the available video resolutions via the REST API
getAvailableResolutions(vID, function(resolutions) {
// Select the appropriate video resolution and start to render
// the 'Quality' configuration video tab interface
select_best_resolution(resolutions, function(best, auto) {
// Request that the video be loaded by the embedded player API
load_video(vID, best, auto);
});
});
});
});
})(jQuery);