MediaInfoOnline.js

A Javascript API works with MediaInfoLib.

Dieses Skript sollte nicht direkt installiert werden. Es handelt sich hier um eine Bibliothek für andere Skripte, welche über folgenden Befehl in den Metadaten eines Skriptes eingebunden wird // @require https://update.greasyfork.org/scripts/377671/670848/MediaInfoOnlinejs.js

Du musst eine Erweiterung wie Tampermonkey, Greasemonkey oder Violentmonkey installieren, um dieses Skript zu installieren.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

Sie müssten eine Skript Manager Erweiterung installieren damit sie dieses Skript installieren können

(Ich habe schon ein Skript Manager, Lass mich es installieren!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         MediaInfoOnline.js
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  A Javascript API works with MediaInfoLib.
// @author       You
// @match        *
// @require      https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js
// @grant        none
// ==/UserScript==
var $ = window.jQuery;
window.MediaInfoOnline = function(input_resource, textarea_mediainfo, input_mediainfo, span_mediainfo, select_format){
    var MediaInfo_lib_instance;
    var result;
    var key;
    var processing = false;
    var keyToParse = 1024 * 1024;
    var cueIn = function(){
        MediaInfo_lib_instance = MediaInfoLib({
            'locateFile': ()=>'',
            'postRun': function(){
                initializeAll();
            }
        });
    };
    var fadeInThenFadeOut = function(span_mediainfo, content, time, color){
        span_mediainfo.text(content).css('color', color).fadeIn(function(){
            $(this).delay(time).fadeOut(function(){
                span_mediainfo.text('');
            });
        });
    }
    var initializeAll = function(){
        $(document).ready(function(){
            var output_formats = JSON.parse(MediaInfo_lib_instance.MediaInfo.Option_Static('Info_OutputFormats_JSON'));
            $.each(output_formats.output, function(e, a){
                select_format.append(
                    $('<option/>', {
                        value: a.name,
                        mime: a.mime
                    }).text(a.desc)
                );
            });
            input_resource.prop('disabled', false);
            DOMEventInit();
        });
    };
    var DOMEventInit = function(){
        input_resource.on('change', function(){
            var input_resource_DOM = $(this)[0];
            if(input_resource_DOM.files.length > 0){
                startParseMediaInfo(input_resource_DOM.files[0]);
            }
        });
        select_format.on('change', function(){
            if(processing){
                input_mediainfo.prop('disabled', true);
                input_mediainfo.attr('value', '稍等');
                regenByType($(this).val(), $(this).find(':selected').attr('mime'));
            }
        });
        input_mediainfo.on('click', function(e){
            e.preventDefault();
            textarea_mediainfo[0].select();
            try{
                var successful = document.execCommand('copy');
                var msg = successful?{'text': '成功', 'color': '#2276BB'}:{'text': '失败', 'color': '#DD8944'};
                fadeInThenFadeOut(span_mediainfo, 'MediaInfo复制' + msg.text, 500, msg.color);
            }
            catch(error){
                fadeInThenFadeOut(span_mediainfo, '无法复制MediaInfo', 500, '#DD8944');
            }
        })
    }
    var regenByType = function(type, mime){
    	result.Option('Inform', 'JSON');
    	window.MediaInfoOnline.json = JSON.parse(result.Inform().trim());
        result.Option('Inform', type);
        input_mediainfo.attr('value', '复制');
        render(mime);
        input_mediainfo.prop('disabled', false);
    };
    var render = function(mime){
        textarea_mediainfo.text(result.Inform().trim());
    };
    var startParseMediaInfo = function(file){
        if(processing){
            processingDone();
        }
        try{
            parseFile(file);
        }
        catch(error){
            alert('Your browser is not compatible.');
        }
    };
    var processingDone = function(){
        result.Close();
        result.delete;
        processing = false;
        input_mediainfo.prop('disabled', false);
        input_mediainfo.attr('value', '复制');
    };
    var parseFile = function(file){
        if(processing){
            return;
        }
        input_mediainfo.prop('disabled', true);
        input_mediainfo.attr('value', '稍等');
        processing = true;
        key = file.name;
        var offset = 0;
        result = new MediaInfo_lib_instance.MediaInfo;
        result.Option('File_FileName', file.name);
        result.Open_Buffer_Init(file.size, 0);
        var seek = function(length){
            if(processing){
                var reader = new FileReader;
                var b = file.slice(offset, offset + length);
                reader.onload = processChunk;
                reader.readAsArrayBuffer(b);
            }
            else{
                processingDone();
            }
        };
        var processChunk = function(event){
            if(event.target.error === null){
                try{
                    var m = result.Open_Buffer_Continue(event.target.result);
                }
                catch(error){
                    processingDone();
                    alert('An error happened reading your file.');
                    return;
                }
                var next_position = result.Open_Buffer_Continue_Goto_Get();
                if(next_position === -1){
                    offset = offset + event.target.result.byteLength;
                }
                else{
                    offset = next_position;
                    result.Open_Buffer_Init(file.size, next_position);
                }
            }
            else{
                processingDone();
                alert('An error happened reading your file.');
                return;
            }
            if(m & 8 || event.target.result.byteLength < 1){
                result.Open_Buffer_Finalize();
                regenByType(select_format.val(), select_format.find(':selected').attr('mime'));
                input_mediainfo.prop('disabled', false);
                input_mediainfo.attr('value', '复制');
                return;
            }
            seek(keyToParse);
        };
        seek(keyToParse);
    };
    return {
        init: cueIn
    };
}