importScripts('MKVInfo.min.js');
// seules petites evolutions :
// prise en compte de l'indice du fichier transmis dans le message (lnum) pour pouvoir le retourner à l'appelant et
// présentation du retour : suppression des lignes "more info" pour les Codecs Audio et Video
// date : 2020/12/14
function duree(s) {
function onetotwo(Pint) {
if (Pint < 10) {
return '0' + Pint.toString();
} else {
return Pint.toString();
}
}
function onetothree(Pint) {
if (Pint < 10) {
return '00' + Pint.toString();
} else {
if (Pint < 100) {
return '0' + Pint.toString();
} else {
return Pint.toString();
}
}
}
let out = '';
let lhh = '';
let lmn = '';
let lss = '';
let lms = '';
lhh = Math.floor(s / 3600);
lmn = Math.floor((s - lhh * 3600) / 60);
lss = Math.floor(s - lhh * 3600 - lmn * 60);
lms = Math.ceil((s - lhh * 3600 - lmn * 60 - lss) * 1000);
if (lhh > 0) {
lhh = lhh.toString() + ":";
out = lhh;
}
if (lmn > 0) {
if (out.length == 0) {
out = lmn.toString() + ":";
} else {
out = out + onetotwo(lmn) + ":";
}
} else {
if (out.length > 0) {
out = out + "00:";
}
}
if (lss > 0) {
if (out.length == 0) {
out = lss.toString();
} else {
out = out + onetotwo(lss);
}
} else {
if (out.length == 0) {
out = "0";
} else {
out = out + "00";
}
}
if (lms != 0) {
out = out + '.' + onetothree(lms);
}
return out;
}
function humanFileSize(size) {
let i = Math.floor(Math.log(size) / Math.log(1024));
return (size / Math.pow(1024, i)).toFixed(2) * 1 + ' ' + ['o', 'ko', 'Mo', 'Go', 'To'][i];
};
function humanBitrate(size) {
let i = Math.floor(Math.log(size) / Math.log(1024));
return (size / Math.pow(1024, i)).toFixed(2) * 1 + ' ' + ['bps', 'kbps', 'Mbps', 'Gbps', 'Tbps'][i];
};
function human_reading(info) {
info.text = "ArouG's MKV/WebM Infos :\n";
info.text += "-------------------\n";
info.text += "File : " + info.filename + "\n";
let d= new Date(info.filedate);
info.text += "Date : " + (d.getFullYear()) + '/' + (d.getMonth() + 1) + '/' + d.getDate() + ' ' + d.getHours() + ':' + d.getMinutes() + "\n";
info.text += "Size : " + humanFileSize(info.filesize) + "\n";
info.text += "Format : "+info.typemovie+"\n";
if (info.UID){
info.text += "UniqueID : "+info.UID+"\n";
}
if (info.WritingLibrary) {
info.text += "Writing library : "+info.WritingLibrary+"\n";
}
info.text += "Duration : " + duree(info.dureeS) + "\n";
GlobBitrate = 8 * info.filesize / info.dureeS;
info.text += "Global bitrate : " + humanBitrate(GlobBitrate) + "\n";
if (info.Creator){
info.text += "Creator : " + info.Creator + "\n";
}
info.text += "Count of streams : " + info.tracks.length + "\n";
info.text += "\n";
for (let i = 0; i < info.tracks.length; i++) {
if (info.tracks[i].typeEnt == 'Video'){
info.text += "Video :\n";
}
if (info.tracks[i].typeEnt == 'Audio'){
info.text += "Audio :\n";
}
if (info.tracks[i].typeEnt == 'Subtitles'){
info.text += "Subtitles :\n";
}
info.text += "Track number " + info.tracks[i].Id + "\n";
if (info.tracks[i].typeEnt == 'Video' && (info.tracks[i].ConstantFramerate)){
let nbf=parseInt(info.dureeS * info.tracks[i].ConstantFramerate) + 1;
info.text += "Count of samples : " + nbf + "\n";
}
if (info.tracks[i].langage){
info.text += "Langage : " + info.tracks[i].langage + "\n";
}
if (info.tracks[i].name){
info.text += "Name : " + info.tracks[i].name + "\n";
}
info.text += "Default : " + info.tracks[i].default + "\n";
info.text += "Forced : " + info.tracks[i].forced + "\n";
if (info.tracks[i].typeEnt == 'Video') {
if (info.tracks[i].ConstantFramerate){
info.text += "Framerate : " + parseInt(info.tracks[i].ConstantFramerate * 1000) / 1000 + " FPS\n";
}
if (info.tracks[i].Swidth){
info.text += "Width on screen : " + info.tracks[i].Swidth + "\n";
info.text += "Heidth on screen : " + info.tracks[i].Sheight + "\n";
}
info.text += "Width in file : " + info.tracks[i].width + "\n";
info.text += "Heidth in file : " + info.tracks[i].height + "\n";
if (info.tracks[i].CodeC) {
//info.text += "Codec Video more info :\n";
info.text += "CodeC : " + info.tracks[i].CodeC + "\n";
}
}
if (info.tracks[i].typeEnt == 'Audio') {
if (info.tracks[i].CodeC) {
//info.text += "Codec Audio more info :\n";
info.text += "CodeC : " + info.tracks[i].CodeC + "\n";
}
info.text += "Count of channels : " + info.tracks[i].nbChannels + "\n";
info.text += "SampleRate : " + info.tracks[i].Freq + "\n";
}
if (info.tracks[i].typeEnt == 'Subtitles') {
if (info.tracks[i].CodeC) {
info.text += "CodeC : " + info.tracks[i].CodeC + "\n";
}
}
info.text += "\n";
}
return info.text;
}
onmessage = function(event) {
let file = event.data[0];
let lfname=file.name.toLowerCase();
let lnum = event.data[1];
let mkvregex = new RegExp("(.*?)\.(mkv|webm)$");
//if (file.type == 'video/x-matroska' || file.type == 'video/webm' || mkvregex.test(lfname)){
if (file.type == 'video/x-matroska' || file.type == 'video/webm'){
mkv(file, function(err, info) {
if (err) {
//console.log('error : ' + err);
postMessage({
'data' : 'error : ' + err,
'num' : lnum
});
} else {
sortie_texte = human_reading(info);
postMessage({
'data' : sortie_texte,
'num' : lnum
});
//console.log(sortie_texte);
}
});
} else {
postMessage({'data' : 'nop', 'num' : lnum});
}
}
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