+<!DOCTYPE html>
+<head>
+ <meta http-equiv="Content-type" content="text/html; charset=utf-8">
+ <title>GenerateManifest</title>
+ <script src=Atom.js></script>
+ <script>
+ // Add Blob.prototype.slice if it does not already exist:
+ if (typeof(Blob.prototype.slice) == 'undefined' && typeof(Blob.prototype.webkitSlice) != 'undefined')
+ Blob.prototype.slice = Blob.prototype.webkitSlice;
+
+ function onFileSelect(e) {
+ atoms = [];
+ var file = e.target.files[0];
+ var reader = new FileReader();
+ reader.readAsArrayBuffer(file);
+ reader.addEventListener('load', (e) => { onload(e, file); });
+ }
+
+ function onload(e, file) {
+ var reader = e.target;
+ var offset = 0;
+ while (offset < reader.result.byteLength) {
+ var atom = Atom.create(reader.result, offset);
+ offset += atom.size;
+ atoms.push(atom);
+ }
+
+ var manifest = generateManifest(atoms, file);
+ document.body.appendChild(document.createTextNode(JSON.stringify(manifest)));
+ }
+
+ function generateManifest(atoms, file)
+ {
+ var manifest = new Object;
+ manifest.url = file.name;
+
+ manifest.type = file.type;
+ var codecs = [];
+
+ var moov = atoms.find((atom) => { return atom.type === 'moov'; });
+ if (!moov)
+ return;
+
+ var timeScale = moov.getAtomByType('mdhd').timeScale
+
+ manifest.init = { offset: 0, size: moov.offset + moov.size };
+
+ var stsds = moov.getAtomsByType('stsd');
+ stsds.forEach((stsd) => {
+ stsd.getAtomsByType('avc1').forEach((avc1) => {
+ avc1.getAtomsByType('avcC').forEach((avcC) => {
+ var profile = ('0' + avcC.AVCProfileIndication.toString(16)).substr(-2);
+ var compat = ('0' + avcC.profileCompatibility.toString(16)).substr(-2);
+ var level = ('0' + avcC.AVCLevelIndication.toString(16)).substr(-2);
+ codecs.push(`"avc1.${profile + compat + level}"`);
+ });
+ });
+ stsd.getAtomsByType('hvc1').forEach((hvc1) => {
+ codecs.push(`"hvc1"`);
+ });
+ });
+
+ if (codecs.length)
+ manifest.type += `; codecs=${ codecs.join(',') }`;
+
+ manifest.media = [];
+ var trex = moov.getAtomsByType('trex')[0];
+
+ atoms.forEach((atom, index) => {
+ if (atom.type !== 'moof')
+ return;
+
+ var offset = atom.offset;
+ var size = atom.size;
+ var mdat = atoms[index + 1];
+ var timestamp = 0;
+ if (mdat.type === 'mdat')
+ size += mdat.size;
+ var tfdt = atom.getAtomByType('tfdt');
+ if (tfdt)
+ timestamp = tfdt.baseMediaDecodeTime / timeScale;
+
+ var defaultSampleDuration = trex.default_sample_duration;
+
+ var tfhd = atom.getAtomByType('tfhd');
+ if (tfhd.defaultSampleDurationPresent)
+ defaultSampleDuration = tfhd.defaultSampleDuration;
+
+ var totalDuration = 0;
+ var trun = atom.getAtomByType('trun');
+ trun.samples.forEach((sample) => {
+ if (trun.sampleDurationPresent)
+ totalDuration += sample.sampleDuration;
+ else
+ totalDuration += defaultSampleDuration;
+ });
+ var duration = totalDuration / timeScale;
+
+ manifest.media.push({ offset: offset, size: size, timestamp: timestamp, duration: duration });
+ });
+ return manifest;
+ }
+
+ function setup() {
+ document.getElementById('file').addEventListener('change', onFileSelect, false);
+ }
+ </script>
+</head>
+<body onload="setup()">
+ <input type="file" id="file" name="file" />
+ <div id=output></div>
+</body>
\ No newline at end of file
git://id.pley.net / movie_parser.git / blobdiff