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408 lines
16 KiB
408 lines
16 KiB
4 years ago
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'use strict';
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var
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QUnit = require('qunit'),
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probe = require('../lib/mp4/probe'),
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mp4Helpers = require('./utils/mp4-helpers'),
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box = mp4Helpers.box,
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// defined below
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moovWithoutMdhd,
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moovWithoutTkhd,
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moofWithTfdt,
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multiMoof,
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multiTraf,
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noTrunSamples,
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v1boxes;
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QUnit.module('MP4 Probe');
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QUnit.test('reads the timescale from an mdhd', function(assert) {
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// sampleMoov has a base timescale of 1000 with an override to 90kHz
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// in the mdhd
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assert.deepEqual(probe.timescale(new Uint8Array(mp4Helpers.sampleMoov)), {
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1: 90e3,
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2: 90e3
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}, 'found the timescale');
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});
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QUnit.test('reads tracks', function(assert) {
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var tracks = probe.tracks(new Uint8Array(mp4Helpers.sampleMoov));
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assert.equal(tracks.length, 2, 'two tracks');
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assert.equal(tracks[0].codec, 'avc1.4d400d', 'codec is correct');
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assert.equal(tracks[0].id, 1, 'id is correct');
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assert.equal(tracks[0].type, 'video', 'type is correct');
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assert.equal(tracks[0].timescale, 90e3, 'timescale is correct');
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assert.equal(tracks[1].codec, 'mp4a.40.2', 'codec is correct');
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assert.equal(tracks[1].id, 2, 'id is correct');
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assert.equal(tracks[1].type, 'audio', 'type is correct');
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assert.equal(tracks[1].timescale, 90e3, 'timescale is correct');
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});
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QUnit.test('returns null if the tkhd is missing', function(assert) {
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assert.equal(probe.timescale(new Uint8Array(moovWithoutTkhd)), null, 'indicated missing info');
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});
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QUnit.test('returns null if the mdhd is missing', function(assert) {
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assert.equal(probe.timescale(new Uint8Array(moovWithoutMdhd)), null, 'indicated missing info');
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});
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QUnit.test('startTime reads the base decode time from a tfdt', function(assert) {
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assert.equal(probe.startTime({
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4: 2
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}, new Uint8Array(moofWithTfdt)),
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0x01020304 / 2,
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'calculated base decode time');
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});
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QUnit.test('startTime returns the earliest base decode time', function(assert) {
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assert.equal(probe.startTime({
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4: 2,
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6: 1
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}, new Uint8Array(multiMoof)),
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0x01020304 / 2,
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'returned the earlier time');
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});
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QUnit.test('startTime parses 64-bit base decode times', function(assert) {
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assert.equal(probe.startTime({
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4: 3
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}, new Uint8Array(v1boxes)),
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0x0101020304 / 3,
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'parsed a long value');
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});
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QUnit.test('compositionStartTime calculates composition time using composition time' +
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'offset from first trun sample', function(assert) {
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assert.equal(probe.compositionStartTime({
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1: 6,
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4: 3
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}, new Uint8Array(moofWithTfdt)),
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(0x01020304 + 10) / 3,
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'calculated correct composition start time');
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});
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QUnit.test('compositionStartTime looks at only the first traf', function(assert) {
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assert.equal(probe.compositionStartTime({
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2: 6,
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4: 3
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}, new Uint8Array(multiTraf)),
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(0x01020304 + 10) / 3,
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'calculated composition start time from first traf');
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});
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QUnit.test('compositionStartTime uses default composition time offset of 0' +
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'if no trun samples present', function(assert) {
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assert.equal(probe.compositionStartTime({
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2: 6,
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4: 3
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}, new Uint8Array(noTrunSamples)),
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(0x01020304 + 0) / 3,
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'calculated correct composition start time using default offset');
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});
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QUnit.test('getTimescaleFromMediaHeader gets timescale for version 0 mdhd', function(assert) {
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var mdhd = new Uint8Array([
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0x00, // version 0
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0x00, 0x00, 0x00, // flags
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// version 0 has 32 bit creation_time, modification_time, and duration
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0x00, 0x00, 0x00, 0x02, // creation_time
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0x00, 0x00, 0x00, 0x03, // modification_time
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0x00, 0x00, 0x03, 0xe8, // timescale = 1000
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
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0x15, 0xc7 // 'eng' language
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]);
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assert.equal(
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probe.getTimescaleFromMediaHeader(mdhd),
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1000,
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'got timescale from version 0 mdhd'
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);
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});
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QUnit.test('getTimescaleFromMediaHeader gets timescale for version 0 mdhd', function(assert) {
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var mdhd = new Uint8Array([
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0x01, // version 1
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0x00, 0x00, 0x00, // flags
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// version 1 has 64 bit creation_time, modification_time, and duration
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, // creation_time
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, // modification_time
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0x00, 0x00, 0x03, 0xe8, // timescale = 1000
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
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0x15, 0xc7 // 'eng' language
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]);
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assert.equal(
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probe.getTimescaleFromMediaHeader(mdhd),
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1000,
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'got timescale from version 1 mdhd'
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);
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});
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// ---------
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// Test Data
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// ---------
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moovWithoutTkhd =
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box('moov',
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box('trak',
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box('mdia',
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box('mdhd',
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0x00, // version 0
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x02, // creation_time
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0x00, 0x00, 0x00, 0x03, // modification_time
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0x00, 0x00, 0x03, 0xe8, // timescale = 1000
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
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0x15, 0xc7, // 'eng' language
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0x00, 0x00),
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box('hdlr',
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0x00, // version 1
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x00, // pre_defined
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mp4Helpers.typeBytes('vide'), // handler_type
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0x00, 0x00, 0x00, 0x00, // reserved
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0x00, 0x00, 0x00, 0x00, // reserved
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0x00, 0x00, 0x00, 0x00, // reserved
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mp4Helpers.typeBytes('one'), 0x00)))); // name
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moovWithoutMdhd =
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box('moov',
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box('trak',
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box('tkhd',
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0x01, // version 1
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x02, // creation_time
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x03, // modification_time
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0x00, 0x00, 0x00, 0x01, // track_ID
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0x00, 0x00, 0x00, 0x00, // reserved
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, // reserved
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0x00, 0x00, // layer
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0x00, 0x00, // alternate_group
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0x00, 0x00, // non-audio track volume
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0x00, 0x00, // reserved
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mp4Helpers.unityMatrix,
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0x01, 0x2c, 0x00, 0x00, // 300 in 16.16 fixed-point
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0x00, 0x96, 0x00, 0x00), // 150 in 16.16 fixed-point
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box('mdia',
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box('hdlr',
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0x01, // version 1
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x00, // pre_defined
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mp4Helpers.typeBytes('vide'), // handler_type
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0x00, 0x00, 0x00, 0x00, // reserved
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0x00, 0x00, 0x00, 0x00, // reserved
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0x00, 0x00, 0x00, 0x00, // reserved
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mp4Helpers.typeBytes('one'), 0x00)))); // name
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moofWithTfdt =
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box('moof',
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box('mfhd',
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0x00, // version
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x04), // sequence_number
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box('traf',
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box('tfhd',
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0x00, // version
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0x00, 0x00, 0x3b, // flags
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0x00, 0x00, 0x00, 0x04, // track_ID = 4
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x01, // base_data_offset
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0x00, 0x00, 0x00, 0x02, // sample_description_index
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0x00, 0x00, 0x00, 0x03, // default_sample_duration,
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0x00, 0x00, 0x00, 0x04, // default_sample_size
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0x00, 0x00, 0x00, 0x05),
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box('tfdt',
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0x00, // version
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0x00, 0x00, 0x00, // flags
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0x01, 0x02, 0x03, 0x04), // baseMediaDecodeTime
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box('trun',
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0x00, // version
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0x00, 0x0f, 0x01, // flags: dataOffsetPresent, sampleDurationPresent,
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// sampleSizePresent, sampleFlagsPresent,
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// sampleCompositionTimeOffsetsPresent
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0x00, 0x00, 0x00, 0x02, // sample_count
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0x00, 0x00, 0x00, 0x00, // data_offset, no first_sample_flags
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// sample 1
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0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
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0x00, 0x00, 0x00, 0x0a, // sample_size = 10
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0x00, 0x00, 0x00, 0x00, // sample_flags
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0x00, 0x00, 0x00, 0x0a, // signed sample_composition_time_offset = 10
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// sample 2
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0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
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0x00, 0x00, 0x00, 0x0a, // sample_size = 10
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0x00, 0x00, 0x00, 0x00, // sample_flags
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0x00, 0x00, 0x00, 0x14))); // signed sample_composition_time_offset = 20
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noTrunSamples =
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box('moof',
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box('mfhd',
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0x00, // version
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x04), // sequence_number
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box('traf',
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box('tfhd',
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0x00, // version
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0x00, 0x00, 0x3b, // flags
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0x00, 0x00, 0x00, 0x04, // track_ID = 4
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x01, // base_data_offset
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0x00, 0x00, 0x00, 0x02, // sample_description_index
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0x00, 0x00, 0x00, 0x03, // default_sample_duration,
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0x00, 0x00, 0x00, 0x04, // default_sample_size
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0x00, 0x00, 0x00, 0x05),
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box('tfdt',
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0x00, // version
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0x00, 0x00, 0x00, // flags
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0x01, 0x02, 0x03, 0x04), // baseMediaDecodeTime
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box('trun',
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0x00, // version
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0x00, 0x0f, 0x01, // flags: dataOffsetPresent, sampleDurationPresent,
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// sampleSizePresent, sampleFlagsPresent,
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// sampleCompositionTimeOffsetsPresent
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0x00, 0x00, 0x00, 0x00, // sample_count
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0x00, 0x00, 0x00, 0x00))); // data_offset, no first_sample_flags
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multiTraf =
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box('moof',
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box('mfhd',
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0x00, // version
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0x00, 0x00, 0x00, // flags
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0x00, 0x00, 0x00, 0x04), // sequence_number
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box('traf',
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box('tfhd',
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0x00, // version
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0x00, 0x00, 0x3b, // flags
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0x00, 0x00, 0x00, 0x04, // track_ID = 4
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0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x01, // base_data_offset
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0x00, 0x00, 0x00, 0x02, // sample_description_index
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0x00, 0x00, 0x00, 0x03, // default_sample_duration,
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0x00, 0x00, 0x00, 0x04, // default_sample_size
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0x00, 0x00, 0x00, 0x05),
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box('tfdt',
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0x00, // version
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0x00, 0x00, 0x00, // flags
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0x01, 0x02, 0x03, 0x04), // baseMediaDecodeTime
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box('trun',
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0x00, // version
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0x00, 0x0f, 0x01, // flags: dataOffsetPresent, sampleDurationPresent,
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// sampleSizePresent, sampleFlagsPresent,
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// sampleCompositionTimeOffsetsPresent
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0x00, 0x00, 0x00, 0x02, // sample_count
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0x00, 0x00, 0x00, 0x00, // data_offset, no first_sample_flags
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// sample 1
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0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
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0x00, 0x00, 0x00, 0x0a, // sample_size = 10
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0x00, 0x00, 0x00, 0x00, // sample_flags
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0x00, 0x00, 0x00, 0x0a, // signed sample_composition_time_offset = 10
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// sample 2
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0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
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0x00, 0x00, 0x00, 0x0a, // sample_size = 10
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0x00, 0x00, 0x00, 0x00, // sample_flags
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0x00, 0x00, 0x00, 0x14)), // signed sample_composition_time_offset = 20
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box('traf',
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box('tfhd',
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0x00, // version
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0x00, 0x00, 0x3b, // flags
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0x00, 0x00, 0x00, 0x02, // track_ID = 2
|
||
|
|
0x00, 0x00, 0x00, 0x00,
|
||
|
|
0x00, 0x00, 0x00, 0x01, // base_data_offset
|
||
|
|
0x00, 0x00, 0x00, 0x02, // sample_description_index
|
||
|
|
0x00, 0x00, 0x00, 0x03, // default_sample_duration,
|
||
|
|
0x00, 0x00, 0x00, 0x04, // default_sample_size
|
||
|
|
0x00, 0x00, 0x00, 0x05),
|
||
|
|
box('tfdt',
|
||
|
|
0x00, // version
|
||
|
|
0x00, 0x00, 0x00, // flags
|
||
|
|
0x01, 0x02, 0x01, 0x02), // baseMediaDecodeTime
|
||
|
|
box('trun',
|
||
|
|
0x00, // version
|
||
|
|
0x00, 0x0f, 0x01, // flags: dataOffsetPresent, sampleDurationPresent,
|
||
|
|
// sampleSizePresent, sampleFlagsPresent,
|
||
|
|
// sampleCompositionTimeOffsetsPresent
|
||
|
|
0x00, 0x00, 0x00, 0x02, // sample_count
|
||
|
|
0x00, 0x00, 0x00, 0x00, // data_offset, no first_sample_flags
|
||
|
|
// sample 1
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_size = 10
|
||
|
|
0x00, 0x00, 0x00, 0x00, // sample_flags
|
||
|
|
0x00, 0x00, 0x00, 0x0b, // signed sample_composition_time_offset = 11
|
||
|
|
// sample 2
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_size = 10
|
||
|
|
0x00, 0x00, 0x00, 0x00, // sample_flags
|
||
|
|
0x00, 0x00, 0x00, 0x05))); // signed sample_composition_time_offset = 5
|
||
|
|
|
||
|
|
multiMoof = moofWithTfdt
|
||
|
|
.concat(box('moof',
|
||
|
|
box('mfhd',
|
||
|
|
0x00, // version
|
||
|
|
0x00, 0x00, 0x00, // flags
|
||
|
|
0x00, 0x00, 0x00, 0x04), // sequence_number
|
||
|
|
box('traf',
|
||
|
|
box('tfhd',
|
||
|
|
0x00, // version
|
||
|
|
0x00, 0x00, 0x3b, // flags
|
||
|
|
0x00, 0x00, 0x00, 0x06, // track_ID = 6
|
||
|
|
0x00, 0x00, 0x00, 0x00,
|
||
|
|
0x00, 0x00, 0x00, 0x01, // base_data_offset
|
||
|
|
0x00, 0x00, 0x00, 0x02, // sample_description_index
|
||
|
|
0x00, 0x00, 0x00, 0x03, // default_sample_duration,
|
||
|
|
0x00, 0x00, 0x00, 0x04, // default_sample_size
|
||
|
|
0x00, 0x00, 0x00, 0x05),
|
||
|
|
box('tfdt',
|
||
|
|
0x00, // version
|
||
|
|
0x00, 0x00, 0x00, // flags
|
||
|
|
0x01, 0x02, 0x03, 0x04), // baseMediaDecodeTime
|
||
|
|
box('trun',
|
||
|
|
0x00, // version
|
||
|
|
0x00, 0x0f, 0x01, // flags: dataOffsetPresent, sampleDurationPresent,
|
||
|
|
// sampleSizePresent, sampleFlagsPresent,
|
||
|
|
// sampleCompositionTimeOffsetsPresent
|
||
|
|
0x00, 0x00, 0x00, 0x02, // sample_count
|
||
|
|
0x00, 0x00, 0x00, 0x00, // data_offset, no first_sample_flags
|
||
|
|
// sample 1
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_size = 10
|
||
|
|
0x00, 0x00, 0x00, 0x00, // sample_flags
|
||
|
|
0x00, 0x00, 0x00, 0x14, // signed sample_composition_time_offset = 20
|
||
|
|
// sample 2
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_duration = 10
|
||
|
|
0x00, 0x00, 0x00, 0x0a, // sample_size = 10
|
||
|
|
0x00, 0x00, 0x00, 0x00, // sample_flags
|
||
|
|
0x00, 0x00, 0x00, 0x0a)))); // signed sample_composition_time_offset = 10
|
||
|
|
v1boxes =
|
||
|
|
box('moof',
|
||
|
|
box('mfhd',
|
||
|
|
0x01, // version
|
||
|
|
0x00, 0x00, 0x00, // flags
|
||
|
|
0x00, 0x00, 0x00, 0x04), // sequence_number
|
||
|
|
box('traf',
|
||
|
|
box('tfhd',
|
||
|
|
0x01, // version
|
||
|
|
0x00, 0x00, 0x3b, // flags
|
||
|
|
0x00, 0x00, 0x00, 0x04, // track_ID = 4
|
||
|
|
0x00, 0x00, 0x00, 0x00,
|
||
|
|
0x00, 0x00, 0x00, 0x01, // base_data_offset
|
||
|
|
0x00, 0x00, 0x00, 0x02, // sample_description_index
|
||
|
|
0x00, 0x00, 0x00, 0x03, // default_sample_duration,
|
||
|
|
0x00, 0x00, 0x00, 0x04, // default_sample_size
|
||
|
|
0x00, 0x00, 0x00, 0x05),
|
||
|
|
box('tfdt',
|
||
|
|
0x01, // version
|
||
|
|
0x00, 0x00, 0x00, // flags
|
||
|
|
0x00, 0x00, 0x00, 0x01,
|
||
|
|
0x01, 0x02, 0x03, 0x04))); // baseMediaDecodeTime
|