mp4-inspector_test.js
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(function(window, videojs) {
'use strict';
/*
======== A Handy Little QUnit Reference ========
http://api.qunitjs.com/
Test methods:
module(name, {[setup][ ,teardown]})
test(name, callback)
expect(numberOfAssertions)
stop(increment)
start(decrement)
Test assertions:
ok(value, [message])
equal(actual, expected, [message])
notEqual(actual, expected, [message])
deepEqual(actual, expected, [message])
notDeepEqual(actual, expected, [message])
strictEqual(actual, expected, [message])
notStrictEqual(actual, expected, [message])
throws(block, [expected], [message])
*/
var
Uint8Array = window.Uint8Array,
typeBytes = function(type) {
return [
type.charCodeAt(0),
type.charCodeAt(1),
type.charCodeAt(2),
type.charCodeAt(3)
];
},
box = function(type) {
var
array = Array.prototype.slice.call(arguments, 1),
result = [],
size,
i;
// "unwrap" any arrays that were passed as arguments
// e.g. box('etc', 1, [2, 3], 4) -> box('etc', 1, 2, 3, 4)
for (i = 0; i < array.length; i++) {
if (array[i] instanceof Array) {
array.splice.apply(array, [i, 1].concat(array[i]));
}
}
size = 8 + array.length;
result[0] = (size & 0xFF000000) >> 24;
result[1] = (size & 0x00FF0000) >> 16;
result[2] = (size & 0x0000FF00) >> 8;
result[3] = size & 0xFF;
result = result.concat(typeBytes(type));
result = result.concat(array);
return result;
},
unityMatrix = [
0, 0, 0x10, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0x10, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0x40, 0, 0, 0
],
mvhd0 = box('mvhd',
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // creation_time
0x00, 0x00, 0x00, 0x02, // modification_time
0x00, 0x00, 0x00, 0x3c, // timescale
0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
0x00, 0x01, 0x00, 0x00, // 1.0 rate
0x01, 0x00, // 1.0 volume
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
unityMatrix,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // pre_defined
0x00, 0x00, 0x00, 0x02),
tkhd0 = box('tkhd',
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x03, // modification_time
0x00, 0x00, 0x00, 0x01, // track_ID
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, // layer
0x00, 0x00, // alternate_group
0x00, 0x00, // non-audio track volume
0x00, 0x00, // reserved
unityMatrix,
0x01, 0x2c, 0x00, 0x00, // 300 in 16.16 fixed point
0x00, 0x96, 0x00, 0x00), // 150 in 16.16 fixed point
mdhd0 = box('mdhd',
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x03, // modification_time
0x00, 0x00, 0x00, 0x3c, // timescale
0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
0x15, 0xc7, // 'eng' language
0x00, 0x00);
module('MP4 Inspector');
test('produces an empty array for empty input', function() {
strictEqual(videojs.inspectMp4(new Uint8Array([])).length, 0, 'returned an empty array');
});
test('can parse a Box', function() {
var box = new Uint8Array([
0x00, 0x00, 0x00, 0x00, // size 0
0x00, 0x00, 0x00, 0x00 // boxtype 0
]);
deepEqual(videojs.inspectMp4(box), [{
type: '\u0000\u0000\u0000\u0000',
size: 0,
data: box.subarray(box.byteLength)
}], 'parsed a Box');
});
test('can parse an ftyp', function() {
deepEqual(videojs.inspectMp4(new Uint8Array(box('ftyp',
0x61, 0x76, 0x63, 0x31, // major brand
0x00, 0x00, 0x00, 0x02, // minor version
0x00, 0x00, 0x00, 0x03, // compatible brands
0x00, 0x00, 0x00, 0x04 // compatible brands
))), [{
type: 'ftyp',
size: 4 * 6,
majorBrand: 'avc1',
minorVersion: 2,
compatibleBrands: [3, 4]
}], 'parsed an ftyp');
});
test('can parse a pdin', function() {
deepEqual(videojs.inspectMp4(new Uint8Array(box('pdin',
0x01, // version 1
0x01, 0x02, 0x03, // flags
0x00, 0x00, 0x04, 0x00, // 1024 = 0x400 bytes/second rate
0x00, 0x00, 0x00, 0x01 // initial delay
))), [{
size: 20,
type: 'pdin',
version: 1,
flags: new Uint8Array([1, 2, 3]),
rate: 1024,
initialDelay: 1
}], 'parsed a pdin');
});
test('can parse an mdat', function() {
var mdat = new Uint8Array(box('mdat',
0x01, 0x02, 0x03, 0x04 // data
));
deepEqual(videojs.inspectMp4(mdat), [{
size: 12,
type: 'mdat',
byteLength: 4
}], 'parsed an mdat');
});
test('can parse a free or skip', function() {
var
free = new Uint8Array(box('free',
0x01, 0x02, 0x03, 0x04)), // data
skip = new Uint8Array(box('skip',
0x01, 0x02, 0x03, 0x04)); // data
deepEqual(videojs.inspectMp4(free), [{
size: 12,
type: 'free',
data: free.subarray(free.byteLength - 4)
}], 'parsed a free');
deepEqual(videojs.inspectMp4(skip), [{
size: 12,
type: 'skip',
data: skip.subarray(skip.byteLength - 4)
}], 'parsed a skip');
});
test('can parse a version 0 mvhd', function() {
deepEqual(videojs.inspectMp4(new Uint8Array(mvhd0)), [{
type: 'mvhd',
version: 0,
flags: new Uint8Array([0, 0, 0]),
creationTime: new Date(1000 - 2082844800000),
modificationTime: new Date(2000 - 2082844800000),
timescale: 60,
duration: 600,
rate: 1,
volume: 1,
matrix: new Uint32Array(unityMatrix),
size: 108,
nextTrackId: 2
}]);
});
test('can parse a version 0 tkhd', function() {
deepEqual(videojs.inspectMp4(new Uint8Array(tkhd0)), [{
type: 'tkhd',
version: 0,
flags: new Uint8Array([0, 0, 0]),
creationTime: new Date(2000 - 2082844800000),
modificationTime: new Date(3000 - 2082844800000),
size: 92,
trackId: 1,
duration: 600,
layer: 0,
alternateGroup: 0,
volume: 0,
matrix: new Uint32Array(unityMatrix),
width: 300,
height: 150
}]);
});
test('can parse a version 0 mdhd', function() {
deepEqual(videojs.inspectMp4(new Uint8Array(mdhd0)), [{
type: 'mdhd',
version: 0,
flags: new Uint8Array([0, 0, 0]),
creationTime: new Date(2000 - 2082844800000),
modificationTime: new Date(3000 - 2082844800000),
size: 32,
timescale: 60,
duration: 600,
language: 'eng'
}]);
});
test('can parse a moov', function() {
var data =
box('moov',
box('mvhd',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x01, // creation_time
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x02, // modification_time
0x00, 0x00, 0x00, 0x3c, // timescale
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
0x00, 0x01, 0x00, 0x00, // 1.0 rate
0x01, 0x00, // 1.0 volume
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
unityMatrix,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // pre_defined
0x00, 0x00, 0x00, 0x02), // next_track_ID
box('trak',
box('tkhd',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03, // modification_time
0x00, 0x00, 0x00, 0x01, // track_ID
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, // layer
0x00, 0x00, // alternate_group
0x00, 0x00, // non-audio track volume
0x00, 0x00, // reserved
unityMatrix,
0x01, 0x2c, 0x00, 0x00, // 300 in 16.16 fixed-point
0x00, 0x96, 0x00, 0x00), // 150 in 16.16 fixed-point
box('mdia',
box('mdhd',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x03, // modification_time
0x00, 0x00, 0x00, 0x3c, // timescale
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x02, 0x58, // 600 = 0x258 duration
0x15, 0xc7, // 'eng' language
0x00, 0x00),
box('hdlr',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // pre_defined
typeBytes('vide'), // handler_type
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
typeBytes('one'), 0x00), // name
box('minf',
box('dinf',
box('dref',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // entry_count
box('url ',
0x00, // version
0x00, 0x00, 0x01))), // flags
box('stbl',
box('stsd',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00), // entry_count
box('stts',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // entry_count
0x00, 0x00, 0x00, 0x01, // sample_count
0x00, 0x00, 0x00, 0x01), // sample_delta
box('stsc',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // entry_count
0x00, 0x00, 0x00, 0x02, // first_chunk
0x00, 0x00, 0x00, 0x03, // samples_per_chunk
0x00, 0x00, 0x00, 0x01), // sample_description_index
box('stco',
0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // entry_count
0x00, 0x00, 0x00, 0x01)))))); // chunk_offset
deepEqual(videojs.inspectMp4(new Uint8Array(data)), [{
type: 'moov',
size: 469,
boxes: [{
type: 'mvhd',
version: 1,
flags: new Uint8Array([0, 0, 0]),
creationTime: new Date(1000 - 2082844800000),
modificationTime: new Date(2000 - 2082844800000),
timescale: 60,
duration: 600,
rate: 1,
size: 120,
volume: 1,
matrix: new Uint32Array(unityMatrix),
nextTrackId: 2
}, {
type: 'trak',
size: 341,
boxes: [{
type: 'tkhd',
flags: new Uint8Array([0, 0, 0]),
version: 1,
creationTime: new Date(2000 - 2082844800000),
modificationTime: new Date(3000 - 2082844800000),
size: 104,
trackId: 1,
duration: 600,
layer: 0,
alternateGroup: 0,
volume: 0,
matrix: new Uint32Array(unityMatrix),
width: 300,
height: 150
}, {
type: 'mdia',
size: 229,
boxes: [{
type: 'mdhd',
version: 1,
flags: new Uint8Array([0, 0, 0]),
creationTime: new Date(2000 - 2082844800000),
modificationTime: new Date(3000 - 2082844800000),
timescale: 60,
duration: 600,
language: 'eng',
size: 44
}, {
type: 'hdlr',
version: 1,
flags: new Uint8Array([0, 0, 0]),
handlerType: 'vide',
name: 'one',
size: 37
}, {
type: 'minf',
size: 140,
boxes: [{
type: 'dinf',
size: 36,
boxes: [{
type: 'dref',
size: 28,
version: 1,
flags: new Uint8Array([0, 0, 0]),
dataReferences: [{
type: 'url ',
size: 12,
version: 0,
flags: new Uint8Array([0, 0, 1])
}],
}]
}, {
type: 'stbl',
size: 96,
boxes: [{
type: 'stsd',
size: 16,
version: 1,
flags: new Uint8Array([0, 0, 0]),
sampleDescriptions: [],
}, {
type: 'stts',
size: 24,
version: 1,
flags: new Uint8Array([0, 0, 0]),
timeToSamples: [{
sampleCount: 1,
sampleDelta: 1
}]
}, {
type: 'stsc',
version: 1,
flags: new Uint8Array([0, 0, 0]),
sampleToChunks: [{
firstChunk: 2,
samplesPerChunk: 3,
sampleDescriptionIndex: 1
}],
size: 28
}, {
type: 'stco',
size: 20,
version: 1,
flags: new Uint8Array([0, 0, 0]),
chunkOffsets: [1]
}]
}]
}]
}]
}]
}], 'parsed a moov');
});
test('can parse an mvex', function() {
var mvex =
box('mvex',
box('trex',
0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // track_ID
0x00, 0x00, 0x00, 0x01, // default_sample_description_index
0x00, 0x00, 0x00, 0x02, // default_sample_duration
0x00, 0x00, 0x00, 0x03, // default_sample_size
0x00, 0x61, 0x00, 0x01)); // default_sample_flags
deepEqual(videojs.inspectMp4(new Uint8Array(mvex)), [{
type: 'mvex',
size: 40,
boxes: [{
type: 'trex',
size: 32,
version: 0,
flags: new Uint8Array([0, 0, 0]),
trackId: 1,
defaultSampleDescriptionIndex: 1,
defaultSampleDuration: 2,
defaultSampleSize: 3,
sampleDependsOn: 0,
sampleIsDependedOn: 1,
sampleHasRedundancy: 2,
samplePaddingValue: 0,
sampleIsDifferenceSample: true,
sampleDegradationPriority: 1
}]
}], 'parsed an mvex');
});
test('can parse a video stsd', function() {
var data = box('stsd',
0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01,
box('avc1',
0x00, 0x00, 0x00,
0x00, 0x00, 0x00, // reserved
0x00, 0x01, // data_reference_index
0x00, 0x00, // pre_defined
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, // pre_defined
0x01, 0x2c, // width = 300
0x00, 0x96, // height = 150
0x00, 0x48, 0x00, 0x00, // horizresolution
0x00, 0x48, 0x00, 0x00, // vertresolution
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x01, // frame_count
0x04,
typeBytes('avc1'),
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, // compressorname
0x00, 0x18, // depth = 24
0x11, 0x11, // pre_defined
box('avcC',
0x01, // configurationVersion
0x00, // AVCProfileIndication??
0x00, // profile_compatibility
0x00, // AVCLevelIndication
0x1c, // lengthSizeMinusOne
0xe1, // numOfSequenceParameterSets
0x00, 0x01, // sequenceParameterSetLength
0x00, // "SPS"
0x02, // numOfPictureParameterSets
0x00, 0x02, // pictureParameterSetLength
0x01, 0x02, // "PPS"
0x00, 0x01, // pictureParameterSetLength
0xff), // "PPS"
box('btrt',
0x00, 0x00, 0x00, 0x00, // bufferSizeDB
0x00, 0x00, 0x00, 0x01, // maxBitrate
0x00, 0x00, 0x00, 0x01))); // avgBitrate
deepEqual(videojs.inspectMp4(new Uint8Array(data)), [{
type: 'stsd',
size: 147,
version: 0,
flags: new Uint8Array([0, 0, 0]),
sampleDescriptions: [{
type: 'avc1',
size: 131,
dataReferenceIndex: 1,
width: 300,
height: 150,
horizresolution: 72,
vertresolution: 72,
frameCount: 1,
depth: 24,
config: [{
type: 'avcC',
size: 25,
configurationVersion: 1,
avcProfileIndication: 0,
profileCompatibility: 0,
avcLevelIndication: 0,
lengthSizeMinusOne: 0,
sps: [new Uint8Array(1)],
pps: [new Uint8Array([1, 2]),
new Uint8Array([0xff])]
}, {
type: 'btrt',
size: 20,
bufferSizeDB: 0,
maxBitrate: 1,
avgBitrate: 1
}]
}]
}]);
});
test('can parse a vmhd', function() {
var data = box('vmhd',
0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, // graphicsmode
0x00, 0x00,
0x00, 0x00,
0x00, 0x00); // opcolor
deepEqual(videojs.inspectMp4(new Uint8Array(data)),
[{
type: 'vmhd',
size: 20,
version: 0,
flags: new Uint8Array([0, 0, 0]),
graphicsmode: 0,
opcolor: new Uint16Array([0, 0, 0])
}]);
});
test('can parse an stsz', function() {
var data = box('stsz',
0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // sample_size
0x00, 0x00, 0x00, 0x03, // sample_count
0x00, 0x00, 0x00, 0x01, // entry_size
0x00, 0x00, 0x00, 0x02, // entry_size
0x00, 0x00, 0x00, 0x03); // entry_size
deepEqual(videojs.inspectMp4(new Uint8Array(data)),
[{
type: 'stsz',
size: 32,
version: 0,
flags: new Uint8Array([0, 0, 0]),
sampleSize: 0,
entries: [1, 2, 3]
}]);
});
test('can parse a moof', function() {
var data = 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, 0x01, // track_ID
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))); // default_sample_flags
deepEqual(videojs.inspectMp4(new Uint8Array(data)),
[{
type: 'moof',
size: 72,
boxes: [{
type: 'mfhd',
size: 16,
version: 0,
flags: new Uint8Array([0, 0, 0]),
sequenceNumber: 4
},
{
type: 'traf',
size: 48,
boxes: [{
type: 'tfhd',
version: 0,
size: 40,
flags: new Uint8Array([0, 0, 0x3b]),
trackId: 1,
baseDataOffset: 1,
sampleDescriptionIndex: 2,
defaultSampleDuration: 3,
defaultSampleSize: 4,
defaultSampleFlags: 5
}]
}]
}]);
});
test('can parse a trun', function() {
var data = box('trun',
0x00, // version
0x00, 0x0b, 0x05, // flags
0x00, 0x00, 0x00, 0x02, // sample_count
0x00, 0x00, 0x00, 0x01, // data_offset
0x01, 0x02, 0x03, 0x04, // first_sample_flags
0x00, 0x00, 0x00, 0x09, // sample_duration
0x00, 0x00, 0x00, 0xff, // sample_size
0x00, 0x00, 0x00, 0x00, // sample_composition_time_offset
0x00, 0x00, 0x00, 0x08, // sample_duration
0x00, 0x00, 0x00, 0xfe, // sample_size
0x00, 0x00, 0x00, 0x00); // sample_composition_time_offset
deepEqual(videojs.inspectMp4(new Uint8Array(data)),
[{
type: 'trun',
version: 0,
size: 48,
flags: new Uint8Array([0, 0x0b, 0x05]),
dataOffset: 1,
samples: [{
duration: 9,
size: 0xff,
flags: 0x01020304,
compositionTimeOffset: 0
}, {
duration: 8,
size: 0xfe,
compositionTimeOffset: 0
}]
}]);
});
test('can parse a series of boxes', function() {
var ftyp = [
0x00, 0x00, 0x00, 0x18 // size 4 * 6 = 24
].concat(typeBytes('ftyp')).concat([
0x69, 0x73, 0x6f, 0x6d, // major brand
0x00, 0x00, 0x00, 0x02, // minor version
0x00, 0x00, 0x00, 0x03, // compatible brands
0x00, 0x00, 0x00, 0x04, // compatible brands
]);
deepEqual(videojs.inspectMp4(new Uint8Array(ftyp.concat(ftyp))),
[{
type: 'ftyp',
size: 4 * 6,
majorBrand: 'isom',
minorVersion: 2,
compatibleBrands: [3, 4]
},{
type: 'ftyp',
size: 4 * 6,
majorBrand: 'isom',
minorVersion: 2,
compatibleBrands: [3, 4]
}],
'parsed two boxes in series');
});
})(window, window.videojs);