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[#156] fix: DASH content protection schemeIdUri as lowercase #157

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merged 4 commits into from
Apr 4, 2022
Merged

[#156] fix: DASH content protection schemeIdUri as lowercase #157

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023bc5e
[#156] fix: DASH content protection schemeIdUri as lowercase
mhk-etn Mar 8, 2022
ac8c125
[#156] Updated imports to es version in test/inheritAttributes.test.js
mhk-etn Mar 8, 2022
398ad78
[#156] Reverted changelog changes as it is automatically generated
mhk-etn Mar 8, 2022
2d35fb4
[#156] Added comment explanation for schemeIdUri lowercase conversion
mhk-etn Apr 3, 2022
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11 changes: 9 additions & 2 deletions src/inheritAttributes.js
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Original file line number Diff line number Diff line change
Expand Up @@ -175,6 +175,14 @@ export const inheritBaseUrls =
const generateKeySystemInformation = (contentProtectionNodes) => {
return contentProtectionNodes.reduce((acc, node) => {
const attributes = parseAttributes(node);

// Although it could be argued that according to the UUID RFC spec the UUID string (a-f chars) should be generated
// as a lowercase string it also mentions it should be treated as case-insensitive on input. Since the key system
// UUIDs in the keySystemsMap are hardcoded as lowercase in the codebase there isn't any reason not to do
// .toLowerCase() on the input UUID string from the manifest (at least I could not think of one).
if (attributes.schemeIdUri) {
attributes.schemeIdUri = attributes.schemeIdUri.toLowerCase();
}
const keySystem = keySystemsMap[attributes.schemeIdUri];

if (keySystem) {
Expand All @@ -184,9 +192,8 @@ const generateKeySystemInformation = (contentProtectionNodes) => {

if (psshNode) {
const pssh = getContent(psshNode);
const psshBuffer = pssh && decodeB64ToUint8Array(pssh);

acc[keySystem].pssh = psshBuffer;
acc[keySystem].pssh = pssh && decodeB64ToUint8Array(pssh);
}
}

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173 changes: 173 additions & 0 deletions test/inheritAttributes.test.js
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Expand Up @@ -9,6 +9,7 @@ import { stringToMpdXml } from '../src/stringToMpdXml';
import errors from '../src/errors';
import QUnit from 'qunit';
import { toPlaylists } from '../src/toPlaylists';
import decodeB64ToUint8Array from '@videojs/vhs-utils/es/decode-b64-to-uint8-array';

QUnit.module('buildBaseUrls');

Expand Down Expand Up @@ -2065,3 +2066,175 @@ QUnit.test('Test to check use of either Segment Template or Segment List when bo
assert.equal(actual.length, 1);
assert.deepEqual(actual, expected);
});

QUnit.test('keySystem info for representation - lowercase UUIDs', function(assert) {
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thanks for writing tests!

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No problem. I was wondering how thorough I should have been (all available keySystems, empty ContentProtection xml segment etc,,,)

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I think this is good enough.

const NOW = Date.now();

const widevinePsshB64 = 'AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARIQCHJ4bvnnRl+jok5bDvj6RQ==';
const playreadyPsshB64 = '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';

const widevinePsshBytes = decodeB64ToUint8Array(widevinePsshB64);
const playreadyPsshBytes = decodeB64ToUint8Array(playreadyPsshB64);

// Content protection info from dash.js demo
const actual = inheritAttributes(stringToMpdXml(`
<MPD mediaPresentationDuration="PT30S" xmlns:cenc="urn:mpeg:cenc:2013">
<BaseURL>https://www.example.com/base/</BaseURL>
<Period>
<AdaptationSet mimeType="video/mp4" >
<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="0872786e-f9e7-465f-a3a2-4e5b0ef8fa45" />
<ContentProtection value="MSPR 2.0" schemeIdUri="urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95">
<cenc:pssh>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</cenc:pssh>
<pro xmlns="urn:microsoft:playready">xAEAAAEAAQC6ATwAVwBSAE0ASABFAEEARABFAFIAIAB4AG0AbABuAHMAPQAiAGgAdAB0AHAAOgAvAC8AcwBjAGgAZQBtAGEAcwAuAG0AaQBjAHIAbwBzAG8AZgB0AC4AYwBvAG0ALwBEAFIATQAvADIAMAAwADcALwAwADMALwBQAGwAYQB5AFIAZQBhAGQAeQBIAGUAYQBkAGUAcgAiACAAdgBlAHIAcwBpAG8AbgA9ACIANAAuADAALgAwAC4AMAAiAD4APABEAEEAVABBAD4APABQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsARQBZAEwARQBOAD4AMQA2ADwALwBLAEUAWQBMAEUATgA+ADwAQQBMAEcASQBEAD4AQQBFAFMAQwBUAFIAPAAvAEEATABHAEkARAA+ADwALwBQAFIATwBUAEUAQwBUAEkATgBGAE8APgA8AEsASQBEAD4AYgBuAGgAeQBDAE8AZgA1AFgAMABhAGoAbwBrADUAYgBEAHYAagA2AFIAUQA9AD0APAAvAEsASQBEAD4APAAvAEQAQQBUAEEAPgA8AC8AVwBSAE0ASABFAEEARABFAFIAPgA=</pro>
</ContentProtection>
<ContentProtection value="Widevine" schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
<cenc:pssh>AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARIQCHJ4bvnnRl+jok5bDvj6RQ==</cenc:pssh>
</ContentProtection>
<Role value="main"></Role>
<SegmentTemplate></SegmentTemplate>
<Representation
bandwidth="5000000"
codecs="avc1.64001e"
height="404"
id="test"
width="720">
</Representation>
</AdaptationSet>
</Period>
</MPD>
`), { NOW });

// inconsistent quoting because of quote-props
const expected = {
locations: undefined,
representationInfo: [{
attributes: {
'bandwidth': 5000000,
'baseUrl': 'https://www.example.com/base/',
'codecs': 'avc1.64001e',
'contentProtection': {
'com.microsoft.playready': {
attributes: {
schemeIdUri: 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95',
value: 'MSPR 2.0'
},
pssh: playreadyPsshBytes
},
'com.widevine.alpha': {
attributes: {
schemeIdUri: 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed',
value: 'Widevine'
},
pssh: widevinePsshBytes
}
},
'height': 404,
'id': 'test',
'mediaPresentationDuration': 30,
'mimeType': 'video/mp4',
'periodStart': 0,
'role': {
value: 'main'
},
'sourceDuration': 30,
'type': 'static',
'width': 720,
NOW,
'clientOffset': 0,
'xmlns:cenc': 'urn:mpeg:cenc:2013'
},
segmentInfo: {
template: {}
}
}]
};

assert.equal(actual.representationInfo.length, 1);
assert.deepEqual(actual, expected);
});

QUnit.test('keySystem info for representation - uppercase UUIDs', function(assert) {
const NOW = Date.now();

const widevinePsshB64 = 'AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARIQCHJ4bvnnRl+jok5bDvj6RQ==';
const playreadyPsshB64 = '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';

const widevinePsshBytes = decodeB64ToUint8Array(widevinePsshB64);
const playreadyPsshBytes = decodeB64ToUint8Array(playreadyPsshB64);

// Content protection info from dash.js demo
const actual = inheritAttributes(stringToMpdXml(`
<MPD mediaPresentationDuration="PT30S" xmlns:cenc="urn:mpeg:cenc:2013">
<BaseURL>https://www.example.com/base/</BaseURL>
<Period>
<AdaptationSet mimeType="video/mp4" >
<ContentProtection schemeIdUri="urn:mpeg:dash:mp4protection:2011" value="cenc" cenc:default_KID="0872786E-F9E7-465F-A3A2-4E5B0EF8FA45" />
<ContentProtection value="MSPR 2.0" schemeIdUri="urn:uuid:9A04F079-9840-4286-AB92-E65BE0885F95">
<cenc:pssh>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</cenc:pssh>
<pro xmlns="urn:microsoft:playready">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</pro>
</ContentProtection>
<ContentProtection value="Widevine" schemeIdUri="urn:uuid:EDEF8BA9-79D6-4ACE-A3C8-27DCD51D21ED">
<cenc:pssh>AAAANHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAABQIARIQCHJ4bvnnRl+jok5bDvj6RQ==</cenc:pssh>
</ContentProtection>
<Role value="main"></Role>
<SegmentTemplate></SegmentTemplate>
<Representation
bandwidth="5000000"
codecs="avc1.64001e"
height="404"
id="test"
width="720">
</Representation>
</AdaptationSet>
</Period>
</MPD>
`), { NOW });

// inconsistent quoting because of quote-props
const expected = {
locations: undefined,
representationInfo: [{
attributes: {
'bandwidth': 5000000,
'baseUrl': 'https://www.example.com/base/',
'codecs': 'avc1.64001e',
'contentProtection': {
'com.microsoft.playready': {
attributes: {
schemeIdUri: 'urn:uuid:9a04f079-9840-4286-ab92-e65be0885f95',
value: 'MSPR 2.0'
},
pssh: playreadyPsshBytes
},
'com.widevine.alpha': {
attributes: {
schemeIdUri: 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed',
value: 'Widevine'
},
pssh: widevinePsshBytes
}
},
'height': 404,
'id': 'test',
'mediaPresentationDuration': 30,
'mimeType': 'video/mp4',
'periodStart': 0,
'role': {
value: 'main'
},
'sourceDuration': 30,
'type': 'static',
'width': 720,
NOW,
'clientOffset': 0,
'xmlns:cenc': 'urn:mpeg:cenc:2013'
},
segmentInfo: {
template: {}
}
}]
};

assert.equal(actual.representationInfo.length, 1);
assert.deepEqual(actual, expected);
});