1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<html>
<head>
<title>Test multiple MediaKeys lifetimes</title>
<script src="encrypted-media-utils.js"></script>
<!--
Test requires Chromium specific content and is being disabled.
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
-->
</head>
<body>
<div id="log"></div>
<script>
// For this test, create several MediaKeys and verify lifetime.
async_test(function(test)
{
var mediaKeys;
var startingActiveDOMObjectCount = window.internals.activeDOMObjectCount(document);
function numActiveDOMObjectsCreated()
{
return window.internals.activeDOMObjectCount(document) - startingActiveDOMObjectCount;
}
// Create a MediaKeys object. Returns a promise that resolves
// with the new MediaKeys object.
function createMediaKeys()
{
return navigator.requestMediaKeySystemAccess('org.w3.clearkey', getSimpleConfiguration()).then(function(access) {
return access.createMediaKeys();
}).then(function(mediaKeys) {
return mediaKeys;
});
}
// Create a few MediaKeys objects. Only keep a reference to the
// last one created.
createMediaKeys().then(function(result) {
// Should be 1 MediaKeys.
// In non-Oilpan, numActiveDOMObjectsCreate() == 1.
// In Oilpan, numActiveDOMObjectsCreated() <= 4.
// (1 MediaKeysInitializer,
// 1 MediaKeySystemAccessInitializer (navigator.requestMediaKeySystemAccess() use above),
// 1 MediaKeySystemAccessInitializer (isInitDataSupported() (via getSupportedInitDataType())) and
// 1 ContentDecryptionModuleResultPromise).
assert_between_inclusive(numActiveDOMObjectsCreated(), 1, 4);
return createMediaKeys();
}).then(function(result) {
// Should be 2 MediaKeys.
// In non-Oilpan, numActiveDOMObjectsCreate() == 2.
// In Oilpan, numActiveDOMObjectsCreate() <= 8.
// (2 MediaKeysInitializer,
// 4 MediaKeySystemAccessInitializer and
// 2 ContentDecryptionModuleResultPromise).
assert_between_inclusive(numActiveDOMObjectsCreated(), 2, 8);
return createMediaKeys();
}).then(function(result) {
// Should be 3 MediaKeys.
// In non-Oilpan, numActiveDOMObjectsCreate() == 3.
// In Oilpan, numActiveDOMObjectsCreate() <= 12.
// (3 MediaKeysInitializer,
// 6 MediaKeySystemAccessInitializer and
// 3 ContentDecryptionModuleResultPromise).
assert_between_inclusive(numActiveDOMObjectsCreated(), 3, 12);
return createMediaKeys();
}).then(function(result) {
// Should be 4 MediaKeys.
// In non-Oilpan, numActiveDOMObjectsCreate() == 4.
// In Oilpan, numActiveDOMObjectsCreate() <= 16.
// (4 MediaKeysInitializer,
// 8 MediaKeySystemAccessInitializer and
// 4 ContentDecryptionModuleResultPromise).
assert_between_inclusive(numActiveDOMObjectsCreated(), 4, 16);
return createMediaKeys();
}).then(function(result) {
// Should be 5 MediaKeys.
// In non-Oilpan, numActiveDOMObjectsCreate() == 5.
// In Oilpan, numActiveDOMObjectsCreate() <= 20.
// (5 MediaKeysInitializer,
// 10 MediaKeySystemAccessInitializer and
// 5 ContentDecryptionModuleResultPromise).
assert_between_inclusive(numActiveDOMObjectsCreated(), 5, 20);
// |mediaKeys| refers to the most recently created MediaKeys
// object.
mediaKeys = result;
// In order for the MediaKey objects to be garbage
// collected, it needs time to process any pending events.
return delayToAllowEventProcessingPromise();
}).then(function(result) {
// In non-Oilpan, numActiveDOMObjectsCreated() == 5
// (5 MediaKeySession objects).
// In Oilpan, numActiveDOMObjectsCreated() <= 23
// (5 MediaKeysInitializer,
// 12 MediaKeySystemAccessInitializer,
// 5 ContentDecryptionModuleResultPromise and
// 1 DOMTimer (in delayToAllowEventProcessingPromise))
assert_between_inclusive(numActiveDOMObjectsCreated(), 5, 23);
// As we only have a reference (|mediaKeys|) to the last
// created MediaKeys object, the other 4 MediaKeys objects
// are available to be garbage collected.
return createGCPromise();
}).then(function(result) {
// Should be 1 MediaKeys and DOMTimer.
assert_less_than_equal(numActiveDOMObjectsCreated(), 2);
assert_equals(typeof mediaKeys.createSession, 'function');
// Release the last MediaKeys object created.
mediaKeys = null;
// Run gc() again to reclaim the remaining MediaKeys object.
return createGCPromise();
}).then(function(result) {
// Should be just a DOMTimer.
assert_less_than_equal(numActiveDOMObjectsCreated(), 1);
test.done();
}).catch(function(error) {
forceTestFailureFromPromise(test, error);
});
}, 'Multiple MediaKeys lifetime');
</script>
</body>
</html>
|
