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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#ifndef RTCStatsReport_h_
#define RTCStatsReport_h_
#include "nsWrapperCache.h"
#include "nsCOMPtr.h"
#include "nsPIDOMWindow.h" // nsPIDOMWindowInner
#include "mozilla/dom/ScriptSettings.h" // AutoEntryScript
#include "nsIGlobalObject.h"
#include "js/RootingAPI.h" // JS::Rooted
#include "js/Value.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/UniquePtr.h"
#include "prtime.h" // PR_Now
#include "mozilla/MozPromise.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/dom/RTCStatsReportBinding.h" // RTCStatsCollection
namespace mozilla {
namespace dom {
class RTCStatsTimestampMaker {
public:
RTCStatsTimestampMaker() = default;
explicit RTCStatsTimestampMaker(const GlobalObject* aGlobal);
DOMHighResTimeStamp GetNow() const;
private:
uint64_t mRandomTimelineSeed = 0;
DOMHighResTimeStamp mStartWallClockRaw = (double)PR_Now() / PR_USEC_PER_MSEC;
TimeStamp mStartMonotonic = TimeStamp::NowUnfuzzed();
bool mCrossOriginIsolated = false;
};
// TODO(bug 1588303): If we ever get move semantics for webidl dictionaries, we
// can stop wrapping these in UniquePtr, which will allow us to simplify code
// in several places.
typedef MozPromise<UniquePtr<RTCStatsCollection>, nsresult, true>
RTCStatsPromise;
typedef MozPromise<UniquePtr<RTCStatsReportInternal>, nsresult, true>
RTCStatsReportPromise;
class RTCStatsReport final : public nsWrapperCache {
public:
NS_INLINE_DECL_CYCLE_COLLECTING_NATIVE_REFCOUNTING(RTCStatsReport)
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_NATIVE_CLASS(RTCStatsReport)
explicit RTCStatsReport(nsPIDOMWindowInner* aParent);
// TODO(bug 1586109): Remove this once we no longer have to create empty
// RTCStatsReports from JS.
static already_AddRefed<RTCStatsReport> Constructor(
const GlobalObject& aGlobal);
void Incorporate(RTCStatsCollection& aStats);
nsPIDOMWindowInner* GetParentObject() const { return mParent; }
JSObject* WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) override;
private:
~RTCStatsReport() = default;
void Set(const nsAString& aKey, JS::Handle<JSObject*> aValue,
ErrorResult& aRv);
template <typename T>
nsresult SetRTCStats(Sequence<T>& aValues) {
for (T& value : aValues) {
nsresult rv = SetRTCStats(value);
if (NS_FAILED(rv)) {
return rv;
}
}
return NS_OK;
}
// We cannot just declare this as SetRTCStats(RTCStats&), because the
// conversion function that ToJSValue uses is non-virtual.
template <typename T>
nsresult SetRTCStats(T& aValue) {
static_assert(std::is_base_of<RTCStats, T>::value,
"SetRTCStats is for setting RTCStats only");
if (!aValue.mId.WasPassed()) {
return NS_OK;
}
const nsString key(aValue.mId.Value());
// Cargo-culted from dom::Promise; converts aValue to a JSObject
AutoEntryScript aes(mParent->AsGlobal()->GetGlobalJSObject(),
"RTCStatsReport::SetRTCStats");
JSContext* cx = aes.cx();
JS::Rooted<JS::Value> val(cx);
if (!ToJSValue(cx, std::forward<T>(aValue), &val)) {
return NS_ERROR_FAILURE;
}
JS::Rooted<JSObject*> jsObject(cx, &val.toObject());
ErrorResult rv;
Set(key, jsObject, rv);
return rv.StealNSResult();
}
nsCOMPtr<nsPIDOMWindowInner> mParent;
};
} // namespace dom
} // namespace mozilla
#endif // RTCStatsReport_h_
|
