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