mirror of
https://github.com/classilla/tenfourfox.git
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95 lines
2.7 KiB
C++
95 lines
2.7 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_MediaKeyStatuses_h
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#define mozilla_dom_MediaKeyStatuses_h
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#include "mozilla/ErrorResult.h"
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#include "mozilla/Attributes.h"
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#include "nsCycleCollectionParticipant.h"
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#include "nsWrapperCache.h"
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#include "mozilla/dom/TypedArray.h"
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#include "mozilla/dom/MediaKeyStatusMapBinding.h"
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#include "mozilla/CDMCaps.h"
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class nsPIDOMWindow;
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namespace mozilla {
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namespace dom {
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class ArrayBufferViewOrArrayBuffer;
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// The MediaKeyStatusMap WebIDL interface; maps a keyId to its status.
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// Note that the underlying "map" is stored in an array, since we assume
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// that a MediaKeySession won't have many key statuses to report.
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class MediaKeyStatusMap final : public nsISupports,
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public nsWrapperCache
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{
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public:
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(MediaKeyStatusMap)
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public:
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explicit MediaKeyStatusMap(nsPIDOMWindow* aParent);
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protected:
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~MediaKeyStatusMap();
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public:
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nsPIDOMWindow* GetParentObject() const;
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virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
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MediaKeyStatus Get(const ArrayBufferViewOrArrayBuffer& aKey) const;
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bool Has(const ArrayBufferViewOrArrayBuffer& aKey) const;
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uint32_t Size() const;
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uint32_t GetIterableLength() const;
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TypedArrayCreator<ArrayBuffer> GetKeyAtIndex(uint32_t aIndex) const;
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MediaKeyStatus GetValueAtIndex(uint32_t aIndex) const;
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void Update(const nsTArray<CDMCaps::KeyStatus>& keys);
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private:
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nsCOMPtr<nsPIDOMWindow> mParent;
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struct KeyStatus {
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KeyStatus(const nsTArray<uint8_t>& aKeyId,
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MediaKeyStatus aStatus)
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: mKeyId(aKeyId)
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, mStatus(aStatus)
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{
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}
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bool operator== (const KeyStatus& aOther) const {
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return aOther.mKeyId == mKeyId;
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}
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bool operator<(const KeyStatus& aOther) const {
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// Copy chromium and compare keys' bytes.
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// Update once https://github.com/w3c/encrypted-media/issues/69
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// is resolved.
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const nsTArray<uint8_t>& other = aOther.mKeyId;
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const nsTArray<uint8_t>& self = mKeyId;
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size_t length = std::min<size_t>(other.Length(), self.Length());
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int cmp = memcmp(self.Elements(), other.Elements(), length);
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if (cmp != 0) {
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return cmp < 0;
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}
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return self.Length() <= other.Length();
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}
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nsTArray<uint8_t> mKeyId;
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MediaKeyStatus mStatus;
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};
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nsTArray<KeyStatus> mStatuses;
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};
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} // namespace dom
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} // namespace mozilla
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#endif
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