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