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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /dom/media/eme/MediaKeyStatusMap.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/eme/MediaKeyStatusMap.h')
-rw-r--r--dom/media/eme/MediaKeyStatusMap.h97
1 files changed, 97 insertions, 0 deletions
diff --git a/dom/media/eme/MediaKeyStatusMap.h b/dom/media/eme/MediaKeyStatusMap.h
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+/* -*- 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 nsPIDOMWindowInner;
+
+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(nsPIDOMWindowInner* aParent);
+
+protected:
+ ~MediaKeyStatusMap();
+
+public:
+ nsPIDOMWindowInner* GetParentObject() const;
+
+ JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+ void Get(JSContext* aCx,
+ const ArrayBufferViewOrArrayBuffer& aKey,
+ JS::MutableHandle<JS::Value> aOutValue,
+ ErrorResult& aOutRv) 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<nsPIDOMWindowInner> 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