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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/MediaKeys.h
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/eme/MediaKeys.h')
-rw-r--r--dom/media/eme/MediaKeys.h168
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diff --git a/dom/media/eme/MediaKeys.h b/dom/media/eme/MediaKeys.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_mediakeys_h__
+#define mozilla_dom_mediakeys_h__
+
+#include "nsWrapperCache.h"
+#include "nsISupports.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/RefPtr.h"
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsRefPtrHashtable.h"
+#include "mozilla/dom/Promise.h"
+#include "mozilla/dom/MediaKeysBinding.h"
+#include "mozilla/dom/MediaKeySystemAccessBinding.h"
+#include "mozIGeckoMediaPluginService.h"
+#include "mozilla/DetailedPromise.h"
+#include "mozilla/WeakPtr.h"
+
+namespace mozilla {
+
+class CDMProxy;
+
+namespace dom {
+
+class ArrayBufferViewOrArrayBuffer;
+class MediaKeySession;
+class HTMLMediaElement;
+
+typedef nsRefPtrHashtable<nsStringHashKey, MediaKeySession> KeySessionHashMap;
+typedef nsRefPtrHashtable<nsUint32HashKey, dom::DetailedPromise> PromiseHashMap;
+typedef nsRefPtrHashtable<nsUint32HashKey, MediaKeySession> PendingKeySessionsHashMap;
+typedef nsDataHashtable<nsUint32HashKey, uint32_t> PendingPromiseIdTokenHashMap;
+typedef uint32_t PromiseId;
+
+// This class is used on the main thread only.
+// Note: its addref/release is not (and can't be) thread safe!
+class MediaKeys final : public nsISupports,
+ public nsWrapperCache,
+ public SupportsWeakPtr<MediaKeys>
+{
+ ~MediaKeys();
+
+public:
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(MediaKeys)
+ MOZ_DECLARE_WEAKREFERENCE_TYPENAME(MediaKeys)
+
+ MediaKeys(nsPIDOMWindowInner* aParentWindow,
+ const nsAString& aKeySystem,
+ const MediaKeySystemConfiguration& aConfig);
+
+ already_AddRefed<DetailedPromise> Init(ErrorResult& aRv);
+
+ nsPIDOMWindowInner* GetParentObject() const;
+
+ JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+ nsresult Bind(HTMLMediaElement* aElement);
+ void Unbind();
+
+ // Javascript: readonly attribute DOMString keySystem;
+ void GetKeySystem(nsString& retval) const;
+
+ // JavaScript: MediaKeys.createSession()
+ already_AddRefed<MediaKeySession> CreateSession(JSContext* aCx,
+ MediaKeySessionType aSessionType,
+ ErrorResult& aRv);
+
+ // JavaScript: MediaKeys.SetServerCertificate()
+ already_AddRefed<DetailedPromise>
+ SetServerCertificate(const ArrayBufferViewOrArrayBuffer& aServerCertificate,
+ ErrorResult& aRv);
+
+ already_AddRefed<MediaKeySession> GetSession(const nsAString& aSessionId);
+
+ // Removes and returns MediaKeySession from the set of sessions awaiting
+ // their sessionId to be assigned.
+ already_AddRefed<MediaKeySession> GetPendingSession(uint32_t aToken);
+
+ // Called once a Init() operation succeeds.
+ void OnCDMCreated(PromiseId aId,
+ const nsACString& aNodeId, const uint32_t aPluginId);
+
+ // Called once the CDM generates a sessionId while servicing a
+ // MediaKeySession.generateRequest() or MediaKeySession.load() call,
+ // once the sessionId of a MediaKeySession is known.
+ void OnSessionIdReady(MediaKeySession* aSession);
+
+ // Called once a LoadSession succeeds.
+ void OnSessionLoaded(PromiseId aId, bool aSuccess);
+
+ // Called once a session has closed.
+ void OnSessionClosed(MediaKeySession* aSession);
+
+ CDMProxy* GetCDMProxy() { return mProxy; }
+
+ // Makes a new promise, or nullptr on failure.
+ already_AddRefed<DetailedPromise> MakePromise(ErrorResult& aRv,
+ const nsACString& aName);
+ // Stores promise in mPromises, returning an ID that can be used to retrieve
+ // it later. The ID is passed to the CDM, so that it can signal specific
+ // promises to be resolved.
+ PromiseId StorePromise(DetailedPromise* aPromise);
+
+ // Stores a map from promise id to pending session token. Using this
+ // mapping, when a promise is rejected via its ID, we can check if the
+ // promise corresponds to a pending session and retrieve that session
+ // via the mapped-to token, and remove the pending session from the
+ // list of sessions awaiting a session id.
+ void ConnectPendingPromiseIdWithToken(PromiseId aId, uint32_t aToken);
+
+ // Reject promise with DOMException corresponding to aExceptionCode.
+ void RejectPromise(PromiseId aId, nsresult aExceptionCode,
+ const nsCString& aReason);
+ // Resolves promise with "undefined".
+ void ResolvePromise(PromiseId aId);
+
+ const nsCString& GetNodeId() const;
+
+ void Shutdown();
+
+ // Called by CDMProxy when CDM crashes or shuts down. It is different from
+ // Shutdown which is called from the script/dom side.
+ void Terminated();
+
+ // Returns true if this MediaKeys has been bound to a media element.
+ bool IsBoundToMediaElement() const;
+
+private:
+
+ // Instantiate CDMProxy instance.
+ // It could be MediaDrmCDMProxy (Widevine on Fennec) or GMPCDMProxy (the rest).
+ already_AddRefed<CDMProxy> CreateCDMProxy();
+
+ // Removes promise from mPromises, and returns it.
+ already_AddRefed<DetailedPromise> RetrievePromise(PromiseId aId);
+
+ // Owning ref to proxy. The proxy has a weak reference back to the MediaKeys,
+ // and the MediaKeys destructor clears the proxy's reference to the MediaKeys.
+ RefPtr<CDMProxy> mProxy;
+
+ RefPtr<HTMLMediaElement> mElement;
+
+ nsCOMPtr<nsPIDOMWindowInner> mParent;
+ const nsString mKeySystem;
+ nsCString mNodeId;
+ KeySessionHashMap mKeySessions;
+ PromiseHashMap mPromises;
+ PendingKeySessionsHashMap mPendingSessions;
+ PromiseId mCreatePromiseId;
+
+ RefPtr<nsIPrincipal> mPrincipal;
+ RefPtr<nsIPrincipal> mTopLevelPrincipal;
+
+ const MediaKeySystemConfiguration mConfig;
+
+ PendingPromiseIdTokenHashMap mPromiseIdToken;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_mediakeys_h__