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-rw-r--r--dom/media/ipc/MFCDMParent.h116
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diff --git a/dom/media/ipc/MFCDMParent.h b/dom/media/ipc/MFCDMParent.h
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+/* 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 DOM_MEDIA_IPC_MFCDMPARENT_H_
+#define DOM_MEDIA_IPC_MFCDMPARENT_H_
+
+#include <wrl.h>
+
+#include "mozilla/Assertions.h"
+#include "mozilla/PMFCDMParent.h"
+#include "MFCDMExtra.h"
+#include "MFCDMSession.h"
+#include "MFPMPHostWrapper.h"
+#include "RemoteDecoderManagerParent.h"
+
+namespace mozilla {
+
+class MFCDMProxy;
+
+/**
+ * MFCDMParent is a wrapper class for the Media Foundation CDM in the utility
+ * process.
+ * It's responsible to create and manage a CDM and its sessions, and acts as a
+ * proxy to the Media Foundation interfaces
+ * (https://learn.microsoft.com/en-us/windows/win32/api/mfcontentdecryptionmodule/)
+ * by accepting calls from and calling back to MFCDMChild in the content
+ * process.
+ */
+class MFCDMParent final : public PMFCDMParent {
+ public:
+ NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MFCDMParent);
+
+ MFCDMParent(const nsAString& aKeySystem, RemoteDecoderManagerParent* aManager,
+ nsISerialEventTarget* aManagerThread);
+
+ static MFCDMParent* GetCDMById(uint64_t aId) {
+ MOZ_ASSERT(sRegisteredCDMs.Contains(aId));
+ return sRegisteredCDMs.Get(aId);
+ }
+ uint64_t Id() const { return mId; }
+
+ mozilla::ipc::IPCResult RecvGetCapabilities(
+ GetCapabilitiesResolver&& aResolver);
+
+ mozilla::ipc::IPCResult RecvInit(const MFCDMInitParamsIPDL& aParams,
+ InitResolver&& aResolver);
+
+ mozilla::ipc::IPCResult RecvCreateSessionAndGenerateRequest(
+ const MFCDMCreateSessionParamsIPDL& aParams,
+ CreateSessionAndGenerateRequestResolver&& aResolver);
+
+ mozilla::ipc::IPCResult RecvLoadSession(
+ const KeySystemConfig::SessionType& aSessionType,
+ const nsString& aSessionId, LoadSessionResolver&& aResolver);
+
+ mozilla::ipc::IPCResult RecvUpdateSession(
+ const nsString& aSessionId, const CopyableTArray<uint8_t>& aResponse,
+ UpdateSessionResolver&& aResolver);
+
+ mozilla::ipc::IPCResult RecvCloseSession(const nsString& aSessionId,
+ UpdateSessionResolver&& aResolver);
+
+ mozilla::ipc::IPCResult RecvRemoveSession(const nsString& aSessionId,
+ UpdateSessionResolver&& aResolver);
+
+ nsISerialEventTarget* ManagerThread() { return mManagerThread; }
+ void AssertOnManagerThread() const {
+ MOZ_ASSERT(mManagerThread->IsOnCurrentThread());
+ }
+
+ already_AddRefed<MFCDMProxy> GetMFCDMProxy();
+
+ void Destroy();
+
+ private:
+ ~MFCDMParent() { Unregister(); }
+
+ HRESULT LoadFactory();
+
+ void Register();
+ void Unregister();
+
+ void ConnectSessionEvents(MFCDMSession* aSession);
+
+ MFCDMSession* GetSession(const nsString& aSessionId);
+
+ nsString mKeySystem;
+
+ const RefPtr<RemoteDecoderManagerParent> mManager;
+ const RefPtr<nsISerialEventTarget> mManagerThread;
+
+ static inline nsTHashMap<nsUint64HashKey, MFCDMParent*> sRegisteredCDMs;
+
+ static inline uint64_t sNextId = 1;
+ const uint64_t mId;
+
+ RefPtr<MFCDMParent> mIPDLSelfRef;
+ Microsoft::WRL::ComPtr<IMFContentDecryptionModuleFactory> mFactory;
+ Microsoft::WRL::ComPtr<IMFContentDecryptionModule> mCDM;
+ Microsoft::WRL::ComPtr<MFPMPHostWrapper> mPMPHostWrapper;
+
+ std::map<nsString, UniquePtr<MFCDMSession>> mSessions;
+
+ MediaEventForwarder<MFCDMKeyMessage> mKeyMessageEvents;
+ MediaEventForwarder<MFCDMKeyStatusChange> mKeyChangeEvents;
+ MediaEventForwarder<MFCDMKeyExpiration> mExpirationEvents;
+
+ MediaEventListener mKeyMessageListener;
+ MediaEventListener mKeyChangeListener;
+ MediaEventListener mExpirationListener;
+};
+
+} // namespace mozilla
+
+#endif // DOM_MEDIA_IPC_MFCDMPARENT_H_