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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 void SetWidevineL1Path(const char* aPath);
// Perform clean-up when shutting down the MFCDM process.
static void Shutdown();
// Return capabilities from all key systems which the media foundation CDM
// supports.
using CapabilitiesPromise =
MozPromise<CopyableTArray<MFCDMCapabilitiesIPDL>, nsresult, true>;
static RefPtr<CapabilitiesPromise> GetAllKeySystemsCapabilities();
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(
const MFCDMCapabilitiesRequest& aRequest,
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);
mozilla::ipc::IPCResult RecvSetServerCertificate(
const CopyableTArray<uint8_t>& aCertificate,
UpdateSessionResolver&& aResolver);
mozilla::ipc::IPCResult RecvGetStatusForPolicy(
const dom::HDCPVersion& aMinHdcpVersion,
GetStatusForPolicyResolver&& aResolver);
nsISerialEventTarget* ManagerThread() { return mManagerThread; }
void AssertOnManagerThread() const {
MOZ_ASSERT(mManagerThread->IsOnCurrentThread());
}
already_AddRefed<MFCDMProxy> GetMFCDMProxy();
void ShutdownCDM();
void Destroy();
private:
~MFCDMParent();
enum class CapabilitesFlag {
HarewareDecryption,
NeedHDCPCheck,
NeedClearLeadCheck,
};
using CapabilitesFlagSet = EnumSet<CapabilitesFlag, uint8_t>;
static LPCWSTR GetCDMLibraryName(const nsString& aKeySystem);
static HRESULT GetOrCreateFactory(
const nsString& aKeySystem,
Microsoft::WRL::ComPtr<IMFContentDecryptionModuleFactory>& aFactoryOut);
static HRESULT LoadFactory(
const nsString& aKeySystem,
Microsoft::WRL::ComPtr<IMFContentDecryptionModuleFactory>& aFactoryOut);
static void GetCapabilities(const nsString& aKeySystem,
const CapabilitesFlagSet& aFlags,
IMFContentDecryptionModuleFactory* aFactory,
MFCDMCapabilitiesIPDL& aCapabilitiesOut);
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;
static inline BSTR sWidevineL1Path;
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;
};
// A helper class only used in the chrome process to handle CDM related tasks.
class MFCDMService {
public:
// This is used to display CDM capabilites in `about:support`.
static void GetAllKeySystemsCapabilities(dom::Promise* aPromise);
// If Widevine L1 is downloaded after the MFCDM process is created, then we
// use this method to update the L1 path and setup L1 permission for the MFCDM
// process.
static void UpdateWidevineL1Path(nsIFile* aFile);
private:
static RefPtr<GenericNonExclusivePromise> LaunchMFCDMProcessIfNeeded(
ipc::SandboxingKind aSandbox);
};
} // namespace mozilla
#endif // DOM_MEDIA_IPC_MFCDMPARENT_H_
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