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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_MFCDMCHILD_H_
#define DOM_MEDIA_IPC_MFCDMCHILD_H_
#include <unordered_map>
#include "mozilla/Atomics.h"
#include "mozilla/MozPromise.h"
#include "mozilla/PMFCDMChild.h"
namespace mozilla {
class WMFCDMProxyCallback;
/**
* MFCDMChild is a content process proxy to MFCDMParent and the actual CDM
* running in utility process.
*/
class MFCDMChild final : public PMFCDMChild {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MFCDMChild);
explicit MFCDMChild(const nsAString& aKeySystem);
using CapabilitiesPromise = MozPromise<MFCDMCapabilitiesIPDL, nsresult, true>;
RefPtr<CapabilitiesPromise> GetCapabilities();
template <typename PromiseType>
already_AddRefed<PromiseType> InvokeAsync(
std::function<void()>&& aCall, const char* aCallerName,
MozPromiseHolder<PromiseType>& aPromise);
using InitPromise = MozPromise<MFCDMInitIPDL, nsresult, true>;
RefPtr<InitPromise> Init(const nsAString& aOrigin,
const CopyableTArray<nsString>& aInitDataTypes,
const KeySystemConfig::Requirement aPersistentState,
const KeySystemConfig::Requirement aDistinctiveID,
const bool aHWSecure,
WMFCDMProxyCallback* aProxyCallback);
using SessionPromise = MozPromise<nsString, nsresult, true>;
RefPtr<SessionPromise> CreateSessionAndGenerateRequest(
uint32_t aPromiseId, const KeySystemConfig::SessionType aSessionType,
const nsAString& aInitDataType, const nsTArray<uint8_t>& aInitData);
RefPtr<GenericPromise> LoadSession(
uint32_t aPromiseId, const KeySystemConfig::SessionType aSessionType,
const nsAString& aSessionId);
RefPtr<GenericPromise> UpdateSession(uint32_t aPromiseId,
const nsAString& aSessionId,
nsTArray<uint8_t>& aResponse);
RefPtr<GenericPromise> CloseSession(uint32_t aPromiseId,
const nsAString& aSessionId);
RefPtr<GenericPromise> RemoveSession(uint32_t aPromiseId,
const nsAString& aSessionId);
mozilla::ipc::IPCResult RecvOnSessionKeyMessage(
const MFCDMKeyMessage& aMessage);
mozilla::ipc::IPCResult RecvOnSessionKeyStatusesChanged(
const MFCDMKeyStatusChange& aKeyStatuses);
mozilla::ipc::IPCResult RecvOnSessionKeyExpiration(
const MFCDMKeyExpiration& aExpiration);
uint64_t Id() const { return mId; }
void IPDLActorDestroyed() {
AssertOnManagerThread();
mIPDLSelfRef = nullptr;
if (!mShutdown) {
// Remote crashed!
mState = NS_ERROR_NOT_AVAILABLE;
}
}
void Shutdown();
nsISerialEventTarget* ManagerThread() { return mManagerThread; }
void AssertOnManagerThread() const {
MOZ_ASSERT(mManagerThread->IsOnCurrentThread());
}
private:
~MFCDMChild();
using RemotePromise = GenericNonExclusivePromise;
RefPtr<RemotePromise> EnsureRemote();
void AssertSendable();
const nsString mKeySystem;
const RefPtr<nsISerialEventTarget> mManagerThread;
RefPtr<MFCDMChild> mIPDLSelfRef;
RefPtr<RemotePromise> mRemotePromise;
MozPromiseHolder<RemotePromise> mRemotePromiseHolder;
MozPromiseRequestHolder<RemotePromise> mRemoteRequest;
// Before EnsureRemote(): NS_ERROR_NOT_INITIALIZED; After EnsureRemote():
// NS_OK or some error code.
Atomic<nsresult> mState;
MozPromiseHolder<CapabilitiesPromise> mCapabilitiesPromiseHolder;
Atomic<bool> mShutdown;
// This represents an unique Id to indentify the CDM in the remote process.
// 0(zero) means the CDM is not yet initialized.
// Modified on the manager thread, and read on other threads.
Atomic<uint64_t> mId;
MozPromiseHolder<InitPromise> mInitPromiseHolder;
using InitIPDLPromise = MozPromise<mozilla::MFCDMInitResult,
mozilla::ipc::ResponseRejectReason, true>;
MozPromiseRequestHolder<InitIPDLPromise> mInitRequest;
MozPromiseHolder<SessionPromise> mCreateSessionPromiseHolder;
MozPromiseRequestHolder<CreateSessionAndGenerateRequestPromise>
mCreateSessionRequest;
MozPromiseHolder<GenericPromise> mLoadSessionPromiseHolder;
MozPromiseRequestHolder<LoadSessionPromise> mLoadSessionRequest;
MozPromiseHolder<GenericPromise> mUpdateSessionPromiseHolder;
MozPromiseRequestHolder<UpdateSessionPromise> mUpdateSessionRequest;
MozPromiseHolder<GenericPromise> mCloseSessionPromiseHolder;
MozPromiseRequestHolder<CloseSessionPromise> mCloseSessionRequest;
MozPromiseHolder<GenericPromise> mRemoveSessionPromiseHolder;
MozPromiseRequestHolder<RemoveSessionPromise> mRemoveSessionRequest;
std::unordered_map<uint32_t, MozPromiseHolder<SessionPromise>>
mPendingSessionPromises;
std::unordered_map<uint32_t, MozPromiseHolder<GenericPromise>>
mPendingGenericPromises;
RefPtr<WMFCDMProxyCallback> mProxyCallback;
};
} // namespace mozilla
#endif // DOM_MEDIA_IPC_MFCDMCHILD_H_
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