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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_PLATFORM_WMF_MFCDMSESSION_H
#define DOM_MEDIA_PLATFORM_WMF_MFCDMSESSION_H
#include <vector>
#include <wrl.h>
#include <wrl/client.h>
#include "MFCDMExtra.h"
#include "MediaEventSource.h"
#include "mozilla/PMFCDM.h"
#include "mozilla/KeySystemConfig.h"
#include "nsAString.h"
namespace mozilla {
// MFCDMSession represents a key session defined by the EME spec, it operates
// the IMFContentDecryptionModuleSession directly and forward events from
// IMFContentDecryptionModuleSession to its caller. It's not thread-safe and
// can only be used on the manager thread for now.
class MFCDMSession final {
public:
~MFCDMSession();
static MFCDMSession* Create(KeySystemConfig::SessionType aSessionType,
IMFContentDecryptionModule* aCdm,
nsISerialEventTarget* aManagerThread);
// APIs corresponding to EME APIs (MediaKeySession)
HRESULT GenerateRequest(const nsAString& aInitDataType,
const uint8_t* aInitData, uint32_t aInitDataSize);
HRESULT Load(const nsAString& aSessionId);
HRESULT Update(const nsTArray<uint8_t>& aMessage);
HRESULT Close();
HRESULT Remove();
// Session status related events
MediaEventSource<MFCDMKeyMessage>& KeyMessageEvent() {
return mKeyMessageEvent;
}
MediaEventSource<MFCDMKeyStatusChange>& KeyChangeEvent() {
return mKeyChangeEvent;
}
MediaEventSource<MFCDMKeyExpiration>& ExpirationEvent() {
return mExpirationEvent;
}
const Maybe<nsString>& SessionID() const { return mSessionId; }
private:
class SessionCallbacks;
MFCDMSession(IMFContentDecryptionModuleSession* aSession,
SessionCallbacks* aCallback,
nsISerialEventTarget* aManagerThread);
MFCDMSession(const MFCDMSession&) = delete;
MFCDMSession& operator=(const MFCDMSession&) = delete;
bool RetrieveSessionId();
void OnSessionKeysChange();
void OnSessionKeyMessage(const MF_MEDIAKEYSESSION_MESSAGETYPE& aType,
const nsTArray<uint8_t>& aMessage);
HRESULT UpdateExpirationIfNeeded();
void AssertOnManagerThread() const {
MOZ_ASSERT(mManagerThread->IsOnCurrentThread());
}
const Microsoft::WRL::ComPtr<IMFContentDecryptionModuleSession> mSession;
const nsCOMPtr<nsISerialEventTarget> mManagerThread;
MediaEventProducer<MFCDMKeyMessage> mKeyMessageEvent;
MediaEventProducer<MFCDMKeyStatusChange> mKeyChangeEvent;
MediaEventProducer<MFCDMKeyExpiration> mExpirationEvent;
MediaEventListener mKeyMessageListener;
MediaEventListener mKeyChangeListener;
// IMFContentDecryptionModuleSession's id might not be ready immediately after
// the session gets created.
Maybe<nsString> mSessionId;
// NaN when the CDM doesn't explicitly define the time or the time never
// expires.
double mExpiredTimeMilliSecondsSinceEpoch;
};
} // namespace mozilla
#endif // DOM_MEDIA_PLATFORM_WMF_MFCDMSESSION_H
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