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-rw-r--r--dom/media/platforms/wmf/MFCDMSession.h93
1 files changed, 93 insertions, 0 deletions
diff --git a/dom/media/platforms/wmf/MFCDMSession.h b/dom/media/platforms/wmf/MFCDMSession.h
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+++ b/dom/media/platforms/wmf/MFCDMSession.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_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