Media Remoting: Add remoting control logic for encrypted contents.

media/remoting/remoting_cdm.h

+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef MEDIA_REMOTING_REMOTING_CDM_H_
+#define MEDIA_REMOTING_REMOTING_CDM_H_
+
+#include "media/base/cdm_context.h"
+#include "media/base/cdm_factory.h"
+#include "media/base/media_keys.h"
+#include "media/remoting/remoting_cdm_controller.h"
+
+namespace media {
+
+// TODO(xjz): Merge this with Eric's implementation.
+class RemotingCdm : public MediaKeys, public CdmContext {
+ public:
+  RemotingCdm(const std::string& key_system,
+              const GURL& security_origin,
+              const CdmConfig& cdm_config,
+              const SessionMessageCB& session_message_cb,
+              const SessionClosedCB& session_closed_cb,
+              const SessionKeysChangeCB& session_keys_change_cb,
+              const SessionExpirationUpdateCB& session_expiration_update_cb,
+              const CdmCreatedCB& cdm_created_cb,
+              std::unique_ptr<RemotingCdmController> remoting_controller);
+
+  // If |cdm| is an instance of RemotingCdm, return a type-casted pointer to it.
+  // Otherwise, return nullptr.
+  static RemotingCdm* From(CdmContext* cdm);
+
+  RemotingSourceImpl* GetRemotingSource();
+
+  // MediaKeys implementations.
+  void SetServerCertificate(const std::vector<uint8_t>& certificate,
+                            std::unique_ptr<SimpleCdmPromise> promise) override;
+  void CreateSessionAndGenerateRequest(
+      SessionType session_type,
+      EmeInitDataType init_data_type,
+      const std::vector<uint8_t>& init_data,
+      std::unique_ptr<NewSessionCdmPromise> promise) override;
+  void LoadSession(SessionType session_type,
+                   const std::string& session_id,
+                   std::unique_ptr<NewSessionCdmPromise> promise) override;
+  void UpdateSession(const std::string& session_id,
+                     const std::vector<uint8_t>& response,
+                     std::unique_ptr<SimpleCdmPromise> promise) override;
+  void CloseSession(const std::string& session_id,
+                    std::unique_ptr<SimpleCdmPromise> promise) override;
+  void RemoveSession(const std::string& session_id,
+                     std::unique_ptr<SimpleCdmPromise> promise) override;
+  CdmContext* GetCdmContext() override;
+
+  // CdmContext implementations.
+  Decryptor* GetDecryptor() override;
+  int GetCdmId() const override;
+  void* GetClassIdentifier() const override;
+
+ private:
+  ~RemotingCdm() override;
+
+  const std::unique_ptr<RemotingCdmController> remoting_controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(RemotingCdm);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_REMOTING_REMOTING_CDM_H_