Add Mojo CDM Service.

media/mojo/services/mojo_cdm_service.h

+// Copyright 2014 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_MOJO_SERVICES_MOJO_CDM_SERVICE_H_
+#define MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "media/base/media_keys.h"
+#include "media/mojo/interfaces/content_decryption_module.mojom.h"
+#include "mojo/public/cpp/bindings/interface_impl.h"
+
+namespace media {
+
+// A mojo::ContentDecryptionModule implementation backed by a media::MediaKeys.
+class MojoCdmService
+    : public mojo::InterfaceImpl<mojo::ContentDecryptionModule> {
+ public:
+  MojoCdmService(const mojo::String& key_system);
+  ~MojoCdmService() final;
+
+  // mojo::ContentDecryptionModule implementation.
+  void SetServerCertificate(
+      mojo::Array<uint8_t> certificate_data,
+      const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
+  void CreateSession(const mojo::String& init_data_type,
+                     mojo::Array<uint8_t> init_data,
+                     mojo::ContentDecryptionModule::SessionType session_type,
+                     const mojo::Callback<void(mojo::CdmPromiseResultPtr,
+                                               mojo::String)>& callback) final;
+  void LoadSession(const mojo::String& session_id,
+                   const mojo::Callback<void(mojo::CdmPromiseResultPtr,
+                                             mojo::String)>& callback) final;
+  void UpdateSession(
+      const mojo::String& session_id,
+      mojo::Array<uint8_t> response,
+      const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
+  void CloseSession(
+      const mojo::String& session_id,
+      const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
+  void RemoveSession(
+      const mojo::String& session_id,
+      const mojo::Callback<void(mojo::CdmPromiseResultPtr)>& callback) final;
+  void GetUsableKeyIds(
+      const mojo::String& session_id,
+      const mojo::Callback<void(mojo::CdmPromiseResultPtr,
+                                mojo::Array<mojo::Array<uint8_t>>)>& callback)
+      final;
+  void GetCdmContext(
+      mojo::InterfaceRequest<mojo::CdmContext> cdm_context) final;
+
+ private:
+  // Callbacks for firing session events.
+  void OnSessionMessage(const std::string& session_id,
+                        const std::vector<uint8>& message,
+                        const GURL& destination_url);
+  void OnSessionKeysChange(const std::string& session_id,
+                           bool has_additional_usable_key);
+  void OnSessionExpirationUpdate(const std::string& session_id,
+                                 const base::Time& new_expiry_time);
+  void OnSessionReady(const std::string& session_id);
+  void OnSessionClosed(const std::string& session_id);
+  void OnSessionError(const std::string& session_id,
+                      MediaKeys::Exception exception,
+                      uint32 system_code,
+                      const std::string& error_message);
+
+  scoped_ptr<MediaKeys> cdm_;
+
+  base::WeakPtrFactory<MojoCdmService> weak_factory_;
+  base::WeakPtr<MojoCdmService> weak_this_;
+
+  DISALLOW_COPY_AND_ASSIGN(MojoCdmService);
+};
+
+}  // namespace media
+
+#endif  // MEDIA_MOJO_SERVICES_MOJO_CDM_SERVICE_H_