Making DesktopEnvironment a factory class used by ClientSession to create audio/video capturers and…

remoting/host/basic_desktop_environment.h

+// Copyright (c) 2012 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 REMOTING_HOST_BASIC_DESKTOP_ENVIRONMENT_H_
+#define REMOTING_HOST_BASIC_DESKTOP_ENVIRONMENT_H_
+
+#include "base/basictypes.h"
+#include "base/compiler_specific.h"
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
+#include "base/threading/non_thread_safe.h"
+#include "remoting/host/desktop_environment.h"
+
+namespace remoting {
+
+// Used to create audio/video capturers and event executor that work with
+// the local console.
+class BasicDesktopEnvironment
+    : public base::NonThreadSafe,
+      public DesktopEnvironment {
+ public:
+  BasicDesktopEnvironment();
+  virtual ~BasicDesktopEnvironment();
+
+  // DesktopEnvironment implementation.
+  virtual scoped_ptr<AudioCapturer> CreateAudioCapturer(
+      scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner) OVERRIDE;
+  virtual scoped_ptr<EventExecutor> CreateEventExecutor(
+      scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> ui_task_runner) OVERRIDE;
+  virtual scoped_ptr<VideoFrameCapturer> CreateVideoCapturer(
+      scoped_refptr<base::SingleThreadTaskRunner> capture_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> encode_task_runner) OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BasicDesktopEnvironment);
+};
+
+// Used to create |BasicDesktopEnvironment| instances.
+class BasicDesktopEnvironmentFactory : public DesktopEnvironmentFactory {
+ public:
+  BasicDesktopEnvironmentFactory();
+  virtual ~BasicDesktopEnvironmentFactory();
+
+  // DesktopEnvironmentFactory implementation.
+  virtual scoped_ptr<DesktopEnvironment> Create(
+      const std::string& client_jid,
+      const base::Closure& disconnect_callback) OVERRIDE;
+  virtual bool SupportsAudioCapture() const OVERRIDE;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BasicDesktopEnvironmentFactory);
+};
+
+}  // namespace remoting
+
+#endif  // REMOTING_HOST_BASIC_DESKTOP_ENVIRONMENT_H_