content/browser/renderer_host/media/screen_capture_device.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_SCREEN_CAPTURE_DEVICE_H_
   6 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_SCREEN_CAPTURE_DEVICE_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/common/content_export.h"
  11 #include "media/video/capture/video_capture_device.h"
  12
  13 namespace base {
  14 class SequencedTaskRunner;
  15 }  // namespace base
  16
  17 namespace webrtc {
  18 class ScreenCapturer;
  19 }  // namespace webrtc
  20
  21 namespace content {
  22
  23 // ScreenCaptureDevice implements VideoCaptureDevice for the screen. It's
  24 // essentially an adapter between ScreenCapturer and VideoCaptureDevice.
  25 class CONTENT_EXPORT ScreenCaptureDevice : public media::VideoCaptureDevice {
  26  public:
  27   explicit ScreenCaptureDevice(
  28       scoped_refptr<base::SequencedTaskRunner> task_runner);
  29   virtual ~ScreenCaptureDevice();
  30
  31   // Helper used in tests to supply a fake capturer.
  32   void SetScreenCapturerForTest(
  33       scoped_ptr<webrtc::ScreenCapturer> capturer);
  34
  35   // VideoCaptureDevice interface.
  36   virtual void Allocate(int width, int height,
  37                         int frame_rate,
  38                         EventHandler* event_handler) OVERRIDE;
  39   virtual void Start() OVERRIDE;
  40   virtual void Stop() OVERRIDE;
  41   virtual void DeAllocate() OVERRIDE;
  42   virtual const Name& device_name() OVERRIDE;
  43
  44  private:
  45   class Core;
  46   scoped_refptr<Core> core_;
  47   Name name_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(ScreenCaptureDevice);
  50 };
  51
  52 }  // namespace content
  53
  54 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_SCREEN_CAPTURE_DEVICE_H_