desktop_capture_device.h revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
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_MEDIA_CAPTURE_DESKTOP_CAPTURE_DEVICE_H_
6#define CONTENT_BROWSER_MEDIA_CAPTURE_DESKTOP_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
13namespace base {
14class SequencedTaskRunner;
15}  // namespace base
16
17namespace webrtc {
18class DesktopCapturer;
19}  // namespace webrtc
20
21namespace content {
22
23struct DesktopMediaID;
24
25// DesktopCaptureDevice implements VideoCaptureDevice for screens and windows.
26// It's essentially an adapter between webrtc::DesktopCapturer and
27// VideoCaptureDevice.
28class CONTENT_EXPORT DesktopCaptureDevice : public media::VideoCaptureDevice {
29 public:
30  // Creates capturer for the specified |source| and then creates
31  // DesktopCaptureDevice for it. May return NULL in case of a failure (e.g. if
32  // requested window was destroyed).
33  static scoped_ptr<media::VideoCaptureDevice> Create(
34      const DesktopMediaID& source);
35
36  DesktopCaptureDevice(scoped_refptr<base::SequencedTaskRunner> task_runner,
37                       scoped_ptr<webrtc::DesktopCapturer> desktop_capturer);
38  virtual ~DesktopCaptureDevice();
39
40  // VideoCaptureDevice interface.
41  virtual void AllocateAndStart(const media::VideoCaptureParams& params,
42                                scoped_ptr<Client> client) OVERRIDE;
43  virtual void StopAndDeAllocate() OVERRIDE;
44
45 private:
46  class Core;
47  scoped_refptr<Core> core_;
48
49  DISALLOW_COPY_AND_ASSIGN(DesktopCaptureDevice);
50};
51
52}  // namespace content
53
54#endif  // CONTENT_BROWSER_MEDIA_CAPTURE_DESKTOP_CAPTURE_DEVICE_H_
55