1/*
2 *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_AND_CURSOR_COMPOSER_H_
12#define WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_AND_CURSOR_COMPOSER_H_
13
14#include "webrtc/modules/desktop_capture/desktop_capturer.h"
15#include "webrtc/modules/desktop_capture/mouse_cursor_monitor.h"
16#include "webrtc/system_wrappers/interface/scoped_ptr.h"
17
18namespace webrtc {
19
20// A wrapper for DesktopCapturer that also captures mouse using specified
21// MouseCursorMonitor and renders it on the generated streams.
22class DesktopAndCursorComposer : public DesktopCapturer,
23                            public DesktopCapturer::Callback,
24                            public MouseCursorMonitor::Callback {
25 public:
26  // Creates a new blender that captures mouse cursor using |mouse_monitor| and
27  // renders it into the frames generated by |desktop_capturer|. If
28  // |mouse_monitor| is NULL the frames are passed unmodified. Takes ownership
29  // of both arguments.
30  DesktopAndCursorComposer(DesktopCapturer* desktop_capturer,
31                      MouseCursorMonitor* mouse_monitor);
32  virtual ~DesktopAndCursorComposer();
33
34  // DesktopCapturer interface.
35  virtual void Start(DesktopCapturer::Callback* callback) OVERRIDE;
36  virtual void Capture(const DesktopRegion& region) OVERRIDE;
37  virtual void SetExcludedWindow(WindowId window) OVERRIDE;
38
39 private:
40  // DesktopCapturer::Callback interface.
41  virtual SharedMemory* CreateSharedMemory(size_t size) OVERRIDE;
42  virtual void OnCaptureCompleted(DesktopFrame* frame) OVERRIDE;
43
44  // MouseCursorMonitor::Callback interface.
45  virtual void OnMouseCursor(MouseCursor* cursor) OVERRIDE;
46  virtual void OnMouseCursorPosition(MouseCursorMonitor::CursorState state,
47                                     const DesktopVector& position) OVERRIDE;
48
49  scoped_ptr<DesktopCapturer> desktop_capturer_;
50  scoped_ptr<MouseCursorMonitor> mouse_monitor_;
51
52  DesktopCapturer::Callback* callback_;
53
54  scoped_ptr<MouseCursor> cursor_;
55  MouseCursorMonitor::CursorState cursor_state_;
56  DesktopVector cursor_position_;
57
58  DISALLOW_COPY_AND_ASSIGN(DesktopAndCursorComposer);
59};
60
61}  // namespace webrtc
62
63#endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_AND_CURSOR_COMPOSER_H_
64