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/base/scoped_ptr.h"
15#include "webrtc/modules/desktop_capture/desktop_capturer.h"
16#include "webrtc/modules/desktop_capture/mouse_cursor_monitor.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  void Start(DesktopCapturer::Callback* callback) override;
36  void Capture(const DesktopRegion& region) override;
37  void SetExcludedWindow(WindowId window) override;
38
39 private:
40  // DesktopCapturer::Callback interface.
41  SharedMemory* CreateSharedMemory(size_t size) override;
42  void OnCaptureCompleted(DesktopFrame* frame) override;
43
44  // MouseCursorMonitor::Callback interface.
45  void OnMouseCursor(MouseCursor* cursor) override;
46  void OnMouseCursorPosition(MouseCursorMonitor::CursorState state,
47                             const DesktopVector& position) override;
48
49  rtc::scoped_ptr<DesktopCapturer> desktop_capturer_;
50  rtc::scoped_ptr<MouseCursorMonitor> mouse_monitor_;
51
52  DesktopCapturer::Callback* callback_;
53
54  rtc::scoped_ptr<MouseCursor> cursor_;
55  MouseCursorMonitor::CursorState cursor_state_;
56  DesktopVector cursor_position_;
57
58  RTC_DISALLOW_COPY_AND_ASSIGN(DesktopAndCursorComposer);
59};
60
61}  // namespace webrtc
62
63#endif  // WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_AND_CURSOR_COMPOSER_H_
64