src/third_party/webrtc/modules/desktop_capture/desktop_and_cursor_composer.h

   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
  18 namespace webrtc {
  19
  20 // A wrapper for DesktopCapturer that also captures mouse using specified
  21 // MouseCursorMonitor and renders it on the generated streams.
  22 class 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_