Clean up remoting project

remoting/host/capturer_gdi.h

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef REMOTING_HOST_CAPTURER_GDI_H_
-#define REMOTING_HOST_CAPTURER_GDI_H_
-
-#include <windows.h>
-typedef HBITMAP BitmapRef;
-#include "base/memory/scoped_ptr.h"
-#include "remoting/host/capturer.h"
-#include "remoting/host/capturer_helper.h"
-
-namespace remoting {
-
-class Differ;
-
-// CapturerGdi captures 32bit RGB using GDI.
-//
-// CapturerGdi is double-buffered as required by Capturer. See
-// remoting/host/capturer.h.
-class CapturerGdi : public Capturer {
- public:
-  CapturerGdi();
-  virtual ~CapturerGdi();
-
-  // Capturer interface.
-  virtual void ScreenConfigurationChanged();
-  virtual media::VideoFrame::Format pixel_format() const;
-  virtual void ClearInvalidRects();
-  virtual void InvalidateRects(const InvalidRects& inval_rects);
-  virtual void InvalidateScreen(const gfx::Size& size);
-  virtual void InvalidateFullScreen();
-  virtual void CaptureInvalidRects(CaptureCompletedCallback* callback);
-  virtual const gfx::Size& size_most_recent() const;
-
- private:
-  struct VideoFrameBuffer {
-    VideoFrameBuffer(void* data, const gfx::Size& size, int bytes_per_pixel,
-                     int bytes_per_row)
-      : data(data), size(size), bytes_per_pixel(bytes_per_pixel),
-        bytes_per_row(bytes_per_row) {
-    }
-    VideoFrameBuffer() {
-      data = 0;
-      size = gfx::Size(0, 0);
-      bytes_per_pixel = 0;
-      bytes_per_row = 0;
-    }
-    void* data;
-    gfx::Size size;
-    int bytes_per_pixel;
-    int bytes_per_row;
-  };
-
-  // Make sure that the current buffer has the same size as the screen.
-  void UpdateBufferCapture(const gfx::Size& size);
-
-  // Allocate memory for a buffer of a given size, freeing any memory previously
-  // allocated for that buffer.
-  void ReallocateBuffer(int buffer_index, const gfx::Size& size);
-
-  void CalculateInvalidRects();
-  void CaptureRects(const InvalidRects& rects,
-                    CaptureCompletedCallback* callback);
-
-  void ReleaseBuffers();
-  // Generates an image in the current buffer.
-  void CaptureImage();
-
-  // Gets the current screen size and calls ScreenConfigurationChanged
-  // if the screen size has changed.
-  void MaybeChangeScreenConfiguration();
-
-  // Gets the screen size.
-  gfx::Size GetScreenSize();
-
-  // A thread-safe list of invalid rectangles, and the size of the most
-  // recently captured screen.
-  CapturerHelper helper;
-
-  // There are two buffers for the screen images, as required by Capturer.
-  static const int kNumBuffers = 2;
-  VideoFrameBuffer buffers_[kNumBuffers];
-
-  // Gdi specific information about screen.
-  HDC desktop_dc_;
-  HDC memory_dc_;
-  HBITMAP target_bitmap_[kNumBuffers];
-
-  // The screen size attached to the device contexts through which the screen
-  // is captured.
-  gfx::Size dc_size_;
-
-  // The current buffer with valid data for reading.
-  int current_buffer_;
-
-  // Format of pixels returned in buffer.
-  media::VideoFrame::Format pixel_format_;
-
-  // Class to calculate the difference between two screen bitmaps.
-  scoped_ptr<Differ> differ_;
-
-  // True if we should force a fullscreen capture.
-  bool capture_fullscreen_;
-
-  DISALLOW_COPY_AND_ASSIGN(CapturerGdi);
-};
-
-}  // namespace remoting
-
-#endif  // REMOTING_HOST_CAPTURER_GDI_H_