Line data    Source code

       1             : /*
       2             :  *  Copyright (c) 2014 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             : #include <memory>
      12             : 
      13             : #include "webrtc/modules/desktop_capture/cropped_desktop_frame.h"
      14             : 
      15             : #include "webrtc/base/constructormagic.h"
      16             : 
      17             : namespace webrtc {
      18             : 
      19             : // A DesktopFrame that is a sub-rect of another DesktopFrame.
      20           0 : class CroppedDesktopFrame : public DesktopFrame {
      21             :  public:
      22             :   CroppedDesktopFrame(std::unique_ptr<DesktopFrame> frame,
      23             :                       const DesktopRect& rect);
      24             : 
      25             :  private:
      26             :   std::unique_ptr<DesktopFrame> frame_;
      27             : 
      28             :   RTC_DISALLOW_COPY_AND_ASSIGN(CroppedDesktopFrame);
      29             : };
      30             : 
      31           0 : std::unique_ptr<DesktopFrame> CreateCroppedDesktopFrame(
      32             :     std::unique_ptr<DesktopFrame> frame,
      33             :     const DesktopRect& rect) {
      34           0 :   if (!DesktopRect::MakeSize(frame->size()).ContainsRect(rect))
      35           0 :     return nullptr;
      36             : 
      37             :   return std::unique_ptr<DesktopFrame>(
      38           0 :       new CroppedDesktopFrame(std::move(frame), rect));
      39             : }
      40             : 
      41           0 : CroppedDesktopFrame::CroppedDesktopFrame(std::unique_ptr<DesktopFrame> frame,
      42           0 :                                          const DesktopRect& rect)
      43             :     : DesktopFrame(rect.size(),
      44             :                    frame->stride(),
      45           0 :                    frame->GetFrameDataAtPos(rect.top_left()),
      46           0 :                    frame->shared_memory()) {
      47           0 :   frame_ = std::move(frame);
      48           0 : }
      49             : 
      50             : }  // namespace webrtc