text: /*
   *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
   *
   *  Use of this source code is governed by a BSD-style license
   *  that can be found in the LICENSE file in the root of the source
   *  tree. An additional intellectual property rights grant can be found
   *  in the file PATENTS.  All contributing project authors may
   *  be found in the AUTHORS file in the root of the source tree.
   */
  
  #include "modules/desktop_capture/shared_desktop_frame.h"
  
  #include <memory>
  #include <type_traits>
  #include <utility>
  
  namespace webrtc {
  
  SharedDesktopFrame::~SharedDesktopFrame() {}
  
  // static
  std::unique_ptr<SharedDesktopFrame> SharedDesktopFrame::Wrap(
      std::unique_ptr<DesktopFrame> desktop_frame) {
    return std::unique_ptr<SharedDesktopFrame>(
        new SharedDesktopFrame(new Core(std::move(desktop_frame))));
  }
  
  SharedDesktopFrame* SharedDesktopFrame::Wrap(DesktopFrame* desktop_frame) {
    return Wrap(std::unique_ptr<DesktopFrame>(desktop_frame)).release();
  }
  
  DesktopFrame* SharedDesktopFrame::GetUnderlyingFrame() {
    return core_->get();
  }
  
  bool SharedDesktopFrame::ShareFrameWith(const SharedDesktopFrame& other) const {
    return core_->get() == other.core_->get();
  }
  
  std::unique_ptr<SharedDesktopFrame> SharedDesktopFrame::Share() {
    std::unique_ptr<SharedDesktopFrame> result(new SharedDesktopFrame(core_));
    result->CopyFrameInfoFrom(*this);
    return result;
  }
  
  bool SharedDesktopFrame::IsShared() {
    return !core_->HasOneRef();
  }
  
  SharedDesktopFrame::SharedDesktopFrame(rtc::scoped_refptr<Core> core)
      : DesktopFrame((*core)->size(),
                     (*core)->stride(),
                     (*core)->data(),
                     (*core)->shared_memory()),
        core_(core) {
    CopyFrameInfoFrom(*(core_->get()));
  }
  
  }  // namespace webrtc
  