| /* |
| * Copyright (c) 2014 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 <memory> |
| |
| #include "webrtc/modules/desktop_capture/cropped_desktop_frame.h" |
| |
| #include "webrtc/base/constructormagic.h" |
| |
| namespace webrtc { |
| |
| // A DesktopFrame that is a sub-rect of another DesktopFrame. |
| class CroppedDesktopFrame : public DesktopFrame { |
| public: |
| CroppedDesktopFrame(std::unique_ptr<DesktopFrame> frame, |
| const DesktopRect& rect); |
| |
| private: |
| std::unique_ptr<DesktopFrame> frame_; |
| |
| RTC_DISALLOW_COPY_AND_ASSIGN(CroppedDesktopFrame); |
| }; |
| |
| std::unique_ptr<DesktopFrame> CreateCroppedDesktopFrame( |
| std::unique_ptr<DesktopFrame> frame, |
| const DesktopRect& rect) { |
| if (!DesktopRect::MakeSize(frame->size()).ContainsRect(rect)) |
| return nullptr; |
| |
| return std::unique_ptr<DesktopFrame>( |
| new CroppedDesktopFrame(std::move(frame), rect)); |
| } |
| |
| CroppedDesktopFrame::CroppedDesktopFrame(std::unique_ptr<DesktopFrame> frame, |
| const DesktopRect& rect) |
| : DesktopFrame(rect.size(), |
| frame->stride(), |
| frame->GetFrameDataAtPos(rect.top_left()), |
| frame->shared_memory()) { |
| frame_ = std::move(frame); |
| } |
| |
| } // namespace webrtc |