9c0914f938
CreateCroppedDesktopFrame() does not need to create a CroppedDesktopFrame if the size won't change. Bug: webrtc:8039 Change-Id: Ie6789a4b473b69bced94c4a25a68f1da6bb3510e Reviewed-on: https://chromium-review.googlesource.com/587808 Commit-Queue: Zijie He <zijiehe@chromium.org> Reviewed-by: Jamie Walch <jamiewalch@chromium.org> Cr-Commit-Position: refs/heads/master@{#19163}
59 lines
1.7 KiB
C++
59 lines
1.7 KiB
C++
/*
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* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include <memory>
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#include "webrtc/modules/desktop_capture/cropped_desktop_frame.h"
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#include "webrtc/rtc_base/checks.h"
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#include "webrtc/rtc_base/constructormagic.h"
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namespace webrtc {
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// A DesktopFrame that is a sub-rect of another DesktopFrame.
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class CroppedDesktopFrame : public DesktopFrame {
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public:
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CroppedDesktopFrame(std::unique_ptr<DesktopFrame> frame,
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const DesktopRect& rect);
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private:
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std::unique_ptr<DesktopFrame> frame_;
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RTC_DISALLOW_COPY_AND_ASSIGN(CroppedDesktopFrame);
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};
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std::unique_ptr<DesktopFrame> CreateCroppedDesktopFrame(
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std::unique_ptr<DesktopFrame> frame,
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const DesktopRect& rect) {
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RTC_DCHECK(frame);
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if (!DesktopRect::MakeSize(frame->size()).ContainsRect(rect)) {
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return nullptr;
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}
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if (frame->size().equals(rect.size())) {
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return frame;
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}
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return std::unique_ptr<DesktopFrame>(
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new CroppedDesktopFrame(std::move(frame), rect));
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}
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CroppedDesktopFrame::CroppedDesktopFrame(std::unique_ptr<DesktopFrame> frame,
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const DesktopRect& rect)
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: DesktopFrame(rect.size(),
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frame->stride(),
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frame->GetFrameDataAtPos(rect.top_left()),
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frame->shared_memory()) {
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frame_ = std::move(frame);
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}
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} // namespace webrtc
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