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cec4343fb4
Bug: webrtc:12338 Change-Id: I300ba78fc4423db7030e555d7e51d2cb2246e9a4 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/227162 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Commit-Queue: Artem Titov <titovartem@webrtc.org> Cr-Commit-Position: refs/heads/master@{#34678}
52 lines
2 KiB
C++
52 lines
2 KiB
C++
/*
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* Copyright (c) 2016 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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#ifndef MODULES_DESKTOP_CAPTURE_DESKTOP_FRAME_ROTATION_H_
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#define MODULES_DESKTOP_CAPTURE_DESKTOP_FRAME_ROTATION_H_
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#include "modules/desktop_capture/desktop_frame.h"
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#include "modules/desktop_capture/desktop_geometry.h"
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namespace webrtc {
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// Represents the rotation of a DesktopFrame.
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enum class Rotation {
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CLOCK_WISE_0,
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CLOCK_WISE_90,
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CLOCK_WISE_180,
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CLOCK_WISE_270,
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};
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// Rotates input DesktopFrame `source`, copies pixel in an unrotated rectangle
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// `source_rect` into the target rectangle of another DesktopFrame `target`.
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// Target rectangle here is the rotated `source_rect` plus `target_offset`.
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// `rotation` specifies `source` to `target` rotation. `source_rect` is in
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// `source` coordinate. `target_offset` is in `target` coordinate.
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// This function triggers check failure if `source` does not cover the
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// `source_rect`, or `target` does not cover the rotated `rect`.
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void RotateDesktopFrame(const DesktopFrame& source,
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const DesktopRect& source_rect,
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const Rotation& rotation,
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const DesktopVector& target_offset,
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DesktopFrame* target);
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// Returns a reverse rotation of `rotation`.
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Rotation ReverseRotation(Rotation rotation);
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// Returns a rotated DesktopSize of `size`.
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DesktopSize RotateSize(DesktopSize size, Rotation rotation);
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// Returns a rotated DesktopRect of `rect`. The `size` represents the size of
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// the DesktopFrame which `rect` belongs in.
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DesktopRect RotateRect(DesktopRect rect, DesktopSize size, Rotation rotation);
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} // namespace webrtc
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#endif // MODULES_DESKTOP_CAPTURE_DESKTOP_FRAME_ROTATION_H_
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