blob: 72bb1a651ff0e09b82284995cd1b5cd3360d8125 [file] [log] [blame]
* Copyright (c) 2016 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/desktop_frame.h"
#include "modules/desktop_capture/desktop_geometry.h"
namespace webrtc {
// Represents the rotation of a DesktopFrame.
enum class Rotation {
// Rotates input DesktopFrame |source|, copies pixel in an unrotated rectangle
// |source_rect| into the target rectangle of another DesktopFrame |target|.
// Target rectangle here is the rotated |source_rect| plus |target_offset|.
// |rotation| specifies |source| to |target| rotation. |source_rect| is in
// |source| coordinate. |target_offset| is in |target| coordinate.
// This function triggers check failure if |source| does not cover the
// |source_rect|, or |target| does not cover the rotated |rect|.
void RotateDesktopFrame(const DesktopFrame& source,
const DesktopRect& source_rect,
const Rotation& rotation,
const DesktopVector& target_offset,
DesktopFrame* target);
// Returns a reverse rotation of |rotation|.
Rotation ReverseRotation(Rotation rotation);
// Returns a rotated DesktopSize of |size|.
DesktopSize RotateSize(DesktopSize size, Rotation rotation);
// Returns a rotated DesktopRect of |rect|. The |size| represents the size of
// the DesktopFrame which |rect| belongs in.
DesktopRect RotateRect(DesktopRect rect, DesktopSize size, Rotation rotation);
} // namespace webrtc