e61fbfffda
To support rotation in DirectX capturer, several other changes are also required. 1. Removing AddRect in RotateDesktopFrame, this is a performance improvement. DxgiOutputDuplicator creates a rotated DesktopRegion, which can be directly add to updated_region. 2. DxgiOutputDuplicator::SourceRect() is not accurate, the rectangle in source is controlled by |offset| or |rotation_| + |offset|, instead of desktop_rect(). 3. The |region| in DxgiTexture::CopyFrom() is not accurate. It needs an unrotated DesktopRegion which offsets by |offset| instead of desktop_rect(). To avoid generating both rotated and unrotated updated_region, this parameter has been removed. This impacts DxgiTextureStagning performance a little bit (1.5ms). Refer to bug for details. BUG=webrtc:6646 Review-Url: https://codereview.webrtc.org/2530303002 Cr-Commit-Position: refs/heads/master@{#15308}
53 lines
2.0 KiB
C++
53 lines
2.0 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_FRAME_ROTATION_H_
|
|
#define WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_FRAME_ROTATION_H_
|
|
|
|
#include "webrtc/modules/desktop_capture/desktop_frame.h"
|
|
#include "webrtc/modules/desktop_capture/desktop_geometry.h"
|
|
|
|
namespace webrtc {
|
|
|
|
// Represents the rotation of a DesktopFrame.
|
|
enum class Rotation {
|
|
CLOCK_WISE_0,
|
|
CLOCK_WISE_90,
|
|
CLOCK_WISE_180,
|
|
CLOCK_WISE_270,
|
|
};
|
|
|
|
// 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
|
|
|
|
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_FRAME_ROTATION_H_
|