blob: 0747a4ea1fb0d55c36b535f2283c8b978409d0db [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.
*/
#ifndef WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_CAPTURER_DIFFER_WRAPPER_H_
#define WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_CAPTURER_DIFFER_WRAPPER_H_
#include <memory>
#include "webrtc/modules/desktop_capture/desktop_capturer.h"
#include "webrtc/modules/desktop_capture/shared_desktop_frame.h"
namespace webrtc {
// DesktopCapturer wrapper that calculates updated_region() by comparing frames
// content. This class always expects the underlying DesktopCapturer
// implementation returns a superset of updated regions in DestkopFrame. If a
// DesktopCapturer implementation does not know the updated region, it should
// set updated_region() to full frame.
//
// This class marks entire frame as updated if the frame size or frame stride
// has been changed.
class DesktopCapturerDifferWrapper : public DesktopCapturer,
public DesktopCapturer::Callback {
public:
// Creates a DesktopCapturerDifferWrapper with a DesktopCapturer
// implementation, and takes its ownership.
explicit DesktopCapturerDifferWrapper(
std::unique_ptr<DesktopCapturer> base_capturer);
~DesktopCapturerDifferWrapper() override;
// DesktopCapturer interface.
void Start(DesktopCapturer::Callback* callback) override;
void SetSharedMemoryFactory(
std::unique_ptr<SharedMemoryFactory> shared_memory_factory) override;
void CaptureFrame() override;
void SetExcludedWindow(WindowId window) override;
bool GetSourceList(SourceList* screens) override;
bool SelectSource(SourceId id) override;
bool FocusOnSelectedSource() override;
private:
// DesktopCapturer::Callback interface.
void OnCaptureResult(Result result,
std::unique_ptr<DesktopFrame> frame) override;
const std::unique_ptr<DesktopCapturer> base_capturer_;
DesktopCapturer::Callback* callback_;
std::unique_ptr<SharedDesktopFrame> last_frame_;
};
} // namespace webrtc
#endif // WEBRTC_MODULES_DESKTOP_CAPTURE_DESKTOP_CAPTURER_DIFFER_WRAPPER_H_