blob: c7a20b3d07907eaaa2a53e3eab11e63ac5961c6c [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 <memory>
#include "webrtc/modules/desktop_capture/screen_capturer.h"
#include "webrtc/modules/desktop_capture/shared_desktop_frame.h"
namespace webrtc {
// ScreenCapturer wrapper that calculates updated_region() by comparing frames
// content. This class always expects the underlying ScreenCapturer
// implementation returns a superset of updated regions in DestkopFrame. If a
// ScreenCapturer 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 ScreenCapturerDifferWrapper : public ScreenCapturer,
public DesktopCapturer::Callback {
// Creates a ScreenCapturerDifferWrapper with a ScreenCapturer implementation,
// and takes its ownership.
explicit ScreenCapturerDifferWrapper(
std::unique_ptr<ScreenCapturer> base_capturer);
~ScreenCapturerDifferWrapper() override;
// ScreenCapturer interface.
void Start(DesktopCapturer::Callback* callback) override;
void SetSharedMemoryFactory(
std::unique_ptr<SharedMemoryFactory> shared_memory_factory) override;
void Capture(const DesktopRegion& region) override;
bool GetScreenList(ScreenList* screens) override;
bool SelectScreen(ScreenId id) override;
// DesktopCapturer::Callback interface.
void OnCaptureResult(Result result,
std::unique_ptr<DesktopFrame> frame) override;
const std::unique_ptr<ScreenCapturer> base_capturer_;
DesktopCapturer::Callback* callback_;
std::unique_ptr<SharedDesktopFrame> last_frame_;
} // namespace webrtc