blob: 6d1d49a5e35d25da16c94bd4c82d333d894c045b [file] [log] [blame]
* Copyright (c) 2017 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 "modules/desktop_capture/desktop_capturer.h"
#include "modules/desktop_capture/desktop_capturer_wrapper.h"
#include "modules/desktop_capture/desktop_frame.h"
namespace webrtc {
// A DesktopCapturerWrapper implementation to capture the result of
// |base_capturer|. Derived classes are expected to provide a ResultObserver
// implementation to observe the DesktopFrame returned by |base_capturer_|.
class CaptureResultDesktopCapturerWrapper : public DesktopCapturerWrapper,
public DesktopCapturer::Callback {
using Callback = DesktopCapturer::Callback;
// Provides a way to let derived classes or clients to modify the result
// returned by |base_capturer_|.
class ResultObserver {
virtual ~ResultObserver();
virtual void Observe(Result* result,
std::unique_ptr<DesktopFrame>* frame) = 0;
// |observer| must outlive this instance and can be |this|. |observer| is
// guaranteed to be executed only after the constructor and before the
// destructor.
std::unique_ptr<DesktopCapturer> base_capturer,
ResultObserver* observer);
~CaptureResultDesktopCapturerWrapper() override;
// DesktopCapturer implementations.
void Start(Callback* callback) final;
// DesktopCapturer::Callback implementation.
void OnCaptureResult(Result result,
std::unique_ptr<DesktopFrame> frame) final;
ResultObserver* const observer_;
Callback* callback_ = nullptr;
} // namespace webrtc