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/*
* Copyright (c) 2020 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 MODULES_DESKTOP_CAPTURE_WIN_WINDOW_CAPTURER_WIN_GDI_H_
#define MODULES_DESKTOP_CAPTURE_WIN_WINDOW_CAPTURER_WIN_GDI_H_
#include <map>
#include <memory>
#include <vector>
#include "modules/desktop_capture/desktop_capture_options.h"
#include "modules/desktop_capture/desktop_capturer.h"
#include "modules/desktop_capture/win/window_capture_utils.h"
#include "modules/desktop_capture/window_finder_win.h"
namespace webrtc {
class WindowCapturerWinGdi : public DesktopCapturer {
public:
explicit WindowCapturerWinGdi(bool enumerate_current_process_windows);
// Disallow copy and assign
WindowCapturerWinGdi(const WindowCapturerWinGdi&) = delete;
WindowCapturerWinGdi& operator=(const WindowCapturerWinGdi&) = delete;
~WindowCapturerWinGdi() override;
static std::unique_ptr<DesktopCapturer> CreateRawWindowCapturer(
const DesktopCaptureOptions& options);
// DesktopCapturer interface.
void Start(Callback* callback) override;
void CaptureFrame() override;
bool GetSourceList(SourceList* sources) override;
bool SelectSource(SourceId id) override;
bool FocusOnSelectedSource() override;
bool IsOccluded(const DesktopVector& pos) override;
private:
struct CaptureResults {
Result result;
std::unique_ptr<DesktopFrame> frame;
};
CaptureResults CaptureFrame(bool capture_owned_windows);
Callback* callback_ = nullptr;
// HWND and HDC for the currently selected window or nullptr if window is not
// selected.
HWND window_ = nullptr;
DesktopSize previous_size_;
WindowCaptureHelperWin window_capture_helper_;
bool enumerate_current_process_windows_;
// This map is used to avoid flickering for the case when SelectWindow() calls
// are interleaved with Capture() calls.
std::map<HWND, DesktopSize> window_size_map_;
WindowFinderWin window_finder_;
std::vector<HWND> owned_windows_;
std::unique_ptr<WindowCapturerWinGdi> owned_window_capturer_;
};
} // namespace webrtc
#endif // MODULES_DESKTOP_CAPTURE_WIN_WINDOW_CAPTURER_WIN_GDI_H_
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