blob: e006c790217c26e2adc86a1b5bbba8595452246c [file] [log] [blame]
* Copyright (c) 2014 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 <windows.h>
#include <memory>
#include "modules/desktop_capture/desktop_capturer.h"
#include "modules/desktop_capture/screen_capture_frame_queue.h"
#include "modules/desktop_capture/shared_desktop_frame.h"
#include "modules/desktop_capture/win/display_configuration_monitor.h"
#include "modules/desktop_capture/win/scoped_thread_desktop.h"
#include "rtc_base/constructor_magic.h"
namespace webrtc {
// ScreenCapturerWinGdi captures 32bit RGB using GDI.
// ScreenCapturerWinGdi is double-buffered as required by ScreenCapturer.
// This class does not detect DesktopFrame::updated_region(), the field is
// always set to the entire frame rectangle. ScreenCapturerDifferWrapper should
// be used if that functionality is necessary.
class ScreenCapturerWinGdi : public DesktopCapturer {
explicit ScreenCapturerWinGdi(const DesktopCaptureOptions& options);
~ScreenCapturerWinGdi() override;
// Overridden from ScreenCapturer:
void Start(Callback* callback) override;
void SetSharedMemoryFactory(
std::unique_ptr<SharedMemoryFactory> shared_memory_factory) override;
void CaptureFrame() override;
bool GetSourceList(SourceList* sources) override;
bool SelectSource(SourceId id) override;
typedef HRESULT(WINAPI* DwmEnableCompositionFunc)(UINT);
// Make sure that the device contexts match the screen configuration.
void PrepareCaptureResources();
// Captures the current screen contents into the current buffer. Returns true
// if succeeded.
bool CaptureImage();
// Capture the current cursor shape.
void CaptureCursor();
Callback* callback_ = nullptr;
std::unique_ptr<SharedMemoryFactory> shared_memory_factory_;
SourceId current_screen_id_ = kFullDesktopScreenId;
std::wstring current_device_key_;
ScopedThreadDesktop desktop_;
// GDI resources used for screen capture.
HDC desktop_dc_ = NULL;
HDC memory_dc_ = NULL;
// Queue of the frames buffers.
ScreenCaptureFrameQueue<SharedDesktopFrame> queue_;
DisplayConfigurationMonitor display_configuration_monitor_;
HMODULE dwmapi_library_ = NULL;
DwmEnableCompositionFunc composition_func_ = nullptr;
} // namespace webrtc