screen_capturer_win.cc (2600B)
1 /* 2 * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 #include <memory> 12 #include <utility> 13 14 #include "modules/desktop_capture/blank_detector_desktop_capturer_wrapper.h" 15 #include "modules/desktop_capture/desktop_capture_options.h" 16 #include "modules/desktop_capture/desktop_capturer.h" 17 #include "modules/desktop_capture/fallback_desktop_capturer_wrapper.h" 18 #include "modules/desktop_capture/rgba_color.h" 19 #include "modules/desktop_capture/win/dxgi_duplicator_controller.h" 20 #include "modules/desktop_capture/win/screen_capturer_win_directx.h" 21 #include "modules/desktop_capture/win/screen_capturer_win_gdi.h" 22 #include "rtc_base/logging.h" 23 24 namespace webrtc { 25 26 namespace { 27 28 std::unique_ptr<DesktopCapturer> CreateScreenCapturerWinDirectx( 29 const DesktopCaptureOptions& options) { 30 RTC_LOG(LS_INFO) 31 << "video capture: DesktopCapturer::CreateRawScreenCapturer creates " 32 "DesktopCapturer of type ScreenCapturerWinDirectx"; 33 std::unique_ptr<DesktopCapturer> capturer( 34 new ScreenCapturerWinDirectx(options)); 35 capturer.reset(new BlankDetectorDesktopCapturerWrapper( 36 std::move(capturer), RgbaColor(0, 0, 0, 0))); 37 return capturer; 38 } 39 40 } // namespace 41 42 // static 43 std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateRawScreenCapturer( 44 const DesktopCaptureOptions& options) { 45 // Default capturer if no options are enabled is GDI. 46 RTC_LOG(LS_INFO) << "video capture: DesktopCapturer::CreateRawScreenCapturer " 47 "creates DesktopCapturer of type ScreenCapturerWinGdi"; 48 std::unique_ptr<DesktopCapturer> capturer(new ScreenCapturerWinGdi(options)); 49 50 // If DirectX is enabled use it as main capturer with GDI as fallback. 51 if (options.allow_directx_capturer()) { 52 // `dxgi_duplicator_controller` should be alive in this scope to ensure it 53 // won't unload DxgiDuplicatorController. 54 auto dxgi_duplicator_controller = DxgiDuplicatorController::Instance(); 55 if (ScreenCapturerWinDirectx::IsSupported()) { 56 capturer.reset(new FallbackDesktopCapturerWrapper( 57 CreateScreenCapturerWinDirectx(options), std::move(capturer))); 58 return capturer; 59 } 60 } 61 62 // Use GDI as default capturer without any fallback solution. 63 return capturer; 64 } 65 66 } // namespace webrtc