1 files changed, 144 insertions, 0 deletions
diff --git a/third_party/libwebrtc/modules/desktop_capture/desktop_capturer.cc b/third_party/libwebrtc/modules/desktop_capture/desktop_capturer.cc
new file mode 100644
index 0000000000..7f601821fc
--- /dev/null
+++ b/third_party/libwebrtc/modules/desktop_capture/desktop_capturer.cc
@@ -0,0 +1,144 @@
+/*
+ *  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 "modules/desktop_capture/desktop_capturer.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <cstring>
+#include <utility>
+
+#include "modules/desktop_capture/cropping_window_capturer.h"
+#include "modules/desktop_capture/desktop_capture_options.h"
+#include "modules/desktop_capture/desktop_capturer_differ_wrapper.h"
+#include "system_wrappers/include/metrics.h"
+
+#if defined(RTC_ENABLE_WIN_WGC)
+#include "modules/desktop_capture/win/wgc_capturer_win.h"
+#include "rtc_base/win/windows_version.h"
+#endif  // defined(RTC_ENABLE_WIN_WGC)
+
+#if defined(WEBRTC_USE_PIPEWIRE)
+#include "modules/desktop_capture/linux/wayland/base_capturer_pipewire.h"
+#endif
+
+namespace webrtc {
+
+void LogDesktopCapturerFullscreenDetectorUsage() {
+  RTC_HISTOGRAM_BOOLEAN("WebRTC.Screenshare.DesktopCapturerFullscreenDetector",
+                        true);
+}
+
+DesktopCapturer::~DesktopCapturer() = default;
+
+DelegatedSourceListController*
+DesktopCapturer::GetDelegatedSourceListController() {
+  return nullptr;
+}
+
+void DesktopCapturer::SetSharedMemoryFactory(
+    std::unique_ptr<SharedMemoryFactory> shared_memory_factory) {}
+
+void DesktopCapturer::SetExcludedWindow(WindowId window) {}
+
+bool DesktopCapturer::GetSourceList(SourceList* sources) {
+  return true;
+}
+
+bool DesktopCapturer::SelectSource(SourceId id) {
+  return false;
+}
+
+bool DesktopCapturer::FocusOnSelectedSource() {
+  return false;
+}
+
+bool DesktopCapturer::IsOccluded(const DesktopVector& pos) {
+  return false;
+}
+
+// static
+std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateWindowCapturer(
+    const DesktopCaptureOptions& options) {
+#if defined(RTC_ENABLE_WIN_WGC)
+  if (options.allow_wgc_capturer() && IsWgcSupported(CaptureType::kWindow)) {
+    return WgcCapturerWin::CreateRawWindowCapturer(options);
+  }
+#endif  // defined(RTC_ENABLE_WIN_WGC)
+
+#if defined(WEBRTC_WIN)
+  if (options.allow_cropping_window_capturer()) {
+    return CroppingWindowCapturer::CreateCapturer(options);
+  }
+#endif  // defined(WEBRTC_WIN)
+
+  std::unique_ptr<DesktopCapturer> capturer = CreateRawWindowCapturer(options);
+  if (capturer && options.detect_updated_region()) {
+    capturer.reset(new DesktopCapturerDifferWrapper(std::move(capturer)));
+  }
+
+  return capturer;
+}
+
+// static
+std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateGenericCapturer(
+    const DesktopCaptureOptions& options) {
+  std::unique_ptr<DesktopCapturer> capturer = CreateRawGenericCapturer(options);
+  if (capturer && options.detect_updated_region()) {
+    capturer.reset(new DesktopCapturerDifferWrapper(std::move(capturer)));
+  }
+
+  return capturer;
+}
+
+std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateRawGenericCapturer(
+    const DesktopCaptureOptions& options) {
+#if defined(WEBRTC_USE_PIPEWIRE)
+  if (options.allow_pipewire() && DesktopCapturer::IsRunningUnderWayland()) {
+    return std::make_unique<BaseCapturerPipeWire>(options,
+                                                  CaptureType::kAnyScreenContent);
+  }
+#endif  // defined(WEBRTC_USE_PIPEWIRE)
+
+  return nullptr;
+}
+
+// static
+std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateScreenCapturer(
+    const DesktopCaptureOptions& options) {
+#if defined(RTC_ENABLE_WIN_WGC)
+  if (options.allow_wgc_capturer() && IsWgcSupported(CaptureType::kScreen)) {
+    return WgcCapturerWin::CreateRawScreenCapturer(options);
+  }
+#endif  // defined(RTC_ENABLE_WIN_WGC)
+
+  std::unique_ptr<DesktopCapturer> capturer = CreateRawScreenCapturer(options);
+  if (capturer && options.detect_updated_region()) {
+    capturer.reset(new DesktopCapturerDifferWrapper(std::move(capturer)));
+  }
+
+  return capturer;
+}
+
+#if defined(WEBRTC_USE_PIPEWIRE) || defined(WEBRTC_USE_X11)
+bool DesktopCapturer::IsRunningUnderWayland() {
+  const char* xdg_session_type = getenv("XDG_SESSION_TYPE");
+  if (!xdg_session_type || strncmp(xdg_session_type, "wayland", 7) != 0)
+    return false;
+
+  if (!(getenv("WAYLAND_DISPLAY")))
+    return false;
+
+  return true;
+}
+#endif  // defined(WEBRTC_USE_PIPEWIRE) || defined(WEBRTC_USE_X11)
+
+}  // namespace webrtc