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/*
* 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_window_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::CreateScreenCapturer(
const DesktopCaptureOptions& options) {
#if defined(RTC_ENABLE_WIN_WGC)
if (options.allow_wgc_screen_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;
}
// static
std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateGenericCapturer(
[[maybe_unused]] const DesktopCaptureOptions& options) {
std::unique_ptr<DesktopCapturer> capturer;
#if defined(WEBRTC_USE_PIPEWIRE)
if (options.allow_pipewire() && DesktopCapturer::IsRunningUnderWayland()) {
capturer = std::make_unique<BaseCapturerPipeWire>(
options, CaptureType::kAnyScreenContent);
}
if (capturer && options.detect_updated_region()) {
capturer.reset(new DesktopCapturerDifferWrapper(std::move(capturer)));
}
#endif // defined(WEBRTC_USE_PIPEWIRE)
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