webrtc_m130/modules/desktop_capture/window_capturer_linux.cc
Jan Grulich 9b87037073 Improve screen sharing with PipeWire on Wayland
Currently, sharing a screen or a window on Wayland opens unnecessary
preview dialog on Chromium side, which is then followed by a similar
dialog on xdg-desktop-portal side. The Chromium dialog is useless on
Wayland, as it doesn't show anything. This is because Chromium doesn't
have access to screen content as in case of X11 session. To fix this, we
want to avoid showing the preview dialog in case we find that we run on
Wayland and only pick a screen or a window from the dialog that comes
from xdg-desktop-portal.

This patch splits BaseCapturerPipeWire class, moving portal related code
into XdgPortalBase, which does all the DBus communication and which is
supposed to be reused by BaseCapturerPipeWire when the user confirms
the dialog from xdg-desktop-portal. The XdgPortalBase is extended to
support multiple calls at once, where each call is identified by Id.

Relevant change on Chromium side will be in a different review.

Bug: chromium:682122
Change-Id: If8afd36da66231eb154cdc00114908ac897ee4cf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/160649
Commit-Queue: Tommi <tommi@webrtc.org>
Reviewed-by: Tommi <tommi@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#32342}
2020-10-07 12:58:28 +00:00

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/*
* Copyright 2018 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 <memory>
#include "modules/desktop_capture/desktop_capture_options.h"
#include "modules/desktop_capture/desktop_capturer.h"
#if defined(WEBRTC_USE_PIPEWIRE)
#include "modules/desktop_capture/linux/base_capturer_pipewire.h"
#endif // defined(WEBRTC_USE_PIPEWIRE)
#if defined(WEBRTC_USE_X11)
#include "modules/desktop_capture/linux/window_capturer_x11.h"
#endif // defined(WEBRTC_USE_X11)
namespace webrtc {
// static
std::unique_ptr<DesktopCapturer> DesktopCapturer::CreateRawWindowCapturer(
const DesktopCaptureOptions& options) {
#if defined(WEBRTC_USE_PIPEWIRE)
if (options.allow_pipewire() && DesktopCapturer::IsRunningUnderWayland()) {
return BaseCapturerPipeWire::CreateRawWindowCapturer(options);
}
#endif // defined(WEBRTC_USE_PIPEWIRE)
#if defined(WEBRTC_USE_X11)
return WindowCapturerX11::CreateRawWindowCapturer(options);
#endif // defined(WEBRTC_USE_X11)
return nullptr;
}
} // namespace webrtc