Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

13 files changed, 929 insertions, 0 deletions

diff --git a/third_party/libwebrtc/modules/portal/BUILD.gn b/third_party/libwebrtc/modules/portal/BUILD.gn
new file mode 100644
index 0000000000..d7768b2323
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/BUILD.gn
@@ -0,0 +1,148 @@
+# Copyright (c) 2022 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.
+
+import("//build/config/linux/pkg_config.gni")
+import("//tools/generate_stubs/rules.gni")
+import("../../webrtc.gni")
+
+if ((is_linux || is_chromeos) && rtc_use_pipewire) {
+if (!build_with_mozilla) {
+  pkg_config("gio") {
+    packages = [
+      "gio-2.0",
+      "gio-unix-2.0",
+    ]
+  }
+
+  pkg_config("pipewire") {
+    packages = [ "libpipewire-0.3" ]
+    if (!rtc_link_pipewire) {
+      ignore_libs = true
+    }
+  }
+
+  pkg_config("gbm") {
+    packages = [ "gbm" ]
+  }
+  pkg_config("egl") {
+    packages = [ "egl" ]
+  }
+  pkg_config("epoxy") {
+    packages = [ "epoxy" ]
+    ignore_libs = true
+  }
+  pkg_config("libdrm") {
+    packages = [ "libdrm" ]
+  }
+
+  if (!rtc_link_pipewire) {
+    # When libpipewire is not directly linked, use stubs to allow for dlopening of
+    # the binary.
+    generate_stubs("pipewire_stubs") {
+      configs = [
+        "../../:common_config",
+        ":pipewire",
+      ]
+      deps = [ "../../rtc_base:logging" ]
+      extra_header = "pipewire_stub_header.fragment"
+      logging_function = "RTC_LOG(LS_VERBOSE)"
+      logging_include = "rtc_base/logging.h"
+      output_name = "pipewire_stubs"
+      path_from_source = "modules/portal"
+      sigs = [ "pipewire.sigs" ]
+      if (!build_with_chromium) {
+        macro_include = "rtc_base/system/no_cfi_icall.h"
+        macro_deps = [ "../../rtc_base/system:no_cfi_icall" ]
+      }
+    }
+  }
+
+  config("pipewire_base") {
+    configs = [
+      ":gio",
+      ":pipewire",
+    ]
+  }
+
+  config("pipewire_all") {
+    configs = [
+      ":pipewire_base",
+      ":gbm",
+      ":egl",
+      ":epoxy",
+      ":libdrm",
+    ]
+  }
+
+  config("pipewire_config") {
+    defines = [ "WEBRTC_USE_PIPEWIRE" ]
+
+    # Chromecast build config overrides `WEBRTC_USE_PIPEWIRE` even when
+    # `rtc_use_pipewire` is not set, which causes pipewire_config to not be
+    # included in targets. More details in: webrtc:13898
+    if (is_linux && !is_castos) {
+      defines += [ "WEBRTC_USE_GIO" ]
+    }
+  }
+} else {
+  config("pipewire_all") {
+  }
+  config("pipewire_config") {
+  }
+}
+
+  rtc_library("portal") {
+    sources = [
+      "pipewire_utils.cc",
+      "pipewire_utils.h",
+      "portal_request_response.h",
+      "scoped_glib.cc",
+      "scoped_glib.h",
+      "xdg_desktop_portal_utils.cc",
+      "xdg_desktop_portal_utils.h",
+      "xdg_session_details.h",
+    ]
+
+    configs += [
+      ":gio",
+      ":pipewire",
+      ":pipewire_config",
+    ]
+
+    deps = [
+      "../../rtc_base:checks",
+      "../../rtc_base:logging",
+      "../../rtc_base:sanitizer",
+      "../../rtc_base/system:rtc_export",
+    ]
+    absl_deps = [ "//third_party/abseil-cpp/absl/strings" ]
+
+    if (!rtc_link_pipewire) {
+      defines = [ "WEBRTC_DLOPEN_PIPEWIRE" ]
+
+      deps += [ ":pipewire_stubs" ]
+    }
+
+    if (build_with_mozilla) {
+      configs -= [
+        ":gio",
+        ":pipewire",
+        ":pipewire_config",
+      ]
+      deps -= [ ":pipewire_stubs" ]
+      defines -= [ "WEBRTC_DLOPEN_PIPEWIRE" ]
+      public_deps = [
+        "//third_party/pipewire",
+        "//third_party/drm",
+        "//third_party/gbm",
+        "//third_party/libepoxy"
+      ]
+    }
+  }
+}
+
diff --git a/third_party/libwebrtc/modules/portal/OWNERS b/third_party/libwebrtc/modules/portal/OWNERS
new file mode 100644
index 0000000000..e3bc32ee5c
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/OWNERS
@@ -0,0 +1,2 @@
+alcooper@chromium.org
+mfoltz@chromium.org
diff --git a/third_party/libwebrtc/modules/portal/pipewire.sigs b/third_party/libwebrtc/modules/portal/pipewire.sigs
new file mode 100644
index 0000000000..c3abf05b38
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/pipewire.sigs
@@ -0,0 +1,56 @@
+// 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.
+
+//------------------------------------------------
+// Functions from PipeWire used in capturer code.
+//------------------------------------------------
+
+// core.h
+int pw_core_disconnect(pw_core *core);
+
+// loop.h
+void pw_loop_destroy(pw_loop *loop);
+pw_loop * pw_loop_new(const spa_dict *props);
+
+
+// pipewire.h
+void pw_init(int *argc, char **argv[]);
+const char* pw_get_library_version();
+
+// properties.h
+pw_properties * pw_properties_new_string(const char *args);
+
+// stream.h
+void pw_stream_add_listener(pw_stream *stream, spa_hook *listener, const pw_stream_events *events, void *data);
+int pw_stream_connect(pw_stream *stream, enum pw_direction direction, uint32_t target_id, enum pw_stream_flags flags, const spa_pod **params, uint32_t n_params);
+int pw_stream_disconnect(pw_stream *stream);
+pw_buffer *pw_stream_dequeue_buffer(pw_stream *stream);
+void pw_stream_destroy(pw_stream *stream);
+pw_stream * pw_stream_new(pw_core *core, const char *name, pw_properties *props);
+int pw_stream_queue_buffer(pw_stream *stream, pw_buffer *buffer);
+int pw_stream_set_active(pw_stream *stream, bool active);
+int pw_stream_update_params(pw_stream *stream, const spa_pod **params, uint32_t n_params);
+uint32_t pw_stream_get_node_id(pw_stream *stream);
+pw_stream_state pw_stream_get_state(pw_stream *stream, const char **error);
+const char * pw_stream_state_as_string(enum pw_stream_state state);
+
+// thread-loop.h
+void pw_thread_loop_destroy(pw_thread_loop *loop);
+pw_thread_loop * pw_thread_loop_new(const char *name, const spa_dict *props);
+int pw_thread_loop_start(pw_thread_loop *loop);
+void pw_thread_loop_stop(pw_thread_loop *loop);
+void pw_thread_loop_lock(pw_thread_loop *loop);
+void pw_thread_loop_unlock(pw_thread_loop *loop);
+pw_loop * pw_thread_loop_get_loop(pw_thread_loop *loop);
+void pw_thread_loop_signal(pw_thread_loop *loop, bool wait_for_accept);
+void pw_thread_loop_wait(pw_thread_loop *loop);
+
+// context.h
+void pw_context_destroy(pw_context *context);
+pw_context *pw_context_new(pw_loop *main_loop, pw_properties *props, size_t user_data_size);
+pw_core * pw_context_connect(pw_context *context, pw_properties *properties, size_t user_data_size);
+pw_core * pw_context_connect_fd(pw_context *context, int fd, pw_properties *properties, size_t user_data_size);
+
+// proxy.h
+void pw_proxy_destroy(struct pw_proxy *proxy);
diff --git a/third_party/libwebrtc/modules/portal/pipewire_stub_header.fragment b/third_party/libwebrtc/modules/portal/pipewire_stub_header.fragment
new file mode 100644
index 0000000000..9d7dbd27c5
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/pipewire_stub_header.fragment
@@ -0,0 +1,8 @@
+// The extra include header needed in the generated stub file for defining
+// various PipeWire types.
+
+extern "C" {
+
+#include <pipewire/pipewire.h>
+
+}
diff --git a/third_party/libwebrtc/modules/portal/pipewire_utils.cc b/third_party/libwebrtc/modules/portal/pipewire_utils.cc
new file mode 100644
index 0000000000..fd96b4a4db
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/pipewire_utils.cc
@@ -0,0 +1,53 @@
+/*
+ *  Copyright 2022 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/portal/pipewire_utils.h"
+
+#include <pipewire/pipewire.h>
+
+#include "rtc_base/sanitizer.h"
+
+#if defined(WEBRTC_DLOPEN_PIPEWIRE)
+#include "modules/portal/pipewire_stubs.h"
+#endif  // defined(WEBRTC_DLOPEN_PIPEWIRE)
+
+namespace webrtc {
+
+RTC_NO_SANITIZE("cfi-icall")
+bool InitializePipeWire() {
+#if defined(WEBRTC_DLOPEN_PIPEWIRE)
+  static constexpr char kPipeWireLib[] = "libpipewire-0.3.so.0";
+
+  using modules_portal::InitializeStubs;
+  using modules_portal::kModulePipewire;
+
+  modules_portal::StubPathMap paths;
+
+  // Check if the PipeWire library is available.
+  paths[kModulePipewire].push_back(kPipeWireLib);
+
+  static bool result = InitializeStubs(paths);
+
+  return result;
+#else
+  return true;
+#endif  // defined(WEBRTC_DLOPEN_PIPEWIRE)
+}
+
+PipeWireThreadLoopLock::PipeWireThreadLoopLock(pw_thread_loop* loop)
+    : loop_(loop) {
+  pw_thread_loop_lock(loop_);
+}
+
+PipeWireThreadLoopLock::~PipeWireThreadLoopLock() {
+  pw_thread_loop_unlock(loop_);
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/portal/pipewire_utils.h b/third_party/libwebrtc/modules/portal/pipewire_utils.h
new file mode 100644
index 0000000000..8344a8cefb
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/pipewire_utils.h
@@ -0,0 +1,37 @@
+/*
+ *  Copyright 2022 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.
+ */
+
+#ifndef MODULES_PORTAL_PIPEWIRE_UTILS_H_
+#define MODULES_PORTAL_PIPEWIRE_UTILS_H_
+
+struct pw_thread_loop;
+
+namespace webrtc {
+
+constexpr int kInvalidPipeWireFd = -1;
+
+// Prepare PipeWire so that it is ready to be used. If it needs to be dlopen'd
+// this will do so. Note that this does not guarantee a PipeWire server is
+// running nor does it establish a connection to one.
+bool InitializePipeWire();
+
+// Locks pw_thread_loop in the current scope
+class PipeWireThreadLoopLock {
+ public:
+  explicit PipeWireThreadLoopLock(pw_thread_loop* loop);
+  ~PipeWireThreadLoopLock();
+
+ private:
+  pw_thread_loop* const loop_;
+};
+
+}  // namespace webrtc
+
+#endif  // MODULES_PORTAL_PIPEWIRE_UTILS_H_
diff --git a/third_party/libwebrtc/modules/portal/portal_gn/moz.build b/third_party/libwebrtc/modules/portal/portal_gn/moz.build
new file mode 100644
index 0000000000..2760d7e5e1
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/portal_gn/moz.build
@@ -0,0 +1,110 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+
+  ### This moz.build was AUTOMATICALLY GENERATED from a GN config,  ###
+  ### DO NOT edit it by hand.                                       ###
+if CONFIG["MOZ_WIDGET_TOOLKIT"] == "gtk":
+    CXXFLAGS += CONFIG["MOZ_GTK3_CFLAGS"]
+
+COMPILE_FLAGS["OS_INCLUDES"] = []
+AllowCompilerWarnings()
+
+DEFINES["ABSL_ALLOCATOR_NOTHROW"] = "1"
+DEFINES["RTC_DAV1D_IN_INTERNAL_DECODER_FACTORY"] = True
+DEFINES["RTC_ENABLE_VP9"] = True
+DEFINES["USE_AURA"] = "1"
+DEFINES["USE_GLIB"] = "1"
+DEFINES["USE_NSS_CERTS"] = "1"
+DEFINES["USE_OZONE"] = "1"
+DEFINES["USE_UDEV"] = True
+DEFINES["WEBRTC_ENABLE_LIBEVENT"] = True
+DEFINES["WEBRTC_ENABLE_PROTOBUF"] = "0"
+DEFINES["WEBRTC_LIBRARY_IMPL"] = True
+DEFINES["WEBRTC_LINUX"] = True
+DEFINES["WEBRTC_MOZILLA_BUILD"] = True
+DEFINES["WEBRTC_NON_STATIC_TRACE_EVENT_HANDLERS"] = "0"
+DEFINES["WEBRTC_POSIX"] = True
+DEFINES["WEBRTC_STRICT_FIELD_TRIALS"] = "0"
+DEFINES["WEBRTC_USE_PIPEWIRE"] = True
+DEFINES["_FILE_OFFSET_BITS"] = "64"
+DEFINES["_GNU_SOURCE"] = True
+DEFINES["_LARGEFILE64_SOURCE"] = True
+DEFINES["_LARGEFILE_SOURCE"] = True
+DEFINES["__STDC_CONSTANT_MACROS"] = True
+DEFINES["__STDC_FORMAT_MACROS"] = True
+
+FINAL_LIBRARY = "webrtc"
+
+
+LOCAL_INCLUDES += [
+    "!/ipc/ipdl/_ipdlheaders",
+    "!/third_party/libwebrtc/gen",
+    "/gfx/angle/checkout/include/",
+    "/ipc/chromium/src",
+    "/third_party/drm/drm/",
+    "/third_party/drm/drm/include/",
+    "/third_party/drm/drm/include/libdrm/",
+    "/third_party/gbm/gbm/",
+    "/third_party/libepoxy/libepoxy/include/",
+    "/third_party/libwebrtc/",
+    "/third_party/libwebrtc/third_party/abseil-cpp/",
+    "/third_party/pipewire/",
+    "/tools/profiler/public"
+]
+
+UNIFIED_SOURCES += [
+    "/third_party/libwebrtc/modules/portal/pipewire_utils.cc",
+    "/third_party/libwebrtc/modules/portal/scoped_glib.cc",
+    "/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.cc"
+]
+
+if not CONFIG["MOZ_DEBUG"]:
+
+    DEFINES["DYNAMIC_ANNOTATIONS_ENABLED"] = "0"
+    DEFINES["NDEBUG"] = True
+    DEFINES["NVALGRIND"] = True
+
+if CONFIG["MOZ_DEBUG"] == "1":
+
+    DEFINES["DYNAMIC_ANNOTATIONS_ENABLED"] = "1"
+    DEFINES["_DEBUG"] = True
+
+if CONFIG["TARGET_CPU"] == "aarch64":
+
+    DEFINES["WEBRTC_ARCH_ARM64"] = True
+    DEFINES["WEBRTC_HAS_NEON"] = True
+
+if CONFIG["TARGET_CPU"] == "arm":
+
+    CXXFLAGS += [
+        "-mfpu=neon"
+    ]
+
+    DEFINES["WEBRTC_ARCH_ARM"] = True
+    DEFINES["WEBRTC_ARCH_ARM_V7"] = True
+    DEFINES["WEBRTC_HAS_NEON"] = True
+
+if CONFIG["TARGET_CPU"] == "mips32":
+
+    DEFINES["MIPS32_LE"] = True
+    DEFINES["MIPS_FPU_LE"] = True
+
+if CONFIG["TARGET_CPU"] == "x86":
+
+    CXXFLAGS += [
+        "-msse2"
+    ]
+
+    DEFINES["WEBRTC_ENABLE_AVX2"] = True
+
+if CONFIG["TARGET_CPU"] == "x86_64":
+
+    DEFINES["WEBRTC_ENABLE_AVX2"] = True
+
+if CONFIG["MOZ_X11"] == "1" and CONFIG["OS_TARGET"] == "Linux":
+
+    DEFINES["USE_X11"] = "1"
+
+Library("portal_gn")
diff --git a/third_party/libwebrtc/modules/portal/portal_request_response.h b/third_party/libwebrtc/modules/portal/portal_request_response.h
new file mode 100644
index 0000000000..5fac4eb137
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/portal_request_response.h
@@ -0,0 +1,34 @@
+/*
+ *  Copyright (c) 2022 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.
+ */
+
+#ifndef MODULES_PORTAL_PORTAL_REQUEST_RESPONSE_H_
+#define MODULES_PORTAL_PORTAL_REQUEST_RESPONSE_H_
+
+namespace webrtc {
+namespace xdg_portal {
+
+// Contains type of responses that can be observed when making a request to
+// a desktop portal interface.
+enum class RequestResponse {
+  // Unknown, the initialized status.
+  kUnknown,
+  // Success, the request is carried out.
+  kSuccess,
+  // The user cancelled the interaction.
+  kUserCancelled,
+  // The user interaction was ended in some other way.
+  kError,
+
+  kMaxValue = kError,
+};
+
+}  // namespace xdg_portal
+}  // namespace webrtc
+#endif  // MODULES_PORTAL_PORTAL_REQUEST_RESPONSE_H_
diff --git a/third_party/libwebrtc/modules/portal/scoped_glib.cc b/third_party/libwebrtc/modules/portal/scoped_glib.cc
new file mode 100644
index 0000000000..31ba8cb77a
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/scoped_glib.cc
@@ -0,0 +1,64 @@
+/*
+ *  Copyright 2022 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/portal/scoped_glib.h"
+
+namespace webrtc {
+
+template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) Scoped<GError>;
+template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) Scoped<char>;
+template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) Scoped<GVariant>;
+template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) Scoped<GVariantIter>;
+template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) Scoped<GDBusMessage>;
+template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) Scoped<GUnixFDList>;
+
+template <>
+Scoped<GError>::~Scoped() {
+  if (ptr_) {
+    g_error_free(ptr_);
+  }
+}
+
+template <>
+Scoped<char>::~Scoped() {
+  if (ptr_) {
+    g_free(ptr_);
+  }
+}
+
+template <>
+Scoped<GVariant>::~Scoped() {
+  if (ptr_) {
+    g_variant_unref(ptr_);
+  }
+}
+
+template <>
+Scoped<GVariantIter>::~Scoped() {
+  if (ptr_) {
+    g_variant_iter_free(ptr_);
+  }
+}
+
+template <>
+Scoped<GDBusMessage>::~Scoped() {
+  if (ptr_) {
+    g_object_unref(ptr_);
+  }
+}
+
+template <>
+Scoped<GUnixFDList>::~Scoped() {
+  if (ptr_) {
+    g_object_unref(ptr_);
+  }
+}
+
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/portal/scoped_glib.h b/third_party/libwebrtc/modules/portal/scoped_glib.h
new file mode 100644
index 0000000000..d97e47ae1f
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/scoped_glib.h
@@ -0,0 +1,76 @@
+/*
+ *  Copyright 2022 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.
+ */
+
+#ifndef MODULES_PORTAL_SCOPED_GLIB_H_
+#define MODULES_PORTAL_SCOPED_GLIB_H_
+
+#include <gio/gio.h>
+
+#include "rtc_base/checks.h"
+#include "rtc_base/system/rtc_export_template.h"
+
+namespace webrtc {
+
+template <class T>
+class Scoped {
+ public:
+  Scoped() {}
+  explicit Scoped(T* val) { ptr_ = val; }
+  ~Scoped() { RTC_DCHECK_NOTREACHED(); }
+
+  T* operator->() const { return ptr_; }
+
+  explicit operator bool() const { return ptr_ != nullptr; }
+
+  bool operator!() const { return ptr_ == nullptr; }
+
+  T* get() const { return ptr_; }
+
+  T** receive() {
+    RTC_CHECK(!ptr_);
+    return &ptr_;
+  }
+
+  Scoped& operator=(T* val) {
+    RTC_DCHECK(val);
+    ptr_ = val;
+    return *this;
+  }
+
+ protected:
+  T* ptr_ = nullptr;
+};
+
+template <>
+Scoped<GError>::~Scoped();
+template <>
+Scoped<char>::~Scoped();
+template <>
+Scoped<GVariant>::~Scoped();
+template <>
+Scoped<GVariantIter>::~Scoped();
+template <>
+Scoped<GDBusMessage>::~Scoped();
+template <>
+Scoped<GUnixFDList>::~Scoped();
+
+extern template class RTC_EXPORT_TEMPLATE_DECLARE(RTC_EXPORT) Scoped<GError>;
+extern template class RTC_EXPORT_TEMPLATE_DECLARE(RTC_EXPORT) Scoped<char>;
+extern template class RTC_EXPORT_TEMPLATE_DECLARE(RTC_EXPORT) Scoped<GVariant>;
+extern template class RTC_EXPORT_TEMPLATE_DECLARE(
+    RTC_EXPORT) Scoped<GVariantIter>;
+extern template class RTC_EXPORT_TEMPLATE_DECLARE(
+    RTC_EXPORT) Scoped<GDBusMessage>;
+extern template class RTC_EXPORT_TEMPLATE_DECLARE(
+    RTC_EXPORT) Scoped<GUnixFDList>;
+
+}  // namespace webrtc
+
+#endif  // MODULES_PORTAL_SCOPED_GLIB_H_
diff --git a/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.cc b/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.cc
new file mode 100644
index 0000000000..271e084463
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.cc
@@ -0,0 +1,195 @@
+/*
+ *  Copyright 2022 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/portal/xdg_desktop_portal_utils.h"
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+#include "modules/portal/scoped_glib.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+namespace xdg_portal {
+
+std::string RequestResponseToString(RequestResponse request) {
+  switch (request) {
+    case RequestResponse::kUnknown:
+      return "kUnknown";
+    case RequestResponse::kSuccess:
+      return "kSuccess";
+    case RequestResponse::kUserCancelled:
+      return "kUserCancelled";
+    case RequestResponse::kError:
+      return "kError";
+    default:
+      return "Uknown";
+  }
+}
+
+RequestResponse RequestResponseFromPortalResponse(uint32_t portal_response) {
+  // See:
+  //  https://docs.flatpak.org/en/latest/portal-api-reference.html#gdbus-signal-org-freedesktop-portal-Request.Response
+  switch (portal_response) {
+    case 0:
+      return RequestResponse::kSuccess;
+    case 1:
+      return RequestResponse::kUserCancelled;
+    case 2:
+      return RequestResponse::kError;
+    default:
+      return RequestResponse::kUnknown;
+  }
+}
+
+std::string PrepareSignalHandle(absl::string_view token,
+                                GDBusConnection* connection) {
+  Scoped<char> sender(
+      g_strdup(g_dbus_connection_get_unique_name(connection) + 1));
+  for (int i = 0; sender.get()[i]; ++i) {
+    if (sender.get()[i] == '.') {
+      sender.get()[i] = '_';
+    }
+  }
+  const char* handle =
+      g_strconcat(kDesktopRequestObjectPath, "/", sender.get(), "/",
+                  std::string(token).c_str(), /*end of varargs*/ nullptr);
+  return handle;
+}
+
+uint32_t SetupRequestResponseSignal(absl::string_view object_path,
+                                    const GDBusSignalCallback callback,
+                                    gpointer user_data,
+                                    GDBusConnection* connection) {
+  return g_dbus_connection_signal_subscribe(
+      connection, kDesktopBusName, kRequestInterfaceName, "Response",
+      std::string(object_path).c_str(), /*arg0=*/nullptr,
+      G_DBUS_SIGNAL_FLAGS_NO_MATCH_RULE, callback, user_data,
+      /*user_data_free_func=*/nullptr);
+}
+
+void RequestSessionProxy(absl::string_view interface_name,
+                         const ProxyRequestCallback proxy_request_callback,
+                         GCancellable* cancellable,
+                         gpointer user_data) {
+  g_dbus_proxy_new_for_bus(
+      G_BUS_TYPE_SESSION, G_DBUS_PROXY_FLAGS_NONE, /*info=*/nullptr,
+      kDesktopBusName, kDesktopObjectPath, std::string(interface_name).c_str(),
+      cancellable,
+      reinterpret_cast<GAsyncReadyCallback>(proxy_request_callback), user_data);
+}
+
+void SetupSessionRequestHandlers(
+    absl::string_view portal_prefix,
+    const SessionRequestCallback session_request_callback,
+    const SessionRequestResponseSignalHandler request_response_signale_handler,
+    GDBusConnection* connection,
+    GDBusProxy* proxy,
+    GCancellable* cancellable,
+    std::string& portal_handle,
+    guint& session_request_signal_id,
+    gpointer user_data) {
+  GVariantBuilder builder;
+  Scoped<char> variant_string;
+
+  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+  variant_string =
+      g_strdup_printf("%.*s_session%d", static_cast<int>(portal_prefix.size()),
+                      portal_prefix.data(), g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "session_handle_token",
+                        g_variant_new_string(variant_string.get()));
+
+  variant_string =
+      g_strdup_printf("%.*s_%d", static_cast<int>(portal_prefix.size()),
+                      portal_prefix.data(), g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "handle_token",
+                        g_variant_new_string(variant_string.get()));
+
+  portal_handle = PrepareSignalHandle(variant_string.get(), connection);
+  session_request_signal_id = SetupRequestResponseSignal(
+      portal_handle.c_str(), request_response_signale_handler, user_data,
+      connection);
+
+  RTC_LOG(LS_INFO) << "Desktop session requested.";
+  g_dbus_proxy_call(
+      proxy, "CreateSession", g_variant_new("(a{sv})", &builder),
+      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable,
+      reinterpret_cast<GAsyncReadyCallback>(session_request_callback),
+      user_data);
+}
+
+void StartSessionRequest(
+    absl::string_view prefix,
+    absl::string_view session_handle,
+    const StartRequestResponseSignalHandler signal_handler,
+    const SessionStartRequestedHandler session_started_handler,
+    GDBusProxy* proxy,
+    GDBusConnection* connection,
+    GCancellable* cancellable,
+    guint& start_request_signal_id,
+    std::string& start_handle,
+    gpointer user_data) {
+  GVariantBuilder builder;
+  Scoped<char> variant_string;
+
+  g_variant_builder_init(&builder, G_VARIANT_TYPE_VARDICT);
+  variant_string =
+      g_strdup_printf("%.*s%d", static_cast<int>(prefix.size()), prefix.data(),
+                      g_random_int_range(0, G_MAXINT));
+  g_variant_builder_add(&builder, "{sv}", "handle_token",
+                        g_variant_new_string(variant_string.get()));
+
+  start_handle = PrepareSignalHandle(variant_string.get(), connection);
+  start_request_signal_id = SetupRequestResponseSignal(
+      start_handle.c_str(), signal_handler, user_data, connection);
+
+  // "Identifier for the application window", this is Wayland, so not "x11:...".
+  const char parent_window[] = "";
+
+  RTC_LOG(LS_INFO) << "Starting the portal session.";
+  g_dbus_proxy_call(
+      proxy, "Start",
+      g_variant_new("(osa{sv})", std::string(session_handle).c_str(),
+                    parent_window, &builder),
+      G_DBUS_CALL_FLAGS_NONE, /*timeout=*/-1, cancellable,
+      reinterpret_cast<GAsyncReadyCallback>(session_started_handler),
+      user_data);
+}
+
+void TearDownSession(absl::string_view session_handle,
+                     GDBusProxy* proxy,
+                     GCancellable* cancellable,
+                     GDBusConnection* connection) {
+  if (!session_handle.empty()) {
+    Scoped<GDBusMessage> message(g_dbus_message_new_method_call(
+        kDesktopBusName, std::string(session_handle).c_str(),
+        kSessionInterfaceName, "Close"));
+    if (message.get()) {
+      Scoped<GError> error;
+      g_dbus_connection_send_message(connection, message.get(),
+                                     G_DBUS_SEND_MESSAGE_FLAGS_NONE,
+                                     /*out_serial=*/nullptr, error.receive());
+      if (error.get()) {
+        RTC_LOG(LS_ERROR) << "Failed to close the session: " << error->message;
+      }
+    }
+  }
+
+  if (cancellable) {
+    g_cancellable_cancel(cancellable);
+    g_object_unref(cancellable);
+  }
+
+  if (proxy) {
+    g_object_unref(proxy);
+  }
+}
+
+}  // namespace xdg_portal
+}  // namespace webrtc
diff --git a/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.h b/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.h
new file mode 100644
index 0000000000..eff46a01ab
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/xdg_desktop_portal_utils.h
@@ -0,0 +1,113 @@
+/*
+ *  Copyright 2022 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.
+ */
+
+#ifndef MODULES_PORTAL_XDG_DESKTOP_PORTAL_UTILS_H_
+#define MODULES_PORTAL_XDG_DESKTOP_PORTAL_UTILS_H_
+
+#include <gio/gio.h>
+#include <stdint.h>
+
+#include <string>
+#include <vector>
+
+#include "absl/strings/string_view.h"
+#include "modules/portal/portal_request_response.h"
+#include "modules/portal/scoped_glib.h"
+#include "modules/portal/xdg_session_details.h"
+#include "rtc_base/checks.h"
+#include "rtc_base/logging.h"
+
+namespace webrtc {
+namespace xdg_portal {
+
+constexpr char kDesktopBusName[] = "org.freedesktop.portal.Desktop";
+constexpr char kDesktopObjectPath[] = "/org/freedesktop/portal/desktop";
+constexpr char kDesktopRequestObjectPath[] =
+    "/org/freedesktop/portal/desktop/request";
+constexpr char kSessionInterfaceName[] = "org.freedesktop.portal.Session";
+constexpr char kRequestInterfaceName[] = "org.freedesktop.portal.Request";
+constexpr char kScreenCastInterfaceName[] = "org.freedesktop.portal.ScreenCast";
+
+using ProxyRequestCallback = void (*)(GObject*, GAsyncResult*, gpointer);
+using SessionRequestCallback = void (*)(GDBusProxy*, GAsyncResult*, gpointer);
+using SessionRequestResponseSignalHandler = void (*)(GDBusConnection*,
+                                                     const char*,
+                                                     const char*,
+                                                     const char*,
+                                                     const char*,
+                                                     GVariant*,
+                                                     gpointer);
+using StartRequestResponseSignalHandler = void (*)(GDBusConnection*,
+                                                   const char*,
+                                                   const char*,
+                                                   const char*,
+                                                   const char*,
+                                                   GVariant*,
+                                                   gpointer);
+using SessionStartRequestedHandler = void (*)(GDBusProxy*,
+                                              GAsyncResult*,
+                                              gpointer);
+
+RTC_EXPORT std::string RequestResponseToString(RequestResponse request);
+
+RequestResponse RequestResponseFromPortalResponse(uint32_t portal_response);
+
+// Returns a string path for signal handle based on the provided connection and
+// token.
+RTC_EXPORT std::string PrepareSignalHandle(absl::string_view token,
+                                           GDBusConnection* connection);
+
+// Sets up the callback to execute when a response signal is received for the
+// given object.
+RTC_EXPORT uint32_t
+SetupRequestResponseSignal(absl::string_view object_path,
+                           const GDBusSignalCallback callback,
+                           gpointer user_data,
+                           GDBusConnection* connection);
+
+RTC_EXPORT void RequestSessionProxy(
+    absl::string_view interface_name,
+    const ProxyRequestCallback proxy_request_callback,
+    GCancellable* cancellable,
+    gpointer user_data);
+
+RTC_EXPORT void SetupSessionRequestHandlers(
+    absl::string_view portal_prefix,
+    const SessionRequestCallback session_request_callback,
+    const SessionRequestResponseSignalHandler request_response_signale_handler,
+    GDBusConnection* connection,
+    GDBusProxy* proxy,
+    GCancellable* cancellable,
+    std::string& portal_handle,
+    guint& session_request_signal_id,
+    gpointer user_data);
+
+RTC_EXPORT void StartSessionRequest(
+    absl::string_view prefix,
+    absl::string_view session_handle,
+    const StartRequestResponseSignalHandler signal_handler,
+    const SessionStartRequestedHandler session_started_handler,
+    GDBusProxy* proxy,
+    GDBusConnection* connection,
+    GCancellable* cancellable,
+    guint& start_request_signal_id,
+    std::string& start_handle,
+    gpointer user_data);
+
+// Tears down the portal session and cleans up related objects.
+RTC_EXPORT void TearDownSession(absl::string_view session_handle,
+                                GDBusProxy* proxy,
+                                GCancellable* cancellable,
+                                GDBusConnection* connection);
+
+}  // namespace xdg_portal
+}  // namespace webrtc
+
+#endif  // MODULES_PORTAL_XDG_DESKTOP_PORTAL_UTILS_H_
diff --git a/third_party/libwebrtc/modules/portal/xdg_session_details.h b/third_party/libwebrtc/modules/portal/xdg_session_details.h
new file mode 100644
index 0000000000..ab52508c2f
--- /dev/null
+++ b/third_party/libwebrtc/modules/portal/xdg_session_details.h
@@ -0,0 +1,33 @@
+/*
+ *  Copyright 2022 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.
+ */
+
+#ifndef MODULES_PORTAL_XDG_SESSION_DETAILS_H_
+#define MODULES_PORTAL_XDG_SESSION_DETAILS_H_
+
+#include <gio/gio.h>
+
+#include <string>
+
+namespace webrtc {
+namespace xdg_portal {
+
+// Details of the session associated with XDG desktop portal session. Portal API
+// calls can be invoked by utilizing the information here.
+struct SessionDetails {
+  GDBusProxy* proxy = nullptr;
+  GCancellable* cancellable = nullptr;
+  std::string session_handle;
+  uint32_t pipewire_stream_node_id = 0;
+};
+
+}  // namespace xdg_portal
+}  // namespace webrtc
+
+#endif  // MODULES_PORTAL_XDG_SESSION_DETAILS_H_