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Reland "Default to dlopening the PipeWire."

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This is a reland of a13be019017449c57f48203d0fb778f34f7553a7

Original change's description:
> Default to dlopening the PipeWire.
>
> Reuse the existing infra from Chromium to do that. Additionally the
> target_gen_dir needs to the added to the include directories, otherwise
> the Chromium build will fail as it won't find the generated stubs. Also the
> pw_properties_new() was replaced with pw_properties_new_string() as it doesn't
> require a variadic parameter because the //tools/generate_stubs/generate_stubs.py
> doesn't work with them correctly. With all these changes in place the PipeWire
> support is enabled when compiling on Linux.
>
> Bug: chromium:682122
> Change-Id: I3bbc5efaecd9a08e20cbcf998b2cb534224eae7d
> Reviewed-on: https://webrtc-review.googlesource.com/c/111081
> Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
> Reviewed-by: Brave Yao <braveyao@webrtc.org>
> Commit-Queue: Tomáš Popela <tomas.popela@gmail.com>
> Cr-Commit-Position: refs/heads/master@{#25720}

Bug: chromium:682122
Change-Id: I3cca3d4d961dc7a088346c8fd3c970d3dfde3b79
Reviewed-on: https://webrtc-review.googlesource.com/c/113040
Reviewed-by: Weiyong Yao <braveyao@chromium.org>
Reviewed-by: Brave Yao <braveyao@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Reviewed-by: Oleh Prypin <oprypin@webrtc.org>
Commit-Queue: Oleh Prypin <oprypin@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25981}
This commit is contained in:
Tomas Popela
2018-12-11 08:04:01 +01:00
committed by Commit Bot
parent f6b10fbe4a
commit a099877d89
6 changed files with 143 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
BUILD.gn
View File

@ -131,6 +131,14 @@ config("common_inherited_config") {
# Allow includes to be prefixed with webrtc/ in case it is not an
# immediate subdirectory of the top-level.
".",
# Just like the root WebRTC directory is added to include path, the
# corresponding directory tree with generated files needs to be added too.
# Note: this path does not change depending on the current target, e.g.
# it is always "//gen/third_party/webrtc" when building with Chromium.
# See also: http://cs.chromium.org/?q=%5C"default_include_dirs
# https://gn.googlesource.com/gn/+/master/docs/reference.md#target_gen_dir
target_gen_dir,
]
}
if (is_posix || is_fuchsia) {

73
modules/desktop_capture/BUILD.gn
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@ -8,6 +8,7 @@
import("//build/config/linux/pkg_config.gni")
import("//build/config/ui.gni")
import("//tools/generate_stubs/rules.gni")
import("../../webrtc.gni")
use_desktop_capture_differ_sse2 = current_cpu == "x86" || current_cpu == "x64"
@ -166,18 +167,40 @@ if (rtc_include_tests) {
if (is_linux) {
if (rtc_use_pipewire) {
pkg_config("pipewire") {
packages = [ "libpipewire-0.2" ]
defines = [ "WEBRTC_USE_PIPEWIRE" ]
}
pkg_config("gio") {
packages = [
"gio-2.0",
"gio-unix-2.0",
]
}
if (rtc_link_pipewire) {
pkg_config("pipewire") {
packages = [ "libpipewire-0.2" ]
}
} else {
# When libpipewire is not directly linked, use stubs to allow for dlopening of
# the binary.
generate_stubs("pipewire_stubs") {
configs = [ "../../:common_config" ]
deps = [
"../../rtc_base",
]
extra_header = "linux/pipewire_stub_header.fragment"
logging_function = "RTC_LOG(LS_VERBOSE)"
logging_include = "rtc_base/logging.h"
output_name = "linux/pipewire_stubs"
path_from_source = "modules/desktop_capture/linux"
sigs = [ "linux/pipewire.sigs" ]
}
}
config("pipewire_config") {
defines = [ "WEBRTC_USE_PIPEWIRE" ]
if (!rtc_link_pipewire) {
defines += [ "WEBRTC_DLOPEN_PIPEWIRE" ]
}
}
}
}
@ -384,22 +407,6 @@ rtc_static_library("desktop_capture_generic") {
}
}
if (rtc_use_pipewire) {
sources += [
"linux/base_capturer_pipewire.cc",
"linux/base_capturer_pipewire.h",
"linux/screen_capturer_pipewire.cc",
"linux/screen_capturer_pipewire.h",
"linux/window_capturer_pipewire.cc",
"linux/window_capturer_pipewire.h",
]
configs += [
":gio",
":pipewire",
]
}
if (!is_win && !is_mac && !rtc_use_x11 && !rtc_use_pipewire) {
sources += [
"mouse_cursor_monitor_null.cc",
@ -438,6 +445,28 @@ rtc_static_library("desktop_capture_generic") {
if (use_desktop_capture_differ_sse2) {
deps += [ ":desktop_capture_differ_sse2" ]
}
if (rtc_use_pipewire) {
sources += [
"linux/base_capturer_pipewire.cc",
"linux/base_capturer_pipewire.h",
"linux/screen_capturer_pipewire.cc",
"linux/screen_capturer_pipewire.h",
"linux/window_capturer_pipewire.cc",
"linux/window_capturer_pipewire.h",
]
configs += [
":pipewire_config",
":gio",
]
if (rtc_link_pipewire) {
configs += [ ":pipewire" ]
} else {
deps += [ ":pipewire_stubs" ]
}
}
}
if (use_desktop_capture_differ_sse2) {

31
modules/desktop_capture/linux/base_capturer_pipewire.cc
View File

@ -27,6 +27,14 @@
#include "rtc_base/checks.h"
#include "rtc_base/logging.h"
#if defined(WEBRTC_DLOPEN_PIPEWIRE)
#include "modules/desktop_capture/linux/pipewire_stubs.h"
using modules_desktop_capture_linux::InitializeStubs;
using modules_desktop_capture_linux::kModulePipewire;
using modules_desktop_capture_linux::StubPathMap;
#endif // defined(WEBRTC_DLOPEN_PIPEWIRE)
namespace webrtc {
const char kDesktopBusName[] = "org.freedesktop.portal.Desktop";
@ -39,6 +47,10 @@ const char kScreenCastInterfaceName[] = "org.freedesktop.portal.ScreenCast";
const int kBytesPerPixel = 4;
#if defined(WEBRTC_DLOPEN_PIPEWIRE)
const char kPipeWireLib[] = "libpipewire-0.2.so.1";
#endif
// static
void BaseCapturerPipeWire::OnStateChanged(void* data,
pw_remote_state old_state,
@ -251,6 +263,18 @@ void BaseCapturerPipeWire::InitPortal() {
}
void BaseCapturerPipeWire::InitPipeWire() {
#if defined(WEBRTC_DLOPEN_PIPEWIRE)
StubPathMap paths;
// Check if the PipeWire library is available.
paths[kModulePipewire].push_back(kPipeWireLib);
if (!InitializeStubs(paths)) {
RTC_LOG(LS_ERROR) << "Failed to load the PipeWire library and symbols.";
portal_init_failed_ = true;
return;
}
#endif // defined(WEBRTC_DLOPEN_PIPEWIRE)
pw_init(/*argc=*/nullptr, /*argc=*/nullptr);
pw_loop_ = pw_loop_new(/*properties=*/nullptr);
@ -279,6 +303,8 @@ void BaseCapturerPipeWire::InitPipeWire() {
RTC_LOG(LS_ERROR) << "Failed to start main PipeWire loop";
portal_init_failed_ = true;
}
RTC_LOG(LS_INFO) << "PipeWire remote opened.";
}
void BaseCapturerPipeWire::InitPipeWireTypes() {
@ -300,8 +326,8 @@ void BaseCapturerPipeWire::CreateReceivingStream() {
spa_fraction pwFrameRateMin = spa_fraction{0, 1};
spa_fraction pwFrameRateMax = spa_fraction{60, 1};
pw_properties* reuseProps = pw_properties_new("pipewire.client.reuse", "1",
/*end of varargs*/ nullptr);
pw_properties* reuseProps =
pw_properties_new_string("pipewire.client.reuse=1");
pw_stream_ = pw_stream_new(pw_remote_, "webrtc-consume-stream", reuseProps);
uint8_t buffer[1024] = {};
@ -793,7 +819,6 @@ void BaseCapturerPipeWire::OnOpenPipeWireRemoteRequested(
g_object_unref(outlist);
that->InitPipeWire();
RTC_LOG(LS_INFO) << "PipeWire remote opened.";
}
void BaseCapturerPipeWire::Start(Callback* callback) {

44
modules/desktop_capture/linux/pipewire.sigs Normal file
View File

@ -0,0 +1,44 @@
// 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
void pw_core_destroy(pw_core *core);
pw_type *pw_core_get_type(pw_core *core);
pw_core * pw_core_new(pw_loop *main_loop, pw_properties *props);
// loop.h
void pw_loop_destroy(pw_loop *loop);
pw_loop * pw_loop_new(pw_properties *properties);
// pipewire.h
void pw_init(int *argc, char **argv[]);
// properties.h
pw_properties * pw_properties_new_string(const char *args);
// remote.h
void pw_remote_add_listener(pw_remote *remote, spa_hook *listener, const pw_remote_events *events, void *data);
int pw_remote_connect_fd(pw_remote *remote, int fd);
void pw_remote_destroy(pw_remote *remote);
pw_remote * pw_remote_new(pw_core *core, pw_properties *properties, size_t user_data_size);
// 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, const char *port_path, enum pw_stream_flags flags, const spa_pod **params, uint32_t n_params);
pw_buffer *pw_stream_dequeue_buffer(pw_stream *stream);
void pw_stream_destroy(pw_stream *stream);
void pw_stream_finish_format(pw_stream *stream, int res, const spa_pod **params, uint32_t n_params);
pw_stream * pw_stream_new(pw_remote *remote, 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);
// thread-loop.h
void pw_thread_loop_destroy(pw_thread_loop *loop);
pw_thread_loop * pw_thread_loop_new(pw_loop *loop, const char *name);
int pw_thread_loop_start(pw_thread_loop *loop);
void pw_thread_loop_stop(pw_thread_loop *loop);

8
modules/desktop_capture/linux/pipewire_stub_header.fragment Normal file
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@ -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>
}

5
webrtc.gni
View File

@ -109,7 +109,10 @@ declare_args() {
rtc_use_x11 = use_x11
# Set this to use PipeWire on the Wayland display server.
rtc_use_pipewire = false
rtc_use_pipewire = is_linux && use_sysroot
# Set this to link PipeWire directly instead of using the dlopen.
rtc_link_pipewire = false
# Enable to use the Mozilla internal settings.
build_with_mozilla = false