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Update Wireplumber API to 0.5 

The WP component loader API has changed to be asynchronous, so implement a (GAsyncReadyCallback)-based loader to manage them. Logging integration change was required for 0.5.0 RCs but not for the 0.5.0 release.

Fix clang-tidy and clang-format warnings. Note these are significantly wider than the changes for 0.5.0 so optional beyond the existing patchset.
This commit is contained in:
Ryan Walklin 2024-02-15 09:37:36 +13:00
parent 2c927de4c6
commit 2326727ccb
3 changed files with 117 additions and 84 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/modules/wireplumber.hpp
View File

@ -17,12 +17,15 @@ class Wireplumber : public ALabel {
auto update() -> void override; auto update() -> void override;
private: private:
void loadRequiredApiModules(); void asyncLoadRequiredApiModules();
void prepare(); void prepare();
void activatePlugins(); void activatePlugins();
static void updateVolume(waybar::modules::Wireplumber* self, uint32_t id); static void updateVolume(waybar::modules::Wireplumber* self, uint32_t id);
static void updateNodeName(waybar::modules::Wireplumber* self, uint32_t id); static void updateNodeName(waybar::modules::Wireplumber* self, uint32_t id);
static void onPluginActivated(WpObject* p, GAsyncResult* res, waybar::modules::Wireplumber* self); static void onPluginActivated(WpObject* p, GAsyncResult* res, waybar::modules::Wireplumber* self);
static void onDefaultNodesApiLoaded(WpObject* p, GAsyncResult* res,
waybar::modules::Wireplumber* self);
static void onMixerApiLoaded(WpObject* p, GAsyncResult* res, waybar::modules::Wireplumber* self);
static void onObjectManagerInstalled(waybar::modules::Wireplumber* self); static void onObjectManagerInstalled(waybar::modules::Wireplumber* self);
static void onMixerChanged(waybar::modules::Wireplumber* self, uint32_t id); static void onMixerChanged(waybar::modules::Wireplumber* self, uint32_t id);
static void onDefaultNodesApiChanged(waybar::modules::Wireplumber* self); static void onDefaultNodesApiChanged(waybar::modules::Wireplumber* self);

2
meson.build
View File

@ -92,7 +92,7 @@ libevdev = dependency('libevdev', required: get_option('libevdev'))
libmpdclient = dependency('libmpdclient', required: get_option('mpd')) libmpdclient = dependency('libmpdclient', required: get_option('mpd'))
xkbregistry = dependency('xkbregistry') xkbregistry = dependency('xkbregistry')
libjack = dependency('jack', required: get_option('jack')) libjack = dependency('jack', required: get_option('jack'))
libwireplumber = dependency('wireplumber-0.4', required: get_option('wireplumber')) libwireplumber = dependency('wireplumber-0.5', required: get_option('wireplumber'))
libsndio = compiler.find_library('sndio', required: get_option('sndio')) libsndio = compiler.find_library('sndio', required: get_option('sndio'))
if libsndio.found() if libsndio.found()

194
src/modules/wireplumber.cpp
View File

@ -18,31 +18,24 @@ waybar::modules::Wireplumber::Wireplumber(const std::string& id, const Json::Val
min_step_(0.0), min_step_(0.0),
node_id_(0) { node_id_(0) {
wp_init(WP_INIT_PIPEWIRE); wp_init(WP_INIT_PIPEWIRE);
wp_core_ = wp_core_new(NULL, NULL); wp_core_ = wp_core_new(nullptr, nullptr, nullptr);
apis_ = g_ptr_array_new_with_free_func(g_object_unref); apis_ = g_ptr_array_new_with_free_func(g_object_unref);
om_ = wp_object_manager_new(); om_ = wp_object_manager_new();
prepare(); prepare();
loadRequiredApiModules(); spdlog::debug("[{}]: connecting to pipewire...", name_);
spdlog::debug("[{}]: connecting to pipewire...", this->name_); if (wp_core_connect(wp_core_) == 0) {
spdlog::error("[{}]: Could not connect to PipeWire", name_);
if (!wp_core_connect(wp_core_)) {
spdlog::error("[{}]: Could not connect to PipeWire", this->name_);
throw std::runtime_error("Could not connect to PipeWire\n"); throw std::runtime_error("Could not connect to PipeWire\n");
} }
spdlog::debug("[{}]: connected!", this->name_); spdlog::debug("[{}]: connected!", name_);
g_signal_connect_swapped(om_, "installed", (GCallback)onObjectManagerInstalled, this); g_signal_connect_swapped(om_, "installed", (GCallback)onObjectManagerInstalled, this);
activatePlugins(); asyncLoadRequiredApiModules();
dp.emit();
event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
event_box_.signal_scroll_event().connect(sigc::mem_fun(*this, &Wireplumber::handleScroll));
} }
waybar::modules::Wireplumber::~Wireplumber() { waybar::modules::Wireplumber::~Wireplumber() {
@ -63,32 +56,36 @@ void waybar::modules::Wireplumber::updateNodeName(waybar::modules::Wireplumber*
return; return;
} }
auto proxy = static_cast<WpProxy*>(wp_object_manager_lookup( auto* proxy = static_cast<WpProxy*>(wp_object_manager_lookup(self->om_, WP_TYPE_GLOBAL_PROXY,
self->om_, WP_TYPE_GLOBAL_PROXY, WP_CONSTRAINT_TYPE_G_PROPERTY, "bound-id", "=u", id, NULL)); WP_CONSTRAINT_TYPE_G_PROPERTY,
"bound-id", "=u", id, nullptr));
if (!proxy) { if (proxy == nullptr) {
auto err = fmt::format("Object '{}' not found\n", id); auto err = fmt::format("Object '{}' not found\n", id);
spdlog::error("[{}]: {}", self->name_, err); spdlog::error("[{}]: {}", self->name_, err);
throw std::runtime_error(err); throw std::runtime_error(err);
} }
g_autoptr(WpProperties) properties = g_autoptr(WpProperties) properties =
WP_IS_PIPEWIRE_OBJECT(proxy) ? wp_pipewire_object_get_properties(WP_PIPEWIRE_OBJECT(proxy)) WP_IS_PIPEWIRE_OBJECT(proxy) != 0
: wp_properties_new_empty(); ? wp_pipewire_object_get_properties(WP_PIPEWIRE_OBJECT(proxy))
g_autoptr(WpProperties) global_p = wp_global_proxy_get_global_properties(WP_GLOBAL_PROXY(proxy)); : wp_properties_new_empty();
g_autoptr(WpProperties) globalP = wp_global_proxy_get_global_properties(WP_GLOBAL_PROXY(proxy));
properties = wp_properties_ensure_unique_owner(properties); properties = wp_properties_ensure_unique_owner(properties);
wp_properties_add(properties, global_p); wp_properties_add(properties, globalP);
wp_properties_set(properties, "object.id", NULL); wp_properties_set(properties, "object.id", nullptr);
auto nick = wp_properties_get(properties, "node.nick"); const auto* nick = wp_properties_get(properties, "node.nick");
auto description = wp_properties_get(properties, "node.description"); const auto* description = wp_properties_get(properties, "node.description");
self->node_name_ = nick ? nick : description ? description : "Unknown node name"; self->node_name_ = nick != nullptr ? nick
: description != nullptr ? description
: "Unknown node name";
spdlog::debug("[{}]: Updating node name to: {}", self->name_, self->node_name_); spdlog::debug("[{}]: Updating node name to: {}", self->name_, self->node_name_);
} }
void waybar::modules::Wireplumber::updateVolume(waybar::modules::Wireplumber* self, uint32_t id) { void waybar::modules::Wireplumber::updateVolume(waybar::modules::Wireplumber* self, uint32_t id) {
spdlog::debug("[{}]: updating volume", self->name_); spdlog::debug("[{}]: updating volume", self->name_);
GVariant* variant = NULL; GVariant* variant = nullptr;
if (!isValidNodeId(id)) { if (!isValidNodeId(id)) {
spdlog::error("[{}]: '{}' is not a valid node ID. Ignoring volume update.", self->name_, id); spdlog::error("[{}]: '{}' is not a valid node ID. Ignoring volume update.", self->name_, id);
@ -97,7 +94,7 @@ void waybar::modules::Wireplumber::updateVolume(waybar::modules::Wireplumber* se
g_signal_emit_by_name(self->mixer_api_, "get-volume", id, &variant); g_signal_emit_by_name(self->mixer_api_, "get-volume", id, &variant);
if (!variant) { if (variant == nullptr) {
auto err = fmt::format("Node {} does not support volume\n", id); auto err = fmt::format("Node {} does not support volume\n", id);
spdlog::error("[{}]: {}", self->name_, err); spdlog::error("[{}]: {}", self->name_, err);
throw std::runtime_error(err); throw std::runtime_error(err);
@ -115,9 +112,9 @@ void waybar::modules::Wireplumber::onMixerChanged(waybar::modules::Wireplumber*
spdlog::debug("[{}]: (onMixerChanged) - id: {}", self->name_, id); spdlog::debug("[{}]: (onMixerChanged) - id: {}", self->name_, id);
g_autoptr(WpNode) node = static_cast<WpNode*>(wp_object_manager_lookup( g_autoptr(WpNode) node = static_cast<WpNode*>(wp_object_manager_lookup(
self->om_, WP_TYPE_NODE, WP_CONSTRAINT_TYPE_G_PROPERTY, "bound-id", "=u", id, NULL)); self->om_, WP_TYPE_NODE, WP_CONSTRAINT_TYPE_G_PROPERTY, "bound-id", "=u", id, nullptr));
if (!node) { if (node == nullptr) {
spdlog::warn("[{}]: (onMixerChanged) - Object with id {} not found", self->name_, id); spdlog::warn("[{}]: (onMixerChanged) - Object with id {} not found", self->name_, id);
return; return;
} }
@ -140,49 +137,49 @@ void waybar::modules::Wireplumber::onMixerChanged(waybar::modules::Wireplumber*
void waybar::modules::Wireplumber::onDefaultNodesApiChanged(waybar::modules::Wireplumber* self) { void waybar::modules::Wireplumber::onDefaultNodesApiChanged(waybar::modules::Wireplumber* self) {
spdlog::debug("[{}]: (onDefaultNodesApiChanged)", self->name_); spdlog::debug("[{}]: (onDefaultNodesApiChanged)", self->name_);
uint32_t default_node_id; uint32_t defaultNodeId;
g_signal_emit_by_name(self->def_nodes_api_, "get-default-node", "Audio/Sink", &default_node_id); g_signal_emit_by_name(self->def_nodes_api_, "get-default-node", "Audio/Sink", &defaultNodeId);
if (!isValidNodeId(default_node_id)) { if (!isValidNodeId(defaultNodeId)) {
spdlog::warn("[{}]: '{}' is not a valid node ID. Ignoring node change.", self->name_, spdlog::warn("[{}]: '{}' is not a valid node ID. Ignoring node change.", self->name_,
default_node_id); defaultNodeId);
return; return;
} }
g_autoptr(WpNode) node = static_cast<WpNode*>( g_autoptr(WpNode) node = static_cast<WpNode*>(
wp_object_manager_lookup(self->om_, WP_TYPE_NODE, WP_CONSTRAINT_TYPE_G_PROPERTY, "bound-id", wp_object_manager_lookup(self->om_, WP_TYPE_NODE, WP_CONSTRAINT_TYPE_G_PROPERTY, "bound-id",
"=u", default_node_id, NULL)); "=u", defaultNodeId, nullptr));
if (!node) { if (node == nullptr) {
spdlog::warn("[{}]: (onDefaultNodesApiChanged) - Object with id {} not found", self->name_, spdlog::warn("[{}]: (onDefaultNodesApiChanged) - Object with id {} not found", self->name_,
default_node_id); defaultNodeId);
return; return;
} }
const gchar* default_node_name = const gchar* defaultNodeName =
wp_pipewire_object_get_property(WP_PIPEWIRE_OBJECT(node), "node.name"); wp_pipewire_object_get_property(WP_PIPEWIRE_OBJECT(node), "node.name");
spdlog::debug( spdlog::debug(
"[{}]: (onDefaultNodesApiChanged) - got the following default node: Node(name: {}, id: {})", "[{}]: (onDefaultNodesApiChanged) - got the following default node: Node(name: {}, id: {})",
self->name_, default_node_name, default_node_id); self->name_, defaultNodeName, defaultNodeId);
if (g_strcmp0(self->default_node_name_, default_node_name) == 0) { if (g_strcmp0(self->default_node_name_, defaultNodeName) == 0) {
spdlog::debug( spdlog::debug(
"[{}]: (onDefaultNodesApiChanged) - Default node has not changed. Node(name: {}, id: {}). " "[{}]: (onDefaultNodesApiChanged) - Default node has not changed. Node(name: {}, id: {}). "
"Ignoring.", "Ignoring.",
self->name_, self->default_node_name_, default_node_id); self->name_, self->default_node_name_, defaultNodeId);
return; return;
} }
spdlog::debug( spdlog::debug(
"[{}]: (onDefaultNodesApiChanged) - Default node changed to -> Node(name: {}, id: {})", "[{}]: (onDefaultNodesApiChanged) - Default node changed to -> Node(name: {}, id: {})",
self->name_, default_node_name, default_node_id); self->name_, defaultNodeName, defaultNodeId);
g_free(self->default_node_name_); g_free(self->default_node_name_);
self->default_node_name_ = g_strdup(default_node_name); self->default_node_name_ = g_strdup(defaultNodeName);
self->node_id_ = default_node_id; self->node_id_ = defaultNodeId;
updateVolume(self, default_node_id); updateVolume(self, defaultNodeId);
updateNodeName(self, default_node_id); updateNodeName(self, defaultNodeId);
} }
void waybar::modules::Wireplumber::onObjectManagerInstalled(waybar::modules::Wireplumber* self) { void waybar::modules::Wireplumber::onObjectManagerInstalled(waybar::modules::Wireplumber* self) {
@ -190,14 +187,14 @@ void waybar::modules::Wireplumber::onObjectManagerInstalled(waybar::modules::Wir
self->def_nodes_api_ = wp_plugin_find(self->wp_core_, "default-nodes-api"); self->def_nodes_api_ = wp_plugin_find(self->wp_core_, "default-nodes-api");
if (!self->def_nodes_api_) { if (self->def_nodes_api_ == nullptr) {
spdlog::error("[{}]: default nodes api is not loaded.", self->name_); spdlog::error("[{}]: default nodes api is not loaded.", self->name_);
throw std::runtime_error("Default nodes API is not loaded\n"); throw std::runtime_error("Default nodes API is not loaded\n");
} }
self->mixer_api_ = wp_plugin_find(self->wp_core_, "mixer-api"); self->mixer_api_ = wp_plugin_find(self->wp_core_, "mixer-api");
if (!self->mixer_api_) { if (self->mixer_api_ == nullptr) {
spdlog::error("[{}]: mixer api is not loaded.", self->name_); spdlog::error("[{}]: mixer api is not loaded.", self->name_);
throw std::runtime_error("Mixer api is not loaded\n"); throw std::runtime_error("Mixer api is not loaded\n");
} }
@ -206,7 +203,7 @@ void waybar::modules::Wireplumber::onObjectManagerInstalled(waybar::modules::Wir
&self->default_node_name_); &self->default_node_name_);
g_signal_emit_by_name(self->def_nodes_api_, "get-default-node", "Audio/Sink", &self->node_id_); g_signal_emit_by_name(self->def_nodes_api_, "get-default-node", "Audio/Sink", &self->node_id_);
if (self->default_node_name_) { if (self->default_node_name_ != nullptr) {
spdlog::debug("[{}]: (onObjectManagerInstalled) - default configured node name: {} and id: {}", spdlog::debug("[{}]: (onObjectManagerInstalled) - default configured node name: {} and id: {}",
self->name_, self->default_node_name_, self->node_id_); self->name_, self->default_node_name_, self->node_id_);
} }
@ -221,11 +218,11 @@ void waybar::modules::Wireplumber::onObjectManagerInstalled(waybar::modules::Wir
void waybar::modules::Wireplumber::onPluginActivated(WpObject* p, GAsyncResult* res, void waybar::modules::Wireplumber::onPluginActivated(WpObject* p, GAsyncResult* res,
waybar::modules::Wireplumber* self) { waybar::modules::Wireplumber* self) {
auto plugin_name = wp_plugin_get_name(WP_PLUGIN(p)); const auto* pluginName = wp_plugin_get_name(WP_PLUGIN(p));
spdlog::debug("[{}]: onPluginActivated: {}", self->name_, plugin_name); spdlog::debug("[{}]: onPluginActivated: {}", self->name_, pluginName);
g_autoptr(GError) error = NULL; g_autoptr(GError) error = nullptr;
if (!wp_object_activate_finish(p, res, &error)) { if (wp_object_activate_finish(p, res, &error) == 0) {
spdlog::error("[{}]: error activating plugin: {}", self->name_, error->message); spdlog::error("[{}]: error activating plugin: {}", self->name_, error->message);
throw std::runtime_error(error->message); throw std::runtime_error(error->message);
} }
@ -240,7 +237,7 @@ void waybar::modules::Wireplumber::activatePlugins() {
for (uint16_t i = 0; i < apis_->len; i++) { for (uint16_t i = 0; i < apis_->len; i++) {
WpPlugin* plugin = static_cast<WpPlugin*>(g_ptr_array_index(apis_, i)); WpPlugin* plugin = static_cast<WpPlugin*>(g_ptr_array_index(apis_, i));
pending_plugins_++; pending_plugins_++;
wp_object_activate(WP_OBJECT(plugin), WP_PLUGIN_FEATURE_ENABLED, NULL, wp_object_activate(WP_OBJECT(plugin), WP_PLUGIN_FEATURE_ENABLED, nullptr,
(GAsyncReadyCallback)onPluginActivated, this); (GAsyncReadyCallback)onPluginActivated, this);
} }
} }
@ -248,34 +245,67 @@ void waybar::modules::Wireplumber::activatePlugins() {
void waybar::modules::Wireplumber::prepare() { void waybar::modules::Wireplumber::prepare() {
spdlog::debug("[{}]: preparing object manager", name_); spdlog::debug("[{}]: preparing object manager", name_);
wp_object_manager_add_interest(om_, WP_TYPE_NODE, WP_CONSTRAINT_TYPE_PW_PROPERTY, "media.class", wp_object_manager_add_interest(om_, WP_TYPE_NODE, WP_CONSTRAINT_TYPE_PW_PROPERTY, "media.class",
"=s", "Audio/Sink", NULL); "=s", "Audio/Sink", nullptr);
} }
void waybar::modules::Wireplumber::loadRequiredApiModules() { void waybar::modules::Wireplumber::onDefaultNodesApiLoaded(WpObject* p, GAsyncResult* res,
spdlog::debug("[{}]: loading required modules", name_); waybar::modules::Wireplumber* self) {
g_autoptr(GError) error = NULL; gboolean success = FALSE;
g_autoptr(GError) error = nullptr;
if (!wp_core_load_component(wp_core_, "libwireplumber-module-default-nodes-api", "module", NULL, spdlog::debug("[{}]: callback loading default node api module", self->name_);
&error)) {
success = wp_core_load_component_finish(self->wp_core_, res, &error);
if (success == FALSE) {
spdlog::error("[{}]: default nodes API load failed", self->name_);
throw std::runtime_error(error->message);
}
spdlog::debug("[{}]: loaded default nodes api", self->name_);
g_ptr_array_add(self->apis_, wp_plugin_find(self->wp_core_, "default-nodes-api"));
spdlog::debug("[{}]: loading mixer api module", self->name_);
wp_core_load_component(self->wp_core_, "libwireplumber-module-mixer-api", "module", nullptr,
"mixer-api", nullptr, (GAsyncReadyCallback)onMixerApiLoaded, self);
}
void waybar::modules::Wireplumber::onMixerApiLoaded(WpObject* p, GAsyncResult* res,
waybar::modules::Wireplumber* self) {
gboolean success = FALSE;
g_autoptr(GError) error = nullptr;
success = wp_core_load_component_finish(self->wp_core_, res, nullptr);
if (success == FALSE) {
spdlog::error("[{}]: mixer API load failed", self->name_);
throw std::runtime_error(error->message); throw std::runtime_error(error->message);
} }
if (!wp_core_load_component(wp_core_, "libwireplumber-module-mixer-api", "module", NULL, spdlog::debug("[{}]: loaded mixer API", self->name_);
&error)) { g_ptr_array_add(self->apis_, ({
throw std::runtime_error(error->message); WpPlugin* p = wp_plugin_find(self->wp_core_, "mixer-api");
} g_object_set(G_OBJECT(p), "scale", 1 /* cubic */, nullptr);
g_ptr_array_add(apis_, wp_plugin_find(wp_core_, "default-nodes-api"));
g_ptr_array_add(apis_, ({
WpPlugin* p = wp_plugin_find(wp_core_, "mixer-api");
g_object_set(G_OBJECT(p), "scale", 1 /* cubic */, NULL);
p; p;
})); }));
self->activatePlugins();
self->dp.emit();
self->event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
self->event_box_.signal_scroll_event().connect(sigc::mem_fun(*self, &Wireplumber::handleScroll));
}
void waybar::modules::Wireplumber::asyncLoadRequiredApiModules() {
spdlog::debug("[{}]: loading default nodes api module", name_);
wp_core_load_component(wp_core_, "libwireplumber-module-default-nodes-api", "module", nullptr,
"default-nodes-api", nullptr, (GAsyncReadyCallback)onDefaultNodesApiLoaded,
this);
} }
auto waybar::modules::Wireplumber::update() -> void { auto waybar::modules::Wireplumber::update() -> void {
auto format = format_; auto format = format_;
std::string tooltip_format; std::string tooltipFormat;
if (muted_) { if (muted_) {
format = config_["format-muted"].isString() ? config_["format-muted"].asString() : format; format = config_["format-muted"].isString() ? config_["format-muted"].asString() : format;
@ -292,12 +322,12 @@ auto waybar::modules::Wireplumber::update() -> void {
getState(vol); getState(vol);
if (tooltipEnabled()) { if (tooltipEnabled()) {
if (tooltip_format.empty() && config_["tooltip-format"].isString()) { if (tooltipFormat.empty() && config_["tooltip-format"].isString()) {
tooltip_format = config_["tooltip-format"].asString(); tooltipFormat = config_["tooltip-format"].asString();
} }
if (!tooltip_format.empty()) { if (!tooltipFormat.empty()) {
label_.set_tooltip_text(fmt::format(fmt::runtime(tooltip_format), label_.set_tooltip_text(fmt::format(fmt::runtime(tooltipFormat),
fmt::arg("node_name", node_name_), fmt::arg("node_name", node_name_),
fmt::arg("volume", vol), fmt::arg("icon", getIcon(vol)))); fmt::arg("volume", vol), fmt::arg("icon", getIcon(vol))));
} else { } else {
@ -317,31 +347,31 @@ bool waybar::modules::Wireplumber::handleScroll(GdkEventScroll* e) {
if (dir == SCROLL_DIR::NONE) { if (dir == SCROLL_DIR::NONE) {
return true; return true;
} }
double max_volume = 1; double maxVolume = 1;
double step = 1.0 / 100.0; double step = 1.0 / 100.0;
if (config_["scroll-step"].isDouble()) { if (config_["scroll-step"].isDouble()) {
step = config_["scroll-step"].asDouble() / 100.0; step = config_["scroll-step"].asDouble() / 100.0;
} }
if (config_["max-volume"].isDouble()) { if (config_["max-volume"].isDouble()) {
max_volume = config_["max-volume"].asDouble() / 100.0; maxVolume = config_["max-volume"].asDouble() / 100.0;
} }
if (step < min_step_) step = min_step_; if (step < min_step_) step = min_step_;
double new_vol = volume_; double newVol = volume_;
if (dir == SCROLL_DIR::UP) { if (dir == SCROLL_DIR::UP) {
if (volume_ < max_volume) { if (volume_ < maxVolume) {
new_vol = volume_ + step; newVol = volume_ + step;
if (new_vol > max_volume) new_vol = max_volume; if (newVol > maxVolume) newVol = maxVolume;
} }
} else if (dir == SCROLL_DIR::DOWN) { } else if (dir == SCROLL_DIR::DOWN) {
if (volume_ > 0) { if (volume_ > 0) {
new_vol = volume_ - step; newVol = volume_ - step;
if (new_vol < 0) new_vol = 0; if (newVol < 0) newVol = 0;
} }
} }
if (new_vol != volume_) { if (newVol != volume_) {
GVariant* variant = g_variant_new_double(new_vol); GVariant* variant = g_variant_new_double(newVol);
gboolean ret; gboolean ret;
g_signal_emit_by_name(mixer_api_, "set-volume", node_id_, variant, &ret); g_signal_emit_by_name(mixer_api_, "set-volume", node_id_, variant, &ret);
} }