Waybar/src/modules/wireplumber.cpp

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#include "modules/wireplumber.hpp"
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waybar::modules::Wireplumber::Wireplumber(const std::string& id, const Json::Value& config)
: ALabel(config, "wireplumber", id, "{volume}%"),
wp_core_(nullptr),
apis_(nullptr),
om_(nullptr),
pending_plugins_(0),
muted_(false),
volume_(0.0),
node_id_(0) {
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wp_init(WP_INIT_ALL);
wp_core_ = wp_core_new(NULL, NULL);
apis_ = g_ptr_array_new_with_free_func(g_object_unref);
om_ = wp_object_manager_new();
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prepare();
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loadRequiredApiModules();
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if (!wp_core_connect(wp_core_)) {
throw std::runtime_error("Could not connect to PipeWire\n");
}
g_signal_connect_swapped(om_, "installed", (GCallback)onObjectManagerInstalled, this);
activatePlugins();
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dp.emit();
}
waybar::modules::Wireplumber::~Wireplumber() {
g_clear_pointer(&apis_, g_ptr_array_unref);
g_clear_object(&om_);
g_clear_object(&wp_core_);
}
uint32_t waybar::modules::Wireplumber::getDefaultNodeId(waybar::modules::Wireplumber* self) {
uint32_t id;
g_autoptr(WpPlugin) def_nodes_api = wp_plugin_find(self->wp_core_, "default-nodes-api");
if (!def_nodes_api) {
throw std::runtime_error("Default nodes API is not loaded\n");
}
g_signal_emit_by_name(def_nodes_api, "get-default-node", "Audio/Sink", &id);
if (id <= 0 || id >= G_MAXUINT32) {
auto err = fmt::format("'{}' is not a valid ID (returned by default-nodes-api)\n", id);
throw std::runtime_error(err);
}
return id;
}
void waybar::modules::Wireplumber::updateNodeName(waybar::modules::Wireplumber* self) {
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auto proxy = static_cast<WpPipewireObject*>(wp_object_manager_lookup(
self->om_, WP_TYPE_GLOBAL_PROXY, WP_CONSTRAINT_TYPE_PW_GLOBAL_PROPERTY, "object.id", "=u",
self->node_id_, NULL));
if (!proxy) {
throw std::runtime_error(fmt::format("Object '{}' not found\n", self->node_id_));
}
g_autoptr(WpProperties) properties = wp_pipewire_object_get_properties(proxy);
properties = wp_properties_ensure_unique_owner(properties);
self->node_name_ = wp_properties_get(properties, "node.nick");
}
void waybar::modules::Wireplumber::updateVolume(waybar::modules::Wireplumber* self) {
double vol;
GVariant* variant = NULL;
g_autoptr(WpPlugin) mixer_api = wp_plugin_find(self->wp_core_, "mixer-api");
g_signal_emit_by_name(mixer_api, "get-volume", self->node_id_, &variant);
if (!variant) {
auto err = fmt::format("Node {} does not support volume\n", self->node_id_);
throw std::runtime_error(err);
}
g_variant_lookup(variant, "volume", "d", &vol);
g_variant_lookup(variant, "mute", "b", &self->muted_);
g_clear_pointer(&variant, g_variant_unref);
self->volume_ = std::round(vol * 100.0F);
self->dp.emit();
}
void waybar::modules::Wireplumber::onObjectManagerInstalled(waybar::modules::Wireplumber* self) {
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self->node_id_ =
self->config_["node-id"].isInt() ? self->config_["node-id"].asInt() : getDefaultNodeId(self);
g_autoptr(WpPlugin) mixer_api = wp_plugin_find(self->wp_core_, "mixer-api");
updateVolume(self);
updateNodeName(self);
g_signal_connect_swapped(mixer_api, "changed", (GCallback)updateVolume, self);
}
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void waybar::modules::Wireplumber::onPluginActivated(WpObject* p, GAsyncResult* res,
waybar::modules::Wireplumber* self) {
g_autoptr(GError) error = NULL;
if (!wp_object_activate_finish(p, res, &error)) {
throw std::runtime_error(error->message);
}
if (--self->pending_plugins_ == 0) {
wp_core_install_object_manager(self->wp_core_, self->om_);
}
}
void waybar::modules::Wireplumber::activatePlugins() {
for (uint16_t i = 0; i < apis_->len; i++) {
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WpPlugin* plugin = static_cast<WpPlugin*>(g_ptr_array_index(apis_, i));
pending_plugins_++;
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wp_object_activate(WP_OBJECT(plugin), WP_PLUGIN_FEATURE_ENABLED, NULL,
(GAsyncReadyCallback)onPluginActivated, this);
}
}
void waybar::modules::Wireplumber::prepare() {
wp_object_manager_add_interest(om_, WP_TYPE_NODE, NULL);
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wp_object_manager_request_object_features(om_, WP_TYPE_GLOBAL_PROXY,
WP_PIPEWIRE_OBJECT_FEATURES_MINIMAL);
}
void waybar::modules::Wireplumber::loadRequiredApiModules() {
g_autoptr(GError) error = NULL;
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if (!wp_core_load_component(wp_core_, "libwireplumber-module-default-nodes-api", "module", NULL,
&error)) {
throw std::runtime_error(error->message);
}
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if (!wp_core_load_component(wp_core_, "libwireplumber-module-mixer-api", "module", NULL,
&error)) {
throw std::runtime_error(error->message);
}
g_ptr_array_add(apis_, wp_plugin_find(wp_core_, "default-nodes-api"));
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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;
}));
}
auto waybar::modules::Wireplumber::update() -> void {
auto format = format_;
std::string tooltip_format;
if (muted_) {
format = config_["format-muted"].isString() ? config_["format-muted"].asString() : format;
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label_.get_style_context()->add_class("muted");
} else {
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label_.get_style_context()->remove_class("muted");
}
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std::string markup =
fmt::format(format, fmt::arg("node_name", node_name_), fmt::arg("volume", volume_));
label_.set_markup(markup);
getState(volume_);
if (tooltipEnabled()) {
if (tooltip_format.empty() && config_["tooltip-format"].isString()) {
tooltip_format = config_["tooltip-format"].asString();
}
if (!tooltip_format.empty()) {
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label_.set_tooltip_text(fmt::format(tooltip_format, fmt::arg("node_name", node_name_),
fmt::arg("volume", volume_)));
} else {
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label_.set_tooltip_text(node_name_);
}
}
// Call parent update
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ALabel::update();
}