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/**
* Copyright © 2017-2025 Wellington Wallace
*
* This file is part of Easy Effects.
*
* Easy Effects is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Easy Effects is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Easy Effects. If not, see <https://www.gnu.org/licenses/>.
*/
#include "pw_metadata_manager.hpp"
#include <pipewire/context.h>
#include <pipewire/core.h>
#include <pipewire/extensions/metadata.h>
#include <pipewire/keys.h>
#include <pipewire/properties.h>
#include <pipewire/proxy.h>
#include <pipewire/thread-loop.h>
#include <qobject.h>
#include <qtmetamacros.h>
#include <qtypes.h>
#include <spa/utils/dict.h>
#include <spa/utils/hook.h>
#include <cstdint>
#include <cstring>
#include <format>
#include <nlohmann/json.hpp>
#include <nlohmann/json_fwd.hpp>
#include <string>
#include "tags_pipewire.hpp"
#include "util.hpp"
namespace pw {
auto MetadataManager::register_metadata(pw_registry* registry, uint32_t id, const char* type, const spa_dict* props)
-> bool {
if (const auto* name = spa_dict_lookup(props, PW_KEY_METADATA_NAME)) {
util::debug(std::format("Found metadata: {}", name));
if (std::strcmp(name, "default") == 0) {
if (metadata != nullptr) {
util::debug("A new default metadata is available. We will use it");
spa_hook_remove(&metadata_listener);
}
metadata = static_cast<pw_metadata*>(pw_registry_bind(registry, id, type, PW_VERSION_METADATA, 0));
if (metadata != nullptr) {
pw_metadata_add_listener(metadata, &metadata_listener, &metadata_events, this); // NOLINT
util::debug("Successfully registered default metadata");
return true;
} else {
util::warning("pw_registry_bind returned a null metadata object");
return false;
}
}
}
return false;
}
auto MetadataManager::on_metadata_property(void* data,
uint32_t id,
const char* key,
const char* type,
const char* value) -> int {
auto* const mm = static_cast<MetadataManager*>(data);
const std::string str_key = (key != nullptr) ? key : "";
const std::string str_value = (value != nullptr) ? value : "";
const std::string str_type = (type != nullptr) ? type : "";
util::debug(std::format("New metadata property: {}, {}, {}, {}", id, str_key, str_type, str_value));
if (str_value.empty()) {
return 0;
}
// Handle specific metadata properties
if (str_key == "default.audio.sink") {
auto v = nlohmann::json::parse(str_value).value("name", "");
if (v == tags::pipewire::ee_sink_name) {
return 0;
}
util::debug(std::format("New default output device: {}", v));
Q_EMIT mm->defaultSinkChanged(QString::fromStdString(v));
}
if (str_key == "default.audio.source") {
auto v = nlohmann::json::parse(str_value).value("name", "");
if (v == tags::pipewire::ee_source_name) {
return 0;
}
util::debug(std::format("New default input device: {}", v));
Q_EMIT mm->defaultSourceChanged(QString::fromStdString(v));
}
return 0;
}
void MetadataManager::set_property(uint32_t id, const char* key, const char* type, const char* value) const {
if (metadata == nullptr) {
return;
}
pw_metadata_set_property(metadata, id, key, type, value); // NOLINT
}
void MetadataManager::clear_property(uint32_t id, const char* key) const {
if (metadata == nullptr) {
return;
}
pw_metadata_set_property(metadata, id, key, nullptr, nullptr); // NOLINT
}
void MetadataManager::destroy_metadata() {
if (metadata != nullptr) {
util::debug("Destroying PipeWire metadata...");
pw_proxy_destroy((struct pw_proxy*)metadata);
}
}
} // namespace pw
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