waybar/src/modules/jack.cpp
Aleksei Bavshin ea17a66dfc
fix: compilation errors with cpp_std=c++20
There were two main issues with fmtlib and C++20 mode:

 - `fmt::format` defaults to compile-time argument checking and requires
   using `fmt::runtime(format_string)` to bypass that.
 - `std::format` implementation introduces conflicting declarations and
   we have to specify the namespace for all `format`/`format_to` calls.
2023-01-20 22:50:02 -08:00

127 lines
3.6 KiB
C++

#include "modules/jack.hpp"
namespace waybar::modules {
JACK::JACK(const std::string &id, const Json::Value &config)
: ALabel(config, "jack", id, "{load}%", 1) {
running_ = false;
client_ = NULL;
thread_ = [this] {
dp.emit();
thread_.sleep_for(interval_);
};
}
std::string JACK::JACKState() {
std::lock_guard<std::mutex> lock(mutex_);
if (running_) {
load_ = jack_cpu_load(client_);
return state_;
}
xruns_ = 0;
load_ = 0;
bufsize_ = 0;
samplerate_ = 0;
if (client_) {
jack_client_close(client_);
client_ = NULL;
}
client_ = jack_client_open("waybar", JackNoStartServer, NULL);
if (!client_) return "disconnected";
if (config_["realtime"].isBool() && !config_["realtime"].asBool()) {
pthread_t jack_thread = jack_client_thread_id(client_);
jack_drop_real_time_scheduling(jack_thread);
}
bufsize_ = jack_get_buffer_size(client_);
samplerate_ = jack_get_sample_rate(client_);
jack_set_sample_rate_callback(client_, sampleRateCallback, this);
jack_set_buffer_size_callback(client_, bufSizeCallback, this);
jack_set_xrun_callback(client_, xrunCallback, this);
jack_on_shutdown(client_, shutdownCallback, this);
if (jack_activate(client_)) return "disconnected";
running_ = true;
return "connected";
}
auto JACK::update() -> void {
std::string format;
std::string state = JACKState();
float latency = 1000 * (float)bufsize_ / (float)samplerate_;
if (label_.get_style_context()->has_class("xrun")) {
label_.get_style_context()->remove_class("xrun");
state = "connected";
}
if (label_.get_style_context()->has_class(state_))
label_.get_style_context()->remove_class(state_);
label_.get_style_context()->add_class(state);
state_ = state;
if (config_["format-" + state].isString()) {
format = config_["format-" + state].asString();
} else if (config_["format"].isString()) {
format = config_["format"].asString();
} else
format = "{load}%";
label_.set_markup(fmt::format(fmt::runtime(format), fmt::arg("load", std::round(load_)),
fmt::arg("bufsize", bufsize_), fmt::arg("samplerate", samplerate_),
fmt::arg("latency", fmt::format("{:.2f}", latency)),
fmt::arg("xruns", xruns_)));
if (tooltipEnabled()) {
std::string tooltip_format = "{bufsize}/{samplerate} {latency}ms";
if (config_["tooltip-format"].isString()) tooltip_format = config_["tooltip-format"].asString();
label_.set_tooltip_text(fmt::format(
fmt::runtime(tooltip_format), fmt::arg("load", std::round(load_)),
fmt::arg("bufsize", bufsize_), fmt::arg("samplerate", samplerate_),
fmt::arg("latency", fmt::format("{:.2f}", latency)), fmt::arg("xruns", xruns_)));
}
// Call parent update
ALabel::update();
}
int JACK::bufSize(jack_nframes_t size) {
bufsize_ = size;
return 0;
}
int JACK::sampleRate(jack_nframes_t rate) {
samplerate_ = rate;
return 0;
}
int JACK::xrun() {
xruns_ += 1;
state_ = "xrun";
return 0;
}
void JACK::shutdown() {
std::lock_guard<std::mutex> lock(mutex_);
running_ = false;
}
} // namespace waybar::modules
int bufSizeCallback(jack_nframes_t size, void *obj) {
return static_cast<waybar::modules::JACK *>(obj)->bufSize(size);
}
int sampleRateCallback(jack_nframes_t rate, void *obj) {
return static_cast<waybar::modules::JACK *>(obj)->sampleRate(rate);
}
int xrunCallback(void *obj) { return static_cast<waybar::modules::JACK *>(obj)->xrun(); }
void shutdownCallback(void *obj) { return static_cast<waybar::modules::JACK *>(obj)->shutdown(); }