229 lines
6.8 KiB
C++
229 lines
6.8 KiB
C++
#include "modules/pulseaudio.hpp"
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#include <array>
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waybar::modules::Pulseaudio::Pulseaudio(const std::string& id, const Json::Value &config)
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: ALabel(config, "{volume}%"),
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mainloop_(nullptr),
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mainloop_api_(nullptr),
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context_(nullptr),
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sink_idx_(0),
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volume_(0),
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muted_(false),
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scrolling_(false) {
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label_.set_name("pulseaudio");
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if (!id.empty()) {
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label_.get_style_context()->add_class(id);
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}
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mainloop_ = pa_threaded_mainloop_new();
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if (mainloop_ == nullptr) {
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throw std::runtime_error("pa_mainloop_new() failed.");
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}
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pa_threaded_mainloop_lock(mainloop_);
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mainloop_api_ = pa_threaded_mainloop_get_api(mainloop_);
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context_ = pa_context_new(mainloop_api_, "waybar");
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if (context_ == nullptr) {
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throw std::runtime_error("pa_context_new() failed.");
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}
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if (pa_context_connect(context_, nullptr, PA_CONTEXT_NOAUTOSPAWN,
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nullptr) < 0) {
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auto err = fmt::format("pa_context_connect() failed: {}",
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pa_strerror(pa_context_errno(context_)));
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throw std::runtime_error(err);
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}
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pa_context_set_state_callback(context_, contextStateCb, this);
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if (pa_threaded_mainloop_start(mainloop_) < 0) {
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throw std::runtime_error("pa_mainloop_run() failed.");
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}
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pa_threaded_mainloop_unlock(mainloop_);
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// define the pulse scroll events only when no user provided
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// events are configured
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if (!config["on-scroll-up"].isString() &&
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!config["on-scroll-down"].isString()) {
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event_box_.add_events(Gdk::SCROLL_MASK | Gdk::SMOOTH_SCROLL_MASK);
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event_box_.signal_scroll_event().connect(
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sigc::mem_fun(*this, &Pulseaudio::handleScroll));
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}
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}
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waybar::modules::Pulseaudio::~Pulseaudio() {
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mainloop_api_->quit(mainloop_api_, 0);
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pa_threaded_mainloop_stop(mainloop_);
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pa_threaded_mainloop_free(mainloop_);
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}
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void waybar::modules::Pulseaudio::contextStateCb(pa_context *c, void *data)
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{
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auto pa = static_cast<waybar::modules::Pulseaudio *>(data);
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switch (pa_context_get_state(c)) {
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case PA_CONTEXT_TERMINATED:
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pa->mainloop_api_->quit(pa->mainloop_api_, 0);
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break;
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case PA_CONTEXT_READY:
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pa_context_get_server_info(c, serverInfoCb, data);
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pa_context_set_subscribe_callback(c, subscribeCb, data);
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pa_context_subscribe(c, PA_SUBSCRIPTION_MASK_SINK, nullptr, nullptr);
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break;
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case PA_CONTEXT_FAILED:
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pa->mainloop_api_->quit(pa->mainloop_api_, 1);
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break;
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case PA_CONTEXT_CONNECTING:
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case PA_CONTEXT_AUTHORIZING:
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case PA_CONTEXT_SETTING_NAME:
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default:
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break;
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}
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}
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bool waybar::modules::Pulseaudio::handleScroll(GdkEventScroll *e) {
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// Avoid concurrent scroll event
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bool direction_up = false;
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uint16_t change = config_["scroll-step"].isUInt() ? config_["scroll-step"].asUInt() * 100 : 100;
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pa_cvolume pa_volume = pa_volume_;
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if (scrolling_) {
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return false;
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}
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scrolling_ = true;
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if (e->direction == GDK_SCROLL_UP) {
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direction_up = true;
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}
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if (e->direction == GDK_SCROLL_DOWN) {
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direction_up = false;
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}
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if (e->direction == GDK_SCROLL_SMOOTH) {
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gdouble delta_x, delta_y;
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gdk_event_get_scroll_deltas(reinterpret_cast<const GdkEvent *>(e), &delta_x,
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&delta_y);
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if (delta_y < 0) {
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direction_up = true;
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} else if (delta_y > 0) {
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direction_up = false;
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}
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}
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if (direction_up) {
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if (volume_ + 1 < 100) pa_cvolume_inc(&pa_volume, change);
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} else {
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if (volume_ - 1 > 0) pa_cvolume_dec(&pa_volume, change);
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}
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pa_context_set_sink_volume_by_index(context_, sink_idx_, &pa_volume,
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volumeModifyCb, this);
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return true;
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}
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/*
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* Called when an event we subscribed to occurs.
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*/
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void waybar::modules::Pulseaudio::subscribeCb(pa_context* context,
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pa_subscription_event_type_t type, uint32_t idx, void* data)
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{
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unsigned facility = type & PA_SUBSCRIPTION_EVENT_FACILITY_MASK;
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switch (facility) {
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case PA_SUBSCRIPTION_EVENT_SINK:
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pa_context_get_sink_info_by_index(context, idx, sinkInfoCb, data);
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break;
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default:
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break;
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}
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}
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/*
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* Called in response to a volume change request
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*/
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void waybar::modules::Pulseaudio::volumeModifyCb(pa_context *c, int success,
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void *data) {
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auto pa = static_cast<waybar::modules::Pulseaudio *>(data);
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if (success) {
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pa_context_get_sink_info_by_index(pa->context_, pa->sink_idx_, sinkInfoCb,
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data);
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}
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}
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/*
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* Called when the requested sink information is ready.
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*/
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void waybar::modules::Pulseaudio::sinkInfoCb(pa_context * /*context*/,
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const pa_sink_info *i, int /*eol*/,
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void *data) {
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if (i != nullptr) {
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auto pa = static_cast<waybar::modules::Pulseaudio *>(data);
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pa->pa_volume_ = i->volume;
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float volume = static_cast<float>(pa_cvolume_avg(&(pa->pa_volume_))) /
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float{PA_VOLUME_NORM};
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pa->sink_idx_ = i->index;
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pa->volume_ = std::round(volume * 100.0f);
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pa->muted_ = i->mute != 0;
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pa->desc_ = i->description;
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pa->port_name_ = i->active_port ? i->active_port->name : "Unknown";
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pa->dp.emit();
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}
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}
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/*
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* Called when the requested information on the server is ready. This is
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* used to find the default PulseAudio sink.
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*/
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void waybar::modules::Pulseaudio::serverInfoCb(pa_context *context,
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const pa_server_info *i, void *data)
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{
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pa_context_get_sink_info_by_name(context, i->default_sink_name,
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sinkInfoCb, data);
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}
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static const std::array<std::string, 9> ports = {
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"headphones",
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"speaker",
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"hdmi",
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"headset",
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"handsfree",
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"portable",
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"car",
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"hifi",
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"phone",
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};
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const std::string waybar::modules::Pulseaudio::getPortIcon() const
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{
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std::string nameLC = port_name_;
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std::transform(nameLC.begin(), nameLC.end(), nameLC.begin(), ::tolower);
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for (auto const& port : ports) {
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if (nameLC.find(port) != std::string::npos) {
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return port;
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}
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}
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return port_name_;
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}
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auto waybar::modules::Pulseaudio::update() -> void
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{
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auto format = format_;
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if (muted_) {
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format =
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config_["format-muted"].isString() ? config_["format-muted"].asString() : format;
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label_.get_style_context()->add_class("muted");
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} else {
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label_.get_style_context()->remove_class("muted");
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if (port_name_.find("a2dp_sink") != std::string::npos) {
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format = config_["format-bluetooth"].isString()
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? config_["format-bluetooth"].asString() : format;
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label_.get_style_context()->add_class("bluetooth");
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} else {
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label_.get_style_context()->remove_class("bluetooth");
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}
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}
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label_.set_markup(
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fmt::format(format, fmt::arg("volume", volume_),
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fmt::arg("icon", getIcon(volume_, getPortIcon()))));
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if (tooltipEnabled()) {
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label_.set_tooltip_text(desc_);
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}
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if (scrolling_) {
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scrolling_ = false;
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}
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}
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