Merge pull request #1653 from kennypm/dsp

add JACK module

include/factory.hpp

@@ -67,6 +67,9 @@
 #include "modules/bluetooth.hpp"
 #include "modules/inhibitor.hpp"
 #endif
+#ifdef HAVE_LIBJACK
+#include "modules/jack.hpp"
+#endif
 #include "bar.hpp"
 #include "modules/custom.hpp"
 #include "modules/temperature.hpp"

include/modules/jack.hpp

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <fmt/format.h>
+#include <fstream>
+#include <jack/jack.h>
+#include <jack/thread.h>
+#include "ALabel.hpp"
+#include "util/sleeper_thread.hpp"
+
+namespace waybar::modules {
+
+class JACK : public ALabel {
+ public:
+  JACK(const std::string&, const Json::Value&);
+  ~JACK() = default;
+  auto update() -> void;
+
+  int                 bufSize(jack_nframes_t size);
+  int                 sampleRate(jack_nframes_t rate);
+  int                 xrun();
+  void                shutdown();
+
+ private:
+  std::string         JACKState();
+
+  jack_client_t*      client_;
+  jack_nframes_t      bufsize_;
+  jack_nframes_t      samplerate_;
+  unsigned int        xruns_;
+  float               load_;
+  bool                running_;
+  std::mutex          mutex_;
+  std::string         state_;
+  util::SleeperThread thread_;
+};
+
+}  // namespace waybar::modules
+
+int bufSizeCallback(jack_nframes_t size, void *obj);
+int sampleRateCallback(jack_nframes_t rate, void *obj);
+int xrunCallback(void *obj);
+void shutdownCallback(void *obj);