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https://github.com/polybar/polybar.git
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121 lines
2.4 KiB
C++
121 lines
2.4 KiB
C++
#pragma once
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#include <assert.h>
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#include <endian.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <poll.h>
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#include <sys/types.h>
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#include <unistd.h>
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#ifndef __GNUC__
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#define __inline__ inline
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#endif
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#include <alsa/asoundef.h>
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#include <alsa/version.h>
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#include <alsa/global.h>
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#include <alsa/input.h>
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#include <alsa/output.h>
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#include <alsa/error.h>
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#include <alsa/conf.h>
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#include <alsa/pcm.h>
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#include <alsa/rawmidi.h>
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#include <alsa/timer.h>
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#include <alsa/hwdep.h>
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#include <alsa/control.h>
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#include <alsa/mixer.h>
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#include <alsa/seq_event.h>
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#include <alsa/seq.h>
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#include <alsa/seqmid.h>
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#include <alsa/seq_midi_event.h>
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#include <cmath>
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#include <functional>
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#include <string>
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#include "common.hpp"
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#include "config.hpp"
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#include "errors.hpp"
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#include "utils/concurrency.hpp"
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#define MAX_LINEAR_DB_SCALE 24
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POLYBAR_NS
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DEFINE_ERROR(alsa_exception);
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DEFINE_CHILD_ERROR(alsa_ctl_interface_error, alsa_exception);
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DEFINE_CHILD_ERROR(alsa_mixer_error, alsa_exception);
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// class definition : alsa_ctl_interface {{{
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template <typename T>
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void throw_exception(string&& message, int error_code) {
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const char* snd_error = snd_strerror(error_code);
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if (snd_error != nullptr)
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message += ": " + string{snd_error};
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throw T(message.c_str());
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}
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class alsa_ctl_interface {
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public:
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explicit alsa_ctl_interface(int numid);
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~alsa_ctl_interface();
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int get_numid();
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bool wait(int timeout = -1);
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bool test_device_plugged();
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void process_events();
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private:
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std::mutex m_lock;
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int m_numid{0};
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snd_hctl_t* m_hctl{nullptr};
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snd_hctl_elem_t* m_elem{nullptr};
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snd_ctl_t* m_ctl{nullptr};
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snd_ctl_elem_info_t* m_info{nullptr};
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snd_ctl_elem_value_t* m_value{nullptr};
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snd_ctl_elem_id_t* m_id{nullptr};
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};
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// }}}
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// class definition : alsa_mixer {{{
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class alsa_mixer {
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public:
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explicit alsa_mixer(string mixer_control_name);
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~alsa_mixer();
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string get_name();
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bool wait(int timeout = -1);
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int process_events();
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int get_volume();
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int get_normalized_volume();
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void set_volume(float percentage);
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void set_normalized_volume(float percentage);
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void set_mute(bool mode);
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void toggle_mute();
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bool is_muted();
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private:
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std::mutex m_lock;
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string m_name;
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snd_mixer_selem_id_t* m_mixerid{nullptr};
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snd_mixer_t* m_hardwaremixer{nullptr};
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snd_mixer_elem_t* m_mixerelement{nullptr};
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};
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// }}}
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POLYBAR_NS_END
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