77 lines
1.5 KiB
C++
77 lines
1.5 KiB
C++
#ifndef _INTERFACES_ALSA_HPP_
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#define _INTERFACES_ALSA_HPP_
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#include <functional>
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#include <string>
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#include <stdio.h>
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#include <alsa/asoundlib.h>
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#include <mutex>
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#include "exception.hpp"
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#define STRSNDERR(s) std::string(snd_strerror(s))
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namespace alsa
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{
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class Exception : public ::Exception
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{
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public:
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Exception(const std::string& msg) : ::Exception("[Alsa] "+ msg){}
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};
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class ControlInterfaceError : public Exception {
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using Exception::Exception;
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};
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class ControlInterface
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{
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std::mutex mtx;
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snd_hctl_t *hctl;
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snd_hctl_elem_t *elem;
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snd_ctl_t *ctl;
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snd_ctl_elem_info_t *info;
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snd_ctl_elem_value_t *value;
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snd_ctl_elem_id_t *id;
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public:
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ControlInterface(int numid) throw(ControlInterfaceError);
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~ControlInterface();
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bool wait(int timeout = -1) throw(ControlInterfaceError);
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bool test_device_plugged() throw(ControlInterfaceError);
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};
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class MixerError : public Exception {
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using Exception::Exception;
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};
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class Mixer
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{
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std::mutex mtx;
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snd_mixer_t *hardware_mixer = nullptr;
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snd_mixer_elem_t *mixer_element = nullptr;
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public:
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Mixer(const std::string& mixer_control_name) throw(MixerError);
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~Mixer();
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bool wait(int timeout = -1) throw(MixerError);
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int get_volume();
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void set_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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protected:
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void error_handler(const std::string& message);
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};
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}
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#endif
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