audio_mixer.hpp

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#pragma once
#include "le2d/resource/audio_buffer.hpp"
#include <capo/source.hpp>
#include <klib/base_types.hpp>
#include <gsl/pointers>
 
namespace le {
class IAudioMixer : public klib::Polymorphic {
  public:
    [[nodiscard]] virtual auto get_sfx_gain() const -> float = 0;
    virtual void set_sfx_gain(float gain) = 0;
    virtual void play_sfx(gsl::not_null<IAudioBuffer const*> buffer) = 0;
    virtual void stop_sfx() = 0;
 
    [[nodiscard]] virtual auto get_music_gain() const -> float = 0;
    virtual void set_music_gain(float gain) = 0;
    virtual void loop_music(gsl::not_null<IAudioBuffer const*> buffer, kvf::Seconds fade = 1s) = 0;
    virtual void pause_music() = 0;
    virtual void resume_music() = 0;
    virtual void stop_music() = 0;
 
    [[nodiscard]] virtual auto create_source() const -> std::unique_ptr<capo::ISource> = 0;
 
    [[nodiscard]] virtual auto is_playing() const -> bool = 0;
    virtual void wait_idle() = 0;
    virtual void stop_all() = 0;
};
} // namespace le