Music.h

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#ifndef HRK_MUSIC_H
#define HRK_MUSIC_H

#include <string>


namespace hrk
{
    class Music
    {
    public:
        enum {
            Infinity_loop = -1, 
            Invalid_id = -1,    
        };
        Music();
        ~Music();

        const char* what() const;

        void terminate();

        bool register_alias(const std::string& alias,
                            const std::string& file_name);

        void unregister_alias(const std::string& alias);

        void set_volume_percent(double percent);

        double volume_percent() const;

        void play(const std::string& alias,
                  double fade_in_sec = 0.0,
                  double fade_out_sec_previous_music = 0.0,
                  int loop_times = Infinity_loop);

        void set_next_play_music(const std::string& alias,
                                 double fade_in_sec = 0.0,
                                 int loop_times = Infinity_loop);

        bool is_playing();

        void pause();

        void resume();

        void stop(double fade_out_sec = 0.0);

    private:
        Music(const Music& rhs);
        Music& operator = (const Music& rhs);

        struct pImpl;
        pImpl* pimpl;
    };
}

#endif