Music_Player.h

// Simple game music file player

// Game_Music_Emu 0.5.2
#ifndef MUSIC_PLAYER_H
#define MUSIC_PLAYER_H

#include "gme/Music_Emu.h"

class Music_Player {
public:
	// Initialize player and set sample rate
	blargg_err_t init( long sample_rate = 44100 );
	
	// Load game music file. NULL on success, otherwise error string.
	blargg_err_t load_file( const char* path );
	
	// (Re)start playing track. Tracks are numbered from 0 to track_count() - 1.
	blargg_err_t start_track( int track );
	
	// Stop playing current file
	void stop();
	
// Optional functions

	// Number of tracks in current file, or 0 if no file loaded.
	int track_count() const;
	
	// Info for current track
	track_info_t const& track_info() const { return track_info_; }
	
	// Pause/resume playing current track.
	void pause( int );
	
	// True if track ended
	bool track_ended() const;
	
	// Pointer to emulator
	Music_Emu* emu() const { return emu_; }
	
	// Set stereo depth, where 0.0 = none and 1.0 = maximum
	void set_stereo_depth( double );
	
	// Set tempo, where 0.5 = half speed, 1.0 = normal, 2.0 = double speed
	void set_tempo( double );
	
	// Set voice muting bitmask
	void mute_voices( int );
	
	// Set buffer to copy samples from each buffer into, or NULL to disable
	typedef short sample_t;
	void set_scope_buffer( sample_t* buf, int size ) { scope_buf = buf; scope_buf_size = size; }
	
public:
	Music_Player();
	~Music_Player();
private:
	Music_Emu* emu_;
	sample_t* scope_buf;
	long sample_rate;
	int scope_buf_size;
	bool paused;
	track_info_t track_info_;
	
	void suspend();
	void resume();
	static void fill_buffer( void*, sample_t*, int );
};

#endif