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// Sinclair Spectrum AY music file emulator
// Game_Music_Emu 0.5.2
#ifndef AY_EMU_H
#define AY_EMU_H
#include "Classic_Emu.h"
#include "Ay_Apu.h"
#include "Ay_Cpu.h"
class Ay_Emu : private Ay_Cpu, public Classic_Emu {
typedef Ay_Cpu cpu;
public:
// AY file header
enum { header_size = 0x14 };
struct header_t
{
byte tag [8];
byte vers;
byte player;
byte unused [2];
byte author [2];
byte comment [2];
byte max_track;
byte first_track;
byte track_info [2];
};
static gme_type_t static_type() { return gme_ay_type; }
public:
Ay_Emu();
~Ay_Emu();
struct file_t {
header_t const* header;
byte const* end;
byte const* tracks;
};
protected:
blargg_err_t track_info_( track_info_t*, int track ) const;
blargg_err_t load_mem_( byte const*, long );
blargg_err_t start_track_( int );
blargg_err_t run_clocks( blip_time_t&, int );
void set_tempo_( double );
void set_voice( int, Blip_Buffer*, Blip_Buffer*, Blip_Buffer* );
void update_eq( blip_eq_t const& );
private:
file_t file;
unsigned play_addr;
cpu_time_t play_period;
cpu_time_t next_play;
Blip_Buffer* beeper_output;
int beeper_delta;
int last_beeper;
int apu_addr;
int cpc_latch;
bool spectrum_mode;
bool cpc_mode;
// large items
struct {
byte padding1 [0x100];
byte ram [0x10000 + 0x100];
} mem;
Ay_Apu apu;
friend void ay_cpu_out( Ay_Cpu*, cpu_time_t, unsigned addr, int data );
void cpu_out_misc( cpu_time_t, unsigned addr, int data );
};
#endif
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