mirror of
https://github.com/ZDoom/qzdoom.git
synced 2024-12-11 05:01:09 +00:00
88 lines
2 KiB
C++
88 lines
2 KiB
C++
// Nintendo Game Boy GBS music file emulator
|
|
|
|
// Game_Music_Emu 0.5.2
|
|
#ifndef GBS_EMU_H
|
|
#define GBS_EMU_H
|
|
|
|
#include "Classic_Emu.h"
|
|
#include "Gb_Apu.h"
|
|
#include "Gb_Cpu.h"
|
|
|
|
class Gbs_Emu : private Gb_Cpu, public Classic_Emu {
|
|
typedef Gb_Cpu cpu;
|
|
public:
|
|
// Equalizer profiles for Game Boy Color speaker and headphones
|
|
static equalizer_t const handheld_eq;
|
|
static equalizer_t const headphones_eq;
|
|
|
|
// GBS file header
|
|
enum { header_size = 112 };
|
|
struct header_t
|
|
{
|
|
char tag [3];
|
|
byte vers;
|
|
byte track_count;
|
|
byte first_track;
|
|
byte load_addr [2];
|
|
byte init_addr [2];
|
|
byte play_addr [2];
|
|
byte stack_ptr [2];
|
|
byte timer_modulo;
|
|
byte timer_mode;
|
|
char game [32];
|
|
char author [32];
|
|
char copyright [32];
|
|
};
|
|
|
|
// Header for currently loaded file
|
|
header_t const& header() const { return header_; }
|
|
|
|
static gme_type_t static_type() { return gme_gbs_type; }
|
|
|
|
public:
|
|
// deprecated
|
|
using Music_Emu::load;
|
|
blargg_err_t load( header_t const& h, Data_Reader& in ) // use Remaining_Reader
|
|
{ return load_remaining_( &h, sizeof h, in ); }
|
|
|
|
public:
|
|
Gbs_Emu();
|
|
~Gbs_Emu();
|
|
protected:
|
|
blargg_err_t track_info_( track_info_t*, int track ) const;
|
|
blargg_err_t load_( Data_Reader& );
|
|
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& );
|
|
void unload();
|
|
private:
|
|
// rom
|
|
enum { bank_size = 0x4000 };
|
|
Rom_Data<bank_size> rom;
|
|
void set_bank( int );
|
|
|
|
// timer
|
|
blip_time_t cpu_time;
|
|
blip_time_t play_period;
|
|
blip_time_t next_play;
|
|
void update_timer();
|
|
|
|
header_t header_;
|
|
void cpu_jsr( gb_addr_t );
|
|
|
|
public: private: friend class Gb_Cpu;
|
|
blip_time_t clock() const { return cpu_time - cpu::remain(); }
|
|
|
|
enum { joypad_addr = 0xFF00 };
|
|
enum { ram_addr = 0xA000 };
|
|
enum { hi_page = 0xFF00 - ram_addr };
|
|
byte ram [0x4000 + 0x2000 + Gb_Cpu::cpu_padding];
|
|
Gb_Apu apu;
|
|
|
|
int cpu_read( gb_addr_t );
|
|
void cpu_write( gb_addr_t, int );
|
|
};
|
|
|
|
#endif
|