mirror of
https://github.com/ZDoom/qzdoom-gpl.git
synced 2024-11-16 01:02:03 +00:00
106 lines
2.4 KiB
C++
106 lines
2.4 KiB
C++
// Nintendo NES/Famicom NSF music file emulator
|
|
|
|
// Game_Music_Emu 0.6.0
|
|
#ifndef NSF_EMU_H
|
|
#define NSF_EMU_H
|
|
|
|
#include "Classic_Emu.h"
|
|
#include "Nes_Apu.h"
|
|
#include "Nes_Cpu.h"
|
|
|
|
class Nsf_Emu : private Nes_Cpu, public Classic_Emu {
|
|
typedef Nes_Cpu cpu;
|
|
public:
|
|
// Equalizer profiles for US NES and Japanese Famicom
|
|
static equalizer_t const nes_eq;
|
|
static equalizer_t const famicom_eq;
|
|
|
|
// NSF file header
|
|
enum { header_size = 0x80 };
|
|
struct header_t
|
|
{
|
|
char tag [5];
|
|
byte vers;
|
|
byte track_count;
|
|
byte first_track;
|
|
byte load_addr [2];
|
|
byte init_addr [2];
|
|
byte play_addr [2];
|
|
char game [32];
|
|
char author [32];
|
|
char copyright [32];
|
|
byte ntsc_speed [2];
|
|
byte banks [8];
|
|
byte pal_speed [2];
|
|
byte speed_flags;
|
|
byte chip_flags;
|
|
byte unused [4];
|
|
};
|
|
|
|
// Header for currently loaded file
|
|
header_t const& header() const { return header_; }
|
|
|
|
static gme_type_t static_type() { return gme_nsf_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:
|
|
Nsf_Emu();
|
|
~Nsf_Emu();
|
|
Nes_Apu* apu_() { return &apu; }
|
|
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();
|
|
protected:
|
|
enum { bank_count = 8 };
|
|
byte initial_banks [bank_count];
|
|
nes_addr_t init_addr;
|
|
nes_addr_t play_addr;
|
|
double clock_rate_;
|
|
bool pal_only;
|
|
|
|
// timing
|
|
Nes_Cpu::registers_t saved_state;
|
|
nes_time_t next_play;
|
|
nes_time_t play_period;
|
|
int play_extra;
|
|
int play_ready;
|
|
|
|
enum { rom_begin = 0x8000 };
|
|
enum { bank_select_addr = 0x5FF8 };
|
|
enum { bank_size = 0x1000 };
|
|
Rom_Data<bank_size> rom;
|
|
|
|
public: private: friend class Nes_Cpu;
|
|
void cpu_jsr( nes_addr_t );
|
|
int cpu_read( nes_addr_t );
|
|
void cpu_write( nes_addr_t, int );
|
|
void cpu_write_misc( nes_addr_t, int );
|
|
enum { badop_addr = bank_select_addr };
|
|
|
|
private:
|
|
class Nes_Namco_Apu* namco;
|
|
class Nes_Vrc6_Apu* vrc6;
|
|
class Nes_Fme7_Apu* fme7;
|
|
Nes_Apu apu;
|
|
static int pcm_read( void*, nes_addr_t );
|
|
blargg_err_t init_sound();
|
|
|
|
header_t header_;
|
|
|
|
enum { sram_addr = 0x6000 };
|
|
byte sram [0x2000];
|
|
byte unmapped_code [Nes_Cpu::page_size + 8];
|
|
};
|
|
|
|
#endif
|