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718112a8fe
Currently none of these is being used, but eventually they will, once more code gets ported over. So it's better to have them right away and avoid editing the project file too much, only to revert that later.
95 lines
2.2 KiB
C++
95 lines
2.2 KiB
C++
// MSX computer KSS music file emulator
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// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
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#ifndef KSS_EMU_H
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#define KSS_EMU_H
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#include "Classic_Emu.h"
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#include "Kss_Scc_Apu.h"
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#include "Kss_Cpu.h"
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#include "Sms_Apu.h"
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#include "Ay_Apu.h"
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class Kss_Emu : private Kss_Cpu, public Classic_Emu {
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typedef Kss_Cpu cpu;
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public:
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// KSS file header
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enum { header_size = 0x10 };
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struct header_t
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{
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byte tag [4];
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byte load_addr [2];
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byte load_size [2];
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byte init_addr [2];
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byte play_addr [2];
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byte first_bank;
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byte bank_mode;
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byte extra_header;
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byte device_flags;
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};
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enum { ext_header_size = 0x10 };
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struct ext_header_t
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{
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byte data_size [4];
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byte unused [4];
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byte first_track [2];
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byte last_tack [2];
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byte psg_vol;
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byte scc_vol;
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byte msx_music_vol;
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byte msx_audio_vol;
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};
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struct composite_header_t : header_t, ext_header_t { };
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// Header for currently loaded file
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composite_header_t const& header() const { return header_; }
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static gme_type_t static_type() { return gme_kss_type; }
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public:
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Kss_Emu();
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~Kss_Emu();
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protected:
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blargg_err_t track_info_( track_info_t*, int track ) const;
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blargg_err_t load_( Data_Reader& );
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blargg_err_t start_track_( int );
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blargg_err_t run_clocks( blip_time_t&, int );
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void set_tempo_( double );
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void set_voice( int, Blip_Buffer*, Blip_Buffer*, Blip_Buffer* );
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void update_eq( blip_eq_t const& );
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void unload();
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private:
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Rom_Data<page_size> rom;
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composite_header_t header_;
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bool scc_accessed;
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bool gain_updated;
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void update_gain();
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unsigned scc_enabled; // 0 or 0xC000
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int bank_count;
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void set_bank( int logical, int physical );
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blargg_long bank_size() const { return (16 * 1024L) >> (header_.bank_mode >> 7 & 1); }
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blip_time_t play_period;
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blip_time_t next_play;
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int ay_latch;
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friend void kss_cpu_out( class Kss_Cpu*, cpu_time_t, unsigned addr, int data );
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friend int kss_cpu_in( class Kss_Cpu*, cpu_time_t, unsigned addr );
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void cpu_write( unsigned addr, int data );
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friend void kss_cpu_write( class Kss_Cpu*, unsigned addr, int data );
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// large items
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enum { mem_size = 0x10000 };
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byte ram [mem_size + cpu_padding];
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Ay_Apu ay;
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Scc_Apu scc;
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Sms_Apu* sn;
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byte unmapped_read [0x100];
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byte unmapped_write [page_size];
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};
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#endif
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