diff options
Diffstat (limited to 'plugins/gme/game-music-emu-0.6.0/gme/Kss_Emu.h')
-rw-r--r-- | plugins/gme/game-music-emu-0.6.0/gme/Kss_Emu.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/plugins/gme/game-music-emu-0.6.0/gme/Kss_Emu.h b/plugins/gme/game-music-emu-0.6.0/gme/Kss_Emu.h new file mode 100644 index 00000000..1d6ae475 --- /dev/null +++ b/plugins/gme/game-music-emu-0.6.0/gme/Kss_Emu.h @@ -0,0 +1,96 @@ +// MSX computer KSS music file emulator + +// Game_Music_Emu 0.5.5 +#ifndef KSS_EMU_H +#define KSS_EMU_H + +#include "Classic_Emu.h" +#include "Kss_Scc_Apu.h" +#include "Kss_Cpu.h" +#include "Sms_Apu.h" +#include "Ay_Apu.h" + +class Kss_Emu : private Kss_Cpu, public Classic_Emu { + typedef Kss_Cpu cpu; +public: + // KSS file header + enum { header_size = 0x10 }; + struct header_t + { + byte tag [4]; + byte load_addr [2]; + byte load_size [2]; + byte init_addr [2]; + byte play_addr [2]; + byte first_bank; + byte bank_mode; + byte extra_header; + byte device_flags; + }; + + enum { ext_header_size = 0x10 }; + struct ext_header_t + { + byte data_size [4]; + byte unused [4]; + byte first_track [2]; + byte last_tack [2]; + byte psg_vol; + byte scc_vol; + byte msx_music_vol; + byte msx_audio_vol; + }; + + struct composite_header_t : header_t, ext_header_t { }; + + // Header for currently loaded file + composite_header_t const& header() const { return header_; } + + static gme_type_t static_type() { return gme_kss_type; } +public: + Kss_Emu(); + ~Kss_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_Data<page_size> rom; + composite_header_t header_; + + bool scc_accessed; + bool gain_updated; + void update_gain(); + + unsigned scc_enabled; // 0 or 0xC000 + byte const* bank_data; + int bank_count; + void set_bank( int logical, int physical ); + blargg_long bank_size() const { return (16 * 1024L) >> (header_.bank_mode >> 7 & 1); } + + blip_time_t play_period; + blip_time_t next_play; + int ay_latch; + + friend void kss_cpu_out( class Kss_Cpu*, cpu_time_t, unsigned addr, int data ); + friend int kss_cpu_in( class Kss_Cpu*, cpu_time_t, unsigned addr ); + void cpu_write( unsigned addr, int data ); + friend void kss_cpu_write( class Kss_Cpu*, unsigned addr, int data ); + + // large items + enum { mem_size = 0x10000 }; + byte ram [mem_size + cpu_padding]; + + Ay_Apu ay; + Scc_Apu scc; + Sms_Apu* sn; + byte unmapped_read [0x100]; + byte unmapped_write [page_size]; +}; + +#endif |