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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.
94 lines
1.9 KiB
C++
94 lines
1.9 KiB
C++
// TurboGrafx-16/PC Engine HES music file emulator
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// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
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#ifndef HES_EMU_H
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#define HES_EMU_H
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#include "Classic_Emu.h"
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#include "Hes_Apu.h"
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#include "Hes_Cpu.h"
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class Hes_Emu : private Hes_Cpu, public Classic_Emu {
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typedef Hes_Cpu cpu;
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public:
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// HES file header
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enum { header_size = 0x20 };
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struct header_t
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{
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byte tag [4];
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byte vers;
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byte first_track;
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byte init_addr [2];
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byte banks [8];
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byte data_tag [4];
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byte size [4];
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byte addr [4];
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byte unused [4];
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};
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// Header for currently loaded file
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header_t const& header() const { return header_; }
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static gme_type_t static_type() { return gme_hes_type; }
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public:
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Hes_Emu();
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~Hes_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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public: private: friend class Hes_Cpu;
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byte* write_pages [page_count + 1]; // 0 if unmapped or I/O space
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int cpu_read_( hes_addr_t );
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int cpu_read( hes_addr_t );
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void cpu_write_( hes_addr_t, int data );
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void cpu_write( hes_addr_t, int );
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void cpu_write_vdp( int addr, int data );
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byte const* cpu_set_mmr( int page, int bank );
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int cpu_done();
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private:
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Rom_Data<page_size> rom;
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header_t header_;
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hes_time_t play_period;
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hes_time_t last_frame_hook;
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int timer_base;
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struct {
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hes_time_t last_time;
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blargg_long count;
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blargg_long load;
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int raw_load;
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byte enabled;
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byte fired;
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} timer;
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struct {
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hes_time_t next_vbl;
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byte latch;
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byte control;
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} vdp;
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struct {
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hes_time_t timer;
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hes_time_t vdp;
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byte disables;
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} irq;
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void recalc_timer_load();
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// large items
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Hes_Apu apu;
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byte sgx [3 * page_size + cpu_padding];
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void irq_changed();
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void run_until( hes_time_t );
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};
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#endif
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