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https://github.com/ZDoom/gzdoom-gles.git
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71 lines
1.4 KiB
C
71 lines
1.4 KiB
C
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// Sinclair Spectrum AY music file emulator
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// Game_Music_Emu 0.5.2
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#ifndef AY_EMU_H
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#define AY_EMU_H
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#include "Classic_Emu.h"
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#include "Ay_Apu.h"
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#include "Ay_Cpu.h"
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class Ay_Emu : private Ay_Cpu, public Classic_Emu {
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typedef Ay_Cpu cpu;
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public:
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// AY file header
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enum { header_size = 0x14 };
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struct header_t
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{
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byte tag [8];
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byte vers;
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byte player;
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byte unused [2];
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byte author [2];
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byte comment [2];
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byte max_track;
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byte first_track;
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byte track_info [2];
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};
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static gme_type_t static_type() { return gme_ay_type; }
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public:
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Ay_Emu();
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~Ay_Emu();
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struct file_t {
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header_t const* header;
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byte const* end;
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byte const* tracks;
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};
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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_mem_( byte const*, long );
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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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private:
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file_t file;
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unsigned play_addr;
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cpu_time_t play_period;
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cpu_time_t next_play;
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Blip_Buffer* beeper_output;
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int beeper_delta;
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int last_beeper;
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int apu_addr;
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int cpc_latch;
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bool spectrum_mode;
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bool cpc_mode;
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// large items
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struct {
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byte padding1 [0x100];
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byte ram [0x10000 + 0x100];
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} mem;
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Ay_Apu apu;
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friend void ay_cpu_out( Ay_Cpu*, cpu_time_t, unsigned addr, int data );
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void cpu_out_misc( cpu_time_t, unsigned addr, int data );
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};
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#endif
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