63 lines
1.6 KiB
C
63 lines
1.6 KiB
C
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#ifndef OPL_APU_H
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#define OPL_APU_H
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#include "blargg_common.h"
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#include "blargg_source.h"
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#include "blip_buffer.h"
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#include "emu8950.h"
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#include "emu2413.h"
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enum opl_type_t { type_opll = 0x10, type_msxmusic = 0x11, type_smsfmunit = 0x12,
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type_vrc7 = 0x13, type_msxaudio = 0x21 };
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enum { opl_osc_count = 1 };
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struct Opl_Apu {
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struct Blip_Buffer* output_;
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enum opl_type_t type_;
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blip_time_t next_time;
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int last_amp;
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int addr;
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long clock_;
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long rate_;
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blip_time_t period_;
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struct Blip_Synth synth;
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// OPL chips
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struct Y8950 opl;
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OPLL opll;
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unsigned char regs[ 0x100 ];
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unsigned char opl_memory[ 32768 ];
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};
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blargg_err_t Opl_init( struct Opl_Apu* this, long clock, long rate, blip_time_t period, enum opl_type_t type );
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void Opl_reset( struct Opl_Apu* this );
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static inline void Opl_volume( struct Opl_Apu* this, double v ) { Synth_volume( &this->synth, 1.0 / (4096 * 6) * v ); }
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static inline void Opl_osc_output( struct Opl_Apu* this, int i, struct Blip_Buffer* buf )
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{
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#if defined(ROCKBOX)
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(void) i;
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#endif
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assert( (unsigned) i < opl_osc_count );
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this->output_ = buf;
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}
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static inline void Opl_set_output( struct Opl_Apu* this, struct Blip_Buffer* buf ) { Opl_osc_output( this, 0, buf ); }
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void Opl_end_frame( struct Opl_Apu* this, blip_time_t ) ICODE_ATTR;
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static inline void Opl_write_addr( struct Opl_Apu* this, int data ) { this->addr = data; }
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void Opl_write_data( struct Opl_Apu* this, blip_time_t, int data ) ICODE_ATTR;
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int Opl_read( struct Opl_Apu* this, blip_time_t, int port ) ICODE_ATTR;
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static inline bool Opl_supported( void ) { return true; }
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#endif
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