50 lines
1.1 KiB
C
50 lines
1.1 KiB
C
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// YM2608 FM sound chip emulator interface
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// Game_Music_Emu $vers
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#ifndef YM2608_EMU_H
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#define YM2608_EMU_H
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#include "Ay_Apu.h"
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class Ym2608_Emu {
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void* opn;
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Ay_Apu psg;
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Blip_Buffer buffer;
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unsigned sample_rate;
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unsigned psg_clock;
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public:
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Ym2608_Emu();
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~Ym2608_Emu();
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// Sets output chip clock rate, in Hz. Returns non-zero
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// if error.
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int set_rate( int sample_rate, int clock_rate );
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// Resets to power-up state
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void reset();
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// Mutes voice n if bit n (1 << n) of mask is set
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enum { channel_count = 9 };
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void mute_voices( int mask );
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// Writes data to addr
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void write0( int addr, int data );
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void write1( int addr, int data );
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// Sets ROM type, scales ROM size, then writes length bytes from data at start offset
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void write_rom( int rom_id, int size, int start, int length, void * data );
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// Runs and writes pair_count*2 samples to output
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typedef short sample_t;
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enum { out_chan_count = 2 }; // stereo
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void run( int pair_count, sample_t* out );
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// SSG interface
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inline void psg_set_clock( int clock );
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inline void psg_write( int addr, int data );
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inline int psg_read();
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inline void psg_reset();
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};
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#endif
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