Ym2612_Emu.h

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// YM2612 FM sound chip emulator interface
 
// Game_Music_Emu https://bitbucket.org/mpyne/game-music-emu/
#ifndef YM2612_EMU_H
#define YM2612_EMU_H
 
struct Ym2612_Impl;
 
class Ym2612_Emu  {
        Ym2612_Impl* impl;
public:
        Ym2612_Emu() { impl = 0; }
        ~Ym2612_Emu();
        
        // Set output sample rate and chip clock rates, in Hz. Returns non-zero
        // if error.
        const char* set_rate( double sample_rate, double clock_rate );
        
        // Reset to power-up state
        void reset();
        
        // Mute voice n if bit n (1 << n) of mask is set
        enum { channel_count = 6 };
        void mute_voices( int mask );
        
        // Write addr to register 0 then data to register 1
        void write0( int addr, int data );
        
        // Write addr to register 2 then data to register 3
        void write1( int addr, int data );
        
        // Run and add pair_count samples into current output buffer contents
        typedef short sample_t;
        enum { out_chan_count = 2 }; // stereo
        void run( int pair_count, sample_t* out );
};
 
#endif