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// YM2612 FM sound chip emulator
// Game_Music_Emu 0.6-pre
#ifndef YM2612_EMU_H
#define YM2612_EMU_H
struct Ym2612_Impl;
class Ym2612_Emu {
Ym2612_Impl* impl;
public:
Ym2612_Emu() { impl = 0; }
~Ym2612_Emu();
// Sets sample rate and chip clock rate, in Hz. Returns non-zero
// if error. If clock_rate=0, uses sample_rate*144
const char* set_rate( double sample_rate, double clock_rate = 0 );
// Resets to power-up state
void reset();
// Mutes voice n if bit n (1 << n) of mask is set
enum { channel_count = 6 };
void mute_voices( int mask );
// Writes addr to register 0 then data to register 1
void write0( int addr, int data );
// Writes addr to register 2 then data to register 3
void write1( int addr, int data );
// Runs and adds pair_count*2 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
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