bsnes/fc/apu/apu.hpp

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struct APU : Thread {
static void Main();
void main();
void tick();
void set_irq_line();
void set_sample(int16 sample);
void power();
void reset();
uint8 read(uint16 addr);
void write(uint16 addr, uint8 data);
void serialize(serializer&);
APU();
struct Filter {
enum : signed { HiPassStrong = 225574, HiPassWeak = 57593, LoPass = 86322413 };
int64 hipass_strong;
int64 hipass_weak;
int64 lopass;
signed run_hipass_strong(signed sample);
signed run_hipass_weak(signed sample);
signed run_lopass(signed sample);
void serialize(serializer&);
} filter;
#include "envelope.hpp"
#include "sweep.hpp"
#include "pulse.hpp"
#include "triangle.hpp"
#include "noise.hpp"
#include "dmc.hpp"
struct FrameCounter {
enum : unsigned { NtscPeriod = 14915 }; //~(21.477MHz / 6 / 240hz)
bool irq_pending;
uint2 mode;
uint2 counter;
signed divider;
void serialize(serializer&);
} frame;
void clock_frame_counter();
void clock_frame_counter_divider();
uint8 enabled_channels;
int16 cartridge_sample;
int16 pulse_dac[32];
int16 dmc_triangle_noise_dac[128][16][16];
static const uint8 length_counter_table[32];
static const uint16 ntsc_dmc_period_table[16];
static const uint16 pal_dmc_period_table[16];
static const uint16 ntsc_noise_period_table[16];
static const uint16 pal_noise_period_table[16];
};
extern APU apu;