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32x: improve pwm accuracy

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This commit is contained in:
notaz 2013-08-03 02:08:31 +03:00
parent e7b3ad1bda
commit a7f82a776a
4 changed files with 131 additions and 63 deletions
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13
pico/pico_int.h
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@ -260,6 +260,8 @@ extern SH2 sh2s[2];
#endif
#define sh2_cycles_done(sh2) ((int)(sh2)->cycles_timeslice - sh2_cycles_left(sh2))
#define sh2_cycles_done_t(sh2) \
((sh2)->m68krcycles_done * 3 + sh2_cycles_done(sh2))
#define sh2_cycles_done_m68k(sh2) \
((sh2)->m68krcycles_done + (sh2_cycles_done(sh2) / 3))
@ -507,7 +509,9 @@ struct Pico32x
unsigned char comm_dirty_68k;
unsigned char comm_dirty_sh2;
unsigned short pad;
unsigned int reserved[8];
unsigned short pwm_p[2]; // pwm pos in fifo
unsigned int pwm_cycle_p; // pwm play cursor (32x cycles)
unsigned int reserved[6];
};
struct Pico32xMem
@ -531,6 +535,7 @@ struct Pico32xMem
unsigned short pal_native[0x100]; // converted to native (for renderer)
unsigned int sh2_peri_regs[2][0x200/4]; // periphereal regs of SH2s
signed short pwm[2*PWM_BUFF_LEN]; // PWM buffer for current frame
signed short pwm_fifo[2][4]; // [0] - current, others - fifo entries
};
// area.c
@ -771,10 +776,10 @@ enum {
extern int Pico32xDrawMode;
// 32x/pwm.c
unsigned int p32x_pwm_read16(unsigned int a);
void p32x_pwm_write16(unsigned int a, unsigned int d);
unsigned int p32x_pwm_read16(unsigned int a, unsigned int cycles);
void p32x_pwm_write16(unsigned int a, unsigned int d, unsigned int cycles);
void p32x_pwm_update(int *buf32, int length, int stereo);
void p32x_timers_do(unsigned int cycles);
void p32x_timers_do(unsigned int m68k_now, unsigned int m68k_slice);
void p32x_timers_recalc(void);
void p32x_pwm_schedule(unsigned int now);
void p32x_pwm_schedule_sh2(SH2 *sh2);