mirror of
https://github.com/retro100/dosbox-wii.git
synced 2024-09-29 18:28:35 +02:00
88 lines
3.3 KiB
C
88 lines
3.3 KiB
C
// license:GPL-2.0+
|
|
// copyright-holders:Jarek Burczynski
|
|
#ifndef MAME_SOUND_YMDELTAT_H
|
|
#define MAME_SOUND_YMDELTAT_H
|
|
|
|
#pragma once
|
|
|
|
|
|
typedef void (*STATUS_CHANGE_HANDLER)(void *chip, uint8_t status_bits);
|
|
|
|
|
|
/* DELTA-T (adpcm type B) struct */
|
|
struct YM_DELTAT { /* AT: rearranged and tightened structure */
|
|
enum {
|
|
EMULATION_MODE_NORMAL = 0,
|
|
EMULATION_MODE_YM2610 = 1,
|
|
};
|
|
|
|
uint8_t *memory;
|
|
int32_t *output_pointer;/* pointer of output pointers */
|
|
int32_t *pan; /* pan : &output_pointer[pan] */
|
|
double freqbase;
|
|
#if 0
|
|
double write_time; /* Y8950: 10 cycles of main clock; YM2608: 20 cycles of main clock */
|
|
double read_time; /* Y8950: 8 cycles of main clock; YM2608: 18 cycles of main clock */
|
|
#endif
|
|
uint32_t memory_size;
|
|
int output_range;
|
|
uint32_t now_addr; /* current address */
|
|
uint32_t now_step; /* correct step */
|
|
uint32_t step; /* step */
|
|
uint32_t start; /* start address */
|
|
uint32_t limit; /* limit address */
|
|
uint32_t end; /* end address */
|
|
uint32_t delta; /* delta scale */
|
|
int32_t volume; /* current volume */
|
|
int32_t acc; /* shift Measurement value*/
|
|
int32_t adpcmd; /* next Forecast */
|
|
int32_t adpcml; /* current value */
|
|
int32_t prev_acc; /* leveling value */
|
|
uint8_t now_data; /* current rom data */
|
|
uint8_t CPU_data; /* current data from reg 08 */
|
|
uint8_t portstate; /* port status */
|
|
uint8_t control2; /* control reg: SAMPLE, DA/AD, RAM TYPE (x8bit / x1bit), ROM/RAM */
|
|
uint8_t portshift; /* address bits shift-left:
|
|
** 8 for YM2610,
|
|
** 5 for Y8950 and YM2608 */
|
|
|
|
uint8_t DRAMportshift; /* address bits shift-right:
|
|
** 0 for ROM and x8bit DRAMs,
|
|
** 3 for x1 DRAMs */
|
|
|
|
uint8_t memread; /* needed for reading/writing external memory */
|
|
|
|
/* handlers and parameters for the status flags support */
|
|
STATUS_CHANGE_HANDLER status_set_handler;
|
|
STATUS_CHANGE_HANDLER status_reset_handler;
|
|
|
|
/* note that different chips have these flags on different
|
|
** bits of the status register
|
|
*/
|
|
void * status_change_which_chip; /* this chip id */
|
|
uint8_t status_change_EOS_bit; /* 1 on End Of Sample (record/playback/cycle time of AD/DA converting has passed)*/
|
|
uint8_t status_change_BRDY_bit; /* 1 after recording 2 datas (2x4bits) or after reading/writing 1 data */
|
|
uint8_t status_change_ZERO_bit; /* 1 if silence lasts for more than 290 milliseconds on ADPCM recording */
|
|
|
|
/* neither Y8950 nor YM2608 can generate IRQ when PCMBSY bit changes, so instead of above,
|
|
** the statusflag gets ORed with PCM_BSY (below) (on each read of statusflag of Y8950 and YM2608)
|
|
*/
|
|
uint8_t PCM_BSY; /* 1 when ADPCM is playing; Y8950/YM2608 only */
|
|
|
|
uint8_t reg[16]; /* adpcm registers */
|
|
uint8_t emulation_mode; /* which chip we're emulating */
|
|
device_t *device;
|
|
|
|
/*void BRDY_callback();*/
|
|
|
|
uint8_t ADPCM_Read();
|
|
void ADPCM_Write(int r, int v);
|
|
void ADPCM_Reset(int panidx, int mode, device_t *dev);
|
|
void ADPCM_CALC();
|
|
|
|
void postload(uint8_t *regs);
|
|
void savestate(device_t *device);
|
|
};
|
|
|
|
#endif // MAME_SOUND_YMDELTAT_H
|