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audio: add option to switch off SSG-EG

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This commit is contained in:
kub 2020-04-22 21:40:05 +02:00
parent 1dbda5f894
commit 324bd6852e
9 changed files with 21 additions and 17 deletions
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1
pico/pico.h
View file

@ -73,6 +73,7 @@ extern void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s;
#define POPT_EN_32X (1<<20) // x0 0000
#define POPT_EN_PWM (1<<21)
#define POPT_PWM_IRQ_OPT (1<<22)
#define POPT_DIS_FM_SSGEG (1<<23)
#define PAHW_MCD (1<<0)
#define PAHW_32X (1<<1)

2
pico/sound/sound.c
View file

@ -48,7 +48,7 @@ void PsndRerate(int preserve_state)
ym2612_pack_state();
memcpy(state, YM2612GetRegs(), 0x204);
}
YM2612Init(Pico.m.pal ? OSC_PAL/7 : OSC_NTSC/7, PicoIn.sndRate);
YM2612Init(Pico.m.pal ? OSC_PAL/7 : OSC_NTSC/7, PicoIn.sndRate, !(PicoIn.opt&POPT_DIS_FM_SSGEG));
if (preserve_state) {
// feed it back it's own registers, just like after loading state
memcpy(YM2612GetRegs(), state, 0x204);

15
pico/sound/ym2612.c
View file

@ -1820,17 +1820,17 @@ int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty)
// flags: stereo, ssg_enabled, disabled, _, pan_r, pan_l
chan_render_prep();
#define BIT_IF(v,b,c) { v &= ~(1<<(b)); if (c) v |= 1<<(b); }
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x00000f));
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x00000f) && (ym2612.OPN.ST.flags & 1));
if (ym2612.slot_mask & 0x00000f) active_chs |= chan_render(buffer, length, 0, flags|((pan&0x003)<<4)) << 0;
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x0000f0));
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x0000f0) && (ym2612.OPN.ST.flags & 1));
if (ym2612.slot_mask & 0x0000f0) active_chs |= chan_render(buffer, length, 1, flags|((pan&0x00c)<<2)) << 1;
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x000f00));
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x000f00) && (ym2612.OPN.ST.flags & 1));
if (ym2612.slot_mask & 0x000f00) active_chs |= chan_render(buffer, length, 2, flags|((pan&0x030) )) << 2;
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x00f000));
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x00f000) && (ym2612.OPN.ST.flags & 1));
if (ym2612.slot_mask & 0x00f000) active_chs |= chan_render(buffer, length, 3, flags|((pan&0x0c0)>>2)) << 3;
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x0f0000));
BIT_IF(flags, 1, (ym2612.ssg_mask & 0x0f0000) && (ym2612.OPN.ST.flags & 1));
if (ym2612.slot_mask & 0x0f0000) active_chs |= chan_render(buffer, length, 4, flags|((pan&0x300)>>4)) << 4;
BIT_IF(flags, 1, (ym2612.ssg_mask & 0xf00000));
BIT_IF(flags, 1, (ym2612.ssg_mask & 0xf00000) && (ym2612.OPN.ST.flags & 1));
if (ym2612.slot_mask & 0xf00000) active_chs |= chan_render(buffer, length, 5, flags|((pan&0xc00)>>6)|(!!ym2612.dacen<<2)) << 5;
#undef BIT_IF
chan_render_finish();
@ -1840,13 +1840,14 @@ int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty)
/* initialize YM2612 emulator */
void YM2612Init_(int clock, int rate)
void YM2612Init_(int clock, int rate, int ssg)
{
memset(&ym2612, 0, sizeof(ym2612));
init_tables();
ym2612.OPN.ST.clock = clock;
ym2612.OPN.ST.rate = rate;
ym2612.OPN.ST.flags = (ssg ? 1:0);
OPNSetPres( 6*24 );

10
pico/sound/ym2612.h
View file

@ -95,7 +95,7 @@ typedef struct
UINT8 address; /* 10 address register | need_save */
UINT8 status; /* 11 status flag | need_save */
UINT8 mode; /* mode CSM / 3SLOT */
UINT8 pad;
UINT8 flags; /* operational flags */
int TA; /* timer a */
int TAC; /* timer a maxval */
int TAT; /* timer a ticker | need_save */
@ -161,7 +161,7 @@ typedef struct
extern YM2612 ym2612;
#endif
void YM2612Init_(int baseclock, int rate);
void YM2612Init_(int baseclock, int rate, int ssg);
void YM2612ResetChip_(void);
int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty);
@ -183,9 +183,9 @@ int YM2612PicoStateLoad2(int *tat, int *tbt);
#else
/* GP2X specific */
#include "../../platform/gp2x/940ctl.h"
#define YM2612Init(baseclock,rate) do { \
if (PicoIn.opt&POPT_EXT_FM) YM2612Init_940(baseclock, rate); \
else YM2612Init_(baseclock, rate); \
#define YM2612Init(baseclock,rate,ssg) do { \
if (PicoIn.opt&POPT_EXT_FM) YM2612Init_940(baseclock, rate, ssg); \
else YM2612Init_(baseclock, rate, ssg); \
} while (0)
#define YM2612ResetChip() do { \
if (PicoIn.opt&POPT_EXT_FM) YM2612ResetChip_940(); \

1
platform/common/menu_pico.c
View file

@ -499,6 +499,7 @@ static menu_entry e_menu_adv_options[] =
mee_range_h ("Overclock M68k (%)", MA_OPT2_OVERCLOCK_M68K,currentConfig.overclock_68k, 0, 1000, h_ovrclk),
mee_onoff ("Emulate Z80", MA_OPT2_ENABLE_Z80, PicoIn.opt, POPT_EN_Z80),
mee_onoff ("Emulate YM2612 (FM)", MA_OPT2_ENABLE_YM2612, PicoIn.opt, POPT_EN_FM),
mee_onoff ("Disable YM2612 SSG-EG", MA_OPT2_DISABLE_YM_SSG,PicoIn.opt, POPT_DIS_FM_SSGEG),
mee_onoff ("Emulate SN76496 (PSG)", MA_OPT2_ENABLE_SN76496,PicoIn.opt, POPT_EN_PSG),
mee_onoff ("gzip savestates", MA_OPT2_GZIP_STATES, currentConfig.EmuOpt, EOPT_GZIP_SAVES),
mee_onoff ("Don't save last used ROM", MA_OPT2_NO_LAST_ROM, currentConfig.EmuOpt, EOPT_NO_AUTOSVCFG),

1
platform/common/menu_pico.h
View file

@ -48,6 +48,7 @@ typedef enum
MA_OPT2_VSYNC,
MA_OPT2_ENABLE_Z80,
MA_OPT2_ENABLE_YM2612,
MA_OPT2_DISABLE_YM_SSG,
MA_OPT2_ENABLE_SN76496,
MA_OPT2_GZIP_STATES,
MA_OPT2_NO_LAST_ROM,

4
platform/gp2x/940ctl.c
View file

@ -282,7 +282,7 @@ void sharedmem940_finish(void)
}
void YM2612Init_940(int baseclock, int rate)
void YM2612Init_940(int baseclock, int rate, int ssg)
{
static int oldrate;
@ -339,7 +339,7 @@ void YM2612Init_940(int baseclock, int rate)
memset(shared_ctl, 0, sizeof(*shared_ctl));
/* cause local ym2612 to init REGS */
YM2612Init_(baseclock, rate);
YM2612Init_(baseclock, rate, ssg);
internal_reset();

2
platform/gp2x/940ctl.h
View file

@ -1,7 +1,7 @@
void sharedmem940_init(void);
void sharedmem940_finish(void);
void YM2612Init_940(int baseclock, int rate);
void YM2612Init_940(int baseclock, int rate, int ssg);
void YM2612ResetChip_940(void);
int YM2612UpdateOne_940(int *buffer, int length, int stereo, int is_buf_empty);

2
platform/gp2x/code940/940.c
View file

@ -167,7 +167,7 @@ void Main940(void)
case JOB940_INITALL:
/* ym2612 */
shared_ctl->writebuff0[0] = shared_ctl->writebuff1[0] = 0xffff;
YM2612Init_(shared_ctl->baseclock, shared_ctl->rate);
YM2612Init_(shared_ctl->baseclock, shared_ctl->rate, 0);
/* Helix mp3 decoder */
__malloc_init();
shared_data->mp3dec = MP3InitDecoder();