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https://github.com/RaySollium99/picodrive.git
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ym2612 full saves wip
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@479 be3aeb3a-fb24-0410-a615-afba39da0efa
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notaz
parent
e5fa981777
commit
d2721b08bb
6 changed files with 199 additions and 55 deletions
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@ -1087,12 +1087,25 @@ void chan_render_loop(chan_rend_context *ct, int *buffer, unsigned short length)
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static chan_rend_context crct;
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static void chan_render_prep(void)
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{
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crct.eg_timer_add = ym2612.OPN.eg_timer_add;
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crct.lfo_inc = ym2612.OPN.lfo_inc;
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}
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static void chan_render_finish(void)
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{
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ym2612.OPN.eg_cnt = crct.eg_cnt;
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ym2612.OPN.eg_timer = crct.eg_timer;
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g_lfo_ampm = crct.pack >> 16; // need_save
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ym2612.OPN.lfo_cnt = crct.lfo_cnt;
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}
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static int chan_render(int *buffer, int length, int c, UINT32 flags) // flags: stereo, ?, disabled, ?, pan_r, pan_l
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{
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crct.CH = &ym2612.CH[c];
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crct.mem = crct.CH->mem_value; /* one sample delay memory */
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crct.lfo_cnt = ym2612.OPN.lfo_cnt;
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crct.lfo_inc = ym2612.OPN.lfo_inc;
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flags &= 0x35;
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@ -1109,7 +1122,6 @@ static int chan_render(int *buffer, int length, int c, UINT32 flags) // flags: s
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crct.eg_cnt = ym2612.OPN.eg_cnt; /* envelope generator counter */
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crct.eg_timer = ym2612.OPN.eg_timer;
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crct.eg_timer_add = ym2612.OPN.eg_timer_add;
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/* precalculate phase modulation incr */
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crct.phase1 = crct.CH->SLOT[SLOT1].phase;
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@ -1185,15 +1197,6 @@ static int chan_render(int *buffer, int length, int c, UINT32 flags) // flags: s
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else
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ym2612.slot_mask &= ~(0xf << (c*4));
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// if this the last call, write back persistent stuff:
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if ((ym2612.slot_mask >> ((c+1)*4)) == 0)
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{
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ym2612.OPN.eg_cnt = crct.eg_cnt;
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ym2612.OPN.eg_timer = crct.eg_timer;
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g_lfo_ampm = crct.pack >> 16;
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ym2612.OPN.lfo_cnt = crct.lfo_cnt;
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}
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return (crct.algo & 8) >> 3; // had output
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}
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@ -1212,10 +1215,10 @@ INLINE void refresh_fc_eg_slot(FM_SLOT *SLOT, int fc, int kc)
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SLOT->ksr = ksr;
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/* calculate envelope generator rates */
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if ((SLOT->ar + SLOT->ksr) < 32+62)
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if ((SLOT->ar + ksr) < 32+62)
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{
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eg_sh = eg_rate_shift [SLOT->ar + SLOT->ksr ];
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eg_sel = eg_rate_select[SLOT->ar + SLOT->ksr ];
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eg_sh = eg_rate_shift [SLOT->ar + ksr ];
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eg_sel = eg_rate_select[SLOT->ar + ksr ];
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}
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else
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{
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@ -1225,18 +1228,18 @@ INLINE void refresh_fc_eg_slot(FM_SLOT *SLOT, int fc, int kc)
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SLOT->eg_pack_ar = eg_inc_pack[eg_sel] | (eg_sh<<24);
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eg_sh = eg_rate_shift [SLOT->d1r + SLOT->ksr];
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eg_sel = eg_rate_select[SLOT->d1r + SLOT->ksr];
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eg_sh = eg_rate_shift [SLOT->d1r + ksr];
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eg_sel = eg_rate_select[SLOT->d1r + ksr];
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SLOT->eg_pack_d1r = eg_inc_pack[eg_sel] | (eg_sh<<24);
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eg_sh = eg_rate_shift [SLOT->d2r + SLOT->ksr];
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eg_sel = eg_rate_select[SLOT->d2r + SLOT->ksr];
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eg_sh = eg_rate_shift [SLOT->d2r + ksr];
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eg_sel = eg_rate_select[SLOT->d2r + ksr];
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SLOT->eg_pack_d2r = eg_inc_pack[eg_sel] | (eg_sh<<24);
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eg_sh = eg_rate_shift [SLOT->rr + SLOT->ksr];
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eg_sel = eg_rate_select[SLOT->rr + SLOT->ksr];
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eg_sh = eg_rate_shift [SLOT->rr + ksr];
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eg_sel = eg_rate_select[SLOT->rr + ksr];
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SLOT->eg_pack_rr = eg_inc_pack[eg_sel] | (eg_sh<<24);
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}
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@ -1634,12 +1637,14 @@ int YM2612UpdateOne_(int *buffer, int length, int stereo, int is_buf_empty)
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/* mix to 32bit dest */
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// flags: stereo, ?, disabled, ?, pan_r, pan_l
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chan_render_prep();
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if (ym2612.slot_mask & 0x00000f) active_chs |= chan_render(buffer, length, 0, stereo|((pan&0x003)<<4)) << 0;
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if (ym2612.slot_mask & 0x0000f0) active_chs |= chan_render(buffer, length, 1, stereo|((pan&0x00c)<<2)) << 1;
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if (ym2612.slot_mask & 0x000f00) active_chs |= chan_render(buffer, length, 2, stereo|((pan&0x030) )) << 2;
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if (ym2612.slot_mask & 0x00f000) active_chs |= chan_render(buffer, length, 3, stereo|((pan&0x0c0)>>2)) << 3;
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if (ym2612.slot_mask & 0x0f0000) active_chs |= chan_render(buffer, length, 4, stereo|((pan&0x300)>>4)) << 4;
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if (ym2612.slot_mask & 0xf00000) active_chs |= chan_render(buffer, length, 5, stereo|((pan&0xc00)>>6)|(ym2612.dacen<<2)) << 5;
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chan_render_finish();
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return active_chs; // 1 if buffer updated
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}
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@ -1864,6 +1869,124 @@ int YM2612PicoTick_(int n)
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void YM2612PicoStateLoad_(void)
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{
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reset_channels( &ym2612.CH[0] );
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ym2612.slot_mask = 0xffffff;
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}
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typedef struct
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{
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UINT32 state_phase;
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INT16 volume;
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} ym_save_addon_slot;
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typedef struct
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{
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UINT32 magic;
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UINT8 address;
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UINT8 status;
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UINT8 addr_A1;
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UINT8 unused;
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int TAT;
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int TBT;
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UINT32 eg_cnt;
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UINT32 eg_timer;
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UINT32 lfo_cnt;
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UINT16 lfo_ampm;
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UINT16 unused2;
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} ym_save_addon;
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void YM2612PicoStateSave2(int tat, int tbt)
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{
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ym_save_addon_slot ss;
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ym_save_addon sa;
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unsigned char *ptr;
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int c, s;
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// chans 1,2,3
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ptr = &ym2612.REGS[0x0b8];
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for (c = 0; c < 3; c++)
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{
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for (s = 0; s < 4; s++) {
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ss.state_phase = (ym2612.CH[c].SLOT[s].state << 29) | (ym2612.CH[c].SLOT[s].phase >> 3);
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ss.volume = ym2612.CH[c].SLOT[s].volume;
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memcpy(ptr, &ss, 6);
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ptr += 6;
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}
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}
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// chans 4,5,6
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ptr = &ym2612.REGS[0x1b8];
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for (; c < 6; c++)
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{
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for (s = 0; s < 4; s++) {
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ss.state_phase = (ym2612.CH[c].SLOT[s].state << 29) | (ym2612.CH[c].SLOT[s].phase >> 3);
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ss.volume = ym2612.CH[c].SLOT[s].volume;
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memcpy(ptr, &ss, 6);
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ptr += 6;
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}
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}
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// other things
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ptr = &ym2612.REGS[0x100];
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sa.magic = 0x41534d59; // 'YMSA'
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sa.address = ym2612.OPN.ST.address;
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sa.status = ym2612.OPN.ST.status;
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sa.addr_A1 = ym2612.addr_A1;
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sa.unused = 0;
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sa.TAT = tat;
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sa.TBT = tbt;
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sa.eg_cnt = ym2612.OPN.eg_cnt;
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sa.eg_timer = ym2612.OPN.eg_timer;
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sa.lfo_cnt = ym2612.OPN.lfo_cnt;
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sa.lfo_ampm = g_lfo_ampm;
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sa.unused2 = 0;
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memcpy(ptr, &sa, sizeof(sa)); // 0x30 max
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}
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int YM2612PicoStateLoad2(int *tat, int *tbt)
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{
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ym_save_addon_slot ss;
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ym_save_addon sa;
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unsigned char *ptr;
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int c, s;
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ptr = &ym2612.REGS[0x100];
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memcpy(&sa, ptr, sizeof(sa)); // 0x30 max
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if (sa.magic != 0x41534d59) return -1;
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ym2612.OPN.ST.address = sa.address;
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ym2612.OPN.ST.status = sa.status;
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ym2612.addr_A1 = sa.addr_A1;
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ym2612.OPN.eg_cnt = sa.eg_cnt;
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ym2612.OPN.eg_timer = sa.eg_timer;
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ym2612.OPN.lfo_cnt = sa.lfo_cnt;
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g_lfo_ampm = sa.lfo_ampm;
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if (tat != NULL) *tat = sa.TAT;
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if (tbt != NULL) *tbt = sa.TBT;
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// chans 1,2,3
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ptr = &ym2612.REGS[0x0b8];
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for (c = 0; c < 3; c++)
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{
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for (s = 0; s < 4; s++) {
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memcpy(&ss, ptr, 6);
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ym2612.CH[c].SLOT[s].state = ss.state_phase >> 29;
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ym2612.CH[c].SLOT[s].phase = ss.state_phase << 3;
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ym2612.CH[c].SLOT[s].volume = ss.volume;
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ptr += 6;
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}
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}
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// chans 4,5,6
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ptr = &ym2612.REGS[0x1b8];
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for (; c < 6; c++)
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{
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for (s = 0; s < 4; s++) {
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memcpy(&ss, ptr, 6);
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ym2612.CH[c].SLOT[s].state = ss.state_phase >> 29;
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ym2612.CH[c].SLOT[s].phase = ss.state_phase << 3;
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ym2612.CH[c].SLOT[s].volume = ss.volume;
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ptr += 6;
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}
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}
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return 0;
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}
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#ifndef EXTERNAL_YM2612
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