xmil/sound/opmgenc.c - diff

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Diff for /xmil/sound/opmgenc.c between versions 1.8 and 1.9

version 1.8, 2005/02/07 16:56:33	version 1.9, 2008/06/02 20:07:32
Line 12	Line 12
#define OPM_ARRATE 399128L	#define OPM_ARRATE 399128L
#define OPM_DRRATE 5514396L	#define OPM_DRRATE 5514396L

#define EG_STEP (96.0 / EVC_ENT) // dB step	#define EG_STEP (96.0 / EVC_ENT) /* dB step */
#define SC(db) (SINT32)((db) * ((3.0 / EG_STEP) * (1 << ENV_BITS))) + EC_DECAY	#define SC(db) (SINT32)((db) * ((3.0 / EG_STEP) * (1 << ENV_BITS))) + EC_DECAY
#define KF(sn) ((sn) << KF_BITS)	#define KF(sn) ((sn) << KF_BITS)
#define D2(value) (SINT32)(((double)(6 << KF_BITS)*log((double)value) / \	#define D2(value) (SINT32)(((double)(6 << KF_BITS)*log((double)value) / \
Line 61 void opmgen_initialize(UINT rate) {	Line 61 void opmgen_initialize(UINT rate) {
UINT rate1;	UINT rate1;
UINT rate2;	UINT rate2;

rate1 = rate; // 44100	rate1 = rate; /* 44100 */
rate2 = 62500;	rate2 = 62500;
while((rate1 * 2) < rate2) {	while((rate1 * 2) < rate2) {
rate2 >>= 1;	rate2 >>= 1;
Line 100 void opmgen_initialize(UINT rate) {	Line 100 void opmgen_initialize(UINT rate) {
}	}
for (i=4; i<64; i++) {	for (i=4; i<64; i++) {
freq = (double)(EVC_ENT << ENV_BITS) * FREQBASE4096;	freq = (double)(EVC_ENT << ENV_BITS) * FREQBASE4096;
if (i < 8) { // 忘れてます。	if (i < 8) { /* 忘れてます。 */
freq = 1.0 + (i & 2) 0.25;	freq = 1.0 + (i & 2) 0.25;
}	}
else if (i < 60) {	else if (i < 60) {
Line 129 void opmgen_setvol(UINT vol) {	Line 129 void opmgen_setvol(UINT vol) {
}	}


// ----	/* ---- */

static void keyon(OPMCH *ch, REG8 value) {	static void keyon(OPMCH *ch, REG8 value) {

Line 142 static void keyon(OPMCH *ch, REG8 value)	Line 142 static void keyon(OPMCH *ch, REG8 value)
slot = ch->slot;	slot = ch->slot;
bit = 0x08;	bit = 0x08;
for (i=0; i<4; i++) {	for (i=0; i<4; i++) {
if (value & bit) { // keyon	if (value & bit) { /* keyon */
if (slot->env_mode <= EM_RELEASE) {	if (slot->env_mode <= EM_RELEASE) {
slot->freq_cnt = 0;	slot->freq_cnt = 0;
if (i == OPMSLOT1) {	if (i == OPMSLOT1) {
Line 154 static void keyon(OPMCH *ch, REG8 value)	Line 154 static void keyon(OPMCH *ch, REG8 value)
slot->env_end = EC_DECAY;	slot->env_end = EC_DECAY;
}	}
}	}
else { // keyoff	else { /* keyoff */
if (slot->env_mode > EM_RELEASE) {	if (slot->env_mode > EM_RELEASE) {
slot->env_mode = EM_RELEASE;	slot->env_mode = EM_RELEASE;
if (!(slot->env_cnt & EC_DECAY)) {	if (!(slot->env_cnt & EC_DECAY)) {
Line 351 static void channelupdate(OPMCH *ch) {	Line 351 static void channelupdate(OPMCH *ch) {
}	}


//-----------------------------------------------------------------------------	/----------------------------------------------------------------------------- /

void opmgen_reset(void) {	void opmgen_reset(void) {

Line 398 void opmgen_setreg(REG8 reg, REG8 value)	Line 398 void opmgen_setreg(REG8 reg, REG8 value)
switch(reg & 0xe0) {	switch(reg & 0xe0) {
case 0x00:	case 0x00:
switch(reg) {	switch(reg) {
case 0x08: // key on/off	case 0x08: /* key on/off */
keyon(opmch + (value & 7), value);	keyon(opmch + (value & 7), value);
break;	break;

case 0x14: // mode	case 0x14: /* mode */
opmgen.mode = value;	opmgen.mode = value;
if ((value & 0x81) == 0x81) {	if ((value & 0x81) == 0x81) {
opmgen.playing++;	opmgen.playing++;
Line 428 void opmgen_setreg(REG8 reg, REG8 value)	Line 428 void opmgen_setreg(REG8 reg, REG8 value)

case 0x20:	case 0x20:
switch(reg & 0x18) {	switch(reg & 0x18) {
case 0x00: // pan feedback connection	case 0x00: /* pan feedback connection */
set_algorithm(ch, value);	set_algorithm(ch, value);
break;	break;

case 0x08: // keycode	case 0x08: /* keycode */
ch->kcode = (UINT8)((value >> 2) & 0x1f);	ch->kcode = (UINT8)((value >> 2) & 0x1f);
ch->keynote = (((value >> 4) & 7) * (12 << KF_BITS)) +	ch->keynote = (((value >> 4) & 7) * (12 << KF_BITS)) +
halftunetable[value & 0x0f] + ch->keyfunc;	halftunetable[value & 0x0f] + ch->keyfunc;
channelupdate(ch);	channelupdate(ch);
break;	break;

case 0x10: // keyfunction	case 0x10: /* keyfunction */
ch->keyfunc = (UINT8)(value >> (8 - KF_BITS));	ch->keyfunc = (UINT8)(value >> (8 - KF_BITS));
ch->keynote &= (((UINT32)-1) << KF_BITS);	ch->keynote &= (((UINT32)-1) << KF_BITS);
ch->keynote += ch->keyfunc;	ch->keynote += ch->keyfunc;
Line 448 void opmgen_setreg(REG8 reg, REG8 value)	Line 448 void opmgen_setreg(REG8 reg, REG8 value)
}	}
break;	break;

case 0x40: // DT1 MUL	case 0x40: /* DT1 MUL */
set_dt1_mul(slot, value);	set_dt1_mul(slot, value);
channelupdate(ch);	channelupdate(ch);
break;	break;

case 0x60: // TL	case 0x60: /* TL */
set_tl(slot, value);	set_tl(slot, value);
break;	break;

case 0x80: // KS AR	case 0x80: /* KS AR */
set_ks_ar(slot, value);	set_ks_ar(slot, value);
channelupdate(ch);	channelupdate(ch);
break;	break;

case 0xa0: // D1R	case 0xa0: /* D1R */
set_d1r(slot, value);	set_d1r(slot, value);
break;	break;

case 0xc0: // DT2 D2R	case 0xc0: /* DT2 D2R */
set_dt2_d2r(slot, value);	set_dt2_d2r(slot, value);
channelupdate(ch);	channelupdate(ch);
break;	break;

case 0xe0: // D1L RR	case 0xe0: /* D1L RR */
set_d1l_rr(slot, value);	set_d1l_rr(slot, value);
break;	break;
}	}

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Removed from v.1.8
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	Added in v.1.9