diff --git a/source/sound/ym2612.c b/source/sound/ym2612.c deleted file mode 100644 index a455dfa..0000000 --- a/source/sound/ym2612.c +++ /dev/null @@ -1,2427 +0,0 @@ -/*********************************************************** - * * - * YM2612.C : YM2612 emulator * - * * - * Almost constantes are taken from the MAME core * - * * - * This source is a part of Gens project * - * Written by Stéphane Dallongeville (gens@consolemul.com) * - * Copyright (c) 2002 by Stéphane Dallongeville * - * * - ***********************************************************/ - -#include -#include -#include "shared.h" - -/******************************************** - * Partie définition * - ********************************************/ - -#define YM_DEBUG_LEVEL 0 - -#ifndef PI -#define PI 3.14159265358979323846 -#endif - -#define ATTACK 0 -#define DECAY 1 -#define SUBSTAIN 2 -#define RELEASE 3 - -// SIN_LBITS <= 16 -// LFO_HBITS <= 16 -// (SIN_LBITS + SIN_HBITS) <= 26 -// (ENV_LBITS + ENV_HBITS) <= 28 -// (LFO_LBITS + LFO_HBITS) <= 28 - -#define SIN_HBITS 12 // Sinus phase counter int part -#define SIN_LBITS (26 - SIN_HBITS) // Sinus phase counter float part (best setting) - -#if (SIN_LBITS > 16) -#define SIN_LBITS 16 // Can't be greater than 16 bits -#endif - -#define ENV_HBITS 12 // Env phase counter int part -#define ENV_LBITS (28 - ENV_HBITS) // Env phase counter float part (best setting) - -#define LFO_HBITS 10 // LFO phase counter int part -#define LFO_LBITS (28 - LFO_HBITS) // LFO phase counter float part (best setting) - -#define SIN_LENGHT (1 << SIN_HBITS) -#define ENV_LENGHT (1 << ENV_HBITS) -#define LFO_LENGHT (1 << LFO_HBITS) - -#define TL_LENGHT (ENV_LENGHT * 3) // Env + TL scaling + LFO - -#define SIN_MASK (SIN_LENGHT - 1) -#define ENV_MASK (ENV_LENGHT - 1) -#define LFO_MASK (LFO_LENGHT - 1) - -#define ENV_STEP (96.0 / ENV_LENGHT) // ENV_MAX = 96 dB - -#define ENV_ATTACK ((ENV_LENGHT * 0) << ENV_LBITS) -#define ENV_DECAY ((ENV_LENGHT * 1) << ENV_LBITS) -#define ENV_END ((ENV_LENGHT * 2) << ENV_LBITS) - -#define MAX_OUT_BITS (SIN_HBITS + SIN_LBITS + 2) // Modulation = -4 <--> +4 -#define MAX_OUT ((1 << MAX_OUT_BITS) - 1) - -//Just for tests stuff... -// -//#define COEF_MOD 0.5 -//#define MAX_OUT ((int) (((1 << MAX_OUT_BITS) - 1) * COEF_MOD)) - -#define OUT_BITS (OUTPUT_BITS - 2) -#define OUT_SHIFT (MAX_OUT_BITS - OUT_BITS) -#define LIMIT_CH_OUT ((int) (((1 << OUT_BITS) * 1.5) - 1)) - -#define PG_CUT_OFF ((int) (78.0 / ENV_STEP)) -#define ENV_CUT_OFF ((int) (68.0 / ENV_STEP)) - -#define AR_RATE 399128 -#define DR_RATE 5514396 - -//#define AR_RATE 426136 -//#define DR_RATE (AR_RATE * 12) - -#define LFO_FMS_LBITS 9 // FIXED (LFO_FMS_BASE gives somethink as 1) -#define LFO_FMS_BASE ((int) (0.05946309436 * 0.0338 * (double) (1 << LFO_FMS_LBITS))) - -#define S0 0 // Stupid typo of the YM2612 -#define S1 2 -#define S2 1 -#define S3 3 - - -void YM2612_Timers_Update(int length); -void YM2612_Special_Update (); - -// used for foward... -void Update_Chan_Algo0(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo1(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo2(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo3(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo4(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo5(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo6(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo7(channel_ *CH, int **buf, int lenght); - -void Update_Chan_Algo0_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo1_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo2_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo3_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo4_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo5_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo6_LFO(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo7_LFO(channel_ *CH, int **buf, int lenght); - -void Update_Chan_Algo0_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo1_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo2_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo3_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo4_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo5_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo6_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo7_Int(channel_ *CH, int **buf, int lenght); - -void Update_Chan_Algo0_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo1_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo2_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo3_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo4_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo5_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo6_LFO_Int(channel_ *CH, int **buf, int lenght); -void Update_Chan_Algo7_LFO_Int(channel_ *CH, int **buf, int lenght); - -// used for foward... -void Env_Attack_Next(slot_ *SL); -void Env_Decay_Next(slot_ *SL); -void Env_Substain_Next(slot_ *SL); -void Env_Release_Next(slot_ *SL); -void Env_NULL_Next(slot_ *SL); - -/******************************************** - * Partie variables * - ********************************************/ - -struct ym2612__ YM2612; - -int *SIN_TAB[SIN_LENGHT]; // SINUS TABLE (pointer on TL TABLE) -int TL_TAB[TL_LENGHT * 2]; // TOTAL LEVEL TABLE (positif and minus) -unsigned int ENV_TAB[2 * ENV_LENGHT + 8]; // ENV CURVE TABLE (attack & decay) - -//unsigned int ATTACK_TO_DECAY[ENV_LENGHT]; // Conversion from attack to decay phase -unsigned int DECAY_TO_ATTACK[ENV_LENGHT]; // Conversion from decay to attack phase - -unsigned int FINC_TAB[2048]; // Frequency step table - -unsigned int AR_TAB[128]; // Attack rate table -unsigned int DR_TAB[96]; // Decay rate table -unsigned int DT_TAB[8][32]; // Detune table -unsigned int SL_TAB[16]; // Substain level table -unsigned int NULL_RATE[32]; // Table for NULL rate - -int LFO_ENV_TAB[LFO_LENGHT]; // LFO AMS TABLE (adjusted for 11.8 dB) -int LFO_FREQ_TAB[LFO_LENGHT]; // LFO FMS TABLE -int LFO_ENV_UP[MAX_UPDATE_LENGHT]; // Temporary calculated LFO AMS (adjusted for 11.8 dB) -int LFO_FREQ_UP[MAX_UPDATE_LENGHT]; // Temporary calculated LFO FMS - -int INTER_TAB[MAX_UPDATE_LENGHT]; // Interpolation table - -int LFO_INC_TAB[8]; // LFO step table - -int in0, in1, in2, in3; // current phase calculation -int en0, en1, en2, en3; // current enveloppe calculation - -static void (*UPDATE_CHAN[8 * 8])(channel_ *CH, int **buf, int lenght) = // Update Channel functions pointer table -{ - (void *)Update_Chan_Algo0, - (void *)Update_Chan_Algo1, - (void *)Update_Chan_Algo2, - (void *)Update_Chan_Algo3, - (void *)Update_Chan_Algo4, - (void *)Update_Chan_Algo5, - (void *)Update_Chan_Algo6, - (void *)Update_Chan_Algo7, - (void *)Update_Chan_Algo0_LFO, - (void *)Update_Chan_Algo1_LFO, - (void *)Update_Chan_Algo2_LFO, - (void *)Update_Chan_Algo3_LFO, - (void *)Update_Chan_Algo4_LFO, - (void *)Update_Chan_Algo5_LFO, - (void *)Update_Chan_Algo6_LFO, - (void *)Update_Chan_Algo7_LFO, - (void *)Update_Chan_Algo0_Int, - (void *)Update_Chan_Algo1_Int, - (void *)Update_Chan_Algo2_Int, - (void *)Update_Chan_Algo3_Int, - (void *)Update_Chan_Algo4_Int, - (void *)Update_Chan_Algo5_Int, - (void *)Update_Chan_Algo6_Int, - (void *)Update_Chan_Algo7_Int, - (void *)Update_Chan_Algo0_LFO_Int, - (void *)Update_Chan_Algo1_LFO_Int, - (void *)Update_Chan_Algo2_LFO_Int, - (void *)Update_Chan_Algo3_LFO_Int, - (void *)Update_Chan_Algo4_LFO_Int, - (void *)Update_Chan_Algo5_LFO_Int, - (void *)Update_Chan_Algo6_LFO_Int, - (void *)Update_Chan_Algo7_LFO_Int -}; - -static void (*ENV_NEXT_EVENT[8])(slot_ *SL) = // Next Enveloppe phase functions pointer table -{ - (void *)Env_Attack_Next, - (void *)Env_Decay_Next, - (void *)Env_Substain_Next, - (void *)Env_Release_Next, - (void *)Env_NULL_Next, - (void *)Env_NULL_Next, - (void *)Env_NULL_Next, - (void *)Env_NULL_Next -}; - -const unsigned int DT_DEF_TAB[4 * 32] = -{ -// FD = 0 - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - -// FD = 1 - 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, - 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 8, 8, 8, 8, - -// FD = 2 - 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, - 5, 6, 6, 7, 8, 8, 9, 10, 11, 12, 13, 14, 16, 16, 16, 16, - -// FD = 3 - 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, - 8 , 8, 9, 10, 11, 12, 13, 14, 16, 17, 19, 20, 22, 22, 22, 22 -}; - -const unsigned int FKEY_TAB[16] = -{ - 0, 0, 0, 0, - 0, 0, 0, 1, - 2, 3, 3, 3, - 3, 3, 3, 3 -}; - -const unsigned int LFO_AMS_TAB[4] = -{ - 31, 4, 1, 0 -}; - -const unsigned int LFO_FMS_TAB[8] = -{ - LFO_FMS_BASE * 0, LFO_FMS_BASE * 1, - LFO_FMS_BASE * 2, LFO_FMS_BASE * 3, - LFO_FMS_BASE * 4, LFO_FMS_BASE * 6, - LFO_FMS_BASE * 12, LFO_FMS_BASE * 24 -}; - -int int_cnt; // Interpolation calculation - - -#if YM_DEBUG_LEVEL > 0 // Debug -FILE *debug_file = NULL; -#endif - -/*********************************************** - * fonctions calcul param * - ***********************************************/ - - -INLINE void CALC_FINC_SL(slot_ *SL, int finc, int kc) -{ - int ksr; - - SL->Finc = (finc + SL->DT[kc]) * SL->MUL; - - /* YM2612 Detune Bug (discovered by Nemesis) */ - if (SL->Finc < 0) - { - /* Phase overflow (best result with BLOCK = 5) */ - finc = (int)((double)FINC_TAB[0x7FF] / YM2612.Frequence) >> 2; - SL->Finc = (finc + SL->DT[kc]) * SL->MUL; - } - - ksr = kc >> SL->KSR_S; // keycode atténuation - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "FINC = %d SL->Finc = %d\n", finc, SL->Finc); -#endif - - if (SL->KSR != ksr) // si le KSR a changé alors - { // les différents taux pour l'enveloppe sont mis à jour - SL->KSR = ksr; - - SL->EincA = SL->AR[ksr]; - SL->EincD = SL->DR[ksr]; - SL->EincS = SL->SR[ksr]; - SL->EincR = SL->RR[ksr]; - - if (SL->Ecurp == ATTACK) SL->Einc = SL->EincA; - else if (SL->Ecurp == DECAY) SL->Einc = SL->EincD; - else if (SL->Ecnt < ENV_END) - { - if (SL->Ecurp == SUBSTAIN) SL->Einc = SL->EincS; - else if (SL->Ecurp == RELEASE) SL->Einc = SL->EincR; - } - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "KSR = %.4X EincA = %.8X EincD = %.8X EincS = %.8X EincR = %.8X\n", ksr, SL->EincA, SL->EincD, SL->EincS, SL->EincR); -#endif - } -} - - -INLINE void CALC_FINC_CH(channel_ *CH) -{ - int finc, kc; - - finc = FINC_TAB[CH->FNUM[0]] >> (7 - CH->FOCT[0]); - kc = CH->KC[0]; - - CALC_FINC_SL(&CH->SLOT[0], finc, kc); - CALC_FINC_SL(&CH->SLOT[1], finc, kc); - CALC_FINC_SL(&CH->SLOT[2], finc, kc); - CALC_FINC_SL(&CH->SLOT[3], finc, kc); -} - - - -/*********************************************** - * fonctions setting * - ***********************************************/ - - -INLINE void KEY_ON(channel_ *CH, int nsl) -{ - slot_ *SL = &(CH->SLOT[nsl]); // on recupère le bon pointeur de slot - - if (SL->Ecurp == RELEASE) // la touche est-elle relâchée ? - { - SL->Fcnt = 0; - - // Fix Ecco 2 splash sound - - SL->Ecnt = (DECAY_TO_ATTACK[ENV_TAB[SL->Ecnt >> ENV_LBITS]] + ENV_ATTACK) & SL->ChgEnM; - SL->ChgEnM = 0xFFFFFFFF; - -// SL->Ecnt = DECAY_TO_ATTACK[ENV_TAB[SL->Ecnt >> ENV_LBITS]] + ENV_ATTACK; -// SL->Ecnt = 0; - - SL->Einc = SL->EincA; - SL->Ecmp = ENV_DECAY; - SL->Ecurp = ATTACK; - } -} - - -INLINE void KEY_OFF(channel_ *CH, int nsl) -{ - slot_ *SL = &(CH->SLOT[nsl]); // on recupère le bon pointeur de slot - - if (SL->Ecurp != RELEASE) // la touche est-elle appuyée ? - { - if (SL->Ecnt < ENV_DECAY) // attack phase ? - { - SL->Ecnt = (ENV_TAB[SL->Ecnt >> ENV_LBITS] << ENV_LBITS) + ENV_DECAY; - } - - SL->Einc = SL->EincR; - SL->Ecmp = ENV_END; - SL->Ecurp = RELEASE; - } -} - - -INLINE void CSM_Key_Control() -{ - KEY_ON(&YM2612.CHANNEL[2], 0); - KEY_ON(&YM2612.CHANNEL[2], 1); - KEY_ON(&YM2612.CHANNEL[2], 2); - KEY_ON(&YM2612.CHANNEL[2], 3); - - /* found by Nemesis */ - KEY_OFF(&YM2612.CHANNEL[2], 0); - KEY_OFF(&YM2612.CHANNEL[2], 1); - KEY_OFF(&YM2612.CHANNEL[2], 2); - KEY_OFF(&YM2612.CHANNEL[2], 3); -} - - -int SLOT_SET(int Adr, unsigned char data) -{ - channel_ *CH; - slot_ *SL; - int nch, nsl; - - if ((nch = Adr & 3) == 3) return 1; - nsl = (Adr >> 2) & 3; - - if (Adr & 0x100) nch += 3; - - CH = &(YM2612.CHANNEL[nch]); - SL = &(CH->SLOT[nsl]); - - switch(Adr & 0xF0) - { - case 0x30: - if ((SL->MUL = (data & 0x0F))) SL->MUL <<= 1; - else SL->MUL = 1; - - SL->DT = (int *)DT_TAB[(data >> 4) & 7]; - - CH->SLOT[0].Finc = -1; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] DTMUL = %.2X\n", nch, nsl, data & 0x7F); -#endif - break; - - case 0x40: - SL->TL = data & 0x7F; - - // SOR2 do a lot of TL adjustement and this fix R.Shinobi jump sound... - YM2612_Special_Update(); - -#if ((ENV_HBITS - 7) < 0) - SL->TLL = SL->TL >> (7 - ENV_HBITS); -#else - SL->TLL = SL->TL << (ENV_HBITS - 7); -#endif - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] TL = %.2X\n", nch, nsl, SL->TL); -#endif - break; - - case 0x50: - SL->KSR_S = 3 - (data >> 6); - - CH->SLOT[0].Finc = -1; - - if (data &= 0x1F) SL->AR = (int *)&AR_TAB[data << 1]; - else SL->AR = (int *)&NULL_RATE[0]; - - SL->EincA = SL->AR[SL->KSR]; - if (SL->Ecurp == ATTACK) SL->Einc = SL->EincA; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] AR = %.2X EincA = %.6X\n", nch, nsl, data, SL->EincA); -#endif - break; - - case 0x60: - if ((SL->AMSon = (data & 0x80))) SL->AMS = CH->AMS; - else SL->AMS = 31; - - if (data &= 0x1F) SL->DR = (int *)&DR_TAB[data << 1]; - else SL->DR = (int *)&NULL_RATE[0]; - - SL->EincD = SL->DR[SL->KSR]; - if (SL->Ecurp == DECAY) SL->Einc = SL->EincD; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] AMS = %d DR = %.2X EincD = %.6X\n", nch, nsl, SL->AMSon, data, SL->EincD); -#endif - break; - - case 0x70: - if (data &= 0x1F) SL->SR = (int *)&DR_TAB[data << 1]; - else SL->SR = (int *)&NULL_RATE[0]; - - SL->EincS = SL->SR[SL->KSR]; - if ((SL->Ecurp == SUBSTAIN) && (SL->Ecnt < ENV_END)) SL->Einc = SL->EincS; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] SR = %.2X EincS = %.6X\n", nch, nsl, data, SL->EincS); -#endif - break; - - case 0x80: - SL->SLL = SL_TAB[data >> 4]; - - SL->RR = (int *)&DR_TAB[((data & 0xF) << 2) + 2]; - - SL->EincR = SL->RR[SL->KSR]; - if ((SL->Ecurp == RELEASE) && (SL->Ecnt < ENV_END)) SL->Einc = SL->EincR; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] SL = %.8X\n", nch, nsl, SL->SLL); - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] RR = %.2X EincR = %.2X\n", nch, nsl, ((data & 0xF) << 1) | 2, SL->EincR); -#endif - break; - - case 0x90: -/* - // SSG-EG envelope shapes : - // - // E At Al H - // - // 1 0 0 0 \\\\ - // - // 1 0 0 1 \___ - // - // 1 0 1 0 \/\/ - // ___ - // 1 0 1 1 \ - // - // 1 1 0 0 //// - // ___ - // 1 1 0 1 / - // - // 1 1 1 0 /\/\ - // - // 1 1 1 1 /___ - // - // E = SSG-EG enable - // At = Start negate - // Al = Altern - // H = Hold -*/ - if (data & 0x08) SL->SEG = data & 0x0F; - else SL->SEG = 0; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d], SLOT[%d] SSG-EG = %.2X\n", nch, nsl, data); -#endif - break; - } - - return 0; -} - - -int CHANNEL_SET(int Adr, unsigned char data) -{ - channel_ *CH; - int num; - - if ((num = Adr & 3) == 3) return 1; - - switch(Adr & 0xFC) - { - case 0xA0: - if (Adr & 0x100) num += 3; - CH = &(YM2612.CHANNEL[num]); - - YM2612_Special_Update(); - - CH->FNUM[0] = (CH->FNUM[0] & 0x700) + data; - CH->KC[0] = (CH->FOCT[0] << 2) | FKEY_TAB[CH->FNUM[0] >> 7]; - - CH->SLOT[0].Finc = -1; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d] part1 FNUM = %d KC = %d\n", num, CH->FNUM[0], CH->KC[0]); -#endif - break; - - case 0xA4: - if (Adr & 0x100) num += 3; - CH = &(YM2612.CHANNEL[num]); - - YM2612_Special_Update(); - - CH->FNUM[0] = (CH->FNUM[0] & 0x0FF) + ((int) (data & 0x07) << 8); - CH->FOCT[0] = (data & 0x38) >> 3; - CH->KC[0] = (CH->FOCT[0] << 2) | FKEY_TAB[CH->FNUM[0] >> 7]; - - CH->SLOT[0].Finc = -1; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d] part2 FNUM = %d FOCT = %d KC = %d\n", num, CH->FNUM[0], CH->FOCT[0], CH->KC[0]); -#endif - break; - - case 0xA8: - if (Adr < 0x100) - { - num++; - - YM2612_Special_Update(); - - YM2612.CHANNEL[2].FNUM[num] = (YM2612.CHANNEL[2].FNUM[num] & 0x700) + data; - YM2612.CHANNEL[2].KC[num] = (YM2612.CHANNEL[2].FOCT[num] << 2) | FKEY_TAB[YM2612.CHANNEL[2].FNUM[num] >> 7]; - - YM2612.CHANNEL[2].SLOT[0].Finc = -1; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[2] part1 FNUM[%d] = %d KC[%d] = %d\n", num, YM2612.CHANNEL[2].FNUM[num], num, YM2612.CHANNEL[2].KC[num]); -#endif - } - break; - - case 0xAC: - if (Adr < 0x100) - { - num++; - - YM2612_Special_Update(); - - YM2612.CHANNEL[2].FNUM[num] = (YM2612.CHANNEL[2].FNUM[num] & 0x0FF) + ((int) (data & 0x07) << 8); - YM2612.CHANNEL[2].FOCT[num] = (data & 0x38) >> 3; - YM2612.CHANNEL[2].KC[num] = (YM2612.CHANNEL[2].FOCT[num] << 2) | FKEY_TAB[YM2612.CHANNEL[2].FNUM[num] >> 7]; - - YM2612.CHANNEL[2].SLOT[0].Finc = -1; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[2] part2 FNUM[%d] = %d FOCT[%d] = %d KC[%d] = %d\n", num, YM2612.CHANNEL[2].FNUM[num], num, YM2612.CHANNEL[2].FOCT[num], num, YM2612.CHANNEL[2].KC[num]); -#endif - } - break; - - case 0xB0: - if (Adr & 0x100) num += 3; - CH = &(YM2612.CHANNEL[num]); - - if (CH->ALGO != (data & 7)) - { - // Fix VectorMan 2 heli sound (level 1) - YM2612_Special_Update(); - - CH->ALGO = data & 7; - - CH->SLOT[0].ChgEnM = 0; - CH->SLOT[1].ChgEnM = 0; - CH->SLOT[2].ChgEnM = 0; - CH->SLOT[3].ChgEnM = 0; - } - - CH->FB = 9 - ((data >> 3) & 7); // Real thing ? - -// if (CH->FB = ((data >> 3) & 7)) CH->FB = 9 - CH->FB; // Thunder force 4 (music stage 8), Gynoug, Aladdin bug sound... -// else CH->FB = 31; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "CHANNEL[%d] ALGO = %d FB = %d\n", num, CH->ALGO, CH->FB); -#endif - break; - - case 0xB4: - if (Adr & 0x100) num += 3; - CH = &(YM2612.CHANNEL[num]); - - YM2612_Special_Update(); - - if (data & 0x80) CH->LEFT = 0xFFFFFFFF; - else CH->LEFT = 0; - - if (data & 0x40) CH->RIGHT = 0xFFFFFFFF; - else CH->RIGHT = 0; - - CH->AMS = LFO_AMS_TAB[(data >> 4) & 3]; - CH->FMS = LFO_FMS_TAB[data & 7]; - - if (CH->SLOT[0].AMSon) CH->SLOT[0].AMS = CH->AMS; - else CH->SLOT[0].AMS = 31; - if (CH->SLOT[1].AMSon) CH->SLOT[1].AMS = CH->AMS; - else CH->SLOT[1].AMS = 31; - if (CH->SLOT[2].AMSon) CH->SLOT[2].AMS = CH->AMS; - else CH->SLOT[2].AMS = 31; - if (CH->SLOT[3].AMSon) CH->SLOT[3].AMS = CH->AMS; - else CH->SLOT[3].AMS = 31; - -#if YM_DEBUG_LEVEL > 0 - fprintf(debug_file, "CHANNEL[%d] AMS = %d FMS = %d\n", num, CH->AMS, CH->FMS); -#endif - break; - } - - return 0; -} - - -int YM_SET(int Adr, unsigned char data) -{ - channel_ *CH; - int nch; - - switch(Adr) - { - case 0x22: - if (data & 8) - { - // Cool Spot music 1, LFO modified severals time which - // distord the sound, have to check that on a real genesis... - - YM2612.LFOinc = LFO_INC_TAB[data & 7]; - -#if YM_DEBUG_LEVEL > 0 - fprintf(debug_file, "\nLFO Enable, LFOinc = %.8X %d\n", YM2612.LFOinc, data & 7); -#endif - } - else - { - YM2612.LFOinc = YM2612.LFOcnt = 0; - -#if YM_DEBUG_LEVEL > 0 - fprintf(debug_file, "\nLFO Disable\n"); -#endif - } - break; - - case 0x24: - YM2612.TimerA = (YM2612.TimerA & 0x003) | (((int) data) << 2); - YM2612.TimerAL = (1024 - YM2612.TimerA) << 12; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "Timer A Set = %.8X\n", YM2612.TimerAL); -#endif - break; - - case 0x25: - YM2612.TimerA = (YM2612.TimerA & 0x3fc) | (data & 3); - YM2612.TimerAL = (1024 - YM2612.TimerA) << 12; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "Timer A Set = %.8X\n", YM2612.TimerAL); -#endif - break; - - case 0x26: - YM2612.TimerB = data; - YM2612.TimerBL = (256 - YM2612.TimerB) << (4 + 12); - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "Timer B Set = %.8X\n", YM2612.TimerBL); -#endif - break; - - case 0x27: - // Paramètre divers - // b7 = CSM MODE - // b6 = 3 slot mode - // b5 = reset b - // b4 = reset a - // b3 = timer enable b - // b2 = timer enable a - // b1 = load b - // b0 = load a - - if ((data ^ YM2612.Mode) & 0xC0) - { - // We changed the channel 2 mode, so recalculate phase step - // This fix the punch sound in Street of Rage 2 - - YM2612_Special_Update(); - - YM2612.CHANNEL[2].SLOT[0].Finc = -1; // recalculate phase step - } - - if ((data & 2) && !(YM2612.Mode & 2)) YM2612.TimerBcnt = YM2612.TimerBL; - if ((data & 1) && !(YM2612.Mode & 1)) YM2612.TimerAcnt = YM2612.TimerAL; - - YM2612.Status &= (~data >> 4)/* & (data >> 2)*/; // Reset Status - - YM2612.Mode = data; - -#if YM_DEBUG_LEVEL > 0 - fprintf(debug_file, "Mode reg = %.2X\n", data); -#endif - break; - - case 0x28: - if ((nch = data & 3) == 3) return 1; - - if (data & 4) nch += 3; - CH = &(YM2612.CHANNEL[nch]); - - YM2612_Special_Update(); - - if (data & 0x10) KEY_ON(CH, S0); // On appuie sur la touche pour le slot 1 - else KEY_OFF(CH, S0); // On relâche la touche pour le slot 1 - if (data & 0x20) KEY_ON(CH, S1); // On appuie sur la touche pour le slot 3 - else KEY_OFF(CH, S1); // On relâche la touche pour le slot 3 - if (data & 0x40) KEY_ON(CH, S2); // On appuie sur la touche pour le slot 2 - else KEY_OFF(CH, S2); // On relâche la touche pour le slot 2 - if (data & 0x80) KEY_ON(CH, S3); // On appuie sur la touche pour le slot 4 - else KEY_OFF(CH, S3); // On relâche la touche pour le slot 4 - -#if YM_DEBUG_LEVEL > 0 - fprintf(debug_file, "CHANNEL[%d] KEY %.1X\n", nch, ((data & 0xf0) >> 4)); -#endif - break; - - case 0x2A: - YM2612.DACdata = ((int) data - 0x80) << 7; // donnée du DAC - break; - - case 0x2B: - if (YM2612.DAC ^ (data & 0x80)) YM2612_Special_Update(); - - YM2612.DAC = data & 0x80; // activation/désactivation du DAC - break; - } - - return 0; -} - - - -/*********************************************** - * fonctions de génération * - ***********************************************/ - - -void Env_NULL_Next(slot_ *SL) -{ -} - - -void Env_Attack_Next(slot_ *SL) -{ - // Verified with Gynoug even in HQ (explode SFX) - SL->Ecnt = ENV_DECAY; - - SL->Einc = SL->EincD; - SL->Ecmp = SL->SLL; - SL->Ecurp = DECAY; -} - - -void Env_Decay_Next(slot_ *SL) -{ - // Verified with Gynoug even in HQ (explode SFX) - SL->Ecnt = SL->SLL; - - SL->Einc = SL->EincS; - SL->Ecmp = ENV_END; - SL->Ecurp = SUBSTAIN; -} - - -void Env_Substain_Next(slot_ *SL) -{ - if (SL->SEG & 8) // SSG envelope type - { - if (SL->SEG & 1) - { - SL->Ecnt = ENV_END; - SL->Einc = 0; - SL->Ecmp = ENV_END + 1; - } - else - { - // re KEY ON - // SL->Fcnt = 0; - // SL->ChgEnM = 0xFFFFFFFF; - SL->Ecnt = 0; - SL->Einc = SL->EincA; - SL->Ecmp = ENV_DECAY; - SL->Ecurp = ATTACK; - } - - SL->SEG ^= (SL->SEG & 2) << 1; - } - else - { - SL->Ecnt = ENV_END; - SL->Einc = 0; - SL->Ecmp = ENV_END + 1; - } -} - - -void Env_Release_Next(slot_ *SL) -{ - SL->Ecnt = ENV_END; - SL->Einc = 0; - SL->Ecmp = ENV_END + 1; -} - - -#define GET_CURRENT_PHASE \ -in0 = CH->SLOT[S0].Fcnt; \ -in1 = CH->SLOT[S1].Fcnt; \ -in2 = CH->SLOT[S2].Fcnt; \ -in3 = CH->SLOT[S3].Fcnt; - - -#define UPDATE_PHASE \ -CH->SLOT[S0].Fcnt += CH->SLOT[S0].Finc; \ -CH->SLOT[S1].Fcnt += CH->SLOT[S1].Finc; \ -CH->SLOT[S2].Fcnt += CH->SLOT[S2].Finc; \ -CH->SLOT[S3].Fcnt += CH->SLOT[S3].Finc; - - -#define UPDATE_PHASE_LFO \ -if ((freq_LFO = (CH->FMS * LFO_FREQ_UP[i]) >> (LFO_HBITS - 1))) \ -{ \ - CH->SLOT[S0].Fcnt += CH->SLOT[S0].Finc + ((CH->SLOT[S0].Finc * freq_LFO) >> LFO_FMS_LBITS); \ - CH->SLOT[S1].Fcnt += CH->SLOT[S1].Finc + ((CH->SLOT[S1].Finc * freq_LFO) >> LFO_FMS_LBITS); \ - CH->SLOT[S2].Fcnt += CH->SLOT[S2].Finc + ((CH->SLOT[S2].Finc * freq_LFO) >> LFO_FMS_LBITS); \ - CH->SLOT[S3].Fcnt += CH->SLOT[S3].Finc + ((CH->SLOT[S3].Finc * freq_LFO) >> LFO_FMS_LBITS); \ -} \ -else \ -{ \ - CH->SLOT[S0].Fcnt += CH->SLOT[S0].Finc; \ - CH->SLOT[S1].Fcnt += CH->SLOT[S1].Finc; \ - CH->SLOT[S2].Fcnt += CH->SLOT[S2].Finc; \ - CH->SLOT[S3].Fcnt += CH->SLOT[S3].Finc; \ -} - - -#define GET_CURRENT_ENV \ -if (CH->SLOT[S0].SEG & 4) \ -{ \ - if ((en0 = ENV_TAB[(CH->SLOT[S0].Ecnt >> ENV_LBITS)] + CH->SLOT[S0].TLL) > ENV_MASK) en0 = 0; \ - else en0 ^= ENV_MASK; \ -} \ -else en0 = ENV_TAB[(CH->SLOT[S0].Ecnt >> ENV_LBITS)] + CH->SLOT[S0].TLL; \ -if (CH->SLOT[S1].SEG & 4) \ -{ \ - if ((en1 = ENV_TAB[(CH->SLOT[S1].Ecnt >> ENV_LBITS)] + CH->SLOT[S1].TLL) > ENV_MASK) en1 = 0; \ - else en1 ^= ENV_MASK; \ -} \ -else en1 = ENV_TAB[(CH->SLOT[S1].Ecnt >> ENV_LBITS)] + CH->SLOT[S1].TLL; \ -if (CH->SLOT[S2].SEG & 4) \ -{ \ - if ((en2 = ENV_TAB[(CH->SLOT[S2].Ecnt >> ENV_LBITS)] + CH->SLOT[S2].TLL) > ENV_MASK) en2 = 0; \ - else en2 ^= ENV_MASK; \ -} \ -else en2 = ENV_TAB[(CH->SLOT[S2].Ecnt >> ENV_LBITS)] + CH->SLOT[S2].TLL; \ -if (CH->SLOT[S3].SEG & 4) \ -{ \ - if ((en3 = ENV_TAB[(CH->SLOT[S3].Ecnt >> ENV_LBITS)] + CH->SLOT[S3].TLL) > ENV_MASK) en3 = 0; \ - else en3 ^= ENV_MASK; \ -} \ -else en3 = ENV_TAB[(CH->SLOT[S3].Ecnt >> ENV_LBITS)] + CH->SLOT[S3].TLL; - - -#define GET_CURRENT_ENV_LFO \ -env_LFO = LFO_ENV_UP[i]; \ - \ -if (CH->SLOT[S0].SEG & 4) \ -{ \ - if ((en0 = ENV_TAB[(CH->SLOT[S0].Ecnt >> ENV_LBITS)] + CH->SLOT[S0].TLL) > ENV_MASK) en0 = 0; \ - else en0 = (en0 ^ ENV_MASK) + (env_LFO >> CH->SLOT[S0].AMS); \ -} \ -else en0 = ENV_TAB[(CH->SLOT[S0].Ecnt >> ENV_LBITS)] + CH->SLOT[S0].TLL + (env_LFO >> CH->SLOT[S0].AMS); \ -if (CH->SLOT[S1].SEG & 4) \ -{ \ - if ((en1 = ENV_TAB[(CH->SLOT[S1].Ecnt >> ENV_LBITS)] + CH->SLOT[S1].TLL) > ENV_MASK) en1 = 0; \ - else en1 = (en1 ^ ENV_MASK) + (env_LFO >> CH->SLOT[S1].AMS); \ -} \ -else en1 = ENV_TAB[(CH->SLOT[S1].Ecnt >> ENV_LBITS)] + CH->SLOT[S1].TLL + (env_LFO >> CH->SLOT[S1].AMS); \ -if (CH->SLOT[S2].SEG & 4) \ -{ \ - if ((en2 = ENV_TAB[(CH->SLOT[S2].Ecnt >> ENV_LBITS)] + CH->SLOT[S2].TLL) > ENV_MASK) en2 = 0; \ - else en2 = (en2 ^ ENV_MASK) + (env_LFO >> CH->SLOT[S2].AMS); \ -} \ -else en2 = ENV_TAB[(CH->SLOT[S2].Ecnt >> ENV_LBITS)] + CH->SLOT[S2].TLL + (env_LFO >> CH->SLOT[S2].AMS); \ -if (CH->SLOT[S3].SEG & 4) \ -{ \ - if ((en3 = ENV_TAB[(CH->SLOT[S3].Ecnt >> ENV_LBITS)] + CH->SLOT[S3].TLL) > ENV_MASK) en3 = 0; \ - else en3 = (en3 ^ ENV_MASK) + (env_LFO >> CH->SLOT[S3].AMS); \ -} \ -else en3 = ENV_TAB[(CH->SLOT[S3].Ecnt >> ENV_LBITS)] + CH->SLOT[S3].TLL + (env_LFO >> CH->SLOT[S3].AMS); - - -#define UPDATE_ENV \ -if ((CH->SLOT[S0].Ecnt += CH->SLOT[S0].Einc) >= CH->SLOT[S0].Ecmp) \ - ENV_NEXT_EVENT[CH->SLOT[S0].Ecurp](&(CH->SLOT[S0])); \ -if ((CH->SLOT[S1].Ecnt += CH->SLOT[S1].Einc) >= CH->SLOT[S1].Ecmp) \ - ENV_NEXT_EVENT[CH->SLOT[S1].Ecurp](&(CH->SLOT[S1])); \ -if ((CH->SLOT[S2].Ecnt += CH->SLOT[S2].Einc) >= CH->SLOT[S2].Ecmp) \ - ENV_NEXT_EVENT[CH->SLOT[S2].Ecurp](&(CH->SLOT[S2])); \ -if ((CH->SLOT[S3].Ecnt += CH->SLOT[S3].Einc) >= CH->SLOT[S3].Ecmp) \ - ENV_NEXT_EVENT[CH->SLOT[S3].Ecurp](&(CH->SLOT[S3])); - - -#define DO_LIMIT \ -if (CH->OUTd > LIMIT_CH_OUT) CH->OUTd = LIMIT_CH_OUT; \ -else if (CH->OUTd < -LIMIT_CH_OUT) CH->OUTd = -LIMIT_CH_OUT; - - -#define DO_FEEDBACK0 \ -in0 += CH->S0_OUT[0] >> CH->FB; \ -CH->S0_OUT[0] = SIN_TAB[(in0 >> SIN_LBITS) & SIN_MASK][en0]; - - -#define DO_FEEDBACK \ -in0 += (CH->S0_OUT[0] + CH->S0_OUT[1]) >> CH->FB; \ -CH->S0_OUT[1] = CH->S0_OUT[0]; \ -CH->S0_OUT[0] = SIN_TAB[(in0 >> SIN_LBITS) & SIN_MASK][en0]; - - -#define DO_FEEDBACK2 \ -in0 += (CH->S0_OUT[0] + (CH->S0_OUT[0] >> 2) + CH->S0_OUT[1]) >> CH->FB; \ -CH->S0_OUT[1] = CH->S0_OUT[0] >> 2; \ -CH->S0_OUT[0] = SIN_TAB[(in0 >> SIN_LBITS) & SIN_MASK][en0]; - - -#define DO_FEEDBACK3 \ -in0 += (CH->S0_OUT[0] + CH->S0_OUT[1] + CH->S0_OUT[2] + CH->S0_OUT[3]) >> CH->FB; \ -CH->S0_OUT[3] = CH->S0_OUT[2] >> 1; \ -CH->S0_OUT[2] = CH->S0_OUT[1] >> 1; \ -CH->S0_OUT[1] = CH->S0_OUT[0] >> 1; \ -CH->S0_OUT[0] = SIN_TAB[(in0 >> SIN_LBITS) & SIN_MASK][en0]; - - -#define DO_ALGO_0 \ -DO_FEEDBACK \ -in1 += CH->S0_OUT[1]; \ -in2 += SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1]; \ -in3 += SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]; \ -CH->OUTd = (SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3]) >> OUT_SHIFT; - -#define DO_ALGO_1 \ -DO_FEEDBACK \ -in2 += CH->S0_OUT[1] + SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1]; \ -in3 += SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]; \ -CH->OUTd = (SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3]) >> OUT_SHIFT; - -#define DO_ALGO_2 \ -DO_FEEDBACK \ -in2 += SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1]; \ -in3 += CH->S0_OUT[1] + SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]; \ -CH->OUTd = (SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3]) >> OUT_SHIFT; - -#define DO_ALGO_3 \ -DO_FEEDBACK \ -in1 += CH->S0_OUT[1]; \ -in3 += SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1] + SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]; \ -CH->OUTd = (SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3]) >> OUT_SHIFT; - -#define DO_ALGO_4 \ -DO_FEEDBACK \ -in1 += CH->S0_OUT[1]; \ -in3 += SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]; \ -CH->OUTd = ((int) SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3] + (int) SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1]) >> OUT_SHIFT; \ -DO_LIMIT - -#define DO_ALGO_5 \ -DO_FEEDBACK \ -in1 += CH->S0_OUT[1]; \ -in2 += CH->S0_OUT[1]; \ -in3 += CH->S0_OUT[1]; \ -CH->OUTd = ((int) SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3] + (int) SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1] + (int) SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]) >> OUT_SHIFT; \ -DO_LIMIT - -#define DO_ALGO_6 \ -DO_FEEDBACK \ -in1 += CH->S0_OUT[1]; \ -CH->OUTd = ((int) SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3] + (int) SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1] + (int) SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2]) >> OUT_SHIFT; \ -DO_LIMIT - -#define DO_ALGO_7 \ -DO_FEEDBACK \ -CH->OUTd = ((int) SIN_TAB[(in3 >> SIN_LBITS) & SIN_MASK][en3] + (int) SIN_TAB[(in1 >> SIN_LBITS) & SIN_MASK][en1] + (int) SIN_TAB[(in2 >> SIN_LBITS) & SIN_MASK][en2] + CH->S0_OUT[1]) >> OUT_SHIFT; \ -DO_LIMIT - - -#define DO_OUTPUT \ -buf[0][i] += CH->OUTd & CH->LEFT; \ -buf[1][i] += CH->OUTd & CH->RIGHT; - - -#define DO_OUTPUT_INT0 \ -if ((int_cnt += YM2612.Inter_Step) & 0x04000) \ -{ \ - int_cnt &= 0x3FFF; \ - buf[0][i] += CH->OUTd & CH->LEFT; \ - buf[1][i] += CH->OUTd & CH->RIGHT; \ -} \ -else i--; - - -#define DO_OUTPUT_INT1 \ -CH->Old_OUTd = (CH->OUTd + CH->Old_OUTd) >> 1; \ -if ((int_cnt += YM2612.Inter_Step) & 0x04000) \ -{ \ - int_cnt &= 0x3FFF; \ - buf[0][i] += CH->Old_OUTd & CH->LEFT; \ - buf[1][i] += CH->Old_OUTd & CH->RIGHT; \ -} \ -else i--; - - -#define DO_OUTPUT_INT2 \ -if ((int_cnt += YM2612.Inter_Step) & 0x04000) \ -{ \ - int_cnt &= 0x3FFF; \ - CH->Old_OUTd = (CH->OUTd + CH->Old_OUTd) >> 1; \ - buf[0][i] += CH->Old_OUTd & CH->LEFT; \ - buf[1][i] += CH->Old_OUTd & CH->RIGHT; \ -} \ -else i--; \ -CH->Old_OUTd = CH->OUTd; - - -#define DO_OUTPUT_INT \ -if ((int_cnt += YM2612.Inter_Step) & 0x04000) \ -{ \ - int_cnt &= 0x3FFF; \ - CH->Old_OUTd = (((int_cnt ^ 0x3FFF) * CH->OUTd) + (int_cnt * CH->Old_OUTd)) >> 14; \ - buf[0][i] += CH->Old_OUTd & CH->LEFT; \ - buf[1][i] += CH->Old_OUTd & CH->RIGHT; \ -} \ -else i--; \ -CH->Old_OUTd = CH->OUTd; - - -void Update_Chan_Algo0(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 0 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_0 - DO_OUTPUT - } -} - - -void Update_Chan_Algo1(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 1 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_1 - DO_OUTPUT - } -} - - -void Update_Chan_Algo2(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 2 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_2 - DO_OUTPUT - } -} - - -void Update_Chan_Algo3(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 3 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_3 - DO_OUTPUT - } -} - - -void Update_Chan_Algo4(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 4 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_4 - DO_OUTPUT - } -} - - -void Update_Chan_Algo5(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 5 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_5 - DO_OUTPUT - } -} - - -void Update_Chan_Algo6(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 6 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_6 - DO_OUTPUT - } -} - - -void Update_Chan_Algo7(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S0].Ecnt == ENV_END) && (CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 7 len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_7 - DO_OUTPUT - } -} - - -void Update_Chan_Algo0_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 0 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_0 - DO_OUTPUT - } -} - - -void Update_Chan_Algo1_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 1 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_1 - DO_OUTPUT - } -} - - -void Update_Chan_Algo2_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 2 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_2 - DO_OUTPUT - } -} - - -void Update_Chan_Algo3_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 3 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_3 - DO_OUTPUT - } -} - - -void Update_Chan_Algo4_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 4 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_4 - DO_OUTPUT - } -} - - -void Update_Chan_Algo5_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 5 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_5 - DO_OUTPUT - } -} - - -void Update_Chan_Algo6_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 6 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_6 - DO_OUTPUT - } -} - - -void Update_Chan_Algo7_LFO(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S0].Ecnt == ENV_END) && (CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 7 LFO len = %d\n\n", lenght); -#endif - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_7 - DO_OUTPUT - } -} - - -/****************************************************** - * Interpolated output * - *****************************************************/ - - -void Update_Chan_Algo0_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 0 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_0 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo1_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 1 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_1 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo2_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 2 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_2 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo3_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 3 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_3 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo4_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 4 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_4 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo5_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 5 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_5 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo6_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 6 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_6 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo7_Int(channel_ *CH, int **buf, int lenght) -{ - int i; - - if ((CH->SLOT[S0].Ecnt == ENV_END) && (CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 7 len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE - GET_CURRENT_ENV - UPDATE_ENV - DO_ALGO_7 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo0_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 0 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_0 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo1_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 1 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_1 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo2_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 2 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_2 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo3_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if (CH->SLOT[S3].Ecnt == ENV_END) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 3 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_3 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo4_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 4 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_4 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo5_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 5 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_5 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo6_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 6 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_6 - DO_OUTPUT_INT - } -} - - -void Update_Chan_Algo7_LFO_Int(channel_ *CH, int **buf, int lenght) -{ - int i, env_LFO, freq_LFO; - - if ((CH->SLOT[S0].Ecnt == ENV_END) && (CH->SLOT[S1].Ecnt == ENV_END) && (CH->SLOT[S2].Ecnt == ENV_END) && (CH->SLOT[S3].Ecnt == ENV_END)) return; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nAlgo 7 LFO len = %d\n\n", lenght); -#endif - - int_cnt = YM2612.Inter_Cnt; - - for(i = 0; i < lenght; i++) - { - GET_CURRENT_PHASE - UPDATE_PHASE_LFO - GET_CURRENT_ENV_LFO - UPDATE_ENV - DO_ALGO_7 - DO_OUTPUT_INT - } -} - - - -/*********************************************** - * fonctions publiques * - ***********************************************/ - -static long dac_highpass; - -// Initialisation de l'émulateur YM2612 -int YM2612_Init(int Clock, int Rate, int Interpolation) -{ - int i, j; - double x; - - if ((Rate == 0) || (Clock == 0)) return 1; - - memset(&YM2612, 0, sizeof(YM2612)); - -#if YM_DEBUG_LEVEL > 0 - if (debug_file == NULL) - { - debug_file = fopen("ym2612.log", "w"); - fprintf(debug_file, "YM2612 logging :\n\n"); - } -#endif - - YM2612.Clock = Clock; - YM2612.Rate = Rate; - - // 144 = 12 * (prescale * 2) = 12 * 6 * 2 - // prescale set to 6 by default - - YM2612.Frequence = ((double) YM2612.Clock / (double) YM2612.Rate) / 144.0; - YM2612.TimerBase = (int) (YM2612.Frequence * 4096.0); - - if ((Interpolation) && (YM2612.Frequence > 1.0)) - { - YM2612.Inter_Step = (unsigned int) ((1.0 / YM2612.Frequence) * (double) (0x4000)); - YM2612.Inter_Cnt = 0; - - // We recalculate rate and frequence after interpolation - - YM2612.Rate = YM2612.Clock / 144; - YM2612.Frequence = 1.0; - } - else - { - YM2612.Inter_Step = 0x4000; - YM2612.Inter_Cnt = 0; - } - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "YM2612 frequence = %g rate = %d interp step = %.8X\n\n", YM2612.Frequence, YM2612.Rate, YM2612.Inter_Step); -#endif - - // Tableau TL : - // [0 - 4095] = +output [4095 - ...] = +output overflow (fill with 0) - // [12288 - 16383] = -output [16384 - ...] = -output overflow (fill with 0) - - for(i = 0; i < TL_LENGHT; i++) - { - if (i >= PG_CUT_OFF) // YM2612 cut off sound after 78 dB (14 bits output ?) - { - TL_TAB[TL_LENGHT + i] = TL_TAB[i] = 0; - } - else - { - x = MAX_OUT; // Max output - x /= pow(10, (ENV_STEP * i) / 20); // Decibel -> Voltage - - TL_TAB[i] = (int) x; - TL_TAB[TL_LENGHT + i] = -TL_TAB[i]; - } - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "TL_TAB[%d] = %.8X TL_TAB[%d] = %.8X\n", i, TL_TAB[i], TL_LENGHT + i, TL_TAB[TL_LENGHT + i]); -#endif - } - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "\n\n\n\n"); -#endif - - // Tableau SIN : - // SIN_TAB[x][y] = sin(x) * y; - // x = phase and y = volume - - SIN_TAB[0] = SIN_TAB[SIN_LENGHT / 2] = &TL_TAB[(int)PG_CUT_OFF]; - - for(i = 1; i <= SIN_LENGHT / 4; i++) - { - x = sin(2.0 * PI * (double) (i) / (double) (SIN_LENGHT)); // Sinus - x = 20 * log10(1 / x); // convert to dB - - j = (int) (x / ENV_STEP); // Get TL range - - if (j > PG_CUT_OFF) j = (int) PG_CUT_OFF; - - SIN_TAB[i] = SIN_TAB[(SIN_LENGHT / 2) - i] = &TL_TAB[j]; - SIN_TAB[(SIN_LENGHT / 2) + i] = SIN_TAB[SIN_LENGHT - i] = &TL_TAB[TL_LENGHT + j]; - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "SIN[%d][0] = %.8X SIN[%d][0] = %.8X SIN[%d][0] = %.8X SIN[%d][0] = %.8X\n", i, SIN_TAB[i][0], (SIN_LENGHT / 2) - i, SIN_TAB[(SIN_LENGHT / 2) - i][0], (SIN_LENGHT / 2) + i, SIN_TAB[(SIN_LENGHT / 2) + i][0], SIN_LENGHT - i, SIN_TAB[SIN_LENGHT - i][0]); -#endif - } - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "\n\n\n\n"); -#endif - - // Tableau LFO (LFO wav) : - - for(i = 0; i < LFO_LENGHT; i++) - { - x = sin(2.0 * PI * (double) (i) / (double) (LFO_LENGHT)); // Sinus - x += 1.0; - x /= 2.0; // positive only - x *= 11.8 / ENV_STEP; // ajusted to MAX enveloppe modulation - - LFO_ENV_TAB[i] = (int) x; - - x = sin(2.0 * PI * (double) (i) / (double) (LFO_LENGHT)); // Sinus - x *= (double) ((1 << (LFO_HBITS - 1)) - 1); - - LFO_FREQ_TAB[i] = (int) x; - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "LFO[%d] = %.8X\n", i, LFO_ENV_TAB[i]); -#endif - } - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "\n\n\n\n"); -#endif - - // Tableau Enveloppe : - // ENV_TAB[0] -> ENV_TAB[ENV_LENGHT - 1] = attack curve - // ENV_TAB[ENV_LENGHT] -> ENV_TAB[2 * ENV_LENGHT - 1] = decay curve - - for(i = 0; i < ENV_LENGHT; i++) - { - // Attack curve (x^8 - music level 2 Vectorman 2) - x = pow(((double) ((ENV_LENGHT - 1) - i) / (double) (ENV_LENGHT)), 8); - x *= ENV_LENGHT; - - ENV_TAB[i] = (int) x; - - // Decay curve (just linear) - x = pow(((double) (i) / (double) (ENV_LENGHT)), 1); - x *= ENV_LENGHT; - - ENV_TAB[ENV_LENGHT + i] = (int) x; - -#if YM_DEBUG_LEVEL > 2 - fprintf(debug_file, "ATTACK[%d] = %d DECAY[%d] = %d\n", i, ENV_TAB[i], i, ENV_TAB[ENV_LENGHT + i]); -#endif - } - - ENV_TAB[ENV_END >> ENV_LBITS] = ENV_LENGHT - 1; // for the stopped state - - // Tableau pour la conversion Attack -> Decay and Decay -> Attack - - for(i = 0, j = ENV_LENGHT - 1; i < ENV_LENGHT; i++) - { - while (j && (ENV_TAB[j] < (unsigned) i)) j--; - - DECAY_TO_ATTACK[i] = j << ENV_LBITS; - } - - // Tableau pour le Substain Level - - for(i = 0; i < 15; i++) - { - x = i * 3; // 3 and not 6 (Mickey Mania first music for test) - x /= ENV_STEP; - - j = (int) x; - j <<= ENV_LBITS; - - SL_TAB[i] = j + ENV_DECAY; - } - - j = ENV_LENGHT - 1; // special case : volume off - j <<= ENV_LBITS; - SL_TAB[15] = j + ENV_DECAY; - - // Tableau Frequency Step - - for(i = 0; i < 2048; i++) - { - x = (double) (i) * YM2612.Frequence; - -#if ((SIN_LBITS + SIN_HBITS - (21 - 7)) < 0) - x /= (double) (1 << ((21 - 7) - SIN_LBITS - SIN_HBITS)); -#else - x *= (double) (1 << (SIN_LBITS + SIN_HBITS - (21 - 7))); -#endif - - x /= 2.0; // because MUL = value * 2 - - FINC_TAB[i] = (unsigned int) x; - } - - // Tableaux Attack & Decay Rate - - for(i = 0; i < 4; i++) - { - AR_TAB[i] = 0; - DR_TAB[i] = 0; - } - - for(i = 0; i < 60; i++) - { - x = YM2612.Frequence; - - x *= 1.0 + ((i & 3) * 0.25); // bits 0-1 : x1.00, x1.25, x1.50, x1.75 - x *= (double) (1 << ((i >> 2))); // bits 2-5 : shift bits (x2^0 - x2^15) - x *= (double) (ENV_LENGHT << ENV_LBITS); // on ajuste pour le tableau ENV_TAB - - AR_TAB[i + 4] = (unsigned int) (x / AR_RATE); - DR_TAB[i + 4] = (unsigned int) (x / DR_RATE); - } - - for(i = 64; i < 96; i++) - { - AR_TAB[i] = AR_TAB[63]; - DR_TAB[i] = DR_TAB[63]; - - NULL_RATE[i - 64] = 0; - } - - // Tableau Detune - - for(i = 0; i < 4; i++) - { - for (j = 0; j < 32; j++) - { -#if ((SIN_LBITS + SIN_HBITS - 21) < 0) - x = (double) DT_DEF_TAB[(i << 5) + j] * YM2612.Frequence / (double) (1 << (21 - SIN_LBITS - SIN_HBITS)); -#else - x = (double) DT_DEF_TAB[(i << 5) + j] * YM2612.Frequence * (double) (1 << (SIN_LBITS + SIN_HBITS - 21)); -#endif - - DT_TAB[i + 0][j] = (int) x; - DT_TAB[i + 4][j] = (int) -x; - } - } - - // Tableau LFO - - j = (YM2612.Rate * YM2612.Inter_Step) / 0x4000; - - LFO_INC_TAB[0] = (unsigned int) (3.98 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[1] = (unsigned int) (5.56 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[2] = (unsigned int) (6.02 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[3] = (unsigned int) (6.37 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[4] = (unsigned int) (6.88 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[5] = (unsigned int) (9.63 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[6] = (unsigned int) (48.1 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - LFO_INC_TAB[7] = (unsigned int) (72.2 * (double) (1 << (LFO_HBITS + LFO_LBITS)) / j); - - YM2612_Reset(); - - return 0; -} - -int YM2612_Reset(void) -{ - int i, j; - - YM2612.LFOcnt = 0; - YM2612.TimerA = 0; - YM2612.TimerAL = 0; - YM2612.TimerAcnt = 0; - YM2612.TimerB = 0; - YM2612.TimerBL = 0; - YM2612.TimerBcnt = 0; - YM2612.DAC = 0; - YM2612.DACdata = 0; - dac_highpass = 0; - - YM2612.Status = 0; - - YM2612.OPNAadr = 0; - YM2612.OPNBadr = 0; - YM2612.Inter_Cnt = 0; - - for(i = 0; i < 6; i++) - { - YM2612.CHANNEL[i].Old_OUTd = 0; - YM2612.CHANNEL[i].OUTd = 0; - YM2612.CHANNEL[i].LEFT = 0xFFFFFFFF; - YM2612.CHANNEL[i].RIGHT = 0xFFFFFFFF; - YM2612.CHANNEL[i].ALGO = 0;; - YM2612.CHANNEL[i].FB = 31; - YM2612.CHANNEL[i].FMS = 0; - YM2612.CHANNEL[i].AMS = 0; - - for(j = 0 ;j < 4 ; j++) - { - YM2612.CHANNEL[i].S0_OUT[j] = 0; - YM2612.CHANNEL[i].FNUM[j] = 0; - YM2612.CHANNEL[i].FOCT[j] = 0; - YM2612.CHANNEL[i].KC[j] = 0; - - YM2612.CHANNEL[i].SLOT[j].Fcnt = 0; - YM2612.CHANNEL[i].SLOT[j].Finc = 0; - YM2612.CHANNEL[i].SLOT[j].Ecnt = ENV_END; // Put it at the end of Decay phase... - YM2612.CHANNEL[i].SLOT[j].Einc = 0; - YM2612.CHANNEL[i].SLOT[j].Ecmp = 0; - YM2612.CHANNEL[i].SLOT[j].Ecurp = RELEASE; - - YM2612.CHANNEL[i].SLOT[j].ChgEnM = 0; - } - } - - for(i = 0; i < 0x100; i++) - { - YM2612.REG[0][i] = -1; - YM2612.REG[1][i] = -1; - } - - for(i = 0xB6; i >= 0xB4; i--) - { - YM2612_Write(0, (unsigned char) i); - YM2612_Write(2, (unsigned char) i); - YM2612_Write(1, 0xC0); - YM2612_Write(3, 0xC0); - } - - for(i = 0xB2; i >= 0x22; i--) - { - YM2612_Write(0, (unsigned char) i); - YM2612_Write(2, (unsigned char) i); - YM2612_Write(1, 0); - YM2612_Write(3, 0); - } - - YM2612_Write(0, 0x2A); - YM2612_Write(1, 0x80); - -#if YM_DEBUG_LEVEL > 0 - fprintf(debug_file, "\n\nFinishing reseting YM2612 ...\n\n"); -#endif - - return 0; -} - - -int YM2612_Read(void) -{ -/* static int cnt = 0; - - if (cnt++ == 50) - { - cnt = 0; - return YM2612.Status; - } - else return YM2612.Status | 0x80; -*/ - return YM2612.Status; -} - - -int YM2612_Write(unsigned char adr, unsigned char data) -{ - int d; - - //data &= 0xFF; - adr &= 0x03; - - switch(adr) - { - case 0: - YM2612.OPNAadr = data; - break; - - case 1: - // Trivial optimisation - if (YM2612.OPNAadr == 0x2A) - { - YM2612.DACdata = ((int) data - 0x80) << 7; - YM2612.REG[0][0x2A] = data; - return 0; - } - - d = YM2612.OPNAadr & 0xF0; - - if (d >= 0x30) - { - if (YM2612.REG[0][YM2612.OPNAadr] == data) return 2; - YM2612.REG[0][YM2612.OPNAadr] = data; - - if (d < 0xA0) // SLOT - { - SLOT_SET(YM2612.OPNAadr, data); - } - else // CHANNEL - { - CHANNEL_SET(YM2612.OPNAadr, data); - } - } - else // YM2612 - { - YM2612.REG[0][YM2612.OPNAadr] = data; - YM_SET(YM2612.OPNAadr, data); - } - break; - - case 2: - YM2612.OPNBadr = data; - break; - - case 3: - d = YM2612.OPNBadr & 0xF0; - - if (d >= 0x30) - { - if (YM2612.REG[1][YM2612.OPNBadr] == data) return 2; - YM2612.REG[1][YM2612.OPNBadr] = data; - - if (d < 0xA0) // SLOT - { - SLOT_SET(YM2612.OPNBadr + 0x100, data); - } - else // CHANNEL - { - CHANNEL_SET(YM2612.OPNBadr + 0x100, data); - } - } - else return 1; - break; - } - - return 0; -} - - -void YM2612_Update(int **buf, int length) -{ - int i, j, algo_type; - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nStarting generating sound...\n\n"); -#endif - - // Mise à jour des pas des compteurs-fréquences s'ils ont été modifiés - - if (YM2612.CHANNEL[0].SLOT[0].Finc == -1) CALC_FINC_CH(&YM2612.CHANNEL[0]); - if (YM2612.CHANNEL[1].SLOT[0].Finc == -1) CALC_FINC_CH(&YM2612.CHANNEL[1]); - if (YM2612.CHANNEL[2].SLOT[0].Finc == -1) - { - /*---------------------- - |Mode| Behaviour | - |----|---------------| - | 00 | Normal | - | 01 | Special | - | 10 | Special + CSM | - | 11 | Special | - ---------------------- */ - if (YM2612.Mode & 0xC0) - { - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[S0]), FINC_TAB[YM2612.CHANNEL[2].FNUM[2]] >> (7 - YM2612.CHANNEL[2].FOCT[2]), YM2612.CHANNEL[2].KC[2]); - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[S1]), FINC_TAB[YM2612.CHANNEL[2].FNUM[3]] >> (7 - YM2612.CHANNEL[2].FOCT[3]), YM2612.CHANNEL[2].KC[3]); - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[S2]), FINC_TAB[YM2612.CHANNEL[2].FNUM[1]] >> (7 - YM2612.CHANNEL[2].FOCT[1]), YM2612.CHANNEL[2].KC[1]); - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[S3]), FINC_TAB[YM2612.CHANNEL[2].FNUM[0]] >> (7 - YM2612.CHANNEL[2].FOCT[0]), YM2612.CHANNEL[2].KC[0]); - } - else - { - CALC_FINC_CH(&YM2612.CHANNEL[2]); - } - } - if (YM2612.CHANNEL[3].SLOT[0].Finc == -1) CALC_FINC_CH(&YM2612.CHANNEL[3]); - if (YM2612.CHANNEL[4].SLOT[0].Finc == -1) CALC_FINC_CH(&YM2612.CHANNEL[4]); - if (YM2612.CHANNEL[5].SLOT[0].Finc == -1) CALC_FINC_CH(&YM2612.CHANNEL[5]); - -/* - CALC_FINC_CH(&YM2612.CHANNEL[0]); - CALC_FINC_CH(&YM2612.CHANNEL[1]); - if (YM2612.Mode & 0x40) - { - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[0]), FINC_TAB[YM2612.CHANNEL[2].FNUM[2]] >> (7 - YM2612.CHANNEL[2].FOCT[2]), YM2612.CHANNEL[2].KC[2]); - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[1]), FINC_TAB[YM2612.CHANNEL[2].FNUM[3]] >> (7 - YM2612.CHANNEL[2].FOCT[3]), YM2612.CHANNEL[2].KC[3]); - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[2]), FINC_TAB[YM2612.CHANNEL[2].FNUM[1]] >> (7 - YM2612.CHANNEL[2].FOCT[1]), YM2612.CHANNEL[2].KC[1]); - CALC_FINC_SL(&(YM2612.CHANNEL[2].SLOT[3]), FINC_TAB[YM2612.CHANNEL[2].FNUM[0]] >> (7 - YM2612.CHANNEL[2].FOCT[0]), YM2612.CHANNEL[2].KC[0]); - } - else - { - CALC_FINC_CH(&YM2612.CHANNEL[2]); - } - CALC_FINC_CH(&YM2612.CHANNEL[3]); - CALC_FINC_CH(&YM2612.CHANNEL[4]); - CALC_FINC_CH(&YM2612.CHANNEL[5]); -*/ - - if (YM2612.Inter_Step & 0x04000) algo_type = 0; - else algo_type = 16; - - if (YM2612.LFOinc) - { - // Precalcul LFO wav - - for(i = 0; i < length; i++) - { - j = ((YM2612.LFOcnt += YM2612.LFOinc) >> LFO_LBITS) & LFO_MASK; - - LFO_ENV_UP[i] = LFO_ENV_TAB[j]; - LFO_FREQ_UP[i] = LFO_FREQ_TAB[j]; - -#if YM_DEBUG_LEVEL > 3 - fprintf(debug_file, "LFO_ENV_UP[%d] = %d LFO_FREQ_UP[%d] = %d\n", i, LFO_ENV_UP[i], i, LFO_FREQ_UP[i]); -#endif - } - - algo_type |= 8; - } - - UPDATE_CHAN[YM2612.CHANNEL[0].ALGO + algo_type](&(YM2612.CHANNEL[0]), buf, length); - UPDATE_CHAN[YM2612.CHANNEL[1].ALGO + algo_type](&(YM2612.CHANNEL[1]), buf, length); - UPDATE_CHAN[YM2612.CHANNEL[2].ALGO + algo_type](&(YM2612.CHANNEL[2]), buf, length); - UPDATE_CHAN[YM2612.CHANNEL[3].ALGO + algo_type](&(YM2612.CHANNEL[3]), buf, length); - UPDATE_CHAN[YM2612.CHANNEL[4].ALGO + algo_type](&(YM2612.CHANNEL[4]), buf, length); - if (!(YM2612.DAC)) UPDATE_CHAN[YM2612.CHANNEL[5].ALGO + algo_type](&(YM2612.CHANNEL[5]), buf, length); - else - { - for(i = 0; i < length; i++) - { - buf[0][i] += YM2612.DACdata & YM2612.CHANNEL[5].LEFT; - buf[1][i] += YM2612.DACdata & YM2612.CHANNEL[5].RIGHT; - } - } - - YM2612.Inter_Cnt = int_cnt; - - /* update timers here */ - YM2612_Timers_Update(length); - -#if YM_DEBUG_LEVEL > 1 - fprintf(debug_file, "\n\nFinishing generating sound...\n\n"); -#endif - -} - -void YM2612_Timers_Update(int length) -{ - int i; - - i = YM2612.TimerBase * length; - - if (YM2612.Mode & 1) // Timer A ON ? - { - if ((YM2612.TimerAcnt -= i) <= 0) - { - YM2612.Status |= (YM2612.Mode & 0x04) >> 2; - YM2612.TimerAcnt += YM2612.TimerAL; - /*---------------------- - |Mode| Behaviour | - |----|---------------| - | 00 | Normal | - | 01 | Special | - | 10 | Special + CSM | - | 11 | Special | - ---------------------- */ - if ((YM2612.Mode & 0xC0) == 0x80) CSM_Key_Control(); // found by Nemesis - } - } - - if (YM2612.Mode & 2) // Timer B ON ? - { - if ((YM2612.TimerBcnt -= i) <= 0) - { - YM2612.Status |= (YM2612.Mode & 0x08) >> 2; - YM2612.TimerBcnt += YM2612.TimerBL; - } - } -} - -void YM2612_Special_Update () -{} diff --git a/source/sound/ym2612.h b/source/sound/ym2612.h deleted file mode 100644 index 2936433..0000000 --- a/source/sound/ym2612.h +++ /dev/null @@ -1,113 +0,0 @@ -/*********************************************************** - * * - * YM2612.C : YM2612 emulator * - * * - * Almost constantes are taken from the MAME core * - * * - * This source is a part of Gens project * - * Written by Stéphane Dallongeville (gens@consolemul.com) * - * Copyright (c) 2002 by Stéphane Dallongeville * - * * - ***********************************************************/ - -#ifndef _YM2612_H_ -#define _YM2612_H_ - -// Change it if you need to do long update -#define MAX_UPDATE_LENGHT 2000 - -// Gens always uses 16 bits sound (in 32 bits buffer) and do the convertion later if needed. -#define OUTPUT_BITS 16 - -typedef struct slot__ { - int *DT; // paramètre detune - int MUL; // paramètre "multiple de fréquence" - int TL; // Total Level = volume lorsque l'enveloppe est au plus haut - int TLL; // Total Level ajusted - int SLL; // Sustin Level (ajusted) = volume où l'enveloppe termine sa première phase de régression - int KSR_S; // Key Scale Rate Shift = facteur de prise en compte du KSL dans la variations de l'enveloppe - int KSR; // Key Scale Rate = cette valeur est calculée par rapport à la fréquence actuelle, elle va influer - // sur les différents paramètres de l'enveloppe comme l'attaque, le decay ... comme dans la réalité ! - int SEG; // Type enveloppe SSG - int *AR; // Attack Rate (table pointeur) = Taux d'attaque (AR[KSR]) - int *DR; // Decay Rate (table pointeur) = Taux pour la régression (DR[KSR]) - int *SR; // Sustin Rate (table pointeur) = Taux pour le maintien (SR[KSR]) - int *RR; // Release Rate (table pointeur) = Taux pour le relâchement (RR[KSR]) - int Fcnt; // Frequency Count = compteur-fréquence pour déterminer l'amplitude actuelle (SIN[Finc >> 16]) - int Finc; // frequency step = pas d'incrémentation du compteur-fréquence - // plus le pas est grand, plus la fréquence est aïgu (ou haute) - int Ecurp; // Envelope current phase = cette variable permet de savoir dans quelle phase - // de l'enveloppe on se trouve, par exemple phase d'attaque ou phase de maintenue ... - // en fonction de la valeur de cette variable, on va appeler une fonction permettant - // de mettre à jour l'enveloppe courante. - int Ecnt; // Envelope counter = le compteur-enveloppe permet de savoir où l'on se trouve dans l'enveloppe - int Einc; // Envelope step courant - int Ecmp; // Envelope counter limite pour la prochaine phase - int EincA; // Envelope step for Attack = pas d'incrémentation du compteur durant la phase d'attaque - // cette valeur est égal à AR[KSR] - int EincD; // Envelope step for Decay = pas d'incrémentation du compteur durant la phase de regression - // cette valeur est égal à DR[KSR] - int EincS; // Envelope step for Sustain = pas d'incrémentation du compteur durant la phase de maintenue - // cette valeur est égal à SR[KSR] - int EincR; // Envelope step for Release = pas d'incrémentation du compteur durant la phase de relâchement - // cette valeur est égal à RR[KSR] - int *OUTp; // pointeur of SLOT output = pointeur permettant de connecter la sortie de ce slot à l'entrée - // d'un autre ou carrement à la sortie de la voie - int INd; // input data of the slot = données en entrée du slot - int ChgEnM; // Change envelop mask. - int AMS; // AMS depth level of this SLOT = degré de modulation de l'amplitude par le LFO - int AMSon; // AMS enable flag = drapeau d'activation de l'AMS -} slot_; - -typedef struct channel__ { - int S0_OUT[4]; // anciennes sorties slot 0 (pour le feed back) - int Old_OUTd; // ancienne sortie de la voie (son brut) - int OUTd; // sortie de la voie (son brut) - int LEFT; // LEFT enable flag - int RIGHT; // RIGHT enable flag - int ALGO; // Algorythm = détermine les connections entre les opérateurs - int FB; // shift count of self feed back = degré de "Feed-Back" du SLOT 1 (il est son unique entrée) - int FMS; // Fréquency Modulation Sensitivity of channel = degré de modulation de la fréquence sur la voie par le LFO - int AMS; // Amplitude Modulation Sensitivity of channel = degré de modulation de l'amplitude sur la voie par le LFO - int FNUM[4]; // hauteur fréquence de la voie (+ 3 pour le mode spécial) - int FOCT[4]; // octave de la voie (+ 3 pour le mode spécial) - int KC[4]; // Key Code = valeur fonction de la fréquence (voir KSR pour les slots, KSR = KC >> KSR_S) - struct slot__ SLOT[4]; // four slot.operators = les 4 slots de la voie - int FFlag; // Frequency step recalculation flag -} channel_; - -typedef struct ym2612__ { - int Clock; // Horloge YM2612 - int Rate; // Sample Rate (11025/22050/44100) - int TimerBase; // TimerBase calculation - int Status; // YM2612 Status (timer overflow) - int OPNAadr; // addresse pour l'écriture dans l'OPN A (propre à l'émulateur) - int OPNBadr; // addresse pour l'écriture dans l'OPN B (propre à l'émulateur) - int LFOcnt; // LFO counter = compteur-fréquence pour le LFO - int LFOinc; // LFO step counter = pas d'incrémentation du compteur-fréquence du LFO - // plus le pas est grand, plus la fréquence est grande - int TimerA; // timerA limit = valeur jusqu'à laquelle le timer A doit compter - int TimerAL; - int TimerAcnt; // timerA counter = valeur courante du Timer A - int TimerB; // timerB limit = valeur jusqu'à laquelle le timer B doit compter - int TimerBL; - int TimerBcnt; // timerB counter = valeur courante du Timer B - int Mode; // Mode actuel des voie 3 et 6 (normal / spécial) - int DAC; // DAC enabled flag - int DACdata; // DAC data - double Frequence; // Fréquence de base, se calcul par rapport à l'horlage et au sample rate - unsigned int Inter_Cnt; // Interpolation Counter - unsigned int Inter_Step; // Interpolation Step - struct channel__ CHANNEL[6]; // Les 6 voies du YM2612 - int REG[2][0x100]; // Sauvegardes des valeurs de tout les registres, c'est facultatif - // cela nous rend le débuggage plus facile -} ym2612_; - - -extern int YM2612_Init(int clock, int rate, int interpolation); -extern int YM2612_Reset(void); -extern int YM2612_Read(void); -extern int YM2612_Write(unsigned char adr, unsigned char data); -extern void YM2612_Update(int **buf, int length); - -#endif