mirror of
https://github.com/libretro/scummvm.git
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1086 lines
24 KiB
C++
1086 lines
24 KiB
C++
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/* ScummVM - Scumm Interpreter
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* Copyright (C) 2001 Ludvig Strigeus
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* Copyright (C) 2001-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* aint32 with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#include "common/stdafx.h"
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#include "base/engine.h"
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#include "scumm/player_nes.h"
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#include "scumm/scumm.h"
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#include "sound/mixer.h"
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namespace Scumm {
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static const byte channelMask[4] = {1, 2, 4, 8};
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static const uint16 freqTable[64] = {
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0x07F0, 0x077E, 0x0712, 0x06AE, 0x064E, 0x05F3, 0x059E, 0x054D,
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0x0501, 0x04B9, 0x0475, 0x0435, 0x03F8, 0x03BF, 0x0389, 0x0357,
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0x0327, 0x02F9, 0x02CF, 0x02A6, 0x0280, 0x025C, 0x023A, 0x021A,
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0x01FC, 0x01DF, 0x01C4, 0x01AB, 0x0193, 0x017C, 0x0167, 0x0152,
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0x013F, 0x012D, 0x011C, 0x010C, 0x00FD, 0x00EE, 0x00E1, 0x00D4,
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0x00C8, 0x00BD, 0x00B2, 0x00A8, 0x009F, 0x0096, 0x008D, 0x0085,
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0x007E, 0x0076, 0x0070, 0x0069, 0x0063, 0x005E, 0x0058, 0x0053,
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0x004F, 0x004A, 0x0046, 0x0042, 0x003E, 0x003A, 0x0037, 0x0034
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};
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static const byte instChannel[16] = {
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0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 2, 2, 1, 3, 3, 3
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};
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static const byte startCmd[16] = {
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0x05, 0x03, 0x06, 0x08, 0x0B, 0x01, 0x01, 0x1A,
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0x16, 0x06, 0x04, 0x17, 0x02, 0x10, 0x0E, 0x0D
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};
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static const byte releaseCmd[16] = {
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0x0F, 0x00, 0x00, 0x09, 0x00, 0x14, 0x15, 0x00,
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0x00, 0x00, 0x1B, 0x1B, 0x0F, 0x0F, 0x0F, 0x0F
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};
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static const byte nextCmd[28] = {
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0xFF, 0xFF, 0xFF, 0xFF, 0x17, 0xFF, 0x07, 0xFF,
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0xFF, 0x0A, 0x09, 0x0C, 0x00, 0x00, 0x00, 0x00,
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0x11, 0x12, 0x11, 0x03, 0xFF, 0xFF, 0x18, 0x00,
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0x19, 0x00, 0x00, 0x00
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};
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static const byte nextDelay[28] = {
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0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x03, 0x00,
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0x00, 0x05, 0x08, 0x03, 0x00, 0x00, 0x00, 0x00,
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0x02, 0x02, 0x02, 0x00, 0x00, 0x00, 0x03, 0x00,
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0x03, 0x00, 0x00, 0x00
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};
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namespace APUe {
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struct tAPU {
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int Cycles;
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int BufPos;
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int SampleRate;
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} APU;
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const byte LengthCounts[32] = {
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0x0A,0xFE,
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0x14,0x02,
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0x28,0x04,
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0x50,0x06,
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0xA0,0x08,
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0x3C,0x0A,
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0x0E,0x0C,
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0x1A,0x0E,
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0x0C,0x10,
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0x18,0x12,
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0x30,0x14,
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0x60,0x16,
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0xC0,0x18,
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0x48,0x1A,
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0x10,0x1C,
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0x20,0x1E
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};
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static struct {
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byte volume, envelope, wavehold, duty, swpspeed, swpdir, swpstep, swpenab;
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uint32 freq; // short
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byte Vol;
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byte CurD;
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byte Timer;
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byte EnvCtr, Envelope, BendCtr;
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bool Enabled, ValidFreq, Active;
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bool EnvClk, SwpClk;
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uint32 Cycles; // short
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int32 Pos;
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} Square0, Square1;
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const int8 Duties[4][8] = {
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{-4,+4,-4,-4,-4,-4,-4,-4},
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{-4,+4,+4,-4,-4,-4,-4,-4},
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{-4,+4,+4,+4,+4,-4,-4,-4},
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{+4,-4,-4,+4,+4,+4,+4,+4}
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};
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inline void Square0_CheckActive(void) {
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Square0.ValidFreq = (Square0.freq >= 0x8) && ((Square0.swpdir) || !((Square0.freq + (Square0.freq >> Square0.swpstep)) & 0x800));
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Square0.Active = Square0.Timer && Square0.ValidFreq;
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Square0.Pos = Square0.Active ? (Duties[Square0.duty][Square0.CurD] * Square0.Vol) : 0;
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}
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inline void Square0_Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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Square0.volume = Val & 0xF;
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Square0.envelope = Val & 0x10;
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Square0.wavehold = Val & 0x20;
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Square0.duty = (Val >> 6) & 0x3;
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Square0.Vol = Square0.envelope ? Square0.volume : Square0.Envelope;
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break;
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case 1:
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Square0.swpstep = Val & 0x07;
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Square0.swpdir = Val & 0x08;
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Square0.swpspeed = (Val >> 4) & 0x7;
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Square0.swpenab = Val & 0x80;
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Square0.SwpClk = true;
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break;
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case 2:
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Square0.freq &= 0x700;
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Square0.freq |= Val;
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break;
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case 3:
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Square0.freq &= 0xFF;
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Square0.freq |= (Val & 0x7) << 8;
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if (Square0.Enabled)
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Square0.Timer = LengthCounts[(Val >> 3) & 0x1F];
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Square0.CurD = 0;
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Square0.EnvClk = true;
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break;
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case 4:
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if (!(Square0.Enabled = Val ? true : false))
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Square0.Timer = 0;
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break;
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}
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Square0_CheckActive();
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}
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inline void Square0_Run(void) {
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if (!--Square0.Cycles) {
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Square0.Cycles = (Square0.freq + 1) << 1;
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Square0.CurD = (Square0.CurD + 1) & 0x7;
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if (Square0.Active)
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Square0.Pos = Duties[Square0.duty][Square0.CurD] * Square0.Vol;
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}
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}
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inline void Square0_QuarterFrame(void) {
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if (Square0.EnvClk) {
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Square0.EnvClk = false;
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Square0.Envelope = 0xF;
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Square0.EnvCtr = Square0.volume + 1;
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} else if (!--Square0.EnvCtr) {
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Square0.EnvCtr = Square0.volume + 1;
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if (Square0.Envelope)
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Square0.Envelope--;
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else
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Square0.Envelope = Square0.wavehold ? 0xF : 0x0;
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}
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Square0.Vol = Square0.envelope ? Square0.volume : Square0.Envelope;
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Square0_CheckActive();
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}
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inline void Square0_HalfFrame(void) {
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if (!--Square0.BendCtr) {
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Square0.BendCtr = Square0.swpspeed + 1;
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if (Square0.swpenab && Square0.swpstep && Square0.ValidFreq) {
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int sweep = Square0.freq >> Square0.swpstep;
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Square0.freq += Square0.swpdir ? ~sweep : sweep;
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}
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}
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if (Square0.SwpClk) {
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Square0.SwpClk = false;
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Square0.BendCtr = Square0.swpspeed + 1;
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}
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if (Square0.Timer && !Square0.wavehold)
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Square0.Timer--;
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Square0_CheckActive();
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}
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inline void Square1_CheckActive(void) {
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Square1.ValidFreq = (Square1.freq >= 0x8) && ((Square1.swpdir) || !((Square1.freq + (Square1.freq >> Square1.swpstep)) & 0x800));
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Square1.Active = Square1.Timer && Square1.ValidFreq;
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Square1.Pos = Square1.Active ? (Duties[Square1.duty][Square1.CurD] * Square1.Vol) : 0;
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}
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inline void Square1_Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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Square1.volume = Val & 0xF;
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Square1.envelope = Val & 0x10;
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Square1.wavehold = Val & 0x20;
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Square1.duty = (Val >> 6) & 0x3;
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Square1.Vol = Square1.envelope ? Square1.volume : Square1.Envelope;
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break;
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case 1:
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Square1.swpstep = Val & 0x07;
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Square1.swpdir = Val & 0x08;
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Square1.swpspeed = (Val >> 4) & 0x7;
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Square1.swpenab = Val & 0x80;
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Square1.SwpClk = true;
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break;
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case 2:
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Square1.freq &= 0x700;
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Square1.freq |= Val;
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break;
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case 3:
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Square1.freq &= 0xFF;
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Square1.freq |= (Val & 0x7) << 8;
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if (Square1.Enabled)
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Square1.Timer = LengthCounts[(Val >> 3) & 0x1F];
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Square1.CurD = 0;
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Square1.EnvClk = true;
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break;
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case 4:
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if (!(Square1.Enabled = Val ? true : false))
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Square1.Timer = 0;
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break;
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}
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Square1_CheckActive();
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}
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inline void Square1_Run(void) {
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if (!--Square1.Cycles) {
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Square1.Cycles = (Square1.freq + 1) << 1;
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Square1.CurD = (Square1.CurD + 1) & 0x7;
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if (Square1.Active)
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Square1.Pos = Duties[Square1.duty][Square1.CurD] * Square1.Vol;
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}
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}
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inline void Square1_QuarterFrame(void) {
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if (Square1.EnvClk) {
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Square1.EnvClk = false;
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Square1.Envelope = 0xF;
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Square1.EnvCtr = Square1.volume + 1;
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} else if (!--Square1.EnvCtr) {
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Square1.EnvCtr = Square1.volume + 1;
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if (Square1.Envelope)
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Square1.Envelope--;
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else
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Square1.Envelope = Square1.wavehold ? 0xF : 0x0;
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}
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Square1.Vol = Square1.envelope ? Square1.volume : Square1.Envelope;
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Square1_CheckActive();
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}
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inline void Square1_HalfFrame(void) {
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if (!--Square1.BendCtr) {
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Square1.BendCtr = Square1.swpspeed + 1;
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if (Square1.swpenab && Square1.swpstep && Square1.ValidFreq) {
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int sweep = Square1.freq >> Square1.swpstep;
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Square1.freq += Square1.swpdir ? -sweep : sweep;
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}
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}
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if (Square1.SwpClk) {
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Square1.SwpClk = false;
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Square1.BendCtr = Square1.swpspeed + 1;
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}
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if (Square1.Timer && !Square1.wavehold)
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Square1.Timer--;
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Square1_CheckActive();
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}
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static struct {
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byte linear, wavehold;
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uint32 freq; // short
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byte CurD;
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byte Timer, LinCtr;
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bool Enabled, Active;
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bool LinClk;
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uint32 Cycles; // short
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int32 Pos;
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} Triangle;
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const int8 TriDuty[32] = {
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-8,-7,-6,-5,-4,-3,-2,-1,
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+0,+1,+2,+3,+4,+5,+6,+7,
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+7,+6,+5,+4,+3,+2,+1,+0,
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-1,-2,-3,-4,-5,-6,-7,-8
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};
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inline void Triangle_CheckActive(void) {
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Triangle.Active = Triangle.Timer && Triangle.LinCtr;
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if (Triangle.freq < 4)
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Triangle.Pos = 0; // beyond hearing range
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else
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Triangle.Pos = TriDuty[Triangle.CurD] * 8;
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}
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inline void Triangle_Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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Triangle.linear = Val & 0x7F;
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Triangle.wavehold = (Val >> 7) & 0x1;
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break;
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case 2:
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Triangle.freq &= 0x700;
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Triangle.freq |= Val;
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break;
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case 3:
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Triangle.freq &= 0xFF;
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Triangle.freq |= (Val & 0x7) << 8;
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if (Triangle.Enabled)
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Triangle.Timer = LengthCounts[(Val >> 3) & 0x1F];
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Triangle.LinClk = true;
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break;
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case 4:
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if (!(Triangle.Enabled = Val ? true : false))
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Triangle.Timer = 0;
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break;
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}
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Triangle_CheckActive();
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}
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inline void Triangle_Run(void) {
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if (!--Triangle.Cycles) {
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Triangle.Cycles = Triangle.freq + 1;
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if (Triangle.Active) {
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Triangle.CurD++;
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Triangle.CurD &= 0x1F;
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if (Triangle.freq < 4)
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Triangle.Pos = 0; // beyond hearing range
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else
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Triangle.Pos = TriDuty[Triangle.CurD] * 8;
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}
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}
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}
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inline void Triangle_QuarterFrame(void) {
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if (Triangle.LinClk)
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Triangle.LinCtr = Triangle.linear;
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else if (Triangle.LinCtr)
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Triangle.LinCtr--;
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if (!Triangle.wavehold)
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Triangle.LinClk = false;
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Triangle_CheckActive();
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}
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inline void Triangle_HalfFrame(void) {
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if (Triangle.Timer && !Triangle.wavehold)
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Triangle.Timer--;
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Triangle_CheckActive();
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}
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static struct {
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byte volume, envelope, wavehold, datatype;
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uint32 freq; // short
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uint32 CurD; // short
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byte Vol;
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byte Timer;
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byte EnvCtr, Envelope;
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bool Enabled;
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bool EnvClk;
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uint32 Cycles; // short
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int32 Pos;
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} Noise;
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const uint32 NoiseFreq[16] = {
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0x004,0x008,0x010,0x020,0x040,0x060,0x080,0x0A0,
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0x0CA,0x0FE,0x17C,0x1FC,0x2FA,0x3F8,0x7F2,0xFE4
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};
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inline void Noise_Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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Noise.volume = Val & 0x0F;
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Noise.envelope = Val & 0x10;
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Noise.wavehold = Val & 0x20;
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Noise.Vol = Noise.envelope ? Noise.volume : Noise.Envelope;
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if (Noise.Timer)
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Noise.Pos = ((Noise.CurD & 0x4000) ? -2 : 2) * Noise.Vol;
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break;
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case 2:
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Noise.freq = Val & 0xF;
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Noise.datatype = Val & 0x80;
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break;
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case 3:
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if (Noise.Enabled)
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Noise.Timer = LengthCounts[(Val >> 3) & 0x1F];
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Noise.EnvClk = true;
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break;
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case 4:
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if (!(Noise.Enabled = Val ? true : false))
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Noise.Timer = 0;
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break;
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}
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}
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inline void Noise_Run(void) {
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if (!--Noise.Cycles) {
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Noise.Cycles = NoiseFreq[Noise.freq]; /* no + 1 here */
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if (Noise.datatype)
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Noise.CurD = (Noise.CurD << 1) | (((Noise.CurD >> 14) ^ (Noise.CurD >> 8)) & 0x1);
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else
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Noise.CurD = (Noise.CurD << 1) | (((Noise.CurD >> 14) ^ (Noise.CurD >> 13)) & 0x1);
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if (Noise.Timer)
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Noise.Pos = ((Noise.CurD & 0x4000) ? -2 : 2) * Noise.Vol;
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}
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}
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inline void Noise_QuarterFrame(void) {
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if (Noise.EnvClk) {
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Noise.EnvClk = false;
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Noise.Envelope = 0xF;
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Noise.EnvCtr = Noise.volume + 1;
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} else if (!--Noise.EnvCtr) {
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Noise.EnvCtr = Noise.volume + 1;
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if (Noise.Envelope)
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Noise.Envelope--;
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else
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Noise.Envelope = Noise.wavehold ? 0xF : 0x0;
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}
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Noise.Vol = Noise.envelope ? Noise.volume : Noise.Envelope;
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if (Noise.Timer)
|
|
Noise.Pos = ((Noise.CurD & 0x4000) ? -2 : 2) * Noise.Vol;
|
|
}
|
|
|
|
inline void Noise_HalfFrame(void) {
|
|
if (Noise.Timer && !Noise.wavehold)
|
|
Noise.Timer--;
|
|
}
|
|
|
|
static struct {
|
|
uint32 Cycles;
|
|
int Num;
|
|
} Frame;
|
|
|
|
inline void Frame_Run(void) {
|
|
if (!--Frame.Cycles) {
|
|
Frame.Cycles = 7457;
|
|
|
|
if (Frame.Num < 4) {
|
|
Square0_QuarterFrame();
|
|
Square1_QuarterFrame();
|
|
Triangle_QuarterFrame();
|
|
Noise_QuarterFrame();
|
|
|
|
if (!(Frame.Num & 1)) {
|
|
Square0_HalfFrame();
|
|
Square1_HalfFrame();
|
|
Triangle_HalfFrame();
|
|
Noise_HalfFrame();
|
|
}
|
|
}
|
|
|
|
if (Frame.Num & 1)
|
|
Frame.Cycles++;
|
|
|
|
Frame.Num++;
|
|
|
|
if (Frame.Num == 5)
|
|
Frame.Num = 0;
|
|
}
|
|
}
|
|
|
|
void APU_WriteReg(int Addr, byte Val) {
|
|
switch (Addr) {
|
|
case 0x000: Square0_Write(0,Val); break;
|
|
case 0x001: Square0_Write(1,Val); break;
|
|
case 0x002: Square0_Write(2,Val); break;
|
|
case 0x003: Square0_Write(3,Val); break;
|
|
case 0x004: Square1_Write(0,Val); break;
|
|
case 0x005: Square1_Write(1,Val); break;
|
|
case 0x006: Square1_Write(2,Val); break;
|
|
case 0x007: Square1_Write(3,Val); break;
|
|
case 0x008: Triangle_Write(0,Val); break;
|
|
case 0x009: Triangle_Write(1,Val); break;
|
|
case 0x00A: Triangle_Write(2,Val); break;
|
|
case 0x00B: Triangle_Write(3,Val); break;
|
|
case 0x00C: Noise_Write(0,Val); break;
|
|
case 0x00D: Noise_Write(1,Val); break;
|
|
case 0x00E: Noise_Write(2,Val); break;
|
|
case 0x00F: Noise_Write(3,Val); break;
|
|
case 0x015: Square0_Write(4,Val & 0x1);
|
|
Square1_Write(4,Val & 0x2);
|
|
Triangle_Write(4,Val & 0x4);
|
|
Noise_Write(4,Val & 0x8);
|
|
break;
|
|
}
|
|
}
|
|
|
|
byte APU_Read4015(void) {
|
|
byte result =
|
|
(( Square0.Timer) ? 0x01 : 0) |
|
|
(( Square1.Timer) ? 0x02 : 0) |
|
|
((Triangle.Timer) ? 0x04 : 0) |
|
|
(( Noise.Timer) ? 0x08 : 0);
|
|
return result;
|
|
}
|
|
|
|
void APU_Reset (void) {
|
|
APU.BufPos = 0;
|
|
|
|
memset(&Frame, 0, sizeof(Frame));
|
|
memset(&Square0, 0, sizeof(Square0));
|
|
memset(&Square1, 0, sizeof(Square1));
|
|
memset(&Triangle, 0, sizeof(Triangle));
|
|
memset(&Noise, 0, sizeof(Noise));
|
|
|
|
Noise.CurD = 1;
|
|
APU.Cycles = 1;
|
|
Square0.Cycles = 1;
|
|
Square0.EnvCtr = 1;
|
|
Square0.BendCtr = 1;
|
|
Square1.Cycles = 1;
|
|
Square1.EnvCtr = 1;
|
|
Square1.BendCtr = 1;
|
|
Triangle.Cycles = 1;
|
|
Noise.Cycles = 1;
|
|
Noise.EnvCtr = 1;
|
|
Frame.Cycles = 1;
|
|
}
|
|
|
|
int16 APU_GetSample(void) {
|
|
int sampcycles = 0, samppos = 0;
|
|
int NewBufPos = APU.BufPos;
|
|
while (NewBufPos == APU.BufPos) {
|
|
NewBufPos = APU.SampleRate * ++APU.Cycles / 1789773;
|
|
if (APU.Cycles == 1789773) // we've generated 1 second, so we can reset our counters now
|
|
APU.Cycles = NewBufPos = 0;
|
|
|
|
Frame_Run();
|
|
Square0_Run();
|
|
Square1_Run();
|
|
Triangle_Run();
|
|
Noise_Run();
|
|
|
|
samppos += Square0.Pos + Square1.Pos + Triangle.Pos + Noise.Pos;
|
|
sampcycles++;
|
|
}
|
|
|
|
APU.BufPos = NewBufPos;
|
|
|
|
return (samppos << 6) / sampcycles;
|
|
}
|
|
|
|
}
|
|
|
|
Player_NES::Player_NES(ScummEngine *scumm) {
|
|
int i;
|
|
_vm = scumm;
|
|
_mixer = scumm->_mixer;
|
|
APUe::APU.SampleRate = _sample_rate = _mixer->getOutputRate();
|
|
|
|
_samples_per_frame = _sample_rate / 60;
|
|
_current_sample = 0;
|
|
|
|
for (i = 0; i < NUMSLOTS; i++) {
|
|
_slot[i].id = -1;
|
|
_slot[i].framesleft = 0;
|
|
_slot[i].type = 0;
|
|
_slot[i].offset = 0;
|
|
_slot[i].data = NULL;
|
|
}
|
|
|
|
for (i = 0; i < NUMCHANS; i++) {
|
|
_mchan[i].command = 0;
|
|
_mchan[i].framedelay = 0;
|
|
_mchan[i].pitch = 0;
|
|
_mchan[i].volume = 0;
|
|
_mchan[i].voldelta = 0;
|
|
_mchan[i].envflags = 0;
|
|
_mchan[i].cmdlock = 0;
|
|
}
|
|
isSFXplaying = wasSFXplaying = false;
|
|
|
|
auxData1 = auxData2 = NULL;
|
|
numNotes = 0;
|
|
|
|
APU_writeControl(0);
|
|
|
|
APUe::APU_Reset();
|
|
|
|
_mixer->setupPremix(this);
|
|
}
|
|
|
|
Player_NES::~Player_NES() {
|
|
_mixer->setupPremix(0);
|
|
}
|
|
|
|
void Player_NES::setMusicVolume (int vol) {
|
|
_maxvol = vol;
|
|
}
|
|
|
|
int Player_NES::readBuffer(int16 *buffer, const int numSamples) {
|
|
for (int n = 0; n < numSamples; n++) {
|
|
buffer[n] = APUe::APU_GetSample() * _maxvol / 255;
|
|
_current_sample++;
|
|
|
|
if (_current_sample == _samples_per_frame) {
|
|
_current_sample = 0;
|
|
sound_play();
|
|
}
|
|
}
|
|
return numSamples;
|
|
}
|
|
void Player_NES::stopAllSounds() {
|
|
for (int i = 0; i < NUMSLOTS; i++) {
|
|
_slot[i].framesleft = 0;
|
|
_slot[i].type = 0;
|
|
_slot[i].id = -1;
|
|
}
|
|
|
|
isSFXplaying = 0;
|
|
checkSilenceChannels(0);
|
|
}
|
|
|
|
void Player_NES::stopSound(int nr) {
|
|
if (nr == -1)
|
|
return;
|
|
|
|
for (int i = 0; i < NUMSLOTS; i++) {
|
|
if (_slot[i].id != nr)
|
|
continue;
|
|
|
|
isSFXplaying = 0;
|
|
_slot[i].framesleft = 0;
|
|
_slot[i].type = 0;
|
|
_slot[i].id = -1;
|
|
checkSilenceChannels(i);
|
|
}
|
|
}
|
|
|
|
void Player_NES::startSound(int nr) {
|
|
byte *data = _vm->getResourceAddress(rtSound, nr) + 2;
|
|
assert(data);
|
|
|
|
int soundType = data[1];
|
|
int chan = data[0];
|
|
|
|
if (chan == 4) {
|
|
if (_slot[2].framesleft)
|
|
return;
|
|
chan = 0;
|
|
}
|
|
|
|
if (soundType < _slot[chan].type)
|
|
return;
|
|
|
|
_slot[chan].type = soundType;
|
|
_slot[chan].id = nr;
|
|
_slot[chan].data = data;
|
|
_slot[chan].offset = 2;
|
|
_slot[chan].framesleft = 1;
|
|
checkSilenceChannels(chan);
|
|
if (chan == 2) {
|
|
numNotes = _slot[chan].data[2];
|
|
auxData1 = _slot[chan].data + 3;
|
|
auxData2 = auxData1 + numNotes;
|
|
_slot[chan].data = auxData2 + numNotes;
|
|
_slot[chan].offset = 0;
|
|
|
|
for (int i = 0; i < NUMCHANS; i++)
|
|
_mchan[i].cmdlock = 0;
|
|
}
|
|
}
|
|
|
|
void Player_NES::checkSilenceChannels(int chan) {
|
|
for (chan--; chan >= 0; chan--) {
|
|
if (_slot[chan].framesleft)
|
|
return;
|
|
}
|
|
APU_writeControl(0);
|
|
}
|
|
|
|
void Player_NES::sound_play() {
|
|
if (_slot[0].framesleft)
|
|
playSFX(0);
|
|
else if (_slot[1].framesleft)
|
|
playSFX(1);
|
|
|
|
playMusic();
|
|
}
|
|
|
|
void Player_NES::playSFX (int nr) {
|
|
if (--_slot[nr].framesleft)
|
|
return;
|
|
|
|
while (1) {
|
|
int a = _slot[nr].data[_slot[nr].offset++];
|
|
if (a < 16) {
|
|
a >>= 2;
|
|
APU_writeControl(APU_readStatus() | channelMask[a]);
|
|
isSFXplaying = true;
|
|
APU_writeChannel(a, 0, _slot[nr].data[_slot[nr].offset++]);
|
|
APU_writeChannel(a, 1, _slot[nr].data[_slot[nr].offset++]);
|
|
APU_writeChannel(a, 2, _slot[nr].data[_slot[nr].offset++]);
|
|
APU_writeChannel(a, 3, _slot[nr].data[_slot[nr].offset++]);
|
|
} else if (a == 0xFE) {
|
|
_slot[nr].offset = 2;
|
|
} else if (a == 0xFF) {
|
|
_slot[nr].id = -1;
|
|
_slot[nr].type = 0;
|
|
isSFXplaying = false;
|
|
APU_writeControl(0);
|
|
|
|
if (!nr && _slot[1].framesleft) {
|
|
_slot[1].framesleft = 1;
|
|
isSFXplaying = true;
|
|
}
|
|
return;
|
|
} else {
|
|
_slot[nr].framesleft = _slot[nr].data[_slot[nr].offset++];
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void Player_NES::playMusic() {
|
|
if (!_slot[2].framesleft)
|
|
return;
|
|
|
|
if (wasSFXplaying && !isSFXplaying)
|
|
for (int x = 1; x >= 0; x--)
|
|
if (_mchan[x].cmdlock) {
|
|
_mchan[x].command = _mchan[x].cmdlock;
|
|
_mchan[x].framedelay = 1;
|
|
}
|
|
|
|
wasSFXplaying = isSFXplaying;
|
|
if (!--_slot[2].framesleft) {
|
|
top:
|
|
int b = _slot[2].data[_slot[2].offset++];
|
|
if (b == 0xFF) {
|
|
_slot[2].id = -1;
|
|
_slot[2].type = 0;
|
|
b = 0;
|
|
} else if (b == 0xFE) {
|
|
_slot[2].offset = 0;
|
|
goto top;
|
|
} else {
|
|
if (b < numNotes) {
|
|
int inst = auxData1[b];
|
|
int ch = instChannel[inst];
|
|
_mchan[ch].pitch = auxData2[b];
|
|
_mchan[ch].cmdlock = startCmd[inst];
|
|
_mchan[ch].command = startCmd[inst];
|
|
_mchan[ch].framedelay = 1;
|
|
goto top;
|
|
}
|
|
b -= numNotes;
|
|
if (b < 16) {
|
|
int inst = b;
|
|
int ch = instChannel[inst];
|
|
_mchan[ch].cmdlock = 0;
|
|
_mchan[ch].command = releaseCmd[inst];
|
|
_mchan[ch].framedelay = 1;
|
|
goto top;
|
|
}
|
|
b -= 16;
|
|
}
|
|
_slot[2].framesleft = b;
|
|
}
|
|
|
|
for (int x = NUMCHANS - 1; x >= 0; x--) {
|
|
if (_slot[0].framesleft || _slot[1].framesleft) {
|
|
_mchan[x].volume = 0;
|
|
_mchan[x].framedelay = 0;
|
|
continue;
|
|
}
|
|
|
|
if (_mchan[x].framedelay && !--_mchan[x].framedelay) {
|
|
switch (_mchan[x].command) {
|
|
case 0x00:
|
|
case 0x13:
|
|
_mchan[x].voldelta = -10;
|
|
break;
|
|
|
|
case 0x01:
|
|
case 0x03:
|
|
case 0x08:
|
|
case 0x16:
|
|
_mchan[x].envflags = 0x30;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = 0;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x02:
|
|
_mchan[x].envflags = 0xB0;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = 0;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeChannel(x, 1, 0x84);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x04:
|
|
_mchan[x].envflags = 0x80;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = 0;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x05:
|
|
_mchan[x].envflags = 0xF0;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = -15;
|
|
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x06:
|
|
_mchan[x].pitch += 0x18;
|
|
_mchan[x].envflags = 0x80;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = 0;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x07:
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch - 0x0C] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch - 0x0C] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x09:
|
|
_mchan[x].voldelta = -2;
|
|
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x0A:
|
|
APU_writeChannel(x, 1, 0x86);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x0B: case 0x1A:
|
|
_mchan[x].envflags = 0x70;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = 0;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x0C:
|
|
_mchan[x].envflags = 0xB0;
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x0D:
|
|
_mchan[x].envflags = 0x30;
|
|
_mchan[x].volume = 0x5F;
|
|
_mchan[x].voldelta = -22;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, _mchan[x].pitch & 0xF);
|
|
APU_writeChannel(x, 3, 0xFF);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x0E:
|
|
case 0x10:
|
|
_mchan[x].envflags = 0x30;
|
|
_mchan[x].volume = 0x5F;
|
|
_mchan[x].voldelta = -6;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, _mchan[x].pitch & 0xF);
|
|
APU_writeChannel(x, 3, 0xFF);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x0F:
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x11:
|
|
APU_writeChannel(x, 2, _mchan[x].pitch & 0xF);
|
|
APU_writeChannel(x, 3, 0xFF);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x12:
|
|
APU_writeChannel(x, 2, (_mchan[x].pitch + 3) & 0xF);
|
|
APU_writeChannel(x, 3, 0xFF);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x14:
|
|
_mchan[x].voldelta = -12;
|
|
|
|
APU_writeChannel(x, 1, 0x8C);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x15:
|
|
_mchan[x].voldelta = -12;
|
|
|
|
APU_writeChannel(x, 1, 0x84);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x17:
|
|
_mchan[x].pitch += 0x0C;
|
|
_mchan[x].envflags = 0x80;
|
|
_mchan[x].volume = 0x6F;
|
|
_mchan[x].voldelta = 0;
|
|
|
|
APU_writeChannel(x, 0, 0x00);
|
|
APU_writeChannel(x, 1, 0x7F);
|
|
APU_writeControl(APU_readStatus() | channelMask[x]);
|
|
APU_writeChannel(x, 2, freqTable[_mchan[x].pitch] & 0xFF);
|
|
APU_writeChannel(x, 3, freqTable[_mchan[x].pitch] >> 8);
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x18:
|
|
_mchan[x].envflags = 0x70;
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x19:
|
|
_mchan[x].envflags = 0xB0;
|
|
|
|
chainCommand(x);
|
|
break;
|
|
|
|
case 0x1B:
|
|
_mchan[x].envflags = 0x00;
|
|
_mchan[x].voldelta = -10;
|
|
break;
|
|
}
|
|
}
|
|
|
|
_mchan[x].volume += _mchan[x].voldelta;
|
|
|
|
if (_mchan[x].volume < 0)
|
|
_mchan[x].volume = 0;
|
|
if (_mchan[x].volume > MAXVOLUME)
|
|
_mchan[x].volume = MAXVOLUME;
|
|
|
|
APU_writeChannel(x, 0, (_mchan[x].volume >> 3) | _mchan[x].envflags);
|
|
}
|
|
}
|
|
|
|
void Player_NES::chainCommand(int c) {
|
|
int i = _mchan[c].command;
|
|
_mchan[c].command = nextCmd[i];
|
|
_mchan[c].framedelay = nextDelay[i];
|
|
}
|
|
|
|
int Player_NES::getSoundStatus(int nr) const {
|
|
for (int i = 0; i < NUMSLOTS; i++)
|
|
if (_slot[i].id == nr)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
|
|
void Player_NES::APU_writeChannel(int chan, int offset, byte value) {
|
|
APUe::APU_WriteReg(0x000 + 4 * chan + offset, value);
|
|
}
|
|
void Player_NES::APU_writeControl(byte value) {
|
|
APUe::APU_WriteReg(0x015, value);
|
|
}
|
|
byte Player_NES::APU_readStatus() {
|
|
return APUe::APU_Read4015();
|
|
}
|
|
|
|
} // End of namespace Scumm
|