mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-20 08:48:13 +00:00
1068 lines
22 KiB
C++
1068 lines
22 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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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 "engines/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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static 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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class SoundGen {
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protected:
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byte wavehold;
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uint32 freq; // short
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uint32 CurD;
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public:
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byte Timer;
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int32 Pos;
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uint32 Cycles; // short
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inline byte GetTimer() const { return Timer; };
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};
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class Square : public SoundGen {
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protected:
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byte volume, envelope, duty, swpspeed, swpdir, swpstep, swpenab;
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byte Vol;
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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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void CheckActive(void);
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public:
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void Reset(void);
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void Write(int Reg, byte Val);
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void Run(void);
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void QuarterFrame(void);
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void HalfFrame(void);
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};
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static 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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void Square::Reset(void) {
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memset(this, 0, sizeof(*this));
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Cycles = 1;
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EnvCtr = 1;
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BendCtr = 1;
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}
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void Square::CheckActive(void) {
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ValidFreq = (freq >= 0x8) && ((swpdir) || !((freq + (freq >> swpstep)) & 0x800));
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Active = Timer && ValidFreq;
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Pos = Active ? (Duties[duty][CurD] * Vol) : 0;
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}
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void Square::Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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volume = Val & 0xF;
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envelope = Val & 0x10;
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wavehold = Val & 0x20;
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duty = (Val >> 6) & 0x3;
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Vol = envelope ? volume : Envelope;
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break;
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case 1:
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swpstep = Val & 0x07;
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swpdir = Val & 0x08;
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swpspeed = (Val >> 4) & 0x7;
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swpenab = Val & 0x80;
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SwpClk = true;
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break;
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case 2:
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freq &= 0x700;
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freq |= Val;
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break;
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case 3:
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freq &= 0xFF;
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freq |= (Val & 0x7) << 8;
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if (Enabled)
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Timer = LengthCounts[(Val >> 3) & 0x1F];
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CurD = 0;
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EnvClk = true;
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break;
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case 4:
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Enabled = (Val != 0);
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if (!Enabled)
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Timer = 0;
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break;
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}
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CheckActive();
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}
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void Square::Run(void) {
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Cycles = (freq + 1) << 1;
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CurD = (CurD + 1) & 0x7;
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if (Active)
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Pos = Duties[duty][CurD] * Vol;
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}
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void Square::QuarterFrame(void) {
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if (EnvClk) {
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EnvClk = false;
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Envelope = 0xF;
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EnvCtr = volume + 1;
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} else if (!--EnvCtr) {
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EnvCtr = volume + 1;
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if (Envelope)
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Envelope--;
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else
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Envelope = wavehold ? 0xF : 0x0;
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}
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Vol = envelope ? volume : Envelope;
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CheckActive();
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}
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void Square::HalfFrame(void) {
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if (!--BendCtr) {
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BendCtr = swpspeed + 1;
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if (swpenab && swpstep && ValidFreq) {
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int sweep = freq >> swpstep;
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// FIXME: Is -sweep or ~sweep correct???
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freq += swpdir ? -sweep : sweep;
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}
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}
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if (SwpClk) {
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SwpClk = false;
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BendCtr = swpspeed + 1;
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}
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if (Timer && !wavehold)
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Timer--;
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CheckActive();
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}
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class Triangle : public SoundGen {
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protected:
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byte linear;
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byte LinCtr;
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bool Enabled, Active;
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bool LinClk;
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void CheckActive(void);
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public:
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void Reset(void);
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void Write(int Reg, byte Val);
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void Run(void);
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void QuarterFrame(void);
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void HalfFrame(void);
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};
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static 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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void Triangle::Reset(void) {
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memset(this, 0, sizeof(*this));
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Cycles = 1;
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}
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void Triangle::CheckActive(void) {
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Active = Timer && LinCtr;
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if (freq < 4)
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Pos = 0; // beyond hearing range
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else
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Pos = TriDuty[CurD] * 8;
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}
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void Triangle::Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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linear = Val & 0x7F;
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wavehold = (Val >> 7) & 0x1;
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break;
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case 2:
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freq &= 0x700;
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freq |= Val;
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break;
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case 3:
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freq &= 0xFF;
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freq |= (Val & 0x7) << 8;
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if (Enabled)
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Timer = LengthCounts[(Val >> 3) & 0x1F];
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LinClk = true;
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break;
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case 4:
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Enabled = (Val != 0);
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if (!Enabled)
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Timer = 0;
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break;
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}
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CheckActive();
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}
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void Triangle::Run(void) {
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Cycles = freq + 1;
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if (Active) {
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CurD++;
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CurD &= 0x1F;
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if (freq < 4)
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Pos = 0; // beyond hearing range
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else
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Pos = TriDuty[CurD] * 8;
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}
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}
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void Triangle::QuarterFrame(void) {
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if (LinClk)
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LinCtr = linear;
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else if (LinCtr)
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LinCtr--;
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if (!wavehold)
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LinClk = false;
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CheckActive();
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}
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void Triangle::HalfFrame(void) {
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if (Timer && !wavehold)
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Timer--;
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CheckActive();
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}
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class Noise : public SoundGen {
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protected:
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byte volume, envelope, datatype;
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byte Vol;
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byte EnvCtr, Envelope;
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bool Enabled;
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bool EnvClk;
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void CheckActive(void);
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public:
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void Reset(void);
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void Write(int Reg, byte Val);
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void Run(void);
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void QuarterFrame(void);
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void HalfFrame(void);
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};
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static 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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void Noise::Reset(void) {
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memset(this, 0, sizeof(*this));
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CurD = 1;
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Cycles = 1;
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EnvCtr = 1;
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}
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void Noise::Write(int Reg, byte Val) {
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switch (Reg) {
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case 0:
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volume = Val & 0x0F;
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envelope = Val & 0x10;
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wavehold = Val & 0x20;
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Vol = envelope ? volume : Envelope;
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if (Timer)
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Pos = ((CurD & 0x4000) ? -2 : 2) * Vol;
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break;
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case 2:
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freq = Val & 0xF;
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datatype = Val & 0x80;
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break;
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case 3:
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if (Enabled)
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Timer = LengthCounts[(Val >> 3) & 0x1F];
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EnvClk = true;
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break;
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case 4:
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Enabled = (Val != 0);
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if (!Enabled)
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Timer = 0;
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break;
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}
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}
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void Noise::Run(void) {
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Cycles = NoiseFreq[freq]; /* no + 1 here */
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if (datatype)
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CurD = (CurD << 1) | (((CurD >> 14) ^ (CurD >> 8)) & 0x1);
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else
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CurD = (CurD << 1) | (((CurD >> 14) ^ (CurD >> 13)) & 0x1);
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if (Timer)
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Pos = ((CurD & 0x4000) ? -2 : 2) * Vol;
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}
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void Noise::QuarterFrame(void) {
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if (EnvClk) {
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EnvClk = false;
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Envelope = 0xF;
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EnvCtr = volume + 1;
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} else if (!--EnvCtr) {
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EnvCtr = volume + 1;
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if (Envelope)
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Envelope--;
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else
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Envelope = wavehold ? 0xF : 0x0;
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}
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Vol = envelope ? volume : Envelope;
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if (Timer)
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Pos = ((CurD & 0x4000) ? -2 : 2) * Vol;
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}
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void Noise::HalfFrame(void) {
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if (Timer && !wavehold)
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Timer--;
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}
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class APU {
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protected:
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int BufPos;
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int SampleRate;
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Square _square0;
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Square _square1;
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Triangle _triangle;
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Noise _noise;
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struct {
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uint32 Cycles;
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int Num;
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} Frame;
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public:
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APU(int rate) : SampleRate(rate) {
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Reset();
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}
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void WriteReg(int Addr, byte Val);
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byte Read4015(void);
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void Reset (void);
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int16 GetSample(void);
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};
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void APU::WriteReg(int Addr, byte Val) {
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switch (Addr) {
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case 0x000: _square0.Write(0,Val); break;
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case 0x001: _square0.Write(1,Val); break;
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case 0x002: _square0.Write(2,Val); break;
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case 0x003: _square0.Write(3,Val); break;
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case 0x004: _square1.Write(0,Val); break;
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case 0x005: _square1.Write(1,Val); break;
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case 0x006: _square1.Write(2,Val); break;
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case 0x007: _square1.Write(3,Val); break;
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case 0x008: _triangle.Write(0,Val); break;
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case 0x009: _triangle.Write(1,Val); break;
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case 0x00A: _triangle.Write(2,Val); break;
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case 0x00B: _triangle.Write(3,Val); break;
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case 0x00C: _noise.Write(0,Val); break;
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case 0x00D: _noise.Write(1,Val); break;
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case 0x00E: _noise.Write(2,Val); break;
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case 0x00F: _noise.Write(3,Val); break;
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case 0x015: _square0.Write(4,Val & 0x1);
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_square1.Write(4,Val & 0x2);
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_triangle.Write(4,Val & 0x4);
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_noise.Write(4,Val & 0x8);
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break;
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}
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}
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byte APU::Read4015(void) {
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byte result =
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(( _square0.GetTimer()) ? 0x01 : 0) |
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(( _square1.GetTimer()) ? 0x02 : 0) |
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((_triangle.GetTimer()) ? 0x04 : 0) |
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(( _noise.GetTimer()) ? 0x08 : 0);
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return result;
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}
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void APU::Reset (void) {
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BufPos = 0;
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_square0.Reset();
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_square1.Reset();
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_triangle.Reset();
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_noise.Reset();
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Frame.Num = 0;
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Frame.Cycles = 1;
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}
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template <class T>
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int step(T &obj, int sampcycles, uint frame_Cycles, int frame_Num) {
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int samppos = 0;
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while (sampcycles) {
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// Compute the maximal amount we can step ahead before triggering
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// an action (i.e. compute the minimum of sampcycles, frame_Cycles
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// and obj.Cycles).
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uint max_step = sampcycles;
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if (max_step > frame_Cycles)
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max_step = frame_Cycles;
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if (max_step > obj.Cycles)
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max_step = obj.Cycles;
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|
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// During all but the last of these steps, we just add the value of obj.Pos
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// to samppos -- so we can to that all at once with a simple multiplication:
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samppos += obj.Pos * (max_step - 1);
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|
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// Now step ahead...
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sampcycles -= max_step;
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frame_Cycles -= max_step;
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obj.Cycles -= max_step;
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|
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if (!frame_Cycles) {
|
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frame_Cycles = 7457;
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|
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if (frame_Num < 4) {
|
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obj.QuarterFrame();
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|
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if (frame_Num & 1)
|
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frame_Cycles++;
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else
|
|
obj.HalfFrame();
|
|
|
|
frame_Num++;
|
|
} else
|
|
frame_Num = 0;
|
|
}
|
|
|
|
if (!obj.Cycles)
|
|
obj.Run();
|
|
|
|
samppos += obj.Pos;
|
|
}
|
|
|
|
return samppos;
|
|
}
|
|
|
|
int16 APU::GetSample(void) {
|
|
int samppos = 0;
|
|
|
|
const int sampcycles = 1+(1789773-BufPos-1)/SampleRate;
|
|
BufPos = BufPos + sampcycles * SampleRate - 1789773;
|
|
|
|
samppos += step( _square0, sampcycles, Frame.Cycles, Frame.Num);
|
|
samppos += step( _square1, sampcycles, Frame.Cycles, Frame.Num);
|
|
samppos += step(_triangle, sampcycles, Frame.Cycles, Frame.Num);
|
|
samppos += step( _noise, sampcycles, Frame.Cycles, Frame.Num);
|
|
|
|
uint tmp = sampcycles;
|
|
while (tmp >= Frame.Cycles) {
|
|
tmp -= Frame.Cycles;
|
|
Frame.Cycles = 7457;
|
|
|
|
if (Frame.Num < 4) {
|
|
if (Frame.Num & 1)
|
|
Frame.Cycles++;
|
|
Frame.Num++;
|
|
} else
|
|
Frame.Num = 0;
|
|
}
|
|
|
|
Frame.Cycles -= tmp;
|
|
|
|
return (samppos << 6) / sampcycles;
|
|
}
|
|
|
|
} // End of namespace APUe
|
|
|
|
Player_NES::Player_NES(ScummEngine *scumm, Audio::Mixer *mixer) {
|
|
int i;
|
|
_vm = scumm;
|
|
_mixer = mixer;
|
|
_sample_rate = _mixer->getOutputRate();
|
|
_apu = new APUe::APU(_sample_rate);
|
|
|
|
_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);
|
|
|
|
_mixer->playInputStream(Audio::Mixer::kPlainSoundType, &_soundHandle, this, -1, Audio::Mixer::kMaxChannelVolume, 0, false, true);
|
|
}
|
|
|
|
Player_NES::~Player_NES() {
|
|
_mixer->stopHandle(_soundHandle);
|
|
delete _apu;
|
|
}
|
|
|
|
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] = _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) {
|
|
_apu->WriteReg(0x000 + 4 * chan + offset, value);
|
|
}
|
|
void Player_NES::APU_writeControl(byte value) {
|
|
_apu->WriteReg(0x015, value);
|
|
}
|
|
byte Player_NES::APU_readStatus() {
|
|
return _apu->Read4015();
|
|
}
|
|
|
|
} // End of namespace Scumm
|