mirror of
https://github.com/dborth/vbagx.git
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1336 lines
32 KiB
C++
1336 lines
32 KiB
C++
// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
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// Copyright (C) 1999-2003 Forgotten
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// Copyright (C) 2004 Forgotten and the VBA development team
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// Copyright (C) 2004-2006 VBA development team
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2, or(at your option)
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// any later version.
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//
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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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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software Foundation,
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// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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#include <string.h>
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#include "Sound.h"
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#include "agb/GBA.h"
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#include "Globals.h"
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#include "Util.h"
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#define USE_TICKS_AS 380
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#define SOUND_MAGIC 0x60000000
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#define SOUND_MAGIC_2 0x30000000
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#define NOISE_MAGIC 5
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extern bool stopState;
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u8 soundWavePattern[4][32] = {
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{0x01,0x01,0x01,0x01,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff},
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{0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff},
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{0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff},
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{0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0x01,0x01,0x01,0x01,
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0xff,0xff,0xff,0xff,
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0xff,0xff,0xff,0xff}
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};
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int soundFreqRatio[8] = {
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1048576, // 0
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524288, // 1
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262144, // 2
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174763, // 3
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131072, // 4
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104858, // 5
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87381, // 6
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74898 // 7
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};
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int soundShiftClock[16]= {
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2, // 0
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4, // 1
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8, // 2
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16, // 3
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32, // 4
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64, // 5
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128, // 6
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256, // 7
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512, // 8
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1024, // 9
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2048, // 10
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4096, // 11
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8192, // 12
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16384, // 13
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1, // 14
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1 // 15
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};
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int soundVolume = 0;
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u8 soundBuffer[6][735];
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u16 soundFinalWave[1470];
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int soundBufferLen = 1470;
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int soundBufferTotalLen = 14700;
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int soundQuality = 2;
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int soundPaused = 1;
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int soundPlay = 0;
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int soundTicks = soundQuality * USE_TICKS_AS;
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int SOUND_CLOCK_TICKS = soundQuality * USE_TICKS_AS;
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u32 soundNextPosition = 0;
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int soundLevel1 = 0;
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int soundLevel2 = 0;
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int soundBalance = 0;
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int soundMasterOn = 0;
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int soundIndex = 0;
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int soundBufferIndex = 0;
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int soundDebug = 0;
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bool soundOffFlag = false;
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int sound1On = 0;
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int sound1ATL = 0;
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int sound1Skip = 0;
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int sound1Index = 0;
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int sound1Continue = 0;
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int sound1EnvelopeVolume = 0;
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int sound1EnvelopeATL = 0;
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int sound1EnvelopeUpDown = 0;
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int sound1EnvelopeATLReload = 0;
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int sound1SweepATL = 0;
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int sound1SweepATLReload = 0;
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int sound1SweepSteps = 0;
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int sound1SweepUpDown = 0;
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int sound1SweepStep = 0;
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u8 *sound1Wave = soundWavePattern[2];
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int sound2On = 0;
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int sound2ATL = 0;
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int sound2Skip = 0;
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int sound2Index = 0;
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int sound2Continue = 0;
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int sound2EnvelopeVolume = 0;
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int sound2EnvelopeATL = 0;
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int sound2EnvelopeUpDown = 0;
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int sound2EnvelopeATLReload = 0;
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u8 *sound2Wave = soundWavePattern[2];
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int sound3On = 0;
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int sound3ATL = 0;
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int sound3Skip = 0;
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int sound3Index = 0;
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int sound3Continue = 0;
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int sound3OutputLevel = 0;
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int sound3Last = 0;
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u8 sound3WaveRam[0x20];
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int sound3Bank = 0;
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int sound3DataSize = 0;
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int sound3ForcedOutput = 0;
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int sound4On = 0;
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int sound4Clock = 0;
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int sound4ATL = 0;
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int sound4Skip = 0;
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int sound4Index = 0;
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int sound4ShiftRight = 0x7f;
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int sound4ShiftSkip = 0;
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int sound4ShiftIndex = 0;
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int sound4NSteps = 0;
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int sound4CountDown = 0;
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int sound4Continue = 0;
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int sound4EnvelopeVolume = 0;
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int sound4EnvelopeATL = 0;
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int sound4EnvelopeUpDown = 0;
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int sound4EnvelopeATLReload = 0;
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int soundControl = 0;
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int soundDSFifoAIndex = 0;
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int soundDSFifoACount = 0;
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int soundDSFifoAWriteIndex = 0;
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bool soundDSAEnabled = false;
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int soundDSATimer = 0;
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u8 soundDSFifoA[32];
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u8 soundDSAValue = 0;
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int soundDSFifoBIndex = 0;
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int soundDSFifoBCount = 0;
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int soundDSFifoBWriteIndex = 0;
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bool soundDSBEnabled = false;
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int soundDSBTimer = 0;
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u8 soundDSFifoB[32];
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u8 soundDSBValue = 0;
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int soundEnableFlag = 0x3ff;
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s16 soundFilter[4000];
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s16 soundRight[5] = { 0, 0, 0, 0, 0 };
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s16 soundLeft[5] = { 0, 0, 0, 0, 0 };
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int soundEchoIndex = 0;
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bool soundEcho = false;
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bool soundLowPass = false;
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bool soundReverse = false;
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variable_desc soundSaveStruct[] = {
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{ &soundPaused, sizeof(int) },
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{ &soundPlay, sizeof(int) },
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{ &soundTicks, sizeof(int) },
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{ &SOUND_CLOCK_TICKS, sizeof(int) },
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{ &soundLevel1, sizeof(int) },
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{ &soundLevel2, sizeof(int) },
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{ &soundBalance, sizeof(int) },
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{ &soundMasterOn, sizeof(int) },
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{ &soundIndex, sizeof(int) },
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{ &sound1On, sizeof(int) },
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{ &sound1ATL, sizeof(int) },
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{ &sound1Skip, sizeof(int) },
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{ &sound1Index, sizeof(int) },
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{ &sound1Continue, sizeof(int) },
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{ &sound1EnvelopeVolume, sizeof(int) },
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{ &sound1EnvelopeATL, sizeof(int) },
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{ &sound1EnvelopeATLReload, sizeof(int) },
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{ &sound1EnvelopeUpDown, sizeof(int) },
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{ &sound1SweepATL, sizeof(int) },
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{ &sound1SweepATLReload, sizeof(int) },
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{ &sound1SweepSteps, sizeof(int) },
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{ &sound1SweepUpDown, sizeof(int) },
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{ &sound1SweepStep, sizeof(int) },
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{ &sound2On, sizeof(int) },
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{ &sound2ATL, sizeof(int) },
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{ &sound2Skip, sizeof(int) },
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{ &sound2Index, sizeof(int) },
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{ &sound2Continue, sizeof(int) },
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{ &sound2EnvelopeVolume, sizeof(int) },
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{ &sound2EnvelopeATL, sizeof(int) },
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{ &sound2EnvelopeATLReload, sizeof(int) },
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{ &sound2EnvelopeUpDown, sizeof(int) },
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{ &sound3On, sizeof(int) },
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{ &sound3ATL, sizeof(int) },
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{ &sound3Skip, sizeof(int) },
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{ &sound3Index, sizeof(int) },
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{ &sound3Continue, sizeof(int) },
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{ &sound3OutputLevel, sizeof(int) },
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{ &sound4On, sizeof(int) },
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{ &sound4ATL, sizeof(int) },
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{ &sound4Skip, sizeof(int) },
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{ &sound4Index, sizeof(int) },
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{ &sound4Clock, sizeof(int) },
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{ &sound4ShiftRight, sizeof(int) },
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{ &sound4ShiftSkip, sizeof(int) },
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{ &sound4ShiftIndex, sizeof(int) },
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{ &sound4NSteps, sizeof(int) },
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{ &sound4CountDown, sizeof(int) },
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{ &sound4Continue, sizeof(int) },
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{ &sound4EnvelopeVolume, sizeof(int) },
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{ &sound4EnvelopeATL, sizeof(int) },
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{ &sound4EnvelopeATLReload, sizeof(int) },
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{ &sound4EnvelopeUpDown, sizeof(int) },
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{ &soundEnableFlag, sizeof(int) },
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{ &soundControl, sizeof(int) },
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{ &soundDSFifoAIndex, sizeof(int) },
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{ &soundDSFifoACount, sizeof(int) },
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{ &soundDSFifoAWriteIndex, sizeof(int) },
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{ &soundDSAEnabled, sizeof(bool) },
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{ &soundDSATimer, sizeof(int) },
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{ &soundDSFifoA[0], 32 },
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{ &soundDSAValue, sizeof(u8) },
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{ &soundDSFifoBIndex, sizeof(int) },
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{ &soundDSFifoBCount, sizeof(int) },
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{ &soundDSFifoBWriteIndex, sizeof(int) },
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{ &soundDSBEnabled, sizeof(int) },
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{ &soundDSBTimer, sizeof(int) },
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{ &soundDSFifoB[0], 32 },
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{ &soundDSBValue, sizeof(int) },
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{ &soundBuffer[0][0], 6*735 },
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{ &soundFinalWave[0], 2*735 },
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{ NULL, 0 }
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};
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variable_desc soundSaveStructV2[] = {
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{ &sound3WaveRam[0], 0x20 },
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{ &sound3Bank, sizeof(int) },
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{ &sound3DataSize, sizeof(int) },
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{ &sound3ForcedOutput, sizeof(int) },
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{ NULL, 0 }
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};
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void soundEvent(u32 address, u8 data)
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{
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int freq = 0;
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switch(address) {
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case NR10:
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data &= 0x7f;
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sound1SweepATL = sound1SweepATLReload = 344 * ((data >> 4) & 7);
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sound1SweepSteps = data & 7;
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sound1SweepUpDown = data & 0x08;
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sound1SweepStep = 0;
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ioMem[address] = data;
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break;
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case NR11:
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sound1Wave = soundWavePattern[data >> 6];
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sound1ATL = 172 * (64 - (data & 0x3f));
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ioMem[address] = data;
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break;
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case NR12:
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sound1EnvelopeUpDown = data & 0x08;
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sound1EnvelopeATLReload = 689 * (data & 7);
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if((data & 0xF8) == 0)
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sound1EnvelopeVolume = 0;
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ioMem[address] = data;
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break;
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case NR13:
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freq = (((int)(ioMem[NR14] & 7)) << 8) | data;
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sound1ATL = 172 * (64 - (ioMem[NR11] & 0x3f));
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freq = 2048 - freq;
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if(freq) {
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sound1Skip = SOUND_MAGIC / freq;
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} else
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sound1Skip = 0;
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ioMem[address] = data;
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break;
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case NR14:
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data &= 0xC7;
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freq = (((int)(data&7) << 8) | ioMem[NR13]);
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freq = 2048 - freq;
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sound1ATL = 172 * (64 - (ioMem[NR11] & 0x3f));
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sound1Continue = data & 0x40;
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if(freq) {
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sound1Skip = SOUND_MAGIC / freq;
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} else
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sound1Skip = 0;
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if(data & 0x80) {
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ioMem[NR52] |= 1;
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sound1EnvelopeVolume = ioMem[NR12] >> 4;
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sound1EnvelopeUpDown = ioMem[NR12] & 0x08;
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sound1ATL = 172 * (64 - (ioMem[NR11] & 0x3f));
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sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (ioMem[NR12] & 7);
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sound1SweepATL = sound1SweepATLReload = 344 * ((ioMem[NR10] >> 4) & 7);
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sound1SweepSteps = ioMem[NR10] & 7;
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sound1SweepUpDown = ioMem[NR10] & 0x08;
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sound1SweepStep = 0;
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sound1Index = 0;
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sound1On = 1;
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}
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ioMem[address] = data;
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break;
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case NR21:
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sound2Wave = soundWavePattern[data >> 6];
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sound2ATL = 172 * (64 - (data & 0x3f));
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ioMem[address] = data;
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break;
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case NR22:
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sound2EnvelopeUpDown = data & 0x08;
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sound2EnvelopeATLReload = 689 * (data & 7);
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if((data & 0xF8) == 0)
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sound2EnvelopeVolume = 0;
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ioMem[address] = data;
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break;
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case NR23:
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freq = (((int)(ioMem[NR24] & 7)) << 8) | data;
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sound2ATL = 172 * (64 - (ioMem[NR21] & 0x3f));
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freq = 2048 - freq;
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if(freq) {
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sound2Skip = SOUND_MAGIC / freq;
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} else
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sound2Skip = 0;
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ioMem[address] = data;
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break;
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case NR24:
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data &= 0xC7;
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freq = (((int)(data&7) << 8) | ioMem[NR23]);
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freq = 2048 - freq;
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sound2ATL = 172 * (64 - (ioMem[NR21] & 0x3f));
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sound2Continue = data & 0x40;
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if(freq) {
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sound2Skip = SOUND_MAGIC / freq;
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} else
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sound2Skip = 0;
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if(data & 0x80) {
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ioMem[NR52] |= 2;
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sound2EnvelopeVolume = ioMem[NR22] >> 4;
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sound2EnvelopeUpDown = ioMem[NR22] & 0x08;
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sound2ATL = 172 * (64 - (ioMem[NR21] & 0x3f));
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sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (ioMem[NR22] & 7);
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sound2Index = 0;
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sound2On = 1;
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}
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ioMem[address] = data;
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break;
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case NR30:
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data &= 0xe0;
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if(!(data & 0x80)) {
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ioMem[NR52] &= 0xfb;
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sound3On = 0;
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}
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if(((data >> 6) & 1) != sound3Bank)
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memcpy(&ioMem[0x90], &sound3WaveRam[(((data >> 6) & 1) * 0x10)^0x10],
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0x10);
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sound3Bank = (data >> 6) & 1;
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sound3DataSize = (data >> 5) & 1;
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ioMem[address] = data;
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break;
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case NR31:
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sound3ATL = 172 * (256-data);
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ioMem[address] = data;
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break;
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case NR32:
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data &= 0xe0;
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sound3OutputLevel = (data >> 5) & 3;
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sound3ForcedOutput = (data >> 7) & 1;
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ioMem[address] = data;
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break;
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case NR33:
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freq = 2048 - (((int)(ioMem[NR34]&7) << 8) | data);
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if(freq) {
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sound3Skip = SOUND_MAGIC_2 / freq;
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} else
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sound3Skip = 0;
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ioMem[address] = data;
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break;
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case NR34:
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data &= 0xc7;
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freq = 2048 - (((data &7) << 8) | (int)ioMem[NR33]);
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if(freq) {
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sound3Skip = SOUND_MAGIC_2 / freq;
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} else {
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sound3Skip = 0;
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}
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sound3Continue = data & 0x40;
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if((data & 0x80) && (ioMem[NR30] & 0x80)) {
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ioMem[NR52] |= 4;
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sound3ATL = 172 * (256 - ioMem[NR31]);
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sound3Index = 0;
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sound3On = 1;
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}
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ioMem[address] = data;
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break;
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case NR41:
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data &= 0x3f;
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sound4ATL = 172 * (64 - (data & 0x3f));
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ioMem[address] = data;
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break;
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case NR42:
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sound4EnvelopeUpDown = data & 0x08;
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sound4EnvelopeATLReload = 689 * (data & 7);
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if((data & 0xF8) == 0)
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sound4EnvelopeVolume = 0;
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ioMem[address] = data;
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break;
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case NR43:
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freq = soundFreqRatio[data & 7];
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sound4NSteps = data & 0x08;
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sound4Skip = (freq << 8) / NOISE_MAGIC;
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sound4Clock = data >> 4;
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freq = freq / soundShiftClock[sound4Clock];
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sound4ShiftSkip = (freq << 8) / NOISE_MAGIC;
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ioMem[address] = data;
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break;
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case NR44:
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data &= 0xc0;
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sound4Continue = data & 0x40;
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if(data & 0x80) {
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ioMem[NR52] |= 8;
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sound4EnvelopeVolume = ioMem[NR42] >> 4;
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sound4EnvelopeUpDown = ioMem[NR42] & 0x08;
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sound4ATL = 172 * (64 - (ioMem[NR41] & 0x3f));
|
|
sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (ioMem[NR42] & 7);
|
|
|
|
sound4On = 1;
|
|
|
|
sound4Index = 0;
|
|
sound4ShiftIndex = 0;
|
|
|
|
freq = soundFreqRatio[ioMem[NR43] & 7];
|
|
|
|
sound4Skip = (freq << 8) / NOISE_MAGIC;
|
|
|
|
sound4NSteps = ioMem[NR43] & 0x08;
|
|
|
|
freq = freq / soundShiftClock[ioMem[NR43] >> 4];
|
|
|
|
sound4ShiftSkip = (freq << 8) / NOISE_MAGIC;
|
|
if(sound4NSteps)
|
|
sound4ShiftRight = 0x7fff;
|
|
else
|
|
sound4ShiftRight = 0x7f;
|
|
}
|
|
ioMem[address] = data;
|
|
break;
|
|
case NR50:
|
|
data &= 0x77;
|
|
soundLevel1 = data & 7;
|
|
soundLevel2 = (data >> 4) & 7;
|
|
ioMem[address] = data;
|
|
break;
|
|
case NR51:
|
|
soundBalance = (data & soundEnableFlag);
|
|
ioMem[address] = data;
|
|
break;
|
|
case NR52:
|
|
data &= 0x80;
|
|
data |= ioMem[NR52] & 15;
|
|
soundMasterOn = data & 0x80;
|
|
if(!(data & 0x80)) {
|
|
sound1On = 0;
|
|
sound2On = 0;
|
|
sound3On = 0;
|
|
sound4On = 0;
|
|
}
|
|
ioMem[address] = data;
|
|
break;
|
|
case 0x90:
|
|
case 0x91:
|
|
case 0x92:
|
|
case 0x93:
|
|
case 0x94:
|
|
case 0x95:
|
|
case 0x96:
|
|
case 0x97:
|
|
case 0x98:
|
|
case 0x99:
|
|
case 0x9a:
|
|
case 0x9b:
|
|
case 0x9c:
|
|
case 0x9d:
|
|
case 0x9e:
|
|
case 0x9f:
|
|
sound3WaveRam[(sound3Bank*0x10)^0x10+(address&15)] = data;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void soundEvent(u32 address, u16 data)
|
|
{
|
|
switch(address) {
|
|
case SGCNT0_H:
|
|
data &= 0xFF0F;
|
|
soundControl = data & 0x770F;
|
|
if(data & 0x0800) {
|
|
soundDSFifoAWriteIndex = 0;
|
|
soundDSFifoAIndex = 0;
|
|
soundDSFifoACount = 0;
|
|
soundDSAValue = 0;
|
|
memset(soundDSFifoA, 0, 32);
|
|
}
|
|
soundDSAEnabled = (data & 0x0300) ? true : false;
|
|
soundDSATimer = (data & 0x0400) ? 1 : 0;
|
|
if(data & 0x8000) {
|
|
soundDSFifoBWriteIndex = 0;
|
|
soundDSFifoBIndex = 0;
|
|
soundDSFifoBCount = 0;
|
|
soundDSBValue = 0;
|
|
memset(soundDSFifoB, 0, 32);
|
|
}
|
|
soundDSBEnabled = (data & 0x3000) ? true : false;
|
|
soundDSBTimer = (data & 0x4000) ? 1 : 0;
|
|
*((u16 *)&ioMem[address]) = soundControl;
|
|
break;
|
|
case FIFOA_L:
|
|
case FIFOA_H:
|
|
soundDSFifoA[soundDSFifoAWriteIndex++] = data & 0xFF;
|
|
soundDSFifoA[soundDSFifoAWriteIndex++] = data >> 8;
|
|
soundDSFifoACount += 2;
|
|
soundDSFifoAWriteIndex &= 31;
|
|
*((u16 *)&ioMem[address]) = data;
|
|
break;
|
|
case FIFOB_L:
|
|
case FIFOB_H:
|
|
soundDSFifoB[soundDSFifoBWriteIndex++] = data & 0xFF;
|
|
soundDSFifoB[soundDSFifoBWriteIndex++] = data >> 8;
|
|
soundDSFifoBCount += 2;
|
|
soundDSFifoBWriteIndex &= 31;
|
|
*((u16 *)&ioMem[address]) = data;
|
|
break;
|
|
case 0x88:
|
|
data &= 0xC3FF;
|
|
*((u16 *)&ioMem[address]) = data;
|
|
break;
|
|
case 0x90:
|
|
case 0x92:
|
|
case 0x94:
|
|
case 0x96:
|
|
case 0x98:
|
|
case 0x9a:
|
|
case 0x9c:
|
|
case 0x9e:
|
|
*((u16 *)&sound3WaveRam[(sound3Bank*0x10)^0x10+(address&14)]) = data;
|
|
*((u16 *)&ioMem[address]) = data;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void soundChannel1()
|
|
{
|
|
int vol = sound1EnvelopeVolume;
|
|
|
|
int freq = 0;
|
|
int value = 0;
|
|
|
|
if(sound1On && (sound1ATL || !sound1Continue)) {
|
|
sound1Index += soundQuality*sound1Skip;
|
|
sound1Index &= 0x1fffffff;
|
|
|
|
value = ((s8)sound1Wave[sound1Index>>24]) * vol;
|
|
}
|
|
|
|
soundBuffer[0][soundIndex] = value;
|
|
|
|
|
|
if(sound1On) {
|
|
if(sound1ATL) {
|
|
sound1ATL-=soundQuality;
|
|
|
|
if(sound1ATL <=0 && sound1Continue) {
|
|
ioMem[NR52] &= 0xfe;
|
|
sound1On = 0;
|
|
}
|
|
}
|
|
|
|
if(sound1EnvelopeATL) {
|
|
sound1EnvelopeATL-=soundQuality;
|
|
|
|
if(sound1EnvelopeATL<=0) {
|
|
if(sound1EnvelopeUpDown) {
|
|
if(sound1EnvelopeVolume < 15)
|
|
sound1EnvelopeVolume++;
|
|
} else {
|
|
if(sound1EnvelopeVolume)
|
|
sound1EnvelopeVolume--;
|
|
}
|
|
|
|
sound1EnvelopeATL += sound1EnvelopeATLReload;
|
|
}
|
|
}
|
|
|
|
if(sound1SweepATL) {
|
|
sound1SweepATL-=soundQuality;
|
|
|
|
if(sound1SweepATL<=0) {
|
|
freq = (((int)(ioMem[NR14]&7) << 8) | ioMem[NR13]);
|
|
|
|
int updown = 1;
|
|
|
|
if(sound1SweepUpDown)
|
|
updown = -1;
|
|
|
|
int newfreq = 0;
|
|
if(sound1SweepSteps) {
|
|
newfreq = freq + updown * freq / (1 << sound1SweepSteps);
|
|
if(newfreq == freq)
|
|
newfreq = 0;
|
|
} else
|
|
newfreq = freq;
|
|
|
|
if(newfreq < 0) {
|
|
sound1SweepATL += sound1SweepATLReload;
|
|
} else if(newfreq > 2047) {
|
|
sound1SweepATL = 0;
|
|
sound1On = 0;
|
|
ioMem[NR52] &= 0xfe;
|
|
} else {
|
|
sound1SweepATL += sound1SweepATLReload;
|
|
sound1Skip = SOUND_MAGIC/(2048 - newfreq);
|
|
|
|
ioMem[NR13] = newfreq & 0xff;
|
|
ioMem[NR14] = (ioMem[NR14] & 0xf8) |((newfreq >> 8) & 7);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void soundChannel2()
|
|
{
|
|
// int freq = 0;
|
|
int vol = sound2EnvelopeVolume;
|
|
|
|
int value = 0;
|
|
|
|
if(sound2On && (sound2ATL || !sound2Continue)) {
|
|
sound2Index += soundQuality*sound2Skip;
|
|
sound2Index &= 0x1fffffff;
|
|
|
|
value = ((s8)sound2Wave[sound2Index>>24]) * vol;
|
|
}
|
|
|
|
soundBuffer[1][soundIndex] = value;
|
|
|
|
if(sound2On) {
|
|
if(sound2ATL) {
|
|
sound2ATL-=soundQuality;
|
|
|
|
if(sound2ATL <= 0 && sound2Continue) {
|
|
ioMem[NR52] &= 0xfd;
|
|
sound2On = 0;
|
|
}
|
|
}
|
|
|
|
if(sound2EnvelopeATL) {
|
|
sound2EnvelopeATL-=soundQuality;
|
|
|
|
if(sound2EnvelopeATL <= 0) {
|
|
if(sound2EnvelopeUpDown) {
|
|
if(sound2EnvelopeVolume < 15)
|
|
sound2EnvelopeVolume++;
|
|
} else {
|
|
if(sound2EnvelopeVolume)
|
|
sound2EnvelopeVolume--;
|
|
}
|
|
sound2EnvelopeATL += sound2EnvelopeATLReload;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void soundChannel3()
|
|
{
|
|
int value = sound3Last;
|
|
|
|
if(sound3On && (sound3ATL || !sound3Continue)) {
|
|
sound3Index += soundQuality*sound3Skip;
|
|
if(sound3DataSize) {
|
|
sound3Index &= 0x3fffffff;
|
|
value = sound3WaveRam[sound3Index>>25];
|
|
} else {
|
|
sound3Index &= 0x1fffffff;
|
|
value = sound3WaveRam[sound3Bank*0x10 + (sound3Index>>25)];
|
|
}
|
|
|
|
if( (sound3Index & 0x01000000)) {
|
|
value &= 0x0f;
|
|
} else {
|
|
value >>= 4;
|
|
}
|
|
|
|
value -= 8;
|
|
value *= 2;
|
|
|
|
if(sound3ForcedOutput) {
|
|
value = ((value >> 1) + value) >> 1;
|
|
} else {
|
|
switch(sound3OutputLevel) {
|
|
case 0:
|
|
value = 0;
|
|
break;
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
value = (value >> 1);
|
|
break;
|
|
case 3:
|
|
value = (value >> 2);
|
|
break;
|
|
}
|
|
}
|
|
sound3Last = value;
|
|
}
|
|
|
|
soundBuffer[2][soundIndex] = value;
|
|
|
|
if(sound3On) {
|
|
if(sound3ATL) {
|
|
sound3ATL-=soundQuality;
|
|
|
|
if(sound3ATL <= 0 && sound3Continue) {
|
|
ioMem[NR52] &= 0xfb;
|
|
sound3On = 0;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void soundChannel4()
|
|
{
|
|
int vol = sound4EnvelopeVolume;
|
|
|
|
int value = 0;
|
|
|
|
if(sound4Clock <= 0x0c) {
|
|
if(sound4On && (sound4ATL || !sound4Continue)) {
|
|
sound4Index += soundQuality*sound4Skip;
|
|
sound4ShiftIndex += soundQuality*sound4ShiftSkip;
|
|
|
|
if(sound4NSteps) {
|
|
while(sound4ShiftIndex > 0x1fffff) {
|
|
sound4ShiftRight = (((sound4ShiftRight << 6) ^
|
|
(sound4ShiftRight << 5)) & 0x40) |
|
|
(sound4ShiftRight >> 1);
|
|
sound4ShiftIndex -= 0x200000;
|
|
}
|
|
} else {
|
|
while(sound4ShiftIndex > 0x1fffff) {
|
|
sound4ShiftRight = (((sound4ShiftRight << 14) ^
|
|
(sound4ShiftRight << 13)) & 0x4000) |
|
|
(sound4ShiftRight >> 1);
|
|
|
|
sound4ShiftIndex -= 0x200000;
|
|
}
|
|
}
|
|
|
|
sound4Index &= 0x1fffff;
|
|
sound4ShiftIndex &= 0x1fffff;
|
|
|
|
value = ((sound4ShiftRight & 1)*2-1) * vol;
|
|
} else {
|
|
value = 0;
|
|
}
|
|
}
|
|
|
|
soundBuffer[3][soundIndex] = value;
|
|
|
|
if(sound4On) {
|
|
if(sound4ATL) {
|
|
sound4ATL-=soundQuality;
|
|
|
|
if(sound4ATL <= 0 && sound4Continue) {
|
|
ioMem[NR52] &= 0xfd;
|
|
sound4On = 0;
|
|
}
|
|
}
|
|
|
|
if(sound4EnvelopeATL) {
|
|
sound4EnvelopeATL-=soundQuality;
|
|
|
|
if(sound4EnvelopeATL <= 0) {
|
|
if(sound4EnvelopeUpDown) {
|
|
if(sound4EnvelopeVolume < 15)
|
|
sound4EnvelopeVolume++;
|
|
} else {
|
|
if(sound4EnvelopeVolume)
|
|
sound4EnvelopeVolume--;
|
|
}
|
|
sound4EnvelopeATL += sound4EnvelopeATLReload;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void soundDirectSoundA()
|
|
{
|
|
soundBuffer[4][soundIndex] = soundDSAValue;
|
|
}
|
|
|
|
void soundDirectSoundATimer()
|
|
{
|
|
if(soundDSAEnabled) {
|
|
if(soundDSFifoACount <= 16) {
|
|
CPUCheckDMA(3, 2);
|
|
if(soundDSFifoACount <= 16) {
|
|
soundEvent(FIFOA_L, (u16)0);
|
|
soundEvent(FIFOA_H, (u16)0);
|
|
soundEvent(FIFOA_L, (u16)0);
|
|
soundEvent(FIFOA_H, (u16)0);
|
|
soundEvent(FIFOA_L, (u16)0);
|
|
soundEvent(FIFOA_H, (u16)0);
|
|
soundEvent(FIFOA_L, (u16)0);
|
|
soundEvent(FIFOA_H, (u16)0);
|
|
}
|
|
}
|
|
|
|
soundDSAValue = (soundDSFifoA[soundDSFifoAIndex]);
|
|
soundDSFifoAIndex = (soundDSFifoAIndex + 1) & 31;
|
|
soundDSFifoACount--;
|
|
} else
|
|
soundDSAValue = 0;
|
|
}
|
|
|
|
void soundDirectSoundB()
|
|
{
|
|
soundBuffer[5][soundIndex] = soundDSBValue;
|
|
}
|
|
|
|
void soundDirectSoundBTimer()
|
|
{
|
|
if(soundDSBEnabled) {
|
|
if(soundDSFifoBCount <= 16) {
|
|
CPUCheckDMA(3, 4);
|
|
if(soundDSFifoBCount <= 16) {
|
|
soundEvent(FIFOB_L, (u16)0);
|
|
soundEvent(FIFOB_H, (u16)0);
|
|
soundEvent(FIFOB_L, (u16)0);
|
|
soundEvent(FIFOB_H, (u16)0);
|
|
soundEvent(FIFOB_L, (u16)0);
|
|
soundEvent(FIFOB_H, (u16)0);
|
|
soundEvent(FIFOB_L, (u16)0);
|
|
soundEvent(FIFOB_H, (u16)0);
|
|
}
|
|
}
|
|
|
|
soundDSBValue = (soundDSFifoB[soundDSFifoBIndex]);
|
|
soundDSFifoBIndex = (soundDSFifoBIndex + 1) & 31;
|
|
soundDSFifoBCount--;
|
|
} else {
|
|
soundDSBValue = 0;
|
|
}
|
|
}
|
|
|
|
void soundTimerOverflow(int timer)
|
|
{
|
|
if(soundDSAEnabled && (soundDSATimer == timer)) {
|
|
soundDirectSoundATimer();
|
|
}
|
|
if(soundDSBEnabled && (soundDSBTimer == timer)) {
|
|
soundDirectSoundBTimer();
|
|
}
|
|
}
|
|
|
|
#ifndef max
|
|
#define max(a,b) (a)<(b)?(b):(a)
|
|
#endif
|
|
|
|
void soundMix()
|
|
{
|
|
int res = 0;
|
|
int cgbRes = 0;
|
|
int ratio = ioMem[0x82] & 3;
|
|
int dsaRatio = ioMem[0x82] & 4;
|
|
int dsbRatio = ioMem[0x82] & 8;
|
|
|
|
if(soundBalance & 16) {
|
|
cgbRes = ((s8)soundBuffer[0][soundIndex]);
|
|
}
|
|
if(soundBalance & 32) {
|
|
cgbRes += ((s8)soundBuffer[1][soundIndex]);
|
|
}
|
|
if(soundBalance & 64) {
|
|
cgbRes += ((s8)soundBuffer[2][soundIndex]);
|
|
}
|
|
if(soundBalance & 128) {
|
|
cgbRes += ((s8)soundBuffer[3][soundIndex]);
|
|
}
|
|
|
|
if((soundControl & 0x0200) && (soundEnableFlag & 0x100)){
|
|
if(!dsaRatio)
|
|
res = ((s8)soundBuffer[4][soundIndex])>>1;
|
|
else
|
|
res = ((s8)soundBuffer[4][soundIndex]);
|
|
}
|
|
|
|
if((soundControl & 0x2000) && (soundEnableFlag & 0x200)){
|
|
if(!dsbRatio)
|
|
res += ((s8)soundBuffer[5][soundIndex])>>1;
|
|
else
|
|
res += ((s8)soundBuffer[5][soundIndex]);
|
|
}
|
|
|
|
res = (res * 170);
|
|
cgbRes = (cgbRes * 52 * soundLevel1);
|
|
|
|
switch(ratio) {
|
|
case 0:
|
|
case 3: // prohibited, but 25%
|
|
cgbRes >>= 2;
|
|
break;
|
|
case 1:
|
|
cgbRes >>= 1;
|
|
break;
|
|
case 2:
|
|
break;
|
|
}
|
|
|
|
res += cgbRes;
|
|
|
|
if(soundEcho) {
|
|
res *= 2;
|
|
res += soundFilter[soundEchoIndex];
|
|
res /= 2;
|
|
soundFilter[soundEchoIndex++] = res;
|
|
}
|
|
|
|
if(soundLowPass) {
|
|
soundLeft[4] = soundLeft[3];
|
|
soundLeft[3] = soundLeft[2];
|
|
soundLeft[2] = soundLeft[1];
|
|
soundLeft[1] = soundLeft[0];
|
|
soundLeft[0] = res;
|
|
res = (soundLeft[4] + 2*soundLeft[3] + 8*soundLeft[2] + 2*soundLeft[1] +
|
|
soundLeft[0])/14;
|
|
}
|
|
|
|
switch(soundVolume) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
res *= (soundVolume+1);
|
|
break;
|
|
case 4:
|
|
res >>= 2;
|
|
break;
|
|
case 5:
|
|
res >>= 1;
|
|
break;
|
|
}
|
|
|
|
if(res > 32767)
|
|
res = 32767;
|
|
if(res < -32768)
|
|
res = -32768;
|
|
|
|
if(soundReverse)
|
|
soundFinalWave[++soundBufferIndex] = res;
|
|
else
|
|
soundFinalWave[soundBufferIndex++] = res;
|
|
|
|
res = 0;
|
|
cgbRes = 0;
|
|
|
|
if(soundBalance & 1) {
|
|
cgbRes = ((s8)soundBuffer[0][soundIndex]);
|
|
}
|
|
if(soundBalance & 2) {
|
|
cgbRes += ((s8)soundBuffer[1][soundIndex]);
|
|
}
|
|
if(soundBalance & 4) {
|
|
cgbRes += ((s8)soundBuffer[2][soundIndex]);
|
|
}
|
|
if(soundBalance & 8) {
|
|
cgbRes += ((s8)soundBuffer[3][soundIndex]);
|
|
}
|
|
|
|
if((soundControl & 0x0100) && (soundEnableFlag & 0x100)){
|
|
if(!dsaRatio)
|
|
res = ((s8)soundBuffer[4][soundIndex])>>1;
|
|
else
|
|
res = ((s8)soundBuffer[4][soundIndex]);
|
|
}
|
|
|
|
if((soundControl & 0x1000) && (soundEnableFlag & 0x200)){
|
|
if(!dsbRatio)
|
|
res += ((s8)soundBuffer[5][soundIndex])>>1;
|
|
else
|
|
res += ((s8)soundBuffer[5][soundIndex]);
|
|
}
|
|
|
|
res = (res * 170);
|
|
cgbRes = (cgbRes * 52 * soundLevel1);
|
|
|
|
switch(ratio) {
|
|
case 0:
|
|
case 3: // prohibited, but 25%
|
|
cgbRes >>= 2;
|
|
break;
|
|
case 1:
|
|
cgbRes >>= 1;
|
|
break;
|
|
case 2:
|
|
break;
|
|
}
|
|
|
|
res += cgbRes;
|
|
|
|
if(soundEcho) {
|
|
res *= 2;
|
|
res += soundFilter[soundEchoIndex];
|
|
res /= 2;
|
|
soundFilter[soundEchoIndex++] = res;
|
|
|
|
if(soundEchoIndex >= 4000)
|
|
soundEchoIndex = 0;
|
|
}
|
|
|
|
if(soundLowPass) {
|
|
soundRight[4] = soundRight[3];
|
|
soundRight[3] = soundRight[2];
|
|
soundRight[2] = soundRight[1];
|
|
soundRight[1] = soundRight[0];
|
|
soundRight[0] = res;
|
|
res = (soundRight[4] + 2*soundRight[3] + 8*soundRight[2] + 2*soundRight[1] +
|
|
soundRight[0])/14;
|
|
}
|
|
|
|
switch(soundVolume) {
|
|
case 0:
|
|
case 1:
|
|
case 2:
|
|
case 3:
|
|
res *= (soundVolume+1);
|
|
break;
|
|
case 4:
|
|
res >>= 2;
|
|
break;
|
|
case 5:
|
|
res >>= 1;
|
|
break;
|
|
}
|
|
|
|
if(res > 32767)
|
|
res = 32767;
|
|
if(res < -32768)
|
|
res = -32768;
|
|
|
|
if(soundReverse)
|
|
soundFinalWave[-1+soundBufferIndex++] = res;
|
|
else
|
|
soundFinalWave[soundBufferIndex++] = res;
|
|
}
|
|
|
|
void soundTick()
|
|
{
|
|
if(systemSoundOn) {
|
|
if(soundMasterOn && !stopState) {
|
|
soundChannel1();
|
|
soundChannel2();
|
|
soundChannel3();
|
|
soundChannel4();
|
|
soundDirectSoundA();
|
|
soundDirectSoundB();
|
|
soundMix();
|
|
} else {
|
|
soundFinalWave[soundBufferIndex++] = 0;
|
|
soundFinalWave[soundBufferIndex++] = 0;
|
|
}
|
|
|
|
soundIndex++;
|
|
|
|
if(2*soundBufferIndex >= soundBufferLen) {
|
|
if(systemSoundOn) {
|
|
if(soundPaused) {
|
|
soundResume();
|
|
}
|
|
|
|
systemWriteDataToSoundBuffer();
|
|
}
|
|
soundIndex = 0;
|
|
soundBufferIndex = 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
void soundShutdown()
|
|
{
|
|
systemSoundShutdown();
|
|
}
|
|
|
|
void soundPause()
|
|
{
|
|
systemSoundPause();
|
|
soundPaused = 1;
|
|
}
|
|
|
|
void soundResume()
|
|
{
|
|
systemSoundResume();
|
|
soundPaused = 0;
|
|
}
|
|
|
|
void soundEnable(int channels)
|
|
{
|
|
int c = channels & 0x0f;
|
|
|
|
soundEnableFlag |= ((channels & 0x30f) |c | (c << 4));
|
|
if(ioMem)
|
|
soundBalance = (ioMem[NR51] & soundEnableFlag);
|
|
}
|
|
|
|
void soundDisable(int channels)
|
|
{
|
|
int c = channels & 0x0f;
|
|
|
|
soundEnableFlag &= (~((channels & 0x30f)|c|(c<<4)));
|
|
if(ioMem)
|
|
soundBalance = (ioMem[NR51] & soundEnableFlag);
|
|
}
|
|
|
|
int soundGetEnable()
|
|
{
|
|
return (soundEnableFlag & 0x30f);
|
|
}
|
|
|
|
void soundReset()
|
|
{
|
|
systemSoundReset();
|
|
|
|
soundPaused = 1;
|
|
soundPlay = 0;
|
|
SOUND_CLOCK_TICKS = soundQuality * USE_TICKS_AS;
|
|
soundTicks = SOUND_CLOCK_TICKS;
|
|
soundNextPosition = 0;
|
|
soundMasterOn = 1;
|
|
soundIndex = 0;
|
|
soundBufferIndex = 0;
|
|
soundLevel1 = 7;
|
|
soundLevel2 = 7;
|
|
|
|
sound1On = 0;
|
|
sound1ATL = 0;
|
|
sound1Skip = 0;
|
|
sound1Index = 0;
|
|
sound1Continue = 0;
|
|
sound1EnvelopeVolume = 0;
|
|
sound1EnvelopeATL = 0;
|
|
sound1EnvelopeUpDown = 0;
|
|
sound1EnvelopeATLReload = 0;
|
|
sound1SweepATL = 0;
|
|
sound1SweepATLReload = 0;
|
|
sound1SweepSteps = 0;
|
|
sound1SweepUpDown = 0;
|
|
sound1SweepStep = 0;
|
|
sound1Wave = soundWavePattern[2];
|
|
|
|
sound2On = 0;
|
|
sound2ATL = 0;
|
|
sound2Skip = 0;
|
|
sound2Index = 0;
|
|
sound2Continue = 0;
|
|
sound2EnvelopeVolume = 0;
|
|
sound2EnvelopeATL = 0;
|
|
sound2EnvelopeUpDown = 0;
|
|
sound2EnvelopeATLReload = 0;
|
|
sound2Wave = soundWavePattern[2];
|
|
|
|
sound3On = 0;
|
|
sound3ATL = 0;
|
|
sound3Skip = 0;
|
|
sound3Index = 0;
|
|
sound3Continue = 0;
|
|
sound3OutputLevel = 0;
|
|
sound3Last = 0;
|
|
sound3Bank = 0;
|
|
sound3DataSize = 0;
|
|
sound3ForcedOutput = 0;
|
|
|
|
sound4On = 0;
|
|
sound4Clock = 0;
|
|
sound4ATL = 0;
|
|
sound4Skip = 0;
|
|
sound4Index = 0;
|
|
sound4ShiftRight = 0x7f;
|
|
sound4NSteps = 0;
|
|
sound4CountDown = 0;
|
|
sound4Continue = 0;
|
|
sound4EnvelopeVolume = 0;
|
|
sound4EnvelopeATL = 0;
|
|
sound4EnvelopeUpDown = 0;
|
|
sound4EnvelopeATLReload = 0;
|
|
|
|
sound1On = 0;
|
|
sound2On = 0;
|
|
sound3On = 0;
|
|
sound4On = 0;
|
|
|
|
int addr = 0x90;
|
|
|
|
while(addr < 0xA0) {
|
|
ioMem[addr++] = 0x00;
|
|
ioMem[addr++] = 0xff;
|
|
}
|
|
|
|
addr = 0;
|
|
while(addr < 0x20) {
|
|
sound3WaveRam[addr++] = 0x00;
|
|
sound3WaveRam[addr++] = 0xff;
|
|
}
|
|
|
|
memset(soundFinalWave, 0, soundBufferLen);
|
|
|
|
memset(soundFilter, 0, sizeof(soundFilter));
|
|
soundEchoIndex = 0;
|
|
}
|
|
|
|
bool soundInit()
|
|
{
|
|
if(systemSoundInit()) {
|
|
memset(soundBuffer[0], 0, 735*2);
|
|
memset(soundBuffer[1], 0, 735*2);
|
|
memset(soundBuffer[2], 0, 735*2);
|
|
memset(soundBuffer[3], 0, 735*2);
|
|
|
|
memset(soundFinalWave, 0, soundBufferLen);
|
|
|
|
soundPaused = true;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void soundSetQuality(int quality)
|
|
{
|
|
if(soundQuality != quality && systemCanChangeSoundQuality()) {
|
|
if(!soundOffFlag)
|
|
soundShutdown();
|
|
soundQuality = quality;
|
|
soundNextPosition = 0;
|
|
if(!soundOffFlag)
|
|
soundInit();
|
|
SOUND_CLOCK_TICKS = USE_TICKS_AS * soundQuality;
|
|
soundIndex = 0;
|
|
soundBufferIndex = 0;
|
|
} else if(soundQuality != quality) {
|
|
soundNextPosition = 0;
|
|
SOUND_CLOCK_TICKS = USE_TICKS_AS * soundQuality;
|
|
soundIndex = 0;
|
|
soundBufferIndex = 0;
|
|
}
|
|
}
|
|
|
|
void soundSaveGame(gzFile gzFile)
|
|
{
|
|
utilWriteData(gzFile, soundSaveStruct);
|
|
utilWriteData(gzFile, soundSaveStructV2);
|
|
|
|
utilGzWrite(gzFile, &soundQuality, sizeof(int));
|
|
}
|
|
|
|
void soundReadGame(gzFile gzFile, int version)
|
|
{
|
|
utilReadData(gzFile, soundSaveStruct);
|
|
if(version >= SAVE_GAME_VERSION_3) {
|
|
utilReadData(gzFile, soundSaveStructV2);
|
|
} else {
|
|
sound3Bank = (ioMem[NR30] >> 6) & 1;
|
|
sound3DataSize = (ioMem[NR30] >> 5) & 1;
|
|
sound3ForcedOutput = (ioMem[NR32] >> 7) & 1;
|
|
// nothing better to do here...
|
|
memcpy(&sound3WaveRam[0x00], &ioMem[0x90], 0x10);
|
|
memcpy(&sound3WaveRam[0x10], &ioMem[0x90], 0x10);
|
|
}
|
|
soundBufferIndex = soundIndex * 2;
|
|
|
|
int quality = 1;
|
|
utilGzRead(gzFile, &quality, sizeof(int));
|
|
soundSetQuality(quality);
|
|
|
|
sound1Wave = soundWavePattern[ioMem[NR11] >> 6];
|
|
sound2Wave = soundWavePattern[ioMem[NR21] >> 6];
|
|
}
|