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snd_fx.cpp
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2394 lines (2252 loc) · 63.8 KB
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/*
* This source code is public domain.
*
* Authors: Olivier Lapicque <[email protected]>
*/
#include "stdafx.h"
#include <stdlib.h>
#include "sndfile.h"
#include "tables.h"
#ifdef _MSC_VER
#pragma warning(disable:4244)
#endif
////////////////////////////////////////////////////////////
// Length
DWORD CSoundFile::GetLength(BOOL bAdjust, BOOL bTotal)
//----------------------------------------------------
{
UINT dwElapsedTime=0, nRow=0, nCurrentPattern=0, nNextPattern=0, nPattern=0;
UINT nMusicSpeed=m_nDefaultSpeed, nMusicTempo=m_nDefaultTempo, nNextRow=0;
UINT nMaxRow = 0, nMaxPattern = 0, nNextStartRow = 0;
LONG nGlbVol = m_nDefaultGlobalVolume, nOldGlbVolSlide = 0;
BYTE instr[MAX_CHANNELS];
BYTE notes[MAX_CHANNELS];
BYTE vols[MAX_CHANNELS];
BYTE oldparam[MAX_CHANNELS];
BYTE chnvols[MAX_CHANNELS];
DWORD patloop[MAX_CHANNELS];
memset(instr, 0, sizeof(instr));
memset(notes, 0, sizeof(notes));
memset(vols, 0xFF, sizeof(vols));
memset(patloop, 0, sizeof(patloop));
memset(oldparam, 0, sizeof(oldparam));
memset(chnvols, 64, sizeof(chnvols));
for (UINT icv=0; icv<m_nChannels; icv++)
chnvols[icv] = ChnSettings[icv].nVolume;
nMaxRow = m_nNextRow;
nMaxPattern = m_nNextPattern;
for (;;)
{
UINT nSpeedCount = 0;
nRow = nNextRow;
nCurrentPattern = nNextPattern;
// Check if pattern is valid
nPattern = (nCurrentPattern < MAX_ORDERS) ? Order[nCurrentPattern] : 0xFF;
while (nPattern >= MAX_PATTERNS)
{
// End of song ?
if ((nPattern == 0xFF) || (nCurrentPattern >= MAX_ORDERS))
{
goto EndMod;
} else
{
nCurrentPattern++;
nPattern = (nCurrentPattern < MAX_ORDERS) ? Order[nCurrentPattern] : 0xFF;
}
nNextPattern = nCurrentPattern;
}
// Weird stuff?
if ((nPattern >= MAX_PATTERNS) || (!Patterns[nPattern]) ||
PatternSize[nPattern] == 0) break;
// Should never happen
if (nRow >= PatternSize[nPattern]) nRow = 0;
// Update next position
nNextRow = nRow + 1;
if (nNextRow >= PatternSize[nPattern])
{
nNextPattern = nCurrentPattern + 1;
nNextRow = nNextStartRow;
nNextStartRow = 0;
}
if (!nRow)
{
for (UINT ipck=0; ipck<m_nChannels; ipck++) patloop[ipck] = dwElapsedTime;
}
if (!bTotal)
{
if ((nCurrentPattern > nMaxPattern) || ((nCurrentPattern == nMaxPattern) && (nRow >= nMaxRow)))
{
if (bAdjust)
{
m_nMusicSpeed = nMusicSpeed;
m_nMusicTempo = nMusicTempo;
}
break;
}
}
MODCHANNEL *pChn = Chn;
MODCOMMAND *p = Patterns[nPattern] + nRow * m_nChannels;
for (UINT nChn=0; nChn<m_nChannels; p++,pChn++, nChn++) if (*((DWORD *)p))
{
UINT command = p->command;
UINT param = p->param;
UINT note = p->note;
if (p->instr) { instr[nChn] = p->instr; notes[nChn] = 0; vols[nChn] = 0xFF; }
if ((note) && (note <= NOTE_MAX)) notes[nChn] = note;
if (p->volcmd == VOLCMD_VOLUME) { vols[nChn] = p->vol; }
if (command) switch (command)
{
// Position Jump
case CMD_POSITIONJUMP:
if (param <= nCurrentPattern) goto EndMod;
nNextPattern = param;
nNextRow = 0;
nNextStartRow = 0;
if (bAdjust)
{
pChn->nPatternLoopCount = 0;
pChn->nPatternLoop = 0;
}
break;
// Pattern Break
case CMD_PATTERNBREAK:
nNextRow = param;
nNextPattern = nCurrentPattern + 1;
nNextStartRow = 0;
if (bAdjust)
{
pChn->nPatternLoopCount = 0;
pChn->nPatternLoop = 0;
}
break;
// Set Speed
case CMD_SPEED:
if (!param) break;
if ((param <= 0x20) || (m_nType != MOD_TYPE_MOD))
{
if (param < 128) nMusicSpeed = param;
}
break;
// Set Tempo
case CMD_TEMPO:
if ((bAdjust) && (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT)))
{
if (param) pChn->nOldTempo = param; else param = pChn->nOldTempo;
}
if (param >= 0x20) nMusicTempo = param; else
// Tempo Slide
if ((param & 0xF0) == 0x10)
{
nMusicTempo += param & 0x0F;
if (nMusicTempo > 255) nMusicTempo = 255;
} else
{
nMusicTempo -= param & 0x0F;
if (nMusicTempo < 32) nMusicTempo = 32;
}
break;
// Pattern Delay
case CMD_S3MCMDEX:
if ((param & 0xF0) == 0x60) { nSpeedCount = param & 0x0F; break; } else
if ((param & 0xF0) == 0xB0) { param &= 0x0F; param |= 0x60; }
case CMD_MODCMDEX:
if ((param & 0xF0) == 0xE0) nSpeedCount = (param & 0x0F) * nMusicSpeed; else
if ((param & 0xF0) == 0x60)
{
if (param & 0x0F) dwElapsedTime += (dwElapsedTime - patloop[nChn]) * (param & 0x0F);
else {
patloop[nChn] = dwElapsedTime;
if (m_nType & MOD_TYPE_XM) nNextStartRow = nRow;
}
}
break;
}
if (!bAdjust) continue;
switch(command)
{
// Portamento Up/Down
case CMD_PORTAMENTOUP:
case CMD_PORTAMENTODOWN:
if (param) pChn->nOldPortaUpDown = param;
break;
// Tone-Portamento
case CMD_TONEPORTAMENTO:
if (param) pChn->nPortamentoSlide = param << 2;
break;
// Offset
case CMD_OFFSET:
if (param) pChn->nOldOffset = param;
break;
// Volume Slide
case CMD_VOLUMESLIDE:
case CMD_TONEPORTAVOL:
case CMD_VIBRATOVOL:
if (param) pChn->nOldVolumeSlide = param;
break;
// Set Volume
case CMD_VOLUME:
vols[nChn] = param;
break;
// Global Volume
case CMD_GLOBALVOLUME:
if (!(m_nType & (MOD_TYPE_IT))) param <<= 1;
if (param > 128) param = 128;
nGlbVol = param << 1;
break;
// Global Volume Slide
case CMD_GLOBALVOLSLIDE:
if (param) nOldGlbVolSlide = param; else param = nOldGlbVolSlide;
if (((param & 0x0F) == 0x0F) && (param & 0xF0))
{
param >>= 4;
if (m_nType != MOD_TYPE_IT) param <<= 1;
nGlbVol += param << 1;
} else
if (((param & 0xF0) == 0xF0) && (param & 0x0F))
{
param = (param & 0x0F) << 1;
if (m_nType != MOD_TYPE_IT) param <<= 1;
nGlbVol -= param;
} else
if (param & 0xF0)
{
param >>= 4;
param <<= 1;
if (m_nType != MOD_TYPE_IT) param <<= 1;
nGlbVol += param * nMusicSpeed;
} else
{
param = (param & 0x0F) << 1;
if (m_nType != MOD_TYPE_IT) param <<= 1;
nGlbVol -= param * nMusicSpeed;
}
if (nGlbVol < 0) nGlbVol = 0;
if (nGlbVol > 256) nGlbVol = 256;
break;
case CMD_CHANNELVOLUME:
if (param <= 64) chnvols[nChn] = param;
break;
case CMD_CHANNELVOLSLIDE:
if (param) oldparam[nChn] = param; else param = oldparam[nChn];
pChn->nOldChnVolSlide = param;
if (((param & 0x0F) == 0x0F) && (param & 0xF0))
{
param = (param >> 4) + chnvols[nChn];
} else
if (((param & 0xF0) == 0xF0) && (param & 0x0F))
{
if (chnvols[nChn] > (int)(param & 0x0F)) param = chnvols[nChn] - (param & 0x0F);
else param = 0;
} else
if (param & 0x0F)
{
param = (param & 0x0F) * nMusicSpeed;
param = (chnvols[nChn] > param) ? chnvols[nChn] - param : 0;
} else param = ((param & 0xF0) >> 4) * nMusicSpeed + chnvols[nChn];
if (param > 64) param = 64;
chnvols[nChn] = param;
break;
}
}
nSpeedCount += nMusicSpeed;
dwElapsedTime += (2500 * nSpeedCount) / nMusicTempo;
}
EndMod:
if ((bAdjust) && (!bTotal))
{
m_nGlobalVolume = nGlbVol;
m_nOldGlbVolSlide = nOldGlbVolSlide;
for (UINT n=0; n<m_nChannels; n++)
{
Chn[n].nGlobalVol = chnvols[n];
if (notes[n]) Chn[n].nNewNote = notes[n];
if (instr[n]) Chn[n].nNewIns = instr[n];
if (vols[n] != 0xFF)
{
if (vols[n] > 64) vols[n] = 64;
Chn[n].nVolume = vols[n] << 2;
}
}
}
return (dwElapsedTime+500) / 1000;
}
//////////////////////////////////////////////////////////////////////////////////////////////////
// Effects
void CSoundFile::InstrumentChange(MODCHANNEL *pChn, UINT instr, BOOL bPorta, BOOL bUpdVol, BOOL bResetEnv)
//--------------------------------------------------------------------------------------------------------
{
BOOL bInstrumentChanged = FALSE;
if (instr >= MAX_INSTRUMENTS) return;
INSTRUMENTHEADER *penv = Headers[instr];
MODINSTRUMENT *psmp = &Ins[instr];
UINT note = pChn->nNewNote;
if ((penv) && (note) && (note <= 128))
{
if (penv->NoteMap[note-1] >= 0xFE) return;
UINT n = penv->Keyboard[note-1];
psmp = ((n) && (n < MAX_SAMPLES)) ? &Ins[n] : NULL;
} else
if (m_nInstruments)
{
if (note >= 0xFE) return;
psmp = NULL;
}
// Update Volume
if (bUpdVol) pChn->nVolume = (psmp) ? psmp->nVolume : 0;
// bInstrumentChanged is used for IT carry-on env option
if (penv != pChn->pHeader)
{
bInstrumentChanged = TRUE;
pChn->pHeader = penv;
} else
{
// Special XM hack
if ((bPorta) && (m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2)) && (penv)
&& (pChn->pInstrument) && (psmp != pChn->pInstrument))
{
// FT2 doesn't change the sample in this case,
// but still uses the sample info from the old one (bug?)
return;
}
}
// Instrument adjust
pChn->nNewIns = 0;
if (psmp)
{
if (penv)
{
pChn->nInsVol = (psmp->nGlobalVol * penv->nGlobalVol) >> 6;
if (penv->dwFlags & ENV_SETPANNING) pChn->nPan = penv->nPan;
pChn->nNNA = penv->nNNA;
} else
{
pChn->nInsVol = psmp->nGlobalVol;
}
if (psmp->uFlags & CHN_PANNING) pChn->nPan = psmp->nPan;
}
// Reset envelopes
if (bResetEnv)
{
if ((!bPorta) || (!(m_nType & MOD_TYPE_IT)) || (m_dwSongFlags & SONG_ITCOMPATMODE)
|| (!pChn->nLength) || ((pChn->dwFlags & CHN_NOTEFADE) && (!pChn->nFadeOutVol)))
{
pChn->dwFlags |= CHN_FASTVOLRAMP;
if ((m_nType & MOD_TYPE_IT) && (!bInstrumentChanged) && (penv) && (!(pChn->dwFlags & (CHN_KEYOFF|CHN_NOTEFADE))))
{
if (!(penv->dwFlags & ENV_VOLCARRY)) pChn->nVolEnvPosition = 0;
if (!(penv->dwFlags & ENV_PANCARRY)) pChn->nPanEnvPosition = 0;
if (!(penv->dwFlags & ENV_PITCHCARRY)) pChn->nPitchEnvPosition = 0;
} else
{
pChn->nVolEnvPosition = 0;
pChn->nPanEnvPosition = 0;
pChn->nPitchEnvPosition = 0;
}
pChn->nAutoVibDepth = 0;
pChn->nAutoVibPos = 0;
} else
if ((penv) && (!(penv->dwFlags & ENV_VOLUME)))
{
pChn->nVolEnvPosition = 0;
pChn->nAutoVibDepth = 0;
pChn->nAutoVibPos = 0;
}
}
// Invalid sample ?
if (!psmp)
{
pChn->pInstrument = NULL;
pChn->nInsVol = 0;
return;
}
// Tone-Portamento doesn't reset the pingpong direction flag
if ((bPorta) && (psmp == pChn->pInstrument))
{
if (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT)) return;
pChn->dwFlags &= ~(CHN_KEYOFF|CHN_NOTEFADE);
pChn->dwFlags = (pChn->dwFlags & (0xFFFFFF00 | CHN_PINGPONGFLAG)) | (psmp->uFlags);
} else
{
pChn->dwFlags &= ~(CHN_KEYOFF|CHN_NOTEFADE|CHN_VOLENV|CHN_PANENV|CHN_PITCHENV);
pChn->dwFlags = (pChn->dwFlags & 0xFFFFFF00) | (psmp->uFlags);
if (penv)
{
if (penv->dwFlags & ENV_VOLUME) pChn->dwFlags |= CHN_VOLENV;
if (penv->dwFlags & ENV_PANNING) pChn->dwFlags |= CHN_PANENV;
if (penv->dwFlags & ENV_PITCH) pChn->dwFlags |= CHN_PITCHENV;
if ((penv->dwFlags & ENV_PITCH) && (penv->dwFlags & ENV_FILTER))
{
if (!pChn->nCutOff) pChn->nCutOff = 0x7F;
}
if (penv->nIFC & 0x80) pChn->nCutOff = penv->nIFC & 0x7F;
if (penv->nIFR & 0x80) pChn->nResonance = penv->nIFR & 0x7F;
}
pChn->nVolSwing = pChn->nPanSwing = 0;
}
pChn->pInstrument = psmp;
pChn->nLength = psmp->nLength;
pChn->nLoopStart = psmp->nLoopStart;
pChn->nLoopEnd = psmp->nLoopEnd;
pChn->nC4Speed = psmp->nC4Speed;
pChn->pSample = psmp->pSample;
pChn->nTranspose = psmp->RelativeTone;
pChn->nFineTune = psmp->nFineTune;
if (pChn->dwFlags & CHN_SUSTAINLOOP)
{
pChn->nLoopStart = psmp->nSustainStart;
pChn->nLoopEnd = psmp->nSustainEnd;
pChn->dwFlags |= CHN_LOOP;
if (pChn->dwFlags & CHN_PINGPONGSUSTAIN) pChn->dwFlags |= CHN_PINGPONGLOOP;
}
if ((pChn->dwFlags & CHN_LOOP) && (pChn->nLoopEnd < pChn->nLength)) pChn->nLength = pChn->nLoopEnd;
}
void CSoundFile::NoteChange(UINT nChn, int note, BOOL bPorta, BOOL bResetEnv)
//---------------------------------------------------------------------------
{
if (note < 1) return;
MODCHANNEL * const pChn = &Chn[nChn];
MODINSTRUMENT *pins = pChn->pInstrument;
INSTRUMENTHEADER *penv = pChn->pHeader;
if ((penv) && (note <= 0x80))
{
UINT n = penv->Keyboard[note - 1];
if ((n) && (n < MAX_SAMPLES)) pins = &Ins[n];
note = penv->NoteMap[note-1];
}
// Key Off
if (note >= 0x80) // 0xFE or invalid note => key off
{
// Key Off
if (note < 0xFD && m_nType == MOD_TYPE_IT)
{
if (m_nInstruments)
pChn->dwFlags |= CHN_NOTEFADE;
} else
{
KeyOff(nChn);
}
// Note Cut
if (note == 0xFE)
{
pChn->dwFlags |= (CHN_NOTEFADE|CHN_FASTVOLRAMP);
if ((!(m_nType & MOD_TYPE_IT)) || (m_nInstruments)) pChn->nVolume = 0;
pChn->nFadeOutVol = 0;
}
return;
}
if (!pins) return;
if ((!bPorta) && (m_nType & (MOD_TYPE_XM|MOD_TYPE_MED|MOD_TYPE_MT2)))
{
pChn->nTranspose = pins->RelativeTone;
pChn->nFineTune = pins->nFineTune;
}
if (m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2|MOD_TYPE_MED)) note += pChn->nTranspose;
if (note < 1) note = 1;
if (note > 132) note = 132;
pChn->nNote = note;
if ((!bPorta) || (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT))) pChn->nNewIns = 0;
UINT period = GetPeriodFromNote(note, pChn->nFineTune, pChn->nC4Speed);
if (period)
{
if ((!bPorta) || (!pChn->nPeriod)) pChn->nPeriod = period;
pChn->nPortamentoDest = period;
if ((!bPorta) || ((!pChn->nLength) && (!(m_nType & MOD_TYPE_S3M))))
{
pChn->pInstrument = pins;
pChn->pSample = pins->pSample;
pChn->nLength = pins->nLength;
pChn->nLoopEnd = pins->nLength;
pChn->nLoopStart = 0;
pChn->dwFlags = (pChn->dwFlags & 0xFFFFFF00) | (pins->uFlags);
if (pChn->dwFlags & CHN_SUSTAINLOOP)
{
pChn->nLoopStart = pins->nSustainStart;
pChn->nLoopEnd = pins->nSustainEnd;
pChn->dwFlags &= ~CHN_PINGPONGLOOP;
pChn->dwFlags |= CHN_LOOP;
if (pChn->dwFlags & CHN_PINGPONGSUSTAIN) pChn->dwFlags |= CHN_PINGPONGLOOP;
if (pChn->nLength > pChn->nLoopEnd) pChn->nLength = pChn->nLoopEnd;
} else
if (pChn->dwFlags & CHN_LOOP)
{
pChn->nLoopStart = pins->nLoopStart;
pChn->nLoopEnd = pins->nLoopEnd;
if (pChn->nLength > pChn->nLoopEnd) pChn->nLength = pChn->nLoopEnd;
}
pChn->nPos = 0;
pChn->nPosLo = 0;
if (pChn->nVibratoType < 4) pChn->nVibratoPos = ((m_nType & MOD_TYPE_IT) && (!(m_dwSongFlags & SONG_ITOLDEFFECTS))) ? 0x10 : 0;
if (pChn->nTremoloType < 4) pChn->nTremoloPos = 0;
}
if (pChn->nPos >= pChn->nLength) pChn->nPos = pChn->nLoopStart;
} else bPorta = FALSE;
if ((!bPorta) || (!(m_nType & MOD_TYPE_IT))
|| ((pChn->dwFlags & CHN_NOTEFADE) && (!pChn->nFadeOutVol))
|| ((m_dwSongFlags & SONG_ITCOMPATMODE) && (pChn->nRowInstr)))
{
if ((m_nType & MOD_TYPE_IT) && (pChn->dwFlags & CHN_NOTEFADE) && (!pChn->nFadeOutVol))
{
pChn->nVolEnvPosition = 0;
pChn->nPanEnvPosition = 0;
pChn->nPitchEnvPosition = 0;
pChn->nAutoVibDepth = 0;
pChn->nAutoVibPos = 0;
pChn->dwFlags &= ~CHN_NOTEFADE;
pChn->nFadeOutVol = 65536;
}
if ((!bPorta) || (!(m_dwSongFlags & SONG_ITCOMPATMODE)) || (pChn->nRowInstr))
{
if ((!(m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2))) || (pChn->nRowInstr))
{
pChn->dwFlags &= ~CHN_NOTEFADE;
pChn->nFadeOutVol = 65536;
}
}
}
pChn->dwFlags &= ~(CHN_EXTRALOUD|CHN_KEYOFF);
// Enable Ramping
if (!bPorta)
{
pChn->nVUMeter = 0x100;
pChn->nLeftVU = pChn->nRightVU = 0xFF;
pChn->dwFlags &= ~CHN_FILTER;
pChn->dwFlags |= CHN_FASTVOLRAMP;
pChn->nRetrigCount = 0;
pChn->nTremorCount = 0;
if (bResetEnv)
{
pChn->nVolSwing = pChn->nPanSwing = 0;
if (penv)
{
if (!(penv->dwFlags & ENV_VOLCARRY)) pChn->nVolEnvPosition = 0;
if (!(penv->dwFlags & ENV_PANCARRY)) pChn->nPanEnvPosition = 0;
if (!(penv->dwFlags & ENV_PITCHCARRY)) pChn->nPitchEnvPosition = 0;
if (m_nType & MOD_TYPE_IT)
{
// Volume Swing
if (penv->nVolSwing)
{
int d = ((LONG)penv->nVolSwing*(LONG)((rand() & 0xFF) - 0x7F)) / 128;
pChn->nVolSwing = (signed short)((d * pChn->nVolume + 1)/128);
}
// Pan Swing
if (penv->nPanSwing)
{
int d = ((LONG)penv->nPanSwing*(LONG)((rand() & 0xFF) - 0x7F)) / 128;
pChn->nPanSwing = (signed short)d;
}
}
}
pChn->nAutoVibDepth = 0;
pChn->nAutoVibPos = 0;
}
pChn->nLeftVol = pChn->nRightVol = 0;
BOOL bFlt = (m_dwSongFlags & SONG_MPTFILTERMODE) ? FALSE : TRUE;
// Setup Initial Filter for this note
if (penv)
{
if (penv->nIFR & 0x80) { pChn->nResonance = penv->nIFR & 0x7F; bFlt = TRUE; }
if (penv->nIFC & 0x80) { pChn->nCutOff = penv->nIFC & 0x7F; bFlt = TRUE; }
} else
{
pChn->nVolSwing = pChn->nPanSwing = 0;
}
#ifndef NO_FILTER
if ((pChn->nCutOff < 0x7F) && (bFlt)) SetupChannelFilter(pChn, TRUE);
#endif // NO_FILTER
}
}
UINT CSoundFile::GetNNAChannel(UINT nChn) const
//---------------------------------------------
{
const MODCHANNEL *pChn = &Chn[nChn];
// Check for empty channel
const MODCHANNEL *pi = &Chn[m_nChannels];
for (UINT i=m_nChannels; i<MAX_CHANNELS; i++, pi++) if (!pi->nLength) return i;
if (!pChn->nFadeOutVol) return 0;
// All channels are used: check for lowest volume
UINT result = 0;
DWORD vol = 64*65536; // 25%
DWORD envpos = 0xFFFFFF;
const MODCHANNEL *pj = &Chn[m_nChannels];
for (UINT j=m_nChannels; j<MAX_CHANNELS; j++, pj++)
{
if (!pj->nFadeOutVol) return j;
DWORD v = pj->nVolume;
if (pj->dwFlags & CHN_NOTEFADE)
v = v * pj->nFadeOutVol;
else
v <<= 16;
if (pj->dwFlags & CHN_LOOP) v >>= 1;
if ((v < vol) || ((v == vol) && (pj->nVolEnvPosition > envpos)))
{
envpos = pj->nVolEnvPosition;
vol = v;
result = j;
}
}
return result;
}
void CSoundFile::CheckNNA(UINT nChn, UINT instr, int note, BOOL bForceCut)
//------------------------------------------------------------------------
{
MODCHANNEL *pChn = &Chn[nChn];
INSTRUMENTHEADER *penv = pChn->pHeader, *pHeader = 0;
signed char *pSample;
if (note > 0x80) note = 0;
if (note < 1) return;
// Always NNA cut - using
if ((!(m_nType & (MOD_TYPE_IT|MOD_TYPE_MT2))) || (!m_nInstruments) || (bForceCut))
{
if ((m_dwSongFlags & SONG_CPUVERYHIGH)
|| (!pChn->nLength) || (pChn->dwFlags & CHN_MUTE)
|| ((!pChn->nLeftVol) && (!pChn->nRightVol))) return;
UINT n = GetNNAChannel(nChn);
if (!n) return;
MODCHANNEL *p = &Chn[n];
// Copy Channel
*p = *pChn;
p->dwFlags &= ~(CHN_VIBRATO|CHN_TREMOLO|CHN_PANBRELLO|CHN_MUTE|CHN_PORTAMENTO);
p->nMasterChn = nChn+1;
p->nCommand = 0;
// Cut the note
p->nFadeOutVol = 0;
p->dwFlags |= (CHN_NOTEFADE|CHN_FASTVOLRAMP);
// Stop this channel
pChn->nLength = pChn->nPos = pChn->nPosLo = 0;
pChn->nROfs = pChn->nLOfs = 0;
pChn->nLeftVol = pChn->nRightVol = 0;
return;
}
if (instr >= MAX_INSTRUMENTS) instr = 0;
pSample = pChn->pSample;
pHeader = pChn->pHeader;
if ((instr) && (note))
{
pHeader = Headers[instr];
if (pHeader)
{
UINT n = 0;
if (note <= 0x80)
{
n = pHeader->Keyboard[note-1];
note = pHeader->NoteMap[note-1];
if ((n) && (n < MAX_SAMPLES)) pSample = Ins[n].pSample;
}
} else pSample = NULL;
}
if (!penv) return;
MODCHANNEL *p = pChn;
for (UINT i=nChn; i<MAX_CHANNELS; p++, i++)
if ((i >= m_nChannels) || (p == pChn))
{
if (((p->nMasterChn == nChn+1) || (p == pChn)) && (p->pHeader))
{
BOOL bOk = FALSE;
// Duplicate Check Type
switch(p->pHeader->nDCT)
{
// Note
case DCT_NOTE:
if ((note) && (p->nNote == note) && (pHeader == p->pHeader)) bOk = TRUE;
break;
// Sample
case DCT_SAMPLE:
if ((pSample) && (pSample == p->pSample)) bOk = TRUE;
break;
// Instrument
case DCT_INSTRUMENT:
if (pHeader == p->pHeader) bOk = TRUE;
break;
}
// Duplicate Note Action
if (bOk)
{
switch(p->pHeader->nDNA)
{
// Cut
case DNA_NOTECUT:
KeyOff(i);
p->nVolume = 0;
break;
// Note Off
case DNA_NOTEOFF:
KeyOff(i);
break;
// Note Fade
case DNA_NOTEFADE:
p->dwFlags |= CHN_NOTEFADE;
break;
}
if (!p->nVolume)
{
p->nFadeOutVol = 0;
p->dwFlags |= (CHN_NOTEFADE|CHN_FASTVOLRAMP);
}
}
}
}
if (pChn->dwFlags & CHN_MUTE) return;
// New Note Action
if ((pChn->nVolume) && (pChn->nLength))
{
UINT n = GetNNAChannel(nChn);
if (n)
{
p = &Chn[n];
// Copy Channel
*p = *pChn;
p->dwFlags &= ~(CHN_VIBRATO|CHN_TREMOLO|CHN_PANBRELLO|CHN_MUTE|CHN_PORTAMENTO);
p->nMasterChn = nChn+1;
p->nCommand = 0;
// Key Off the note
switch(pChn->nNNA)
{
case NNA_NOTEOFF: KeyOff(n); break;
case NNA_NOTECUT:
p->nFadeOutVol = 0;
case NNA_NOTEFADE: p->dwFlags |= CHN_NOTEFADE; break;
}
if (!p->nVolume)
{
p->nFadeOutVol = 0;
p->dwFlags |= (CHN_NOTEFADE|CHN_FASTVOLRAMP);
}
// Stop this channel
pChn->nLength = pChn->nPos = pChn->nPosLo = 0;
pChn->nROfs = pChn->nLOfs = 0;
}
}
}
BOOL CSoundFile::ProcessEffects()
//-------------------------------
{
MODCHANNEL *pChn = Chn;
int nBreakRow = -1, nPosJump = -1, nPatLoopRow = -1;
for (UINT nChn=0; nChn<m_nChannels; nChn++, pChn++)
{
UINT instr = pChn->nRowInstr;
UINT volcmd = pChn->nRowVolCmd;
UINT vol = pChn->nRowVolume;
UINT cmd = pChn->nRowCommand;
UINT param = pChn->nRowParam;
bool bPorta = ((cmd != CMD_TONEPORTAMENTO) && (cmd != CMD_TONEPORTAVOL) && (volcmd != VOLCMD_TONEPORTAMENTO)) ? FALSE : TRUE;
UINT nStartTick = 0;
pChn->dwFlags &= ~CHN_FASTVOLRAMP;
// Process special effects (note delay, pattern delay, pattern loop)
if ((cmd == CMD_MODCMDEX) || (cmd == CMD_S3MCMDEX))
{
if ((!param) && (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT))) param = pChn->nOldCmdEx; else pChn->nOldCmdEx = param;
// Note Delay ?
if ((param & 0xF0) == 0xD0)
{
nStartTick = param & 0x0F;
} else
if (!m_nTickCount)
{
// Pattern Loop ?
if ((((param & 0xF0) == 0x60) && (cmd == CMD_MODCMDEX))
|| (((param & 0xF0) == 0xB0) && (cmd == CMD_S3MCMDEX)))
{
int nloop = PatternLoop(pChn, param & 0x0F);
if (nloop >= 0) nPatLoopRow = nloop;
} else
// Pattern Delay
if ((param & 0xF0) == 0xE0)
{
m_nPatternDelay = param & 0x0F;
}
}
}
// Handles note/instrument/volume changes
if (m_nTickCount == nStartTick) // can be delayed by a note delay effect
{
UINT note = pChn->nRowNote;
if (instr) pChn->nNewIns = instr;
// XM: Key-Off + Sample == Note Cut
if (m_nType & (MOD_TYPE_MOD|MOD_TYPE_XM|MOD_TYPE_MT2))
{
if ((note == 0xFF) && ((!pChn->pHeader) || (!(pChn->pHeader->dwFlags & ENV_VOLUME))))
{
pChn->dwFlags |= CHN_FASTVOLRAMP;
pChn->nVolume = 0;
note = instr = 0;
}
}
if ((!note) && (instr))
{
if (m_nInstruments)
{
if (pChn->pInstrument) pChn->nVolume = pChn->pInstrument->nVolume;
if (m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2))
{
pChn->dwFlags |= CHN_FASTVOLRAMP;
pChn->nVolEnvPosition = 0;
pChn->nPanEnvPosition = 0;
pChn->nPitchEnvPosition = 0;
pChn->nAutoVibDepth = 0;
pChn->nAutoVibPos = 0;
pChn->dwFlags &= ~CHN_NOTEFADE;
pChn->nFadeOutVol = 65536;
}
} else
{
if (instr < MAX_SAMPLES) pChn->nVolume = Ins[instr].nVolume;
}
if (!(m_nType & MOD_TYPE_IT)) instr = 0;
}
// Invalid Instrument ?
if (instr >= MAX_INSTRUMENTS) instr = 0;
// Note Cut/Off => ignore instrument
if (note >= 0xFE) instr = 0;
if ((note) && (note <= 128)) pChn->nNewNote = note;
// New Note Action ?
if ((note) && (note <= 128) && (!bPorta))
{
CheckNNA(nChn, instr, note, FALSE);
}
// Instrument Change ?
if (instr)
{
MODINSTRUMENT *psmp = pChn->pInstrument;
InstrumentChange(pChn, instr, bPorta, TRUE);
pChn->nNewIns = 0;
// Special IT case: portamento+note causes sample change -> ignore portamento
if ((m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT))
&& (psmp != pChn->pInstrument) && (note) && (note < 0x80))
{
bPorta = FALSE;
}
}
// New Note ?
if (note)
{
if ((!instr) && (pChn->nNewIns) && (note < 0x80))
{
InstrumentChange(pChn, pChn->nNewIns, bPorta, FALSE, (m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2)) ? FALSE : TRUE);
pChn->nNewIns = 0;
}
NoteChange(nChn, note, bPorta, (m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2)) ? FALSE : TRUE);
if ((bPorta) && (m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2)) && (instr))
{
pChn->dwFlags |= CHN_FASTVOLRAMP;
pChn->nVolEnvPosition = 0;
pChn->nPanEnvPosition = 0;
pChn->nPitchEnvPosition = 0;
pChn->nAutoVibDepth = 0;
pChn->nAutoVibPos = 0;
}
}
// Tick-0 only volume commands
if (volcmd == VOLCMD_VOLUME)
{
if (vol > 64) vol = 64;
pChn->nVolume = vol << 2;
pChn->dwFlags |= CHN_FASTVOLRAMP;
} else
if (volcmd == VOLCMD_PANNING)
{
if (vol > 64) vol = 64;
pChn->nPan = vol << 2;
pChn->dwFlags |= CHN_FASTVOLRAMP;
}
}
// Volume Column Effect (except volume & panning)
if ((volcmd > VOLCMD_PANNING) && (m_nTickCount >= nStartTick))
{
if (volcmd == VOLCMD_TONEPORTAMENTO)
{
if (m_nType & MOD_TYPE_IT)
TonePortamento(pChn, ImpulseTrackerPortaVolCmd[vol & 0x0F]);
else
TonePortamento(pChn, vol * 16);
} else
{
if (vol) pChn->nOldVolParam = vol; else vol = pChn->nOldVolParam;
switch(volcmd)
{
case VOLCMD_VOLSLIDEUP:
VolumeSlide(pChn, vol << 4);
break;
case VOLCMD_VOLSLIDEDOWN:
VolumeSlide(pChn, vol);
break;
case VOLCMD_FINEVOLUP:
if (m_nType & MOD_TYPE_IT)
{
if (m_nTickCount == nStartTick) VolumeSlide(pChn, (vol << 4) | 0x0F);
} else
FineVolumeUp(pChn, vol);
break;
case VOLCMD_FINEVOLDOWN:
if (m_nType & MOD_TYPE_IT)
{
if (m_nTickCount == nStartTick) VolumeSlide(pChn, 0xF0 | vol);
} else
FineVolumeDown(pChn, vol);
break;
case VOLCMD_VIBRATOSPEED:
Vibrato(pChn, vol << 4);
break;
case VOLCMD_VIBRATO:
Vibrato(pChn, vol);
break;
case VOLCMD_PANSLIDELEFT:
PanningSlide(pChn, vol);
break;
case VOLCMD_PANSLIDERIGHT:
PanningSlide(pChn, vol << 4);
break;
case VOLCMD_PORTAUP:
PortamentoUp(pChn, vol << 2);
break;
case VOLCMD_PORTADOWN:
PortamentoDown(pChn, vol << 2);
break;
}
}
}
// Effects
if (cmd) switch (cmd)
{
// Set Volume
case CMD_VOLUME:
if (!m_nTickCount)
{
pChn->nVolume = (param < 64) ? param*4 : 256;
pChn->dwFlags |= CHN_FASTVOLRAMP;
}
break;
// Portamento Up
case CMD_PORTAMENTOUP:
if ((!param) && (m_nType & MOD_TYPE_MOD)) break;
PortamentoUp(pChn, param);
break;
// Portamento Down
case CMD_PORTAMENTODOWN:
if ((!param) && (m_nType & MOD_TYPE_MOD)) break;
PortamentoDown(pChn, param);
break;
// Volume Slide
case CMD_VOLUMESLIDE:
if ((param) || (m_nType != MOD_TYPE_MOD)) VolumeSlide(pChn, param);
break;
// Tone-Portamento
case CMD_TONEPORTAMENTO:
TonePortamento(pChn, param);
break;
// Tone-Portamento + Volume Slide
case CMD_TONEPORTAVOL:
if ((param) || (m_nType != MOD_TYPE_MOD)) VolumeSlide(pChn, param);
TonePortamento(pChn, 0);
break;
// Vibrato
case CMD_VIBRATO:
Vibrato(pChn, param);
break;
// Vibrato + Volume Slide
case CMD_VIBRATOVOL:
if ((param) || (m_nType != MOD_TYPE_MOD)) VolumeSlide(pChn, param);
Vibrato(pChn, 0);
break;
// Set Speed
case CMD_SPEED:
if (!m_nTickCount) SetSpeed(param);
break;
// Set Tempo
case CMD_TEMPO:
if (!m_nTickCount)
{
if (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT))