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winamp/Src/external_dependencies/openmpt-trunk/soundlib/modcommand.cpp
Jef f2d940131e Initial community commit
2024-09-24 14:54:57 +02:00

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/*
* modcommand.cpp
* --------------
* Purpose: Various functions for writing effects to patterns, converting ModCommands, etc.
* Notes : (currently none)
* Authors: OpenMPT Devs
* The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
*/
#include "stdafx.h"
#include "Sndfile.h"
#include "mod_specifications.h"
#include "Tables.h"
OPENMPT_NAMESPACE_BEGIN
const EffectType effectTypes[] =
{
EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL, EFFECT_TYPE_PITCH, EFFECT_TYPE_PITCH,
EFFECT_TYPE_PITCH, EFFECT_TYPE_PITCH, EFFECT_TYPE_VOLUME, EFFECT_TYPE_VOLUME,
EFFECT_TYPE_VOLUME, EFFECT_TYPE_PANNING, EFFECT_TYPE_NORMAL, EFFECT_TYPE_VOLUME,
EFFECT_TYPE_GLOBAL, EFFECT_TYPE_VOLUME, EFFECT_TYPE_GLOBAL, EFFECT_TYPE_NORMAL,
EFFECT_TYPE_GLOBAL, EFFECT_TYPE_GLOBAL, EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL,
EFFECT_TYPE_NORMAL, EFFECT_TYPE_VOLUME, EFFECT_TYPE_VOLUME, EFFECT_TYPE_GLOBAL,
EFFECT_TYPE_GLOBAL, EFFECT_TYPE_NORMAL, EFFECT_TYPE_PITCH, EFFECT_TYPE_PANNING,
EFFECT_TYPE_PITCH, EFFECT_TYPE_PANNING, EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL,
EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL, EFFECT_TYPE_PITCH,
EFFECT_TYPE_PITCH, EFFECT_TYPE_NORMAL, EFFECT_TYPE_PITCH, EFFECT_TYPE_PITCH,
EFFECT_TYPE_PITCH, EFFECT_TYPE_PITCH, EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL,
EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL,
};
static_assert(std::size(effectTypes) == MAX_EFFECTS);
const EffectType volumeEffectTypes[] =
{
EFFECT_TYPE_NORMAL, EFFECT_TYPE_VOLUME, EFFECT_TYPE_PANNING, EFFECT_TYPE_VOLUME,
EFFECT_TYPE_VOLUME, EFFECT_TYPE_VOLUME, EFFECT_TYPE_VOLUME, EFFECT_TYPE_PITCH,
EFFECT_TYPE_PITCH, EFFECT_TYPE_PANNING, EFFECT_TYPE_PANNING, EFFECT_TYPE_PITCH,
EFFECT_TYPE_PITCH, EFFECT_TYPE_PITCH, EFFECT_TYPE_NORMAL, EFFECT_TYPE_NORMAL,
};
static_assert(std::size(volumeEffectTypes) == MAX_VOLCMDS);
EffectType ModCommand::GetEffectType(COMMAND cmd)
{
if(cmd < std::size(effectTypes))
return effectTypes[cmd];
else
return EFFECT_TYPE_NORMAL;
}
EffectType ModCommand::GetVolumeEffectType(VOLCMD volcmd)
{
if(volcmd < std::size(volumeEffectTypes))
return volumeEffectTypes[volcmd];
else
return EFFECT_TYPE_NORMAL;
}
// Convert an Exx command (MOD) to Sxx command (S3M)
void ModCommand::ExtendedMODtoS3MEffect()
{
if(command != CMD_MODCMDEX)
return;
command = CMD_S3MCMDEX;
switch(param & 0xF0)
{
case 0x00: command = CMD_NONE; break; // No filter control
case 0x10: command = CMD_PORTAMENTOUP; param |= 0xF0; break;
case 0x20: command = CMD_PORTAMENTODOWN; param |= 0xF0; break;
case 0x30: param = (param & 0x0F) | 0x10; break;
case 0x40: param = (param & 0x03) | 0x30; break;
case 0x50: param = (param & 0x0F) | 0x20; break;
case 0x60: param = (param & 0x0F) | 0xB0; break;
case 0x70: param = (param & 0x03) | 0x40; break;
case 0x90: command = CMD_RETRIG; param = (param & 0x0F); break;
case 0xA0: if(param & 0x0F) { command = CMD_VOLUMESLIDE; param = (param << 4) | 0x0F; } else command = CMD_NONE; break;
case 0xB0: if(param & 0x0F) { command = CMD_VOLUMESLIDE; param = 0xF0 | static_cast<PARAM>(std::min(param & 0x0F, 0x0E)); } else command = CMD_NONE; break;
case 0xC0: if(param == 0xC0) { command = CMD_NONE; note = NOTE_NOTECUT; } break; // this does different things in IT and ST3
case 0xD0: if(param == 0xD0) { command = CMD_NONE; } break; // ditto
// rest are the same or handled elsewhere
}
}
// Convert an Sxx command (S3M) to Exx command (MOD)
void ModCommand::ExtendedS3MtoMODEffect()
{
if(command != CMD_S3MCMDEX)
return;
command = CMD_MODCMDEX;
switch(param & 0xF0)
{
case 0x10: param = (param & 0x0F) | 0x30; break;
case 0x20: param = (param & 0x0F) | 0x50; break;
case 0x30: param = (param & 0x0F) | 0x40; break;
case 0x40: param = (param & 0x0F) | 0x70; break;
case 0x50: command = CMD_XFINEPORTAUPDOWN; break; // map to unused X5x
case 0x60: command = CMD_XFINEPORTAUPDOWN; break; // map to unused X6x
case 0x80: command = CMD_PANNING8; param = (param & 0x0F) * 0x11; break; // FT2 does actually not support E8x
case 0x90: command = CMD_XFINEPORTAUPDOWN; break; // map to unused X9x
case 0xA0: command = CMD_XFINEPORTAUPDOWN; break; // map to unused XAx
case 0xB0: param = (param & 0x0F) | 0x60; break;
case 0x70: command = CMD_NONE; break; // No NNA / envelope control in MOD/XM format
// rest are the same or handled elsewhere
}
}
// Convert a mod command from one format to another.
void ModCommand::Convert(MODTYPE fromType, MODTYPE toType, const CSoundFile &sndFile)
{
if(fromType == toType)
{
return;
}
if(fromType == MOD_TYPE_MTM)
{
// Special MTM fixups.
// Retrigger with param 0
if(command == CMD_MODCMDEX && param == 0x90)
{
command = CMD_NONE;
} else if(command == CMD_VIBRATO)
{
// Vibrato is approximately half as deep compared to MOD/S3M.
uint8 speed = (param & 0xF0);
uint8 depth = (param & 0x0F) >> 1;
param = speed | depth;
}
// Apart from these special fixups, do a regular conversion from MOD.
fromType = MOD_TYPE_MOD;
}
if(command == CMD_DIGIREVERSESAMPLE && toType != MOD_TYPE_DIGI)
{
command = CMD_S3MCMDEX;
param = 0x9F;
}
// helper variables
const bool oldTypeIsMOD = (fromType == MOD_TYPE_MOD), oldTypeIsXM = (fromType == MOD_TYPE_XM),
oldTypeIsS3M = (fromType == MOD_TYPE_S3M), oldTypeIsIT = (fromType == MOD_TYPE_IT),
oldTypeIsMPT = (fromType == MOD_TYPE_MPT), oldTypeIsMOD_XM = (oldTypeIsMOD || oldTypeIsXM),
oldTypeIsS3M_IT_MPT = (oldTypeIsS3M || oldTypeIsIT || oldTypeIsMPT),
oldTypeIsIT_MPT = (oldTypeIsIT || oldTypeIsMPT);
const bool newTypeIsMOD = (toType == MOD_TYPE_MOD), newTypeIsXM = (toType == MOD_TYPE_XM),
newTypeIsS3M = (toType == MOD_TYPE_S3M), newTypeIsIT = (toType == MOD_TYPE_IT),
newTypeIsMPT = (toType == MOD_TYPE_MPT), newTypeIsMOD_XM = (newTypeIsMOD || newTypeIsXM),
newTypeIsS3M_IT_MPT = (newTypeIsS3M || newTypeIsIT || newTypeIsMPT),
newTypeIsIT_MPT = (newTypeIsIT || newTypeIsMPT);
const CModSpecifications &newSpecs = CSoundFile::GetModSpecifications(toType);
//////////////////////////
// Convert 8-bit Panning
if(command == CMD_PANNING8)
{
if(newTypeIsS3M)
{
param = (param + 1) >> 1;
} else if(oldTypeIsS3M)
{
if(param == 0xA4)
{
// surround remap
command = static_cast<COMMAND>((toType & (MOD_TYPE_IT | MOD_TYPE_MPT)) ? CMD_S3MCMDEX : CMD_XFINEPORTAUPDOWN);
param = 0x91;
} else
{
param = mpt::saturate_cast<PARAM>(param * 2u);
}
}
} // End if(command == CMD_PANNING8)
// Re-map \xx to Zxx if the new format only knows the latter command.
if(command == CMD_SMOOTHMIDI && !newSpecs.HasCommand(CMD_SMOOTHMIDI) && newSpecs.HasCommand(CMD_MIDI))
{
command = CMD_MIDI;
}
///////////////////////////////////////////////////////////////////////////////////////
// MPTM to anything: Convert param control, extended envelope control, note delay+cut
if(oldTypeIsMPT)
{
if(IsPcNote())
{
COMMAND newCmd = static_cast<COMMAND>(note == NOTE_PC ? CMD_MIDI : CMD_SMOOTHMIDI);
if(!newSpecs.HasCommand(newCmd))
{
newCmd = CMD_MIDI; // assuming that this was CMD_SMOOTHMIDI
if(!newSpecs.HasCommand(newCmd))
{
newCmd = CMD_NONE;
}
}
param = static_cast<PARAM>(std::min(static_cast<uint16>(maxColumnValue), GetValueEffectCol()) * 0x7F / maxColumnValue);
command = newCmd; // might be removed later
volcmd = VOLCMD_NONE;
note = NOTE_NONE;
instr = 0;
}
if((command == CMD_S3MCMDEX) && ((param & 0xF0) == 0x70) && ((param & 0x0F) > 0x0C))
{
// Extended pitch envelope control commands
param = 0x7C;
} else if(command == CMD_DELAYCUT)
{
command = CMD_S3MCMDEX; // When converting to MOD/XM, this will be converted to CMD_MODCMDEX later
param = 0xD0 | (param >> 4); // Preserve delay nibble
} else if(command == CMD_FINETUNE || command == CMD_FINETUNE_SMOOTH)
{
// Convert finetune from +/-128th of a semitone to (extra-)fine portamento (assumes linear slides, plus we're missing the actual pitch wheel depth of the instrument)
if(param < 0x80)
{
command = CMD_PORTAMENTODOWN;
param = 0x80 - param;
} else if(param > 0x80)
{
command = CMD_PORTAMENTOUP;
param -= 0x80;
}
if(param <= 30)
param = 0xE0 | ((param + 1u) / 2u);
else
param = 0xF0 | std::min(static_cast<PARAM>((param + 7u) / 8u), PARAM(15));
}
} // End if(oldTypeIsMPT)
/////////////////////////////////////////
// Convert MOD / XM to S3M / IT / MPTM
if(oldTypeIsMOD_XM && newTypeIsS3M_IT_MPT)
{
switch(command)
{
case CMD_ARPEGGIO:
if(!param) command = CMD_NONE; // 000 does nothing in MOD/XM
break;
case CMD_MODCMDEX:
ExtendedMODtoS3MEffect();
break;
case CMD_VOLUME:
// Effect column volume command overrides the volume column in XM.
if(volcmd == VOLCMD_NONE || volcmd == VOLCMD_VOLUME)
{
volcmd = VOLCMD_VOLUME;
vol = param;
if(vol > 64) vol = 64;
command = CMD_NONE;
param = 0;
} else if(volcmd == VOLCMD_PANNING)
{
std::swap(vol, param);
volcmd = VOLCMD_VOLUME;
if(vol > 64) vol = 64;
command = CMD_S3MCMDEX;
param = 0x80 | (param / 4); // XM volcol panning is actually 4-Bit, so we can use 4-Bit panning here.
}
break;
case CMD_PORTAMENTOUP:
if(param > 0xDF) param = 0xDF;
break;
case CMD_PORTAMENTODOWN:
if(param > 0xDF) param = 0xDF;
break;
case CMD_XFINEPORTAUPDOWN:
switch(param & 0xF0)
{
case 0x10: command = CMD_PORTAMENTOUP; param = (param & 0x0F) | 0xE0; break;
case 0x20: command = CMD_PORTAMENTODOWN; param = (param & 0x0F) | 0xE0; break;
case 0x50:
case 0x60:
case 0x70:
case 0x90:
case 0xA0:
command = CMD_S3MCMDEX;
// Surround remap (this is the "official" command)
if(toType & MOD_TYPE_S3M && param == 0x91)
{
command = CMD_PANNING8;
param = 0xA4;
}
break;
}
break;
case CMD_KEYOFF:
if(note == NOTE_NONE)
{
note = newTypeIsS3M ? NOTE_NOTECUT : NOTE_KEYOFF;
command = CMD_S3MCMDEX;
if(param == 0)
instr = 0;
param = 0xD0 | (param & 0x0F);
}
break;
case CMD_PANNINGSLIDE:
// swap L/R, convert to fine slide
if(param & 0xF0)
{
param = 0xF0 | std::min(PARAM(0x0E), static_cast<PARAM>(param >> 4));
} else
{
param = 0x0F | (std::min(PARAM(0x0E), static_cast<PARAM>(param & 0x0F)) << 4);
}
break;
default:
break;
}
} // End if(oldTypeIsMOD_XM && newTypeIsS3M_IT_MPT)
/////////////////////////////////////////
// Convert S3M / IT / MPTM to MOD / XM
else if(oldTypeIsS3M_IT_MPT && newTypeIsMOD_XM)
{
if(note == NOTE_NOTECUT)
{
// convert note cut to C00 if possible or volume command otherwise (MOD/XM has no real way of cutting notes that cannot be "undone" by volume commands)
note = NOTE_NONE;
if(command == CMD_NONE || !newTypeIsXM)
{
command = CMD_VOLUME;
param = 0;
} else
{
volcmd = VOLCMD_VOLUME;
vol = 0;
}
} else if(note == NOTE_FADE)
{
// convert note fade to note off
note = NOTE_KEYOFF;
}
switch(command)
{
case CMD_S3MCMDEX:
ExtendedS3MtoMODEffect();
break;
case CMD_TONEPORTAVOL: // Can't do fine slides and portamento/vibrato at the same time :(
case CMD_VIBRATOVOL: // ditto
if(volcmd == VOLCMD_NONE && (((param & 0xF0) && ((param & 0x0F) == 0x0F)) || ((param & 0x0F) && ((param & 0xF0) == 0xF0))))
{
// Try to salvage portamento/vibrato
if(command == CMD_TONEPORTAVOL)
volcmd = VOLCMD_TONEPORTAMENTO;
else if(command == CMD_VIBRATOVOL)
volcmd = VOLCMD_VIBRATODEPTH;
vol = 0;
}
[[fallthrough]];
case CMD_VOLUMESLIDE:
if((param & 0xF0) && ((param & 0x0F) == 0x0F))
{
command = CMD_MODCMDEX;
param = (param >> 4) | 0xA0;
} else if((param & 0x0F) && ((param & 0xF0) == 0xF0))
{
command = CMD_MODCMDEX;
param = (param & 0x0F) | 0xB0;
}
break;
case CMD_PORTAMENTOUP:
if(param >= 0xF0)
{
command = CMD_MODCMDEX;
param = (param & 0x0F) | 0x10;
} else if(param >= 0xE0)
{
if(newTypeIsXM)
{
command = CMD_XFINEPORTAUPDOWN;
param = 0x10 | (param & 0x0F);
} else
{
command = CMD_MODCMDEX;
param = (((param & 0x0F) + 3) >> 2) | 0x10;
}
} else
{
command = CMD_PORTAMENTOUP;
}
break;
case CMD_PORTAMENTODOWN:
if(param >= 0xF0)
{
command = CMD_MODCMDEX;
param = (param & 0x0F) | 0x20;
} else if(param >= 0xE0)
{
if(newTypeIsXM)
{
command = CMD_XFINEPORTAUPDOWN;
param = 0x20 | (param & 0x0F);
} else
{
command = CMD_MODCMDEX;
param = (((param & 0x0F) + 3) >> 2) | 0x20;
}
} else
{
command = CMD_PORTAMENTODOWN;
}
break;
case CMD_TEMPO:
if(param < 0x20) command = CMD_NONE; // no tempo slides
break;
case CMD_PANNINGSLIDE:
// swap L/R, convert fine slides to normal slides
if((param & 0x0F) == 0x0F && (param & 0xF0))
{
param = (param >> 4);
} else if((param & 0xF0) == 0xF0 && (param & 0x0F))
{
param = (param & 0x0F) << 4;
} else if(param & 0x0F)
{
param = 0xF0;
} else if(param & 0xF0)
{
param = 0x0F;
} else
{
param = 0;
}
break;
case CMD_RETRIG:
// Retrig: Q0y doesn't change volume in IT/S3M, but R0y in XM takes the last x parameter
if(param != 0 && (param & 0xF0) == 0)
{
param |= 0x80;
}
break;
default:
break;
}
} // End if(oldTypeIsS3M_IT_MPT && newTypeIsMOD_XM)
///////////////////////
// Convert IT to S3M
else if(oldTypeIsIT_MPT && newTypeIsS3M)
{
if(note == NOTE_KEYOFF || note == NOTE_FADE)
note = NOTE_NOTECUT;
switch(command)
{
case CMD_S3MCMDEX:
switch(param & 0xF0)
{
case 0x70: command = CMD_NONE; break; // No NNA / envelope control in S3M format
case 0x90:
if(param == 0x91)
{
// surround remap (this is the "official" command)
command = CMD_PANNING8;
param = 0xA4;
} else if(param == 0x90)
{
command = CMD_PANNING8;
param = 0x40;
}
break;
}
break;
case CMD_GLOBALVOLUME:
param = (std::min(PARAM(0x80), param) + 1) / 2u;
break;
default:
break;
}
} // End if(oldTypeIsIT_MPT && newTypeIsS3M)
//////////////////////
// Convert IT to XM
if(oldTypeIsIT_MPT && newTypeIsXM)
{
switch(command)
{
case CMD_VIBRATO:
// With linear slides, strength is roughly doubled.
param = (param & 0xF0) | (((param & 0x0F) + 1) / 2u);
break;
case CMD_GLOBALVOLUME:
param = (std::min(PARAM(0x80), param) + 1) / 2u;
break;
}
} // End if(oldTypeIsIT_MPT && newTypeIsXM)
//////////////////////
// Convert XM to IT
if(oldTypeIsXM && newTypeIsIT_MPT)
{
switch(command)
{
case CMD_VIBRATO:
// With linear slides, strength is roughly halved.
param = (param & 0xF0) | std::min(static_cast<PARAM>((param & 0x0F) * 2u), PARAM(15));
break;
case CMD_GLOBALVOLUME:
param = std::min(PARAM(0x40), param) * 2u;
break;
}
} // End if(oldTypeIsIT_MPT && newTypeIsXM)
///////////////////////////////////
// MOD / XM Speed/Tempo limits
if(newTypeIsMOD_XM)
{
switch(command)
{
case CMD_SPEED:
param = std::min(param, PARAM(0x1F));
break;
break;
case CMD_TEMPO:
param = std::max(param, PARAM(0x20));
break;
}
}
///////////////////////////////////////////////////////////////////////
// Convert MOD to anything - adjust effect memory, remove Invert Loop
if(oldTypeIsMOD)
{
switch(command)
{
case CMD_TONEPORTAVOL: // lacks memory -> 500 is the same as 300
if(param == 0x00)
command = CMD_TONEPORTAMENTO;
break;
case CMD_VIBRATOVOL: // lacks memory -> 600 is the same as 400
if(param == 0x00)
command = CMD_VIBRATO;
break;
case CMD_PORTAMENTOUP: // lacks memory -> remove
case CMD_PORTAMENTODOWN:
case CMD_VOLUMESLIDE:
if(param == 0x00)
command = CMD_NONE;
break;
case CMD_MODCMDEX: // This would turn into "Set Active Macro", so let's better remove it
case CMD_S3MCMDEX:
if((param & 0xF0) == 0xF0)
command = CMD_NONE;
break;
}
} // End if(oldTypeIsMOD && newTypeIsXM)
/////////////////////////////////////////////////////////////////////
// Convert anything to MOD - remove volume column, remove Set Macro
if(newTypeIsMOD)
{
// convert note off events
if(IsSpecialNote())
{
note = NOTE_NONE;
// no effect present, so just convert note off to volume 0
if(command == CMD_NONE)
{
command = CMD_VOLUME;
param = 0;
// EDx effect present, so convert it to ECx
} else if((command == CMD_MODCMDEX) && ((param & 0xF0) == 0xD0))
{
param = 0xC0 | (param & 0x0F);
}
}
if(command != CMD_NONE) switch(command)
{
case CMD_RETRIG: // MOD only has E9x
command = CMD_MODCMDEX;
param = 0x90 | (param & 0x0F);
break;
case CMD_MODCMDEX: // This would turn into "Invert Loop", so let's better remove it
if((param & 0xF0) == 0xF0) command = CMD_NONE;
break;
}
if(command == CMD_NONE) switch(volcmd)
{
case VOLCMD_VOLUME:
command = CMD_VOLUME;
param = vol;
break;
case VOLCMD_PANNING:
command = CMD_PANNING8;
param = vol < 64 ? vol << 2 : 255;
break;
case VOLCMD_VOLSLIDEDOWN:
command = CMD_VOLUMESLIDE;
param = vol;
break;
case VOLCMD_VOLSLIDEUP:
command = CMD_VOLUMESLIDE;
param = vol << 4;
break;
case VOLCMD_FINEVOLDOWN:
command = CMD_MODCMDEX;
param = 0xB0 | vol;
break;
case VOLCMD_FINEVOLUP:
command = CMD_MODCMDEX;
param = 0xA0 | vol;
break;
case VOLCMD_PORTADOWN:
command = CMD_PORTAMENTODOWN;
param = vol << 2;
break;
case VOLCMD_PORTAUP:
command = CMD_PORTAMENTOUP;
param = vol << 2;
break;
case VOLCMD_TONEPORTAMENTO:
command = CMD_TONEPORTAMENTO;
param = vol << 2;
break;
case VOLCMD_VIBRATODEPTH:
command = CMD_VIBRATO;
param = vol;
break;
case VOLCMD_VIBRATOSPEED:
command = CMD_VIBRATO;
param = vol << 4;
break;
}
volcmd = VOLCMD_NONE;
} // End if(newTypeIsMOD)
///////////////////////////////////////////////////
// Convert anything to S3M - adjust volume column
if(newTypeIsS3M)
{
if(command == CMD_NONE) switch(volcmd)
{
case VOLCMD_VOLSLIDEDOWN:
command = CMD_VOLUMESLIDE;
param = vol;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_VOLSLIDEUP:
command = CMD_VOLUMESLIDE;
param = vol << 4;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_FINEVOLDOWN:
command = CMD_VOLUMESLIDE;
param = 0xF0 | vol;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_FINEVOLUP:
command = CMD_VOLUMESLIDE;
param = (vol << 4) | 0x0F;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_PORTADOWN:
command = CMD_PORTAMENTODOWN;
param = vol << 2;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_PORTAUP:
command = CMD_PORTAMENTOUP;
param = vol << 2;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_TONEPORTAMENTO:
command = CMD_TONEPORTAMENTO;
param = vol << 2;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_VIBRATODEPTH:
command = CMD_VIBRATO;
param = vol;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_VIBRATOSPEED:
command = CMD_VIBRATO;
param = vol << 4;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_PANSLIDELEFT:
command = CMD_PANNINGSLIDE;
param = vol << 4;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_PANSLIDERIGHT:
command = CMD_PANNINGSLIDE;
param = vol;
volcmd = VOLCMD_NONE;
break;
}
} // End if(newTypeIsS3M)
////////////////////////////////////////////////////////////////////////
// Convert anything to XM - adjust volume column, breaking EDx command
if(newTypeIsXM)
{
// remove EDx if no note is next to it, or it will retrigger the note in FT2 mode
if(command == CMD_MODCMDEX && (param & 0xF0) == 0xD0 && note == NOTE_NONE)
{
command = CMD_NONE;
param = 0;
}
if(IsSpecialNote())
{
// Instrument numbers next to Note Off reset instrument settings
instr = 0;
if(command == CMD_MODCMDEX && (param & 0xF0) == 0xD0)
{
// Note Off + Note Delay does nothing when using envelopes.
note = NOTE_NONE;
command = CMD_KEYOFF;
param &= 0x0F;
}
}
// Convert some commands which behave differently or don't exist
if(command == CMD_NONE) switch(volcmd)
{
case VOLCMD_PORTADOWN:
command = CMD_PORTAMENTODOWN;
param = vol << 2;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_PORTAUP:
command = CMD_PORTAMENTOUP;
param = vol << 2;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_TONEPORTAMENTO:
command = CMD_TONEPORTAMENTO;
param = ImpulseTrackerPortaVolCmd[vol & 0x0F];
volcmd = VOLCMD_NONE;
break;
}
} // End if(newTypeIsXM)
///////////////////////////////////////////////////
// Convert anything to IT - adjust volume column
if(newTypeIsIT_MPT)
{
// Convert some commands which behave differently or don't exist
if(!oldTypeIsIT_MPT && command == CMD_NONE) switch(volcmd)
{
case VOLCMD_PANSLIDELEFT:
command = CMD_PANNINGSLIDE;
param = vol << 4;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_PANSLIDERIGHT:
command = CMD_PANNINGSLIDE;
param = vol;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_VIBRATOSPEED:
command = CMD_VIBRATO;
param = vol << 4;
volcmd = VOLCMD_NONE;
break;
case VOLCMD_TONEPORTAMENTO:
command = CMD_TONEPORTAMENTO;
param = vol << 4;
volcmd = VOLCMD_NONE;
break;
}
switch(volcmd)
{
case VOLCMD_VOLSLIDEDOWN:
case VOLCMD_VOLSLIDEUP:
case VOLCMD_FINEVOLDOWN:
case VOLCMD_FINEVOLUP:
case VOLCMD_PORTADOWN:
case VOLCMD_PORTAUP:
case VOLCMD_TONEPORTAMENTO:
case VOLCMD_VIBRATODEPTH:
// OpenMPT-specific commands
case VOLCMD_OFFSET:
vol = std::min(vol, VOL(9));
break;
}
} // End if(newTypeIsIT_MPT)
// Fix volume column offset for formats that don't have it.
if(volcmd == VOLCMD_OFFSET && !newSpecs.HasVolCommand(VOLCMD_OFFSET) && (command == CMD_NONE || command == CMD_OFFSET || !newSpecs.HasCommand(command)))
{
const ModCommand::PARAM oldOffset = (command == CMD_OFFSET) ? param : 0;
command = CMD_OFFSET;
volcmd = VOLCMD_NONE;
SAMPLEINDEX smp = instr;
if(smp > 0 && smp <= sndFile.GetNumInstruments() && IsNote() && sndFile.Instruments[smp] != nullptr)
smp = sndFile.Instruments[smp]->Keyboard[note - NOTE_MIN];
if(smp > 0 && smp <= sndFile.GetNumSamples() && vol <= std::size(ModSample().cues))
{
const ModSample &sample = sndFile.GetSample(smp);
if(vol == 0)
param = mpt::saturate_cast<ModCommand::PARAM>(Util::muldivr_unsigned(sample.nLength, oldOffset, 65536u));
else
param = mpt::saturate_cast<ModCommand::PARAM>((sample.cues[vol - 1] + (oldOffset * 256u) + 128u) / 256u);
} else
{
param = vol << 3;
}
}
if((command == CMD_REVERSEOFFSET || command == CMD_OFFSETPERCENTAGE) && !newSpecs.HasCommand(command))
{
command = CMD_OFFSET;
}
if(!newSpecs.HasNote(note))
note = NOTE_NONE;
// ensure the commands really exist in this format
if(!newSpecs.HasCommand(command))
command = CMD_NONE;
if(!newSpecs.HasVolCommand(volcmd))
volcmd = VOLCMD_NONE;
}
bool ModCommand::IsContinousCommand(const CSoundFile &sndFile) const
{
switch(command)
{
case CMD_ARPEGGIO:
case CMD_TONEPORTAMENTO:
case CMD_VIBRATO:
case CMD_TREMOLO:
case CMD_RETRIG:
case CMD_TREMOR:
case CMD_FINEVIBRATO:
case CMD_PANBRELLO:
case CMD_SMOOTHMIDI:
case CMD_NOTESLIDEUP:
case CMD_NOTESLIDEDOWN:
case CMD_NOTESLIDEUPRETRIG:
case CMD_NOTESLIDEDOWNRETRIG:
return true;
case CMD_PORTAMENTOUP:
case CMD_PORTAMENTODOWN:
if(!param && sndFile.GetType() == MOD_TYPE_MOD)
return false;
if(sndFile.GetType() & (MOD_TYPE_MOD | MOD_TYPE_XM | MOD_TYPE_MT2 | MOD_TYPE_MED | MOD_TYPE_AMF0 | MOD_TYPE_DIGI | MOD_TYPE_STP | MOD_TYPE_DTM))
return true;
if(param >= 0xF0)
return false;
if(param >= 0xE0 && sndFile.GetType() != MOD_TYPE_DBM)
return false;
return true;
case CMD_VOLUMESLIDE:
case CMD_TONEPORTAVOL:
case CMD_VIBRATOVOL:
case CMD_GLOBALVOLSLIDE:
case CMD_CHANNELVOLSLIDE:
case CMD_PANNINGSLIDE:
if(!param && sndFile.GetType() == MOD_TYPE_MOD)
return false;
if(sndFile.GetType() & (MOD_TYPE_MOD | MOD_TYPE_XM | MOD_TYPE_AMF0 | MOD_TYPE_MED | MOD_TYPE_DIGI))
return true;
if((param & 0xF0) == 0xF0 && (param & 0x0F))
return false;
if((param & 0x0F) == 0x0F && (param & 0xF0))
return false;
return true;
case CMD_TEMPO:
return (param < 0x20);
default:
return false;
}
}
bool ModCommand::IsContinousVolColCommand() const
{
switch(volcmd)
{
case VOLCMD_VOLSLIDEUP:
case VOLCMD_VOLSLIDEDOWN:
case VOLCMD_VIBRATOSPEED:
case VOLCMD_VIBRATODEPTH:
case VOLCMD_PANSLIDELEFT:
case VOLCMD_PANSLIDERIGHT:
case VOLCMD_TONEPORTAMENTO:
case VOLCMD_PORTAUP:
case VOLCMD_PORTADOWN:
return true;
default:
return false;
}
}
bool ModCommand::IsSlideUpDownCommand() const
{
switch(command)
{
case CMD_VOLUMESLIDE:
case CMD_TONEPORTAVOL:
case CMD_VIBRATOVOL:
case CMD_GLOBALVOLSLIDE:
case CMD_CHANNELVOLSLIDE:
case CMD_PANNINGSLIDE:
return true;
default:
return false;
}
}
bool ModCommand::IsGlobalCommand(COMMAND command, PARAM param)
{
switch(command)
{
case CMD_POSITIONJUMP:
case CMD_PATTERNBREAK:
case CMD_SPEED:
case CMD_TEMPO:
case CMD_GLOBALVOLUME:
case CMD_GLOBALVOLSLIDE:
case CMD_MIDI:
case CMD_SMOOTHMIDI:
case CMD_DBMECHO:
return true;
case CMD_MODCMDEX:
switch(param & 0xF0)
{
case 0x00: // LED Filter
case 0x60: // Pattern Loop
case 0xE0: // Row Delay
return true;
default:
return false;
}
case CMD_XFINEPORTAUPDOWN:
case CMD_S3MCMDEX:
switch(param & 0xF0)
{
case 0x60: // Tick Delay
case 0x90: // Sound Control
case 0xB0: // Pattern Loop
case 0xE0: // Row Delay
return true;
default:
return false;
}
default:
return false;
}
}
// "Importance" of every FX command. Table is used for importing from formats with multiple effect colums
// and is approximately the same as in SchismTracker.
size_t ModCommand::GetEffectWeight(COMMAND cmd)
{
// Effect weights, sorted from lowest to highest weight.
static constexpr COMMAND weights[] =
{
CMD_NONE,
CMD_DUMMY,
CMD_XPARAM,
CMD_SETENVPOSITION,
CMD_KEYOFF,
CMD_TREMOLO,
CMD_FINEVIBRATO,
CMD_VIBRATO,
CMD_XFINEPORTAUPDOWN,
CMD_FINETUNE,
CMD_FINETUNE_SMOOTH,
CMD_PANBRELLO,
CMD_S3MCMDEX,
CMD_MODCMDEX,
CMD_DELAYCUT,
CMD_MIDI,
CMD_SMOOTHMIDI,
CMD_PANNINGSLIDE,
CMD_PANNING8,
CMD_NOTESLIDEUPRETRIG,
CMD_NOTESLIDEUP,
CMD_NOTESLIDEDOWNRETRIG,
CMD_NOTESLIDEDOWN,
CMD_PORTAMENTOUP,
CMD_PORTAMENTODOWN,
CMD_VOLUMESLIDE,
CMD_VIBRATOVOL,
CMD_VOLUME,
CMD_DIGIREVERSESAMPLE,
CMD_REVERSEOFFSET,
CMD_OFFSETPERCENTAGE,
CMD_OFFSET,
CMD_TREMOR,
CMD_RETRIG,
CMD_ARPEGGIO,
CMD_TONEPORTAMENTO,
CMD_TONEPORTAVOL,
CMD_DBMECHO,
CMD_GLOBALVOLSLIDE,
CMD_CHANNELVOLUME,
CMD_GLOBALVOLSLIDE,
CMD_GLOBALVOLUME,
CMD_TEMPO,
CMD_SPEED,
CMD_POSITIONJUMP,
CMD_PATTERNBREAK,
};
static_assert(std::size(weights) == MAX_EFFECTS);
for(size_t i = 0; i < std::size(weights); i++)
{
if(weights[i] == cmd)
{
return i;
}
}
// Invalid / unknown command.
return 0;
}
// Try to convert a fx column command (&effect) into a volume column command.
// Returns true if successful.
// Some commands can only be converted by losing some precision.
// If moving the command into the volume column is more important than accuracy, use force = true.
// (Code translated from SchismTracker and mainly supposed to be used with loaders ported from this tracker)
bool ModCommand::ConvertVolEffect(uint8 &effect, uint8 &param, bool force)
{
switch(effect)
{
case CMD_NONE:
effect = VOLCMD_NONE;
return true;
case CMD_VOLUME:
effect = VOLCMD_VOLUME;
param = std::min(param, PARAM(64));
break;
case CMD_PORTAMENTOUP:
// if not force, reject when dividing causes loss of data in LSB, or if the final value is too
// large to fit. (volume column Ex/Fx are four times stronger than effect column)
if(!force && ((param & 3) || param >= 0xE0))
return false;
param /= 4;
effect = VOLCMD_PORTAUP;
break;
case CMD_PORTAMENTODOWN:
if(!force && ((param & 3) || param >= 0xE0))
return false;
param /= 4;
effect = VOLCMD_PORTADOWN;
break;
case CMD_TONEPORTAMENTO:
if(param >= 0xF0)
{
// hack for people who can't type F twice :)
effect = VOLCMD_TONEPORTAMENTO;
param = 9;
return true;
}
for(uint8 n = 0; n < 10; n++)
{
if(force
? (param <= ImpulseTrackerPortaVolCmd[n])
: (param == ImpulseTrackerPortaVolCmd[n]))
{
effect = VOLCMD_TONEPORTAMENTO;
param = n;
return true;
}
}
return false;
case CMD_VIBRATO:
if(force)
param = std::min(static_cast<PARAM>(param & 0x0F), PARAM(9));
else if((param & 0x0F) > 9 || (param & 0xF0) != 0)
return false;
param &= 0x0F;
effect = VOLCMD_VIBRATODEPTH;
break;
case CMD_FINEVIBRATO:
if(force)
param = 0;
else if(param)
return false;
effect = VOLCMD_VIBRATODEPTH;
break;
case CMD_PANNING8:
if(param == 255)
param = 64;
else
param /= 4;
effect = VOLCMD_PANNING;
break;
case CMD_VOLUMESLIDE:
if(param == 0)
return false;
if((param & 0xF) == 0) // Dx0 / Cx
{
param >>= 4;
effect = VOLCMD_VOLSLIDEUP;
} else if((param & 0xF0) == 0) // D0x / Dx
{
effect = VOLCMD_VOLSLIDEDOWN;
} else if((param & 0xF) == 0xF) // DxF / Ax
{
param >>= 4;
effect = VOLCMD_FINEVOLUP;
} else if((param & 0xF0) == 0xF0) // DFx / Bx
{
param &= 0xF;
effect = VOLCMD_FINEVOLDOWN;
} else // ???
{
return false;
}
break;
case CMD_S3MCMDEX:
switch (param >> 4)
{
case 8:
effect = VOLCMD_PANNING;
param = ((param & 0xF) << 2) + 2;
return true;
case 0: case 1: case 2: case 0xF:
if(force)
{
effect = param = 0;
return true;
}
break;
default:
break;
}
return false;
default:
return false;
}
return true;
}
// Try to combine two commands into one. Returns true on success and the combined command is placed in eff1 / param1.
bool ModCommand::CombineEffects(uint8 &eff1, uint8 &param1, uint8 &eff2, uint8 &param2)
{
if(eff1 == CMD_VOLUMESLIDE && (eff2 == CMD_VIBRATO || eff2 == CMD_TONEPORTAVOL) && param2 == 0)
{
// Merge commands
if(eff2 == CMD_VIBRATO)
{
eff1 = CMD_VIBRATOVOL;
} else
{
eff1 = CMD_TONEPORTAVOL;
}
eff2 = CMD_NONE;
return true;
} else if(eff2 == CMD_VOLUMESLIDE && (eff1 == CMD_VIBRATO || eff1 == CMD_TONEPORTAVOL) && param1 == 0)
{
// Merge commands
if(eff1 == CMD_VIBRATO)
{
eff1 = CMD_VIBRATOVOL;
} else
{
eff1 = CMD_TONEPORTAVOL;
}
param1 = param2;
eff2 = CMD_NONE;
return true;
} else if(eff1 == CMD_OFFSET && eff2 == CMD_S3MCMDEX && param2 == 0x9F)
{
// Reverse offset
eff1 = CMD_REVERSEOFFSET;
eff2 = CMD_NONE;
return true;
} else if(eff1 == CMD_S3MCMDEX && param1 == 0x9F && eff2 == CMD_OFFSET)
{
// Reverse offset
eff1 = CMD_REVERSEOFFSET;
param1 = param2;
eff2 = CMD_NONE;
return true;
} else
{
return false;
}
}
std::pair<EffectCommand, ModCommand::PARAM> ModCommand::TwoRegularCommandsToMPT(uint8 &effect1, uint8 &param1, uint8 &effect2, uint8 &param2)
{
for(uint8 n = 0; n < 4; n++)
{
if(ModCommand::ConvertVolEffect(effect1, param1, (n > 1)))
{
return {CMD_NONE, ModCommand::PARAM(0)};
}
std::swap(effect1, effect2);
std::swap(param1, param2);
}
// Can only keep one command :(
if(GetEffectWeight(static_cast<COMMAND>(effect1)) > GetEffectWeight(static_cast<COMMAND>(effect2)))
{
std::swap(effect1, effect2);
std::swap(param1, param2);
}
std::pair<EffectCommand, PARAM> lostCommand = {static_cast<EffectCommand>(effect1), param1};
effect1 = VOLCMD_NONE;
param1 = 0;
return lostCommand;
}
OPENMPT_NAMESPACE_END
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