ref: 6d4ea7ae0f7253bed01a62c15a9ceffa076166ba
dir: /src/ft2_replayer.c/
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#include <stdint.h>
#include <stdio.h>
#include <math.h>
#include "ft2_header.h"
#include "ft2_config.h"
#include "ft2_gui.h"
#include "ft2_video.h"
#include "ft2_pattern_ed.h"
#include "ft2_sample_ed.h"
#include "ft2_inst_ed.h"
#include "ft2_diskop.h"
#include "ft2_midi.h"
#include "scopes/ft2_scopes.h"
#include "ft2_mouse.h"
#include "ft2_sample_loader.h"
#include "ft2_tables.h"
#include "ft2_structs.h"
#include "mixer/ft2_cubic_spline.h"
#include "mixer/ft2_windowed_sinc.h"
static double dLogTab[4*12*16], dExp2MulTab[32];
static bool bxxOverflow;
static note_t nilPatternLine[MAX_CHANNELS];
typedef void (*volColumnEfxRoutine)(channel_t *ch);
typedef void (*volColumnEfxRoutine2)(channel_t *ch, uint8_t *volColumnData);
typedef void (*efxRoutine)(channel_t *ch, uint8_t param);
// globally accessed
int8_t playMode = 0;
bool songPlaying = false, audioPaused = false, musicPaused = false;
volatile bool replayerBusy = false;
const uint16_t *note2Period = NULL;
int16_t patternNumRows[MAX_PATTERNS];
channel_t channel[MAX_CHANNELS];
song_t song;
instr_t *instr[128+4];
note_t *pattern[MAX_PATTERNS];
// ----------------------------------
void fixString(char *str, int32_t lastChrPos) // removes leading spaces and 0x1A chars
{
for (int32_t i = lastChrPos; i >= 0; i--)
{
if (str[i] == ' ' || str[i] == 0x1A)
str[i] = '\0';
else if (str[i] != '\0')
break;
}
str[lastChrPos+1] = '\0';
}
void fixSongName(void)
{
fixString(song.name, 19);
}
void fixInstrAndSampleNames(int16_t insNum)
{
fixString(song.instrName[insNum], 21);
if (instr[insNum] != NULL)
{
sample_t *s = instr[insNum]->smp;
for (int32_t i = 0; i < MAX_SMP_PER_INST; i++, s++)
fixString(s->name, 21);
}
}
void resetReplayerState(void)
{
song.pattDelTime = song.pattDelTime2 = 0;
song.posJumpFlag = false;
song.pBreakPos = 0;
song.pBreakFlag = false;
channel_t *ch = channel;
for (int32_t i = 0; i < song.numChannels; i++, ch++)
{
ch->patternLoopStartRow = 0;
ch->patternLoopCounter = 0;
}
// reset global volume (if song was playing)
if (songPlaying)
{
song.globalVolume = 64;
ch = channel;
for (int32_t i = 0; i < song.numChannels; i++, ch++)
ch->status |= IS_Vol;
}
}
void resetChannels(void)
{
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
memset(channel, 0, sizeof (channel));
channel_t *ch = channel;
for (int32_t i = 0; i < MAX_CHANNELS; i++, ch++)
{
ch->instrPtr = instr[0];
ch->status = IS_Vol;
ch->oldPan = 128;
ch->outPan = 128;
ch->finalPan = 128;
ch->channelOff = !editor.chnMode[i]; // set channel mute flag from global mute flag
}
if (audioWasntLocked)
unlockAudio();
}
void setSongModifiedFlag(void)
{
song.isModified = true;
editor.updateWindowTitle = true;
}
void removeSongModifiedFlag(void)
{
song.isModified = false;
editor.updateWindowTitle = true;
}
// used on external sample load and during sample loading (on some module formats)
void tuneSample(sample_t *s, const int32_t midCFreq, bool linearPeriodsFlag)
{
#define MIN_PERIOD (0)
#define MAX_PERIOD (((10*12*16)-1)-1) /* -1 (because of bugged amigaPeriods table values) */
double (*dGetHzFromPeriod)(int32_t) = linearPeriodsFlag ? dLinearPeriod2Hz : dAmigaPeriod2Hz;
const uint16_t *periodTab = linearPeriodsFlag ? linearPeriods : amigaPeriods;
if (midCFreq <= 0 || periodTab == NULL)
{
s->finetune = s->relativeNote = 0;
return;
}
// handle frequency boundaries first...
if (midCFreq <= (int32_t)dGetHzFromPeriod(periodTab[MIN_PERIOD]))
{
s->finetune = -128;
s->relativeNote = -48;
return;
}
if (midCFreq >= (int32_t)dGetHzFromPeriod(periodTab[MAX_PERIOD]))
{
s->finetune = 127;
s->relativeNote = 71;
return;
}
// check if midCFreq is matching any of the non-finetuned note frequencies (C-0..B-9)
for (int8_t i = 0; i < 10*12; i++)
{
if (midCFreq == (int32_t)dGetHzFromPeriod(periodTab[16 + (i<<4)]))
{
s->finetune = 0;
s->relativeNote = i - NOTE_C4;
return;
}
}
// find closest frequency in period table
int32_t period = MAX_PERIOD;
for (; period >= MIN_PERIOD; period--)
{
const int32_t curr = (int32_t)dGetHzFromPeriod(periodTab[period]);
if (midCFreq == curr)
break;
if (midCFreq > curr)
{
const int32_t next = (int32_t)dGetHzFromPeriod(periodTab[period+1]);
const int32_t errorCurr = ABS(curr-midCFreq);
const int32_t errorNext = ABS(next-midCFreq);
if (errorCurr <= errorNext)
break; // current is the closest
period++;
break; // current+1 is the closest
}
}
s->finetune = ((period & 31) - 16) << 3;
s->relativeNote = (int8_t)(((period & ~31) >> 4) - NOTE_C4);
}
void setPatternLen(uint16_t pattNum, int16_t numRows)
{
assert(pattNum < MAX_PATTERNS);
if ((numRows < 1 || numRows > MAX_PATT_LEN) || numRows == patternNumRows[pattNum])
return;
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
patternNumRows[pattNum] = numRows;
if (pattern[pattNum] != NULL)
killPatternIfUnused(pattNum);
// non-FT2 security
song.pattDelTime = 0;
song.pattDelTime2 = 0;
song.pBreakFlag = false;
song.posJumpFlag = false;
song.pBreakPos = 0;
song.currNumRows = numRows;
if (song.row >= song.currNumRows)
{
song.row = song.currNumRows - 1;
editor.row = song.row;
}
checkMarkLimits();
if (audioWasntLocked)
unlockAudio();
ui.updatePatternEditor = true;
ui.updatePosSections = true;
}
int16_t getUsedSamples(int16_t smpNum)
{
if (instr[smpNum] == NULL)
return 0;
instr_t *ins = instr[smpNum];
int16_t i = 16 - 1;
while (i >= 0 && ins->smp[i].dataPtr == NULL && ins->smp[i].name[0] == '\0')
i--;
/* Yes, 'i' can be -1 here, and will be set to at least 0
** because of ins->ta values. Possibly an FT2 bug...
*/
for (int16_t j = 0; j < 96; j++)
{
if (ins->note2SampleLUT[j] > i)
i = ins->note2SampleLUT[j];
}
return i+1;
}
int16_t getRealUsedSamples(int16_t smpNum)
{
if (instr[smpNum] == NULL)
return 0;
int8_t i = 16 - 1;
while (i >= 0 && instr[smpNum]->smp[i].dataPtr == NULL)
i--;
return i+1;
}
double dLinearPeriod2Hz(int32_t period)
{
period &= 0xFFFF; // just in case (actual period range is 0..65535)
if (period == 0)
return 0.0; // in FT2, a period of 0 results in 0Hz
const uint32_t invPeriod = ((12 * 192 * 4) - period) & 0xFFFF; // mask needed for FT2 period overflow quirk
const uint32_t quotient = invPeriod / (12 * 16 * 4);
const uint32_t remainder = invPeriod % (12 * 16 * 4);
return dLogTab[remainder] * dExp2MulTab[(14-quotient) & 31]; // x = y >> ((14-quotient) & 31);
}
double dAmigaPeriod2Hz(int32_t period)
{
period &= 0xFFFF; // just in case (actual period range is 0..65535)
if (period == 0)
return 0.0; // in FT2, a period of 0 results in 0Hz
return (8363.0 * 1712.0) / period;
}
double dPeriod2Hz(int32_t period)
{
return audio.linearPeriodsFlag ? dLinearPeriod2Hz(period) : dAmigaPeriod2Hz(period);
}
// returns *exact* FT2 C-4 voice rate (depending on finetune, relativeNote and linear/Amiga period mode)
double getSampleC4Rate(sample_t *s)
{
int32_t note = NOTE_C4 + s->relativeNote;
if (note < 0)
return -1; // shouldn't happen (just in case...)
if (note >= (10*12)-1)
return -1; // B-9 (after relativeNote calculation) = illegal! (won't play in replayer)
const int32_t C4Period = (note << 4) + (((int8_t)s->finetune >> 3) + 16);
const int32_t period = audio.linearPeriodsFlag ? linearPeriods[C4Period] : amigaPeriods[C4Period];
return dPeriod2Hz(period);
}
void setLinearPeriods(bool linearPeriodsFlag)
{
pauseAudio();
audio.linearPeriodsFlag = linearPeriodsFlag;
if (audio.linearPeriodsFlag)
note2Period = linearPeriods;
else
note2Period = amigaPeriods;
resumeAudio();
if (ui.configScreenShown && editor.currConfigScreen == CONFIG_SCREEN_AUDIO)
{
// update "frequency slides" radiobutton, if it's shown
setConfigAudioRadioButtonStates();
}
// update mid-C freq. in instr. editor (it can slightly differ between Amiga/linear)
if (ui.instEditorShown)
drawC4Rate();
}
static void resetVolumes(channel_t *ch)
{
ch->realVol = ch->oldVol;
ch->outVol = ch->oldVol;
ch->outPan = ch->oldPan;
ch->status |= IS_Vol + IS_Pan + IS_QuickVol;
}
static void triggerInstrument(channel_t *ch)
{
if (!(ch->vibTremCtrl & 0x04)) ch->vibratoPos = 0;
if (!(ch->vibTremCtrl & 0x40)) ch->tremoloPos = 0;
ch->noteRetrigCounter = 0;
ch->tremorPos = 0;
ch->keyOff = false;
instr_t *ins = ch->instrPtr;
if (ins != NULL) // just in case
{
// reset volume envelope
if (ins->volEnvFlags & ENV_ENABLED)
{
ch->volEnvTick = 65535; // will be increased to 0 on envelope handling
ch->volEnvPos = 0;
}
// reset panning envelope
if (ins->panEnvFlags & ENV_ENABLED)
{
ch->panEnvTick = 65535; // will be increased to 0 on envelope handling
ch->panEnvPos = 0;
}
// reset fadeout
ch->fadeoutSpeed = ins->fadeout; // Warning: FT2 doesn't check if fadeout is more than 4095!
ch->fadeoutVol = 32768;
// reset auto-vibrato
if (ins->autoVibDepth > 0)
{
ch->autoVibPos = 0;
if (ins->autoVibSweep > 0)
{
ch->autoVibAmp = 0;
ch->autoVibSweep = (ins->autoVibDepth << 8) / ins->autoVibSweep;
}
else
{
ch->autoVibAmp = ins->autoVibDepth << 8;
ch->autoVibSweep = 0;
}
}
}
}
void keyOff(channel_t *ch)
{
ch->keyOff = true;
instr_t *ins = ch->instrPtr;
assert(ins != NULL);
if (ins->volEnvFlags & ENV_ENABLED)
{
if (ch->volEnvTick >= (uint16_t)ins->volEnvPoints[ch->volEnvPos][0])
ch->volEnvTick = ins->volEnvPoints[ch->volEnvPos][0] - 1;
}
else
{
ch->realVol = 0;
ch->outVol = 0;
ch->status |= IS_Vol + IS_QuickVol;
}
if (!(ins->panEnvFlags & ENV_ENABLED)) // great, another FT2 logic bug
{
if (ch->panEnvTick >= (uint16_t)ins->panEnvPoints[ch->panEnvPos][0])
ch->panEnvTick = ins->panEnvPoints[ch->panEnvPos][0] - 1;
}
}
void calcReplayerLogTab(void) // for linear period -> hz calculation
{
for (int32_t i = 0; i < 32; i++)
dExp2MulTab[i] = 1.0 / exp2(i); // 1/(2^i)
for (int32_t i = 0; i < 4*12*16; i++)
dLogTab[i] = (8363.0 * 256.0) * exp2(i / (4.0 * 12.0 * 16.0));
}
void calcReplayerVars(int32_t audioFreq)
{
assert(audioFreq > 0);
if (audioFreq <= 0)
return;
audio.dHz2MixDeltaMul = (double)MIXER_FRAC_SCALE / audioFreq;
audio.quickVolRampSamples = (uint32_t)round(audioFreq / (double)FT2_QUICKRAMP_SAMPLES);
for (int32_t bpm = MIN_BPM; bpm <= MAX_BPM; bpm++)
{
const int32_t i = bpm - MIN_BPM; // index for tables
const double dBpmHz = bpm / 2.5;
const double dSamplesPerTick = audioFreq / dBpmHz;
double dSamplesPerTickInt;
double dSamplesPerTickFrac = modf(dSamplesPerTick, &dSamplesPerTickInt);
audio.samplesPerTickIntTab[i] = (uint32_t)dSamplesPerTickInt;
audio.samplesPerTickFracTab[i] = (uint64_t)((dSamplesPerTickFrac * BPM_FRAC_SCALE) + 0.5); // rounded
// BPM Hz -> tick length for performance counter (syncing visuals to audio)
double dTimeInt;
double dTimeFrac = modf(editor.dPerfFreq / dBpmHz, &dTimeInt);
audio.tickTimeIntTab[i] = (uint32_t)dTimeInt;
audio.tickTimeFracTab[i] = (uint64_t)((dTimeFrac * TICK_TIME_FRAC_SCALE) + 0.5); // rounded
}
}
// for piano in Instr. Ed. (values outside 0..95 can happen)
int32_t getPianoKey(uint16_t period, int8_t finetune, int8_t relativeNote)
{
assert(note2Period != NULL);
if (period > note2Period[0])
return -1; // outside left piano edge
finetune = ((int8_t)finetune >> 3) + 16; // -128..127 -> 0..31
int32_t hiPeriod = 10*12*16;
int32_t loPeriod = 0;
for (int32_t i = 0; i < 7; i++)
{
const int32_t tmpPeriod = (((loPeriod + hiPeriod) >> 1) & ~15) + finetune;
int32_t lookUp = tmpPeriod - 16;
if (lookUp < 0)
lookUp = 0;
if (period >= note2Period[lookUp])
hiPeriod = (tmpPeriod - finetune) & ~15;
else
loPeriod = (tmpPeriod - finetune) & ~15;
}
return (loPeriod >> 4) - relativeNote;
}
static void triggerNote(uint8_t note, uint8_t efx, uint8_t efxData, channel_t *ch)
{
if (note == NOTE_OFF)
{
keyOff(ch);
return;
}
// if we came from Rxy (retrig), we didn't check note (Ton) yet
if (note == 0)
{
note = ch->noteNum;
if (note == 0)
return; // if still no note, exit from routine
}
ch->noteNum = note;
assert(ch->instrNum <= 130);
instr_t *ins = instr[ch->instrNum];
if (ins == NULL)
ins = instr[0]; // empty instruments use this placeholder instrument
ch->instrPtr = ins;
ch->mute = ins->mute;
if (note > 96) // non-FT2 sanity check
note = 96;
ch->smpNum = ins->note2SampleLUT[note-1] & 0xF; // FT2 doesn't mask it, but let's do it anyway
sample_t *s = &ins->smp[ch->smpNum];
ch->smpPtr = s;
ch->relativeNote = s->relativeNote;
note += ch->relativeNote;
if (note >= 10*12) // unsigned check (also handles note < 0)
return;
ch->oldVol = s->volume;
ch->oldPan = s->panning;
if (efx == 0xE && (efxData & 0xF0) == 0x50)
ch->finetune = ((efxData & 0x0F) * 16) - 128;
else
ch->finetune = s->finetune;
if (note != 0)
{
const uint16_t noteIndex = ((note-1) * 16) + (((int8_t)ch->finetune >> 3) + 16); // 0..1920
assert(note2Period != NULL);
ch->outPeriod = ch->realPeriod = note2Period[noteIndex];
}
ch->status |= IS_Period + IS_Vol + IS_Pan + IS_Trigger + IS_QuickVol;
if (efx == 9)
{
if (efxData > 0)
ch->sampleOffset = ch->efxData;
ch->smpStartPos = ch->sampleOffset << 8;
}
else
{
ch->smpStartPos = 0;
}
}
static void volSlide(channel_t *ch, uint8_t param);
static void doVibrato(channel_t *ch);
static void portamento(channel_t *ch, uint8_t param);
static void dummy(channel_t *ch, uint8_t param)
{
(void)ch;
(void)param;
return;
}
static void finePitchSlideUp(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->fPitchSlideUpSpeed;
ch->fPitchSlideUpSpeed = param;
ch->realPeriod -= param * 4;
if ((int16_t)ch->realPeriod < 1)
ch->realPeriod = 1;
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
}
static void finePitchSlideDown(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->fPitchSlideDownSpeed;
ch->fPitchSlideDownSpeed = param;
ch->realPeriod += param * 4;
if ((int16_t)ch->realPeriod >= 32000) // FT2 bug, should've been unsigned comparison
ch->realPeriod = 32000-1;
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
}
static void setPortamentoCtrl(channel_t *ch, uint8_t param)
{
ch->portaSemitoneSlides = (param != 0);
}
static void setVibratoCtrl(channel_t *ch, uint8_t param)
{
ch->vibTremCtrl = (ch->vibTremCtrl & 0xF0) | param;
}
static void patternLoop(channel_t *ch, uint8_t param)
{
if (param == 0)
{
ch->patternLoopStartRow = song.row & 0xFF;
}
else if (ch->patternLoopCounter == 0)
{
ch->patternLoopCounter = param;
song.pBreakPos = ch->patternLoopStartRow;
song.pBreakFlag = true;
}
else if (--ch->patternLoopCounter > 0)
{
song.pBreakPos = ch->patternLoopStartRow;
song.pBreakFlag = true;
}
}
static void setTremoloCtrl(channel_t *ch, uint8_t param)
{
ch->vibTremCtrl = (param << 4) | (ch->vibTremCtrl & 0x0F);
}
static void fineVolSlideUp(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->fVolSlideUpSpeed;
ch->fVolSlideUpSpeed = param;
ch->realVol += param;
if (ch->realVol > 64)
ch->realVol = 64;
ch->outVol = ch->realVol;
ch->status |= IS_Vol;
}
static void fineVolFineDown(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->fVolSlideDownSpeed;
ch->fVolSlideDownSpeed = param;
ch->realVol -= param;
if ((int8_t)ch->realVol < 0)
ch->realVol = 0;
ch->outVol = ch->realVol;
ch->status |= IS_Vol;
}
static void noteCut0(channel_t *ch, uint8_t param)
{
if (param == 0) // only a parameter of zero is handled here
{
ch->realVol = 0;
ch->outVol = 0;
ch->status |= IS_Vol + IS_QuickVol;
}
}
static void patternDelay(channel_t *ch, uint8_t param)
{
if (song.pattDelTime2 == 0)
song.pattDelTime = param + 1;
(void)ch;
}
static const efxRoutine EJumpTab_TickZero[16] =
{
dummy, // 0
finePitchSlideUp, // 1
finePitchSlideDown, // 2
setPortamentoCtrl, // 3
setVibratoCtrl, // 4
dummy, // 5
patternLoop, // 6
setTremoloCtrl, // 7
dummy, // 8
dummy, // 9
fineVolSlideUp, // A
fineVolFineDown, // B
noteCut0, // C
dummy, // D
patternDelay, // E
dummy // F
};
static void E_Effects_TickZero(channel_t *ch, uint8_t param)
{
const uint8_t efx = param >> 4;
param &= 0x0F;
if (ch->channelOff) // channel is muted, only handle some E effects
{
if (efx == 0x6) patternLoop(ch, param);
else if (efx == 0xE) patternDelay(ch, param);
return;
}
EJumpTab_TickZero[efx](ch, param);
}
static void positionJump(channel_t *ch, uint8_t param)
{
if (playMode != PLAYMODE_PATT && playMode != PLAYMODE_RECPATT)
{
const int16_t pos = (int16_t)param - 1;
if (pos < 0 || pos >= song.songLength)
bxxOverflow = true; // non-FT2 security fix...
else
song.songPos = pos;
}
song.pBreakPos = 0;
song.posJumpFlag = true;
(void)ch;
}
static void patternBreak(channel_t *ch, uint8_t param)
{
param = ((param >> 4) * 10) + (param & 0x0F);
if (param <= 63)
song.pBreakPos = param;
else
song.pBreakPos = 0;
song.posJumpFlag = true;
(void)ch;
}
static void setSpeed(channel_t *ch, uint8_t param)
{
if (param >= 32)
{
song.BPM = param;
setMixerBPM(song.BPM);
}
else
{
song.tick = song.speed = param;
}
(void)ch;
}
static void setGlobalVolume(channel_t *ch, uint8_t param)
{
if (param > 64)
param = 64;
song.globalVolume = param;
channel_t *c = channel;
for (int32_t i = 0; i < song.numChannels; i++, c++) // update all voice volumes
c->status |= IS_Vol;
(void)ch;
}
static void setEnvelopePos(channel_t *ch, uint8_t param)
{
bool envUpdate;
int8_t point;
int32_t tick;
instr_t *ins = ch->instrPtr;
assert(ins != NULL);
// envelope precision has been upgraded from .8fp to single-precision float
// *** VOLUME ENVELOPE ***
if (ins->volEnvFlags & ENV_ENABLED)
{
ch->volEnvTick = param-1;
point = 0;
envUpdate = true;
tick = param;
if (ins->volEnvLength > 1)
{
point++;
for (int32_t i = 0; i < ins->volEnvLength-1; i++)
{
if (tick < ins->volEnvPoints[point][0])
{
point--;
tick -= ins->volEnvPoints[point][0];
if (tick == 0) // FT2 doesn't test for <= 0 here
{
envUpdate = false;
break;
}
const int32_t xDiff = ins->volEnvPoints[point+1][0] - ins->volEnvPoints[point+0][0];
if (xDiff <= 0)
{
envUpdate = true;
break;
}
const int32_t y0 = ins->volEnvPoints[point+0][1] & 0xFF;
const int32_t y1 = ins->volEnvPoints[point+1][1] & 0xFF;
const int32_t yDiff = y1 - y0;
ch->fVolEnvDelta = (float)yDiff / (float)xDiff;
ch->fVolEnvValue = (float)y0 + (ch->fVolEnvDelta * (tick-1));
point++;
envUpdate = false;
break;
}
point++;
}
if (envUpdate)
point--;
}
if (envUpdate)
{
ch->fVolEnvDelta = 0.0f;
ch->fVolEnvValue = (float)(int32_t)(ins->volEnvPoints[point][1] & 0xFF);
}
if (point >= ins->volEnvLength)
{
point = ins->volEnvLength-1;
if (point < 0)
point = 0;
}
ch->volEnvPos = point;
}
// *** PANNING ENVELOPE ***
if (ins->volEnvFlags & ENV_SUSTAIN) // FT2 REPLAYER BUG: Should've been ins->panEnvFlags
{
ch->panEnvTick = param-1;
point = 0;
envUpdate = true;
tick = param;
if (ins->panEnvLength > 1)
{
point++;
for (int32_t i = 0; i < ins->panEnvLength-1; i++)
{
if (tick < ins->panEnvPoints[point][0])
{
point--;
tick -= ins->panEnvPoints[point][0];
if (tick == 0) // FT2 doesn't test for <= 0 here
{
envUpdate = false;
break;
}
const int32_t xDiff = ins->panEnvPoints[point+1][0] - ins->panEnvPoints[point+0][0];
if (xDiff <= 0)
{
envUpdate = true;
break;
}
const int32_t y0 = ins->panEnvPoints[point+0][1] & 0xFF;
const int32_t y1 = ins->panEnvPoints[point+1][1] & 0xFF;
const int32_t yDiff = y1 - y0;
ch->fPanEnvDelta = (float)yDiff / (float)xDiff;
ch->fPanEnvValue = (float)y0 + (ch->fPanEnvDelta * (tick-1));
point++;
envUpdate = false;
break;
}
point++;
}
if (envUpdate)
point--;
}
if (envUpdate)
{
ch->fPanEnvDelta = 0.0f;
ch->fPanEnvValue = (float)(int32_t)(ins->panEnvPoints[point][1] & 0xFF);
}
if (point >= ins->panEnvLength)
{
point = ins->panEnvLength-1;
if (point < 0)
point = 0;
}
ch->panEnvPos = point;
}
}
static const efxRoutine JumpTab_TickZero[36] =
{
dummy, // 0
dummy, // 1
dummy, // 2
dummy, // 3
dummy, // 4
dummy, // 5
dummy, // 6
dummy, // 7
dummy, // 8
dummy, // 9
dummy, // A
positionJump, // B
dummy, // C
patternBreak, // D
E_Effects_TickZero, // E
setSpeed, // F
setGlobalVolume, // G
dummy, // H
dummy, // I
dummy, // J
dummy, // K
setEnvelopePos, // L
dummy, // M
dummy, // N
dummy, // O
dummy, // P
dummy, // Q
dummy, // R
dummy, // S
dummy, // T
dummy, // U
dummy, // V
dummy, // W
dummy, // X
dummy, // Y
dummy // Z
};
static void handleMoreEffects_TickZero(channel_t *ch) // called even if channel is muted
{
if (ch->efx > 35)
return;
JumpTab_TickZero[ch->efx](ch, ch->efxData);
}
/* -- tick-zero volume column effects --
** 2nd parameter is used for a volume column quirk with the Rxy command (multiNoteRetrig)
*/
static void v_SetVibSpeed(channel_t *ch, uint8_t *volColumnData)
{
*volColumnData = (ch->volColumnVol & 0x0F) * 4;
if (*volColumnData != 0)
ch->vibratoSpeed = *volColumnData;
}
static void v_SetVolume(channel_t *ch, uint8_t *volColumnData)
{
*volColumnData -= 16;
if (*volColumnData > 64) // no idea why FT2 has this check...
*volColumnData = 64;
ch->outVol = ch->realVol = *volColumnData;
ch->status |= IS_Vol + IS_QuickVol;
}
static void v_FineVolSlideDown(channel_t *ch, uint8_t *volColumnData)
{
*volColumnData = (uint8_t)(0 - (ch->volColumnVol & 0x0F)) + ch->realVol;
if ((int8_t)*volColumnData < 0)
*volColumnData = 0;
ch->outVol = ch->realVol = *volColumnData;
ch->status |= IS_Vol;
}
static void v_FineVolSlideUp(channel_t *ch, uint8_t *volColumnData)
{
*volColumnData = (ch->volColumnVol & 0x0F) + ch->realVol;
if (*volColumnData > 64)
*volColumnData = 64;
ch->outVol = ch->realVol = *volColumnData;
ch->status |= IS_Vol;
}
static void v_SetPan(channel_t *ch, uint8_t *volColumnData)
{
*volColumnData <<= 4;
ch->outPan = *volColumnData;
ch->status |= IS_Pan;
}
// -- non-tick-zero volume column effects --
static void v_VolSlideDown(channel_t *ch)
{
uint8_t newVol = (uint8_t)(0 - (ch->volColumnVol & 0x0F)) + ch->realVol;
if ((int8_t)newVol < 0)
newVol = 0;
ch->outVol = ch->realVol = newVol;
ch->status |= IS_Vol;
}
static void v_VolSlideUp(channel_t *ch)
{
uint8_t newVol = (ch->volColumnVol & 0x0F) + ch->realVol;
if (newVol > 64)
newVol = 64;
ch->outVol = ch->realVol = newVol;
ch->status |= IS_Vol;
}
static void v_Vibrato(channel_t *ch)
{
const uint8_t param = ch->volColumnVol & 0xF;
if (param > 0)
ch->vibratoDepth = param;
doVibrato(ch);
}
static void v_PanSlideLeft(channel_t *ch)
{
uint16_t tmp16 = ch->outPan + (uint8_t)(0 - (ch->volColumnVol & 0x0F));
if (tmp16 < 256) // includes an FT2 bug: pan-slide-left of 0 = set pan to 0
tmp16 = 0;
ch->outPan = (uint8_t)tmp16;
ch->status |= IS_Pan;
}
static void v_PanSlideRight(channel_t *ch)
{
uint16_t tmp16 = ch->outPan + (ch->volColumnVol & 0x0F);
if (tmp16 > 255)
tmp16 = 255;
ch->outPan = (uint8_t)tmp16;
ch->status |= IS_Pan;
}
static void v_Portamento(channel_t *ch)
{
portamento(ch, 0); // the last parameter is actually not used in portamento()
}
static void v_dummy(channel_t *ch)
{
(void)ch;
return;
}
static void v_dummy2(channel_t *ch, uint8_t *volColumnData)
{
(void)ch;
(void)volColumnData;
return;
}
static const volColumnEfxRoutine VJumpTab_TickNonZero[16] =
{
v_dummy, v_dummy, v_dummy, v_dummy,
v_dummy, v_dummy, v_VolSlideDown, v_VolSlideUp,
v_dummy, v_dummy, v_dummy, v_Vibrato,
v_dummy, v_PanSlideLeft, v_PanSlideRight, v_Portamento
};
static const volColumnEfxRoutine2 VJumpTab_TickZero[16] =
{
v_dummy2, v_SetVolume, v_SetVolume, v_SetVolume,
v_SetVolume, v_SetVolume, v_dummy2, v_dummy2,
v_FineVolSlideDown, v_FineVolSlideUp, v_SetVibSpeed, v_dummy2,
v_SetPan, v_dummy2, v_dummy2, v_dummy2
};
static void setPan(channel_t *ch, uint8_t param)
{
ch->outPan = param;
ch->status |= IS_Pan;
}
static void setVol(channel_t *ch, uint8_t param)
{
if (param > 64)
param = 64;
ch->outVol = ch->realVol = param;
ch->status |= IS_Vol + IS_QuickVol;
}
static void extraFinePitchSlide(channel_t *ch, uint8_t param)
{
const uint8_t slideType = param >> 4;
param &= 0x0F;
if (slideType == 1) // slide up
{
if (param == 0)
param = ch->efPitchSlideUpSpeed;
ch->efPitchSlideUpSpeed = param;
uint16_t newPeriod = ch->realPeriod;
newPeriod -= param;
if ((int16_t)newPeriod < 1)
newPeriod = 1;
ch->outPeriod = ch->realPeriod = newPeriod;
ch->status |= IS_Period;
}
else if (slideType == 2) // slide down
{
if (param == 0)
param = ch->efPitchSlideDownSpeed;
ch->efPitchSlideDownSpeed = param;
uint16_t newPeriod = ch->realPeriod;
newPeriod += param;
if ((int16_t)newPeriod >= 32000) // FT2 bug, should've been unsigned comparison
newPeriod = 32000-1;
ch->outPeriod = ch->realPeriod = newPeriod;
ch->status |= IS_Period;
}
}
// "param" is never used (needed for efx jumptable structure)
static void doMultiNoteRetrig(channel_t *ch, uint8_t param)
{
uint8_t cnt = ch->noteRetrigCounter + 1;
if (cnt < ch->noteRetrigSpeed)
{
ch->noteRetrigCounter = cnt;
return;
}
ch->noteRetrigCounter = 0;
int16_t vol = ch->realVol;
switch (ch->noteRetrigVol)
{
case 0x1: vol -= 1; break;
case 0x2: vol -= 2; break;
case 0x3: vol -= 4; break;
case 0x4: vol -= 8; break;
case 0x5: vol -= 16; break;
case 0x6: vol = (vol >> 1) + (vol >> 3) + (vol >> 4); break;
case 0x7: vol >>= 1; break;
case 0x8: break; // does not change the volume
case 0x9: vol += 1; break;
case 0xA: vol += 2; break;
case 0xB: vol += 4; break;
case 0xC: vol += 8; break;
case 0xD: vol += 16; break;
case 0xE: vol = (vol >> 1) + vol; break;
case 0xF: vol += vol; break;
default: break;
}
vol = CLAMP(vol, 0, 64);
ch->realVol = (uint8_t)vol;
ch->outVol = ch->realVol;
if (ch->volColumnVol >= 0x10 && ch->volColumnVol <= 0x50)
{
ch->outVol = ch->volColumnVol - 0x10;
ch->realVol = ch->outVol;
}
else if (ch->volColumnVol >= 0xC0 && ch->volColumnVol <= 0xCF)
{
ch->outPan = (ch->volColumnVol & 0x0F) << 4;
}
triggerNote(0, 0, 0, ch);
(void)param;
}
static void multiNoteRetrig(channel_t *ch, uint8_t param, uint8_t volumeColumnData)
{
uint8_t tmpParam;
tmpParam = param & 0x0F;
if (tmpParam == 0)
tmpParam = ch->noteRetrigSpeed;
ch->noteRetrigSpeed = tmpParam;
tmpParam = param >> 4;
if (tmpParam == 0)
tmpParam = ch->noteRetrigVol;
ch->noteRetrigVol = tmpParam;
if (volumeColumnData == 0)
doMultiNoteRetrig(ch, 0); // the second parameter is never used (needed for efx jumptable structure)
}
static void handleEffects_TickZero(channel_t *ch)
{
// volume column effects
uint8_t newVolCol = ch->volColumnVol; // manipulated by vol. column effects, then used for multiNoteRetrig check (FT2 quirk)
VJumpTab_TickZero[ch->volColumnVol >> 4](ch, &newVolCol);
// normal effects
const uint8_t param = ch->efxData;
if (ch->efx == 0 && param == 0)
return; // no effect
if (ch->efx == 8) setPan(ch, param);
else if (ch->efx == 12) setVol(ch, param);
else if (ch->efx == 27) multiNoteRetrig(ch, param, newVolCol);
else if (ch->efx == 33) extraFinePitchSlide(ch, param);
handleMoreEffects_TickZero(ch);
}
static void preparePortamento(channel_t *ch, const note_t *p, uint8_t inst)
{
if (p->note > 0)
{
if (p->note == NOTE_OFF)
{
keyOff(ch);
}
else
{
const uint16_t note = (((p->note-1) + ch->relativeNote) * 16) + (((int8_t)ch->finetune >> 3) + 16);
if (note < MAX_NOTES)
{
assert(note2Period != NULL);
ch->portamentoTargetPeriod = note2Period[note];
if (ch->portamentoTargetPeriod == ch->realPeriod)
ch->portamentoDirection = 0;
else if (ch->portamentoTargetPeriod > ch->realPeriod)
ch->portamentoDirection = 1;
else
ch->portamentoDirection = 2;
}
}
}
if (inst > 0)
{
resetVolumes(ch);
if (p->note != NOTE_OFF)
triggerInstrument(ch);
}
}
static void getNewNote(channel_t *ch, const note_t *p)
{
ch->volColumnVol = p->vol;
if (ch->efx == 0)
{
if (ch->efxData > 0) // we have an arpeggio running, set period back
{
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
}
}
else
{
// if we have a vibrato on previous row (ch) that ends at current row (p), set period back
if ((ch->efx == 4 || ch->efx == 6) && (p->efx != 4 && p->efx != 6))
{
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
}
}
ch->efx = p->efx;
ch->efxData = p->efxData;
ch->copyOfInstrAndNote = (p->instr << 8) | p->note;
if (ch->channelOff) // channel is muted, only handle some effects
{
handleMoreEffects_TickZero(ch);
return;
}
// 'inst' var is used for later if checks...
uint8_t inst = p->instr;
if (inst > 0)
{
if (inst <= MAX_INST)
ch->instrNum = inst;
else
inst = 0;
}
if (p->efx == 0x0E && p->efxData >= 0xD1 && p->efxData <= 0xDF)
return; // we have a note delay (ED1..EDF)
// only handly effects here when no E90 (retrigger note, parameter zero)
if (p->efx != 0x0E || p->efxData != 0x90)
{
if ((ch->volColumnVol & 0xF0) == 0xF0) // gxx
{
const uint8_t param = ch->volColumnVol & 0x0F;
if (param > 0)
ch->portamentoSpeed = (param << 4) * 4;
preparePortamento(ch, p, inst);
handleEffects_TickZero(ch);
return;
}
if (p->efx == 3 || p->efx == 5) // 3xx or 5xx
{
if (p->efx != 5 && p->efxData != 0)
ch->portamentoSpeed = p->efxData * 4;
preparePortamento(ch, p, inst);
handleEffects_TickZero(ch);
return;
}
if (p->efx == 0x14 && p->efxData == 0) // K00 (KeyOff - only handle tick 0 here)
{
keyOff(ch);
if (inst)
resetVolumes(ch);
handleEffects_TickZero(ch);
return;
}
if (p->note == 0)
{
if (inst > 0)
{
resetVolumes(ch);
triggerInstrument(ch);
}
handleEffects_TickZero(ch);
return;
}
}
if (p->note == NOTE_OFF)
keyOff(ch);
else
triggerNote(p->note, p->efx, p->efxData, ch);
if (inst > 0)
{
resetVolumes(ch);
if (p->note != NOTE_OFF)
triggerInstrument(ch);
}
handleEffects_TickZero(ch);
}
static void updateVolPanAutoVib(channel_t *ch)
{
bool envInterpolateFlag, envDidInterpolate;
uint8_t envPos;
float fEnvVal, fVol;
instr_t *ins = ch->instrPtr;
assert(ins != NULL);
// *** FADEOUT ON KEY OFF ***
if (ch->keyOff)
{
if (ch->fadeoutSpeed > 0) // 0..4095
{
ch->fadeoutVol -= ch->fadeoutSpeed;
if (ch->fadeoutVol <= 0)
{
ch->fadeoutVol = 0;
ch->fadeoutSpeed = 0;
}
}
ch->status |= IS_Vol; // always update volume, even if fadeout has reached 0
}
if (!ch->mute)
{
// envelope precision has been upgraded from .8fp to single-precision float
// *** VOLUME ENVELOPE ***
fEnvVal = 0.0f;
if (ins->volEnvFlags & ENV_ENABLED)
{
envDidInterpolate = false;
envPos = ch->volEnvPos;
ch->volEnvTick++;
if (ch->volEnvTick == ins->volEnvPoints[envPos][0])
{
ch->fVolEnvValue = (float)(int32_t)(ins->volEnvPoints[envPos][1] & 0xFF);
envPos++;
if (ins->volEnvFlags & ENV_LOOP)
{
envPos--;
if (envPos == ins->volEnvLoopEnd)
{
if (!(ins->volEnvFlags & ENV_SUSTAIN) || envPos != ins->volEnvSustain || !ch->keyOff)
{
envPos = ins->volEnvLoopStart;
ch->volEnvTick = ins->volEnvPoints[envPos][0];
ch->fVolEnvValue = (float)(int32_t)(ins->volEnvPoints[envPos][1] & 0xFF);
}
}
envPos++;
}
if (envPos < ins->volEnvLength)
{
envInterpolateFlag = true;
if ((ins->volEnvFlags & ENV_SUSTAIN) && !ch->keyOff)
{
if (envPos-1 == ins->volEnvSustain)
{
envPos--;
ch->fVolEnvDelta = 0.0f;
envInterpolateFlag = false;
}
}
if (envInterpolateFlag)
{
ch->volEnvPos = envPos;
const int32_t x0 = ins->volEnvPoints[envPos-1][0];
const int32_t x1 = ins->volEnvPoints[envPos-0][0];
const int32_t xDiff = x1 - x0;
if (xDiff > 0)
{
const int32_t y0 = ins->volEnvPoints[envPos-1][1] & 0xFF;
const int32_t y1 = ins->volEnvPoints[envPos-0][1] & 0xFF;
const int32_t yDiff = y1 - y0;
ch->fVolEnvDelta = (float)yDiff / (float)xDiff;
fEnvVal = ch->fVolEnvValue;
envDidInterpolate = true;
}
else
{
ch->fVolEnvDelta = 0.0f;
}
}
}
else
{
ch->fVolEnvDelta = 0.0f;
}
}
if (!envDidInterpolate)
{
ch->fVolEnvValue += ch->fVolEnvDelta;
fEnvVal = ch->fVolEnvValue;
if (fEnvVal < 0.0f || fEnvVal > 64.0f)
{
fEnvVal = CLAMP(fEnvVal, 0.0f, 64.0f);
ch->fVolEnvDelta = 0.0f;
}
}
const int32_t vol = song.globalVolume * ch->outVol * ch->fadeoutVol;
fVol = vol * (1.0f / (64.0f * 64.0f * 32768.0f));
fVol *= fEnvVal * (1.0f / 64.0f); // volume envelope value
ch->status |= IS_Vol; // update mixer vol every tick when vol envelope is enabled
}
else
{
const int32_t vol = song.globalVolume * ch->outVol * ch->fadeoutVol;
fVol = vol * (1.0f / (64.0f * 64.0f * 32768.0f));
}
// FT2 doesn't clamp the volume, but let's do it anyway
ch->fFinalVol = CLAMP(fVol, 0.0f, 1.0f);
}
else
{
ch->fFinalVol = 0.0f;
}
// *** PANNING ENVELOPE ***
fEnvVal = 0.0f;
if (ins->panEnvFlags & ENV_ENABLED)
{
envDidInterpolate = false;
envPos = ch->panEnvPos;
ch->panEnvTick++;
if (ch->panEnvTick == ins->panEnvPoints[envPos][0])
{
ch->fPanEnvValue = (float)(int32_t)(ins->panEnvPoints[envPos][1] & 0xFF);
envPos++;
if (ins->panEnvFlags & ENV_LOOP)
{
envPos--;
if (envPos == ins->panEnvLoopEnd)
{
if (!(ins->panEnvFlags & ENV_SUSTAIN) || envPos != ins->panEnvSustain || !ch->keyOff)
{
envPos = ins->panEnvLoopStart;
ch->panEnvTick = ins->panEnvPoints[envPos][0];
ch->fPanEnvValue = (float)(int32_t)(ins->panEnvPoints[envPos][1] & 0xFF);
}
}
envPos++;
}
if (envPos < ins->panEnvLength)
{
envInterpolateFlag = true;
if ((ins->panEnvFlags & ENV_SUSTAIN) && !ch->keyOff)
{
if (envPos-1 == ins->panEnvSustain)
{
envPos--;
ch->fPanEnvDelta = 0.0f;
envInterpolateFlag = false;
}
}
if (envInterpolateFlag)
{
ch->panEnvPos = envPos;
const int32_t x0 = ins->panEnvPoints[envPos-1][0];
const int32_t x1 = ins->panEnvPoints[envPos-0][0];
const int32_t xDiff = x1 - x0;
if (xDiff > 0)
{
const int32_t y0 = ins->panEnvPoints[envPos-1][1] & 0xFF;
const int32_t y1 = ins->panEnvPoints[envPos-0][1] & 0xFF;
const int32_t yDiff = y1 - y0;
ch->fPanEnvDelta = (float)yDiff / (float)xDiff;
fEnvVal = ch->fPanEnvValue;
envDidInterpolate = true;
}
else
{
ch->fPanEnvDelta = 0.0f;
}
}
}
else
{
ch->fPanEnvDelta = 0.0f;
}
}
if (!envDidInterpolate)
{
ch->fPanEnvValue += ch->fPanEnvDelta;
fEnvVal = ch->fPanEnvValue;
if (fEnvVal < 0.0f || fEnvVal > 64.0f)
{
fEnvVal = CLAMP(fEnvVal, 0.0f, 64.0f);
ch->fPanEnvDelta = 0.0f;
}
}
fEnvVal -= 32.0f; // center panning envelope value (0..64 -> -32..32)
const int32_t pan = 128 - ABS(ch->outPan - 128);
const float fPanAdd = (pan * fEnvVal) * (1.0f / 32.0f);
const int32_t newPan = (int32_t)(ch->outPan + fPanAdd); // truncate here, do not round
ch->finalPan = (uint8_t)CLAMP(newPan, 0, 255); // FT2 doesn't clamp the pan, but let's do it anyway
ch->status |= IS_Pan; // update pan every tick because pan envelope is enabled
}
else
{
ch->finalPan = ch->outPan;
}
// *** AUTO VIBRATO ***
#ifdef HAS_MIDI
if (ch->midiVibDepth > 0 || ins->autoVibDepth > 0)
#else
if (ins->autoVibDepth > 0)
#endif
{
uint16_t autoVibAmp;
if (ch->autoVibSweep > 0)
{
autoVibAmp = ch->autoVibSweep;
if (!ch->keyOff)
{
autoVibAmp += ch->autoVibAmp;
if ((autoVibAmp >> 8) > ins->autoVibDepth)
{
autoVibAmp = ins->autoVibDepth << 8;
ch->autoVibSweep = 0;
}
ch->autoVibAmp = autoVibAmp;
}
}
else
{
autoVibAmp = ch->autoVibAmp;
}
#ifdef HAS_MIDI
// non-FT2 hack to make modulation wheel work when auto vibrato rate is zero
if (ch->midiVibDepth > 0 && ins->autoVibRate == 0)
ins->autoVibRate = 0x20;
autoVibAmp += ch->midiVibDepth;
#endif
ch->autoVibPos += ins->autoVibRate;
int16_t autoVibVal;
if (ins->autoVibType == 1) autoVibVal = (ch->autoVibPos > 127) ? 64 : -64; // square
else if (ins->autoVibType == 2) autoVibVal = (((ch->autoVibPos >> 1) + 64) & 127) - 64; // ramp up
else if (ins->autoVibType == 3) autoVibVal = ((-(ch->autoVibPos >> 1) + 64) & 127) - 64; // ramp down
else autoVibVal = autoVibSineTab[ch->autoVibPos]; // sine
autoVibVal = (autoVibVal * (int16_t)autoVibAmp) >> (6+8);
uint16_t tmpPeriod = ch->outPeriod + autoVibVal;
if (tmpPeriod >= 32000) // unsigned comparison
tmpPeriod = 0;
#ifdef HAS_MIDI
if (midi.enable)
tmpPeriod -= ch->midiPitch;
#endif
ch->finalPeriod = tmpPeriod;
ch->status |= IS_Period;
}
else
{
ch->finalPeriod = ch->outPeriod;
#ifdef HAS_MIDI
if (midi.enable)
{
ch->finalPeriod -= ch->midiPitch;
ch->status |= IS_Period;
}
#endif
}
}
// for arpeggio and portamento (semitone-slide mode)
static uint16_t adjustPeriodFromNote(uint16_t period, uint8_t arpNote, channel_t *ch)
{
int32_t tmpPeriod;
const int32_t fineTune = ((int8_t)ch->finetune >> 3) + 16;
/* FT2 bug, should've been 10*12*16. Notes above B-7 (95) will have issues.
** You can only achieve such high notes by having a high relative note setting.
*/
int32_t hiPeriod = 8*12*16;
int32_t loPeriod = 0;
for (int32_t i = 0; i < 8; i++)
{
tmpPeriod = (((loPeriod + hiPeriod) >> 1) & ~15) + fineTune;
int32_t lookUp = tmpPeriod - 8;
if (lookUp < 0)
lookUp = 0; // safety fix (C-0 w/ f.tune <= -65). This seems to result in 0 in FT2 (TODO: verify)
if (period >= note2Period[lookUp])
hiPeriod = (tmpPeriod - fineTune) & ~15;
else
loPeriod = (tmpPeriod - fineTune) & ~15;
}
tmpPeriod = loPeriod + fineTune + (arpNote << 4);
if (tmpPeriod >= (8*12*16+15)-1) // FT2 bug, should've been 10*12*16+16 (also notice the +2 difference)
tmpPeriod = (8*12*16+16)-1;
return note2Period[tmpPeriod];
}
static void doVibrato(channel_t *ch)
{
uint8_t tmpVib = (ch->vibratoPos >> 2) & 0x1F;
switch (ch->vibTremCtrl & 3)
{
// 0: sine
case 0: tmpVib = vibratoTab[tmpVib]; break;
// 1: ramp
case 1:
{
tmpVib <<= 3;
if ((int8_t)ch->vibratoPos < 0)
tmpVib = ~tmpVib;
}
break;
// 2/3: square
default: tmpVib = 255; break;
}
tmpVib = (tmpVib * ch->vibratoDepth) >> 5; // logical shift (unsigned calc.), not arithmetic shift
if ((int8_t)ch->vibratoPos < 0)
ch->outPeriod = ch->realPeriod - tmpVib;
else
ch->outPeriod = ch->realPeriod + tmpVib;
ch->status |= IS_Period;
ch->vibratoPos += ch->vibratoSpeed;
}
static void arpeggio(channel_t *ch, uint8_t param)
{
uint8_t note;
const uint8_t tick = arpeggioTab[song.tick & 255];
if (tick == 0)
{
ch->outPeriod = ch->realPeriod;
}
else
{
if (tick == 1)
note = param >> 4;
else
note = param & 0x0F; // tick 2
ch->outPeriod = adjustPeriodFromNote(ch->realPeriod, note, ch);
}
ch->status |= IS_Period;
}
static void pitchSlideUp(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->pitchSlideUpSpeed;
ch->pitchSlideUpSpeed = param;
ch->realPeriod -= param * 4;
if ((int16_t)ch->realPeriod < 1)
ch->realPeriod = 1;
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
}
static void pitchSlideDown(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->pitchSlideDownSpeed;
ch->pitchSlideDownSpeed = param;
ch->realPeriod += param * 4;
if ((int16_t)ch->realPeriod >= 32000) // FT2 bug, should've been unsigned comparison
ch->realPeriod = 32000-1;
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
}
static void portamento(channel_t *ch, uint8_t param)
{
if (ch->portamentoDirection == 0)
return;
if (ch->portamentoDirection > 1)
{
ch->realPeriod -= ch->portamentoSpeed;
if ((int16_t)ch->realPeriod <= (int16_t)ch->portamentoTargetPeriod)
{
ch->portamentoDirection = 1;
ch->realPeriod = ch->portamentoTargetPeriod;
}
}
else
{
ch->realPeriod += ch->portamentoSpeed;
if (ch->realPeriod >= ch->portamentoTargetPeriod)
{
ch->portamentoDirection = 1;
ch->realPeriod = ch->portamentoTargetPeriod;
}
}
if (ch->portaSemitoneSlides)
ch->outPeriod = adjustPeriodFromNote(ch->realPeriod, 0, ch);
else
ch->outPeriod = ch->realPeriod;
ch->status |= IS_Period;
(void)param;
}
static void vibrato(channel_t *ch, uint8_t param)
{
if (param > 0)
{
const uint8_t vibratoDepth = param & 0x0F;
if (vibratoDepth > 0)
ch->vibratoDepth = vibratoDepth;
const uint8_t vibratoSpeed = (param & 0xF0) >> 2;
if (vibratoSpeed > 0)
ch->vibratoSpeed = vibratoSpeed;
}
doVibrato(ch);
}
static void portamentoPlusVolSlide(channel_t *ch, uint8_t param)
{
portamento(ch, 0); // the last parameter is actually not used in portamento()
volSlide(ch, param);
(void)param;
}
static void vibratoPlusVolSlide(channel_t *ch, uint8_t param)
{
doVibrato(ch);
volSlide(ch, param);
(void)param;
}
static void tremolo(channel_t *ch, uint8_t param)
{
int16_t tremVol;
if (param > 0)
{
uint8_t tremoloDepth = param & 0x0F;
if (tremoloDepth > 0)
ch->tremoloDepth = tremoloDepth;
uint8_t tremoloSpeed = (param & 0xF0) >> 2;
if (tremoloSpeed > 0)
ch->tremoloSpeed = tremoloSpeed;
}
uint8_t tmpTrem = (ch->tremoloPos >> 2) & 0x1F;
switch ((ch->vibTremCtrl >> 4) & 3)
{
// 0: sine
case 0: tmpTrem = vibratoTab[tmpTrem]; break;
// 1: ramp
case 1:
{
tmpTrem <<= 3;
if ((int8_t)ch->vibratoPos < 0) // FT2 bug, should've been ch->tremoloPos
tmpTrem = ~tmpTrem;
}
break;
// 2/3: square
default: tmpTrem = 255; break;
}
tmpTrem = (tmpTrem * ch->tremoloDepth) >> 6; // logical shift (unsigned calc.), not arithmetic shift
if ((int8_t)ch->tremoloPos < 0)
{
tremVol = ch->realVol - tmpTrem;
if (tremVol < 0)
tremVol = 0;
}
else
{
tremVol = ch->realVol + tmpTrem;
if (tremVol > 64)
tremVol = 64;
}
ch->outVol = (uint8_t)tremVol;
ch->status |= IS_Vol;
ch->tremoloPos += ch->tremoloSpeed;
}
static void volSlide(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->volSlideSpeed;
ch->volSlideSpeed = param;
uint8_t newVol = ch->realVol;
if ((param & 0xF0) == 0)
{
newVol -= param;
if ((int8_t)newVol < 0)
newVol = 0;
}
else
{
param >>= 4;
newVol += param;
if (newVol > 64)
newVol = 64;
}
ch->outVol = ch->realVol = newVol;
ch->status |= IS_Vol;
}
static void globalVolSlide(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->globVolSlideSpeed;
ch->globVolSlideSpeed = param;
uint8_t newVol = (uint8_t)song.globalVolume;
if ((param & 0xF0) == 0)
{
newVol -= param;
if ((int8_t)newVol < 0)
newVol = 0;
}
else
{
param >>= 4;
newVol += param;
if (newVol > 64)
newVol = 64;
}
song.globalVolume = newVol;
channel_t *c = channel;
for (int32_t i = 0; i < song.numChannels; i++, c++) // update all voice volumes
c->status |= IS_Vol;
}
static void keyOffCmd(channel_t *ch, uint8_t param)
{
if ((uint8_t)(song.speed-song.tick) == (param & 31))
keyOff(ch);
}
static void panningSlide(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->panningSlideSpeed;
ch->panningSlideSpeed = param;
int16_t newPan = (int16_t)ch->outPan;
if ((param & 0xF0) == 0)
{
newPan -= param;
if (newPan < 0)
newPan = 0;
}
else
{
param >>= 4;
newPan += param;
if (newPan > 255)
newPan = 255;
}
ch->outPan = (uint8_t)newPan;
ch->status |= IS_Pan;
}
static void tremor(channel_t *ch, uint8_t param)
{
if (param == 0)
param = ch->tremorParam;
ch->tremorParam = param;
uint8_t tremorSign = ch->tremorPos & 0x80;
uint8_t tremorData = ch->tremorPos & 0x7F;
tremorData--;
if ((int8_t)tremorData < 0)
{
if (tremorSign == 0x80)
{
tremorSign = 0x00;
tremorData = param & 0x0F;
}
else
{
tremorSign = 0x80;
tremorData = param >> 4;
}
}
ch->tremorPos = tremorSign | tremorData;
ch->outVol = (tremorSign == 0x80) ? ch->realVol : 0;
ch->status |= IS_Vol + IS_QuickVol;
}
static void retrigNote(channel_t *ch, uint8_t param)
{
if (param == 0) // E9x with a param of zero is handled in getNewNote()
return;
if ((song.speed-song.tick) % param == 0)
{
triggerNote(0, 0, 0, ch);
triggerInstrument(ch);
}
}
static void noteCut(channel_t *ch, uint8_t param)
{
if ((uint8_t)(song.speed-song.tick) == param)
{
ch->outVol = ch->realVol = 0;
ch->status |= IS_Vol + IS_QuickVol;
}
}
static void noteDelay(channel_t *ch, uint8_t param)
{
if ((uint8_t)(song.speed-song.tick) == param)
{
const uint8_t note = ch->copyOfInstrAndNote & 0x00FF;
triggerNote(note, 0, 0, ch);
const uint8_t instrument = ch->copyOfInstrAndNote >> 8;
if (instrument > 0)
resetVolumes(ch);
triggerInstrument(ch);
if (ch->volColumnVol >= 0x10 && ch->volColumnVol <= 0x50)
{
ch->outVol = ch->volColumnVol - 16;
ch->realVol = ch->outVol;
}
else if (ch->volColumnVol >= 0xC0 && ch->volColumnVol <= 0xCF)
{
ch->outPan = (ch->volColumnVol & 0x0F) << 4;
}
}
}
static const efxRoutine EJumpTab_TickNonZero[16] =
{
dummy, // 0
dummy, // 1
dummy, // 2
dummy, // 3
dummy, // 4
dummy, // 5
dummy, // 6
dummy, // 7
dummy, // 8
retrigNote, // 9
dummy, // A
dummy, // B
noteCut, // C
noteDelay, // D
dummy, // E
dummy // F
};
static void E_Effects_TickNonZero(channel_t *ch, uint8_t param)
{
EJumpTab_TickNonZero[param >> 4](ch, param & 0xF);
}
static const efxRoutine JumpTab_TickNonZero[36] =
{
arpeggio, // 0
pitchSlideUp, // 1
pitchSlideDown, // 2
portamento, // 3
vibrato, // 4
portamentoPlusVolSlide, // 5
vibratoPlusVolSlide, // 6
tremolo, // 7
dummy, // 8
dummy, // 9
volSlide, // A
dummy, // B
dummy, // C
dummy, // D
E_Effects_TickNonZero, // E
dummy, // F
dummy, // G
globalVolSlide, // H
dummy, // I
dummy, // J
keyOffCmd, // K
dummy, // L
dummy, // M
dummy, // N
dummy, // O
panningSlide, // P
dummy, // Q
doMultiNoteRetrig, // R
dummy, // S
tremor, // T
dummy, // U
dummy, // V
dummy, // W
dummy, // X
dummy, // Y
dummy // Z
};
static void handleEffects_TickNonZero(channel_t *ch)
{
if (ch->channelOff)
return; // muted
// volume column effects
VJumpTab_TickNonZero[ch->volColumnVol >> 4](ch);
// normal effects
if ((ch->efx == 0 && ch->efxData == 0) || ch->efx > 35)
return; // no effect
JumpTab_TickNonZero[ch->efx](ch, ch->efxData);
}
static void getNextPos(void)
{
if (song.tick != 1)
return;
song.row++;
if (song.pattDelTime > 0)
{
song.pattDelTime2 = song.pattDelTime;
song.pattDelTime = 0;
}
if (song.pattDelTime2 > 0)
{
song.pattDelTime2--;
if (song.pattDelTime2 > 0)
song.row--;
}
if (song.pBreakFlag)
{
song.pBreakFlag = false;
song.row = song.pBreakPos;
}
if (song.row >= song.currNumRows || song.posJumpFlag)
{
song.row = song.pBreakPos;
song.pBreakPos = 0;
song.posJumpFlag = false;
if (playMode != PLAYMODE_PATT && playMode != PLAYMODE_RECPATT)
{
if (bxxOverflow)
{
song.songPos = 0;
bxxOverflow = false;
}
else if (++song.songPos >= song.songLength)
{
editor.wavReachedEndFlag = true;
song.songPos = song.songLoopStart;
}
assert(song.songPos <= 255);
song.pattNum = song.orders[song.songPos & 0xFF];
song.currNumRows = patternNumRows[song.pattNum & 0xFF];
}
/*
** Because of a bug in FT2, pattern loop commands will manipulate
** the row the next pattern will begin at (should be 0).
** However, this can overflow the number of rows (length) for that
** pattern and cause out-of-bounds reads. Set to row 0 in this case.
*/
if (song.row >= song.currNumRows)
song.row = 0;
}
}
void pauseMusic(void) // stops reading pattern data
{
musicPaused = true;
while (replayerBusy);
}
void resumeMusic(void) // starts reading pattern data
{
musicPaused = false;
}
void tickReplayer(void) // periodically called from audio callback
{
int32_t i;
channel_t *ch;
if (!songPlaying)
{
ch = channel;
for (i = 0; i < song.numChannels; i++, ch++)
updateVolPanAutoVib(ch);
return;
}
// for song playback counter (hh:mm:ss)
if (song.BPM >= MIN_BPM && song.BPM <= MAX_BPM)
{
song.playbackSecondsFrac += musicTimeTab52[song.BPM-MIN_BPM];
if (song.playbackSecondsFrac >= 1ULL << 52)
{
song.playbackSecondsFrac &= (1ULL << 52)-1;
song.playbackSeconds++;
}
}
bool tickZero = false;
if (--song.tick == 0)
{
song.tick = song.speed;
tickZero = true;
}
song.curReplayerTick = (uint8_t)song.tick; // for audio/video syncing (and recording)
const bool readNewNote = tickZero && (song.pattDelTime2 == 0);
if (readNewNote)
{
// set audio/video syncing variables
song.curReplayerRow = (uint8_t)song.row;
song.curReplayerPattNum = (uint8_t)song.pattNum;
song.curReplayerSongPos = (uint8_t)song.songPos;
// ----------------------------------------------
const note_t *p = nilPatternLine;
if (pattern[song.pattNum] != NULL)
p = &pattern[song.pattNum][song.row * MAX_CHANNELS];
ch = channel;
for (i = 0; i < song.numChannels; i++, ch++, p++)
{
getNewNote(ch, p);
updateVolPanAutoVib(ch);
}
}
else
{
ch = channel;
for (i = 0; i < song.numChannels; i++, ch++)
{
handleEffects_TickNonZero(ch);
updateVolPanAutoVib(ch);
}
}
getNextPos();
}
void resetMusic(void)
{
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
song.tick = 1;
stopVoices();
if (audioWasntLocked)
unlockAudio();
setPos(0, 0, false);
if (!songPlaying)
{
setScrollBarEnd(SB_POS_ED, (song.songLength - 1) + 5);
setScrollBarPos(SB_POS_ED, 0, false);
}
}
void setPos(int16_t songPos, int16_t row, bool resetTimer)
{
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
if (songPos > -1)
{
song.songPos = songPos;
if (song.songLength > 0 && song.songPos >= song.songLength)
song.songPos = song.songLength - 1;
song.pattNum = song.orders[song.songPos];
assert(song.pattNum < MAX_PATTERNS);
song.currNumRows = patternNumRows[song.pattNum];
checkMarkLimits(); // non-FT2 safety
}
if (row > -1)
{
song.row = row;
if (song.row >= song.currNumRows)
song.row = song.currNumRows-1;
}
// if not playing, update local position variables
if (!songPlaying)
{
if (row > -1)
{
editor.row = (uint8_t)row;
ui.updatePatternEditor = true;
}
if (songPos > -1)
{
editor.editPattern = (uint8_t)song.pattNum;
editor.songPos = song.songPos;
ui.updatePosSections = true;
}
}
if (resetTimer)
song.tick = 1;
if (audioWasntLocked)
unlockAudio();
}
void delta2Samp(int8_t *p, int32_t length, uint8_t smpFlags)
{
bool sample16Bit = !!(smpFlags & SAMPLE_16BIT);
bool stereo = !!(smpFlags & SAMPLE_STEREO);
if (stereo)
{
length >>= 1;
if (sample16Bit)
{
int16_t *p16L = (int16_t *)p;
int16_t *p16R = (int16_t *)p + length;
int16_t olds16L = 0;
int16_t olds16R = 0;
for (int32_t i = 0; i < length; i++)
{
const int16_t news16L = p16L[i] + olds16L;
p16L[i] = news16L;
olds16L = news16L;
const int16_t news16R = p16R[i] + olds16R;
p16R[i] = news16R;
olds16R = news16R;
p16L[i] = (int16_t)((olds16L + olds16R) >> 1);
}
}
else // 8-bit
{
int8_t *p8L = (int8_t *)p;
int8_t *p8R = (int8_t *)p + length;
int8_t olds8L = 0;
int8_t olds8R = 0;
for (int32_t i = 0; i < length; i++)
{
const int8_t news8L = p8L[i] + olds8L;
p8L[i] = news8L;
olds8L = news8L;
const int8_t news8R = p8R[i] + olds8R;
p8R[i] = news8R;
olds8R = news8R;
p8L[i] = (int8_t)((olds8L + olds8R) >> 1);
}
}
}
else // mono (normal sample)
{
if (sample16Bit)
{
int16_t *p16 = (int16_t *)p;
int16_t olds16L = 0;
for (int32_t i = 0; i < length; i++)
{
const int16_t news16 = p16[i] + olds16L;
p16[i] = news16;
olds16L = news16;
}
}
else // 8-bit
{
int8_t *p8 = (int8_t *)p;
int8_t olds8L = 0;
for (int32_t i = 0; i < length; i++)
{
const int8_t news8 = p8[i] + olds8L;
p8[i] = news8;
olds8L = news8;
}
}
}
}
void samp2Delta(int8_t *p, int32_t length, uint8_t smpFlags)
{
if (smpFlags & SAMPLE_16BIT)
{
int16_t *p16 = (int16_t *)p;
int16_t newS16 = 0;
for (int32_t i = 0; i < length; i++)
{
const int16_t oldS16 = p16[i];
p16[i] -= newS16;
newS16 = oldS16;
}
}
else // 8-bit
{
int8_t *p8 = (int8_t *)p;
int8_t newS8 = 0;
for (int32_t i = 0; i < length; i++)
{
const int8_t oldS8 = p8[i];
p8[i] -= newS8;
newS8 = oldS8;
}
}
}
bool allocateInstr(int16_t insNum)
{
if (instr[insNum] != NULL)
return false; // already allocated
instr_t *p = (instr_t *)malloc(sizeof (instr_t));
if (p == NULL)
return false;
memset(p, 0, sizeof (instr_t));
sample_t *s = p->smp;
for (int32_t i = 0; i < MAX_SMP_PER_INST; i++, s++)
{
s->panning = 128;
s->volume = 64;
}
setStdEnvelope(p, 0, 3);
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
instr[insNum] = p;
if (audioWasntLocked)
unlockAudio();
return true;
}
void freeInstr(int32_t insNum)
{
if (instr[insNum] == NULL)
return; // not allocated
pauseAudio(); // channel instrument pointers are now cleared
sample_t *s = instr[insNum]->smp;
for (int32_t i = 0; i < MAX_SMP_PER_INST; i++, s++) // free sample data
freeSmpData(s);
free(instr[insNum]);
instr[insNum] = NULL;
resumeAudio();
}
void freeAllInstr(void)
{
pauseAudio(); // channel instrument pointers are now cleared
for (int32_t i = 1; i <= MAX_INST; i++)
{
if (instr[i] != NULL)
{
sample_t *s = instr[i]->smp;
for (int32_t j = 0; j < MAX_SMP_PER_INST; j++, s++) // free sample data
freeSmpData(s);
free(instr[i]);
instr[i] = NULL;
}
}
resumeAudio();
}
void freeSample(int16_t insNum, int16_t smpNum)
{
if (instr[insNum] == NULL)
return; // instrument not allocated
pauseAudio(); // voice sample pointers are now cleared
sample_t *s = &instr[insNum]->smp[smpNum];
freeSmpData(s);
memset(s, 0, sizeof (sample_t));
s->panning = 128;
s->volume = 64;
resumeAudio();
}
void freeAllPatterns(void)
{
pauseAudio();
for (int32_t i = 0; i < MAX_PATTERNS; i++)
{
if (pattern[i] != NULL)
{
free(pattern[i]);
pattern[i] = NULL;
}
}
resumeAudio();
}
void setStdEnvelope(instr_t *ins, int16_t i, uint8_t type)
{
if (ins == NULL)
return;
pauseMusic();
if (type & 1)
{
memcpy(ins->volEnvPoints, config.stdEnvPoints[i][0], 2*2*12);
ins->volEnvLength = (uint8_t)config.stdVolEnvLength[i];
ins->volEnvSustain = (uint8_t)config.stdVolEnvSustain[i];
ins->volEnvLoopStart = (uint8_t)config.stdVolEnvLoopStart[i];
ins->volEnvLoopEnd = (uint8_t)config.stdVolEnvLoopEnd[i];
ins->fadeout = config.stdFadeout[i];
ins->autoVibRate = (uint8_t)config.stdVibRate[i];
ins->autoVibDepth = (uint8_t)config.stdVibDepth[i];
ins->autoVibSweep = (uint8_t)config.stdVibSweep[i];
ins->autoVibType = (uint8_t)config.stdVibType[i];
ins->volEnvFlags = (uint8_t)config.stdVolEnvFlags[i];
}
if (type & 2)
{
memcpy(ins->panEnvPoints, config.stdEnvPoints[i][1], 2*2*12);
ins->panEnvLength = (uint8_t)config.stdPanEnvLength[0];
ins->panEnvSustain = (uint8_t)config.stdPanEnvSustain[0];
ins->panEnvLoopStart = (uint8_t)config.stdPanEnvLoopStart[0];
ins->panEnvLoopEnd = (uint8_t)config.stdPanEnvLoopEnd[0];
ins->panEnvFlags = (uint8_t)config.stdPanEnvFlags[0];
}
resumeMusic();
}
void setNoEnvelope(instr_t *ins)
{
if (ins == NULL)
return;
pauseMusic();
memcpy(ins->volEnvPoints, config.stdEnvPoints[0][0], 2*2*12);
ins->volEnvLength = (uint8_t)config.stdVolEnvLength[0];
ins->volEnvSustain = (uint8_t)config.stdVolEnvSustain[0];
ins->volEnvLoopStart = (uint8_t)config.stdVolEnvLoopStart[0];
ins->volEnvLoopEnd = (uint8_t)config.stdVolEnvLoopEnd[0];
ins->volEnvFlags = 0;
memcpy(ins->panEnvPoints, config.stdEnvPoints[0][1], 2*2*12);
ins->panEnvLength = (uint8_t)config.stdPanEnvLength[0];
ins->panEnvSustain = (uint8_t)config.stdPanEnvSustain[0];
ins->panEnvLoopStart = (uint8_t)config.stdPanEnvLoopStart[0];
ins->panEnvLoopEnd = (uint8_t)config.stdPanEnvLoopEnd[0];
ins->panEnvFlags = 0;
ins->fadeout = 0;
ins->autoVibRate = 0;
ins->autoVibDepth = 0;
ins->autoVibSweep = 0;
ins->autoVibType = 0;
resumeMusic();
}
bool patternEmpty(uint16_t pattNum)
{
if (pattern[pattNum] == NULL)
return true;
const uint8_t *scanPtr = (const uint8_t *)pattern[pattNum];
const uint32_t scanLen = patternNumRows[pattNum] * TRACK_WIDTH;
for (uint32_t i = 0; i < scanLen; i++)
{
if (scanPtr[i] != 0)
return false;
}
return true;
}
void updateChanNums(void)
{
assert(!(song.numChannels & 1));
const int32_t maxChannelsShown = getMaxVisibleChannels();
int32_t channelsShown = song.numChannels;
if (channelsShown > maxChannelsShown)
channelsShown = maxChannelsShown;
ui.numChannelsShown = (uint8_t)channelsShown;
ui.pattChanScrollShown = (song.numChannels > maxChannelsShown);
if (ui.patternEditorShown)
{
if (ui.channelOffset > song.numChannels-ui.numChannelsShown)
setScrollBarPos(SB_CHAN_SCROLL, song.numChannels - ui.numChannelsShown, true);
}
if (ui.pattChanScrollShown)
{
if (ui.patternEditorShown)
{
showScrollBar(SB_CHAN_SCROLL);
showPushButton(PB_CHAN_SCROLL_LEFT);
showPushButton(PB_CHAN_SCROLL_RIGHT);
}
setScrollBarEnd(SB_CHAN_SCROLL, song.numChannels);
setScrollBarPageLength(SB_CHAN_SCROLL, ui.numChannelsShown);
}
else
{
hideScrollBar(SB_CHAN_SCROLL);
hidePushButton(PB_CHAN_SCROLL_LEFT);
hidePushButton(PB_CHAN_SCROLL_RIGHT);
setScrollBarPos(SB_CHAN_SCROLL, 0, false);
ui.channelOffset = 0;
}
if (cursor.ch >= ui.channelOffset+ui.numChannelsShown)
cursor.ch = ui.channelOffset+ui.numChannelsShown - 1;
}
void conv8BitSample(int8_t *p, int32_t length, bool stereo) // changes sample sign
{
if (stereo)
{
length >>= 1;
int8_t *p2 = &p[length];
for (int32_t i = 0; i < length; i++)
{
const int8_t l = p[i] ^ 0x80;
const int8_t r = p2[i] ^ 0x80;
p[i] = (int8_t)((l + r) >> 1);
}
}
else
{
for (int32_t i = 0; i < length; i++)
p[i] ^= 0x80;
}
}
void conv16BitSample(int8_t *p, int32_t length, bool stereo) // changes sample sign
{
int16_t *p16_1 = (int16_t *)p;
if (stereo)
{
length >>= 1;
int16_t *p16_2 = (int16_t *)p + length;
for (int32_t i = 0; i < length; i++)
{
const int16_t l = p16_1[i] ^ 0x8000;
const int16_t r = p16_2[i] ^ 0x8000;
p16_1[i] = (int16_t)((l + r) >> 1);
}
}
else
{
for (int32_t i = 0; i < length; i++)
p16_1[i] ^= 0x8000;
}
}
void closeReplayer(void)
{
freeAllInstr();
freeAllPatterns();
// free reserved instruments
if (instr[0] != NULL)
{
free(instr[0]);
instr[0] = NULL;
}
if (instr[130] != NULL)
{
free(instr[130]);
instr[130] = NULL;
}
if (instr[131] != NULL)
{
free(instr[131]);
instr[131] = NULL;
}
freeCubicSplineTable();
freeWindowedSincTables();
}
bool setupReplayer(void)
{
for (int32_t i = 0; i < MAX_PATTERNS; i++)
patternNumRows[i] = 64;
playMode = PLAYMODE_IDLE;
songPlaying = false;
// unmute all channels (must be done before resetChannels() call)
for (int32_t i = 0; i < MAX_CHANNELS; i++)
editor.chnMode[i] = 1;
resetChannels();
song.songLength = 1;
song.numChannels = 8;
editor.BPM = song.BPM = 125;
editor.speed = song.initialSpeed = song.speed = 6;
editor.globalVolume = song.globalVolume = 64;
audio.linearPeriodsFlag = true;
note2Period = linearPeriods;
calcPanningTable();
setPos(0, 0, true); // important!
if (!allocateInstr(0))
{
showErrorMsgBox("Not enough memory!");
return false;
}
instr[0]->smp[0].volume = 0;
if (!allocateInstr(130))
{
showErrorMsgBox("Not enough memory!");
return false;
}
memset(instr[130], 0, sizeof (instr_t));
if (!allocateInstr(131)) // Instr. Ed. display instrument for unallocated/empty instruments
{
showErrorMsgBox("Not enough memory!");
return false;
}
memset(instr[131], 0, sizeof (instr_t));
for (int32_t i = 0; i < 16; i++)
instr[131]->smp[i].panning = 128;
editor.tmpPattern = 65535; // pattern editor update/redraw kludge
return true;
}
void startPlaying(int8_t mode, int16_t row)
{
lockMixerCallback();
assert(mode != PLAYMODE_IDLE && mode != PLAYMODE_EDIT);
if (mode == PLAYMODE_PATT || mode == PLAYMODE_RECPATT)
setPos(-1, row, true);
else
setPos(editor.songPos, row, true);
playMode = mode;
songPlaying = true;
resetReplayerState();
resetPlaybackTime();
// non-FT2 fix: If song speed was 0, set it back to initial speed on play
if (song.speed == 0)
song.speed = song.initialSpeed;
// zero tick sample counter so that it will instantly initiate a tick
audio.tickSampleCounterFrac = audio.tickSampleCounter = 0;
unlockMixerCallback();
ui.updatePosSections = true;
ui.updatePatternEditor = true;
}
void stopPlaying(void)
{
bool songWasPlaying = songPlaying;
playMode = PLAYMODE_IDLE;
songPlaying = false;
if (config.killNotesOnStopPlay)
{
// safely kills all voices
lockMixerCallback();
unlockMixerCallback();
}
else
{
for (uint8_t i = 0; i < MAX_CHANNELS; i++)
playTone(i, 0, NOTE_OFF, -1, 0, 0);
}
// if song was playing, update local row (fixes certain glitches)
if (songWasPlaying)
editor.row = song.row;
#ifdef HAS_MIDI
midi.currMIDIVibDepth = 0;
midi.currMIDIPitch = 0;
#endif
memset(editor.keyOnTab, 0, sizeof (editor.keyOnTab));
// kludge to prevent UI from being out of sync with replayer vars on stop
song.songPos = editor.songPos;
song.row = editor.row;
song.pattNum = editor.editPattern;
ui.updatePosSections = true;
ui.updatePatternEditor = true;
// certain non-FT2 fixes
song.tick = editor.tick = 1;
song.globalVolume = editor.globalVolume = 64;
ui.drawGlobVolFlag = true;
}
// from keyboard/smp. ed.
void playTone(uint8_t chNum, uint8_t insNum, uint8_t note, int8_t vol, uint16_t midiVibDepth, uint16_t midiPitch)
{
instr_t *ins = instr[insNum];
if (ins == NULL)
return;
assert(chNum < MAX_CHANNELS && insNum <= MAX_INST && note <= NOTE_OFF);
channel_t *ch = &channel[chNum];
// FT2 bugfix: Don't play tone if certain requirements are not met
if (note != NOTE_OFF)
{
if (note == 0 || note > 96)
return;
sample_t *s = &ins->smp[ins->note2SampleLUT[note-1] & 0xF];
int16_t finalNote = (int16_t)note + s->relativeNote;
if (s->dataPtr == NULL || s->length == 0 || finalNote <= 0 || finalNote >= 12*10)
return;
}
// -------------------
lockAudio();
if (insNum != 0 && note != NOTE_OFF)
{
ch->copyOfInstrAndNote = (insNum << 8) | (ch->copyOfInstrAndNote & 0xFF);
ch->instrNum = insNum;
}
ch->copyOfInstrAndNote = (ch->copyOfInstrAndNote & 0xFF00) | note;
ch->efx = 0;
ch->efxData = 0;
triggerNote(note, 0, 0, ch);
if (note != NOTE_OFF)
{
resetVolumes(ch);
triggerInstrument(ch);
if (vol != -1) // if jamming note keys, vol -1 = use sample's volume
{
ch->realVol = vol;
ch->outVol = vol;
ch->oldVol = vol;
}
}
ch->midiVibDepth = midiVibDepth;
ch->midiPitch = midiPitch;
updateVolPanAutoVib(ch);
unlockAudio();
}
// smp. ed.
void playSample(uint8_t chNum, uint8_t insNum, uint8_t smpNum, uint8_t note, uint16_t midiVibDepth, uint16_t midiPitch)
{
if (instr[insNum] == NULL)
return;
// for sampling playback line in Smp. Ed.
lastChInstr[chNum].instrNum = 255;
lastChInstr[chNum].smpNum = 255;
editor.curPlayInstr = 255;
editor.curPlaySmp = 255;
assert(chNum < MAX_CHANNELS && insNum <= MAX_INST && smpNum < MAX_SMP_PER_INST && note <= NOTE_OFF);
channel_t *ch = &channel[chNum];
memcpy(&instr[130]->smp[0], &instr[insNum]->smp[smpNum], sizeof (sample_t));
uint8_t vol = instr[insNum]->smp[smpNum].volume;
lockAudio();
ch->instrNum = 130;
ch->copyOfInstrAndNote = (ch->instrNum << 8) | note;
ch->efx = 0;
triggerNote(note, 0, 0, ch);
if (note != NOTE_OFF)
{
resetVolumes(ch);
triggerInstrument(ch);
ch->realVol = vol;
ch->outVol = vol;
ch->oldVol = vol;
}
ch->midiVibDepth = midiVibDepth;
ch->midiPitch = midiPitch;
updateVolPanAutoVib(ch);
unlockAudio();
while (ch->status & IS_Trigger); // wait for sample to latch in mixer
// for sampling playback line in Smp. Ed.
editor.curPlayInstr = editor.curInstr;
editor.curPlaySmp = editor.curSmp;
}
// smp. ed.
void playRange(uint8_t chNum, uint8_t insNum, uint8_t smpNum, uint8_t note, uint16_t midiVibDepth, uint16_t midiPitch, int32_t smpOffset, int32_t length)
{
if (instr[insNum] == NULL)
return;
// for sampling playback line in Smp. Ed.
lastChInstr[chNum].instrNum = 255;
lastChInstr[chNum].smpNum = 255;
editor.curPlayInstr = 255;
editor.curPlaySmp = 255;
assert(chNum < MAX_CHANNELS && insNum <= MAX_INST && smpNum < MAX_SMP_PER_INST && note <= NOTE_OFF);
channel_t *ch = &channel[chNum];
sample_t *s = &instr[130]->smp[0];
memcpy(s, &instr[insNum]->smp[smpNum], sizeof (sample_t));
uint8_t vol = instr[insNum]->smp[smpNum].volume;
lockAudio();
s->length = smpOffset + length;
s->loopStart = 0;
s->loopLength = 0;
DISABLE_LOOP(s->flags); // disable loop on sample #129 (placeholder)
int32_t samplePlayOffset = smpOffset;
ch->instrNum = 130;
ch->copyOfInstrAndNote = (ch->instrNum << 8) | note;
ch->efx = 0;
ch->efxData = 0;
triggerNote(note, 0, 0, ch);
ch->smpStartPos = samplePlayOffset;
if (note != NOTE_OFF)
{
resetVolumes(ch);
triggerInstrument(ch);
ch->realVol = vol;
ch->outVol = vol;
ch->oldVol = vol;
}
ch->midiVibDepth = midiVibDepth;
ch->midiPitch = midiPitch;
updateVolPanAutoVib(ch);
unlockAudio();
while (ch->status & IS_Trigger); // wait for sample to latch in mixer
// for sampling playback line in Smp. Ed.
editor.curPlayInstr = editor.curInstr;
editor.curPlaySmp = editor.curSmp;
}
void stopVoices(void)
{
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
channel_t *ch = channel;
for (int32_t i = 0; i < MAX_CHANNELS; i++, ch++)
{
lastChInstr[i].smpNum = 255;
lastChInstr[i].instrNum = 255;
ch->copyOfInstrAndNote = 0;
ch->relativeNote = 0;
ch->smpNum = 0;
ch->smpPtr = NULL;
ch->instrNum = 0;
ch->instrPtr = instr[0]; // important: set instrument pointer to instr 0 (placeholder instrument)
ch->status = IS_Vol;
ch->realVol = 0;
ch->outVol = 0;
ch->oldVol = 0;
ch->fFinalVol = 0.0f;
ch->oldPan = 128;
ch->outPan = 128;
ch->finalPan = 128;
ch->vibratoDepth = 0; // clear it because it can be set from the volumn column
ch->midiVibDepth = 0;
ch->midiPitch = 0;
ch->portamentoDirection = 0; // FT2 bugfix: weird 3xx behavior if not used with note
stopVoice(i);
}
// for sampling playback line in Smp. Ed.
editor.curPlayInstr = 255;
editor.curPlaySmp = 255;
stopAllScopes();
resetCachedMixerVars();
// wait for scope thread to finish, so that we know pointers aren't deprecated
while (editor.scopeThreadBusy);
if (audioWasntLocked)
unlockAudio();
}
void setNewSongPos(int32_t pos)
{
resetReplayerState(); // FT2 bugfix
setPos((int16_t)pos, 0, true);
// non-FT2 fix: If song speed was 0, set it back to initial speed
if (song.speed == 0)
song.speed = song.initialSpeed;
}
void decSongPos(void)
{
if (song.songPos == 0)
return;
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
if (song.songPos > 0)
setNewSongPos(song.songPos - 1);
if (audioWasntLocked)
unlockAudio();
}
void incSongPos(void)
{
if (song.songPos == song.songLength-1)
return;
const bool audioWasntLocked = !audio.locked;
if (audioWasntLocked)
lockAudio();
if (song.songPos < song.songLength-1)
setNewSongPos(song.songPos + 1);
if (audioWasntLocked)
unlockAudio();
}
void decCurIns(void)
{
if (editor.curInstr <= 1)
return;
editor.curInstr--;
if ((editor.curInstr > 0x40 && !editor.instrBankSwapped) || (editor.curInstr <= 0x40 && editor.instrBankSwapped))
pbSwapInstrBank();
editor.instrBankOffset = ((editor.curInstr - 1) / 8) * 8;
updateTextBoxPointers();
updateNewInstrument();
if (ui.advEditShown)
updateAdvEdit();
}
void incCurIns(void)
{
if (editor.curInstr >= MAX_INST)
return;
editor.curInstr++;
if ((editor.curInstr > 0x40 && !editor.instrBankSwapped) || (editor.curInstr <= 0x40 && editor.instrBankSwapped))
pbSwapInstrBank();
editor.instrBankOffset = ((editor.curInstr - 1) / 8) * 8;
if (editor.instrBankOffset > MAX_INST-8)
editor.instrBankOffset = MAX_INST-8;
updateTextBoxPointers();
updateNewInstrument();
if (ui.advEditShown)
updateAdvEdit();
}
void decCurSmp(void)
{
if (editor.curSmp == 0)
return;
editor.curSmp--;
editor.sampleBankOffset = (editor.curSmp / 5) * 5;
setScrollBarPos(SB_SAMPLE_LIST, editor.sampleBankOffset, true);
updateTextBoxPointers();
updateNewSample();
}
void incCurSmp(void)
{
if (editor.curSmp >= MAX_SMP_PER_INST-1)
return;
editor.curSmp++;
editor.sampleBankOffset = (editor.curSmp / 5) * 5;
if (editor.sampleBankOffset > MAX_SMP_PER_INST-5)
editor.sampleBankOffset = MAX_SMP_PER_INST-5;
setScrollBarPos(SB_SAMPLE_LIST, editor.sampleBankOffset, true);
updateTextBoxPointers();
updateNewSample();
}
void pbPlaySong(void)
{
startPlaying(PLAYMODE_SONG, 0);
}
void pbPlayPtn(void)
{
startPlaying(PLAYMODE_PATT, 0);
}
void pbRecSng(void)
{
startPlaying(PLAYMODE_RECSONG, 0);
}
void pbRecPtn(void)
{
startPlaying(PLAYMODE_RECPATT, 0);
}
void setSyncedReplayerVars(void)
{
uint8_t scopeUpdateStatus[MAX_CHANNELS];
pattSyncEntry = NULL;
chSyncEntry = NULL;
memset(scopeUpdateStatus, 0, sizeof (scopeUpdateStatus)); // this is needed
uint64_t frameTime64 = SDL_GetPerformanceCounter();
// handle channel sync queue
while (chQueueClearing);
while (chQueueReadSize() > 0)
{
if (frameTime64 < getChQueueTimestamp())
break; // we have no more stuff to render for now
chSyncEntry = chQueuePeek();
if (chSyncEntry == NULL)
break;
for (int32_t i = 0; i < song.numChannels; i++)
scopeUpdateStatus[i] |= chSyncEntry->channels[i].status; // yes, OR the status
if (!chQueuePop())
break;
}
/* Extra validation because of possible issues when the buffer is full
** and positions are being reset, which is not entirely thread safe.
*/
if (chSyncEntry != NULL && chSyncEntry->timestamp == 0)
chSyncEntry = NULL;
// handle pattern sync queue
while (pattQueueClearing);
while (pattQueueReadSize() > 0)
{
if (frameTime64 < getPattQueueTimestamp())
break; // we have no more stuff to render for now
pattSyncEntry = pattQueuePeek();
if (pattSyncEntry == NULL)
break;
if (!pattQueuePop())
break;
}
/* Extra validation because of possible issues when the buffer is full
** and positions are being reset, which is not entirely thread safe.
*/
if (pattSyncEntry != NULL && pattSyncEntry->timestamp == 0)
pattSyncEntry = NULL;
// do actual updates
if (chSyncEntry != NULL)
{
handleScopesFromChQueue(chSyncEntry, scopeUpdateStatus);
ui.drawReplayerPianoFlag = true;
}
if (!songPlaying || pattSyncEntry == NULL)
return;
// we have a new tick
editor.tick = pattSyncEntry->tick;
if (editor.BPM != pattSyncEntry->BPM)
{
editor.BPM = pattSyncEntry->BPM;
ui.drawBPMFlag = true;
}
if (editor.speed != pattSyncEntry->speed)
{
editor.speed = pattSyncEntry->speed;
ui.drawSpeedFlag = true;
}
if (editor.globalVolume != pattSyncEntry->globalVolume)
{
editor.globalVolume = pattSyncEntry->globalVolume;
ui.drawGlobVolFlag = true;
}
if (editor.songPos != pattSyncEntry->songPos)
{
editor.songPos = pattSyncEntry->songPos;
ui.drawPosEdFlag = true;
}
// somewhat of a kludge...
if (editor.tmpPattern != pattSyncEntry->pattNum || editor.row != pattSyncEntry->row)
{
// set pattern number
editor.editPattern = editor.tmpPattern = pattSyncEntry->pattNum;
checkMarkLimits();
ui.drawPattNumLenFlag = true;
// set row
editor.row = (uint8_t)pattSyncEntry->row;
ui.updatePatternEditor = true;
}
}