ref: c4aa3c9df5772a8cf83bea4bfeb698734bc5b9e0
dir: /src/pt2_modplayer.c/
/* Very accurate C port of ProTracker 2.3D's replayer by 8bitbubsy, slightly modified.
** Earlier versions of the PT clone used a completely different and less accurate replayer.
*/
// for finding memory leaks in debug mode with Visual Studio
#if defined _DEBUG && defined _MSC_VER
#include <crtdbg.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <math.h>
#include "pt2_header.h"
#include "pt2_audio.h"
#include "pt2_helpers.h"
#include "pt2_palette.h"
#include "pt2_tables.h"
#include "pt2_modloader.h"
#include "pt2_config.h"
#include "pt2_sampler.h"
#include "pt2_visuals.h"
#include "pt2_textout.h"
#include "pt2_scopes.h"
extern bool forceMixerOff; // pt_audio.c
static bool posJumpAssert, pBreakFlag, updateUIPositions, modHasBeenPlayed;
static int8_t pBreakPosition, oldRow, modPattern;
static uint8_t pattDelTime, setBPMFlag, lowMask = 0xFF, pattDelTime2, oldSpeed;
static int16_t modOrder, oldPattern, oldOrder;
static uint16_t modBPM, oldBPM;
static const int8_t vuMeterHeights[65] =
{
0, 0, 1, 2, 2, 3, 4, 5,
5, 6, 7, 8, 8, 9, 10, 11,
11, 12, 13, 14, 14, 15, 16, 17,
17, 18, 19, 20, 20, 21, 22, 23,
23, 24, 25, 26, 26, 27, 28, 29,
29, 30, 31, 32, 32, 33, 34, 35,
35, 36, 37, 38, 38, 39, 40, 41,
41, 42, 43, 44, 44, 45, 46, 47,
47
};
static const uint8_t funkTable[16] = // EFx (FunkRepeat/InvertLoop)
{
0x00, 0x05, 0x06, 0x07, 0x08, 0x0A, 0x0B, 0x0D,
0x10, 0x13, 0x16, 0x1A, 0x20, 0x2B, 0x40, 0x80
};
void modSetSpeed(uint8_t speed)
{
editor.modSpeed = speed;
modEntry->currSpeed = speed;
editor.modTick = 0;
}
void doStopIt(void)
{
moduleChannel_t *c;
uint8_t i;
resetCachedMixerPeriod();
pattDelTime = 0;
pattDelTime2 = 0;
editor.playMode = PLAY_MODE_NORMAL;
editor.currMode = MODE_IDLE;
editor.songPlaying = false;
pointerSetMode(POINTER_MODE_IDLE, DO_CARRY);
for (i = 0; i < AMIGA_VOICES; i++)
{
c = &modEntry->channels[i];
c->n_wavecontrol = 0;
c->n_glissfunk = 0;
c->n_finetune = 0;
c->n_loopcount = 0;
}
}
void setPattern(int16_t pattern)
{
modPattern = pattern;
if (modPattern > MAX_PATTERNS-1)
modPattern = MAX_PATTERNS-1;
modEntry->currPattern = modPattern;
}
void storeTempVariables(void) // this one is accessed in other files, so non-static
{
oldBPM = modEntry->currBPM;
oldRow = modEntry->currRow;
oldOrder = modEntry->currOrder;
oldSpeed = modEntry->currSpeed;
oldPattern = modEntry->currPattern;
}
static void setVUMeterHeight(moduleChannel_t *ch)
{
uint8_t vol;
if (editor.muted[ch->n_chanindex])
return;
vol = ch->n_volume;
if ((ch->n_cmd & 0xF00) == 0xC00) // handle Cxx effect
vol = ch->n_cmd & 0xFF;
if (vol > 64)
vol = 64;
editor.vuMeterVolumes[ch->n_chanindex] = vuMeterHeights[vol];
}
static void updateFunk(moduleChannel_t *ch)
{
int8_t funkspeed;
funkspeed = ch->n_glissfunk >> 4;
if (funkspeed == 0)
return;
ch->n_funkoffset += funkTable[funkspeed];
if (ch->n_funkoffset >= 128)
{
ch->n_funkoffset = 0;
if (ch->n_loopstart != NULL && ch->n_wavestart != NULL) // SAFETY BUG FIX
{
if (++ch->n_wavestart >= ch->n_loopstart+ch->n_replen)
ch->n_wavestart = ch->n_loopstart;
*ch->n_wavestart = -1 - *ch->n_wavestart;
}
}
}
static void setGlissControl(moduleChannel_t *ch)
{
ch->n_glissfunk = (ch->n_glissfunk & 0xF0) | (ch->n_cmd & 0x0F);
}
static void setVibratoControl(moduleChannel_t *ch)
{
ch->n_wavecontrol = (ch->n_wavecontrol & 0xF0) | (ch->n_cmd & 0x0F);
}
static void setFineTune(moduleChannel_t *ch)
{
ch->n_finetune = ch->n_cmd & 0xF;
}
static void jumpLoop(moduleChannel_t *ch)
{
uint8_t tempParam;
if (editor.modTick != 0)
return;
if ((ch->n_cmd & 0xF) == 0)
{
ch->n_pattpos = modEntry->row;
}
else
{
if (ch->n_loopcount == 0)
{
ch->n_loopcount = ch->n_cmd & 0xF;
}
else
{
if (--ch->n_loopcount == 0)
return;
}
pBreakPosition = ch->n_pattpos;
pBreakFlag = 1;
if (editor.isWAVRendering)
{
for (tempParam = pBreakPosition; tempParam <= modEntry->row; tempParam++)
editor.rowVisitTable[(modOrder * MOD_ROWS) + tempParam] = false;
}
}
}
static void setTremoloControl(moduleChannel_t *ch)
{
ch->n_wavecontrol = ((ch->n_cmd & 0xF) << 4) | (ch->n_wavecontrol & 0xF);
}
static void karplusStrong(moduleChannel_t *ch)
{
(void)ch; // this effect is *horrible* and never used, I'm not implementing it.
}
static void doRetrg(moduleChannel_t *ch)
{
paulaSetData(ch->n_chanindex, ch->n_start); // n_start is increased on 9xx
paulaSetLength(ch->n_chanindex, ch->n_length);
paulaSetPeriod(ch->n_chanindex, ch->n_period);
paulaStartDMA(ch->n_chanindex);
// these take effect after the current DMA cycle is done
paulaSetData(ch->n_chanindex, ch->n_loopstart);
paulaSetLength(ch->n_chanindex, ch->n_replen);
updateSpectrumAnalyzer(ch->n_volume, ch->n_period);
setVUMeterHeight(ch);
}
static void retrigNote(moduleChannel_t *ch)
{
if ((ch->n_cmd & 0xF) > 0)
{
if (editor.modTick == 0 && (ch->n_note & 0xFFF) > 0)
return;
if (editor.modTick % (ch->n_cmd & 0xF) == 0)
doRetrg(ch);
}
}
static void volumeSlide(moduleChannel_t *ch)
{
uint8_t cmd = ch->n_cmd & 0xFF;
if ((cmd & 0xF0) == 0)
{
ch->n_volume -= cmd & 0x0F;
if (ch->n_volume < 0)
ch->n_volume = 0;
}
else
{
ch->n_volume += cmd >> 4;
if (ch->n_volume > 64)
ch->n_volume = 64;
}
}
static void volumeFineUp(moduleChannel_t *ch)
{
if (editor.modTick == 0)
{
ch->n_volume += ch->n_cmd & 0xF;
if (ch->n_volume > 64)
ch->n_volume = 64;
}
}
static void volumeFineDown(moduleChannel_t *ch)
{
if (editor.modTick == 0)
{
ch->n_volume -= ch->n_cmd & 0xF;
if (ch->n_volume < 0)
ch->n_volume = 0;
}
}
static void noteCut(moduleChannel_t *ch)
{
if (editor.modTick == (ch->n_cmd & 0xF))
ch->n_volume = 0;
}
static void noteDelay(moduleChannel_t *ch)
{
if (editor.modTick == (ch->n_cmd & 0xF) && (ch->n_note & 0xFFF) > 0)
doRetrg(ch);
}
static void patternDelay(moduleChannel_t *ch)
{
if (editor.modTick == 0 && pattDelTime2 == 0)
pattDelTime = (ch->n_cmd & 0xF) + 1;
}
static void funkIt(moduleChannel_t *ch)
{
if (editor.modTick == 0)
{
ch->n_glissfunk = ((ch->n_cmd & 0xF) << 4) | (ch->n_glissfunk & 0xF);
if ((ch->n_glissfunk & 0xF0) > 0)
updateFunk(ch);
}
}
static void positionJump(moduleChannel_t *ch)
{
modOrder = (ch->n_cmd & 0xFF) - 1; // 0xFF (B00) jumps to pat 0
pBreakPosition = 0;
posJumpAssert = true;
}
static void volumeChange(moduleChannel_t *ch)
{
ch->n_volume = ch->n_cmd & 0xFF;
if ((uint8_t)ch->n_volume > 64) /* unsigned comparison is important here */
ch->n_volume = 64;
}
static void patternBreak(moduleChannel_t *ch)
{
pBreakPosition = (((ch->n_cmd & 0xF0) >> 4) * 10) + (ch->n_cmd & 0x0F);
if ((uint8_t)pBreakPosition > 63) /* unsigned comparison is important here */
pBreakPosition = 0;
posJumpAssert = true;
}
static void setSpeed(moduleChannel_t *ch)
{
if ((ch->n_cmd & 0xFF) > 0)
{
editor.modTick = 0;
if ((editor.timingMode == TEMPO_MODE_VBLANK) || ((ch->n_cmd & 0xFF) < 32))
modSetSpeed(ch->n_cmd & 0xFF);
else
setBPMFlag = ch->n_cmd & 0xFF; // CIA doesn't refresh its registers until the next interrupt, so change it later
}
else
{
editor.songPlaying = false;
editor.playMode = PLAY_MODE_NORMAL;
editor.currMode = MODE_IDLE;
pointerSetMode(POINTER_MODE_IDLE, DO_CARRY);
}
}
static void arpeggio(moduleChannel_t *ch)
{
uint8_t dat;
const int16_t *arpPointer;
dat = editor.modTick % 3;
if (dat == 0)
{
paulaSetPeriod(ch->n_chanindex, ch->n_period);
}
else
{
if (dat == 1) dat = (ch->n_cmd & 0xF0) >> 4;
else if (dat == 2) dat = ch->n_cmd & 0x0F;
arpPointer = &periodTable[ch->n_finetune * 37];
for (uint8_t i = 0; i < 37; i++)
{
if (ch->n_period >= arpPointer[i])
{
paulaSetPeriod(ch->n_chanindex, arpPointer[i+dat]);
break;
}
}
}
}
static void portaUp(moduleChannel_t *ch)
{
ch->n_period -= (ch->n_cmd & 0xFF) & lowMask;
lowMask = 0xFF;
if ((ch->n_period & 0xFFF) < 113)
ch->n_period = (ch->n_period & 0xF000) | 113;
paulaSetPeriod(ch->n_chanindex, ch->n_period & 0xFFF);
}
static void portaDown(moduleChannel_t *ch)
{
ch->n_period += (ch->n_cmd & 0xFF) & lowMask;
lowMask = 0xFF;
if ((ch->n_period & 0xFFF) > 856)
ch->n_period = (ch->n_period & 0xF000) | 856;
paulaSetPeriod(ch->n_chanindex, ch->n_period & 0xFFF);
}
static void filterOnOff(moduleChannel_t *ch)
{
setLEDFilter(!(ch->n_cmd & 1));
}
static void finePortaUp(moduleChannel_t *ch)
{
if (editor.modTick == 0)
{
lowMask = 0xF;
portaUp(ch);
}
}
static void finePortaDown(moduleChannel_t *ch)
{
if (editor.modTick == 0)
{
lowMask = 0xF;
portaDown(ch);
}
}
static void setTonePorta(moduleChannel_t *ch)
{
uint8_t i;
const int16_t *portaPointer;
uint16_t note;
note = ch->n_note & 0xFFF;
portaPointer = &periodTable[ch->n_finetune * 37];
i = 0;
while (true)
{
// portaPointer[36] = 0, so i=36 is safe
if (note >= portaPointer[i])
break;
if (++i >= 37)
{
i = 35;
break;
}
}
if ((ch->n_finetune & 8) && i > 0)
i--;
ch->n_wantedperiod = portaPointer[i];
ch->n_toneportdirec = 0;
if (ch->n_period == ch->n_wantedperiod) ch->n_wantedperiod = 0;
else if (ch->n_period > ch->n_wantedperiod) ch->n_toneportdirec = 1;
}
static void tonePortNoChange(moduleChannel_t *ch)
{
uint8_t i;
const int16_t *portaPointer;
if (ch->n_wantedperiod <= 0)
return;
if (ch->n_toneportdirec > 0)
{
ch->n_period -= ch->n_toneportspeed;
if (ch->n_period <= ch->n_wantedperiod)
{
ch->n_period = ch->n_wantedperiod;
ch->n_wantedperiod = 0;
}
}
else
{
ch->n_period += ch->n_toneportspeed;
if (ch->n_period >= ch->n_wantedperiod)
{
ch->n_period = ch->n_wantedperiod;
ch->n_wantedperiod = 0;
}
}
if ((ch->n_glissfunk & 0xF) == 0)
{
paulaSetPeriod(ch->n_chanindex, ch->n_period);
}
else
{
portaPointer = &periodTable[ch->n_finetune * 37];
i = 0;
while (true)
{
// portaPointer[36] = 0, so i=36 is safe
if (ch->n_period >= portaPointer[i])
break;
if (++i >= 37)
{
i = 35;
break;
}
}
paulaSetPeriod(ch->n_chanindex, portaPointer[i]);
}
}
static void tonePortamento(moduleChannel_t *ch)
{
if ((ch->n_cmd & 0xFF) > 0)
{
ch->n_toneportspeed = ch->n_cmd & 0xFF;
ch->n_cmd &= 0xFF00;
}
tonePortNoChange(ch);
}
static void vibratoNoChange(moduleChannel_t *ch)
{
uint8_t vibratoTemp;
int16_t vibratoData;
vibratoTemp = (ch->n_vibratopos / 4) & 31;
vibratoData = ch->n_wavecontrol & 3;
if (vibratoData == 0)
{
vibratoData = vibratoTable[vibratoTemp];
}
else
{
if (vibratoData == 1)
{
if (ch->n_vibratopos < 0)
vibratoData = 255 - (vibratoTemp * 8);
else
vibratoData = vibratoTemp * 8;
}
else
{
vibratoData = 255;
}
}
vibratoData = (vibratoData * (ch->n_vibratocmd & 0xF)) / 128;
if (ch->n_vibratopos < 0)
vibratoData = ch->n_period - vibratoData;
else
vibratoData = ch->n_period + vibratoData;
paulaSetPeriod(ch->n_chanindex, vibratoData);
ch->n_vibratopos += ((ch->n_vibratocmd >> 4) * 4);
}
static void vibrato(moduleChannel_t *ch)
{
if ((ch->n_cmd & 0xFF) > 0)
{
if ((ch->n_cmd & 0x0F) > 0)
ch->n_vibratocmd = (ch->n_vibratocmd & 0xF0) | (ch->n_cmd & 0x0F);
if ((ch->n_cmd & 0xF0) > 0)
ch->n_vibratocmd = (ch->n_cmd & 0xF0) | (ch->n_vibratocmd & 0x0F);
}
vibratoNoChange(ch);
}
static void tonePlusVolSlide(moduleChannel_t *ch)
{
tonePortNoChange(ch);
volumeSlide(ch);
}
static void vibratoPlusVolSlide(moduleChannel_t *ch)
{
vibratoNoChange(ch);
volumeSlide(ch);
}
static void tremolo(moduleChannel_t *ch)
{
int8_t tremoloTemp;
int16_t tremoloData;
if ((ch->n_cmd & 0xFF) > 0)
{
if ((ch->n_cmd & 0x0F) > 0)
ch->n_tremolocmd = (ch->n_tremolocmd & 0xF0) | (ch->n_cmd & 0x0F);
if ((ch->n_cmd & 0xF0) > 0)
ch->n_tremolocmd = (ch->n_cmd & 0xF0) | (ch->n_tremolocmd & 0x0F);
}
tremoloTemp = (ch->n_tremolopos / 4) & 31;
tremoloData = (ch->n_wavecontrol >> 4) & 3;
if (!tremoloData)
{
tremoloData = vibratoTable[tremoloTemp];
}
else
{
if (tremoloData == 1)
{
if (ch->n_vibratopos < 0) // PT bug, should've been n_tremolopos
tremoloData = 255 - (tremoloTemp * 8);
else
tremoloData = tremoloTemp * 8;
}
else
{
tremoloData = 255;
}
}
tremoloData = (tremoloData * (ch->n_tremolocmd & 0xF)) / 64;
if (ch->n_tremolopos < 0)
{
tremoloData = ch->n_volume - tremoloData;
if (tremoloData < 0)
tremoloData = 0;
}
else
{
tremoloData = ch->n_volume + tremoloData;
if (tremoloData > 64)
tremoloData = 64;
}
paulaSetVolume(ch->n_chanindex, tremoloData);
ch->n_tremolopos += (ch->n_tremolocmd >> 4) * 4;
}
static void sampleOffset(moduleChannel_t *ch)
{
uint16_t newOffset;
if ((ch->n_cmd & 0xFF) > 0)
ch->n_sampleoffset = ch->n_cmd & 0xFF;
newOffset = ch->n_sampleoffset << 7;
if ((int16_t)newOffset < (int16_t)ch->n_length)
{
ch->n_length -= newOffset;
ch->n_start += newOffset*2;
}
else
{
ch->n_length = 1;
}
}
static void E_Commands(moduleChannel_t *ch)
{
uint8_t cmd;
cmd = (ch->n_cmd & 0xF0) >> 4;
switch (cmd)
{
case 0x0: filterOnOff(ch); break;
case 0x1: finePortaUp(ch); break;
case 0x2: finePortaDown(ch); break;
case 0x3: setGlissControl(ch); break;
case 0x4: setVibratoControl(ch); break;
case 0x5: setFineTune(ch); break;
case 0x6: jumpLoop(ch); break;
case 0x7: setTremoloControl(ch); break;
case 0x8: karplusStrong(ch); break;
default: break;
}
if (editor.muted[ch->n_chanindex])
return;
switch (cmd)
{
case 0x9: retrigNote(ch); break;
case 0xA: volumeFineUp(ch); break;
case 0xB: volumeFineDown(ch); break;
case 0xC: noteCut(ch); break;
case 0xD: noteDelay(ch); break;
case 0xE: patternDelay(ch); break;
case 0xF: funkIt(ch); break;
default: break;
}
}
static void checkMoreEffects(moduleChannel_t *ch)
{
switch ((ch->n_cmd & 0xF00) >> 8)
{
case 0x9: sampleOffset(ch); break;
case 0xB: positionJump(ch); break;
case 0xC:
{
if (!editor.muted[ch->n_chanindex])
volumeChange(ch);
}
break;
case 0xD: patternBreak(ch); break;
case 0xE: E_Commands(ch); break;
case 0xF: setSpeed(ch); break;
default:
{
if (!editor.muted[ch->n_chanindex])
paulaSetPeriod(ch->n_chanindex, ch->n_period);
}
break;
}
}
static void checkEffects(moduleChannel_t *ch)
{
uint8_t effect;
if (editor.muted[ch->n_chanindex])
return;
updateFunk(ch);
effect = (ch->n_cmd & 0xF00) >> 8;
if ((ch->n_cmd & 0xFFF) > 0)
{
switch (effect)
{
case 0x0: arpeggio(ch); break;
case 0x1: portaUp(ch); break;
case 0x2: portaDown(ch); break;
case 0x3: tonePortamento(ch); break;
case 0x4: vibrato(ch); break;
case 0x5: tonePlusVolSlide(ch); break;
case 0x6: vibratoPlusVolSlide(ch); break;
case 0xE: E_Commands(ch); break;
case 0x7:
{
paulaSetPeriod(ch->n_chanindex, ch->n_period);
tremolo(ch);
}
break;
case 0xA:
{
paulaSetPeriod(ch->n_chanindex, ch->n_period);
volumeSlide(ch);
}
break;
default: paulaSetPeriod(ch->n_chanindex, ch->n_period); break;
}
}
if (effect != 0x7)
paulaSetVolume(ch->n_chanindex, ch->n_volume);
}
static void setPeriod(moduleChannel_t *ch)
{
uint8_t i;
uint16_t note;
note = ch->n_note & 0xFFF;
for (i = 0; i < 37; i++)
{
// periodTable[36] = 0, so i=36 is safe
if (note >= periodTable[i])
break;
}
// BUG: yes it's 'safe' if i=37 because of padding at the end of period table
ch->n_period = periodTable[(ch->n_finetune * 37) + i];
if ((ch->n_cmd & 0xFF0) != 0xED0) // no note delay
{
if ((ch->n_wavecontrol & 0x04) == 0) ch->n_vibratopos = 0;
if ((ch->n_wavecontrol & 0x40) == 0) ch->n_tremolopos = 0;
paulaSetLength(ch->n_chanindex, ch->n_length);
paulaSetData(ch->n_chanindex, ch->n_start);
if (ch->n_start == NULL)
{
ch->n_loopstart = NULL;
paulaSetLength(ch->n_chanindex, 1);
ch->n_replen = 1;
}
paulaSetPeriod(ch->n_chanindex, ch->n_period);
if (!editor.muted[ch->n_chanindex])
{
paulaStartDMA(ch->n_chanindex);
updateSpectrumAnalyzer(ch->n_volume, ch->n_period);
setVUMeterHeight(ch);
}
else
{
paulaStopDMA(ch->n_chanindex);
}
}
checkMoreEffects(ch);
}
static void checkMetronome(moduleChannel_t *ch, note_t *note)
{
if (editor.metroFlag && editor.metroChannel > 0)
{
if (ch->n_chanindex == editor.metroChannel-1 && (modEntry->row % editor.metroSpeed) == 0)
{
note->sample = 0x1F;
note->period = (((modEntry->row / editor.metroSpeed) % editor.metroSpeed) == 0) ? 160 : 214;
}
}
}
static void playVoice(moduleChannel_t *ch)
{
uint8_t cmd;
moduleSample_t *s;
note_t note;
if (ch->n_note == 0 && ch->n_cmd == 0)
paulaSetPeriod(ch->n_chanindex, ch->n_period);
note = modEntry->patterns[modPattern][(modEntry->row * AMIGA_VOICES) + ch->n_chanindex];
checkMetronome(ch, ¬e);
ch->n_note = note.period;
ch->n_cmd = (note.command << 8) | note.param;
if (note.sample >= 1 && note.sample <= 31) // SAFETY BUG FIX: don't handle sample-numbers >31
{
ch->n_samplenum = note.sample - 1;
s = &modEntry->samples[ch->n_samplenum];
ch->n_start = &modEntry->sampleData[s->offset];
ch->n_finetune = s->fineTune;
ch->n_volume = s->volume;
ch->n_length = s->length / 2;
ch->n_replen = s->loopLength / 2;
if (s->loopStart > 0)
{
ch->n_loopstart = ch->n_start + s->loopStart;
ch->n_wavestart = ch->n_loopstart;
ch->n_length = (s->loopStart / 2) + ch->n_replen;
}
else
{
ch->n_loopstart = ch->n_start;
ch->n_wavestart = ch->n_start;
}
// non-PT2 quirk
if (ch->n_length == 0)
ch->n_loopstart = ch->n_wavestart = &modEntry->sampleData[RESERVED_SAMPLE_OFFSET]; // dummy sample
}
if ((ch->n_note & 0xFFF) > 0)
{
if ((ch->n_cmd & 0xFF0) == 0xE50) // set finetune
{
setFineTune(ch);
setPeriod(ch);
}
else
{
cmd = (ch->n_cmd & 0xF00) >> 8;
if (cmd == 3 || cmd == 5)
{
setVUMeterHeight(ch);
setTonePorta(ch);
checkMoreEffects(ch);
}
else if (cmd == 9)
{
checkMoreEffects(ch);
setPeriod(ch);
}
else
{
setPeriod(ch);
}
}
}
else
{
checkMoreEffects(ch);
}
}
static void nextPosition(void)
{
modEntry->row = pBreakPosition;
pBreakPosition = 0;
posJumpAssert = false;
if (editor.playMode != PLAY_MODE_PATTERN ||
(editor.currMode == MODE_RECORD && editor.recordMode != RECORD_PATT))
{
if (editor.stepPlayEnabled)
{
doStopIt();
editor.stepPlayEnabled = false;
editor.stepPlayBackwards = false;
if (!editor.isWAVRendering && !editor.isSMPRendering)
modEntry->currRow = modEntry->row;
return;
}
modOrder = (modOrder + 1) & 0x7F;
if (modOrder >= modEntry->head.orderCount)
{
modOrder = 0;
modHasBeenPlayed = true;
if (ptConfig.compoMode) // stop song for music competitions playing
{
doStopIt();
turnOffVoices();
modEntry->currOrder = 0;
modEntry->currRow = modEntry->row = 0;
modEntry->currPattern = modPattern = modEntry->head.order[0];
editor.currPatternDisp = &modEntry->currPattern;
editor.currPosEdPattDisp = &modEntry->currPattern;
editor.currPatternDisp = &modEntry->currPattern;
editor.currPosEdPattDisp = &modEntry->currPattern;
if (editor.ui.posEdScreenShown)
editor.ui.updatePosEd = true;
editor.ui.updateSongPos = true;
editor.ui.updateSongPattern = true;
editor.ui.updateCurrPattText = true;
}
}
modPattern = modEntry->head.order[modOrder];
if (modPattern > MAX_PATTERNS-1)
modPattern = MAX_PATTERNS-1;
updateUIPositions = true;
}
}
bool intMusic(void)
{
uint8_t i;
uint16_t *patt;
moduleChannel_t *c;
if (modBPM > 0)
editor.musicTime += (65536 / modBPM); // for playback counter
if (updateUIPositions)
{
updateUIPositions = false;
if (!editor.isWAVRendering && !editor.isSMPRendering)
{
if (editor.playMode != PLAY_MODE_PATTERN)
{
modEntry->currOrder = modOrder;
modEntry->currPattern = modPattern;
patt = &modEntry->head.order[modOrder];
editor.currPatternDisp = patt;
editor.currPosEdPattDisp = patt;
editor.currPatternDisp = patt;
editor.currPosEdPattDisp = patt;
if (editor.ui.posEdScreenShown)
editor.ui.updatePosEd = true;
editor.ui.updateSongPos = true;
editor.ui.updateSongPattern = true;
editor.ui.updateCurrPattText = true;
}
}
}
// PT quirk: CIA refreshes its timer values on the next interrupt, so do the real tempo change here
if (setBPMFlag != 0)
{
modSetTempo(setBPMFlag);
setBPMFlag = 0;
}
if (editor.isWAVRendering && editor.modTick == 0)
editor.rowVisitTable[(modOrder * MOD_ROWS) + modEntry->row] = true;
if (!editor.stepPlayEnabled)
editor.modTick++;
if (editor.modTick >= editor.modSpeed || editor.stepPlayEnabled)
{
editor.modTick = 0;
if (pattDelTime2 == 0)
{
for (i = 0; i < AMIGA_VOICES; i++)
{
c = &modEntry->channels[i];
playVoice(c);
paulaSetVolume(i, c->n_volume);
// these take effect after the current DMA cycle is done
paulaSetData(i, c->n_loopstart);
paulaSetLength(i, c->n_replen);
}
}
else
{
for (i = 0; i < AMIGA_VOICES; i++)
checkEffects(&modEntry->channels[i]);
}
if (!editor.isWAVRendering && !editor.isSMPRendering)
{
modEntry->currRow = modEntry->row;
editor.ui.updatePatternData = true;
}
if (!editor.stepPlayBackwards)
{
modEntry->row++;
modEntry->rowsCounter++;
}
if (pattDelTime > 0)
{
pattDelTime2 = pattDelTime;
pattDelTime = 0;
}
if (pattDelTime2 > 0)
{
if (--pattDelTime2 > 0)
modEntry->row--;
}
if (pBreakFlag)
{
modEntry->row = pBreakPosition;
pBreakPosition = 0;
pBreakFlag = false;
}
if (editor.blockMarkFlag)
editor.ui.updateStatusText = true;
if (editor.stepPlayEnabled)
{
doStopIt();
modEntry->currRow = modEntry->row & 0x3F;
editor.ui.updatePatternData = true;
editor.stepPlayEnabled = false;
editor.stepPlayBackwards = false;
editor.ui.updatePatternData = true;
return true;
}
if (modEntry->row >= MOD_ROWS || posJumpAssert)
{
if (editor.isSMPRendering)
modHasBeenPlayed = true;
nextPosition();
}
if (editor.isWAVRendering && !pattDelTime2 && editor.rowVisitTable[(modOrder * MOD_ROWS) + modEntry->row])
modHasBeenPlayed = true;
}
else
{
for (i = 0; i < AMIGA_VOICES; i++)
checkEffects(&modEntry->channels[i]);
if (posJumpAssert)
nextPosition();
}
if ((editor.isSMPRendering || editor.isWAVRendering) && modHasBeenPlayed && editor.modTick == editor.modSpeed-1)
{
modHasBeenPlayed = false;
return false;
}
return true;
}
void modSetPattern(uint8_t pattern)
{
modPattern = pattern;
modEntry->currPattern = modPattern;
editor.ui.updateCurrPattText = true;
}
void modSetPos(int16_t order, int16_t row)
{
int16_t posEdPos;
if (row != -1)
{
row = CLAMP(row, 0, 63);
editor.modTick = 0;
modEntry->row = (int8_t)row;
modEntry->currRow = (int8_t)row;
}
if (order != -1)
{
if (order >= 0)
{
modOrder = order;
modEntry->currOrder = order;
editor.ui.updateSongPos = true;
if (editor.currMode == MODE_PLAY && editor.playMode == PLAY_MODE_NORMAL)
{
modPattern = modEntry->head.order[order];
if (modPattern > MAX_PATTERNS-1)
modPattern = MAX_PATTERNS-1;
modEntry->currPattern = modPattern;
editor.ui.updateCurrPattText = true;
}
editor.ui.updateSongPattern = true;
editor.currPatternDisp = &modEntry->head.order[modOrder];
posEdPos = modEntry->currOrder;
if (posEdPos > modEntry->head.orderCount-1)
posEdPos = modEntry->head.orderCount-1;
editor.currPosEdPattDisp = &modEntry->head.order[posEdPos];
if (editor.ui.posEdScreenShown)
editor.ui.updatePosEd = true;
}
}
editor.ui.updatePatternData = true;
if (editor.blockMarkFlag)
editor.ui.updateStatusText = true;
}
void modSetTempo(uint16_t bpm)
{
int16_t smpsPerTick;
if (bpm < 32)
return;
modBPM = bpm;
if (!editor.isSMPRendering && !editor.isWAVRendering)
{
modEntry->currBPM = bpm;
editor.ui.updateSongBPM = true;
}
bpm -= 32; // 32..255 -> 0..223
if (editor.isSMPRendering)
smpsPerTick = editor.pat2SmpHQ ? audio.bpmTab28kHz[bpm] : audio.bpmTab22kHz[bpm];
else
smpsPerTick = audio.bpmTab[bpm];
mixerSetSamplesPerTick(smpsPerTick);
}
void modStop(void)
{
moduleChannel_t *ch;
editor.songPlaying = false;
turnOffVoices();
for (uint8_t i = 0; i < AMIGA_VOICES; i++)
{
ch = &modEntry->channels[i];
ch->n_wavecontrol = 0;
ch->n_glissfunk = 0;
ch->n_finetune = 0;
ch->n_loopcount = 0;
}
pBreakFlag = false;
pattDelTime = 0;
pattDelTime2 = 0;
pBreakPosition = 0;
posJumpAssert = false;
modHasBeenPlayed = true;
}
void playPattern(int8_t startRow)
{
modEntry->row = startRow & 0x3F;
modEntry->currRow = modEntry->row;
editor.modTick = 0;
editor.playMode = PLAY_MODE_PATTERN;
editor.currMode = MODE_PLAY;
editor.didQuantize = false;
if (!editor.stepPlayEnabled)
pointerSetMode(POINTER_MODE_PLAY, DO_CARRY);
editor.songPlaying = true;
mixerClearSampleCounter();
}
void incPatt(void)
{
if (++modPattern > MAX_PATTERNS-1)
modPattern = 0;
modEntry->currPattern = modPattern;
editor.ui.updatePatternData = true;
editor.ui.updateCurrPattText = true;
}
void decPatt(void)
{
if (--modPattern < 0)
modPattern = MAX_PATTERNS - 1;
modEntry->currPattern = modPattern;
editor.ui.updatePatternData = true;
editor.ui.updateCurrPattText = true;
}
void modPlay(int16_t patt, int16_t order, int8_t row)
{
uint8_t oldPlayMode, oldMode;
if (row != -1)
{
if (row >= 0 && row <= 63)
{
modEntry->row = row;
modEntry->currRow = row;
}
}
else
{
modEntry->row = 0;
modEntry->currRow = 0;
}
if (editor.playMode != PLAY_MODE_PATTERN)
{
if (modOrder >= modEntry->head.orderCount)
{
modOrder = 0;
modEntry->currOrder = 0;
}
if (order >= 0 && order < modEntry->head.orderCount)
{
modOrder = order;
modEntry->currOrder = order;
}
if (order >= modEntry->head.orderCount)
{
modOrder = 0;
modEntry->currOrder = 0;
}
}
if (patt >= 0 && patt <= MAX_PATTERNS-1)
{
modPattern = patt;
modEntry->currPattern = patt;
}
else
{
modPattern = modEntry->head.order[modOrder];
modEntry->currPattern = modEntry->head.order[modOrder];
}
editor.currPatternDisp = &modEntry->head.order[modOrder];
editor.currPosEdPattDisp = &modEntry->head.order[modOrder];
oldPlayMode = editor.playMode;
oldMode = editor.currMode;
doStopIt();
turnOffVoices();
editor.playMode = oldPlayMode;
editor.currMode = oldMode;
editor.modTick = editor.modSpeed;
modHasBeenPlayed = false;
editor.songPlaying = true;
editor.didQuantize = false;
editor.musicTime = 0;
if (!editor.isSMPRendering && !editor.isWAVRendering)
{
editor.ui.updateSongPos = true;
editor.ui.updatePatternData = true;
editor.ui.updateSongPattern = true;
editor.ui.updateCurrPattText = true;
}
mixerClearSampleCounter();
}
void clearSong(void)
{
uint8_t i;
moduleChannel_t *ch;
if (modEntry != NULL)
{
memset(modEntry->head.order, 0, sizeof (modEntry->head.order));
memset(modEntry->head.moduleTitle, 0, sizeof (modEntry->head.moduleTitle));
editor.muted[0] = false;
editor.muted[1] = false;
editor.muted[2] = false;
editor.muted[3] = false;
editor.f6Pos = 0;
editor.f7Pos = 16;
editor.f8Pos = 32;
editor.f9Pos = 48;
editor.f10Pos = 63;
editor.musicTime = 0;
editor.metroFlag = false;
editor.currSample = 0;
editor.editMoveAdd = 1;
editor.blockMarkFlag = false;
editor.swapChannelFlag = false;
modEntry->head.orderCount = 1;
modEntry->head.patternCount = 1;
for (i = 0; i < MAX_PATTERNS; i++)
memset(modEntry->patterns[i], 0, (MOD_ROWS * AMIGA_VOICES) * sizeof (note_t));
for (i = 0; i < AMIGA_VOICES; i++)
{
ch = &modEntry->channels[i];
ch->n_wavecontrol = 0;
ch->n_glissfunk = 0;
ch->n_finetune = 0;
ch->n_loopcount = 0;
}
modSetPos(0, 0); // this also refreshes pattern data
modEntry->currOrder = 0;
modEntry->currPattern = 0;
editor.currPatternDisp = &modEntry->head.order[0];
editor.currPosEdPattDisp = &modEntry->head.order[0];
modSetTempo(editor.initialTempo);
modSetSpeed(editor.initialSpeed);
setLEDFilter(false); // real PT doesn't do this there, but that's insane
updateCurrSample();
editor.ui.updateSongSize = true;
renderMuteButtons();
updateWindowTitle(MOD_IS_MODIFIED);
}
}
void clearSamples(void)
{
moduleSample_t *s;
if (modEntry == NULL)
return;
for (uint8_t i = 0; i < MOD_SAMPLES; i++)
{
s = &modEntry->samples[i];
s->fineTune = 0;
s->length = 0;
s->loopLength = 2;
s->loopStart = 0;
s->volume = 0;
memset(s->text, 0, sizeof (s->text));
}
memset(modEntry->sampleData, 0, (MOD_SAMPLES + 1) * MAX_SAMPLE_LEN);
editor.currSample = 0;
editor.keypadSampleOffset = 0;
editor.sampleZero = false;
editor.ui.editOpScreenShown = false;
editor.ui.aboutScreenShown = false;
editor.blockMarkFlag = false;
editor.samplePos = 0;
updateCurrSample();
updateWindowTitle(MOD_IS_MODIFIED);
}
void clearAll(void)
{
if (modEntry != NULL)
{
clearSamples();
clearSong();
}
}
void modFree(void)
{
uint8_t i;
if (modEntry == NULL)
return; // not allocated
lockAudio();
for (i = 0; i < MAX_PATTERNS; i++)
{
if (modEntry->patterns[i] != NULL)
free(modEntry->patterns[i]);
}
if (modEntry->sampleDataUnaligned != NULL)
{
clearPaulaAndScopes();
free(modEntry->sampleDataUnaligned);
}
free(modEntry);
modEntry = NULL;
unlockAudio();
}
void restartSong(void) // for the beginning of MOD2WAV/PAT2SMP
{
if (editor.songPlaying)
modStop();
editor.playMode = PLAY_MODE_NORMAL;
editor.blockMarkFlag = false;
forceMixerOff = true;
modEntry->row = 0;
modEntry->currRow = 0;
modEntry->rowsCounter = 0;
memset(editor.rowVisitTable, 0, MOD_ORDERS * MOD_ROWS); // for MOD2WAV
if (editor.isSMPRendering)
{
modPlay(DONT_SET_PATTERN, DONT_SET_ORDER, DONT_SET_ROW);
}
else
{
modEntry->currSpeed = 6;
modEntry->currBPM = 125;
modSetSpeed(6);
modSetTempo(125);
modPlay(DONT_SET_PATTERN, 0, 0);
}
}
// this function is meant for the end of MOD2WAV/PAT2SMP
void resetSong(void) // only call this after storeTempVariables() has been called!
{
modStop();
editor.songPlaying = false;
editor.playMode = PLAY_MODE_NORMAL;
editor.currMode = MODE_IDLE;
turnOffVoices();
memset((int8_t *)editor.vuMeterVolumes,0, sizeof (editor.vuMeterVolumes));
memset((int8_t *)editor.realVuMeterVolumes, 0, sizeof (editor.realVuMeterVolumes));
memset((int8_t *)editor.spectrumVolumes, 0, sizeof (editor.spectrumVolumes));
memset(modEntry->channels, 0, sizeof (modEntry->channels));
for (uint8_t i = 0; i < AMIGA_VOICES; i++)
modEntry->channels[i].n_chanindex = i;
modOrder = oldOrder;
modPattern = oldPattern;
modEntry->row = oldRow;
modEntry->currRow = oldRow;
modEntry->currBPM = oldBPM;
modEntry->currOrder = oldOrder;
modEntry->currPattern = oldPattern;
editor.currPosDisp = &modEntry->currOrder;
editor.currEditPatternDisp = &modEntry->currPattern;
editor.currPatternDisp = &modEntry->head.order[modEntry->currOrder];
editor.currPosEdPattDisp = &modEntry->head.order[modEntry->currOrder];
modSetSpeed(oldSpeed);
modSetTempo(oldBPM);
doStopIt();
editor.modTick = 0;
modHasBeenPlayed = false;
forceMixerOff = false;
}