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-rw-r--r--sound/softsynth/mt32/part.cpp603
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diff --git a/sound/softsynth/mt32/part.cpp b/sound/softsynth/mt32/part.cpp
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+/* Copyright (c) 2003-2004 Various contributors
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include <math.h>
+
+#include "mt32emu.h"
+
+namespace MT32Emu {
+
+static const Bit8u PartialStruct[13] = {
+ 0, 0, 2, 2, 1, 3,
+ 3, 0, 3, 0, 2, 1, 3 };
+
+static const Bit8u PartialMixStruct[13] = {
+ 0, 1, 0, 1, 1, 0,
+ 1, 3, 3, 2, 2, 2, 2 };
+
+static const float floatKeyfollow[17] = {
+ -1.0f, -1.0f/2.0f, -1.0f/4.0f, 0.0f,
+ 1.0f/8.0f, 1.0f/4.0f, 3.0f/8.0f, 1.0f/2.0f, 5.0f/8.0f, 3.0f/4.0f, 7.0f/8.0f, 1.0f,
+ 5.0f/4.0f, 3.0f/2.0f, 2.0f,
+ 1.0009765625f, 1.0048828125f
+};
+
+//FIXME:KG: Put this dpoly stuff somewhere better
+bool dpoly::isActive() const {
+ return partials[0] != NULL || partials[1] != NULL || partials[2] != NULL || partials[3] != NULL;
+}
+
+Bit32u dpoly::getAge() const {
+ for (int i = 0; i < 4; i++) {
+ if (partials[i] != NULL) {
+ return partials[i]->age;
+ }
+ }
+ return 0;
+}
+
+RhythmPart::RhythmPart(Synth *useSynth, unsigned int usePartNum): Part(useSynth, usePartNum) {
+ strcpy(name, "Rhythm");
+ rhythmTemp = &synth->mt32ram.rhythmSettings[0];
+ refresh();
+}
+
+Part::Part(Synth *useSynth, unsigned int usePartNum) {
+ this->synth = useSynth;
+ this->partNum = usePartNum;
+ patchCache[0].dirty = true;
+ holdpedal = false;
+ if (usePartNum == 8) {
+ // Nasty hack for rhythm
+ patchTemp = NULL;
+ timbreTemp = NULL;
+ } else {
+ sprintf(name, "Part %d", partNum + 1);
+ patchTemp = &synth->mt32ram.patchSettings[partNum];
+ timbreTemp = &synth->mt32ram.timbreSettings[partNum];
+ }
+ currentInstr[0] = 0;
+ currentInstr[10] = 0;
+ volume = voltable[102]; //FIXME:KG: Original was just volume=102; I assume this is intended
+ volumesetting.leftvol = 32767;
+ volumesetting.rightvol = 32767;
+ bend = 0.0f;
+ memset(polyTable,0,sizeof(polyTable));
+ memset(patchCache, 0, sizeof(patchCache));
+}
+
+void Part::setHoldPedal(bool pedalval) {
+ if (holdpedal && !pedalval)
+ stopPedalHold();
+ holdpedal = pedalval;
+}
+
+void RhythmPart::setBend(unsigned int midiBend) {
+ synth->printDebug("%s: Setting bend (%d) not supported on rhythm", name, midiBend);
+ return;
+}
+
+void Part::setBend(unsigned int midiBend) {
+ // FIXME:KG: Slightly unbalanced increments, but I wanted min -1.0, centre 0.0 and max 1.0
+ if (midiBend <= 0x2000) {
+ bend = ((signed int)midiBend - 0x2000) / (float)0x2000;
+ } else {
+ bend = ((signed int)midiBend - 0x2000) / (float)0x1FFF;
+ }
+ // Loop through all partials to update their bend
+ for (int i = 0; i < MT32EMU_MAX_POLY; i++) {
+ for (int j = 0; j < 4; j++) {
+ if (polyTable[i].partials[j] != NULL) {
+ polyTable[i].partials[j]->setBend(bend);
+ }
+ }
+ }
+}
+
+void RhythmPart::setModulation(unsigned int midiModulation) {
+ synth->printDebug("%s: Setting modulation (%d) not supported on rhythm", name, midiModulation);
+}
+
+void Part::setModulation(unsigned int midiModulation) {
+ // Just a bloody guess, as always, before I get things figured out
+ for (int t = 0; t < 4; t++) {
+ if (patchCache[t].playPartial) {
+ int newrate = (patchCache[t].modsense * midiModulation) >> 7;
+ //patchCache[t].lfoperiod = lfotable[newrate];
+ patchCache[t].lfodepth = newrate;
+ //FIXME:KG: timbreTemp->partial[t].lfo.depth =
+ }
+ }
+}
+
+void RhythmPart::refresh() {
+ // (Re-)cache all the mapped timbres ahead of time
+ for (unsigned int drumNum = 0; drumNum < 64; drumNum++) {
+ int drumTimbreNum = rhythmTemp[drumNum].timbre;
+ if (drumTimbreNum >= 94)
+ continue;
+ Bit16s pan = rhythmTemp[drumNum].panpot; // They use R-L 0-14...
+ // FIXME:KG: Panning cache should be backed up to partials using it, too
+ // FIXME:KG: If I don't have left/right mixed up here, it's pure luck
+ if (pan < 7) {
+ drumPan[drumNum].leftvol = 32767;
+ drumPan[drumNum].rightvol = pan * 4681;
+ } else {
+ drumPan[drumNum].rightvol = 32767;
+ drumPan[drumNum].leftvol = (14 - pan) * 4681;
+ }
+ PatchCache *cache = drumCache[drumNum];
+ backupCacheToPartials(cache);
+ for (int t = 0; t < 4; t++) {
+ // Common parameters, stored redundantly
+ cache[t].dirty = true;
+ cache[t].pitchShift = 0.0f;
+ cache[t].benderRange = 0.0f;
+ cache[t].pansetptr = &drumPan[drumNum];
+ cache[t].reverb = rhythmTemp[drumNum].reverbSwitch > 0;
+ }
+ }
+}
+
+void Part::refresh() {
+ backupCacheToPartials(patchCache);
+ for (int t = 0; t < 4; t++) {
+ // Common parameters, stored redundantly
+ patchCache[t].dirty = true;
+ patchCache[t].pitchShift = (patchTemp->patch.keyShift - 24) + (patchTemp->patch.fineTune - 50) / 100.0f;
+ patchCache[t].benderRange = patchTemp->patch.benderRange;
+ patchCache[t].pansetptr = &volumesetting;
+ patchCache[t].reverb = patchTemp->patch.reverbSwitch > 0;
+ }
+ memcpy(currentInstr, timbreTemp->common.name, 10);
+}
+
+void RhythmPart::refreshTimbre(unsigned int absTimbreNum) {
+ for (int m = 0; m < 64; m++) {
+ if (rhythmTemp[m].timbre == absTimbreNum - 128)
+ drumCache[m][0].dirty = true;
+ }
+}
+
+void Part::refreshTimbre(unsigned int absTimbreNum) {
+ if (getAbsTimbreNum() == absTimbreNum) {
+ memcpy(currentInstr, timbreTemp->common.name, 10);
+ patchCache[0].dirty = true;
+ }
+}
+
+int Part::fixBiaslevel(int srcpnt, int *dir) {
+ int noteat = srcpnt & 0x3F;
+ int outnote;
+ if (srcpnt < 64)
+ *dir = 0;
+ else
+ *dir = 1;
+ outnote = 33 + noteat;
+ //synth->printDebug("Bias note %d, dir %d", outnote, *dir);
+
+ return outnote;
+}
+
+int Part::fixKeyfollow(int srckey) {
+ if (srckey>=0 && srckey<=16) {
+ int keyfix[17] = { -256*16, -128*16, -64*16, 0, 32*16, 64*16, 96*16, 128*16, (128+32)*16, 192*16, (192+32)*16, 256*16, (256+64)*16, (256+128)*16, (512)*16, 4100, 4116};
+ return keyfix[srckey];
+ } else {
+ //LOG(LOG_ERROR|LOG_MISC,"Missed key: %d", srckey);
+ return 256;
+ }
+}
+
+void Part::abortPoly(dpoly *poly) {
+ if (!poly->isPlaying) {
+ return;
+ }
+ for (int i = 0; i < 4; i++) {
+ Partial *partial = poly->partials[i];
+ if (partial != NULL) {
+ partial->deactivate();
+ }
+ }
+ poly->isPlaying = false;
+}
+
+void Part::setPatch(const PatchParam *patch) {
+ patchTemp->patch = *patch;
+}
+
+void Part::setTimbre(TimbreParam *timbre) {
+ *timbreTemp = *timbre;
+}
+
+unsigned int RhythmPart::getAbsTimbreNum() const {
+ synth->printDebug("%s: Attempted to call getAbsTimbreNum() - doesn't make sense for rhythm");
+ return 0;
+}
+
+unsigned int Part::getAbsTimbreNum() const {
+ return (patchTemp->patch.timbreGroup * 64) + patchTemp->patch.timbreNum;
+}
+
+void RhythmPart::setProgram(unsigned int patchNum) {
+ synth->printDebug("%s: Attempt to set program (%d) on rhythm is invalid", name, patchNum);
+}
+
+void Part::setProgram(unsigned int patchNum) {
+ setPatch(&synth->mt32ram.patches[patchNum]);
+ setTimbre(&synth->mt32ram.timbres[getAbsTimbreNum()].timbre);
+#if 0
+ // Immediately stop all partials on this part (this is apparently *not* the correct behaviour)
+ for (int m = 0; m < MT32EMU_MAX_POLY; m++) {
+ AbortPoly(poly);
+ }
+#endif
+
+ refresh();
+
+ allStop(); //FIXME:KG: Is this correct?
+}
+
+void Part::backupCacheToPartials(PatchCache cache[4]) {
+ // check if any partials are still playing with the old patch cache
+ // if so then duplicate the cached data from the part to the partial so that
+ // we can change the part's cache without affecting the partial.
+ // We delay this until now to avoid a copy operation with every note played
+ for (int m = 0; m < MT32EMU_MAX_POLY; m++) {
+ for (int i = 0; i < 4; i++) {
+ Partial *partial = polyTable[m].partials[i];
+ if (partial != NULL && partial->patchCache == &cache[i]) {
+ partial->cachebackup = cache[i];
+ partial->patchCache = &partial->cachebackup;
+ }
+ }
+ }
+}
+
+void Part::cacheTimbre(PatchCache cache[4], const TimbreParam *timbre) {
+ backupCacheToPartials(cache);
+ int partialCount = 0;
+ for (int t = 0; t < 4; t++) {
+ if (((timbre->common.pmute >> t) & 0x1) == 1) {
+ cache[t].playPartial = true;
+ partialCount++;
+ } else {
+ cache[t].playPartial = false;
+ continue;
+ }
+
+ // Calculate and cache common parameters
+
+ cache[t].pcm = timbre->partial[t].wg.pcmwave;
+ cache[t].useBender = (timbre->partial[t].wg.bender == 1);
+
+ switch (t) {
+ case 0:
+ cache[t].PCMPartial = (PartialStruct[(int)timbre->common.pstruct12] & 0x2) ? true : false;
+ cache[t].structureMix = PartialMixStruct[(int)timbre->common.pstruct12];
+ cache[t].structurePosition = 0;
+ cache[t].structurePair = 1;
+ break;
+ case 1:
+ cache[t].PCMPartial = (PartialStruct[(int)timbre->common.pstruct12] & 0x1) ? true : false;
+ cache[t].structureMix = PartialMixStruct[(int)timbre->common.pstruct12];
+ cache[t].structurePosition = 1;
+ cache[t].structurePair = 0;
+ break;
+ case 2:
+ cache[t].PCMPartial = (PartialStruct[(int)timbre->common.pstruct34] & 0x2) ? true : false;
+ cache[t].structureMix = PartialMixStruct[(int)timbre->common.pstruct34];
+ cache[t].structurePosition = 0;
+ cache[t].structurePair = 3;
+ break;
+ case 3:
+ cache[t].PCMPartial = (PartialStruct[(int)timbre->common.pstruct34] & 0x1) ? true : false;
+ cache[t].structureMix = PartialMixStruct[(int)timbre->common.pstruct34];
+ cache[t].structurePosition = 1;
+ cache[t].structurePair = 2;
+ break;
+ default:
+ break;
+ }
+
+ cache[t].waveform = timbre->partial[t].wg.waveform;
+ cache[t].pulsewidth = timbre->partial[t].wg.pulsewid;
+ cache[t].pwsens = timbre->partial[t].wg.pwvelo;
+ if (timbre->partial[t].wg.keyfollow > 16) {
+ synth->printDebug("Bad keyfollow value in timbre!");
+ cache[t].pitchKeyfollow = 1.0f;
+ } else {
+ cache[t].pitchKeyfollow = floatKeyfollow[timbre->partial[t].wg.keyfollow];
+ }
+
+ cache[t].pitch = timbre->partial[t].wg.coarse + (timbre->partial[t].wg.fine - 50) / 100.0f + 24.0f;
+ cache[t].pitchEnv = timbre->partial[t].env;
+ cache[t].pitchEnv.sensitivity = (char)((float)cache[t].pitchEnv.sensitivity * 1.27f);
+ cache[t].pitchsustain = cache[t].pitchEnv.level[3];
+
+ // Calculate and cache TVA envelope stuff
+ cache[t].ampEnv = timbre->partial[t].tva;
+ for (int i = 0; i < 4; i++)
+ cache[t].ampEnv.envlevel[i] = (char)((float)cache[t].ampEnv.envlevel[i] * 1.27f);
+ cache[t].ampEnv.level = (char)((float)cache[t].ampEnv.level * 1.27f);
+ float tvelo = ((float)timbre->partial[t].tva.velosens / 100.0f);
+ float velo = fabs(tvelo-0.5f) * 2.0f;
+ velo *= 63.0f;
+ cache[t].ampEnv.velosens = (char)velo;
+ if (tvelo<0.5f)
+ cache[t].ampenvdir = 1;
+ else
+ cache[t].ampenvdir = 0;
+
+ cache[t].ampbias[0] = fixBiaslevel(cache[t].ampEnv.biaspoint1, &cache[t].ampdir[0]);
+ cache[t].ampblevel[0] = 12 - cache[t].ampEnv.biaslevel1;
+ cache[t].ampbias[1] = fixBiaslevel(cache[t].ampEnv.biaspoint2, &cache[t].ampdir[1]);
+ cache[t].ampblevel[1] = 12 - cache[t].ampEnv.biaslevel2;
+ cache[t].ampdepth = cache[t].ampEnv.envvkf * cache[t].ampEnv.envvkf;
+ cache[t].ampsustain = cache[t].ampEnv.envlevel[3];
+ cache[t].amplevel = cache[t].ampEnv.level;
+
+ // Calculate and cache filter stuff
+ cache[t].filtEnv = timbre->partial[t].tvf;
+ cache[t].tvfdepth = cache[t].filtEnv.envdkf;
+ cache[t].filtkeyfollow = fixKeyfollow(cache[t].filtEnv.keyfollow);
+ cache[t].filtEnv.envdepth = (char)((float)cache[t].filtEnv.envdepth * 1.27);
+ cache[t].tvfbias = fixBiaslevel(cache[t].filtEnv.biaspoint, &cache[t].tvfdir);
+ cache[t].tvfblevel = cache[t].filtEnv.biaslevel;
+ cache[t].filtsustain = cache[t].filtEnv.envlevel[3];
+
+ // Calculate and cache LFO stuff
+ cache[t].lfodepth = timbre->partial[t].lfo.depth;
+ cache[t].lfoperiod = lfotable[(int)timbre->partial[t].lfo.rate];
+ cache[t].lforate = timbre->partial[t].lfo.rate;
+ cache[t].modsense = timbre->partial[t].lfo.modsense;
+ }
+ for (int t = 0; t < 4; t++) {
+ // Common parameters, stored redundantly
+ cache[t].dirty = false;
+ cache[t].partialCount = partialCount;
+ cache[t].sustain = (timbre->common.nosustain == 0);
+ }
+ //synth->printDebug("Res 1: %d 2: %d 3: %d 4: %d", cache[0].waveform, cache[1].waveform, cache[2].waveform, cache[3].waveform);
+
+#if MT32EMU_MONITOR_INSTRUMENTS == 1
+ synth->printDebug("%s (%s): Recached timbre", name, currentInstr);
+ for (int i = 0; i < 4; i++) {
+ synth->printDebug(" %d: play=%s, pcm=%s (%d), wave=%d", i, cache[i].playPartial ? "YES" : "NO", cache[i].PCMPartial ? "YES" : "NO", timbre->partial[i].wg.pcmwave, timbre->partial[i].wg.waveform);
+ }
+#endif
+}
+
+const char *Part::getName() const {
+ return name;
+}
+
+void Part::setVolume(int vol) {
+ volume = voltable[vol];
+}
+
+void RhythmPart::setPan(unsigned int midiPan)
+{
+ // FIXME:KG: This is unchangeable for drums (they always use drumPan), is that correct?
+ synth->printDebug("%s: Setting pan (%d) not supported on rhythm", name, midiPan);
+}
+
+void Part::setPan(unsigned int midiPan) {
+ // FIXME:KG: Tweaked this a bit so that we have a left 100%, centre and right 100%
+ // (But this makes the range somewhat skewed)
+ if (midiPan < 64) {
+ volumesetting.leftvol = 32767;
+ volumesetting.rightvol = (Bit16s)(midiPan * 512);
+ } else if (midiPan == 64) {
+ volumesetting.leftvol = 32767;
+ volumesetting.rightvol = 32767;
+ } else {
+ volumesetting.rightvol = 32767;
+ volumesetting.leftvol = (Bit16s)((127 - midiPan) * 520);
+ }
+ //synth->printDebug("%s (%s): Set pan to %d", name, currentInstr, panpot);
+}
+
+void RhythmPart::playNote(unsigned int key, int vel) {
+ if (key < 24 || key > 87) {
+ synth->printDebug("%s: Attempted to play invalid key %d", name, key);
+ return;
+ }
+ int drumNum = key - 24;
+ int drumTimbreNum = rhythmTemp[drumNum].timbre;
+ if (drumTimbreNum >= 94) {
+ synth->printDebug("%s: Attempted to play unmapped key %d", name, key);
+ return;
+ }
+ int absTimbreNum = drumTimbreNum + 128;
+ TimbreParam *timbre = &synth->mt32ram.timbres[absTimbreNum].timbre;
+ memcpy(currentInstr, timbre->common.name, 10);
+#if MT32EMU_MONITOR_INSTRUMENTS == 1
+ synth->printDebug("%s (%s): starting poly (drum %d, timbre %d) - Vel %d Key %d Vol %d", name, currentInstr, drumNum, absTimbreNum, vel, key, volume);
+#endif
+ if (drumCache[drumNum][0].dirty) {
+ cacheTimbre(drumCache[drumNum], timbre);
+ }
+ playPoly(drumCache[drumNum], key, MIDDLEC, vel);
+}
+
+void Part::playNote(unsigned int key, int vel) {
+ int freqNum = key;
+ if (freqNum < 12) {
+ synth->printDebug("%s (%s): Attempted to play invalid key %d < 12; moving up by octave", name, currentInstr, key);
+ freqNum += 12;
+ } else if (freqNum > 108) {
+ synth->printDebug("%s (%s): Attempted to play invalid key %d > 108; moving down by octave", name, currentInstr, key);
+ while (freqNum > 108) {
+ freqNum -= 12;
+ }
+ }
+ // POLY1 mode, Single Assign
+ // Haven't found any software that uses any of the other poly modes
+ // FIXME:KG: Should this also apply to rhythm?
+ for (unsigned int i = 0; i < MT32EMU_MAX_POLY; i++) {
+ if (polyTable[i].isActive() && (polyTable[i].key == key)) {
+ //AbortPoly(&polyTable[i]);
+ stopNote(key);
+ break;
+ }
+ }
+#if MT32EMU_MONITOR_INSTRUMENTS == 1
+ synth->printDebug("%s (%s): starting poly - Vel %d Key %d Vol %d", name, currentInstr, vel, key, volume);
+#endif
+ if (patchCache[0].dirty) {
+ cacheTimbre(patchCache, timbreTemp);
+ }
+ playPoly(patchCache, key, freqNum, vel);
+}
+
+void Part::playPoly(const PatchCache cache[4], unsigned int key, int freqNum, int vel) {
+ unsigned int needPartials = cache[0].partialCount;
+ unsigned int freePartials = synth->partialManager->getFreePartialCount();
+
+ if (freePartials < needPartials) {
+ if (!synth->partialManager->freePartials(needPartials - freePartials, partNum)) {
+ synth->printDebug("%s (%s): Insufficient free partials to play key %d (vel=%d); needed=%d, free=%d", name, currentInstr, key, vel, needPartials, synth->partialManager->getFreePartialCount());
+ return;
+ }
+ }
+ // Find free poly
+ int m;
+ for (m = 0; m < MT32EMU_MAX_POLY; m++) {
+ if (!polyTable[m].isActive()) {
+ break;
+ }
+ }
+ if (m == MT32EMU_MAX_POLY) {
+ synth->printDebug("%s (%s): No free poly to play key %d (vel %d)", name, currentInstr, key, vel);
+ return;
+ }
+
+ dpoly *tpoly = &polyTable[m];
+
+ tpoly->isPlaying = true;
+ tpoly->key = key;
+ tpoly->isDecay = false;
+ tpoly->freqnum = freqNum;
+ tpoly->vel = vel;
+ tpoly->pedalhold = false;
+
+ bool allnull = true;
+ for (int x = 0; x < 4; x++) {
+ if (cache[x].playPartial) {
+ tpoly->partials[x] = synth->partialManager->allocPartial(partNum);
+ allnull = false;
+ } else {
+ tpoly->partials[x] = NULL;
+ }
+ }
+
+ if (allnull)
+ synth->printDebug("%s (%s): No partials to play for this instrument", name, this->currentInstr);
+
+ tpoly->sustain = cache[0].sustain;
+ tpoly->volumeptr = &volume;
+
+ for (int x = 0; x < 4; x++) {
+ if (tpoly->partials[x] != NULL) {
+ tpoly->partials[x]->startPartial(tpoly, &cache[x], tpoly->partials[cache[x].structurePair]);
+ tpoly->partials[x]->setBend(bend);
+ }
+ }
+}
+
+static void startDecayPoly(dpoly *tpoly) {
+ if (tpoly->isDecay) {
+ return;
+ }
+ tpoly->isDecay = true;
+
+ for (int t = 0; t < 4; t++) {
+ Partial *partial = tpoly->partials[t];
+ if (partial == NULL)
+ continue;
+ partial->startDecayAll();
+ }
+ tpoly->isPlaying = false;
+}
+
+void Part::allStop() {
+ for (int q = 0; q < MT32EMU_MAX_POLY; q++) {
+ dpoly *tpoly = &polyTable[q];
+ if (tpoly->isPlaying) {
+ startDecayPoly(tpoly);
+ }
+ }
+}
+
+void Part::stopPedalHold() {
+ for (int q = 0; q < MT32EMU_MAX_POLY; q++) {
+ dpoly *tpoly;
+ tpoly = &polyTable[q];
+ if (tpoly->isActive() && tpoly->pedalhold)
+ stopNote(tpoly->key);
+ }
+}
+
+void Part::stopNote(unsigned int key) {
+ // Non-sustaining instruments ignore stop commands.
+ // They die away eventually anyway
+
+#if MT32EMU_MONITOR_INSTRUMENTS == 1
+ synth->printDebug("%s (%s): stopping key %d", name, currentInstr, key);
+#endif
+
+ if (key != 255) {
+ for (int q = 0; q < MT32EMU_MAX_POLY; q++) {
+ dpoly *tpoly = &polyTable[q];
+ if (tpoly->isPlaying && tpoly->key == key) {
+ if (holdpedal)
+ tpoly->pedalhold = true;
+ else if (tpoly->sustain)
+ startDecayPoly(tpoly);
+ }
+ }
+ return;
+ }
+
+ // Find oldest poly... yes, the MT-32 can be reconfigured to kill different poly first
+ // This is simplest
+ int oldest = -1;
+ Bit32u oldage = 0;
+
+ for (int q = 0; q < MT32EMU_MAX_POLY; q++) {
+ dpoly *tpoly = &polyTable[q];
+
+ if (tpoly->isPlaying && !tpoly->isDecay) {
+ if (tpoly->getAge() >= oldage) {
+ oldage = tpoly->getAge();
+ oldest = q;
+ }
+ }
+ }
+
+ if (oldest != -1) {
+ startDecayPoly(&polyTable[oldest]);
+ }
+}
+
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-12 07:12:01 +0000