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Diffstat (limited to 'engines/sci/sfx/softseq/mt32/partial.cpp')
| -rw-r--r-- | engines/sci/sfx/softseq/mt32/partial.cpp | 960 |
1 files changed, 0 insertions, 960 deletions
diff --git a/engines/sci/sfx/softseq/mt32/partial.cpp b/engines/sci/sfx/softseq/mt32/partial.cpp deleted file mode 100644 index 9d32282a82..0000000000 --- a/engines/sci/sfx/softseq/mt32/partial.cpp +++ /dev/null @@ -1,960 +0,0 @@ -/* Copyright (c) 2003-2005 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 <stdlib.h> -#include <math.h> -#include <string.h> - -#include "mt32emu.h" - -#ifdef MACOSX -// Older versions of Mac OS X didn't supply a powf function. To ensure -// binary compatibility, we force using pow instead of powf (the only -// potential drawback is that it might be a little bit slower). -#define powf pow -#endif - -#define FIXEDPOINT_UDIV(x, y, point) (((x) << (point)) / ((y))) -#define FIXEDPOINT_SDIV(x, y, point) (((x) * (1 << point)) / ((y))) -#define FIXEDPOINT_UMULT(x, y, point) (((x) * (y)) >> point) -#define FIXEDPOINT_SMULT(x, y, point) (((x) * (y)) / (1 << point)) - -using namespace MT32Emu; - -Partial::Partial(Synth *useSynth) { - this->synth = useSynth; - ownerPart = -1; - poly = NULL; - pair = NULL; -#if MT32EMU_ACCURATENOTES == 1 - for (int i = 0; i < 3; i++) { - noteLookupStorage.waveforms[i] = new Bit16s[65536]; - } - noteLookup = ¬eLookupStorage; -#endif -} - -Partial::~Partial() { -#if MT32EMU_ACCURATENOTES == 1 - for (int i = 0; i < 3; i++) { - delete[] noteLookupStorage.waveforms[i]; - } - delete[] noteLookupStorage.wavTable; -#endif -} - -int Partial::getOwnerPart() const { - return ownerPart; -} - -bool Partial::isActive() { - return ownerPart > -1; -} - -const dpoly *Partial::getDpoly() const { - return this->poly; -} - -void Partial::activate(int part) { - // This just marks the partial as being assigned to a part - ownerPart = part; -} - -void Partial::deactivate() { - ownerPart = -1; - if (poly != NULL) { - for (int i = 0; i < 4; i++) { - if (poly->partials[i] == this) { - poly->partials[i] = NULL; - break; - } - } - if (pair != NULL) { - pair->pair = NULL; - } - } -} - -void Partial::initKeyFollow(int key) { - // Setup partial keyfollow - // Note follow relative to middle C - - // Calculate keyfollow for pitch -#if 1 - float rel = key == -1 ? 0.0f : (key - MIDDLEC); - float newPitch = rel * patchCache->pitchKeyfollow + patchCache->pitch + patchCache->pitchShift; - //FIXME:KG: Does it truncate the keyfollowed pitch to a semitone (towards MIDDLEC)? - //int newKey = (int)(rel * patchCache->pitchKeyfollow); - //float newPitch = newKey + patchCache->pitch + patchCache->pitchShift; -#else - float rel = key == -1 ? 0.0f : (key + patchCache->pitchShift - MIDDLEC); - float newPitch = rel * patchCache->pitchKeyfollow + patchCache->pitch; -#endif -#if MT32EMU_ACCURATENOTES == 1 - noteVal = newPitch; - synth->printDebug("key=%d, pitch=%f, pitchKeyfollow=%f, pitchShift=%f, newPitch=%f", key, patchCache->pitch, patchCache->pitchKeyfollow, patchCache->pitchShift, newPitch); -#else - float newPitchInt; - float newPitchFract = modff(newPitch, &newPitchInt); - if (newPitchFract > 0.5f) { - newPitchInt += 1.0f; - newPitchFract -= 1.0f; - } - noteVal = (int)newPitchInt; - fineShift = (int)(powf(2.0f, newPitchFract / 12.0f) * 4096.0f); - synth->printDebug("key=%d, pitch=%f, pitchKeyfollow=%f, pitchShift=%f, newPitch=%f, noteVal=%d, fineShift=%d", key, patchCache->pitch, patchCache->pitchKeyfollow, patchCache->pitchShift, newPitch, noteVal, fineShift); -#endif - // FIXME:KG: Raise/lower by octaves until in the supported range. - while (noteVal > HIGHEST_NOTE) // FIXME:KG: see tables.cpp: >108? - noteVal -= 12; - while (noteVal < LOWEST_NOTE) // FIXME:KG: see tables.cpp: <12? - noteVal += 12; - // Calculate keyfollow for filter - int keyfollow = ((key - MIDDLEC) * patchCache->filtkeyfollow) / 4096; - if (keyfollow > 108) - keyfollow = 108; - else if (keyfollow < -108) - keyfollow = -108; - filtVal = synth->tables.tvfKeyfollowMult[keyfollow + 108]; - realVal = synth->tables.tvfKeyfollowMult[(noteVal - MIDDLEC) + 108]; -} - -int Partial::getKey() const { - if (poly == NULL) { - return -1; - } else { - return poly->key; - } -} - -void Partial::startPartial(dpoly *usePoly, const PatchCache *useCache, Partial *pairPartial) { - if (usePoly == NULL || useCache == NULL) { - synth->printDebug("*** Error: Starting partial for owner %d, usePoly=%s, useCache=%s", ownerPart, usePoly == NULL ? "*** NULL ***" : "OK", useCache == NULL ? "*** NULL ***" : "OK"); - return; - } - patchCache = useCache; - poly = usePoly; - mixType = patchCache->structureMix; - structurePosition = patchCache->structurePosition; - - play = true; - initKeyFollow(poly->freqnum); // Initialises noteVal, filtVal and realVal -#if MT32EMU_ACCURATENOTES == 0 - noteLookup = &synth->tables.noteLookups[noteVal - LOWEST_NOTE]; -#else - Tables::initNote(synth, ¬eLookupStorage, noteVal, (float)synth->myProp.sampleRate, synth->masterTune, synth->pcmWaves, NULL); -#endif - keyLookup = &synth->tables.keyLookups[poly->freqnum - 12]; - - if (patchCache->PCMPartial) { - pcmNum = patchCache->pcm; - if (synth->controlROMMap->pcmCount > 128) { - // CM-32L, etc. support two "banks" of PCMs, selectable by waveform type parameter. - if (patchCache->waveform > 1) { - pcmNum += 128; - } - } - pcmWave = &synth->pcmWaves[pcmNum]; - } else { - pcmWave = NULL; - } - - lfoPos = 0; - pulsewidth = patchCache->pulsewidth + synth->tables.pwVelfollowAdd[patchCache->pwsens][poly->vel]; - if (pulsewidth > 100) { - pulsewidth = 100; - } else if (pulsewidth < 0) { - pulsewidth = 0; - } - - for (int e = 0; e < 3; e++) { - envs[e].envpos = 0; - envs[e].envstat = -1; - envs[e].envbase = 0; - envs[e].envdist = 0; - envs[e].envsize = 0; - envs[e].sustaining = false; - envs[e].decaying = false; - envs[e].prevlevel = 0; - envs[e].counter = 0; - envs[e].count = 0; - } - ampEnvVal = 0; - pitchEnvVal = 0; - pitchSustain = false; - loopPos = 0; - partialOff.pcmoffset = partialOff.pcmplace = 0; - pair = pairPartial; - useNoisePair = pairPartial == NULL && (mixType == 1 || mixType == 2); - age = 0; - alreadyOutputed = false; - memset(history,0,sizeof(history)); -} - -Bit16s *Partial::generateSamples(long length) { - if (!isActive() || alreadyOutputed) { - return NULL; - } - if (poly == NULL) { - synth->printDebug("*** ERROR: poly is NULL at Partial::generateSamples()!"); - return NULL; - } - - alreadyOutputed = true; - - // Generate samples - - Bit16s *partialBuf = &myBuffer[0]; - Bit32u volume = *poly->volumeptr; - while (length--) { - Bit32s envval; - Bit32s sample = 0; - if (!envs[EnvelopeType_amp].sustaining) { - if (envs[EnvelopeType_amp].count <= 0) { - Bit32u ampval = getAmpEnvelope(); - if (!play) { - deactivate(); - break; - } - if (ampval > 100) { - ampval = 100; - } - - ampval = synth->tables.volumeMult[ampval]; - ampval = FIXEDPOINT_UMULT(ampval, synth->tables.tvaVelfollowMult[poly->vel][(int)patchCache->ampEnv.velosens], 8); - //if (envs[EnvelopeType_amp].sustaining) - ampEnvVal = ampval; - } - --envs[EnvelopeType_amp].count; - } - - unsigned int lfoShift = 0x1000; - if (pitchSustain) { - // Calculate LFO position - // LFO does not kick in completely until pitch envelope sustains - if (patchCache->lfodepth > 0) { - lfoPos++; - if (lfoPos >= patchCache->lfoperiod) - lfoPos = 0; - int lfoatm = FIXEDPOINT_UDIV(lfoPos, patchCache->lfoperiod, 16); - int lfoatr = synth->tables.sintable[lfoatm]; - lfoShift = synth->tables.lfoShift[patchCache->lfodepth][lfoatr]; - } - } else { - // Calculate Pitch envelope - envval = getPitchEnvelope(); - int pd = patchCache->pitchEnv.depth; - pitchEnvVal = synth->tables.pitchEnvVal[pd][envval]; - } - - int delta; - - // Wrap positions or end if necessary - if (patchCache->PCMPartial) { - // PCM partial - - delta = noteLookup->wavTable[pcmNum]; - int len = pcmWave->len; - if (partialOff.pcmplace >= len) { - if (pcmWave->loop) { - //partialOff.pcmplace = partialOff.pcmoffset = 0; - partialOff.pcmplace %= len; - } else { - play = false; - deactivate(); - break; - } - } - } else { - // Synthesis partial - delta = 0x10000; - partialOff.pcmplace %= (Bit16u)noteLookup->div2; - } - - // Build delta for position of next sample - // Fix delta code - Bit32u tdelta = delta; -#if MT32EMU_ACCURATENOTES == 0 - tdelta = FIXEDPOINT_UMULT(tdelta, fineShift, 12); -#endif - tdelta = FIXEDPOINT_UMULT(tdelta, pitchEnvVal, 12); - tdelta = FIXEDPOINT_UMULT(tdelta, lfoShift, 12); - tdelta = FIXEDPOINT_UMULT(tdelta, bendShift, 12); - delta = (int)tdelta; - - // Get waveform - either PCM or synthesized sawtooth or square - if (ampEnvVal > 0) { - if (patchCache->PCMPartial) { - // Render PCM sample - int ra, rb, dist; - Bit32u taddr; - Bit32u pcmAddr = pcmWave->addr; - if (delta < 0x10000) { - // Linear sound interpolation - taddr = pcmAddr + partialOff.pcmplace; - ra = synth->pcmROMData[taddr]; - taddr++; - if (taddr == pcmAddr + pcmWave->len) { - // Past end of PCM - if (pcmWave->loop) { - rb = synth->pcmROMData[pcmAddr]; - } else { - rb = 0; - } - } else { - rb = synth->pcmROMData[taddr]; - } - dist = rb - ra; - sample = (ra + ((dist * (Bit32s)(partialOff.pcmoffset >> 8)) >> 8)); - } else { - // Sound decimation - // The right way to do it is to use a lowpass filter on the waveform before selecting - // a point. This is too slow. The following approximates this as fast as possible - int idelta = delta >> 16; - taddr = pcmAddr + partialOff.pcmplace; - ra = synth->pcmROMData[taddr++]; - for (int ix = 0; ix < idelta - 1; ix++) { - if (taddr == pcmAddr + pcmWave->len) { - // Past end of PCM - if (pcmWave->loop) { - taddr = pcmAddr; - } else { - // Behave as if all subsequent samples were 0 - break; - } - } - ra += synth->pcmROMData[taddr++]; - } - sample = ra / idelta; - } - } else { - // Render synthesised sample - int toff = partialOff.pcmplace; - int minorplace = partialOff.pcmoffset >> 14; - Bit32s filterInput; - Bit32s filtval = getFiltEnvelope(); - - //synth->printDebug("Filtval: %d", filtval); - - if ((patchCache->waveform & 1) == 0) { - // Square waveform. Made by combining two pregenerated bandlimited - // sawtooth waveforms - Bit32u ofsA = ((toff << 2) + minorplace) % noteLookup->waveformSize[0]; - int width = FIXEDPOINT_UMULT(noteLookup->div2, synth->tables.pwFactor[pulsewidth], 7); - Bit32u ofsB = (ofsA + width) % noteLookup->waveformSize[0]; - Bit16s pa = noteLookup->waveforms[0][ofsA]; - Bit16s pb = noteLookup->waveforms[0][ofsB]; - filterInput = pa - pb; - // Non-bandlimited squarewave - /* - ofs = FIXEDPOINT_UMULT(noteLookup->div2, synth->tables.pwFactor[patchCache->pulsewidth], 8); - if (toff < ofs) - sample = 1 * WGAMP; - else - sample = -1 * WGAMP; - */ - } else { - // Sawtooth. Made by combining the full cosine and half cosine according - // to how it looks on the MT-32. What it really does it takes the - // square wave and multiplies it by a full cosine - int waveoff = (toff << 2) + minorplace; - if (toff < noteLookup->sawTable[pulsewidth]) - filterInput = noteLookup->waveforms[1][waveoff % noteLookup->waveformSize[1]]; - else - filterInput = noteLookup->waveforms[2][waveoff % noteLookup->waveformSize[2]]; - // This is the correct way - // Seems slow to me (though bandlimited) -- doesn't seem to - // sound any better though - /* - //int pw = (patchCache->pulsewidth * pulsemod[filtval]) >> 8; - - Bit32u ofs = toff % (noteLookup->div2 >> 1); - - Bit32u ofs3 = toff + FIXEDPOINT_UMULT(noteLookup->div2, synth->tables.pwFactor[patchCache->pulsewidth], 9); - ofs3 = ofs3 % (noteLookup->div2 >> 1); - - pa = noteLookup->waveforms[0][ofs]; - pb = noteLookup->waveforms[0][ofs3]; - sample = ((pa - pb) * noteLookup->waveforms[2][toff]) / 2; - */ - } - - //Very exact filter - if (filtval > ((FILTERGRAN * 15) / 16)) - filtval = ((FILTERGRAN * 15) / 16); - sample = (Bit32s)(floorf((synth->iirFilter)((float)filterInput, &history[0], synth->tables.filtCoeff[filtval][(int)patchCache->filtEnv.resonance])) / synth->tables.resonanceFactor[patchCache->filtEnv.resonance]); - if (sample < -32768) { - synth->printDebug("Overdriven amplitude for %d: %d:=%d < -32768", patchCache->waveform, filterInput, sample); - sample = -32768; - } - else if (sample > 32767) { - synth->printDebug("Overdriven amplitude for %d: %d:=%d > 32767", patchCache->waveform, filterInput, sample); - sample = 32767; - } - } - } - - // Add calculated delta to our waveform offset - Bit32u absOff = ((partialOff.pcmplace << 16) | partialOff.pcmoffset); - absOff += delta; - partialOff.pcmplace = (Bit16u)((absOff & 0xFFFF0000) >> 16); - partialOff.pcmoffset = (Bit16u)(absOff & 0xFFFF); - - // Put volume envelope over generated sample - sample = FIXEDPOINT_SMULT(sample, ampEnvVal, 9); - sample = FIXEDPOINT_SMULT(sample, volume, 7); - envs[EnvelopeType_amp].envpos++; - envs[EnvelopeType_pitch].envpos++; - envs[EnvelopeType_filt].envpos++; - - *partialBuf++ = (Bit16s)sample; - } - // We may have deactivated and broken out of the loop before the end of the buffer, - // if so then fill the remainder with 0s. - if (++length > 0) - memset(partialBuf, 0, length * 2); - return &myBuffer[0]; -} - -void Partial::setBend(float factor) { - if (!patchCache->useBender || factor == 0.0f) { - bendShift = 4096; - return; - } - // NOTE:KG: We can't do this smoothly with lookup tables, unless we use several MB. - // FIXME:KG: Bend should be influenced by pitch key-follow too, according to docs. - float bendSemitones = factor * patchCache->benderRange; // -24 .. 24 - float mult = powf(2.0f, bendSemitones / 12.0f); - synth->printDebug("setBend(): factor=%f, benderRange=%f, semitones=%f, mult=%f\n", factor, patchCache->benderRange, bendSemitones, mult); - bendShift = (int)(mult * 4096.0f); -} - -Bit16s *Partial::mixBuffers(Bit16s * buf1, Bit16s *buf2, int len) { - if (buf1 == NULL) - return buf2; - if (buf2 == NULL) - return buf1; - - Bit16s *outBuf = buf1; -#if MT32EMU_USE_MMX >= 1 - // KG: This seems to be fine - int donelen = i386_mixBuffers(buf1, buf2, len); - len -= donelen; - buf1 += donelen; - buf2 += donelen; -#endif - while (len--) { - *buf1 = *buf1 + *buf2; - buf1++, buf2++; - } - return outBuf; -} - -Bit16s *Partial::mixBuffersRingMix(Bit16s * buf1, Bit16s *buf2, int len) { - if (buf1 == NULL) - return NULL; - if (buf2 == NULL) { - Bit16s *outBuf = buf1; - while (len--) { - if (*buf1 < -8192) - *buf1 = -8192; - else if (*buf1 > 8192) - *buf1 = 8192; - buf1++; - } - return outBuf; - } - - Bit16s *outBuf = buf1; -#if MT32EMU_USE_MMX >= 1 - // KG: This seems to be fine - int donelen = i386_mixBuffersRingMix(buf1, buf2, len); - len -= donelen; - buf1 += donelen; - buf2 += donelen; -#endif - while (len--) { - float a, b; - a = ((float)*buf1) / 8192.0f; - b = ((float)*buf2) / 8192.0f; - a = (a * b) + a; - if (a>1.0) - a = 1.0; - if (a<-1.0) - a = -1.0; - *buf1 = (Bit16s)(a * 8192.0f); - buf1++; - buf2++; - //buf1[i] = (Bit16s)(((Bit32s)buf1[i] * (Bit32s)buf2[i]) >> 10) + buf1[i]; - } - return outBuf; -} - -Bit16s *Partial::mixBuffersRing(Bit16s * buf1, Bit16s *buf2, int len) { - if (buf1 == NULL) { - return NULL; - } - if (buf2 == NULL) { - return NULL; - } - - Bit16s *outBuf = buf1; -#if MT32EMU_USE_MMX >= 1 - // FIXME:KG: Not really checked as working - int donelen = i386_mixBuffersRing(buf1, buf2, len); - len -= donelen; - buf1 += donelen; - buf2 += donelen; -#endif - while (len--) { - float a, b; - a = ((float)*buf1) / 8192.0f; - b = ((float)*buf2) / 8192.0f; - a *= b; - if (a>1.0) - a = 1.0; - if (a<-1.0) - a = -1.0; - *buf1 = (Bit16s)(a * 8192.0f); - buf1++; - buf2++; - } - return outBuf; -} - -void Partial::mixBuffersStereo(Bit16s *buf1, Bit16s *buf2, Bit16s *outBuf, int len) { - if (buf2 == NULL) { - while (len--) { - *outBuf++ = *buf1++; - *outBuf++ = 0; - } - } else if (buf1 == NULL) { - while (len--) { - *outBuf++ = 0; - *outBuf++ = *buf2++; - } - } else { - while (len--) { - *outBuf++ = *buf1++; - *outBuf++ = *buf2++; - } - } -} - -bool Partial::produceOutput(Bit16s *partialBuf, long length) { - if (!isActive() || alreadyOutputed) - return false; - if (poly == NULL) { - synth->printDebug("*** ERROR: poly is NULL at Partial::produceOutput()!"); - return false; - } - - Bit16s *pairBuf = NULL; - // Check for dependant partial - if (pair != NULL) { - if (!pair->alreadyOutputed) { - // Note: pair may have become NULL after this - pairBuf = pair->generateSamples(length); - } - } else if (useNoisePair) { - // Generate noise for pairless ring mix - pairBuf = synth->tables.noiseBuf; - } - - Bit16s *myBuf = generateSamples(length); - - if (myBuf == NULL && pairBuf == NULL) - return false; - - Bit16s *p1buf, *p2buf; - - if (structurePosition == 0 || pairBuf == NULL) { - p1buf = myBuf; - p2buf = pairBuf; - } else { - p2buf = myBuf; - p1buf = pairBuf; - } - - //synth->printDebug("mixType: %d", mixType); - - Bit16s *mixedBuf; - switch (mixType) { - case 0: - // Standard sound mix - mixedBuf = mixBuffers(p1buf, p2buf, length); - break; - - case 1: - // Ring modulation with sound mix - mixedBuf = mixBuffersRingMix(p1buf, p2buf, length); - break; - - case 2: - // Ring modulation alone - mixedBuf = mixBuffersRing(p1buf, p2buf, length); - break; - - case 3: - // Stereo mixing. One partial to one speaker channel, one to another. - // FIXME:KG: Surely we should be multiplying by the left/right volumes here? - mixBuffersStereo(p1buf, p2buf, partialBuf, length); - return true; - - default: - mixedBuf = mixBuffers(p1buf, p2buf, length); - break; - } - - if (mixedBuf == NULL) - return false; - - Bit16s leftvol, rightvol; - leftvol = patchCache->pansetptr->leftvol; - rightvol = patchCache->pansetptr->rightvol; - -#if MT32EMU_USE_MMX >= 2 - // FIXME:KG: This appears to introduce crackle - int donelen = i386_partialProductOutput(length, leftvol, rightvol, partialBuf, mixedBuf); - length -= donelen; - mixedBuf += donelen; - partialBuf += donelen * 2; -#endif - while (length--) { - *partialBuf++ = (Bit16s)(((Bit32s)*mixedBuf * (Bit32s)leftvol) >> 15); - *partialBuf++ = (Bit16s)(((Bit32s)*mixedBuf * (Bit32s)rightvol) >> 15); - mixedBuf++; - } - return true; -} - -Bit32s Partial::getFiltEnvelope() { - int reshigh; - - int cutoff, depth; - - EnvelopeStatus *tStat = &envs[EnvelopeType_filt]; - - if (tStat->decaying) { - reshigh = tStat->envbase; - reshigh = (reshigh + ((tStat->envdist * tStat->envpos) / tStat->envsize)); - if (tStat->envpos >= tStat->envsize) - reshigh = 0; - } else { - if (tStat->envstat==4) { - reshigh = patchCache->filtsustain; - if (!poly->sustain) { - startDecay(EnvelopeType_filt, reshigh); - } - } else { - if ((tStat->envstat==-1) || (tStat->envpos >= tStat->envsize)) { - if (tStat->envstat==-1) - tStat->envbase = 0; - else - tStat->envbase = patchCache->filtEnv.envlevel[tStat->envstat]; - tStat->envstat++; - tStat->envpos = 0; - if (tStat->envstat == 3) { - tStat->envsize = synth->tables.envTime[(int)patchCache->filtEnv.envtime[tStat->envstat]]; - } else { - Bit32u envTime = (int)patchCache->filtEnv.envtime[tStat->envstat]; - if (tStat->envstat > 1) { - int envDiff = abs(patchCache->filtEnv.envlevel[tStat->envstat] - patchCache->filtEnv.envlevel[tStat->envstat - 1]); - if (envTime > synth->tables.envDeltaMaxTime[envDiff]) { - envTime = synth->tables.envDeltaMaxTime[envDiff]; - } - } - - tStat->envsize = (synth->tables.envTime[envTime] * keyLookup->envTimeMult[(int)patchCache->filtEnv.envtkf]) >> 8; - } - - tStat->envsize++; - tStat->envdist = patchCache->filtEnv.envlevel[tStat->envstat] - tStat->envbase; - } - - reshigh = tStat->envbase; - reshigh = (reshigh + ((tStat->envdist * tStat->envpos) / tStat->envsize)); - - } - tStat->prevlevel = reshigh; - } - - cutoff = patchCache->filtEnv.cutoff; - - //if (patchCache->waveform==1) reshigh = (reshigh * 3) >> 2; - - depth = patchCache->filtEnv.envdepth; - - //int sensedep = (depth * 127-patchCache->filtEnv.envsense) >> 7; - depth = FIXEDPOINT_UMULT(depth, synth->tables.tvfVelfollowMult[poly->vel][(int)patchCache->filtEnv.envsense], 8); - - int bias = patchCache->tvfbias; - int dist; - - if (bias != 0) { - //FIXME:KG: Is this really based on pitch (as now), or key pressed? - //synth->printDebug("Cutoff before %d", cutoff); - if (patchCache->tvfdir == 0) { - if (noteVal < bias) { - dist = bias - noteVal; - cutoff = FIXEDPOINT_UMULT(cutoff, synth->tables.tvfBiasMult[patchCache->tvfblevel][dist], 8); - } - } else { - // > Bias - if (noteVal > bias) { - dist = noteVal - bias; - cutoff = FIXEDPOINT_UMULT(cutoff, synth->tables.tvfBiasMult[patchCache->tvfblevel][dist], 8); - } - - } - //synth->printDebug("Cutoff after %d", cutoff); - } - - depth = (depth * keyLookup->envDepthMult[patchCache->filtEnv.envdkf]) >> 8; - reshigh = (reshigh * depth) >> 7; - - Bit32s tmp; - - cutoff *= filtVal; - cutoff /= realVal; //FIXME:KG: With filter keyfollow 0, this makes no sense. What's correct? - - reshigh *= filtVal; - reshigh /= realVal; //FIXME:KG: As above for cutoff - - if (patchCache->waveform == 1) { - reshigh = (reshigh * 65) / 100; - } - - if (cutoff > 100) - cutoff = 100; - else if (cutoff < 0) - cutoff = 0; - if (reshigh > 100) - reshigh = 100; - else if (reshigh < 0) - reshigh = 0; - tmp = noteLookup->nfiltTable[cutoff][reshigh]; - //tmp *= keyfollow; - //tmp /= realfollow; - - //synth->printDebug("Cutoff %d, tmp %d, freq %d", cutoff, tmp, tmp * 256); - return tmp; -} - -bool Partial::shouldReverb() { - if (!isActive()) - return false; - return patchCache->reverb; -} - -Bit32u Partial::getAmpEnvelope() { - Bit32s tc; - - EnvelopeStatus *tStat = &envs[EnvelopeType_amp]; - - if (!play) - return 0; - - if (tStat->decaying) { - tc = tStat->envbase; - tc += (tStat->envdist * tStat->envpos) / tStat->envsize; - if (tc < 0) - tc = 0; - if ((tStat->envpos >= tStat->envsize) || (tc == 0)) { - play = false; - // Don't have to worry about prevlevel storage or anything, this partial's about to die - return 0; - } - } else { - if ((tStat->envstat == -1) || (tStat->envpos >= tStat->envsize)) { - if (tStat->envstat == -1) - tStat->envbase = 0; - else - tStat->envbase = patchCache->ampEnv.envlevel[tStat->envstat]; - tStat->envstat++; - tStat->envpos = 0; - if (tStat->envstat == 4) { - //synth->printDebug("Envstat %d, size %d", tStat->envstat, tStat->envsize); - tc = patchCache->ampEnv.envlevel[3]; - if (!poly->sustain) - startDecay(EnvelopeType_amp, tc); - else - tStat->sustaining = true; - goto PastCalc; - } - Bit8u targetLevel = patchCache->ampEnv.envlevel[tStat->envstat]; - tStat->envdist = targetLevel - tStat->envbase; - Bit32u envTime = patchCache->ampEnv.envtime[tStat->envstat]; - if (targetLevel == 0) { - tStat->envsize = synth->tables.envDecayTime[envTime]; - } else { - int envLevelDelta = abs(tStat->envdist); - if (envTime > synth->tables.envDeltaMaxTime[envLevelDelta]) { - envTime = synth->tables.envDeltaMaxTime[envLevelDelta]; - } - tStat->envsize = synth->tables.envTime[envTime]; - } - - // Time keyfollow is used by all sections of the envelope (confirmed on CM-32L) - tStat->envsize = FIXEDPOINT_UMULT(tStat->envsize, keyLookup->envTimeMult[(int)patchCache->ampEnv.envtkf], 8); - - switch (tStat->envstat) { - case 0: - //Spot for velocity time follow - //Only used for first attack - tStat->envsize = FIXEDPOINT_UMULT(tStat->envsize, synth->tables.envTimeVelfollowMult[(int)patchCache->ampEnv.envvkf][poly->vel], 8); - //synth->printDebug("Envstat %d, size %d", tStat->envstat, tStat->envsize); - break; - case 1: - case 2: - case 3: - //synth->printDebug("Envstat %d, size %d", tStat->envstat, tStat->envsize); - break; - default: - synth->printDebug("Invalid TVA envelope number %d hit!", tStat->envstat); - break; - } - - tStat->envsize++; - - if (tStat->envdist != 0) { - tStat->counter = abs(tStat->envsize / tStat->envdist); - //synth->printDebug("Pos %d, envsize %d envdist %d", tStat->envstat, tStat->envsize, tStat->envdist); - } else { - tStat->counter = 0; - //synth->printDebug("Pos %d, envsize %d envdist %d", tStat->envstat, tStat->envsize, tStat->envdist); - } - } - tc = tStat->envbase; - tc = (tc + ((tStat->envdist * tStat->envpos) / tStat->envsize)); - tStat->count = tStat->counter; -PastCalc: - tc = (tc * (Bit32s)patchCache->ampEnv.level) / 100; - } - - // Prevlevel storage is bottle neck - tStat->prevlevel = tc; - - //Bias level crap stuff now - - for (int i = 0; i < 2; i++) { - if (patchCache->ampblevel[i]!=0) { - int bias = patchCache->ampbias[i]; - if (patchCache->ampdir[i]==0) { - // < Bias - if (noteVal < bias) { - int dist = bias - noteVal; - tc = FIXEDPOINT_UMULT(tc, synth->tables.tvaBiasMult[patchCache->ampblevel[i]][dist], 8); - } - } else { - // > Bias - if (noteVal > bias) { - int dist = noteVal - bias; - tc = FIXEDPOINT_UMULT(tc, synth->tables.tvaBiasMult[patchCache->ampblevel[i]][dist], 8); - } - } - } - } - if (tc < 0) { - synth->printDebug("*** ERROR: tc < 0 (%d) at getAmpEnvelope()", tc); - tc = 0; - } - return (Bit32u)tc; -} - -Bit32s Partial::getPitchEnvelope() { - EnvelopeStatus *tStat = &envs[EnvelopeType_pitch]; - - Bit32s tc; - pitchSustain = false; - if (tStat->decaying) { - if (tStat->envpos >= tStat->envsize) - tc = patchCache->pitchEnv.level[4]; - else { - tc = tStat->envbase; - tc = (tc + ((tStat->envdist * tStat->envpos) / tStat->envsize)); - } - } else { - if (tStat->envstat==3) { - tc = patchCache->pitchsustain; - if (poly->sustain) - pitchSustain = true; - else - startDecay(EnvelopeType_pitch, tc); - } else { - if ((tStat->envstat==-1) || (tStat->envpos >= tStat->envsize)) { - tStat->envstat++; - - tStat->envbase = patchCache->pitchEnv.level[tStat->envstat]; - - Bit32u envTime = patchCache->pitchEnv.time[tStat->envstat]; - int envDiff = abs(patchCache->pitchEnv.level[tStat->envstat] - patchCache->pitchEnv.level[tStat->envstat + 1]); - if (envTime > synth->tables.envDeltaMaxTime[envDiff]) { - envTime = synth->tables.envDeltaMaxTime[envDiff]; - } - - tStat->envsize = (synth->tables.envTime[envTime] * keyLookup->envTimeMult[(int)patchCache->pitchEnv.timekeyfollow]) >> 8; - - tStat->envpos = 0; - tStat->envsize++; - tStat->envdist = patchCache->pitchEnv.level[tStat->envstat + 1] - tStat->envbase; - } - tc = tStat->envbase; - tc = (tc + ((tStat->envdist * tStat->envpos) / tStat->envsize)); - } - tStat->prevlevel = tc; - } - return tc; -} - -void Partial::startDecayAll() { - startDecay(EnvelopeType_amp, envs[EnvelopeType_amp].prevlevel); - startDecay(EnvelopeType_filt, envs[EnvelopeType_filt].prevlevel); - startDecay(EnvelopeType_pitch, envs[EnvelopeType_pitch].prevlevel); - pitchSustain = false; -} - -void Partial::startDecay(EnvelopeType envnum, Bit32s startval) { - EnvelopeStatus *tStat = &envs[envnum]; - - tStat->sustaining = false; - tStat->decaying = true; - tStat->envpos = 0; - tStat->envbase = startval; - - switch (envnum) { - case EnvelopeType_amp: - tStat->envsize = FIXEDPOINT_UMULT(synth->tables.envDecayTime[(int)patchCache->ampEnv.envtime[4]], keyLookup->envTimeMult[(int)patchCache->ampEnv.envtkf], 8); - tStat->envdist = -startval; - break; - case EnvelopeType_filt: - tStat->envsize = FIXEDPOINT_UMULT(synth->tables.envDecayTime[(int)patchCache->filtEnv.envtime[4]], keyLookup->envTimeMult[(int)patchCache->filtEnv.envtkf], 8); - tStat->envdist = -startval; - break; - case EnvelopeType_pitch: - tStat->envsize = FIXEDPOINT_UMULT(synth->tables.envDecayTime[(int)patchCache->pitchEnv.time[3]], keyLookup->envTimeMult[(int)patchCache->pitchEnv.timekeyfollow], 8); - tStat->envdist = patchCache->pitchEnv.level[4] - startval; - break; - default: - break; - } - tStat->envsize++; -} |