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Add pan/span control to Voice backend

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This commit is contained in:
Jack Andersen
2016-05-21 11:40:03 -10:00
parent d06fa3f0dc
commit d551b2b1c6
9 changed files with 112 additions and 42 deletions
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106
lib/Voice.cpp
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@@ -39,10 +39,6 @@ Voice::Voice(Engine& engine, const AudioGroup& group, int groupId, ObjectId oid,
void Voice::_reset()
{
m_curVol = 1.f;
m_curReverbVol = 0.f;
m_curPan = 0.f;
m_curSpan = 0.f;
m_curAftertouch = 0;
m_pitchWheelUp = 600;
m_pitchWheelDown = 600;
@@ -56,6 +52,7 @@ void Voice::_reset()
m_pitchSweep2It = 0;
m_envelopeTime = -1.f;
m_panningTime = -1.f;
m_spanningTime = -1.f;
m_vibratoLevel = 0;
m_vibratoModLevel = 0;
m_vibratoPeriod = 0.f;
@@ -268,7 +265,7 @@ bool Voice::_advanceSample(int16_t& samp, int32_t& newPitch)
float start = (m_panPos - 64) / 64.f;
float end = (m_panPos + m_panWidth - 64) / 64.f;
float t = std::max(0.f, std::min(1.f, m_panningTime / m_panningDur));
m_curPan = (start * (1.0f - t)) + (end * t);
_setPan((start * (1.0f - t)) + (end * t));
refresh = true;
/* Done with panning */
@@ -283,7 +280,7 @@ bool Voice::_advanceSample(int16_t& samp, int32_t& newPitch)
float start = (m_spanPos - 64) / 64.f;
float end = (m_spanPos + m_spanWidth - 64) / 64.f;
float t = std::max(0.f, std::min(1.f, m_spanningTime / m_spanningDur));
m_curSpan = (start * (1.0f - t)) + (end * t);
_setSurroundPan((start * (1.0f - t)) + (end * t));
refresh = true;
/* Done with spanning */
@@ -377,7 +374,7 @@ size_t Voice::supplyAudio(size_t samples, int16_t* data)
}
/* Per-sample processing */
for (int i=0 ; i<decSamples ; ++i)
for (uint32_t i=0 ; i<decSamples ; ++i)
{
++samplesProc;
++m_curSamplePos;
@@ -425,7 +422,7 @@ size_t Voice::supplyAudio(size_t samples, int16_t* data)
}
/* Per-sample processing */
for (int i=0 ; i<decSamples ; ++i)
for (uint32_t i=0 ; i<decSamples ; ++i)
{
++samplesProc;
++m_curSamplePos;
@@ -478,6 +475,8 @@ std::shared_ptr<Voice> Voice::_startChildMacro(ObjectId macroId, int macroStep,
return {};
}
vox->setVolume(m_userVol);
vox->setPan(m_userPan);
vox->setSurroundPan(m_userSpan);
return vox;
}
@@ -511,7 +510,11 @@ bool Voice::_loadKeymap(const Keymap* keymap, int macroStep, double ticksPerSec,
{
const Keymap& km = keymap[midiKey];
midiKey += km.transpose;
return loadSoundObject(SBig(km.objectId), macroStep, ticksPerSec, midiKey, midiVel, midiMod, pushPc);
bool ret = loadSoundObject(SBig(km.objectId), macroStep, ticksPerSec, midiKey, midiVel, midiMod, pushPc);
m_curVol = 1.f;
_setPan((km.pan - 64) / 64.f);
_setSurroundPan(-1.f);
return ret;
}
bool Voice::_loadLayer(const std::vector<const LayerMapping*>& layer, int macroStep, double ticksPerSec,
@@ -524,11 +527,26 @@ bool Voice::_loadLayer(const std::vector<const LayerMapping*>& layer, int macroS
{
uint8_t mappingKey = midiKey + mapping->transpose;
if (m_voxState != VoiceState::Playing)
{
ret |= loadSoundObject(SBig(mapping->objectId), macroStep, ticksPerSec,
mappingKey, midiVel, midiMod, pushPc);
m_curVol = mapping->volume / 127.f;
_setPan((mapping->pan - 64) / 64.f);
_setSurroundPan((mapping->span - 64) / 64.f);
}
else
ret |= _startChildMacro(SBig(mapping->objectId), macroStep, ticksPerSec,
mappingKey, midiVel, midiMod, pushPc).operator bool();
{
std::shared_ptr<Voice> vox =
_startChildMacro(SBig(mapping->objectId), macroStep, ticksPerSec,
mappingKey, midiVel, midiMod, pushPc);
if (vox)
{
vox->m_curVol = mapping->volume / 127.f;
vox->_setPan((mapping->pan - 64) / 64.f);
vox->_setSurroundPan((mapping->span - 64) / 64.f);
ret = true;
}
}
}
}
return ret;
@@ -617,7 +635,7 @@ void Voice::startSample(int16_t sampId, int32_t offset)
{
if (m_curSample->first.m_loopLengthSamples)
{
if (offset > m_curSample->first.m_loopStartSample)
if (offset > int32_t(m_curSample->first.m_loopStartSample))
offset = ((offset - m_curSample->first.m_loopStartSample) %
m_curSample->first.m_loopLengthSamples) +
m_curSample->first.m_loopStartSample;
@@ -669,16 +687,64 @@ void Voice::setVolume(float vol)
vox->setVolume(vol);
}
void Voice::setPan(float pan)
void Voice::_setPan(float pan)
{
m_curPan = clamp(-1.f, pan, 1.f);
float totalPan = clamp(-1.f, m_curPan + m_userPan, 1.f);
float totalSpan = clamp(-1.f, m_curSpan + m_userSpan, 1.f);
float coefs[8];
/* Left */
coefs[0] = (totalPan <= 0.f) ? 1.f : (1.f - totalPan);
coefs[0] *= (totalSpan <= 0.f) ? 1.f : (1.f - totalSpan);
/* Right */
coefs[1] = (totalPan >= 0.f) ? 1.f : (1.f + totalPan);
coefs[1] *= (totalSpan <= 0.f) ? 1.f : (1.f - totalSpan);
/* Back Left */
coefs[2] = (totalPan <= 0.f) ? 1.f : (1.f - totalPan);
coefs[2] *= (totalSpan >= 0.f) ? 1.f : (1.f + totalSpan);
/* Back Right */
coefs[3] = (totalPan >= 0.f) ? 1.f : (1.f + totalPan);
coefs[3] *= (totalSpan >= 0.f) ? 1.f : (1.f + totalSpan);
/* Center */
coefs[4] = 1.f - std::fabs(totalPan);
/* LFE */
coefs[5] = 1.f;
/* Side Left */
coefs[6] = (totalPan <= 0.f) ? 1.f : (1.f - totalPan);
coefs[6] *= 1.f - std::fabs(totalSpan);
/* Side Right */
coefs[7] = (totalPan >= 0.f) ? 1.f : (1.f + totalPan);
coefs[7] *= 1.f - std::fabs(totalSpan);
m_backendVoice->setMatrixCoefficients(coefs, true);
}
void Voice::setPan(float pan)
{
m_userPan = pan;
_setPan(m_curPan);
for (std::shared_ptr<Voice>& vox : m_childVoices)
vox->setPan(pan);
}
void Voice::setSurroundPan(float span)
void Voice::_setSurroundPan(float span)
{
m_curSpan = clamp(-1.f, span, 1.f);
_setPan(m_curPan);
}
void Voice::setSurroundPan(float span)
{
m_userSpan = span;
_setSurroundPan(m_curSpan);
for (std::shared_ptr<Voice>& vox : m_childVoices)
vox->setSurroundPan(span);
}
@@ -697,11 +763,11 @@ void Voice::startFadeIn(double dur, float vol, const Curve* envCurve)
m_envelopeTime = m_voiceTime;
m_envelopeDur = dur;
m_envelopeStart = 0.f;
m_envelopeEnd = clamp(0.f, m_curVol, 1.f);
m_envelopeEnd = clamp(0.f, vol, 1.f);
m_envelopeCurve = envCurve;
}
void Voice::startPanning(double dur, uint8_t panPos, uint8_t panWidth)
void Voice::startPanning(double dur, uint8_t panPos, int8_t panWidth)
{
m_panningTime = m_voiceTime;
m_panningDur = dur;
@@ -709,7 +775,7 @@ void Voice::startPanning(double dur, uint8_t panPos, uint8_t panWidth)
m_panWidth = panWidth;
}
void Voice::startSpanning(double dur, uint8_t spanPos, uint8_t spanWidth)
void Voice::startSpanning(double dur, uint8_t spanPos, int8_t spanWidth)
{
m_spanningTime = m_voiceTime;
m_spanningDur = dur;
@@ -736,7 +802,7 @@ void Voice::setPedal(bool pedal)
vox->setPedal(pedal);
}
void Voice::setDoppler(float doppler)
void Voice::setDoppler(float)
{
}
@@ -850,7 +916,7 @@ void Voice::setAftertouch(uint8_t aftertouch)
vox->setAftertouch(aftertouch);
}
void Voice::notifyCtrlChange(uint8_t ctrl, int8_t val)
void Voice::_notifyCtrlChange(uint8_t ctrl, int8_t val)
{
if (ctrl == 64)
{
@@ -861,7 +927,7 @@ void Voice::notifyCtrlChange(uint8_t ctrl, int8_t val)
}
for (std::shared_ptr<Voice>& vox : m_childVoices)
vox->notifyCtrlChange(ctrl, val);
vox->_notifyCtrlChange(ctrl, val);
}
size_t Voice::getTotalVoices() const