First commit.

This commit is contained in:
Robin Davies
2021-08-15 12:42:46 -04:00
commit d8a6022947
264 changed files with 95068 additions and 0 deletions
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#pragma once
#include "IEffect.hpp"
#include "PiPedalException.hpp"
#include "PiPedalMath.hpp"
namespace pipedal
{
enum class SplitType
{
Ab = 0,
Mix = 1,
Lr = 2
};
class Lv2PluginInfo;
class Lv2PortInfo;
const Lv2PluginInfo *GetSplitterPluginInfo();
const Lv2PortInfo *GetBypassPortInfo();
const double SPLIT_DB_MIN = -60;
inline SplitType valueToSplitType(float value)
{
switch ((int)value)
{
case 0:
return SplitType::Ab;
case 1:
return SplitType::Mix;
case 2:
return SplitType::Lr;
default:
return SplitType::Ab;
}
};
class SplitEffect : public IEffect
{
private:
const double MIX_TRANSITION_TIME_S = 0.1;
double sampleRate;
std::vector<float *> inputs;
std::vector<float *> topInputs;
std::vector<float *> bottomInputs;
std::vector<float *> topOutputs;
std::vector<float *> bottomOutputs;
std::vector<float *> mixTopInputs;
std::vector<float *> mixBottomInputs;
std::vector<float *> outputBuffers;
int numberOfOutputPorts;
SplitType splitType = SplitType::Ab;
float mix = 0;
float panL = 0;
float volL = -3;
float panR = 0;
float volR = -3;
float currentMix = 0;
float targetBlendLTop = 0.5;
float targetBlendRTop = 0.5;
float targetBlendLBottom = 0.5;
float targetBlendRBottom = 0.5;
float blendLTop = 0.5;
float blendRTop = 0.5;
float blendLBottom = 0.5;
float blendRBottom = 0.5;
float blendDxLTop = 0;
float blendDxRTop = 0;
float blendDxLBottom = 0;
float blendDxRBottom = 0;
int32_t blendFadeSamples;
bool selectA = true;
bool activated = false;
using MixFunction = void (SplitEffect::*)(uint32_t frames);
MixFunction preAbTop;
MixFunction preAbBottom;
void Copy(float *input, float *output, uint32_t frames)
{
for (int i = 0; i < frames; ++i)
{
output[i] = input[i];
}
}
void AbTopMonoMono(uint32_t frames)
{
Copy(this->inputs[0], this->topInputs[0], frames);
}
void AbTopMonoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->topInputs[0], frames);
Copy(this->inputs[0], this->topInputs[1], frames);
}
void AbTopStereoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->topInputs[0], frames);
Copy(this->inputs[1], this->topInputs[1], frames);
}
void AbBottomMonoMono(uint32_t frames)
{
Copy(this->inputs[0], this->bottomInputs[0], frames);
}
void AbBottomMonoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->bottomInputs[0], frames);
Copy(this->inputs[0], this->bottomInputs[1], frames);
}
void AbBottomStereoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->bottomInputs[0], frames);
Copy(this->inputs[1], this->bottomInputs[1], frames);
}
void LrTopMonoMono(uint32_t frames)
{
Copy(this->inputs[0], this->topInputs[0], frames);
}
void LrTopMonoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->topInputs[0], frames);
Copy(this->inputs[0], this->topInputs[1], frames);
}
void LrTopStereoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->topInputs[0], frames);
Copy(this->inputs[0], this->topInputs[1], frames);
}
void LrBottomMonoMono(uint32_t frames)
{
Copy(this->inputs[0], this->bottomInputs[0], frames);
}
void LrBottomMonoStereo(uint32_t frames)
{
Copy(this->inputs[0], this->bottomInputs[0], frames);
Copy(this->inputs[0], this->bottomInputs[1], frames);
}
void LrBottomStereoStereo(uint32_t frames)
{
Copy(this->inputs[1], this->bottomInputs[0], frames);
Copy(this->inputs[1], this->bottomInputs[1], frames);
}
void UpdateMixFunction()
{
if (activated)
{
// Input Mix Functions.
if (splitType != SplitType::Lr)
{
if (this->inputs.size() == 1)
{
if (this->topInputs.size() == 1)
this->preAbTop = &SplitEffect::AbTopMonoMono;
else
{
this->preAbTop = &SplitEffect::AbTopMonoStereo;
}
if (this->bottomInputs.size() == 1)
{
this->preAbBottom = &SplitEffect::AbBottomMonoMono;
}
else
{
this->preAbBottom = &SplitEffect::AbBottomMonoStereo;
}
}
else
{
if (this->topInputs.size() == 1)
{
this->preAbTop == &SplitEffect::AbTopMonoMono;
}
else
{
this->preAbTop = &SplitEffect::AbTopStereoStereo;
}
if (this->bottomInputs.size() == 1)
{
this->preAbBottom == &SplitEffect::AbBottomMonoMono;
}
else
{
this->preAbBottom = &SplitEffect::AbBottomStereoStereo;
}
}
}
else
{
if (this->inputs.size() == 1)
{
if (this->topInputs.size() == 1)
this->preAbTop = &SplitEffect::LrTopMonoMono;
else
{
this->preAbTop = &SplitEffect::LrTopMonoStereo;
}
if (this->bottomInputs.size() == 1)
{
this->preAbBottom = &SplitEffect::LrBottomMonoMono;
}
else
{
this->preAbBottom = &SplitEffect::LrBottomMonoStereo;
}
}
else
{
if (this->topInputs.size() == 1)
{
this->preAbTop == &SplitEffect::LrTopMonoMono;
}
else
{
this->preAbTop = &SplitEffect::LrTopStereoStereo;
}
if (this->bottomInputs.size() == 1)
{
this->preAbBottom == &SplitEffect::LrBottomMonoMono;
}
else
{
this->preAbBottom = &SplitEffect::LrBottomStereoStereo;
}
}
}
if (splitType == SplitType::Ab)
{
mixTo(selectA ? -1 : 1);
}
else if (splitType == SplitType::Mix)
{
mixTo(mix);
}
else
{
mixTo(panL, volL, panR, volR);
}
}
}
long instanceId;
virtual uint8_t *GetAtomInputBuffer() { return nullptr; }
virtual uint8_t *GetAtomOutputBuffer() { return nullptr; }
virtual void RequestParameter(LV2_URID uridUri) {}
virtual void GatherParameter(RealtimeParameterRequest *pRequest) {}
virtual std::string AtomToJson(uint8_t *pAtom) { return ""; }
public:
SplitEffect(
long instanceId,
double sampleRate,
const std::vector<float *> &inputs)
: instanceId(instanceId), inputs(inputs), sampleRate(sampleRate)
{
}
~SplitEffect()
{
}
virtual long GetInstanceId() const
{
return instanceId;
}
void Activate()
{
activated = true;
UpdateMixFunction();
snapToMixTarget();
mixBottomInputs.clear();
mixTopInputs.clear();
if (outputBuffers.size() == 1)
{
mixTopInputs.push_back(this->topOutputs[0]);
mixBottomInputs.push_back(this->bottomOutputs[0]);
}
else
{
if (this->topOutputs.size() == 1)
{
mixTopInputs.push_back(topOutputs[0]);
mixTopInputs.push_back(topOutputs[0]);
}
else
{
mixTopInputs.push_back(topOutputs[0]);
mixTopInputs.push_back(topOutputs[1]);
}
if (this->bottomOutputs.size() == 1)
{
mixBottomInputs.push_back(bottomOutputs[0]);
mixBottomInputs.push_back(bottomOutputs[0]);
}
else
{
mixBottomInputs.push_back(bottomOutputs[0]);
mixBottomInputs.push_back(bottomOutputs[1]);
}
}
}
void Deactivate()
{
activated = false;
}
void SetChainBuffers(
const std::vector<float *> &topInputs,
const std::vector<float *> &bottomInputs,
const std::vector<float *> &topOutputs,
const std::vector<float *> &bottomOutputs)
{
this->topInputs = topInputs;
this->bottomInputs = bottomInputs;
this->topOutputs = topOutputs;
this->bottomOutputs = bottomOutputs;
numberOfOutputPorts = topOutputs.size() > 1 || bottomOutputs.size() > 1 ? 2 : 1;
outputBuffers.resize(numberOfOutputPorts);
}
virtual void ResetAtomBuffers() {}
virtual int GetControlIndex(const std::string &symbol) const
{
if (symbol == "splitType")
return 0;
if (symbol == "select")
return 1;
if (symbol == "mix")
return 2;
return -1;
}
void snapToMixTarget()
{
this->blendLTop = targetBlendLTop;
this->blendRTop = targetBlendRTop;
this->blendRBottom = targetBlendRBottom;
this->blendLBottom = targetBlendLBottom;
this->blendFadeSamples = 0;
this->blendDxLTop = 0;
this->blendDxRTop = 0;
this->blendDxLBottom = 0;
this->blendDxRBottom = 0;
}
void mixToTarget()
{
uint32_t transitionSamples = (uint32_t)(this->sampleRate * MIX_TRANSITION_TIME_S);
if (transitionSamples < 1)
transitionSamples = 1;
double dxScale = 1.0 / transitionSamples;
this->blendFadeSamples = transitionSamples;
this->blendDxLTop = dxScale * (this->targetBlendLTop - this->blendLTop);
this->blendDxRTop = dxScale * (this->targetBlendRTop - this->blendRTop);
this->blendDxLBottom = dxScale * (this->targetBlendLBottom - this->blendLBottom);
this->blendDxRBottom = dxScale * (this->targetBlendRBottom - this->blendRBottom);
}
void mixTo(float value)
{
float blend = (value + 1) * 0.5f;
this->targetBlendRTop = this->targetBlendLTop = 1 - blend;
this->targetBlendLBottom = this->targetBlendLBottom = blend;
mixToTarget();
}
void mixTo(float panL, float volL, float panR, float volR)
{
float aTop = (volL <= SPLIT_DB_MIN) ? 0 : db2a(volL);
float aBottom = (volL <= SPLIT_DB_MIN) ? 0 : db2a(volR);
if (this->outputBuffers.size() == 1)
{
// ignore pan. The R values actually have no effect.
this->targetBlendLTop = this->targetBlendRTop = aTop;
this->targetBlendLBottom = this->targetBlendRBottom = aBottom;
}
else
{
float blendTop = (panL + 1) * 0.5;
float blendBottom = (panR + 1) * 0.5;
this->targetBlendLTop = (1 - blendTop) * aTop;
this->targetBlendRTop = (blendTop)*aTop;
this->targetBlendLBottom = (1 - blendBottom) * aBottom;
this->targetBlendRBottom = (blendBottom)*aBottom;
}
mixToTarget();
}
virtual void SetBypass(bool enabled)
{
throw PiPedalArgumentException("Not implmented. Should not have been called.");
}
virtual float GetOutputControlValue(int index) const {
return GetControlValue(index);
}
virtual float GetControlValue(int portIndex) const
{
switch (portIndex)
{
case -1: /* (bypass) */
return 1;
case 0:
{
return (int)(this->splitType);
}
case 1:
{
return selectA ? 0 : 1;
}
case 2:
return mix;
case 3:
return this->panL;
case 4:
return this->volL;
case 5:
return this->panR;
case 6:
return this->volR;
default:
throw PiPedalArgumentException("Invalid argument");
}
}
virtual void SetControl(int index, float value)
{
switch (index)
{
case -1: /* (bypass) */
return; // no can bypass.
case 0:
{
SplitType t = valueToSplitType(value);
if (splitType != t)
{
splitType = t;
UpdateMixFunction();
}
break;
}
case 1:
{
bool t = value == 0;
if (selectA != t)
{
selectA = t;
if (splitType == SplitType::Ab)
{
mixTo(selectA ? -1 : 1);
}
}
break;
}
case 2:
mix = value;
if (splitType == SplitType::Mix)
{
mixTo(value);
}
break;
case 3:
panL = value;
if (splitType == SplitType::Lr)
{
mixTo(panL, volL, panR, volR);
}
break;
case 4:
volL = value;
if (splitType == SplitType::Lr)
{
mixTo(panL, volL, panR, volR);
}
break;
case 5:
panR = value;
if (splitType == SplitType::Lr)
{
mixTo(panL, volL, panR, volR);
}
break;
case 6:
volR = value;
if (splitType == SplitType::Lr)
{
mixTo(panL, volL, panR, volR);
}
break;
}
}
virtual int GetNumberOfOutputAudioPorts() const
{
return numberOfOutputPorts;
}
virtual int GetNumberOfInputAudioPorts() const
{
return (int)this->inputs.size();
}
virtual float *GetAudioInputBuffer(int index) const
{
return inputs[index];
}
virtual float *GetAudioOutputBuffer(int index) const
{
return this->outputBuffers[index];
}
virtual void SetAudioOutputBuffer(int index, float *buffer)
{
outputBuffers[index] = buffer;
}
void PreMix(uint32_t frames)
{
(this->*preAbTop)(frames);
(this->*preAbBottom)(frames);
}
void PostMixMono(uint32_t frames)
{
uint32_t ix = 0;
float *top = this->mixTopInputs[0];
float *bottom = this->mixBottomInputs[0];
float *output = this->outputBuffers[0];
while (frames)
{
if (this->blendFadeSamples != 0)
{
uint32_t framesThisTime = this->blendFadeSamples < frames ? this->blendFadeSamples : frames;
for (uint32_t i = 0; i < framesThisTime; ++i)
{
output[ix] = blendLBottom * bottom[ix] + blendLTop * top[ix];
++ix;
this->blendLTop += this->blendDxLTop;
this->blendLBottom += this->blendDxLBottom;
}
this->blendFadeSamples -= framesThisTime;
frames -= framesThisTime;
if (blendFadeSamples == 0)
{
this->blendLTop = this->targetBlendLTop;
this->blendLBottom = this->targetBlendLBottom;
this->blendDxLTop = this->blendDxLBottom = 0;
}
}
else
{
float blendTop = this->blendLTop;
float blendBottom = this->blendLBottom;
while (frames--)
{
output[ix] = blendBottom * bottom[ix] + blendTop * top[ix];
++ix;
}
return;
}
}
}
void PostMixStereo(uint32_t frames)
{
uint32_t ix = 0;
float *top = this->mixTopInputs[0];
float *bottom = this->mixBottomInputs[0];
float *output = this->outputBuffers[0];
float *topR = this->mixTopInputs[1];
float *bottomR = this->mixBottomInputs[1];
float *outputR = this->outputBuffers[1];
while (frames != 0)
{
if (this->blendFadeSamples != 0)
{
uint32_t framesThisTime = this->blendFadeSamples < frames ? this->blendFadeSamples : frames;
for (int i = 0; i < framesThisTime; ++i)
{
output[ix] = blendLBottom * bottom[ix] + blendLTop * top[ix];
outputR[ix] = blendRBottom * bottomR[ix] + blendRTop * topR[ix];
++ix;
this->blendLTop += this->blendDxLTop;
this->blendRTop += this->blendDxRTop;
this->blendLBottom += this->blendDxLBottom;
this->blendRBottom += this->blendDxRBottom;
}
blendFadeSamples -= framesThisTime;
frames -= framesThisTime;
if (blendFadeSamples == 0)
{
this->blendLTop = this->targetBlendLTop;
this->blendRTop = this->targetBlendRTop;
this->blendLBottom = this->targetBlendLBottom;
this->blendRBottom = this->targetBlendRBottom;
this->blendDxLTop = this->blendDxRTop = this->blendDxLBottom = this->blendDxRBottom = 0;
}
}
else
{
float blendLTop = this->blendLTop;
float blendRTop = this->blendRTop;
float blendLBottom = this->blendLBottom;
float blendRBottom = this->blendRBottom;
for (int i = 0; i < frames; ++i)
{
output[ix] = blendLBottom * bottom[ix] + blendLTop * top[ix];
outputR[ix] = blendRBottom * bottomR[ix] + blendRTop * topR[ix];
++ix;
}
return;
}
}
}
void PostMix(uint32_t frames)
{
if (this->outputBuffers.size() == 1)
{
PostMixMono(frames);
}
else
{
PostMixStereo(frames);
}
}
};
} // namespace