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PanzerDelay.cpp
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PanzerDelay.cpp
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <math.h>
#include <windef.h>
#include <MachineInterface.h>
#include <mdk/mdk.h>
#include "../dspchips/DSPChips.h"
#define MAX_TAPS 4
// 200 ms at 44100 Hz
#define MAX_DELAY 131072
#define DELAY_MASK 131070
///////////////////////////////////////////////////////////////////////////////////
CMachineParameter const paraDryAmp =
{
pt_byte, // type
"Dry amp",
"Dry amp [dB]", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
240
};
CMachineParameter const paraDryLeftPan =
{
pt_byte, // type
"Dry L Pan",
"Dry left channel pan", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
0
};
CMachineParameter const paraDryRightPan =
{
pt_byte, // type
"Dry R Pan",
"Dry right channel pan", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
240
};
CMachineParameter const paraDelayUnit =
{
pt_byte, // type
"Delay unit",
"Delay unit", // description
0, // MinValue
3, // MaxValue
255, // NoValue
MPF_STATE, // Flags
0
};
CMachineParameter const paraFilterType =
{
pt_byte, // type
"Filter type",
"Filter type", // description
0, // MinValue
3, // MaxValue
255, // NoValue
MPF_STATE, // Flags
0
};
CMachineParameter const paraCutoff =
{
pt_byte, // type
"Cutoff",
"Cutoff frequency", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
120
};
CMachineParameter const paraResonance =
{
pt_byte, // type
"Resonance",
"Resonance", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
120
};
CMachineParameter const paraLeftDelayLen =
{
pt_word, // type
"L Delay Len",
"Length of the left delay line", // description
1, // MinValue
20000, // MaxValue
255, // NoValue
MPF_STATE, // Flags
3
};
CMachineParameter const paraRightDelayLen =
{
pt_word, // type
"R Delay Len",
"Length of the right delay line", // description
1, // MinValue
20000, // MaxValue
255, // NoValue
MPF_STATE, // Flags
3
};
CMachineParameter const paraWetAmp =
{
pt_byte, // type
"Tap Amp",
"Tap Amp Position", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
240
};
CMachineParameter const paraWetLeftPan =
{
pt_byte, // type
"Wet L Pan",
"Tap left channel pan position", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
240
};
CMachineParameter const paraWetRightPan =
{
pt_byte, // type
"Wet R Pan",
"Tap right channel pan position", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
0
};
CMachineParameter const paraFeedback =
{
pt_byte, // type
"FB Amp",
"FB Amplitude", // description
0, // MinValue
239, // MaxValue
255, // NoValue
MPF_STATE, // Flags
150
};
CMachineParameter const paraFeedbackLeftPan =
{
pt_byte, // type
"FB L Pan",
"FB left channel pan position", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
240
};
CMachineParameter const paraFeedbackRightPan =
{
pt_byte, // type
"FB R Pan",
"FB right channel pan position", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
0
};
CMachineParameter const paraPingPong =
{
pt_byte, // type
"FB PingPong",
"Reverse channels in feedback", // description
0, // MinValue
1, // MaxValue
255, // NoValue
MPF_STATE, // Flags
0
};
CMachineParameter const paraSpread =
{
pt_byte, // type
"FB Spread",
"Stereo spread in feedback", // description
0, // MinValue
240, // MaxValue
255, // NoValue
MPF_STATE, // Flags
120
};
CMachineParameter const *pParameters[] =
{
¶DryAmp,
¶DryLeftPan,
¶DryRightPan,
¶DelayUnit,
¶FilterType,
¶Cutoff,
¶Resonance,
¶LeftDelayLen,
¶RightDelayLen,
¶WetAmp,
¶WetLeftPan,
¶WetRightPan,
¶Feedback,
¶PingPong,
¶Spread,
// ¶FeedbackLeftPan,
// ¶FeedbackRightPan,
};
/*
CMachineAttribute const *pAttributes[] =
{
};
*/
#pragma pack(1)
class gvals
{
public:
byte dryamp;
byte dryleftpan;
byte dryrightpan;
byte delayunit;
byte filtertype;
byte cutoff;
byte resonance;
};
class tvals
{
public:
word leftdelaylen;
word rightdelaylen;
byte wetamp;
byte leftpanpos;
byte rightpanpos;
byte feedbackamp;
byte pingpong;
byte spread;
// byte fblpanpos;
// byte fbrpanpos;
};
// FIXME: unused
class avals
{
public:
int lfoshape;
};
#pragma pack()
CMachineInfo const MacInfo =
{
MT_EFFECT, // type
MI_VERSION,
MIF_DOES_INPUT_MIXING, // flags
1, // min tracks
MAX_TAPS, // max tracks
7, // numGlobalParameters
8, // numTrackParameters
pParameters,
0, // sizeof(pAttributes)/4, // 1 (numAttributes)
NULL, //pAttributes, // pAttributes
#ifdef _DEBUG
"FSM PanzerDelay (Debug build)", // name
#else
"FSM PanzerDelay",
#endif
"PanzDelay", // short name
"Krzysztof Foltman", // author
"A&bout"
};
class CTrack
{
public:
word leftdelaylen;
word rightdelaylen;
byte wetamp;
byte leftpanpos;
byte rightpanpos;
byte fbimage;
byte feedbackamp;
byte pingpong;
byte spread;
int LeftDelaySamples;
int RightDelaySamples;
float WetAmp;
float Feedback;
};
class miex : public CMDKMachineInterfaceEx
{
};
class mi : public CMDKMachineInterface
{
public:
miex ex;
bool isstereo;
virtual CMDKMachineInterfaceEx *GetEx() { return &ex; }
virtual void OutputModeChanged(bool stereo) { }
mi();
virtual ~mi();
virtual void MDKInit(CMachineDataInput * const pi);
virtual void MDKSave(CMachineDataOutput * const po) {}
virtual void Tick();
virtual bool MDKWork(float *psamples, int numsamples, int const mode);
virtual bool MDKWorkStereo(float *psamples, int numsamples, int const mode);
virtual void SetNumTracks(int const n);
//virtual void AttributesChanged();
virtual char const *DescribeValue(int const param, int const value);
virtual void Command(int const i);
private:
void InitTrack(int const i);
void ResetTrack(int const i);
void TickTrack(CTrack *pt, tvals *ptval);
void PrepareTrack(int tno);
void WorkTrackStereo(CTrack *pt, float *pin, float *pout, int numsamples, int const mode);
public:
int nEmptySamples;
float *Buffer;
int Pos;
int DelayUnit;
float DryOut,DryLeftPan,DryRightPan;
float FeedbackLimiter;
int numTracks;
CTrack Tracks[MAX_TAPS];
int FilterType,Cutoff,Resonance;
CBiquad m_filterL, m_filterR;
CUglyLimiter m_limL, m_limR;
private:
avals aval;
gvals gval;
tvals tval[MAX_TAPS];
};
DLL_EXPORTS
mi::mi()
{
//fprintf(stderr,"%s:%s\n",__FILE__,__PRETTY_FUNCTION__);
GlobalVals = &gval;
TrackVals = tval;
AttrVals = (int *)&aval;
Buffer = new float[MAX_DELAY];
}
mi::~mi()
{
delete []Buffer;
numTracks=-1;
//fprintf(stderr,"%s:%s\n",__FILE__,__PRETTY_FUNCTION__);
}
char const *mi::DescribeValue(int const param, int const value)
{
static char txt[16];
switch(param)
{
case 0:
case 9:
case 12:
if (value)
sprintf(txt, "%4.1f dB", (double)(value/10.0-24.0) );
else
sprintf(txt, "-inf dB");
break;
case 3:
if (value==0) strcpy(txt,"Ticks");
if (value==1) strcpy(txt,"Ticks/256");
if (value==2) strcpy(txt,"Samples");
if (value==3) strcpy(txt,"milisecs");
break;
case 4:
if (value==0) strcpy(txt,"None");
if (value==1) strcpy(txt,"LP");
if (value==2) strcpy(txt,"HP");
if (value==3) strcpy(txt,"BP");
break;
case 1:
case 2:
case 10:
case 11:
if (value<120) sprintf(txt,"%d%% L",(120-value)*100/120);
else if (value==120) strcpy(txt,"Mid");
else sprintf(txt,"%d%% R",(value-120)*100/120);
break;
case 13:
if (value==0) strcpy(txt,"Off");
if (value==1) strcpy(txt,"On");
break;
case 14:
if (value<120) sprintf(txt,"%d%% inside",(120-value)*100/120);
else if (value==120) strcpy(txt,"No change");
else sprintf(txt,"%d%% outside",(value-120)*100/120);
break;
default:
return NULL;
}
return txt;
}
void mi::TickTrack(CTrack *pt, tvals *ptval)
{
if (ptval->leftdelaylen != paraLeftDelayLen.NoValue)
pt->leftdelaylen=ptval->leftdelaylen;
if (ptval->rightdelaylen != paraRightDelayLen.NoValue)
pt->rightdelaylen=ptval->rightdelaylen;
if (ptval->leftpanpos != paraWetLeftPan.NoValue)
pt->leftpanpos=ptval->leftpanpos;
if (ptval->rightpanpos!= paraWetRightPan.NoValue)
pt->rightpanpos=ptval->rightpanpos;
if (ptval->spread != paraSpread.NoValue)
pt->spread=ptval->spread;
if (ptval->wetamp != paraWetAmp.NoValue)
{
pt->wetamp=ptval->wetamp;
if (pt->wetamp)
pt->WetAmp=(float)pow(2.0,(pt->wetamp/10.0-24.0)/6.0);
else
pt->WetAmp=0.0f;
}
if (ptval->feedbackamp != paraFeedback.NoValue)
{
pt->feedbackamp=ptval->feedbackamp;
if (pt->feedbackamp)
pt->Feedback=(float)pow(2.0,(pt->feedbackamp/10.0-24.0)/6.0);
else
pt->Feedback=0.0f;
}
if (ptval->pingpong!= paraPingPong.NoValue)
pt->pingpong=ptval->pingpong;
pt->LeftDelaySamples=2*DelayLenToSamples(DelayUnit,pt->leftdelaylen,pMasterInfo->SamplesPerTick,pMasterInfo->SamplesPerSec);
if (pt->LeftDelaySamples<100) pt->LeftDelaySamples=100;
if (pt->LeftDelaySamples>DELAY_MASK-400) pt->LeftDelaySamples=DELAY_MASK-400;
pt->RightDelaySamples=2*DelayLenToSamples(DelayUnit,pt->rightdelaylen,pMasterInfo->SamplesPerTick,pMasterInfo->SamplesPerSec);
if (pt->RightDelaySamples<100) pt->RightDelaySamples=100;
if (pt->RightDelaySamples>DELAY_MASK-400) pt->RightDelaySamples=DELAY_MASK-400;
}
void mi::Tick()
{
if (gval.dryamp!=paraDryAmp.NoValue)
{
if (gval.dryamp)
DryOut=(float)pow(2.0,(gval.dryamp/10.0-24.0)/6.0);
else
DryOut=0.0f;
}
if (gval.delayunit!=paraDelayUnit.NoValue)
DelayUnit=gval.delayunit;
if (gval.dryleftpan!=paraDryLeftPan.NoValue)
DryLeftPan=gval.dryleftpan;
if (gval.dryrightpan!=paraDryRightPan.NoValue)
DryRightPan=gval.dryrightpan;
if (gval.filtertype!=paraFilterType.NoValue)
FilterType=gval.filtertype;
if (gval.cutoff!=paraCutoff.NoValue)
Cutoff=gval.cutoff;
if (gval.resonance!=paraResonance.NoValue)
Resonance=gval.resonance;
for (int c = 0; c < numTracks; c++)
TickTrack(&Tracks[c], &tval[c]);
}
void mi::MDKInit(CMachineDataInput * const pi)
{
numTracks = 1;
nEmptySamples = 0;
for (int c=0; c<MAX_DELAY; c++)
Buffer[c]=0.0f;
Pos=0;
SetOutputMode(true);
}
void mi::SetNumTracks(int const n)
{
if (numTracks < n)
{
for (int c = numTracks; c < n; c++)
InitTrack(c);
}
else if (n < numTracks)
{
for (int c = n; c < numTracks; c++)
ResetTrack(c);
}
numTracks = n;
}
void mi::InitTrack(int const i)
{
}
void mi::ResetTrack(int const i)
{
}
void mi::PrepareTrack(int tno)
{
}
bool mi::MDKWork(float *psamples, int numsamples, int const mode)
{
return false;
}
void mi::WorkTrackStereo(CTrack *trk, float *pin, float *pout, int numsamples, int const mode)
{
int nPos=Pos&DELAY_MASK;
float DryLeftLeftAmp=(float)(DryOut*sqrt(1-DryLeftPan/240.0));
float DryLeftRightAmp=(float)(DryOut*sqrt(DryLeftPan/240.0));
float DryRightLeftAmp=(float)(DryOut*sqrt(1-DryRightPan/240.0));
float DryRightRightAmp=(float)(DryOut*sqrt(DryRightPan/240.0));
float WetLeftLeftAmp=(float)(trk->WetAmp*sqrt(1-trk->leftpanpos/240.0));
float WetLeftRightAmp=(float)(trk->WetAmp*sqrt(trk->leftpanpos/240.0));
float WetRightLeftAmp=(float)(trk->WetAmp*sqrt(1-trk->rightpanpos/240.0));
float WetRightRightAmp=(float)(trk->WetAmp*sqrt(trk->rightpanpos/240.0));
float FeedbackAmp=(float)trk->Feedback*FeedbackLimiter;
bool first=trk==Tracks;
float FBThis=float(FeedbackAmp*(1-fabs((120-trk->spread)/240.0)));
float FBReverse=float(FeedbackAmp*(120-trk->spread)/240.0);
for (int i=0; i<2*numsamples; i+=2)
{
float WetLeftValue=Buffer[(nPos-trk->LeftDelaySamples)&DELAY_MASK];
float WetRightValue=Buffer[1+((nPos-trk->RightDelaySamples)&DELAY_MASK)];
if (fabs(WetLeftValue)<1) WetLeftValue=0.0f;
if (fabs(WetRightValue)<1) WetRightValue=0.0f;
switch(trk->pingpong+2*!first)
{
case 3:
pout[i]+=WetLeftValue*WetLeftLeftAmp+WetRightValue*WetRightLeftAmp,
pout[i+1]+=WetLeftValue*WetLeftRightAmp+WetRightValue*WetRightRightAmp,
Buffer[nPos]+=FBThis*WetRightValue+FBReverse*WetLeftValue,
Buffer[nPos+1]+=FBThis*WetLeftValue+FBReverse*WetRightValue;
break;
case 2:
pout[i]+=pin[i]*DryLeftLeftAmp+pin[i+1]*DryRightLeftAmp+WetLeftValue*WetLeftLeftAmp+WetRightValue*WetRightLeftAmp,
pout[i+1]+=pin[i]*DryLeftRightAmp+pin[i+1]*DryRightRightAmp+WetLeftValue*WetLeftRightAmp+WetRightValue*WetRightRightAmp,
Buffer[nPos]+=FBReverse*WetRightValue+FBThis*WetLeftValue,
Buffer[nPos+1]+=FBReverse*WetLeftValue+FBThis*WetRightValue;
break;
case 1:
pout[i]=pin[i]*DryLeftLeftAmp+pin[i+1]*DryRightLeftAmp+WetLeftValue*WetLeftLeftAmp+WetRightValue*WetRightLeftAmp,
pout[i+1]=pin[i]*DryLeftRightAmp+pin[i+1]*DryRightRightAmp+WetLeftValue*WetLeftRightAmp+WetRightValue*WetRightRightAmp,
Buffer[nPos]=pin[i]+FBThis*WetRightValue+FBReverse*WetLeftValue,
Buffer[nPos+1]=pin[i+1]+FBThis*WetLeftValue+FBReverse*WetRightValue;
break;
case 0:
pout[i]=pin[i]*DryLeftLeftAmp+pin[i+1]*DryRightLeftAmp+WetLeftValue*WetLeftLeftAmp+WetRightValue*WetRightLeftAmp,
pout[i+1]=pin[i]*DryLeftRightAmp+pin[i+1]*DryRightRightAmp+WetLeftValue*WetLeftRightAmp+WetRightValue*WetRightRightAmp,
Buffer[nPos]=pin[i]+FBReverse*WetRightValue+FBThis*WetLeftValue,
Buffer[nPos+1]=pin[i+1]+FBReverse*WetLeftValue+FBThis*WetRightValue;
break;
}
nPos=(nPos+2)&DELAY_MASK;
}
}
bool mi::MDKWorkStereo(float *psamples, int numsamples, int const mode)
{
float Fb=0;
int nMaxDelay=1;
for (int i=0; i<numTracks; i++)
{
Fb+=(float)fabs(Tracks[i].Feedback);
nMaxDelay=__max(Tracks[i].LeftDelaySamples,nMaxDelay);
nMaxDelay=__max(Tracks[i].RightDelaySamples,nMaxDelay);
}
FeedbackLimiter=(float)((Fb>0.9999)?(0.9999/Fb):0.9999);
if (mode & WM_READ)
{
nEmptySamples=0;
}
else
{
if (nEmptySamples>512 && pow(Fb*FeedbackLimiter,nEmptySamples/float(nMaxDelay))<(4.0/32767))
return false;
for (int i=0; i<2*numsamples; i++)
psamples[i]=0.0;
nEmptySamples+=numsamples;
}
float *paux = pCB->GetAuxBuffer();
int so=0, maxs=96;
if (numTracks>0)
{
for (int i=0; i<numTracks; i++)
{
if (f2i(Tracks[i].LeftDelaySamples)<maxs)
maxs=f2i(Tracks[i].LeftDelaySamples);
if (f2i(Tracks[i].RightDelaySamples)<maxs)
maxs=f2i(Tracks[i].RightDelaySamples);
}
}
// FIXME: unused
//if (!aval.lfoshape)
for (int i=0; i<numTracks; i++)
PrepareTrack(i);
Pos&=DELAY_MASK;
while(so<numsamples)
{
int end=__min(so+maxs,numsamples);
for (int c = 0; c < numTracks; c++)
WorkTrackStereo(Tracks + c, psamples+so*2, paux+so*2, end-so, mode);
if (FilterType)
{
m_limL.AvoidExceptions();
m_filterL.AvoidExceptions();
m_filterR.AvoidExceptions();
float CF=440*pow(8000.0/440.0,Cutoff/240.0);
float Q=0.01+0.99*Resonance/240.0;
switch(FilterType)
{
case 1:
m_filterL.rbjLPF(CF,Q,44100);
m_filterR.rbjLPF(CF,Q,44100);
break;
case 2:
m_filterL.rbjHPF(CF,Q,44100);
m_filterR.rbjHPF(CF,Q,44100);
break;
case 3:
m_filterL.rbjBPF(CF,Q,44100);
m_filterR.rbjBPF(CF,Q,44100);
break;
}
for (int i=2*so; i<2*end; i+=2)
{
float &ValL=Buffer[(Pos+i-2*so)&DELAY_MASK];
float &ValR=Buffer[1+((Pos+i-2*so)&DELAY_MASK)];
ValL=m_filterL.ProcessSample(ValL);
ValR=m_filterL.ProcessSample(ValR);
m_limL.ProcessSample(0.5f*(ValL+ValR));
ValL*=m_limL.m_fFactor;
ValR*=m_limL.m_fFactor;
}
}
Pos=(Pos+2*(end-so))&DELAY_MASK;
so=end;
}
if (!(mode&WM_WRITE))
return false;
memcpy(psamples,paux,numsamples*8);
int *pint=(int *)paux;
for (int i=0; i<2*numsamples; i++)
if ((pint[i]&0x7FFFFFFF)>=0x3F800000)
return true;
return false;
}
void mi::Command(int const i)
{
pCB->MessageBox("FSM PanzerDelay version 0.6 buzztard edition\nWritten by Krzysztof Foltman (kf@cw.pl), Gfx by Oom\nSpecial thx to: oskari [esp. for FP tricks!], canc3r, Oom, Zephod, Thev, HymaX, cmicali and all #buzz crew\n\n\n");
}