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ninstance.instantiate.h
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ninstance.instantiate.h
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/* defines ninstance::instantiate function */
#pragma once
#include <vector>
namespace ninstance {
using namespace std;
using namespace nrpngen;
struct srpnatom {
uatom atom;
eatom type;
};
struct srpnstack {
double *var;
double start, end;
double minstart, maxend;
unsigned int maxdelay;
double rate;
double magnitude;
vector<srpnatom> atom;
ninstruction::sinst *insts;
nfilter::cfilter **filters;
int curinst;
int curfilter;
srpnstack() {
var = 0;
start = 0.0;
end = 0.0;
minstart = 0.0;
maxend = 0.0;
maxdelay = 0;
rate = 48000.0; // to avoid divide by zero if this were 0
insts = 0;
filters = 0;
curinst = 0;
curfilter = 0;
}
~srpnstack() {
delete [] var;
}
void setstart(double newstart) {
start = newstart;
minstart = start < minstart ? start : minstart;
}
void setend(double newend) {
end = newend;
maxend = end > maxend ? end : maxend;
}
};
bool insthandler(srpnstack *rpnstack, char opcode);
bool ophandler(srpnstack *rpnstack, eoperator op);
}
#include "ninstance.instantiate.handlers.h"
namespace ninstance {
sinstance *instantiate(srpnsource *rpnsource) {
if (!rpnsource) return 0;
char *err = "failed to allocate memory in ninstance::instantiate()";
srpnstack *rpnstack = new srpnstack;
if (rpnstack) {
double *var = new double[rpnsource->varcount];
for (int i = 0; i < rpnsource->varcount; ++i) var[i] = 0.0;
if (var) {
ninstruction::sinst *insts = new ninstruction::sinst[rpnsource->instcount];
if (insts) {
nfilter::cfilter **filters = new nfilter::cfilter*[rpnsource->filtercount];
if (filters) {
rpnstack->var = var;
rpnstack->insts = insts;
rpnstack->filters = filters;
bool good = true;
for (int s = 0; s < rpnsource->size && good; ++s) { // iterate through all statements
for (int i = 0; i < rpnsource->statement[s]->size && good; ++i) { // iterate through all atoms
srpnatom atom;
atom.atom = rpnsource->statement[s]->atom[i];
atom.type = rpnsource->statement[s]->type[i];
//nrpngen::readatom(atom.type, atom.atom);
switch (atom.type) {
case INST:
good = insthandler(rpnstack, atom.atom.inst);
break;
case REG:
case VAR:
case NUM:
rpnstack->atom.push_back(atom);
break;
case OP:
good = ophandler(rpnstack, atom.atom.op);
break;
default:
err = "unexpected atom type in rpnsource in ninstance::instantiate";
good = false;
break;
}
}
}
if (good) {
sinstance *instance = new sinstance;
if (instance) {
nclip::uacc *accumulators = new nclip::uacc[rpnsource->instcount];
if (accumulators) {
for (int i = 0; i < rpnsource->instcount; ++i) accumulators[i].d = 0.0;
instance->instduration = rpnstack->maxend - rpnstack->minstart;
instance->filterduration = instance->instduration + (double)rpnstack->maxdelay * nregister::rrate;
instance->insts = insts;
instance->accumulators = accumulators;
instance->filters = filters;
instance->instcount = rpnsource->instcount;
instance->filtercount = rpnsource->filtercount;
delete rpnstack;
return instance;
}
delete instance;
}
}
delete [] filters;
}
delete [] insts;
}
delete [] var;
}
delete rpnstack;
}
cerr << err << endl;
return 0;
}
}