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/*
VASP modular - vector assembling signal processor / objects for Max/MSP and PD
Copyright (c) 2002 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "main.h"
#include "ops_search.h"
#include "util.h"
#include "oploop.h"
BL VecOp::d_search(OpParam &p)
{
const I off = p.srch.offs;
const S val = p.srch.val;
const R cur = p.rsdt[off];
I i,ofl = -1,ofr = -1;
if(p.srch.incl && cur == val) {
// if @incl attribute is set and current sample matches
ofl = ofr = off;
}
else {
if(p.srch.dir <= 0) {
BL y = cur >= val;
i = off-1;
_D_WHILE(i >= 0)
BL y2 = p.rsdt[i] >= val;
if(y != y2) {
if(p.srch.slope <= 0 && y2) break;
if(p.srch.slope >= 0 && !y2) break;
}
y = y2;
--i;
_E_WHILE
if(i >= 0) ofl = i;
}
if(p.srch.dir >= 0) {
BL y = cur >= val;
i = off+1;
_D_WHILE(i < p.frames)
BL y2 = p.rsdt[i] >= val;
if(y != y2) {
if(p.srch.slope <= 0 && !y2) break;
if(p.srch.slope >= 0 && y2) break;
}
y = y2;
++i;
_E_WHILE
if(i < p.frames) ofr = i;
}
}
if(!p.srch.dir) {
if(ofl >= 0) {
p.srch.dif = ofl-off;
if(ofr >= 0 && abs(p.srch.dif) < abs(ofr-off)) p.srch.dif = ofr-off;
}
else
p.srch.dif = ofr >= 0?ofr-off:0;
}
else if(p.srch.dir > 0)
p.srch.dif = ofr >= 0?ofr-off:0;
else
p.srch.dif = ofl >= 0?ofl-off:0;
return true;
}
Vasp *VaspOp::m_search(OpParam &p,CVasp &src,const Argument &arg,CVasp *dst,BL st)
{
Vasp *ret = NULL;
if(src.Vectors() != 1)
post("%s - Need exactly one vector in vasp!",p.opName());
else if(arg.CanbeFloat() || (arg.IsList() && arg.GetList().Count() >= 1)) {
I fr = src.Frames();
I o = src.Vector(0).Offset();
VBuffer *buf = src.Buffer(0);
I sz = buf->Frames();
delete buf;
CVasp all(src);
if(st) {
// search start point
p.srch.offs = o;
// set bounds of search buffer
all.Offset(0);
all.Frames(fr+o); // all frames of buffer
}
else {
// search end point
p.srch.offs = o+fr;
// check if current offset is past buffer
if(p.srch.offs >= sz) p.srch.offs = sz-1;
// set bounds of search buffer
all.Offset(o);
all.Frames(sz-o); // all frames of buffer
}
RVecBlock *vecs = GetRVecs(p.opname,all,dst);
if(vecs) {
p.srch.val = arg.IsList()?flext::GetAFloat(arg.GetList()[0]):arg.GetAFloat();
ret = DoOp(vecs,VecOp::d_search,p);
if(st) o += p.srch.dif,fr -= p.srch.dif;
else fr += p.srch.dif;
if(ret) {
ret->Offset(o);
ret->Frames(fr);
ret->Frames(ret->ChkFrames()); // What's that????
}
delete vecs;
}
}
else
post("%s - no arguments: no operation",p.opName());
return ret;
}
class vasp_search:
public vasp_anyop
{
FLEXT_HEADER_S(vasp_search,vasp_anyop,Setup)
public:
vasp_search(I argc,t_atom *argv):
vasp_anyop(argc,argv,VASP_ARG_R(0),false,XletCode(xlet_float,0)),
slope(0),dir(0),incl(false)
{}
static V Setup(t_classid c)
{
FLEXT_CADDATTR_VAR1(c,"dir",dir);
FLEXT_CADDATTR_VAR1(c,"slope",slope);
FLEXT_CADDATTR_VAR1(c,"incl",incl);
}
virtual Vasp *do_work(OpParam &p) = 0;
virtual Vasp *tx_work(const Argument &arg)
{
OpParam p(thisName(),1);
p.srch.dir = dir;
p.srch.slope = slope;
p.srch.incl = incl;
Vasp *ret = do_work(p);
if(ret) ToOutFloat(1,p.srch.dif);
return ret;
}
protected:
I dir,slope;
BL incl;
private:
FLEXT_ATTRVAR_I(dir)
FLEXT_ATTRVAR_I(slope)
FLEXT_ATTRVAR_B(incl)
};
class vasp_soffset:
public vasp_search
{
FLEXT_HEADER(vasp_soffset,vasp_search)
public:
vasp_soffset(I argc,t_atom *argv): vasp_search(argc,argv) {}
virtual Vasp *do_work(OpParam &p)
{
CVasp cdst(dst),cref(ref);
return VaspOp::m_soffset(p,cref,arg,&cdst);
}
virtual V m_help() { post("%s - Define starting point by searching for given value",thisName()); }
};
VASP_LIB_V("vasp.offset= vasp.o=",vasp_soffset)
class vasp_sframes:
public vasp_search
{
FLEXT_HEADER(vasp_sframes,vasp_search)
public:
vasp_sframes(I argc,t_atom *argv): vasp_search(argc,argv) {}
virtual Vasp *do_work(OpParam &p)
{
CVasp cdst(dst),cref(ref);
return VaspOp::m_sframes(p,cref,arg,&cdst);
}
virtual V m_help() { post("%s - Define vasp frame length by searching for given value",thisName()); }
};
VASP_LIB_V("vasp.frames= vasp.f=",vasp_sframes)
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