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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_rearr.h"
#include "oploop.h"
#include "oppermute.h"
/*! \brief vasp shift or rotation
\todo units for shift
*/
Vasp *VaspOp::m_shift(OpParam &p,CVasp &src,const Argument &arg,CVasp *dst,BL shift,BL symm)
{
Vasp *ret = NULL;
RVecBlock *vecs = GetRVecs(p.opname,src,dst);
if(vecs) {
if(arg.IsList() && arg.GetList().Count() >= 1 && flext::CanbeFloat(arg.GetList()[0])) {
// shift length
p.sh.sh = flext::GetAFloat(arg.GetList()[0]);
}
else {
post("%s - invalid argument -> set to 0",p.opname);
p.sh.sh = 0;
}
ret = DoOp(vecs,shift?VecOp::d_shift:VecOp::d_rot,p,symm);
delete vecs;
}
return ret;
}
/*! \brief shift buffer
*/
BL VecOp::d_shift(OpParam &p)
{
if(p.ovrlap) {
post("%s - cannot operate on overlapped vectors",p.opname);
return false;
}
I ish = (I)p.sh.sh;
if(p.sh.sh != ish) { // integer shift
// requires interpolation
post("non-integer shift not implemented - truncating to integer");
p.sh.sh = ish;
}
p.SkipOddMiddle();
if(p.symm == 1) ish = -ish;
I aish = abs(ish);
if(aish > p.frames) aish = ish = p.frames;
I i,cnt = p.frames-aish;
const S *sd = p.rsdt-ish*p.rss;
S *dd = p.rddt;
if(ish > 0) {
sd += (p.frames-1)*p.rss,dd += (p.frames-1)*p.rds;
p.rss = -p.rss,p.rds = -p.rds;
}
// do shift
if(cnt > 0) {
if(p.rss == 1 && p.rds == 1)
_DE_LOOP(i,cnt, ( *(dd++) = *(sd++) ) )
else if(p.rss == -1 && p.rds == -1)
_DE_LOOP(i,cnt, ( *(dd--) = *(sd--) ) )
else
_DE_LOOP(i,cnt, ( *dd = *sd,sd += p.rss,dd += p.rds ) )
}
// fill spaces
if(p.sh.fill) {
S vfill = p.sh.fill == 1?0:dd[-p.rds];
I aish = abs(ish);
if(p.rds == 1)
_DE_LOOP(i,aish, ( *(dd++) = vfill ) )
else if(p.rds == -1)
_DE_LOOP(i,aish, ( *(dd--) = vfill ) )
else
_DE_LOOP(i,aish, ( *dd = vfill,dd += p.rds ) )
}
return true;
}
class vasp_shift:
public vasp_anyop
{
FLEXT_HEADER_S(vasp_shift,vasp_anyop,Setup)
public:
vasp_shift(I argc,const t_atom *argv):
vasp_anyop(argc,argv,VASP_ARG_I(0),true),
fill(xsf_zero)
{}
static V Setup(t_classid c)
{
FLEXT_CADDATTR_VAR1_E(c,"fill",fill);
}
enum xs_fill {
xsf__ = -1, // don't change
xsf_none = 0,xsf_zero,xsf_edge
};
virtual Vasp *do_shift(OpParam &p)
{
CVasp cdst(dst),cref(ref);
return VaspOp::m_shift(p,cref,arg,&cdst);
}
virtual Vasp *tx_work(const Argument &arg)
{
OpParam p(thisName(),0);
p.sh.fill = (I)fill;
Vasp *ret = do_shift(p);
return ret;
}
virtual V m_help() { post("%s - Shifts buffer data",thisName()); }
protected:
xs_fill fill;
private:
FLEXT_ATTRVAR_E(fill,xs_fill)
};
VASP_LIB_V("vasp.shift",vasp_shift)
class vasp_xshift:
public vasp_shift
{
FLEXT_HEADER(vasp_xshift,vasp_shift)
public:
vasp_xshift(I argc,const t_atom *argv): vasp_shift(argc,argv) {}
virtual Vasp *do_shift(OpParam &p)
{
CVasp cdst(dst),cref(ref);
return VaspOp::m_xshift(p,cref,arg,&cdst);
}
virtual V m_help() { post("%s - Shifts buffer data symmetrically (in two halves)",thisName()); }
};
VASP_LIB_V("vasp.xshift",vasp_xshift)
inline int rotation(int ij, int n,OpParam &p) { return (ij+n-p.sh.ish)%n; }
#define ROTBLOCK 1024
/*! \brief rotate buffer
\todo implement temporary storage for faster transformation (use abstract permute algorithm)
*/
BL VecOp::d_rot(OpParam &p)
{
if(p.ovrlap) {
post("%s - cannot operate on overlapped vectors",p.opname);
return false;
}
p.sh.ish = (I)p.sh.sh;
if(p.sh.sh != p.sh.ish) {
// requires interpolation
post("%s - non-integer shift not implemented - truncating to integer",p.opname);
}
p.SkipOddMiddle();
p.sh.ish = p.sh.ish%p.frames;
if(p.symm == 1) p.sh.ish = -p.sh.ish;
/*
if(p.frames >= ROTBLOCK) {
//use temporary space;
S *tmp = new S[ROTBLOCK];
delete[] tmp;
}
else
*/
PERMUTATION(S,1,p,rotation);
return true;
}
VASP_ANYOP("vasp.rot",rot,0,true,VASP_ARG_I(0),"Rotates buffer data")
VASP_ANYOP("vasp.xrot",xrot,0,true,VASP_ARG_I(0),"Rotates buffer data symmetrically (in two halves)")
/*! \brief mirror buffer
*/
BL VecOp::d_mirr(OpParam &p)
{
if(p.ovrlap) {
post("%s - cannot operate on overlapped vectors",p.opname);
return false;
}
p.SkipOddMiddle();
if(p.rsdt == p.rddt) {
S *dl = p.rddt,*du = p.rddt+(p.frames-1)*p.rds;
register S t;
_DE_WHILE(dl < du, ( t = *dl, *dl = *du, *du = t, dl += p.rds,du -= p.rds ) )
}
else {
I i;
const S *ds = p.rsdt;
S *dd = p.rddt+(p.frames-1)*p.rds;
_DE_LOOP(i,p.frames, ( *dd = *ds,ds += p.rss,dd -= p.rds ) )
}
return true;
}
/*! \brief vasp mirror
*/
Vasp *VaspOp::m_mirr(OpParam &p,CVasp &src,CVasp *dst,BL symm)
{
Vasp *ret = NULL;
RVecBlock *vecs = GetRVecs(p.opname,src,dst);
if(vecs) {
ret = DoOp(vecs,VecOp::d_mirr,p,symm);
delete vecs;
}
return ret;
}
VASP_UNARY("vasp.mirr",mirr,true,"Mirrors buffer data")
VASP_UNARY("vasp.xmirr",xmirr,true,"Mirrors buffer data symmetrically (in two halves)")
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