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/*
fhtfun.h:
Copyright (C) 1997 Paris Smaragdis, John ffitch
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
typedef struct{
OPDS h;
MYFLT *out, *as, *af, *len, *ovlp, *iwin, *bias;
AUXCH mem;
MYFLT *buffer_in1, *buffer_in2, *buffer_out;
FUNC *win;
MYFLT *in1, *in2, *w;
int32 m, count;
MYFLT s_ovlp;
} CON;
/* typedef struct{ */
/* OPDS h; */
/* MYFLT *out, *as, *imp, *iwin, *ienv; */
/* AUXCH mem; */
/* MYFLT *buffer_in, *buffer_out; */
/* FUNC *win; */
/* MYFLT *in, *in2, norm; */
/* int32 flen, count, count2; */
/* } CNV; */
/* typedef struct{ */
/* OPDS h; */
/* MYFLT *out, *as, *str, *len, *ovlp, *iwin; */
/* AUXCH mem; */
/* MYFLT *buffer_in, *buffer_out; */
/* FUNC *win; */
/* MYFLT *in; */
/* int32 m, count; */
/* } STCH; */
/* typedef struct{ */
/* OPDS h; */
/* MYFLT *out, *as, *af, *len, *ovlp, *iwin, *bias, *peaks; */
/* AUXCH mem; */
/* MYFLT *buffer_in, *buffer_in2, *buffer_out; */
/* FUNC *win; */
/* MYFLT *in, *in2, *mor; */
/* int32 *clx, *cly; */
/* int32 m, count; */
/* } MRH; */
static void getmag(MYFLT *x, int32 size);
static void mult(MYFLT *x, MYFLT *y, int32 size, MYFLT w);
static void lineaprox(MYFLT *x, int32 size, int32 m);
static void do_fht(MYFLT *real, int32 n);
static void do_ifht(MYFLT *real, int32 n);
static void pfht(MYFLT *fz, int32 n);
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