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/*
* Copyright (c) 2003 Matteo Frigo
* Copyright (c) 2003 Massachusetts Institute of Technology
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*
* This header file must include every file or define every
* type or macro which is required to compile a codelet.
*/
#ifndef __RDFT_CODELET_H__
#define __RDFT_CODELET_H__
#include "ifftw.h"
/**************************************************************
* types of codelets
**************************************************************/
/* FOOab, with a,b in {0,1}, denotes the FOO transform
where a/b say whether the input/output are shifted by
half a sample/slot. */
typedef enum {
R2HC00, R2HC01, R2HC10, R2HC11,
HC2R00, HC2R01, HC2R10, HC2R11,
DHT,
REDFT00, REDFT01, REDFT10, REDFT11, /* real-even == DCT's */
RODFT00, RODFT01, RODFT10, RODFT11 /* real-odd == DST's */
} rdft_kind;
/* standard R2HC/HC2R transforms are unshifted */
#define R2HC R2HC00
#define HC2R HC2R00
#define R2HCII R2HC01
#define HC2RIII HC2R10
/* (k) >= R2HC00 produces a warning under gcc because checking x >= 0
is superfluous for unsigned values...but it is needed because other
compilers (e.g. icc) may define the enum to be a signed int...grrr. */
#define R2HC_KINDP(k) ((k) >= R2HC00 && (k) <= R2HC11) /* uses kr2hc_genus */
#define HC2R_KINDP(k) ((k) >= HC2R00 && (k) <= HC2R11) /* uses khc2r_genus */
#define R2R_KINDP(k) ((k) >= DHT) /* uses kr2r_genus */
#define REDFT_KINDP(k) ((k) >= REDFT00 && (k) <= REDFT11)
#define RODFT_KINDP(k) ((k) >= RODFT00 && (k) <= RODFT11)
#define REODFT_KINDP(k) ((k) >= REDFT00 && (k) <= RODFT11)
/* real-input DFT codelets */
typedef struct kr2hc_desc_s kr2hc_desc;
typedef struct {
int (*okp)(
const kr2hc_desc *desc,
const R *I, const R *ro, const R *io,
int is, int ios, int ros, int vl, int ivs, int ovs);
rdft_kind kind;
int vl;
} kr2hc_genus;
struct kr2hc_desc_s {
int sz; /* size of transform computed */
const char *nam;
opcnt ops;
const kr2hc_genus *genus;
int is;
int ros, ios;
int ivs;
int ovs;
};
typedef void (*kr2hc) (const R *I, R *ro, R *io, stride is,
stride ros, stride ios, int vl, int ivs, int ovs);
void X(kr2hc_register)(planner *p, kr2hc codelet, const kr2hc_desc *desc);
/* real-input DFT codelets, type II (middle case of hc2hc DIT) */
typedef kr2hc_desc kr2hcII_desc;
typedef kr2hc_genus kr2hcII_genus;
typedef kr2hc kr2hcII;
#define kr2hcII_register kr2hc_register
/* half-complex to half-complex DIT/DIF codelets: */
typedef struct hc2hc_desc_s hc2hc_desc;
typedef struct {
int (*okp)(
const struct hc2hc_desc_s *desc,
const R *rio, const R *iio, int ios, int vs, int m, int dist);
rdft_kind kind;
int vl;
} hc2hc_genus;
struct hc2hc_desc_s {
int radix;
const char *nam;
const tw_instr *tw;
opcnt ops;
const hc2hc_genus *genus;
int s1;
int s2;
int dist;
};
typedef const R *(*khc2hc) (R *rioarray, R *iioarray, const R *W,
stride ios, int m, int dist);
void X(khc2hc_dit_register)(planner *p, khc2hc codelet, const hc2hc_desc *desc);
extern const solvtab X(solvtab_rdft_r2hc);
/* real-output DFT codelets */
typedef struct khc2r_desc_s khc2r_desc;
typedef struct {
int (*okp)(
const khc2r_desc *desc,
const R *ri, const R *ii, const R *O,
int ris, int iis, int os, int vl, int ivs, int ovs);
rdft_kind kind;
int vl;
} khc2r_genus;
struct khc2r_desc_s {
int sz; /* size of transform computed */
const char *nam;
opcnt ops;
const khc2r_genus *genus;
int ris, iis;
int os;
int ivs;
int ovs;
};
typedef void (*khc2r) (const R *ri, const R *ii, R *O, stride ris,
stride iis, stride os, int vl, int ivs, int ovs);
void X(khc2r_register)(planner *p, khc2r codelet, const khc2r_desc *desc);
/* real-output DFT codelets, type III (middle case of hc2hc DIF) */
typedef khc2r_desc khc2rIII_desc;
typedef khc2r_genus khc2rIII_genus;
typedef khc2r khc2rIII;
#define khc2rIII_register khc2r_register
void X(khc2hc_dif_register)(planner *p, khc2hc codelet, const hc2hc_desc *desc);
extern const solvtab X(solvtab_rdft_hc2r);
/* real-input & output DFT-like codelets (DHT, etc.) */
typedef struct kr2r_desc_s kr2r_desc;
typedef struct {
int (*okp)(
const kr2r_desc *desc,
const R *I, const R *O,
int is, int os, int vl, int ivs, int ovs);
int vl;
} kr2r_genus;
struct kr2r_desc_s {
int sz; /* size of transform computed */
const char *nam;
opcnt ops;
const kr2r_genus *genus;
rdft_kind kind;
int is, os;
int ivs;
int ovs;
};
typedef void (*kr2r) (const R *I, R *O, stride is, stride os,
int vl, int ivs, int ovs);
void X(kr2r_register)(planner *p, kr2r codelet, const kr2r_desc *desc);
extern const solvtab X(solvtab_rdft_r2r);
#endif /* __RDFT_CODELET_H__ */
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