view Lib/fftw-3.2.1/kernel/cpy2d.c @ 1:e86e9c111b29

Updates stuff that potentially fixes the memory leak and also makes it work on Windows and Linux (Need to test). Still have to fix fftw include for linux in Jucer.

/*
 * Copyright (c) 2003, 2007-8 Matteo Frigo
 * Copyright (c) 2003, 2007-8 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
 *
 */

/* out of place 2D copy routines */
#include "ifftw.h"

void X(cpy2d)(R *I, R *O,
	      INT n0, INT is0, INT os0,
	      INT n1, INT is1, INT os1, 
	      INT vl)
{
     INT i0, i1, v;

     switch (vl) {
	 case 1:
	      for (i1 = 0; i1 < n1; ++i1)
		   for (i0 = 0; i0 < n0; ++i0) {
			R x0 = I[i0 * is0 + i1 * is1];
			O[i0 * os0 + i1 * os1] = x0;
		   }
	      break;
	 case 2:
	      for (i1 = 0; i1 < n1; ++i1)
		   for (i0 = 0; i0 < n0; ++i0) {
			R x0 = I[i0 * is0 + i1 * is1];
			R x1 = I[i0 * is0 + i1 * is1 + 1];
			O[i0 * os0 + i1 * os1] = x0;
			O[i0 * os0 + i1 * os1 + 1] = x1;
		   }
	      break;
	 default:
	      for (i1 = 0; i1 < n1; ++i1)
		   for (i0 = 0; i0 < n0; ++i0)
			for (v = 0; v < vl; ++v) {
			     R x0 = I[i0 * is0 + i1 * is1 + v];
			     O[i0 * os0 + i1 * os1 + v] = x0;
			}
	      break;
     }
}

/* like cpy2d, but read input contiguously if possible */
void X(cpy2d_ci)(R *I, R *O,
		 INT n0, INT is0, INT os0,
		 INT n1, INT is1, INT os1, 
		 INT vl)
{
     if (IABS(is0) < IABS(is1))	/* inner loop is for n0 */
	  X(cpy2d) (I, O, n0, is0, os0, n1, is1, os1, vl);
     else
	  X(cpy2d) (I, O, n1, is1, os1, n0, is0, os0, vl);
}

/* like cpy2d, but write output contiguously if possible */
void X(cpy2d_co)(R *I, R *O,
		 INT n0, INT is0, INT os0,
		 INT n1, INT is1, INT os1, 
		 INT vl)
{
     if (IABS(os0) < IABS(os1))	/* inner loop is for n0 */
	  X(cpy2d) (I, O, n0, is0, os0, n1, is1, os1, vl);
     else
	  X(cpy2d) (I, O, n1, is1, os1, n0, is0, os0, vl);
}


/* tiled copy routines */
struct cpy2d_closure {
     R *I, *O;
     INT is0, os0, is1, os1, vl;
     R *buf; 
};

static void dotile(INT n0l, INT n0u, INT n1l, INT n1u, void *args)
{
     struct cpy2d_closure *k = (struct cpy2d_closure *)args;
     X(cpy2d)(k->I + n0l * k->is0 + n1l * k->is1,
	      k->O + n0l * k->os0 + n1l * k->os1,
	      n0u - n0l, k->is0, k->os0,
	      n1u - n1l, k->is1, k->os1,
	      k->vl);
}

static void dotile_buf(INT n0l, INT n0u, INT n1l, INT n1u, void *args)
{
     struct cpy2d_closure *k = (struct cpy2d_closure *)args;

     /* copy from I to buf */
     X(cpy2d_ci)(k->I + n0l * k->is0 + n1l * k->is1,
		 k->buf,
		 n0u - n0l, k->is0, k->vl,
		 n1u - n1l, k->is1, k->vl * (n0u - n0l),
		 k->vl);

     /* copy from buf to O */
     X(cpy2d_co)(k->buf,
		 k->O + n0l * k->os0 + n1l * k->os1,		 
		 n0u - n0l, k->vl, k->os0,
		 n1u - n1l, k->vl * (n0u - n0l), k->os1,
		 k->vl);
}


void X(cpy2d_tiled)(R *I, R *O,
		    INT n0, INT is0, INT os0,
		    INT n1, INT is1, INT os1, INT vl) 
{
     INT tilesz = X(compute_tilesz)(vl, 
				    1 /* input array */
				    + 1 /* ouput array */);
     struct cpy2d_closure k;
     k.I = I;
     k.O = O;
     k.is0 = is0;
     k.os0 = os0;
     k.is1 = is1;
     k.os1 = os1;
     k.vl = vl;
     k.buf = 0; /* unused */
     X(tile2d)(0, n0, 0, n1, tilesz, dotile, &k);
}

void X(cpy2d_tiledbuf)(R *I, R *O,
		       INT n0, INT is0, INT os0,
		       INT n1, INT is1, INT os1, INT vl) 
{
     R buf[CACHESIZE / (2 * sizeof(R))];
     /* input and buffer in cache, or
	output and buffer in cache */
     INT tilesz = X(compute_tilesz)(vl, 2);
     struct cpy2d_closure k;
     k.I = I;
     k.O = O;
     k.is0 = is0;
     k.os0 = os0;
     k.is1 = is1;
     k.os1 = os1;
     k.vl = vl;
     k.buf = buf;
     A(tilesz * tilesz * vl * sizeof(R) <= sizeof(buf));
     X(tile2d)(0, n0, 0, n1, tilesz, dotile_buf, &k);
}