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/*
pygame - Python Game Library
Copyright (C) 2000-2001 Pete Shinners
Copyright (C) 2007 Rene Dudfield, Richard Goedeken
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Pete Shinners
pete@shinners.org
*/
/* Pentium 64 bit SSE/MMX smoothscale routines
* These are written for compilation with MSVC only.
*
* This file should not depend on anything but the C standard library.
*/
#include <stdint.h>
typedef uint8_t Uint8; /* SDL convention */
typedef uint16_t Uint16; /* SDL convention */
#include <stdlib.h>
#include <memory.h>
#include "scale.h"
/* These functions implement an area-averaging shrinking filter in the Y-dimension.
*/
void
filter_shrink_Y_MMX(Uint8 *srcpix, Uint8 *dstpix, int width, int srcpitch, int dstpitch, int srcheight, int dstheight)
{
Uint16 *templine;
/* allocate and clear a memory area for storing the accumulator line */
templine = (Uint16 *) malloc(dstpitch * 2);
if (templine == 0) return;
memset(templine, 0, dstpitch * 2);
filter_shrink_Y_MMX_gcc(srcpix, dstpix, templine, width, srcpitch, dstpitch, srcheight, dstheight);
/* free the temporary memory */
free(templine);
}
void
filter_shrink_Y_SSE(Uint8 *srcpix, Uint8 *dstpix, int width, int srcpitch, int dstpitch, int srcheight, int dstheight)
{
Uint16 *templine;
/* allocate and clear a memory area for storing the accumulator line */
templine = (Uint16 *) malloc(dstpitch * 2);
if (templine == 0) return;
memset(templine, 0, dstpitch * 2);
filter_shrink_Y_SSE_gcc(srcpix, dstpix, templine, width, srcpitch, dstpitch, srcheight, dstheight);
/* free the temporary memory */
free(templine);
}
/* These functions implement a bilinear filter in the X-dimension.
*/
void
filter_expand_X_MMX(Uint8 *srcpix, Uint8 *dstpix, int height, int srcpitch, int dstpitch, int srcwidth, int dstwidth)
{
int *xidx0, *xmult0, *xmult1;
int factorwidth = 8;
/* Allocate memory for factors */
xidx0 = malloc(dstwidth * 4);
if (xidx0 == 0) return;
xmult0 = (int *) malloc(dstwidth * factorwidth);
xmult1 = (int *) malloc(dstwidth * factorwidth);
if (xmult0 == 0 || xmult1 == 0)
{
free(xidx0);
if (xmult0) free(xmult0);
if (xmult1) free(xmult1);
}
filter_expand_X_MMX_gcc(srcpix, dstpix, xidx0, xmult0, xmult1, height, srcpitch, dstpitch, srcwidth, dstwidth);
/* free memory */
free(xidx0);
free(xmult0);
free(xmult1);
}
void
filter_expand_X_SSE(Uint8 *srcpix, Uint8 *dstpix, int height, int srcpitch, int dstpitch, int srcwidth, int dstwidth)
{
int *xidx0, *xmult0, *xmult1;
int factorwidth = 8;
/* Allocate memory for factors */
xidx0 = malloc(dstwidth * 4);
if (xidx0 == 0) return;
xmult0 = (int *) malloc(dstwidth * factorwidth);
xmult1 = (int *) malloc(dstwidth * factorwidth);
if (xmult0 == 0 || xmult1 == 0)
{
free(xidx0);
if (xmult0) free(xmult0);
if (xmult1) free(xmult1);
}
filter_expand_X_SSE_gcc(srcpix, dstpix, xidx0, xmult0, xmult1, height, srcpitch, dstpitch, srcwidth, dstwidth);
/* free memory */
free(xidx0);
free(xmult0);
free(xmult1);
}
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