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/*
* MMX optimized motion estimation
* Copyright (c) 2001 Gerard Lantau.
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include "../dsputil.h"
#include "mmx.h"
static const unsigned long long int mm_wone __attribute__ ((aligned(8))) = 0x0001000100010001;
static const unsigned long long int mm_wtwo __attribute__ ((aligned(8))) = 0x0002000200020002;
/* mm7 is accumulator, mm6 is zero */
static inline void sad_add(const UINT8 *p1, const UINT8 *p2)
{
movq_m2r(*p1, mm0);
movq_m2r(*p2, mm1);
movq_r2r(mm0, mm2);
psubusb_r2r(mm1, mm0);
psubusb_r2r(mm2, mm1);
por_r2r(mm1, mm0); /* mm0 is absolute value */
movq_r2r(mm0, mm1);
punpcklbw_r2r(mm6, mm0);
punpckhbw_r2r(mm6, mm1);
paddusw_r2r(mm0, mm7);
paddusw_r2r(mm1, mm7);
}
/* convert mm7 to value */
static inline int sad_end(void)
{
int res;
movq_r2r(mm7, mm0);
psrlq_i2r(32, mm7);
paddusw_r2r(mm0, mm7);
movq_r2r(mm7, mm0);
psrlq_i2r(16, mm7);
paddusw_r2r(mm0, mm7);
__asm __volatile ("movd %%mm7, %0" : "=a" (res));
return res & 0xffff;
}
int pix_abs16x16_mmx(UINT8 *blk1, UINT8 *blk2, int lx, int h)
{
const UINT8 *p1, *p2;
h >>= 1;
p1 = blk1;
p2 = blk2;
pxor_r2r(mm7, mm7); /* mm7 is accumulator */
pxor_r2r(mm6, mm6); /* mm7 is zero constant */
do {
sad_add(p1, p2);
sad_add(p1 + 8, p2 + 8);
p1 += lx;
p2 += lx;
sad_add(p1, p2);
sad_add(p1 + 8, p2 + 8);
p1 += lx;
p2 += lx;
} while (--h);
return sad_end();
}
/* please test it ! */
static inline void sad_add_sse(const UINT8 *p1, const UINT8 *p2)
{
movq_m2r(*(p1 + 0), mm0);
movq_m2r(*(p1 + 8), mm1);
psadbw_m2r(*(p2 + 0), mm0);
psadbw_m2r(*(p2 + 8), mm1);
paddusw_r2r(mm0, mm7);
paddusw_r2r(mm1, mm7);
}
int pix_abs16x16_sse(UINT8 *blk1, UINT8 *blk2, int lx, int h)
{
const UINT8 *p1, *p2;
h >>= 1;
p1 = blk1;
p2 = blk2;
pxor_r2r(mm7, mm7); /* mm7 is accumulator */
do {
sad_add_sse(p1, p2);
p1 += lx;
p2 += lx;
sad_add_sse(p1, p2);
p1 += lx;
p2 += lx;
} while (--h);
return sad_end();
}
#define DUMP(reg) { mmx_t tmp; movq_r2m(reg, tmp); printf(#reg "=%016Lx\n", tmp.uq); }
/* mm7 is accumulator, mm6 is zero */
static inline void sad_add_x2(const UINT8 *p1, const UINT8 *p2, const UINT8 *p3)
{
movq_m2r(*(p2 + 0), mm0);
movq_m2r(*(p3 + 0), mm1);
movq_r2r(mm0, mm2);
movq_r2r(mm1, mm3);
punpcklbw_r2r(mm6, mm0); /* extract 4 bytes low */
punpcklbw_r2r(mm6, mm1);
punpckhbw_r2r(mm6, mm2); /* high */
punpckhbw_r2r(mm6, mm3);
paddusw_r2r(mm1, mm0);
paddusw_r2r(mm3, mm2);
movq_m2r(*(p1 + 0), mm1); /* mm1 : other value */
paddusw_r2r(mm5, mm0); /* + 1 */
paddusw_r2r(mm5, mm2); /* + 1 */
psrlw_i2r(1, mm0);
psrlw_i2r(1, mm2);
packuswb_r2r(mm2, mm0); /* average is in mm0 */
movq_r2r(mm1, mm2);
psubusb_r2r(mm0, mm1);
psubusb_r2r(mm2, mm0);
por_r2r(mm1, mm0); /* mm0 is absolute value */
movq_r2r(mm0, mm1);
punpcklbw_r2r(mm6, mm0);
punpckhbw_r2r(mm6, mm1);
paddusw_r2r(mm0, mm7);
paddusw_r2r(mm1, mm7);
}
int pix_abs16x16_x2_mmx(UINT8 *blk1, UINT8 *blk2, int lx, int h)
{
const UINT8 *p1, *p2;
p1 = blk1;
p2 = blk2;
pxor_r2r(mm7, mm7); /* mm7 is accumulator */
pxor_r2r(mm6, mm6); /* mm7 is zero constant */
movq_m2r(mm_wone, mm5); /* one constant */
do {
sad_add_x2(p1, p2, p2 + 1);
sad_add_x2(p1 + 8, p2 + 8, p2 + 9);
p1 += lx;
p2 += lx;
} while (--h);
return sad_end();
}
int pix_abs16x16_y2_mmx(UINT8 *blk1, UINT8 *blk2, int lx, int h)
{
const UINT8 *p1, *p2;
p1 = blk1;
p2 = blk2;
pxor_r2r(mm7, mm7); /* mm7 is accumulator */
pxor_r2r(mm6, mm6); /* mm7 is zero constant */
movq_m2r(mm_wone, mm5); /* one constant */
do {
sad_add_x2(p1, p2, p2 + lx);
sad_add_x2(p1 + 8, p2 + 8, p2 + 8 + lx);
p1 += lx;
p2 += lx;
} while (--h);
return sad_end();
}
/* mm7 is accumulator, mm6 is zero */
static inline void sad_add_xy2(const UINT8 *p1, const UINT8 *p2, const UINT8 *p3)
{
movq_m2r(*(p2 + 0), mm0);
movq_m2r(*(p3 + 0), mm1);
movq_r2r(mm0, mm2);
movq_r2r(mm1, mm3);
punpcklbw_r2r(mm6, mm0); /* extract 4 bytes low */
punpcklbw_r2r(mm6, mm1);
punpckhbw_r2r(mm6, mm2); /* high */
punpckhbw_r2r(mm6, mm3);
paddusw_r2r(mm1, mm0);
paddusw_r2r(mm3, mm2);
movq_m2r(*(p2 + 1), mm1);
movq_m2r(*(p3 + 1), mm3);
movq_r2r(mm1, mm4);
punpcklbw_r2r(mm6, mm1); /* low */
punpckhbw_r2r(mm6, mm4); /* high */
paddusw_r2r(mm1, mm0);
paddusw_r2r(mm4, mm2);
movq_r2r(mm3, mm4);
punpcklbw_r2r(mm6, mm3); /* low */
punpckhbw_r2r(mm6, mm4); /* high */
paddusw_r2r(mm3, mm0);
paddusw_r2r(mm4, mm2);
movq_m2r(*(p1 + 0), mm1); /* mm1 : other value */
paddusw_r2r(mm5, mm0); /* + 2 */
paddusw_r2r(mm5, mm2); /* + 2 */
psrlw_i2r(2, mm0);
psrlw_i2r(2, mm2);
packuswb_r2r(mm2, mm0); /* average is in mm0 */
movq_r2r(mm1, mm2);
psubusb_r2r(mm0, mm1);
psubusb_r2r(mm2, mm0);
por_r2r(mm1, mm0); /* mm0 is absolute value */
movq_r2r(mm0, mm1);
punpcklbw_r2r(mm6, mm0);
punpckhbw_r2r(mm6, mm1);
paddusw_r2r(mm0, mm7);
paddusw_r2r(mm1, mm7);
}
int pix_abs16x16_xy2_mmx(UINT8 *blk1, UINT8 *blk2, int lx, int h)
{
const UINT8 *p1, *p2, *p3;
p1 = blk1;
p2 = blk2;
p3 = blk2 + lx;
pxor_r2r(mm7, mm7); /* mm7 is accumulator */
pxor_r2r(mm6, mm6); /* mm7 is zero constant */
movq_m2r(mm_wtwo, mm5); /* one constant */
do {
sad_add_xy2(p1, p2, p2 + lx);
sad_add_xy2(p1 + 8, p2 + 8, p2 + 8 + lx);
p1 += lx;
p2 += lx;
} while (--h);
return sad_end();
}
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