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ffmpeg/libavcodec/alpha/motion_est_alpha.c

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/*
* Alpha optimized DSP utils
* Copyright (c) 2002 Falk Hueffner <falk@debian.org>
*
* This 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 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "asm.h"
#include "../dsputil.h"
void get_pixels_mvi(DCTELEM *restrict block,
const uint8_t *restrict pixels, int line_size)
{
int h = 8;
do {
uint64_t p;
p = ldq(pixels);
stq(unpkbw(p), block);
stq(unpkbw(p >> 32), block + 4);
pixels += line_size;
block += 8;
} while (--h);
}
void diff_pixels_mvi(DCTELEM *block, const uint8_t *s1, const uint8_t *s2,
int stride) {
int h = 8;
uint64_t mask = 0x4040;
mask |= mask << 16;
mask |= mask << 32;
do {
uint64_t x, y, c, d, a;
uint64_t signs;
x = ldq(s1);
y = ldq(s2);
c = cmpbge(x, y);
d = x - y;
a = zap(mask, c); /* We use 0x4040404040404040 here... */
d += 4 * a; /* ...so we can use s4addq here. */
signs = zap(-1, c);
stq(unpkbw(d) | (unpkbw(signs) << 8), block);
stq(unpkbw(d >> 32) | (unpkbw(signs >> 32) << 8), block + 4);
s1 += stride;
s2 += stride;
block += 8;
} while (--h);
}
static inline uint64_t avg2(uint64_t a, uint64_t b)
{
return (a | b) - (((a ^ b) & BYTE_VEC(0xfe)) >> 1);
}
static inline uint64_t avg4(uint64_t l1, uint64_t l2, uint64_t l3, uint64_t l4)
{
uint64_t r1 = ((l1 & ~BYTE_VEC(0x03)) >> 2)
+ ((l2 & ~BYTE_VEC(0x03)) >> 2)
+ ((l3 & ~BYTE_VEC(0x03)) >> 2)
+ ((l4 & ~BYTE_VEC(0x03)) >> 2);
uint64_t r2 = (( (l1 & BYTE_VEC(0x03))
+ (l2 & BYTE_VEC(0x03))
+ (l3 & BYTE_VEC(0x03))
+ (l4 & BYTE_VEC(0x03))
+ BYTE_VEC(0x02)) >> 2) & BYTE_VEC(0x03);
return r1 + r2;
}
int pix_abs8x8_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
{
int result = 0;
if ((size_t) pix2 & 0x7) {
/* works only when pix2 is actually unaligned */
do { /* do 8 pixel a time */
uint64_t p1, p2;
p1 = ldq(pix1);
p2 = uldq(pix2);
result += perr(p1, p2);
pix1 += line_size;
pix2 += line_size;
} while (--h);
} else {
do {
uint64_t p1, p2;
p1 = ldq(pix1);
p2 = ldq(pix2);
result += perr(p1, p2);
pix1 += line_size;
pix2 += line_size;
} while (--h);
}
return result;
}
#if 0 /* now done in assembly */
int pix_abs16x16_mvi(uint8_t *pix1, uint8_t *pix2, int line_size)
{
int result = 0;
int h = 16;
if ((size_t) pix2 & 0x7) {
/* works only when pix2 is actually unaligned */
do { /* do 16 pixel a time */
uint64_t p1_l, p1_r, p2_l, p2_r;
uint64_t t;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
t = ldq_u(pix2 + 8);
p2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2);
p2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2);
pix1 += line_size;
pix2 += line_size;
result += perr(p1_l, p2_l)
+ perr(p1_r, p2_r);
} while (--h);
} else {
do {
uint64_t p1_l, p1_r, p2_l, p2_r;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
p2_l = ldq(pix2);
p2_r = ldq(pix2 + 8);
pix1 += line_size;
pix2 += line_size;
result += perr(p1_l, p2_l)
+ perr(p1_r, p2_r);
} while (--h);
}
return result;
}
#endif
int pix_abs16x16_x2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
{
int result = 0;
uint64_t disalign = (size_t) pix2 & 0x7;
switch (disalign) {
case 0:
do {
uint64_t p1_l, p1_r, p2_l, p2_r;
uint64_t l, r;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
l = ldq(pix2);
r = ldq(pix2 + 8);
p2_l = avg2(l, (l >> 8) | ((uint64_t) r << 56));
p2_r = avg2(r, (r >> 8) | ((uint64_t) pix2[16] << 56));
pix1 += line_size;
pix2 += line_size;
result += perr(p1_l, p2_l)
+ perr(p1_r, p2_r);
} while (--h);
break;
case 7:
/* |.......l|lllllllr|rrrrrrr*|
This case is special because disalign1 would be 8, which
gets treated as 0 by extqh. At least it is a bit faster
that way :) */
do {
uint64_t p1_l, p1_r, p2_l, p2_r;
uint64_t l, m, r;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
l = ldq_u(pix2);
m = ldq_u(pix2 + 8);
r = ldq_u(pix2 + 16);
p2_l = avg2(extql(l, disalign) | extqh(m, disalign), m);
p2_r = avg2(extql(m, disalign) | extqh(r, disalign), r);
pix1 += line_size;
pix2 += line_size;
result += perr(p1_l, p2_l)
+ perr(p1_r, p2_r);
} while (--h);
break;
default:
do {
uint64_t disalign1 = disalign + 1;
uint64_t p1_l, p1_r, p2_l, p2_r;
uint64_t l, m, r;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
l = ldq_u(pix2);
m = ldq_u(pix2 + 8);
r = ldq_u(pix2 + 16);
p2_l = avg2(extql(l, disalign) | extqh(m, disalign),
extql(l, disalign1) | extqh(m, disalign1));
p2_r = avg2(extql(m, disalign) | extqh(r, disalign),
extql(m, disalign1) | extqh(r, disalign1));
pix1 += line_size;
pix2 += line_size;
result += perr(p1_l, p2_l)
+ perr(p1_r, p2_r);
} while (--h);
break;
}
return result;
}
int pix_abs16x16_y2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
{
int result = 0;
if ((size_t) pix2 & 0x7) {
uint64_t t, p2_l, p2_r;
t = ldq_u(pix2 + 8);
p2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2);
p2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2);
do {
uint64_t p1_l, p1_r, np2_l, np2_r;
uint64_t t;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
pix2 += line_size;
t = ldq_u(pix2 + 8);
np2_l = extql(ldq_u(pix2), pix2) | extqh(t, pix2);
np2_r = extql(t, pix2) | extqh(ldq_u(pix2 + 16), pix2);
result += perr(p1_l, avg2(p2_l, np2_l))
+ perr(p1_r, avg2(p2_r, np2_r));
pix1 += line_size;
p2_l = np2_l;
p2_r = np2_r;
} while (--h);
} else {
uint64_t p2_l, p2_r;
p2_l = ldq(pix2);
p2_r = ldq(pix2 + 8);
do {
uint64_t p1_l, p1_r, np2_l, np2_r;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
pix2 += line_size;
np2_l = ldq(pix2);
np2_r = ldq(pix2 + 8);
result += perr(p1_l, avg2(p2_l, np2_l))
+ perr(p1_r, avg2(p2_r, np2_r));
pix1 += line_size;
p2_l = np2_l;
p2_r = np2_r;
} while (--h);
}
return result;
}
int pix_abs16x16_xy2_mvi(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
{
int result = 0;
uint64_t p1_l, p1_r;
uint64_t p2_l, p2_r, p2_x;
p1_l = ldq(pix1);
p1_r = ldq(pix1 + 8);
if ((size_t) pix2 & 0x7) { /* could be optimized a lot */
p2_l = uldq(pix2);
p2_r = uldq(pix2 + 8);
p2_x = (uint64_t) pix2[16] << 56;
} else {
p2_l = ldq(pix2);
p2_r = ldq(pix2 + 8);
p2_x = ldq(pix2 + 16) << 56;
}
do {
uint64_t np1_l, np1_r;
uint64_t np2_l, np2_r, np2_x;
pix1 += line_size;
pix2 += line_size;
np1_l = ldq(pix1);
np1_r = ldq(pix1 + 8);
if ((size_t) pix2 & 0x7) { /* could be optimized a lot */
np2_l = uldq(pix2);
np2_r = uldq(pix2 + 8);
np2_x = (uint64_t) pix2[16] << 56;
} else {
np2_l = ldq(pix2);
np2_r = ldq(pix2 + 8);
np2_x = ldq(pix2 + 16) << 56;
}
result += perr(p1_l,
avg4( p2_l, ( p2_l >> 8) | ((uint64_t) p2_r << 56),
np2_l, (np2_l >> 8) | ((uint64_t) np2_r << 56)))
+ perr(p1_r,
avg4( p2_r, ( p2_r >> 8) | ((uint64_t) p2_x),
np2_r, (np2_r >> 8) | ((uint64_t) np2_x)));
p1_l = np1_l;
p1_r = np1_r;
p2_l = np2_l;
p2_r = np2_r;
p2_x = np2_x;
} while (--h);
return result;
}
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