motion_est_alpha.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:10k
源码类别:
Windows CE
开发平台:
C/C++
- /*
- * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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;
- }