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/*
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 * Copyright (c) 2002 Brian Foley
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 * Copyright (c) 2002 Dieter Shirley
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 * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "config.h"
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#if HAVE_ALTIVEC_H
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#include <altivec.h>
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#endif
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#include "libavcodec/dsputil.h"
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#include "dsputil_ppc.h"
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#include "util_altivec.h"
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#include "types_altivec.h"
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int sad16_x2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
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{
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    int i;
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    DECLARE_ALIGNED_16(int, s);
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    const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);
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    vector unsigned char *tv;
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    vector unsigned char pix1v, pix2v, pix2iv, avgv, t5;
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    vector unsigned int sad;
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    vector signed int sumdiffs;
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    s = 0;
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    sad = (vector unsigned int)vec_splat_u32(0);
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    for (i = 0; i < h; i++) {
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        /* Read unaligned pixels into our vectors. The vectors are as follows:
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           pix1v: pix1[0]-pix1[15]
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           pix2v: pix2[0]-pix2[15]      pix2iv: pix2[1]-pix2[16] */
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        tv = (vector unsigned char *) pix1;
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        pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));
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        tv = (vector unsigned char *) &pix2[0];
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        pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));
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        tv = (vector unsigned char *) &pix2[1];
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        pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1]));
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        /* Calculate the average vector */
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        avgv = vec_avg(pix2v, pix2iv);
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        /* Calculate a sum of abs differences vector */
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        t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
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        /* Add each 4 pixel group together and put 4 results into sad */
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        sad = vec_sum4s(t5, sad);
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        pix1 += line_size;
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        pix2 += line_size;
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    }
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    /* Sum up the four partial sums, and put the result into s */
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    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
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    sumdiffs = vec_splat(sumdiffs, 3);
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    vec_ste(sumdiffs, 0, &s);
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    return s;
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}
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int sad16_y2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
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{
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    int i;
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    DECLARE_ALIGNED_16(int, s);
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    const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);
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    vector unsigned char *tv;
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    vector unsigned char pix1v, pix2v, pix3v, avgv, t5;
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    vector unsigned int sad;
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    vector signed int sumdiffs;
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    uint8_t *pix3 = pix2 + line_size;
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    s = 0;
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    sad = (vector unsigned int)vec_splat_u32(0);
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    /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one
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       iteration becomes pix2 in the next iteration. We can use this
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       fact to avoid a potentially expensive unaligned read, each
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       time around the loop.
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       Read unaligned pixels into our vectors. The vectors are as follows:
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       pix2v: pix2[0]-pix2[15]
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       Split the pixel vectors into shorts */
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    tv = (vector unsigned char *) &pix2[0];
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    pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));
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    for (i = 0; i < h; i++) {
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        /* Read unaligned pixels into our vectors. The vectors are as follows:
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           pix1v: pix1[0]-pix1[15]
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           pix3v: pix3[0]-pix3[15] */
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        tv = (vector unsigned char *) pix1;
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        pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));
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        tv = (vector unsigned char *) &pix3[0];
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        pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0]));
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        /* Calculate the average vector */
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        avgv = vec_avg(pix2v, pix3v);
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        /* Calculate a sum of abs differences vector */
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        t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
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        /* Add each 4 pixel group together and put 4 results into sad */
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        sad = vec_sum4s(t5, sad);
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        pix1 += line_size;
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        pix2v = pix3v;
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        pix3 += line_size;
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    }
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    /* Sum up the four partial sums, and put the result into s */
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    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
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    sumdiffs = vec_splat(sumdiffs, 3);
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    vec_ste(sumdiffs, 0, &s);
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    return s;
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}
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int sad16_xy2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
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{
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    int i;
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    DECLARE_ALIGNED_16(int, s);
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    uint8_t *pix3 = pix2 + line_size;
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    const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);
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    const vector unsigned short two = (const vector unsigned short)vec_splat_u16(2);
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    vector unsigned char *tv, avgv, t5;
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    vector unsigned char pix1v, pix2v, pix3v, pix2iv, pix3iv;
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    vector unsigned short pix2lv, pix2hv, pix2ilv, pix2ihv;
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    vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv;
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    vector unsigned short avghv, avglv;
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    vector unsigned short t1, t2, t3, t4;
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    vector unsigned int sad;
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    vector signed int sumdiffs;
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    sad = (vector unsigned int)vec_splat_u32(0);
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    s = 0;
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    /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one
154
       iteration becomes pix2 in the next iteration. We can use this
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       fact to avoid a potentially expensive unaligned read, as well
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       as some splitting, and vector addition each time around the loop.
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       Read unaligned pixels into our vectors. The vectors are as follows:
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       pix2v: pix2[0]-pix2[15]  pix2iv: pix2[1]-pix2[16]
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       Split the pixel vectors into shorts */
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    tv = (vector unsigned char *) &pix2[0];
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    pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));
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    tv = (vector unsigned char *) &pix2[1];
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    pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1]));
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    pix2hv  = (vector unsigned short) vec_mergeh(zero, pix2v);
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    pix2lv  = (vector unsigned short) vec_mergel(zero, pix2v);
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    pix2ihv = (vector unsigned short) vec_mergeh(zero, pix2iv);
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    pix2ilv = (vector unsigned short) vec_mergel(zero, pix2iv);
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    t1 = vec_add(pix2hv, pix2ihv);
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    t2 = vec_add(pix2lv, pix2ilv);
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    for (i = 0; i < h; i++) {
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        /* Read unaligned pixels into our vectors. The vectors are as follows:
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           pix1v: pix1[0]-pix1[15]
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           pix3v: pix3[0]-pix3[15]      pix3iv: pix3[1]-pix3[16] */
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        tv = (vector unsigned char *) pix1;
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        pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));
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        tv = (vector unsigned char *) &pix3[0];
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        pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0]));
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        tv = (vector unsigned char *) &pix3[1];
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        pix3iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[1]));
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        /* Note that AltiVec does have vec_avg, but this works on vector pairs
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           and rounds up. We could do avg(avg(a,b),avg(c,d)), but the rounding
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           would mean that, for example, avg(3,0,0,1) = 2, when it should be 1.
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           Instead, we have to split the pixel vectors into vectors of shorts,
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           and do the averaging by hand. */
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        /* Split the pixel vectors into shorts */
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        pix3hv  = (vector unsigned short) vec_mergeh(zero, pix3v);
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        pix3lv  = (vector unsigned short) vec_mergel(zero, pix3v);
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        pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv);
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        pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv);
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        /* Do the averaging on them */
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        t3 = vec_add(pix3hv, pix3ihv);
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        t4 = vec_add(pix3lv, pix3ilv);
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        avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);
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        avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);
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        /* Pack the shorts back into a result */
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        avgv = vec_pack(avghv, avglv);
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        /* Calculate a sum of abs differences vector */
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        t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));
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        /* Add each 4 pixel group together and put 4 results into sad */
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        sad = vec_sum4s(t5, sad);
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        pix1 += line_size;
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        pix3 += line_size;
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        /* Transfer the calculated values for pix3 into pix2 */
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        t1 = t3;
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        t2 = t4;
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    }
220
    /* Sum up the four partial sums, and put the result into s */
221
    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
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    sumdiffs = vec_splat(sumdiffs, 3);
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    vec_ste(sumdiffs, 0, &s);
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225
    return s;
226
}
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228
int sad16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
229
{
230
    int i;
231
    DECLARE_ALIGNED_16(int, s);
232
    const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);
233
    vector unsigned char perm1, perm2, *pix1v, *pix2v;
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    vector unsigned char t1, t2, t3,t4, t5;
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    vector unsigned int sad;
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    vector signed int sumdiffs;
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    sad = (vector unsigned int)vec_splat_u32(0);
239

    
240

    
241
    for (i = 0; i < h; i++) {
242
        /* Read potentially unaligned pixels into t1 and t2 */
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        perm1 = vec_lvsl(0, pix1);
244
        pix1v = (vector unsigned char *) pix1;
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        perm2 = vec_lvsl(0, pix2);
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        pix2v = (vector unsigned char *) pix2;
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        t1 = vec_perm(pix1v[0], pix1v[1], perm1);
248
        t2 = vec_perm(pix2v[0], pix2v[1], perm2);
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250
        /* Calculate a sum of abs differences vector */
251
        t3 = vec_max(t1, t2);
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        t4 = vec_min(t1, t2);
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        t5 = vec_sub(t3, t4);
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255
        /* Add each 4 pixel group together and put 4 results into sad */
256
        sad = vec_sum4s(t5, sad);
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258
        pix1 += line_size;
259
        pix2 += line_size;
260
    }
261

    
262
    /* Sum up the four partial sums, and put the result into s */
263
    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
264
    sumdiffs = vec_splat(sumdiffs, 3);
265
    vec_ste(sumdiffs, 0, &s);
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    return s;
268
}
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int sad8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
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{
272
    int i;
273
    DECLARE_ALIGNED_16(int, s);
274
    const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);
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    vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;
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    vector unsigned char t1, t2, t3,t4, t5;
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    vector unsigned int sad;
278
    vector signed int sumdiffs;
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280
    sad = (vector unsigned int)vec_splat_u32(0);
281

    
282
    permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0};
283

    
284
    for (i = 0; i < h; i++) {
285
        /* Read potentially unaligned pixels into t1 and t2
286
           Since we're reading 16 pixels, and actually only want 8,
287
           mask out the last 8 pixels. The 0s don't change the sum. */
288
        perm1 = vec_lvsl(0, pix1);
289
        pix1v = (vector unsigned char *) pix1;
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        perm2 = vec_lvsl(0, pix2);
291
        pix2v = (vector unsigned char *) pix2;
292
        t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear);
293
        t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear);
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295
        /* Calculate a sum of abs differences vector */
296
        t3 = vec_max(t1, t2);
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        t4 = vec_min(t1, t2);
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        t5 = vec_sub(t3, t4);
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300
        /* Add each 4 pixel group together and put 4 results into sad */
301
        sad = vec_sum4s(t5, sad);
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303
        pix1 += line_size;
304
        pix2 += line_size;
305
    }
306

    
307
    /* Sum up the four partial sums, and put the result into s */
308
    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
309
    sumdiffs = vec_splat(sumdiffs, 3);
310
    vec_ste(sumdiffs, 0, &s);
311

    
312
    return s;
313
}
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int pix_norm1_altivec(uint8_t *pix, int line_size)
316
{
317
    int i;
318
    DECLARE_ALIGNED_16(int, s);
319
    const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);
320
    vector unsigned char *tv;
321
    vector unsigned char pixv;
322
    vector unsigned int sv;
323
    vector signed int sum;
324

    
325
    sv = (vector unsigned int)vec_splat_u32(0);
326

    
327
    s = 0;
328
    for (i = 0; i < 16; i++) {
329
        /* Read in the potentially unaligned pixels */
330
        tv = (vector unsigned char *) pix;
331
        pixv = vec_perm(tv[0], tv[1], vec_lvsl(0, pix));
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333
        /* Square the values, and add them to our sum */
334
        sv = vec_msum(pixv, pixv, sv);
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336
        pix += line_size;
337
    }
338
    /* Sum up the four partial sums, and put the result into s */
339
    sum = vec_sums((vector signed int) sv, (vector signed int) zero);
340
    sum = vec_splat(sum, 3);
341
    vec_ste(sum, 0, &s);
342

    
343
    return s;
344
}
345

    
346
/**
347
 * Sum of Squared Errors for a 8x8 block.
348
 * AltiVec-enhanced.
349
 * It's the sad8_altivec code above w/ squaring added.
350
 */
351
int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
352
{
353
    int i;
354
    DECLARE_ALIGNED_16(int, s);
355
    const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);
356
    vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;
357
    vector unsigned char t1, t2, t3,t4, t5;
358
    vector unsigned int sum;
359
    vector signed int sumsqr;
360

    
361
    sum = (vector unsigned int)vec_splat_u32(0);
362

    
363
    permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0};
364

    
365

    
366
    for (i = 0; i < h; i++) {
367
        /* Read potentially unaligned pixels into t1 and t2
368
           Since we're reading 16 pixels, and actually only want 8,
369
           mask out the last 8 pixels. The 0s don't change the sum. */
370
        perm1 = vec_lvsl(0, pix1);
371
        pix1v = (vector unsigned char *) pix1;
372
        perm2 = vec_lvsl(0, pix2);
373
        pix2v = (vector unsigned char *) pix2;
374
        t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear);
375
        t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear);
376

    
377
        /* Since we want to use unsigned chars, we can take advantage
378
           of the fact that abs(a-b)^2 = (a-b)^2. */
379

    
380
        /* Calculate abs differences vector */
381
        t3 = vec_max(t1, t2);
382
        t4 = vec_min(t1, t2);
383
        t5 = vec_sub(t3, t4);
384

    
385
        /* Square the values and add them to our sum */
386
        sum = vec_msum(t5, t5, sum);
387

    
388
        pix1 += line_size;
389
        pix2 += line_size;
390
    }
391

    
392
    /* Sum up the four partial sums, and put the result into s */
393
    sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
394
    sumsqr = vec_splat(sumsqr, 3);
395
    vec_ste(sumsqr, 0, &s);
396

    
397
    return s;
398
}
399

    
400
/**
401
 * Sum of Squared Errors for a 16x16 block.
402
 * AltiVec-enhanced.
403
 * It's the sad16_altivec code above w/ squaring added.
404
 */
405
int sse16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)
406
{
407
    int i;
408
    DECLARE_ALIGNED_16(int, s);
409
    const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);
410
    vector unsigned char perm1, perm2, *pix1v, *pix2v;
411
    vector unsigned char t1, t2, t3,t4, t5;
412
    vector unsigned int sum;
413
    vector signed int sumsqr;
414

    
415
    sum = (vector unsigned int)vec_splat_u32(0);
416

    
417
    for (i = 0; i < h; i++) {
418
        /* Read potentially unaligned pixels into t1 and t2 */
419
        perm1 = vec_lvsl(0, pix1);
420
        pix1v = (vector unsigned char *) pix1;
421
        perm2 = vec_lvsl(0, pix2);
422
        pix2v = (vector unsigned char *) pix2;
423
        t1 = vec_perm(pix1v[0], pix1v[1], perm1);
424
        t2 = vec_perm(pix2v[0], pix2v[1], perm2);
425

    
426
        /* Since we want to use unsigned chars, we can take advantage
427
           of the fact that abs(a-b)^2 = (a-b)^2. */
428

    
429
        /* Calculate abs differences vector */
430
        t3 = vec_max(t1, t2);
431
        t4 = vec_min(t1, t2);
432
        t5 = vec_sub(t3, t4);
433

    
434
        /* Square the values and add them to our sum */
435
        sum = vec_msum(t5, t5, sum);
436

    
437
        pix1 += line_size;
438
        pix2 += line_size;
439
    }
440

    
441
    /* Sum up the four partial sums, and put the result into s */
442
    sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);
443
    sumsqr = vec_splat(sumsqr, 3);
444
    vec_ste(sumsqr, 0, &s);
445

    
446
    return s;
447
}
448

    
449
int pix_sum_altivec(uint8_t * pix, int line_size)
450
{
451
    const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);
452
    vector unsigned char perm, *pixv;
453
    vector unsigned char t1;
454
    vector unsigned int sad;
455
    vector signed int sumdiffs;
456

    
457
    int i;
458
    DECLARE_ALIGNED_16(int, s);
459

    
460
    sad = (vector unsigned int)vec_splat_u32(0);
461

    
462
    for (i = 0; i < 16; i++) {
463
        /* Read the potentially unaligned 16 pixels into t1 */
464
        perm = vec_lvsl(0, pix);
465
        pixv = (vector unsigned char *) pix;
466
        t1 = vec_perm(pixv[0], pixv[1], perm);
467

    
468
        /* Add each 4 pixel group together and put 4 results into sad */
469
        sad = vec_sum4s(t1, sad);
470

    
471
        pix += line_size;
472
    }
473

    
474
    /* Sum up the four partial sums, and put the result into s */
475
    sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);
476
    sumdiffs = vec_splat(sumdiffs, 3);
477
    vec_ste(sumdiffs, 0, &s);
478

    
479
    return s;
480
}
481

    
482
void get_pixels_altivec(DCTELEM *restrict block, const uint8_t *pixels, int line_size)
483
{
484
    int i;
485
    vector unsigned char perm, bytes, *pixv;
486
    const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);
487
    vector signed short shorts;
488

    
489
    for (i = 0; i < 8; i++) {
490
        // Read potentially unaligned pixels.
491
        // We're reading 16 pixels, and actually only want 8,
492
        // but we simply ignore the extras.
493
        perm = vec_lvsl(0, pixels);
494
        pixv = (vector unsigned char *) pixels;
495
        bytes = vec_perm(pixv[0], pixv[1], perm);
496

    
497
        // convert the bytes into shorts
498
        shorts = (vector signed short)vec_mergeh(zero, bytes);
499

    
500
        // save the data to the block, we assume the block is 16-byte aligned
501
        vec_st(shorts, i*16, (vector signed short*)block);
502

    
503
        pixels += line_size;
504
    }
505
}
506

    
507
void diff_pixels_altivec(DCTELEM *restrict block, const uint8_t *s1,
508
        const uint8_t *s2, int stride)
509
{
510
    int i;
511
    vector unsigned char perm, bytes, *pixv;
512
    const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);
513
    vector signed short shorts1, shorts2;
514

    
515
    for (i = 0; i < 4; i++) {
516
        // Read potentially unaligned pixels
517
        // We're reading 16 pixels, and actually only want 8,
518
        // but we simply ignore the extras.
519
        perm = vec_lvsl(0, s1);
520
        pixv = (vector unsigned char *) s1;
521
        bytes = vec_perm(pixv[0], pixv[1], perm);
522

    
523
        // convert the bytes into shorts
524
        shorts1 = (vector signed short)vec_mergeh(zero, bytes);
525

    
526
        // Do the same for the second block of pixels
527
        perm = vec_lvsl(0, s2);
528
        pixv = (vector unsigned char *) s2;
529
        bytes = vec_perm(pixv[0], pixv[1], perm);
530

    
531
        // convert the bytes into shorts
532
        shorts2 = (vector signed short)vec_mergeh(zero, bytes);
533

    
534
        // Do the subtraction
535
        shorts1 = vec_sub(shorts1, shorts2);
536

    
537
        // save the data to the block, we assume the block is 16-byte aligned
538
        vec_st(shorts1, 0, (vector signed short*)block);
539

    
540
        s1 += stride;
541
        s2 += stride;
542
        block += 8;
543

    
544

    
545
        // The code below is a copy of the code above... This is a manual
546
        // unroll.
547

    
548
        // Read potentially unaligned pixels
549
        // We're reading 16 pixels, and actually only want 8,
550
        // but we simply ignore the extras.
551
        perm = vec_lvsl(0, s1);
552
        pixv = (vector unsigned char *) s1;
553
        bytes = vec_perm(pixv[0], pixv[1], perm);
554

    
555
        // convert the bytes into shorts
556
        shorts1 = (vector signed short)vec_mergeh(zero, bytes);
557

    
558
        // Do the same for the second block of pixels
559
        perm = vec_lvsl(0, s2);
560
        pixv = (vector unsigned char *) s2;
561
        bytes = vec_perm(pixv[0], pixv[1], perm);
562

    
563
        // convert the bytes into shorts
564
        shorts2 = (vector signed short)vec_mergeh(zero, bytes);
565

    
566
        // Do the subtraction
567
        shorts1 = vec_sub(shorts1, shorts2);
568

    
569
        // save the data to the block, we assume the block is 16-byte aligned
570
        vec_st(shorts1, 0, (vector signed short*)block);
571

    
572
        s1 += stride;
573
        s2 += stride;
574
        block += 8;
575
    }
576
}
577

    
578

    
579
static void clear_block_altivec(DCTELEM *block) {
580
    LOAD_ZERO;
581
    vec_st(zero_s16v,   0, block);
582
    vec_st(zero_s16v,  16, block);
583
    vec_st(zero_s16v,  32, block);
584
    vec_st(zero_s16v,  48, block);
585
    vec_st(zero_s16v,  64, block);
586
    vec_st(zero_s16v,  80, block);
587
    vec_st(zero_s16v,  96, block);
588
    vec_st(zero_s16v, 112, block);
589
}
590

    
591

    
592
void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) {
593
    register int i;
594
    register vector unsigned char vdst, vsrc;
595

    
596
    /* dst and src are 16 bytes-aligned (guaranteed) */
597
    for (i = 0 ; (i + 15) < w ; i+=16) {
598
        vdst = vec_ld(i, (unsigned char*)dst);
599
        vsrc = vec_ld(i, (unsigned char*)src);
600
        vdst = vec_add(vsrc, vdst);
601
        vec_st(vdst, i, (unsigned char*)dst);
602
    }
603
    /* if w is not a multiple of 16 */
604
    for (; (i < w) ; i++) {
605
        dst[i] = src[i];
606
    }
607
}
608

    
609
/* next one assumes that ((line_size % 16) == 0) */
610
void put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
611
{
612
POWERPC_PERF_DECLARE(altivec_put_pixels16_num, 1);
613
    register vector unsigned char pixelsv1, pixelsv2;
614
    register vector unsigned char pixelsv1B, pixelsv2B;
615
    register vector unsigned char pixelsv1C, pixelsv2C;
616
    register vector unsigned char pixelsv1D, pixelsv2D;
617

    
618
    register vector unsigned char perm = vec_lvsl(0, pixels);
619
    int i;
620
    register int line_size_2 = line_size << 1;
621
    register int line_size_3 = line_size + line_size_2;
622
    register int line_size_4 = line_size << 2;
623

    
624
POWERPC_PERF_START_COUNT(altivec_put_pixels16_num, 1);
625
// hand-unrolling the loop by 4 gains about 15%
626
// mininum execution time goes from 74 to 60 cycles
627
// it's faster than -funroll-loops, but using
628
// -funroll-loops w/ this is bad - 74 cycles again.
629
// all this is on a 7450, tuning for the 7450
630
#if 0
631
    for (i = 0; i < h; i++) {
632
        pixelsv1 = vec_ld(0, (unsigned char*)pixels);
633
        pixelsv2 = vec_ld(16, (unsigned char*)pixels);
634
        vec_st(vec_perm(pixelsv1, pixelsv2, perm),
635
               0, (unsigned char*)block);
636
        pixels+=line_size;
637
        block +=line_size;
638
    }
639
#else
640
    for (i = 0; i < h; i += 4) {
641
        pixelsv1 = vec_ld(0, (unsigned char*)pixels);
642
        pixelsv2 = vec_ld(15, (unsigned char*)pixels);
643
        pixelsv1B = vec_ld(line_size, (unsigned char*)pixels);
644
        pixelsv2B = vec_ld(15 + line_size, (unsigned char*)pixels);
645
        pixelsv1C = vec_ld(line_size_2, (unsigned char*)pixels);
646
        pixelsv2C = vec_ld(15 + line_size_2, (unsigned char*)pixels);
647
        pixelsv1D = vec_ld(line_size_3, (unsigned char*)pixels);
648
        pixelsv2D = vec_ld(15 + line_size_3, (unsigned char*)pixels);
649
        vec_st(vec_perm(pixelsv1, pixelsv2, perm),
650
               0, (unsigned char*)block);
651
        vec_st(vec_perm(pixelsv1B, pixelsv2B, perm),
652
               line_size, (unsigned char*)block);
653
        vec_st(vec_perm(pixelsv1C, pixelsv2C, perm),
654
               line_size_2, (unsigned char*)block);
655
        vec_st(vec_perm(pixelsv1D, pixelsv2D, perm),
656
               line_size_3, (unsigned char*)block);
657
        pixels+=line_size_4;
658
        block +=line_size_4;
659
    }
660
#endif
661
POWERPC_PERF_STOP_COUNT(altivec_put_pixels16_num, 1);
662
}
663

    
664
/* next one assumes that ((line_size % 16) == 0) */
665
#define op_avg(a,b)  a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) )
666
void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
667
{
668
POWERPC_PERF_DECLARE(altivec_avg_pixels16_num, 1);
669
    register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;
670
    register vector unsigned char perm = vec_lvsl(0, pixels);
671
    int i;
672

    
673
POWERPC_PERF_START_COUNT(altivec_avg_pixels16_num, 1);
674

    
675
    for (i = 0; i < h; i++) {
676
        pixelsv1 = vec_ld(0, (unsigned char*)pixels);
677
        pixelsv2 = vec_ld(16, (unsigned char*)pixels);
678
        blockv = vec_ld(0, block);
679
        pixelsv = vec_perm(pixelsv1, pixelsv2, perm);
680
        blockv = vec_avg(blockv,pixelsv);
681
        vec_st(blockv, 0, (unsigned char*)block);
682
        pixels+=line_size;
683
        block +=line_size;
684
    }
685

    
686
POWERPC_PERF_STOP_COUNT(altivec_avg_pixels16_num, 1);
687
}
688

    
689
/* next one assumes that ((line_size % 8) == 0) */
690
void avg_pixels8_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)
691
{
692
POWERPC_PERF_DECLARE(altivec_avg_pixels8_num, 1);
693
    register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;
694
    int i;
695

    
696
POWERPC_PERF_START_COUNT(altivec_avg_pixels8_num, 1);
697

    
698
   for (i = 0; i < h; i++) {
699
       /* block is 8 bytes-aligned, so we're either in the
700
          left block (16 bytes-aligned) or in the right block (not) */
701
       int rightside = ((unsigned long)block & 0x0000000F);
702

    
703
       blockv = vec_ld(0, block);
704
       pixelsv1 = vec_ld(0, (unsigned char*)pixels);
705
       pixelsv2 = vec_ld(16, (unsigned char*)pixels);
706
       pixelsv = vec_perm(pixelsv1, pixelsv2, vec_lvsl(0, pixels));
707

    
708
       if (rightside) {
709
           pixelsv = vec_perm(blockv, pixelsv, vcprm(0,1,s0,s1));
710
       } else {
711
           pixelsv = vec_perm(blockv, pixelsv, vcprm(s0,s1,2,3));
712
       }
713

    
714
       blockv = vec_avg(blockv, pixelsv);
715

    
716
       vec_st(blockv, 0, block);
717

    
718
       pixels += line_size;
719
       block += line_size;
720
   }
721

    
722
POWERPC_PERF_STOP_COUNT(altivec_avg_pixels8_num, 1);
723
}
724

    
725
/* next one assumes that ((line_size % 8) == 0) */
726
void put_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
727
{
728
POWERPC_PERF_DECLARE(altivec_put_pixels8_xy2_num, 1);
729
    register int i;
730
    register vector unsigned char pixelsv1, pixelsv2, pixelsavg;
731
    register vector unsigned char blockv, temp1, temp2;
732
    register vector unsigned short pixelssum1, pixelssum2, temp3;
733
    register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);
734
    register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);
735

    
736
    temp1 = vec_ld(0, pixels);
737
    temp2 = vec_ld(16, pixels);
738
    pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
739
    if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {
740
        pixelsv2 = temp2;
741
    } else {
742
        pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
743
    }
744
    pixelsv1 = vec_mergeh(vczero, pixelsv1);
745
    pixelsv2 = vec_mergeh(vczero, pixelsv2);
746
    pixelssum1 = vec_add((vector unsigned short)pixelsv1,
747
                         (vector unsigned short)pixelsv2);
748
    pixelssum1 = vec_add(pixelssum1, vctwo);
749

    
750
POWERPC_PERF_START_COUNT(altivec_put_pixels8_xy2_num, 1);
751
    for (i = 0; i < h ; i++) {
752
        int rightside = ((unsigned long)block & 0x0000000F);
753
        blockv = vec_ld(0, block);
754

    
755
        temp1 = vec_ld(line_size, pixels);
756
        temp2 = vec_ld(line_size + 16, pixels);
757
        pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
758
        if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {
759
            pixelsv2 = temp2;
760
        } else {
761
            pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
762
        }
763

    
764
        pixelsv1 = vec_mergeh(vczero, pixelsv1);
765
        pixelsv2 = vec_mergeh(vczero, pixelsv2);
766
        pixelssum2 = vec_add((vector unsigned short)pixelsv1,
767
                             (vector unsigned short)pixelsv2);
768
        temp3 = vec_add(pixelssum1, pixelssum2);
769
        temp3 = vec_sra(temp3, vctwo);
770
        pixelssum1 = vec_add(pixelssum2, vctwo);
771
        pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);
772

    
773
        if (rightside) {
774
            blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));
775
        } else {
776
            blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));
777
        }
778

    
779
        vec_st(blockv, 0, block);
780

    
781
        block += line_size;
782
        pixels += line_size;
783
    }
784

    
785
POWERPC_PERF_STOP_COUNT(altivec_put_pixels8_xy2_num, 1);
786
}
787

    
788
/* next one assumes that ((line_size % 8) == 0) */
789
void put_no_rnd_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
790
{
791
POWERPC_PERF_DECLARE(altivec_put_no_rnd_pixels8_xy2_num, 1);
792
    register int i;
793
    register vector unsigned char pixelsv1, pixelsv2, pixelsavg;
794
    register vector unsigned char blockv, temp1, temp2;
795
    register vector unsigned short pixelssum1, pixelssum2, temp3;
796
    register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);
797
    register const vector unsigned short vcone = (const vector unsigned short)vec_splat_u16(1);
798
    register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);
799

    
800
    temp1 = vec_ld(0, pixels);
801
    temp2 = vec_ld(16, pixels);
802
    pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
803
    if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {
804
        pixelsv2 = temp2;
805
    } else {
806
        pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
807
    }
808
    pixelsv1 = vec_mergeh(vczero, pixelsv1);
809
    pixelsv2 = vec_mergeh(vczero, pixelsv2);
810
    pixelssum1 = vec_add((vector unsigned short)pixelsv1,
811
                         (vector unsigned short)pixelsv2);
812
    pixelssum1 = vec_add(pixelssum1, vcone);
813

    
814
POWERPC_PERF_START_COUNT(altivec_put_no_rnd_pixels8_xy2_num, 1);
815
    for (i = 0; i < h ; i++) {
816
        int rightside = ((unsigned long)block & 0x0000000F);
817
        blockv = vec_ld(0, block);
818

    
819
        temp1 = vec_ld(line_size, pixels);
820
        temp2 = vec_ld(line_size + 16, pixels);
821
        pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
822
        if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {
823
            pixelsv2 = temp2;
824
        } else {
825
            pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
826
        }
827

    
828
        pixelsv1 = vec_mergeh(vczero, pixelsv1);
829
        pixelsv2 = vec_mergeh(vczero, pixelsv2);
830
        pixelssum2 = vec_add((vector unsigned short)pixelsv1,
831
                             (vector unsigned short)pixelsv2);
832
        temp3 = vec_add(pixelssum1, pixelssum2);
833
        temp3 = vec_sra(temp3, vctwo);
834
        pixelssum1 = vec_add(pixelssum2, vcone);
835
        pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);
836

    
837
        if (rightside) {
838
            blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));
839
        } else {
840
            blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));
841
        }
842

    
843
        vec_st(blockv, 0, block);
844

    
845
        block += line_size;
846
        pixels += line_size;
847
    }
848

    
849
POWERPC_PERF_STOP_COUNT(altivec_put_no_rnd_pixels8_xy2_num, 1);
850
}
851

    
852
/* next one assumes that ((line_size % 16) == 0) */
853
void put_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)
854
{
855
POWERPC_PERF_DECLARE(altivec_put_pixels16_xy2_num, 1);
856
    register int i;
857
    register vector unsigned char pixelsv1, pixelsv2, pixelsv3, pixelsv4;
858
    register vector unsigned char blockv, temp1, temp2;
859
    register vector unsigned short temp3, temp4,
860
        pixelssum1, pixelssum2, pixelssum3, pixelssum4;
861
    register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);
862
    register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);
863

    
864
POWERPC_PERF_START_COUNT(altivec_put_pixels16_xy2_num, 1);
865

    
866
    temp1 = vec_ld(0, pixels);
867
    temp2 = vec_ld(16, pixels);
868
    pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
869
    if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {
870
        pixelsv2 = temp2;
871
    } else {
872
        pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
873
    }
874
    pixelsv3 = vec_mergel(vczero, pixelsv1);
875
    pixelsv4 = vec_mergel(vczero, pixelsv2);
876
    pixelsv1 = vec_mergeh(vczero, pixelsv1);
877
    pixelsv2 = vec_mergeh(vczero, pixelsv2);
878
    pixelssum3 = vec_add((vector unsigned short)pixelsv3,
879
                         (vector unsigned short)pixelsv4);
880
    pixelssum3 = vec_add(pixelssum3, vctwo);
881
    pixelssum1 = vec_add((vector unsigned short)pixelsv1,
882
                         (vector unsigned short)pixelsv2);
883
    pixelssum1 = vec_add(pixelssum1, vctwo);
884

    
885
    for (i = 0; i < h ; i++) {
886
        blockv = vec_ld(0, block);
887

    
888
        temp1 = vec_ld(line_size, pixels);
889
        temp2 = vec_ld(line_size + 16, pixels);
890
        pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
891
        if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {
892
            pixelsv2 = temp2;
893
        } else {
894
            pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
895
        }
896

    
897
        pixelsv3 = vec_mergel(vczero, pixelsv1);
898
        pixelsv4 = vec_mergel(vczero, pixelsv2);
899
        pixelsv1 = vec_mergeh(vczero, pixelsv1);
900
        pixelsv2 = vec_mergeh(vczero, pixelsv2);
901

    
902
        pixelssum4 = vec_add((vector unsigned short)pixelsv3,
903
                             (vector unsigned short)pixelsv4);
904
        pixelssum2 = vec_add((vector unsigned short)pixelsv1,
905
                             (vector unsigned short)pixelsv2);
906
        temp4 = vec_add(pixelssum3, pixelssum4);
907
        temp4 = vec_sra(temp4, vctwo);
908
        temp3 = vec_add(pixelssum1, pixelssum2);
909
        temp3 = vec_sra(temp3, vctwo);
910

    
911
        pixelssum3 = vec_add(pixelssum4, vctwo);
912
        pixelssum1 = vec_add(pixelssum2, vctwo);
913

    
914
        blockv = vec_packsu(temp3, temp4);
915

    
916
        vec_st(blockv, 0, block);
917

    
918
        block += line_size;
919
        pixels += line_size;
920
    }
921

    
922
POWERPC_PERF_STOP_COUNT(altivec_put_pixels16_xy2_num, 1);
923
}
924

    
925
/* next one assumes that ((line_size % 16) == 0) */
926
void put_no_rnd_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)
927
{
928
POWERPC_PERF_DECLARE(altivec_put_no_rnd_pixels16_xy2_num, 1);
929
    register int i;
930
    register vector unsigned char pixelsv1, pixelsv2, pixelsv3, pixelsv4;
931
    register vector unsigned char blockv, temp1, temp2;
932
    register vector unsigned short temp3, temp4,
933
        pixelssum1, pixelssum2, pixelssum3, pixelssum4;
934
    register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);
935
    register const vector unsigned short vcone = (const vector unsigned short)vec_splat_u16(1);
936
    register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);
937

    
938
POWERPC_PERF_START_COUNT(altivec_put_no_rnd_pixels16_xy2_num, 1);
939

    
940
    temp1 = vec_ld(0, pixels);
941
    temp2 = vec_ld(16, pixels);
942
    pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
943
    if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {
944
        pixelsv2 = temp2;
945
    } else {
946
        pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
947
    }
948
    pixelsv3 = vec_mergel(vczero, pixelsv1);
949
    pixelsv4 = vec_mergel(vczero, pixelsv2);
950
    pixelsv1 = vec_mergeh(vczero, pixelsv1);
951
    pixelsv2 = vec_mergeh(vczero, pixelsv2);
952
    pixelssum3 = vec_add((vector unsigned short)pixelsv3,
953
                         (vector unsigned short)pixelsv4);
954
    pixelssum3 = vec_add(pixelssum3, vcone);
955
    pixelssum1 = vec_add((vector unsigned short)pixelsv1,
956
                         (vector unsigned short)pixelsv2);
957
    pixelssum1 = vec_add(pixelssum1, vcone);
958

    
959
    for (i = 0; i < h ; i++) {
960
        blockv = vec_ld(0, block);
961

    
962
        temp1 = vec_ld(line_size, pixels);
963
        temp2 = vec_ld(line_size + 16, pixels);
964
        pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
965
        if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {
966
            pixelsv2 = temp2;
967
        } else {
968
            pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
969
        }
970

    
971
        pixelsv3 = vec_mergel(vczero, pixelsv1);
972
        pixelsv4 = vec_mergel(vczero, pixelsv2);
973
        pixelsv1 = vec_mergeh(vczero, pixelsv1);
974
        pixelsv2 = vec_mergeh(vczero, pixelsv2);
975

    
976
        pixelssum4 = vec_add((vector unsigned short)pixelsv3,
977
                             (vector unsigned short)pixelsv4);
978
        pixelssum2 = vec_add((vector unsigned short)pixelsv1,
979
                             (vector unsigned short)pixelsv2);
980
        temp4 = vec_add(pixelssum3, pixelssum4);
981
        temp4 = vec_sra(temp4, vctwo);
982
        temp3 = vec_add(pixelssum1, pixelssum2);
983
        temp3 = vec_sra(temp3, vctwo);
984

    
985
        pixelssum3 = vec_add(pixelssum4, vcone);
986
        pixelssum1 = vec_add(pixelssum2, vcone);
987

    
988
        blockv = vec_packsu(temp3, temp4);
989

    
990
        vec_st(blockv, 0, block);
991

    
992
        block += line_size;
993
        pixels += line_size;
994
    }
995

    
996
POWERPC_PERF_STOP_COUNT(altivec_put_no_rnd_pixels16_xy2_num, 1);
997
}
998

    
999
int hadamard8_diff8x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){
1000
POWERPC_PERF_DECLARE(altivec_hadamard8_diff8x8_num, 1);
1001
    int sum;
1002
    register const vector unsigned char vzero =
1003
                            (const vector unsigned char)vec_splat_u8(0);
1004
    register vector signed short temp0, temp1, temp2, temp3, temp4,
1005
                                 temp5, temp6, temp7;
1006
POWERPC_PERF_START_COUNT(altivec_hadamard8_diff8x8_num, 1);
1007
    {
1008
    register const vector signed short vprod1 =(const vector signed short)
1009
                                               { 1,-1, 1,-1, 1,-1, 1,-1 };
1010
    register const vector signed short vprod2 =(const vector signed short)
1011
                                               { 1, 1,-1,-1, 1, 1,-1,-1 };
1012
    register const vector signed short vprod3 =(const vector signed short)
1013
                                               { 1, 1, 1, 1,-1,-1,-1,-1 };
1014
    register const vector unsigned char perm1 = (const vector unsigned char)
1015
        {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,
1016
         0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D};
1017
    register const vector unsigned char perm2 = (const vector unsigned char)
1018
        {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,
1019
         0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B};
1020
    register const vector unsigned char perm3 = (const vector unsigned char)
1021
        {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
1022
         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};
1023

    
1024
#define ONEITERBUTTERFLY(i, res)                                          \
1025
    {                                                                     \
1026
    register vector unsigned char src1, src2, srcO;                   \
1027
    register vector unsigned char dst1, dst2, dstO;                   \
1028
    register vector signed short srcV, dstV;                          \
1029
    register vector signed short but0, but1, but2, op1, op2, op3;     \
1030
    src1 = vec_ld(stride * i, src);                                   \
1031
    src2 = vec_ld((stride * i) + 15, src);                            \
1032
    srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src));           \
1033
    dst1 = vec_ld(stride * i, dst);                                   \
1034
    dst2 = vec_ld((stride * i) + 15, dst);                            \
1035
    dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst));           \
1036
    /* promote the unsigned chars to signed shorts */                 \
1037
    /* we're in the 8x8 function, we only care for the first 8 */     \
1038
    srcV = (vector signed short)vec_mergeh((vector signed char)vzero, \
1039
           (vector signed char)srcO);                                 \
1040
    dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \
1041
           (vector signed char)dstO);                                 \
1042
    /* subtractions inside the first butterfly */                     \
1043
    but0 = vec_sub(srcV, dstV);                                       \
1044
    op1  = vec_perm(but0, but0, perm1);                               \
1045
    but1 = vec_mladd(but0, vprod1, op1);                              \
1046
    op2  = vec_perm(but1, but1, perm2);                               \
1047
    but2 = vec_mladd(but1, vprod2, op2);                              \
1048
    op3  = vec_perm(but2, but2, perm3);                               \
1049
    res  = vec_mladd(but2, vprod3, op3);                              \
1050
    }
1051
    ONEITERBUTTERFLY(0, temp0);
1052
    ONEITERBUTTERFLY(1, temp1);
1053
    ONEITERBUTTERFLY(2, temp2);
1054
    ONEITERBUTTERFLY(3, temp3);
1055
    ONEITERBUTTERFLY(4, temp4);
1056
    ONEITERBUTTERFLY(5, temp5);
1057
    ONEITERBUTTERFLY(6, temp6);
1058
    ONEITERBUTTERFLY(7, temp7);
1059
    }
1060
#undef ONEITERBUTTERFLY
1061
    {
1062
    register vector signed int vsum;
1063
    register vector signed short line0 = vec_add(temp0, temp1);
1064
    register vector signed short line1 = vec_sub(temp0, temp1);
1065
    register vector signed short line2 = vec_add(temp2, temp3);
1066
    register vector signed short line3 = vec_sub(temp2, temp3);
1067
    register vector signed short line4 = vec_add(temp4, temp5);
1068
    register vector signed short line5 = vec_sub(temp4, temp5);
1069
    register vector signed short line6 = vec_add(temp6, temp7);
1070
    register vector signed short line7 = vec_sub(temp6, temp7);
1071

    
1072
    register vector signed short line0B = vec_add(line0, line2);
1073
    register vector signed short line2B = vec_sub(line0, line2);
1074
    register vector signed short line1B = vec_add(line1, line3);
1075
    register vector signed short line3B = vec_sub(line1, line3);
1076
    register vector signed short line4B = vec_add(line4, line6);
1077
    register vector signed short line6B = vec_sub(line4, line6);
1078
    register vector signed short line5B = vec_add(line5, line7);
1079
    register vector signed short line7B = vec_sub(line5, line7);
1080

    
1081
    register vector signed short line0C = vec_add(line0B, line4B);
1082
    register vector signed short line4C = vec_sub(line0B, line4B);
1083
    register vector signed short line1C = vec_add(line1B, line5B);
1084
    register vector signed short line5C = vec_sub(line1B, line5B);
1085
    register vector signed short line2C = vec_add(line2B, line6B);
1086
    register vector signed short line6C = vec_sub(line2B, line6B);
1087
    register vector signed short line3C = vec_add(line3B, line7B);
1088
    register vector signed short line7C = vec_sub(line3B, line7B);
1089

    
1090
    vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));
1091
    vsum = vec_sum4s(vec_abs(line1C), vsum);
1092
    vsum = vec_sum4s(vec_abs(line2C), vsum);
1093
    vsum = vec_sum4s(vec_abs(line3C), vsum);
1094
    vsum = vec_sum4s(vec_abs(line4C), vsum);
1095
    vsum = vec_sum4s(vec_abs(line5C), vsum);
1096
    vsum = vec_sum4s(vec_abs(line6C), vsum);
1097
    vsum = vec_sum4s(vec_abs(line7C), vsum);
1098
    vsum = vec_sums(vsum, (vector signed int)vzero);
1099
    vsum = vec_splat(vsum, 3);
1100
    vec_ste(vsum, 0, &sum);
1101
    }
1102
POWERPC_PERF_STOP_COUNT(altivec_hadamard8_diff8x8_num, 1);
1103
    return sum;
1104
}
1105

    
1106
/*
1107
16x8 works with 16 elements; it allows to avoid replicating loads, and
1108
give the compiler more rooms for scheduling.  It's only used from
1109
inside hadamard8_diff16_altivec.
1110

1111
Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has a LOT
1112
of spill code, it seems gcc (unlike xlc) cannot keep everything in registers
1113
by itself. The following code include hand-made registers allocation. It's not
1114
clean, but on a 7450 the resulting code is much faster (best case fall from
1115
700+ cycles to 550).
1116

1117
xlc doesn't add spill code, but it doesn't know how to schedule for the 7450,
1118
and its code isn't much faster than gcc-3.3 on the 7450 (but uses 25% less
1119
instructions...)
1120

1121
On the 970, the hand-made RA is still a win (around 690 vs. around 780), but
1122
xlc goes to around 660 on the regular C code...
1123
*/
1124

    
1125
static int hadamard8_diff16x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h) {
1126
    int sum;
1127
    register vector signed short
1128
        temp0 __asm__ ("v0"),
1129
        temp1 __asm__ ("v1"),
1130
        temp2 __asm__ ("v2"),
1131
        temp3 __asm__ ("v3"),
1132
        temp4 __asm__ ("v4"),
1133
        temp5 __asm__ ("v5"),
1134
        temp6 __asm__ ("v6"),
1135
        temp7 __asm__ ("v7");
1136
    register vector signed short
1137
        temp0S __asm__ ("v8"),
1138
        temp1S __asm__ ("v9"),
1139
        temp2S __asm__ ("v10"),
1140
        temp3S __asm__ ("v11"),
1141
        temp4S __asm__ ("v12"),
1142
        temp5S __asm__ ("v13"),
1143
        temp6S __asm__ ("v14"),
1144
        temp7S __asm__ ("v15");
1145
    register const vector unsigned char vzero __asm__ ("v31") =
1146
        (const vector unsigned char)vec_splat_u8(0);
1147
    {
1148
    register const vector signed short vprod1 __asm__ ("v16") =
1149
        (const vector signed short){ 1,-1, 1,-1, 1,-1, 1,-1 };
1150
    register const vector signed short vprod2 __asm__ ("v17") =
1151
        (const vector signed short){ 1, 1,-1,-1, 1, 1,-1,-1 };
1152
    register const vector signed short vprod3 __asm__ ("v18") =
1153
        (const vector signed short){ 1, 1, 1, 1,-1,-1,-1,-1 };
1154
    register const vector unsigned char perm1 __asm__ ("v19") =
1155
        (const vector unsigned char)
1156
        {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,
1157
         0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D};
1158
    register const vector unsigned char perm2 __asm__ ("v20") =
1159
        (const vector unsigned char)
1160
        {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,
1161
         0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B};
1162
    register const vector unsigned char perm3 __asm__ ("v21") =
1163
        (const vector unsigned char)
1164
        {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
1165
         0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};
1166

    
1167
#define ONEITERBUTTERFLY(i, res1, res2)                               \
1168
    {                                                                 \
1169
    register vector unsigned char src1 __asm__ ("v22"),               \
1170
                                  src2 __asm__ ("v23"),               \
1171
                                  dst1 __asm__ ("v24"),               \
1172
                                  dst2 __asm__ ("v25"),               \
1173
                                  srcO __asm__ ("v22"),               \
1174
                                  dstO __asm__ ("v23");               \
1175
                                                                      \
1176
    register vector signed short  srcV  __asm__ ("v24"),              \
1177
                                  dstV  __asm__ ("v25"),              \
1178
                                  srcW  __asm__ ("v26"),              \
1179
                                  dstW  __asm__ ("v27"),              \
1180
                                  but0  __asm__ ("v28"),              \
1181
                                  but0S __asm__ ("v29"),              \
1182
                                  op1   __asm__ ("v30"),              \
1183
                                  but1  __asm__ ("v22"),              \
1184
                                  op1S  __asm__ ("v23"),              \
1185
                                  but1S __asm__ ("v24"),              \
1186
                                  op2   __asm__ ("v25"),              \
1187
                                  but2  __asm__ ("v26"),              \
1188
                                  op2S  __asm__ ("v27"),              \
1189
                                  but2S __asm__ ("v28"),              \
1190
                                  op3   __asm__ ("v29"),              \
1191
                                  op3S  __asm__ ("v30");              \
1192
                                                                      \
1193
    src1 = vec_ld(stride * i, src);                                   \
1194
    src2 = vec_ld((stride * i) + 16, src);                            \
1195
    srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src));           \
1196
    dst1 = vec_ld(stride * i, dst);                                   \
1197
    dst2 = vec_ld((stride * i) + 16, dst);                            \
1198
    dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst));           \
1199
    /* promote the unsigned chars to signed shorts */                 \
1200
    srcV = (vector signed short)vec_mergeh((vector signed char)vzero, \
1201
           (vector signed char)srcO);                                 \
1202
    dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \
1203
           (vector signed char)dstO);                                 \
1204
    srcW = (vector signed short)vec_mergel((vector signed char)vzero, \
1205
           (vector signed char)srcO);                                 \
1206
    dstW = (vector signed short)vec_mergel((vector signed char)vzero, \
1207
           (vector signed char)dstO);                                 \
1208
    /* subtractions inside the first butterfly */                     \
1209
    but0 = vec_sub(srcV, dstV);                                       \
1210
    but0S = vec_sub(srcW, dstW);                                      \
1211
    op1 = vec_perm(but0, but0, perm1);                                \
1212
    but1 = vec_mladd(but0, vprod1, op1);                              \
1213
    op1S = vec_perm(but0S, but0S, perm1);                             \
1214
    but1S = vec_mladd(but0S, vprod1, op1S);                           \
1215
    op2 = vec_perm(but1, but1, perm2);                                \
1216
    but2 = vec_mladd(but1, vprod2, op2);                              \
1217
    op2S = vec_perm(but1S, but1S, perm2);                             \
1218
    but2S = vec_mladd(but1S, vprod2, op2S);                           \
1219
    op3 = vec_perm(but2, but2, perm3);                                \
1220
    res1 = vec_mladd(but2, vprod3, op3);                              \
1221
    op3S = vec_perm(but2S, but2S, perm3);                             \
1222
    res2 = vec_mladd(but2S, vprod3, op3S);                            \
1223
    }
1224
    ONEITERBUTTERFLY(0, temp0, temp0S);
1225
    ONEITERBUTTERFLY(1, temp1, temp1S);
1226
    ONEITERBUTTERFLY(2, temp2, temp2S);
1227
    ONEITERBUTTERFLY(3, temp3, temp3S);
1228
    ONEITERBUTTERFLY(4, temp4, temp4S);
1229
    ONEITERBUTTERFLY(5, temp5, temp5S);
1230
    ONEITERBUTTERFLY(6, temp6, temp6S);
1231
    ONEITERBUTTERFLY(7, temp7, temp7S);
1232
    }
1233
#undef ONEITERBUTTERFLY
1234
    {
1235
    register vector signed int vsum;
1236
    register vector signed short line0S, line1S, line2S, line3S, line4S,
1237
                                 line5S, line6S, line7S, line0BS,line2BS,
1238
                                 line1BS,line3BS,line4BS,line6BS,line5BS,
1239
                                 line7BS,line0CS,line4CS,line1CS,line5CS,
1240
                                 line2CS,line6CS,line3CS,line7CS;
1241

    
1242
    register vector signed short line0 = vec_add(temp0, temp1);
1243
    register vector signed short line1 = vec_sub(temp0, temp1);
1244
    register vector signed short line2 = vec_add(temp2, temp3);
1245
    register vector signed short line3 = vec_sub(temp2, temp3);
1246
    register vector signed short line4 = vec_add(temp4, temp5);
1247
    register vector signed short line5 = vec_sub(temp4, temp5);
1248
    register vector signed short line6 = vec_add(temp6, temp7);
1249
    register vector signed short line7 = vec_sub(temp6, temp7);
1250

    
1251
    register vector signed short line0B = vec_add(line0, line2);
1252
    register vector signed short line2B = vec_sub(line0, line2);
1253
    register vector signed short line1B = vec_add(line1, line3);
1254
    register vector signed short line3B = vec_sub(line1, line3);
1255
    register vector signed short line4B = vec_add(line4, line6);
1256
    register vector signed short line6B = vec_sub(line4, line6);
1257
    register vector signed short line5B = vec_add(line5, line7);
1258
    register vector signed short line7B = vec_sub(line5, line7);
1259

    
1260
    register vector signed short line0C = vec_add(line0B, line4B);
1261
    register vector signed short line4C = vec_sub(line0B, line4B);
1262
    register vector signed short line1C = vec_add(line1B, line5B);
1263
    register vector signed short line5C = vec_sub(line1B, line5B);
1264
    register vector signed short line2C = vec_add(line2B, line6B);
1265
    register vector signed short line6C = vec_sub(line2B, line6B);
1266
    register vector signed short line3C = vec_add(line3B, line7B);
1267
    register vector signed short line7C = vec_sub(line3B, line7B);
1268

    
1269
    vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));
1270
    vsum = vec_sum4s(vec_abs(line1C), vsum);
1271
    vsum = vec_sum4s(vec_abs(line2C), vsum);
1272
    vsum = vec_sum4s(vec_abs(line3C), vsum);
1273
    vsum = vec_sum4s(vec_abs(line4C), vsum);
1274
    vsum = vec_sum4s(vec_abs(line5C), vsum);
1275
    vsum = vec_sum4s(vec_abs(line6C), vsum);
1276
    vsum = vec_sum4s(vec_abs(line7C), vsum);
1277

    
1278
    line0S = vec_add(temp0S, temp1S);
1279
    line1S = vec_sub(temp0S, temp1S);
1280
    line2S = vec_add(temp2S, temp3S);
1281
    line3S = vec_sub(temp2S, temp3S);
1282
    line4S = vec_add(temp4S, temp5S);
1283
    line5S = vec_sub(temp4S, temp5S);
1284
    line6S = vec_add(temp6S, temp7S);
1285
    line7S = vec_sub(temp6S, temp7S);
1286

    
1287
    line0BS = vec_add(line0S, line2S);
1288
    line2BS = vec_sub(line0S, line2S);
1289
    line1BS = vec_add(line1S, line3S);
1290
    line3BS = vec_sub(line1S, line3S);
1291
    line4BS = vec_add(line4S, line6S);
1292
    line6BS = vec_sub(line4S, line6S);
1293
    line5BS = vec_add(line5S, line7S);
1294
    line7BS = vec_sub(line5S, line7S);
1295

    
1296
    line0CS = vec_add(line0BS, line4BS);
1297
    line4CS = vec_sub(line0BS, line4BS);
1298
    line1CS = vec_add(line1BS, line5BS);
1299
    line5CS = vec_sub(line1BS, line5BS);
1300
    line2CS = vec_add(line2BS, line6BS);
1301
    line6CS = vec_sub(line2BS, line6BS);
1302
    line3CS = vec_add(line3BS, line7BS);
1303
    line7CS = vec_sub(line3BS, line7BS);
1304

    
1305
    vsum = vec_sum4s(vec_abs(line0CS), vsum);
1306
    vsum = vec_sum4s(vec_abs(line1CS), vsum);
1307
    vsum = vec_sum4s(vec_abs(line2CS), vsum);
1308
    vsum = vec_sum4s(vec_abs(line3CS), vsum);
1309
    vsum = vec_sum4s(vec_abs(line4CS), vsum);
1310
    vsum = vec_sum4s(vec_abs(line5CS), vsum);
1311
    vsum = vec_sum4s(vec_abs(line6CS), vsum);
1312
    vsum = vec_sum4s(vec_abs(line7CS), vsum);
1313
    vsum = vec_sums(vsum, (vector signed int)vzero);
1314
    vsum = vec_splat(vsum, 3);
1315
    vec_ste(vsum, 0, &sum);
1316
    }
1317
    return sum;
1318
}
1319

    
1320
int hadamard8_diff16_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){
1321
POWERPC_PERF_DECLARE(altivec_hadamard8_diff16_num, 1);
1322
    int score;
1323
POWERPC_PERF_START_COUNT(altivec_hadamard8_diff16_num, 1);
1324
    score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8);
1325
    if (h==16) {
1326
        dst += 8*stride;
1327
        src += 8*stride;
1328
        score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8);
1329
    }
1330
POWERPC_PERF_STOP_COUNT(altivec_hadamard8_diff16_num, 1);
1331
    return score;
1332
}
1333

    
1334
static void vorbis_inverse_coupling_altivec(float *mag, float *ang,
1335
                                            int blocksize)
1336
{
1337
    int i;
1338
    vector float m, a;
1339
    vector bool int t0, t1;
1340
    const vector unsigned int v_31 = //XXX
1341
        vec_add(vec_add(vec_splat_u32(15),vec_splat_u32(15)),vec_splat_u32(1));
1342
    for (i = 0; i < blocksize; i += 4) {
1343
        m = vec_ld(0, mag+i);
1344
        a = vec_ld(0, ang+i);
1345
        t0 = vec_cmple(m, (vector float)vec_splat_u32(0));
1346
        t1 = vec_cmple(a, (vector float)vec_splat_u32(0));
1347
        a = vec_xor(a, (vector float) vec_sl((vector unsigned int)t0, v_31));
1348
        t0 = (vector bool int)vec_and(a, t1);
1349
        t1 = (vector bool int)vec_andc(a, t1);
1350
        a = vec_sub(m, (vector float)t1);
1351
        m = vec_add(m, (vector float)t0);
1352
        vec_stl(a, 0, ang+i);
1353
        vec_stl(m, 0, mag+i);
1354
    }
1355
}
1356

    
1357
/* next one assumes that ((line_size % 8) == 0) */
1358
void avg_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)
1359
{
1360
POWERPC_PERF_DECLARE(altivec_avg_pixels8_xy2_num, 1);
1361
    register int i;
1362
    register vector unsigned char pixelsv1, pixelsv2, pixelsavg;
1363
    register vector unsigned char blockv, temp1, temp2, blocktemp;
1364
    register vector unsigned short pixelssum1, pixelssum2, temp3;
1365

    
1366
    register const vector unsigned char vczero = (const vector unsigned char)
1367
                                        vec_splat_u8(0);
1368
    register const vector unsigned short vctwo = (const vector unsigned short)
1369
                                        vec_splat_u16(2);
1370

    
1371
    temp1 = vec_ld(0, pixels);
1372
    temp2 = vec_ld(16, pixels);
1373
    pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));
1374
    if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {
1375
        pixelsv2 = temp2;
1376
    } else {
1377
        pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));
1378
    }
1379
    pixelsv1 = vec_mergeh(vczero, pixelsv1);
1380
    pixelsv2 = vec_mergeh(vczero, pixelsv2);
1381
    pixelssum1 = vec_add((vector unsigned short)pixelsv1,
1382
                         (vector unsigned short)pixelsv2);
1383
    pixelssum1 = vec_add(pixelssum1, vctwo);
1384

    
1385
POWERPC_PERF_START_COUNT(altivec_avg_pixels8_xy2_num, 1);
1386
    for (i = 0; i < h ; i++) {
1387
        int rightside = ((unsigned long)block & 0x0000000F);
1388
        blockv = vec_ld(0, block);
1389

    
1390
        temp1 = vec_ld(line_size, pixels);
1391
        temp2 = vec_ld(line_size + 16, pixels);
1392
        pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));
1393
        if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {
1394
            pixelsv2 = temp2;
1395
        } else {
1396
            pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));
1397
        }
1398

    
1399
        pixelsv1 = vec_mergeh(vczero, pixelsv1);
1400
        pixelsv2 = vec_mergeh(vczero, pixelsv2);
1401
        pixelssum2 = vec_add((vector unsigned short)pixelsv1,
1402
                             (vector unsigned short)pixelsv2);
1403
        temp3 = vec_add(pixelssum1, pixelssum2);
1404
        temp3 = vec_sra(temp3, vctwo);
1405
        pixelssum1 = vec_add(pixelssum2, vctwo);
1406
        pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);
1407

    
1408
        if (rightside) {
1409
            blocktemp = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));
1410
        } else {
1411
            blocktemp = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));
1412
        }
1413

    
1414
        blockv = vec_avg(blocktemp, blockv);
1415
        vec_st(blockv, 0, block);
1416

    
1417
        block += line_size;
1418
        pixels += line_size;
1419
    }
1420

    
1421
POWERPC_PERF_STOP_COUNT(altivec_avg_pixels8_xy2_num, 1);
1422
}
1423

    
1424
void dsputil_init_altivec(DSPContext* c, AVCodecContext *avctx)
1425
{
1426
    c->pix_abs[0][1] = sad16_x2_altivec;
1427
    c->pix_abs[0][2] = sad16_y2_altivec;
1428
    c->pix_abs[0][3] = sad16_xy2_altivec;
1429
    c->pix_abs[0][0] = sad16_altivec;
1430
    c->pix_abs[1][0] = sad8_altivec;
1431
    c->sad[0]= sad16_altivec;
1432
    c->sad[1]= sad8_altivec;
1433
    c->pix_norm1 = pix_norm1_altivec;
1434
    c->sse[1]= sse8_altivec;
1435
    c->sse[0]= sse16_altivec;
1436
    c->pix_sum = pix_sum_altivec;
1437
    c->diff_pixels = diff_pixels_altivec;
1438
    c->get_pixels = get_pixels_altivec;
1439
    c->clear_block = clear_block_altivec;
1440
    c->add_bytes= add_bytes_altivec;
1441
    c->put_pixels_tab[0][0] = put_pixels16_altivec;
1442
    /* the two functions do the same thing, so use the same code */
1443
    c->put_no_rnd_pixels_tab[0][0] = put_pixels16_altivec;
1444
    c->avg_pixels_tab[0][0] = avg_pixels16_altivec;
1445
    c->avg_pixels_tab[1][0] = avg_pixels8_altivec;
1446
    c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec;
1447
    c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec;
1448
    c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;
1449
    c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec;
1450
    c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;
1451

    
1452
    c->hadamard8_diff[0] = hadamard8_diff16_altivec;
1453
    c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;
1454
    if (CONFIG_VORBIS_DECODER)
1455
        c->vorbis_inverse_coupling = vorbis_inverse_coupling_altivec;
1456
}