falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35406 Commits
32 Branches
836MB
Tree: c3e15f7b39
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'c3e15f7b39'
${ noResults }
FFmpeg/libavcodec/ppc/dsputil_altivec.c

1409 lines
55KB
Raw Blame History 

  1. /*

  2.  * Copyright (c) 2002 Brian Foley

  3.  * Copyright (c) 2002 Dieter Shirley

  4.  * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>

  5.  *

  6.  * This file is part of Libav.

  7.  *

  8.  * Libav is free software; you can redistribute it and/or

  9.  * modify it under the terms of the GNU Lesser General Public

  10.  * License as published by the Free Software Foundation; either

  11.  * version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * Libav is distributed in the hope that it will be useful,

  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  16.  * Lesser General Public License for more details.

  17.  *

  18.  * You should have received a copy of the GNU Lesser General Public

  19.  * License along with Libav; if not, write to the Free Software

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. #include "config.h"

  24. #if HAVE_ALTIVEC_H

  25. #include <altivec.h>

  26. #endif

  27. #include "libavutil/ppc/types_altivec.h"

  28. #include "libavutil/ppc/util_altivec.h"

  29. #include "libavcodec/dsputil.h"

  30. #include "dsputil_altivec.h"

  31. 

  32. static int sad16_x2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  33. {

  34.     int i;

  35.     int s;

  36.     const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);

  37.     vector unsigned char perm1 = vec_lvsl(0, pix2);

  38.     vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1));

  39.     vector unsigned char pix2l, pix2r;

  40.     vector unsigned char pix1v, pix2v, pix2iv, avgv, t5;

  41.     vector unsigned int sad;

  42.     vector signed int sumdiffs;

  43. 

  44.     s = 0;

  45.     sad = (vector unsigned int)vec_splat_u32(0);

  46.     for (i = 0; i < h; i++) {

  47.         /* Read unaligned pixels into our vectors. The vectors are as follows:

  48.            pix1v: pix1[0]-pix1[15]

  49.            pix2v: pix2[0]-pix2[15]      pix2iv: pix2[1]-pix2[16] */

  50.         pix1v  = vec_ld( 0, pix1);

  51.         pix2l  = vec_ld( 0, pix2);

  52.         pix2r  = vec_ld(16, pix2);

  53.         pix2v  = vec_perm(pix2l, pix2r, perm1);

  54.         pix2iv = vec_perm(pix2l, pix2r, perm2);

  55. 

  56.         /* Calculate the average vector */

  57.         avgv = vec_avg(pix2v, pix2iv);

  58. 

  59.         /* Calculate a sum of abs differences vector */

  60.         t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));

  61. 

  62.         /* Add each 4 pixel group together and put 4 results into sad */

  63.         sad = vec_sum4s(t5, sad);

  64. 

  65.         pix1 += line_size;

  66.         pix2 += line_size;

  67.     }

  68.     /* Sum up the four partial sums, and put the result into s */

  69.     sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);

  70.     sumdiffs = vec_splat(sumdiffs, 3);

  71.     vec_ste(sumdiffs, 0, &s);

  72. 

  73.     return s;

  74. }

  75. 

  76. static int sad16_y2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  77. {

  78.     int i;

  79.     int s;

  80.     const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);

  81.     vector unsigned char perm = vec_lvsl(0, pix2);

  82.     vector unsigned char pix2l, pix2r;

  83.     vector unsigned char pix1v, pix2v, pix3v, avgv, t5;

  84.     vector unsigned int sad;

  85.     vector signed int sumdiffs;

  86.     uint8_t *pix3 = pix2 + line_size;

  87. 

  88.     s = 0;

  89.     sad = (vector unsigned int)vec_splat_u32(0);

  90. 

  91.     /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one

  92.        iteration becomes pix2 in the next iteration. We can use this

  93.        fact to avoid a potentially expensive unaligned read, each

  94.        time around the loop.

  95.        Read unaligned pixels into our vectors. The vectors are as follows:

  96.        pix2v: pix2[0]-pix2[15]

  97.        Split the pixel vectors into shorts */

  98.     pix2l = vec_ld( 0, pix2);

  99.     pix2r = vec_ld(15, pix2);

  100.     pix2v = vec_perm(pix2l, pix2r, perm);

  101. 

  102.     for (i = 0; i < h; i++) {

  103.         /* Read unaligned pixels into our vectors. The vectors are as follows:

  104.            pix1v: pix1[0]-pix1[15]

  105.            pix3v: pix3[0]-pix3[15] */

  106.         pix1v = vec_ld(0, pix1);

  107. 

  108.         pix2l = vec_ld( 0, pix3);

  109.         pix2r = vec_ld(15, pix3);

  110.         pix3v = vec_perm(pix2l, pix2r, perm);

  111. 

  112.         /* Calculate the average vector */

  113.         avgv = vec_avg(pix2v, pix3v);

  114. 

  115.         /* Calculate a sum of abs differences vector */

  116.         t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));

  117. 

  118.         /* Add each 4 pixel group together and put 4 results into sad */

  119.         sad = vec_sum4s(t5, sad);

  120. 

  121.         pix1 += line_size;

  122.         pix2v = pix3v;

  123.         pix3 += line_size;

  124. 

  125.     }

  126. 

  127.     /* Sum up the four partial sums, and put the result into s */

  128.     sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);

  129.     sumdiffs = vec_splat(sumdiffs, 3);

  130.     vec_ste(sumdiffs, 0, &s);

  131.     return s;

  132. }

  133. 

  134. static int sad16_xy2_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  135. {

  136.     int i;

  137.     int s;

  138.     uint8_t *pix3 = pix2 + line_size;

  139.     const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);

  140.     const vector unsigned short two = (const vector unsigned short)vec_splat_u16(2);

  141.     vector unsigned char avgv, t5;

  142.     vector unsigned char perm1 = vec_lvsl(0, pix2);

  143.     vector unsigned char perm2 = vec_add(perm1, vec_splat_u8(1));

  144.     vector unsigned char pix2l, pix2r;

  145.     vector unsigned char pix1v, pix2v, pix3v, pix2iv, pix3iv;

  146.     vector unsigned short pix2lv, pix2hv, pix2ilv, pix2ihv;

  147.     vector unsigned short pix3lv, pix3hv, pix3ilv, pix3ihv;

  148.     vector unsigned short avghv, avglv;

  149.     vector unsigned short t1, t2, t3, t4;

  150.     vector unsigned int sad;

  151.     vector signed int sumdiffs;

  152. 

  153.     sad = (vector unsigned int)vec_splat_u32(0);

  154. 

  155.     s = 0;

  156. 

  157.     /* Due to the fact that pix3 = pix2 + line_size, the pix3 of one

  158.        iteration becomes pix2 in the next iteration. We can use this

  159.        fact to avoid a potentially expensive unaligned read, as well

  160.        as some splitting, and vector addition each time around the loop.

  161.        Read unaligned pixels into our vectors. The vectors are as follows:

  162.        pix2v: pix2[0]-pix2[15]  pix2iv: pix2[1]-pix2[16]

  163.        Split the pixel vectors into shorts */

  164.     pix2l  = vec_ld( 0, pix2);

  165.     pix2r  = vec_ld(16, pix2);

  166.     pix2v  = vec_perm(pix2l, pix2r, perm1);

  167.     pix2iv = vec_perm(pix2l, pix2r, perm2);

  168. 

  169.     pix2hv  = (vector unsigned short) vec_mergeh(zero, pix2v);

  170.     pix2lv  = (vector unsigned short) vec_mergel(zero, pix2v);

  171.     pix2ihv = (vector unsigned short) vec_mergeh(zero, pix2iv);

  172.     pix2ilv = (vector unsigned short) vec_mergel(zero, pix2iv);

  173.     t1 = vec_add(pix2hv, pix2ihv);

  174.     t2 = vec_add(pix2lv, pix2ilv);

  175. 

  176.     for (i = 0; i < h; i++) {

  177.         /* Read unaligned pixels into our vectors. The vectors are as follows:

  178.            pix1v: pix1[0]-pix1[15]

  179.            pix3v: pix3[0]-pix3[15]      pix3iv: pix3[1]-pix3[16] */

  180.         pix1v = vec_ld(0, pix1);

  181. 

  182.         pix2l  = vec_ld( 0, pix3);

  183.         pix2r  = vec_ld(16, pix3);

  184.         pix3v  = vec_perm(pix2l, pix2r, perm1);

  185.         pix3iv = vec_perm(pix2l, pix2r, perm2);

  186. 

  187.         /* Note that AltiVec does have vec_avg, but this works on vector pairs

  188.            and rounds up. We could do avg(avg(a,b),avg(c,d)), but the rounding

  189.            would mean that, for example, avg(3,0,0,1) = 2, when it should be 1.

  190.            Instead, we have to split the pixel vectors into vectors of shorts,

  191.            and do the averaging by hand. */

  192. 

  193.         /* Split the pixel vectors into shorts */

  194.         pix3hv  = (vector unsigned short) vec_mergeh(zero, pix3v);

  195.         pix3lv  = (vector unsigned short) vec_mergel(zero, pix3v);

  196.         pix3ihv = (vector unsigned short) vec_mergeh(zero, pix3iv);

  197.         pix3ilv = (vector unsigned short) vec_mergel(zero, pix3iv);

  198. 

  199.         /* Do the averaging on them */

  200.         t3 = vec_add(pix3hv, pix3ihv);

  201.         t4 = vec_add(pix3lv, pix3ilv);

  202. 

  203.         avghv = vec_sr(vec_add(vec_add(t1, t3), two), two);

  204.         avglv = vec_sr(vec_add(vec_add(t2, t4), two), two);

  205. 

  206.         /* Pack the shorts back into a result */

  207.         avgv = vec_pack(avghv, avglv);

  208. 

  209.         /* Calculate a sum of abs differences vector */

  210.         t5 = vec_sub(vec_max(pix1v, avgv), vec_min(pix1v, avgv));

  211. 

  212.         /* Add each 4 pixel group together and put 4 results into sad */

  213.         sad = vec_sum4s(t5, sad);

  214. 

  215.         pix1 += line_size;

  216.         pix3 += line_size;

  217.         /* Transfer the calculated values for pix3 into pix2 */

  218.         t1 = t3;

  219.         t2 = t4;

  220.     }

  221.     /* Sum up the four partial sums, and put the result into s */

  222.     sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);

  223.     sumdiffs = vec_splat(sumdiffs, 3);

  224.     vec_ste(sumdiffs, 0, &s);

  225. 

  226.     return s;

  227. }

  228. 

  229. static int sad16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  230. {

  231.     int i;

  232.     int s;

  233.     const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);

  234.     vector unsigned char perm = vec_lvsl(0, pix2);

  235.     vector unsigned char t1, t2, t3,t4, t5;

  236.     vector unsigned int sad;

  237.     vector signed int sumdiffs;

  238. 

  239.     sad = (vector unsigned int)vec_splat_u32(0);

  240. 

  241. 

  242.     for (i = 0; i < h; i++) {

  243.         /* Read potentially unaligned pixels into t1 and t2 */

  244.         vector unsigned char pix2l = vec_ld( 0, pix2);

  245.         vector unsigned char pix2r = vec_ld(15, pix2);

  246.         t1 = vec_ld(0, pix1);

  247.         t2 = vec_perm(pix2l, pix2r, perm);

  248. 

  249.         /* Calculate a sum of abs differences vector */

  250.         t3 = vec_max(t1, t2);

  251.         t4 = vec_min(t1, t2);

  252.         t5 = vec_sub(t3, t4);

  253. 

  254.         /* Add each 4 pixel group together and put 4 results into sad */

  255.         sad = vec_sum4s(t5, sad);

  256. 

  257.         pix1 += line_size;

  258.         pix2 += line_size;

  259.     }

  260. 

  261.     /* Sum up the four partial sums, and put the result into s */

  262.     sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);

  263.     sumdiffs = vec_splat(sumdiffs, 3);

  264.     vec_ste(sumdiffs, 0, &s);

  265. 

  266.     return s;

  267. }

  268. 

  269. static int sad8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  270. {

  271.     int i;

  272.     int s;

  273.     const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);

  274.     const vector unsigned char permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0};

  275.     vector unsigned char perm1 = vec_lvsl(0, pix1);

  276.     vector unsigned char perm2 = vec_lvsl(0, pix2);

  277.     vector unsigned char t1, t2, t3,t4, t5;

  278.     vector unsigned int sad;

  279.     vector signed int sumdiffs;

  280. 

  281.     sad = (vector unsigned int)vec_splat_u32(0);

  282. 

  283.     for (i = 0; i < h; i++) {

  284.         /* Read potentially unaligned pixels into t1 and t2

  285.            Since we're reading 16 pixels, and actually only want 8,

  286.            mask out the last 8 pixels. The 0s don't change the sum. */

  287.         vector unsigned char pix1l = vec_ld( 0, pix1);

  288.         vector unsigned char pix1r = vec_ld(15, pix1);

  289.         vector unsigned char pix2l = vec_ld( 0, pix2);

  290.         vector unsigned char pix2r = vec_ld(15, pix2);

  291.         t1 = vec_and(vec_perm(pix1l, pix1r, perm1), permclear);

  292.         t2 = vec_and(vec_perm(pix2l, pix2r, perm2), permclear);

  293. 

  294.         /* Calculate a sum of abs differences vector */

  295.         t3 = vec_max(t1, t2);

  296.         t4 = vec_min(t1, t2);

  297.         t5 = vec_sub(t3, t4);

  298. 

  299.         /* Add each 4 pixel group together and put 4 results into sad */

  300.         sad = vec_sum4s(t5, sad);

  301. 

  302.         pix1 += line_size;

  303.         pix2 += line_size;

  304.     }

  305. 

  306.     /* Sum up the four partial sums, and put the result into s */

  307.     sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);

  308.     sumdiffs = vec_splat(sumdiffs, 3);

  309.     vec_ste(sumdiffs, 0, &s);

  310. 

  311.     return s;

  312. }

  313. 

  314. static int pix_norm1_altivec(uint8_t *pix, int line_size)

  315. {

  316.     int i;

  317.     int s;

  318.     const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);

  319.     vector unsigned char perm = vec_lvsl(0, pix);

  320.     vector unsigned char pixv;

  321.     vector unsigned int sv;

  322.     vector signed int sum;

  323. 

  324.     sv = (vector unsigned int)vec_splat_u32(0);

  325. 

  326.     s = 0;

  327.     for (i = 0; i < 16; i++) {

  328.         /* Read in the potentially unaligned pixels */

  329.         vector unsigned char pixl = vec_ld( 0, pix);

  330.         vector unsigned char pixr = vec_ld(15, pix);

  331.         pixv = vec_perm(pixl, pixr, perm);

  332. 

  333.         /* Square the values, and add them to our sum */

  334.         sv = vec_msum(pixv, pixv, sv);

  335. 

  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. static int sse8_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  352. {

  353.     int i;

  354.     int s;

  355.     const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);

  356.     const vector unsigned char permclear = (vector unsigned char){255,255,255,255,255,255,255,255,0,0,0,0,0,0,0,0};

  357.     vector unsigned char perm1 = vec_lvsl(0, pix1);

  358.     vector unsigned char perm2 = vec_lvsl(0, pix2);

  359.     vector unsigned char t1, t2, t3,t4, t5;

  360.     vector unsigned int sum;

  361.     vector signed int sumsqr;

  362. 

  363.     sum = (vector unsigned int)vec_splat_u32(0);

  364. 

  365.     for (i = 0; i < h; i++) {

  366.         /* Read potentially unaligned pixels into t1 and t2

  367.            Since we're reading 16 pixels, and actually only want 8,

  368.            mask out the last 8 pixels. The 0s don't change the sum. */

  369.         vector unsigned char pix1l = vec_ld( 0, pix1);

  370.         vector unsigned char pix1r = vec_ld(15, pix1);

  371.         vector unsigned char pix2l = vec_ld( 0, pix2);

  372.         vector unsigned char pix2r = vec_ld(15, pix2);

  373.         t1 = vec_and(vec_perm(pix1l, pix1r, perm1), permclear);

  374.         t2 = vec_and(vec_perm(pix2l, pix2r, perm2), permclear);

  375. 

  376.         /* Since we want to use unsigned chars, we can take advantage

  377.            of the fact that abs(a-b)^2 = (a-b)^2. */

  378. 

  379.         /* Calculate abs differences vector */

  380.         t3 = vec_max(t1, t2);

  381.         t4 = vec_min(t1, t2);

  382.         t5 = vec_sub(t3, t4);

  383. 

  384.         /* Square the values and add them to our sum */

  385.         sum = vec_msum(t5, t5, sum);

  386. 

  387.         pix1 += line_size;

  388.         pix2 += line_size;

  389.     }

  390. 

  391.     /* Sum up the four partial sums, and put the result into s */

  392.     sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);

  393.     sumsqr = vec_splat(sumsqr, 3);

  394.     vec_ste(sumsqr, 0, &s);

  395. 

  396.     return s;

  397. }

  398. 

  399. /**

  400.  * Sum of Squared Errors for a 16x16 block.

  401.  * AltiVec-enhanced.

  402.  * It's the sad16_altivec code above w/ squaring added.

  403.  */

  404. static int sse16_altivec(void *v, uint8_t *pix1, uint8_t *pix2, int line_size, int h)

  405. {

  406.     int i;

  407.     int s;

  408.     const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);

  409.     vector unsigned char perm = vec_lvsl(0, pix2);

  410.     vector unsigned char t1, t2, t3,t4, t5;

  411.     vector unsigned int sum;

  412.     vector signed int sumsqr;

  413. 

  414.     sum = (vector unsigned int)vec_splat_u32(0);

  415. 

  416.     for (i = 0; i < h; i++) {

  417.         /* Read potentially unaligned pixels into t1 and t2 */

  418.         vector unsigned char pix2l = vec_ld( 0, pix2);

  419.         vector unsigned char pix2r = vec_ld(15, pix2);

  420.         t1 = vec_ld(0, pix1);

  421.         t2 = vec_perm(pix2l, pix2r, perm);

  422. 

  423.         /* Since we want to use unsigned chars, we can take advantage

  424.            of the fact that abs(a-b)^2 = (a-b)^2. */

  425. 

  426.         /* Calculate abs differences vector */

  427.         t3 = vec_max(t1, t2);

  428.         t4 = vec_min(t1, t2);

  429.         t5 = vec_sub(t3, t4);

  430. 

  431.         /* Square the values and add them to our sum */

  432.         sum = vec_msum(t5, t5, sum);

  433. 

  434.         pix1 += line_size;

  435.         pix2 += line_size;

  436.     }

  437. 

  438.     /* Sum up the four partial sums, and put the result into s */

  439.     sumsqr = vec_sums((vector signed int) sum, (vector signed int) zero);

  440.     sumsqr = vec_splat(sumsqr, 3);

  441.     vec_ste(sumsqr, 0, &s);

  442. 

  443.     return s;

  444. }

  445. 

  446. static int pix_sum_altivec(uint8_t * pix, int line_size)

  447. {

  448.     const vector unsigned int zero = (const vector unsigned int)vec_splat_u32(0);

  449.     vector unsigned char perm = vec_lvsl(0, pix);

  450.     vector unsigned char t1;

  451.     vector unsigned int sad;

  452.     vector signed int sumdiffs;

  453. 

  454.     int i;

  455.     int s;

  456. 

  457.     sad = (vector unsigned int)vec_splat_u32(0);

  458. 

  459.     for (i = 0; i < 16; i++) {

  460.         /* Read the potentially unaligned 16 pixels into t1 */

  461.         vector unsigned char pixl = vec_ld( 0, pix);

  462.         vector unsigned char pixr = vec_ld(15, pix);

  463.         t1 = vec_perm(pixl, pixr, perm);

  464. 

  465.         /* Add each 4 pixel group together and put 4 results into sad */

  466.         sad = vec_sum4s(t1, sad);

  467. 

  468.         pix += line_size;

  469.     }

  470. 

  471.     /* Sum up the four partial sums, and put the result into s */

  472.     sumdiffs = vec_sums((vector signed int) sad, (vector signed int) zero);

  473.     sumdiffs = vec_splat(sumdiffs, 3);

  474.     vec_ste(sumdiffs, 0, &s);

  475. 

  476.     return s;

  477. }

  478. 

  479. static void get_pixels_altivec(DCTELEM *restrict block, const uint8_t *pixels, int line_size)

  480. {

  481.     int i;

  482.     vector unsigned char perm = vec_lvsl(0, pixels);

  483.     vector unsigned char bytes;

  484.     const vector unsigned char zero = (const vector unsigned char)vec_splat_u8(0);

  485.     vector signed short shorts;

  486. 

  487.     for (i = 0; i < 8; i++) {

  488.         // Read potentially unaligned pixels.

  489.         // We're reading 16 pixels, and actually only want 8,

  490.         // but we simply ignore the extras.

  491.         vector unsigned char pixl = vec_ld( 0, pixels);

  492.         vector unsigned char pixr = vec_ld(15, pixels);

  493.         bytes = vec_perm(pixl, pixr, perm);

  494. 

  495.         // convert the bytes into shorts

  496.         shorts = (vector signed short)vec_mergeh(zero, bytes);

  497. 

  498.         // save the data to the block, we assume the block is 16-byte aligned

  499.         vec_st(shorts, i*16, (vector signed short*)block);

  500. 

  501.         pixels += line_size;

  502.     }

  503. }

  504. 

  505. static void diff_pixels_altivec(DCTELEM *restrict block, const uint8_t *s1,

  506.         const uint8_t *s2, int stride)

  507. {

  508.     int i;

  509.     vector unsigned char perm1 = vec_lvsl(0, s1);

  510.     vector unsigned char perm2 = vec_lvsl(0, s2);

  511.     vector unsigned char bytes, pixl, pixr;

  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.         pixl = vec_ld( 0, s1);

  520.         pixr = vec_ld(15, s1);

  521.         bytes = vec_perm(pixl, pixr, perm1);

  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.         pixl = vec_ld( 0, s2);

  528.         pixr = vec_ld(15, s2);

  529.         bytes = vec_perm(pixl, pixr, perm2);

  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.         pixl = vec_ld( 0, s1);

  552.         pixr = vec_ld(15, s1);

  553.         bytes = vec_perm(pixl, pixr, perm1);

  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.         pixl = vec_ld( 0, s2);

  560.         pixr = vec_ld(15, s2);

  561.         bytes = vec_perm(pixl, pixr, perm2);

  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. static 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 ff_put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  611. {

  612.     register vector unsigned char pixelsv1, pixelsv2;

  613.     register vector unsigned char pixelsv1B, pixelsv2B;

  614.     register vector unsigned char pixelsv1C, pixelsv2C;

  615.     register vector unsigned char pixelsv1D, pixelsv2D;

  616. 

  617.     register vector unsigned char perm = vec_lvsl(0, pixels);

  618.     int i;

  619.     register int line_size_2 = line_size << 1;

  620.     register int line_size_3 = line_size + line_size_2;

  621.     register int line_size_4 = line_size << 2;

  622. 

  623. // hand-unrolling the loop by 4 gains about 15%

  624. // mininum execution time goes from 74 to 60 cycles

  625. // it's faster than -funroll-loops, but using

  626. // -funroll-loops w/ this is bad - 74 cycles again.

  627. // all this is on a 7450, tuning for the 7450

  628.     for (i = 0; i < h; i += 4) {

  629.         pixelsv1  = vec_ld( 0, pixels);

  630.         pixelsv2  = vec_ld(15, pixels);

  631.         pixelsv1B = vec_ld(line_size, pixels);

  632.         pixelsv2B = vec_ld(15 + line_size, pixels);

  633.         pixelsv1C = vec_ld(line_size_2, pixels);

  634.         pixelsv2C = vec_ld(15 + line_size_2, pixels);

  635.         pixelsv1D = vec_ld(line_size_3, pixels);

  636.         pixelsv2D = vec_ld(15 + line_size_3, pixels);

  637.         vec_st(vec_perm(pixelsv1, pixelsv2, perm),

  638.                0, (unsigned char*)block);

  639.         vec_st(vec_perm(pixelsv1B, pixelsv2B, perm),

  640.                line_size, (unsigned char*)block);

  641.         vec_st(vec_perm(pixelsv1C, pixelsv2C, perm),

  642.                line_size_2, (unsigned char*)block);

  643.         vec_st(vec_perm(pixelsv1D, pixelsv2D, perm),

  644.                line_size_3, (unsigned char*)block);

  645.         pixels+=line_size_4;

  646.         block +=line_size_4;

  647.     }

  648. }

  649. 

  650. /* next one assumes that ((line_size % 16) == 0) */

  651. #define op_avg(a,b)  a = ( ((a)|(b)) - ((((a)^(b))&0xFEFEFEFEUL)>>1) )

  652. void ff_avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  653. {

  654.     register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;

  655.     register vector unsigned char perm = vec_lvsl(0, pixels);

  656.     int i;

  657. 

  658.     for (i = 0; i < h; i++) {

  659.         pixelsv1 = vec_ld( 0, pixels);

  660.         pixelsv2 = vec_ld(16,pixels);

  661.         blockv = vec_ld(0, block);

  662.         pixelsv = vec_perm(pixelsv1, pixelsv2, perm);

  663.         blockv = vec_avg(blockv,pixelsv);

  664.         vec_st(blockv, 0, (unsigned char*)block);

  665.         pixels+=line_size;

  666.         block +=line_size;

  667.     }

  668. }

  669. 

  670. /* next one assumes that ((line_size % 8) == 0) */

  671. static void avg_pixels8_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)

  672. {

  673.     register vector unsigned char pixelsv1, pixelsv2, pixelsv, blockv;

  674.     int i;

  675. 

  676.    for (i = 0; i < h; i++) {

  677.        /* block is 8 bytes-aligned, so we're either in the

  678.           left block (16 bytes-aligned) or in the right block (not) */

  679.        int rightside = ((unsigned long)block & 0x0000000F);

  680. 

  681.        blockv = vec_ld(0, block);

  682.        pixelsv1 = vec_ld( 0, pixels);

  683.        pixelsv2 = vec_ld(16, pixels);

  684.        pixelsv = vec_perm(pixelsv1, pixelsv2, vec_lvsl(0, pixels));

  685. 

  686.        if (rightside) {

  687.            pixelsv = vec_perm(blockv, pixelsv, vcprm(0,1,s0,s1));

  688.        } else {

  689.            pixelsv = vec_perm(blockv, pixelsv, vcprm(s0,s1,2,3));

  690.        }

  691. 

  692.        blockv = vec_avg(blockv, pixelsv);

  693. 

  694.        vec_st(blockv, 0, block);

  695. 

  696.        pixels += line_size;

  697.        block += line_size;

  698.    }

  699. }

  700. 

  701. /* next one assumes that ((line_size % 8) == 0) */

  702. static void put_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  703. {

  704.     register int i;

  705.     register vector unsigned char pixelsv1, pixelsv2, pixelsavg;

  706.     register vector unsigned char blockv, temp1, temp2;

  707.     register vector unsigned short pixelssum1, pixelssum2, temp3;

  708.     register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);

  709.     register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);

  710. 

  711.     temp1 = vec_ld(0, pixels);

  712.     temp2 = vec_ld(16, pixels);

  713.     pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));

  714.     if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {

  715.         pixelsv2 = temp2;

  716.     } else {

  717.         pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));

  718.     }

  719.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  720.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

  721.     pixelssum1 = vec_add((vector unsigned short)pixelsv1,

  722.                          (vector unsigned short)pixelsv2);

  723.     pixelssum1 = vec_add(pixelssum1, vctwo);

  724. 

  725.     for (i = 0; i < h ; i++) {

  726.         int rightside = ((unsigned long)block & 0x0000000F);

  727.         blockv = vec_ld(0, block);

  728. 

  729.         temp1 = vec_ld(line_size, pixels);

  730.         temp2 = vec_ld(line_size + 16, pixels);

  731.         pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));

  732.         if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {

  733.             pixelsv2 = temp2;

  734.         } else {

  735.             pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));

  736.         }

  737. 

  738.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  739.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  740.         pixelssum2 = vec_add((vector unsigned short)pixelsv1,

  741.                              (vector unsigned short)pixelsv2);

  742.         temp3 = vec_add(pixelssum1, pixelssum2);

  743.         temp3 = vec_sra(temp3, vctwo);

  744.         pixelssum1 = vec_add(pixelssum2, vctwo);

  745.         pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);

  746. 

  747.         if (rightside) {

  748.             blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));

  749.         } else {

  750.             blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));

  751.         }

  752. 

  753.         vec_st(blockv, 0, block);

  754. 

  755.         block += line_size;

  756.         pixels += line_size;

  757.     }

  758. }

  759. 

  760. /* next one assumes that ((line_size % 8) == 0) */

  761. static void put_no_rnd_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  762. {

  763.     register int i;

  764.     register vector unsigned char pixelsv1, pixelsv2, pixelsavg;

  765.     register vector unsigned char blockv, temp1, temp2;

  766.     register vector unsigned short pixelssum1, pixelssum2, temp3;

  767.     register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);

  768.     register const vector unsigned short vcone = (const vector unsigned short)vec_splat_u16(1);

  769.     register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);

  770. 

  771.     temp1 = vec_ld(0, pixels);

  772.     temp2 = vec_ld(16, pixels);

  773.     pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));

  774.     if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {

  775.         pixelsv2 = temp2;

  776.     } else {

  777.         pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));

  778.     }

  779.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  780.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

  781.     pixelssum1 = vec_add((vector unsigned short)pixelsv1,

  782.                          (vector unsigned short)pixelsv2);

  783.     pixelssum1 = vec_add(pixelssum1, vcone);

  784. 

  785.     for (i = 0; i < h ; i++) {

  786.         int rightside = ((unsigned long)block & 0x0000000F);

  787.         blockv = vec_ld(0, block);

  788. 

  789.         temp1 = vec_ld(line_size, pixels);

  790.         temp2 = vec_ld(line_size + 16, pixels);

  791.         pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));

  792.         if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {

  793.             pixelsv2 = temp2;

  794.         } else {

  795.             pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));

  796.         }

  797. 

  798.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  799.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  800.         pixelssum2 = vec_add((vector unsigned short)pixelsv1,

  801.                              (vector unsigned short)pixelsv2);

  802.         temp3 = vec_add(pixelssum1, pixelssum2);

  803.         temp3 = vec_sra(temp3, vctwo);

  804.         pixelssum1 = vec_add(pixelssum2, vcone);

  805.         pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);

  806. 

  807.         if (rightside) {

  808.             blockv = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));

  809.         } else {

  810.             blockv = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));

  811.         }

  812. 

  813.         vec_st(blockv, 0, block);

  814. 

  815.         block += line_size;

  816.         pixels += line_size;

  817.     }

  818. }

  819. 

  820. /* next one assumes that ((line_size % 16) == 0) */

  821. static void put_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)

  822. {

  823.     register int i;

  824.     register vector unsigned char pixelsv1, pixelsv2, pixelsv3, pixelsv4;

  825.     register vector unsigned char blockv, temp1, temp2;

  826.     register vector unsigned short temp3, temp4,

  827.         pixelssum1, pixelssum2, pixelssum3, pixelssum4;

  828.     register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);

  829.     register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);

  830. 

  831.     temp1 = vec_ld(0, pixels);

  832.     temp2 = vec_ld(16, pixels);

  833.     pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));

  834.     if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {

  835.         pixelsv2 = temp2;

  836.     } else {

  837.         pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));

  838.     }

  839.     pixelsv3 = vec_mergel(vczero, pixelsv1);

  840.     pixelsv4 = vec_mergel(vczero, pixelsv2);

  841.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  842.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

  843.     pixelssum3 = vec_add((vector unsigned short)pixelsv3,

  844.                          (vector unsigned short)pixelsv4);

  845.     pixelssum3 = vec_add(pixelssum3, vctwo);

  846.     pixelssum1 = vec_add((vector unsigned short)pixelsv1,

  847.                          (vector unsigned short)pixelsv2);

  848.     pixelssum1 = vec_add(pixelssum1, vctwo);

  849. 

  850.     for (i = 0; i < h ; i++) {

  851.         blockv = vec_ld(0, block);

  852. 

  853.         temp1 = vec_ld(line_size, pixels);

  854.         temp2 = vec_ld(line_size + 16, pixels);

  855.         pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));

  856.         if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {

  857.             pixelsv2 = temp2;

  858.         } else {

  859.             pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));

  860.         }

  861. 

  862.         pixelsv3 = vec_mergel(vczero, pixelsv1);

  863.         pixelsv4 = vec_mergel(vczero, pixelsv2);

  864.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  865.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  866. 

  867.         pixelssum4 = vec_add((vector unsigned short)pixelsv3,

  868.                              (vector unsigned short)pixelsv4);

  869.         pixelssum2 = vec_add((vector unsigned short)pixelsv1,

  870.                              (vector unsigned short)pixelsv2);

  871.         temp4 = vec_add(pixelssum3, pixelssum4);

  872.         temp4 = vec_sra(temp4, vctwo);

  873.         temp3 = vec_add(pixelssum1, pixelssum2);

  874.         temp3 = vec_sra(temp3, vctwo);

  875. 

  876.         pixelssum3 = vec_add(pixelssum4, vctwo);

  877.         pixelssum1 = vec_add(pixelssum2, vctwo);

  878. 

  879.         blockv = vec_packsu(temp3, temp4);

  880. 

  881.         vec_st(blockv, 0, block);

  882. 

  883.         block += line_size;

  884.         pixels += line_size;

  885.     }

  886. }

  887. 

  888. /* next one assumes that ((line_size % 16) == 0) */

  889. static void put_no_rnd_pixels16_xy2_altivec(uint8_t * block, const uint8_t * pixels, int line_size, int h)

  890. {

  891.     register int i;

  892.     register vector unsigned char pixelsv1, pixelsv2, pixelsv3, pixelsv4;

  893.     register vector unsigned char blockv, temp1, temp2;

  894.     register vector unsigned short temp3, temp4,

  895.         pixelssum1, pixelssum2, pixelssum3, pixelssum4;

  896.     register const vector unsigned char vczero = (const vector unsigned char)vec_splat_u8(0);

  897.     register const vector unsigned short vcone = (const vector unsigned short)vec_splat_u16(1);

  898.     register const vector unsigned short vctwo = (const vector unsigned short)vec_splat_u16(2);

  899. 

  900.     temp1 = vec_ld(0, pixels);

  901.     temp2 = vec_ld(16, pixels);

  902.     pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));

  903.     if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {

  904.         pixelsv2 = temp2;

  905.     } else {

  906.         pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));

  907.     }

  908.     pixelsv3 = vec_mergel(vczero, pixelsv1);

  909.     pixelsv4 = vec_mergel(vczero, pixelsv2);

  910.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  911.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

  912.     pixelssum3 = vec_add((vector unsigned short)pixelsv3,

  913.                          (vector unsigned short)pixelsv4);

  914.     pixelssum3 = vec_add(pixelssum3, vcone);

  915.     pixelssum1 = vec_add((vector unsigned short)pixelsv1,

  916.                          (vector unsigned short)pixelsv2);

  917.     pixelssum1 = vec_add(pixelssum1, vcone);

  918. 

  919.     for (i = 0; i < h ; i++) {

  920.         blockv = vec_ld(0, block);

  921. 

  922.         temp1 = vec_ld(line_size, pixels);

  923.         temp2 = vec_ld(line_size + 16, pixels);

  924.         pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));

  925.         if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {

  926.             pixelsv2 = temp2;

  927.         } else {

  928.             pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));

  929.         }

  930. 

  931.         pixelsv3 = vec_mergel(vczero, pixelsv1);

  932.         pixelsv4 = vec_mergel(vczero, pixelsv2);

  933.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  934.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  935. 

  936.         pixelssum4 = vec_add((vector unsigned short)pixelsv3,

  937.                              (vector unsigned short)pixelsv4);

  938.         pixelssum2 = vec_add((vector unsigned short)pixelsv1,

  939.                              (vector unsigned short)pixelsv2);

  940.         temp4 = vec_add(pixelssum3, pixelssum4);

  941.         temp4 = vec_sra(temp4, vctwo);

  942.         temp3 = vec_add(pixelssum1, pixelssum2);

  943.         temp3 = vec_sra(temp3, vctwo);

  944. 

  945.         pixelssum3 = vec_add(pixelssum4, vcone);

  946.         pixelssum1 = vec_add(pixelssum2, vcone);

  947. 

  948.         blockv = vec_packsu(temp3, temp4);

  949. 

  950.         vec_st(blockv, 0, block);

  951. 

  952.         block += line_size;

  953.         pixels += line_size;

  954.     }

  955. }

  956. 

  957. static int hadamard8_diff8x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){

  958.     int sum;

  959.     register const vector unsigned char vzero =

  960.                             (const vector unsigned char)vec_splat_u8(0);

  961.     register vector signed short temp0, temp1, temp2, temp3, temp4,

  962.                                  temp5, temp6, temp7;

  963.     {

  964.     register const vector signed short vprod1 =(const vector signed short)

  965.                                                { 1,-1, 1,-1, 1,-1, 1,-1 };

  966.     register const vector signed short vprod2 =(const vector signed short)

  967.                                                { 1, 1,-1,-1, 1, 1,-1,-1 };

  968.     register const vector signed short vprod3 =(const vector signed short)

  969.                                                { 1, 1, 1, 1,-1,-1,-1,-1 };

  970.     register const vector unsigned char perm1 = (const vector unsigned char)

  971.         {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,

  972.          0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D};

  973.     register const vector unsigned char perm2 = (const vector unsigned char)

  974.         {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,

  975.          0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B};

  976.     register const vector unsigned char perm3 = (const vector unsigned char)

  977.         {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,

  978.          0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};

  979. 

  980. #define ONEITERBUTTERFLY(i, res)                                          \

  981.     {                                                                     \

  982.     register vector unsigned char src1, src2, srcO;                   \

  983.     register vector unsigned char dst1, dst2, dstO;                   \

  984.     register vector signed short srcV, dstV;                          \

  985.     register vector signed short but0, but1, but2, op1, op2, op3;     \

  986.     src1 = vec_ld(stride * i, src);                                   \

  987.     src2 = vec_ld((stride * i) + 15, src);                            \

  988.     srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src));           \

  989.     dst1 = vec_ld(stride * i, dst);                                   \

  990.     dst2 = vec_ld((stride * i) + 15, dst);                            \

  991.     dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst));           \

  992.     /* promote the unsigned chars to signed shorts */                 \

  993.     /* we're in the 8x8 function, we only care for the first 8 */     \

  994.     srcV = (vector signed short)vec_mergeh((vector signed char)vzero, \

  995.            (vector signed char)srcO);                                 \

  996.     dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \

  997.            (vector signed char)dstO);                                 \

  998.     /* subtractions inside the first butterfly */                     \

  999.     but0 = vec_sub(srcV, dstV);                                       \

  1000.     op1  = vec_perm(but0, but0, perm1);                               \

  1001.     but1 = vec_mladd(but0, vprod1, op1);                              \

  1002.     op2  = vec_perm(but1, but1, perm2);                               \

  1003.     but2 = vec_mladd(but1, vprod2, op2);                              \

  1004.     op3  = vec_perm(but2, but2, perm3);                               \

  1005.     res  = vec_mladd(but2, vprod3, op3);                              \

  1006.     }

  1007.     ONEITERBUTTERFLY(0, temp0);

  1008.     ONEITERBUTTERFLY(1, temp1);

  1009.     ONEITERBUTTERFLY(2, temp2);

  1010.     ONEITERBUTTERFLY(3, temp3);

  1011.     ONEITERBUTTERFLY(4, temp4);

  1012.     ONEITERBUTTERFLY(5, temp5);

  1013.     ONEITERBUTTERFLY(6, temp6);

  1014.     ONEITERBUTTERFLY(7, temp7);

  1015.     }

  1016. #undef ONEITERBUTTERFLY

  1017.     {

  1018.     register vector signed int vsum;

  1019.     register vector signed short line0 = vec_add(temp0, temp1);

  1020.     register vector signed short line1 = vec_sub(temp0, temp1);

  1021.     register vector signed short line2 = vec_add(temp2, temp3);

  1022.     register vector signed short line3 = vec_sub(temp2, temp3);

  1023.     register vector signed short line4 = vec_add(temp4, temp5);

  1024.     register vector signed short line5 = vec_sub(temp4, temp5);

  1025.     register vector signed short line6 = vec_add(temp6, temp7);

  1026.     register vector signed short line7 = vec_sub(temp6, temp7);

  1027. 

  1028.     register vector signed short line0B = vec_add(line0, line2);

  1029.     register vector signed short line2B = vec_sub(line0, line2);

  1030.     register vector signed short line1B = vec_add(line1, line3);

  1031.     register vector signed short line3B = vec_sub(line1, line3);

  1032.     register vector signed short line4B = vec_add(line4, line6);

  1033.     register vector signed short line6B = vec_sub(line4, line6);

  1034.     register vector signed short line5B = vec_add(line5, line7);

  1035.     register vector signed short line7B = vec_sub(line5, line7);

  1036. 

  1037.     register vector signed short line0C = vec_add(line0B, line4B);

  1038.     register vector signed short line4C = vec_sub(line0B, line4B);

  1039.     register vector signed short line1C = vec_add(line1B, line5B);

  1040.     register vector signed short line5C = vec_sub(line1B, line5B);

  1041.     register vector signed short line2C = vec_add(line2B, line6B);

  1042.     register vector signed short line6C = vec_sub(line2B, line6B);

  1043.     register vector signed short line3C = vec_add(line3B, line7B);

  1044.     register vector signed short line7C = vec_sub(line3B, line7B);

  1045. 

  1046.     vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));

  1047.     vsum = vec_sum4s(vec_abs(line1C), vsum);

  1048.     vsum = vec_sum4s(vec_abs(line2C), vsum);

  1049.     vsum = vec_sum4s(vec_abs(line3C), vsum);

  1050.     vsum = vec_sum4s(vec_abs(line4C), vsum);

  1051.     vsum = vec_sum4s(vec_abs(line5C), vsum);

  1052.     vsum = vec_sum4s(vec_abs(line6C), vsum);

  1053.     vsum = vec_sum4s(vec_abs(line7C), vsum);

  1054.     vsum = vec_sums(vsum, (vector signed int)vzero);

  1055.     vsum = vec_splat(vsum, 3);

  1056.     vec_ste(vsum, 0, &sum);

  1057.     }

  1058.     return sum;

  1059. }

  1060. 

  1061. /*

  1062. 16x8 works with 16 elements; it allows to avoid replicating loads, and

  1063. give the compiler more rooms for scheduling.  It's only used from

  1064. inside hadamard8_diff16_altivec.

  1065. 

  1066. Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has a LOT

  1067. of spill code, it seems gcc (unlike xlc) cannot keep everything in registers

  1068. by itself. The following code include hand-made registers allocation. It's not

  1069. clean, but on a 7450 the resulting code is much faster (best case fall from

  1070. 700+ cycles to 550).

  1071. 

  1072. xlc doesn't add spill code, but it doesn't know how to schedule for the 7450,

  1073. and its code isn't much faster than gcc-3.3 on the 7450 (but uses 25% less

  1074. instructions...)

  1075. 

  1076. On the 970, the hand-made RA is still a win (around 690 vs. around 780), but

  1077. xlc goes to around 660 on the regular C code...

  1078. */

  1079. 

  1080. static int hadamard8_diff16x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h) {

  1081.     int sum;

  1082.     register vector signed short

  1083.         temp0 __asm__ ("v0"),

  1084.         temp1 __asm__ ("v1"),

  1085.         temp2 __asm__ ("v2"),

  1086.         temp3 __asm__ ("v3"),

  1087.         temp4 __asm__ ("v4"),

  1088.         temp5 __asm__ ("v5"),

  1089.         temp6 __asm__ ("v6"),

  1090.         temp7 __asm__ ("v7");

  1091.     register vector signed short

  1092.         temp0S __asm__ ("v8"),

  1093.         temp1S __asm__ ("v9"),

  1094.         temp2S __asm__ ("v10"),

  1095.         temp3S __asm__ ("v11"),

  1096.         temp4S __asm__ ("v12"),

  1097.         temp5S __asm__ ("v13"),

  1098.         temp6S __asm__ ("v14"),

  1099.         temp7S __asm__ ("v15");

  1100.     register const vector unsigned char vzero __asm__ ("v31") =

  1101.         (const vector unsigned char)vec_splat_u8(0);

  1102.     {

  1103.     register const vector signed short vprod1 __asm__ ("v16") =

  1104.         (const vector signed short){ 1,-1, 1,-1, 1,-1, 1,-1 };

  1105.     register const vector signed short vprod2 __asm__ ("v17") =

  1106.         (const vector signed short){ 1, 1,-1,-1, 1, 1,-1,-1 };

  1107.     register const vector signed short vprod3 __asm__ ("v18") =

  1108.         (const vector signed short){ 1, 1, 1, 1,-1,-1,-1,-1 };

  1109.     register const vector unsigned char perm1 __asm__ ("v19") =

  1110.         (const vector unsigned char)

  1111.         {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,

  1112.          0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D};

  1113.     register const vector unsigned char perm2 __asm__ ("v20") =

  1114.         (const vector unsigned char)

  1115.         {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,

  1116.          0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B};

  1117.     register const vector unsigned char perm3 __asm__ ("v21") =

  1118.         (const vector unsigned char)

  1119.         {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,

  1120.          0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};

  1121. 

  1122. #define ONEITERBUTTERFLY(i, res1, res2)                               \

  1123.     {                                                                 \

  1124.     register vector unsigned char src1 __asm__ ("v22"),               \

  1125.                                   src2 __asm__ ("v23"),               \

  1126.                                   dst1 __asm__ ("v24"),               \

  1127.                                   dst2 __asm__ ("v25"),               \

  1128.                                   srcO __asm__ ("v22"),               \

  1129.                                   dstO __asm__ ("v23");               \

  1130.                                                                       \

  1131.     register vector signed short  srcV  __asm__ ("v24"),              \

  1132.                                   dstV  __asm__ ("v25"),              \

  1133.                                   srcW  __asm__ ("v26"),              \

  1134.                                   dstW  __asm__ ("v27"),              \

  1135.                                   but0  __asm__ ("v28"),              \

  1136.                                   but0S __asm__ ("v29"),              \

  1137.                                   op1   __asm__ ("v30"),              \

  1138.                                   but1  __asm__ ("v22"),              \

  1139.                                   op1S  __asm__ ("v23"),              \

  1140.                                   but1S __asm__ ("v24"),              \

  1141.                                   op2   __asm__ ("v25"),              \

  1142.                                   but2  __asm__ ("v26"),              \

  1143.                                   op2S  __asm__ ("v27"),              \

  1144.                                   but2S __asm__ ("v28"),              \

  1145.                                   op3   __asm__ ("v29"),              \

  1146.                                   op3S  __asm__ ("v30");              \

  1147.                                                                       \

  1148.     src1 = vec_ld(stride * i, src);                                   \

  1149.     src2 = vec_ld((stride * i) + 16, src);                            \

  1150.     srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src));           \

  1151.     dst1 = vec_ld(stride * i, dst);                                   \

  1152.     dst2 = vec_ld((stride * i) + 16, dst);                            \

  1153.     dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst));           \

  1154.     /* promote the unsigned chars to signed shorts */                 \

  1155.     srcV = (vector signed short)vec_mergeh((vector signed char)vzero, \

  1156.            (vector signed char)srcO);                                 \

  1157.     dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \

  1158.            (vector signed char)dstO);                                 \

  1159.     srcW = (vector signed short)vec_mergel((vector signed char)vzero, \

  1160.            (vector signed char)srcO);                                 \

  1161.     dstW = (vector signed short)vec_mergel((vector signed char)vzero, \

  1162.            (vector signed char)dstO);                                 \

  1163.     /* subtractions inside the first butterfly */                     \

  1164.     but0 = vec_sub(srcV, dstV);                                       \

  1165.     but0S = vec_sub(srcW, dstW);                                      \

  1166.     op1 = vec_perm(but0, but0, perm1);                                \

  1167.     but1 = vec_mladd(but0, vprod1, op1);                              \

  1168.     op1S = vec_perm(but0S, but0S, perm1);                             \

  1169.     but1S = vec_mladd(but0S, vprod1, op1S);                           \

  1170.     op2 = vec_perm(but1, but1, perm2);                                \

  1171.     but2 = vec_mladd(but1, vprod2, op2);                              \

  1172.     op2S = vec_perm(but1S, but1S, perm2);                             \

  1173.     but2S = vec_mladd(but1S, vprod2, op2S);                           \

  1174.     op3 = vec_perm(but2, but2, perm3);                                \

  1175.     res1 = vec_mladd(but2, vprod3, op3);                              \

  1176.     op3S = vec_perm(but2S, but2S, perm3);                             \

  1177.     res2 = vec_mladd(but2S, vprod3, op3S);                            \

  1178.     }

  1179.     ONEITERBUTTERFLY(0, temp0, temp0S);

  1180.     ONEITERBUTTERFLY(1, temp1, temp1S);

  1181.     ONEITERBUTTERFLY(2, temp2, temp2S);

  1182.     ONEITERBUTTERFLY(3, temp3, temp3S);

  1183.     ONEITERBUTTERFLY(4, temp4, temp4S);

  1184.     ONEITERBUTTERFLY(5, temp5, temp5S);

  1185.     ONEITERBUTTERFLY(6, temp6, temp6S);

  1186.     ONEITERBUTTERFLY(7, temp7, temp7S);

  1187.     }

  1188. #undef ONEITERBUTTERFLY

  1189.     {

  1190.     register vector signed int vsum;

  1191.     register vector signed short line0S, line1S, line2S, line3S, line4S,

  1192.                                  line5S, line6S, line7S, line0BS,line2BS,

  1193.                                  line1BS,line3BS,line4BS,line6BS,line5BS,

  1194.                                  line7BS,line0CS,line4CS,line1CS,line5CS,

  1195.                                  line2CS,line6CS,line3CS,line7CS;

  1196. 

  1197.     register vector signed short line0 = vec_add(temp0, temp1);

  1198.     register vector signed short line1 = vec_sub(temp0, temp1);

  1199.     register vector signed short line2 = vec_add(temp2, temp3);

  1200.     register vector signed short line3 = vec_sub(temp2, temp3);

  1201.     register vector signed short line4 = vec_add(temp4, temp5);

  1202.     register vector signed short line5 = vec_sub(temp4, temp5);

  1203.     register vector signed short line6 = vec_add(temp6, temp7);

  1204.     register vector signed short line7 = vec_sub(temp6, temp7);

  1205. 

  1206.     register vector signed short line0B = vec_add(line0, line2);

  1207.     register vector signed short line2B = vec_sub(line0, line2);

  1208.     register vector signed short line1B = vec_add(line1, line3);

  1209.     register vector signed short line3B = vec_sub(line1, line3);

  1210.     register vector signed short line4B = vec_add(line4, line6);

  1211.     register vector signed short line6B = vec_sub(line4, line6);

  1212.     register vector signed short line5B = vec_add(line5, line7);

  1213.     register vector signed short line7B = vec_sub(line5, line7);

  1214. 

  1215.     register vector signed short line0C = vec_add(line0B, line4B);

  1216.     register vector signed short line4C = vec_sub(line0B, line4B);

  1217.     register vector signed short line1C = vec_add(line1B, line5B);

  1218.     register vector signed short line5C = vec_sub(line1B, line5B);

  1219.     register vector signed short line2C = vec_add(line2B, line6B);

  1220.     register vector signed short line6C = vec_sub(line2B, line6B);

  1221.     register vector signed short line3C = vec_add(line3B, line7B);

  1222.     register vector signed short line7C = vec_sub(line3B, line7B);

  1223. 

  1224.     vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));

  1225.     vsum = vec_sum4s(vec_abs(line1C), vsum);

  1226.     vsum = vec_sum4s(vec_abs(line2C), vsum);

  1227.     vsum = vec_sum4s(vec_abs(line3C), vsum);

  1228.     vsum = vec_sum4s(vec_abs(line4C), vsum);

  1229.     vsum = vec_sum4s(vec_abs(line5C), vsum);

  1230.     vsum = vec_sum4s(vec_abs(line6C), vsum);

  1231.     vsum = vec_sum4s(vec_abs(line7C), vsum);

  1232. 

  1233.     line0S = vec_add(temp0S, temp1S);

  1234.     line1S = vec_sub(temp0S, temp1S);

  1235.     line2S = vec_add(temp2S, temp3S);

  1236.     line3S = vec_sub(temp2S, temp3S);

  1237.     line4S = vec_add(temp4S, temp5S);

  1238.     line5S = vec_sub(temp4S, temp5S);

  1239.     line6S = vec_add(temp6S, temp7S);

  1240.     line7S = vec_sub(temp6S, temp7S);

  1241. 

  1242.     line0BS = vec_add(line0S, line2S);

  1243.     line2BS = vec_sub(line0S, line2S);

  1244.     line1BS = vec_add(line1S, line3S);

  1245.     line3BS = vec_sub(line1S, line3S);

  1246.     line4BS = vec_add(line4S, line6S);

  1247.     line6BS = vec_sub(line4S, line6S);

  1248.     line5BS = vec_add(line5S, line7S);

  1249.     line7BS = vec_sub(line5S, line7S);

  1250. 

  1251.     line0CS = vec_add(line0BS, line4BS);

  1252.     line4CS = vec_sub(line0BS, line4BS);

  1253.     line1CS = vec_add(line1BS, line5BS);

  1254.     line5CS = vec_sub(line1BS, line5BS);

  1255.     line2CS = vec_add(line2BS, line6BS);

  1256.     line6CS = vec_sub(line2BS, line6BS);

  1257.     line3CS = vec_add(line3BS, line7BS);

  1258.     line7CS = vec_sub(line3BS, line7BS);

  1259. 

  1260.     vsum = vec_sum4s(vec_abs(line0CS), vsum);

  1261.     vsum = vec_sum4s(vec_abs(line1CS), vsum);

  1262.     vsum = vec_sum4s(vec_abs(line2CS), vsum);

  1263.     vsum = vec_sum4s(vec_abs(line3CS), vsum);

  1264.     vsum = vec_sum4s(vec_abs(line4CS), vsum);

  1265.     vsum = vec_sum4s(vec_abs(line5CS), vsum);

  1266.     vsum = vec_sum4s(vec_abs(line6CS), vsum);

  1267.     vsum = vec_sum4s(vec_abs(line7CS), vsum);

  1268.     vsum = vec_sums(vsum, (vector signed int)vzero);

  1269.     vsum = vec_splat(vsum, 3);

  1270.     vec_ste(vsum, 0, &sum);

  1271.     }

  1272.     return sum;

  1273. }

  1274. 

  1275. static int hadamard8_diff16_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){

  1276.     int score;

  1277.     score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8);

  1278.     if (h==16) {

  1279.         dst += 8*stride;

  1280.         src += 8*stride;

  1281.         score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8);

  1282.     }

  1283.     return score;

  1284. }

  1285. 

  1286. static void vorbis_inverse_coupling_altivec(float *mag, float *ang,

  1287.                                             int blocksize)

  1288. {

  1289.     int i;

  1290.     vector float m, a;

  1291.     vector bool int t0, t1;

  1292.     const vector unsigned int v_31 = //XXX

  1293.         vec_add(vec_add(vec_splat_u32(15),vec_splat_u32(15)),vec_splat_u32(1));

  1294.     for (i = 0; i < blocksize; i += 4) {

  1295.         m = vec_ld(0, mag+i);

  1296.         a = vec_ld(0, ang+i);

  1297.         t0 = vec_cmple(m, (vector float)vec_splat_u32(0));

  1298.         t1 = vec_cmple(a, (vector float)vec_splat_u32(0));

  1299.         a = vec_xor(a, (vector float) vec_sl((vector unsigned int)t0, v_31));

  1300.         t0 = (vector bool int)vec_and(a, t1);

  1301.         t1 = (vector bool int)vec_andc(a, t1);

  1302.         a = vec_sub(m, (vector float)t1);

  1303.         m = vec_add(m, (vector float)t0);

  1304.         vec_stl(a, 0, ang+i);

  1305.         vec_stl(m, 0, mag+i);

  1306.     }

  1307. }

  1308. 

  1309. /* next one assumes that ((line_size % 8) == 0) */

  1310. static void avg_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  1311. {

  1312.     register int i;

  1313.     register vector unsigned char pixelsv1, pixelsv2, pixelsavg;

  1314.     register vector unsigned char blockv, temp1, temp2, blocktemp;

  1315.     register vector unsigned short pixelssum1, pixelssum2, temp3;

  1316. 

  1317.     register const vector unsigned char vczero = (const vector unsigned char)

  1318.                                         vec_splat_u8(0);

  1319.     register const vector unsigned short vctwo = (const vector unsigned short)

  1320.                                         vec_splat_u16(2);

  1321. 

  1322.     temp1 = vec_ld(0, pixels);

  1323.     temp2 = vec_ld(16, pixels);

  1324.     pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));

  1325.     if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {

  1326.         pixelsv2 = temp2;

  1327.     } else {

  1328.         pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));

  1329.     }

  1330.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  1331.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

  1332.     pixelssum1 = vec_add((vector unsigned short)pixelsv1,

  1333.                          (vector unsigned short)pixelsv2);

  1334.     pixelssum1 = vec_add(pixelssum1, vctwo);

  1335. 

  1336.     for (i = 0; i < h ; i++) {

  1337.         int rightside = ((unsigned long)block & 0x0000000F);

  1338.         blockv = vec_ld(0, block);

  1339. 

  1340.         temp1 = vec_ld(line_size, pixels);

  1341.         temp2 = vec_ld(line_size + 16, pixels);

  1342.         pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));

  1343.         if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {

  1344.             pixelsv2 = temp2;

  1345.         } else {

  1346.             pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));

  1347.         }

  1348. 

  1349.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  1350.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  1351.         pixelssum2 = vec_add((vector unsigned short)pixelsv1,

  1352.                              (vector unsigned short)pixelsv2);

  1353.         temp3 = vec_add(pixelssum1, pixelssum2);

  1354.         temp3 = vec_sra(temp3, vctwo);

  1355.         pixelssum1 = vec_add(pixelssum2, vctwo);

  1356.         pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);

  1357. 

  1358.         if (rightside) {

  1359.             blocktemp = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));

  1360.         } else {

  1361.             blocktemp = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));

  1362.         }

  1363. 

  1364.         blockv = vec_avg(blocktemp, blockv);

  1365.         vec_st(blockv, 0, block);

  1366. 

  1367.         block += line_size;

  1368.         pixels += line_size;

  1369.     }

  1370. }

  1371. 

  1372. void ff_dsputil_init_altivec(DSPContext* c, AVCodecContext *avctx)

  1373. {

  1374.     const int high_bit_depth = avctx->bits_per_raw_sample > 8;

  1375. 

  1376.     c->pix_abs[0][1] = sad16_x2_altivec;

  1377.     c->pix_abs[0][2] = sad16_y2_altivec;

  1378.     c->pix_abs[0][3] = sad16_xy2_altivec;

  1379.     c->pix_abs[0][0] = sad16_altivec;

  1380.     c->pix_abs[1][0] = sad8_altivec;

  1381.     c->sad[0]= sad16_altivec;

  1382.     c->sad[1]= sad8_altivec;

  1383.     c->pix_norm1 = pix_norm1_altivec;

  1384.     c->sse[1]= sse8_altivec;

  1385.     c->sse[0]= sse16_altivec;

  1386.     c->pix_sum = pix_sum_altivec;

  1387.     c->diff_pixels = diff_pixels_altivec;

  1388.     c->add_bytes= add_bytes_altivec;

  1389.     if (!high_bit_depth) {

  1390.     c->get_pixels = get_pixels_altivec;

  1391.     c->clear_block = clear_block_altivec;

  1392.     c->put_pixels_tab[0][0] = ff_put_pixels16_altivec;

  1393.     /* the two functions do the same thing, so use the same code */

  1394.     c->put_no_rnd_pixels_tab[0][0] = ff_put_pixels16_altivec;

  1395.     c->avg_pixels_tab[0][0] = ff_avg_pixels16_altivec;

  1396.     c->avg_pixels_tab[1][0] = avg_pixels8_altivec;

  1397.     c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec;

  1398.     c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec;

  1399.     c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;

  1400.     c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec;

  1401.     c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;

  1402.     }

  1403. 

  1404.     c->hadamard8_diff[0] = hadamard8_diff16_altivec;

  1405.     c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;

  1406.     if (CONFIG_VORBIS_DECODER)

  1407.         c->vorbis_inverse_coupling = vorbis_inverse_coupling_altivec;

  1408. }