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FFmpeg/libavcodec/ppc/dsputil_altivec.c

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  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 FFmpeg.

  7.  *

  8.  * FFmpeg 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.  * FFmpeg 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 FFmpeg; 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 "libavcodec/dsputil.h"

  28. #include "util_altivec.h"

  29. #include "types_altivec.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 *tv;

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

  39.     vector unsigned int sad;

  40.     vector signed int sumdiffs;

  41. 

  42.     s = 0;

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

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

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

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

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

  48.         tv = (vector unsigned char *) pix1;

  49.         pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));

  50. 

  51.         tv = (vector unsigned char *) &pix2[0];

  52.         pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));

  53. 

  54.         tv = (vector unsigned char *) &pix2[1];

  55.         pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1]));

  56. 

  57.         /* Calculate the average vector */

  58.         avgv = vec_avg(pix2v, pix2iv);

  59. 

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

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

  62. 

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

  64.         sad = vec_sum4s(t5, sad);

  65. 

  66.         pix1 += line_size;

  67.         pix2 += line_size;

  68.     }

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

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

  71.     sumdiffs = vec_splat(sumdiffs, 3);

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

  73. 

  74.     return s;

  75. }

  76. 

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

  78. {

  79.     int i;

  80.     int s;

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

  82.     vector unsigned char *tv;

  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.     tv = (vector unsigned char *) &pix2[0];

  99.     pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));

  100. 

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

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

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

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

  105.         tv = (vector unsigned char *) pix1;

  106.         pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));

  107. 

  108.         tv = (vector unsigned char *) &pix3[0];

  109.         pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0]));

  110. 

  111.         /* Calculate the average vector */

  112.         avgv = vec_avg(pix2v, pix3v);

  113. 

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

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

  116. 

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

  118.         sad = vec_sum4s(t5, sad);

  119. 

  120.         pix1 += line_size;

  121.         pix2v = pix3v;

  122.         pix3 += line_size;

  123. 

  124.     }

  125. 

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

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

  128.     sumdiffs = vec_splat(sumdiffs, 3);

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

  130.     return s;

  131. }

  132. 

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

  134. {

  135.     int i;

  136.     int s;

  137.     uint8_t *pix3 = pix2 + line_size;

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

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

  140.     vector unsigned char *tv, avgv, t5;

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

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

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

  144.     vector unsigned short avghv, avglv;

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

  146.     vector unsigned int sad;

  147.     vector signed int sumdiffs;

  148. 

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

  150. 

  151.     s = 0;

  152. 

  153.     /* 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

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

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

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

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

  159.        Split the pixel vectors into shorts */

  160.     tv = (vector unsigned char *) &pix2[0];

  161.     pix2v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[0]));

  162. 

  163.     tv = (vector unsigned char *) &pix2[1];

  164.     pix2iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix2[1]));

  165. 

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

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

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

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

  170.     t1 = vec_add(pix2hv, pix2ihv);

  171.     t2 = vec_add(pix2lv, pix2ilv);

  172. 

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

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

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

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

  177.         tv = (vector unsigned char *) pix1;

  178.         pix1v = vec_perm(tv[0], tv[1], vec_lvsl(0, pix1));

  179. 

  180.         tv = (vector unsigned char *) &pix3[0];

  181.         pix3v = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[0]));

  182. 

  183.         tv = (vector unsigned char *) &pix3[1];

  184.         pix3iv = vec_perm(tv[0], tv[1], vec_lvsl(0, &pix3[1]));

  185. 

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

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

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

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

  190.            and do the averaging by hand. */

  191. 

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

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

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

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

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

  197. 

  198.         /* Do the averaging on them */

  199.         t3 = vec_add(pix3hv, pix3ihv);

  200.         t4 = vec_add(pix3lv, pix3ilv);

  201. 

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

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

  204. 

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

  206.         avgv = vec_pack(avghv, avglv);

  207. 

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

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

  210. 

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

  212.         sad = vec_sum4s(t5, sad);

  213. 

  214.         pix1 += line_size;

  215.         pix3 += line_size;

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

  217.         t1 = t3;

  218.         t2 = t4;

  219.     }

  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);

  222.     sumdiffs = vec_splat(sumdiffs, 3);

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

  224. 

  225.     return s;

  226. }

  227. 

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

  229. {

  230.     int i;

  231.     int s;

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

  233.     vector unsigned char perm1, perm2, pix1v_low, pix1v_high, pix2v_low, pix2v_high;

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

  235.     vector unsigned int sad;

  236.     vector signed int sumdiffs;

  237. 

  238.     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 */

  243.         perm1 = vec_lvsl(0, pix1);

  244.         pix1v_high = vec_ld( 0, pix1);

  245.         pix1v_low  = vec_ld(15, pix1);

  246.         perm2 = vec_lvsl(0, pix2);

  247.         pix2v_high = vec_ld( 0, pix2);

  248.         pix2v_low  = vec_ld(15, pix2);

  249.         t1 = vec_perm(pix1v_high, pix1v_low, perm1);

  250.         t2 = vec_perm(pix2v_high, pix2v_low, perm2);

  251. 

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

  253.         t3 = vec_max(t1, t2);

  254.         t4 = vec_min(t1, t2);

  255.         t5 = vec_sub(t3, t4);

  256. 

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

  258.         sad = vec_sum4s(t5, sad);

  259. 

  260.         pix1 += line_size;

  261.         pix2 += line_size;

  262.     }

  263. 

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

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

  266.     sumdiffs = vec_splat(sumdiffs, 3);

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

  268. 

  269.     return s;

  270. }

  271. 

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

  273. {

  274.     int i;

  275.     int s;

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

  277.     vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;

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

  279.     vector unsigned int sad;

  280.     vector signed int sumdiffs;

  281. 

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

  283. 

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

  285. 

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

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

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

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

  290.         perm1 = vec_lvsl(0, pix1);

  291.         pix1v = (vector unsigned char *) pix1;

  292.         perm2 = vec_lvsl(0, pix2);

  293.         pix2v = (vector unsigned char *) pix2;

  294.         t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear);

  295.         t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear);

  296. 

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

  298.         t3 = vec_max(t1, t2);

  299.         t4 = vec_min(t1, t2);

  300.         t5 = vec_sub(t3, t4);

  301. 

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

  303.         sad = vec_sum4s(t5, sad);

  304. 

  305.         pix1 += line_size;

  306.         pix2 += line_size;

  307.     }

  308. 

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

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

  311.     sumdiffs = vec_splat(sumdiffs, 3);

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

  313. 

  314.     return s;

  315. }

  316. 

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

  318. {

  319.     int i;

  320.     int s;

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

  322.     vector unsigned char *tv;

  323.     vector unsigned char pixv;

  324.     vector unsigned int sv;

  325.     vector signed int sum;

  326. 

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

  328. 

  329.     s = 0;

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

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

  332.         tv = (vector unsigned char *) pix;

  333.         pixv = vec_perm(tv[0], tv[1], vec_lvsl(0, pix));

  334. 

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

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

  337. 

  338.         pix += line_size;

  339.     }

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

  341.     sum = vec_sums((vector signed int) sv, (vector signed int) zero);

  342.     sum = vec_splat(sum, 3);

  343.     vec_ste(sum, 0, &s);

  344. 

  345.     return s;

  346. }

  347. 

  348. /**

  349.  * Sum of Squared Errors for a 8x8 block.

  350.  * AltiVec-enhanced.

  351.  * It's the sad8_altivec code above w/ squaring added.

  352.  */

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

  354. {

  355.     int i;

  356.     int s;

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

  358.     vector unsigned char perm1, perm2, permclear, *pix1v, *pix2v;

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

  366. 

  367. 

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

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

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

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

  372.         perm1 = vec_lvsl(0, pix1);

  373.         pix1v = (vector unsigned char *) pix1;

  374.         perm2 = vec_lvsl(0, pix2);

  375.         pix2v = (vector unsigned char *) pix2;

  376.         t1 = vec_and(vec_perm(pix1v[0], pix1v[1], perm1), permclear);

  377.         t2 = vec_and(vec_perm(pix2v[0], pix2v[1], perm2), permclear);

  378. 

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

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

  381. 

  382.         /* Calculate abs differences vector */

  383.         t3 = vec_max(t1, t2);

  384.         t4 = vec_min(t1, t2);

  385.         t5 = vec_sub(t3, t4);

  386. 

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

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

  389. 

  390.         pix1 += line_size;

  391.         pix2 += line_size;

  392.     }

  393. 

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

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

  396.     sumsqr = vec_splat(sumsqr, 3);

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

  398. 

  399.     return s;

  400. }

  401. 

  402. /**

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

  404.  * AltiVec-enhanced.

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

  406.  */

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

  408. {

  409.     int i;

  410.     int s;

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

  412.     vector unsigned char perm1, perm2, *pix1v, *pix2v;

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

  414.     vector unsigned int sum;

  415.     vector signed int sumsqr;

  416. 

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

  418. 

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

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

  421.         perm1 = vec_lvsl(0, pix1);

  422.         pix1v = (vector unsigned char *) pix1;

  423.         perm2 = vec_lvsl(0, pix2);

  424.         pix2v = (vector unsigned char *) pix2;

  425.         t1 = vec_perm(pix1v[0], pix1v[1], perm1);

  426.         t2 = vec_perm(pix2v[0], pix2v[1], perm2);

  427. 

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

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

  430. 

  431.         /* Calculate abs differences vector */

  432.         t3 = vec_max(t1, t2);

  433.         t4 = vec_min(t1, t2);

  434.         t5 = vec_sub(t3, t4);

  435. 

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

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

  438. 

  439.         pix1 += line_size;

  440.         pix2 += line_size;

  441.     }

  442. 

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

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

  445.     sumsqr = vec_splat(sumsqr, 3);

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

  447. 

  448.     return s;

  449. }

  450. 

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

  452. {

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

  454.     vector unsigned char perm, *pixv;

  455.     vector unsigned char t1;

  456.     vector unsigned int sad;

  457.     vector signed int sumdiffs;

  458. 

  459.     int i;

  460.     int s;

  461. 

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

  463. 

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

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

  466.         perm = vec_lvsl(0, pix);

  467.         pixv = (vector unsigned char *) pix;

  468.         t1 = vec_perm(pixv[0], pixv[1], perm);

  469. 

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

  471.         sad = vec_sum4s(t1, sad);

  472. 

  473.         pix += line_size;

  474.     }

  475. 

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

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

  478.     sumdiffs = vec_splat(sumdiffs, 3);

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

  480. 

  481.     return s;

  482. }

  483. 

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

  485. {

  486.     int i;

  487.     vector unsigned char perm, bytes, *pixv;

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

  489.     vector signed short shorts;

  490. 

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

  492.         // Read potentially unaligned pixels.

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

  494.         // but we simply ignore the extras.

  495.         perm = vec_lvsl(0, pixels);

  496.         pixv = (vector unsigned char *) pixels;

  497.         bytes = vec_perm(pixv[0], pixv[1], perm);

  498. 

  499.         // convert the bytes into shorts

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

  501. 

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

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

  504. 

  505.         pixels += line_size;

  506.     }

  507. }

  508. 

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

  510.         const uint8_t *s2, int stride)

  511. {

  512.     int i;

  513.     vector unsigned char perm, bytes, *pixv;

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

  515.     vector signed short shorts1, shorts2;

  516. 

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

  518.         // Read potentially unaligned pixels

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

  520.         // but we simply ignore the extras.

  521.         perm = vec_lvsl(0, s1);

  522.         pixv = (vector unsigned char *) s1;

  523.         bytes = vec_perm(pixv[0], pixv[1], perm);

  524. 

  525.         // convert the bytes into shorts

  526.         shorts1 = (vector signed short)vec_mergeh(zero, bytes);

  527. 

  528.         // Do the same for the second block of pixels

  529.         perm = vec_lvsl(0, s2);

  530.         pixv = (vector unsigned char *) s2;

  531.         bytes = vec_perm(pixv[0], pixv[1], perm);

  532. 

  533.         // convert the bytes into shorts

  534.         shorts2 = (vector signed short)vec_mergeh(zero, bytes);

  535. 

  536.         // Do the subtraction

  537.         shorts1 = vec_sub(shorts1, shorts2);

  538. 

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

  540.         vec_st(shorts1, 0, (vector signed short*)block);

  541. 

  542.         s1 += stride;

  543.         s2 += stride;

  544.         block += 8;

  545. 

  546. 

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

  548.         // unroll.

  549. 

  550.         // Read potentially unaligned pixels

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

  552.         // but we simply ignore the extras.

  553.         perm = vec_lvsl(0, s1);

  554.         pixv = (vector unsigned char *) s1;

  555.         bytes = vec_perm(pixv[0], pixv[1], perm);

  556. 

  557.         // convert the bytes into shorts

  558.         shorts1 = (vector signed short)vec_mergeh(zero, bytes);

  559. 

  560.         // Do the same for the second block of pixels

  561.         perm = vec_lvsl(0, s2);

  562.         pixv = (vector unsigned char *) s2;

  563.         bytes = vec_perm(pixv[0], pixv[1], perm);

  564. 

  565.         // convert the bytes into shorts

  566.         shorts2 = (vector signed short)vec_mergeh(zero, bytes);

  567. 

  568.         // Do the subtraction

  569.         shorts1 = vec_sub(shorts1, shorts2);

  570. 

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

  572.         vec_st(shorts1, 0, (vector signed short*)block);

  573. 

  574.         s1 += stride;

  575.         s2 += stride;

  576.         block += 8;

  577.     }

  578. }

  579. 

  580. 

  581. static void clear_block_altivec(DCTELEM *block) {

  582.     LOAD_ZERO;

  583.     vec_st(zero_s16v,   0, block);

  584.     vec_st(zero_s16v,  16, block);

  585.     vec_st(zero_s16v,  32, block);

  586.     vec_st(zero_s16v,  48, block);

  587.     vec_st(zero_s16v,  64, block);

  588.     vec_st(zero_s16v,  80, block);

  589.     vec_st(zero_s16v,  96, block);

  590.     vec_st(zero_s16v, 112, block);

  591. }

  592. 

  593. 

  594. static void add_bytes_altivec(uint8_t *dst, uint8_t *src, int w) {

  595.     register int i;

  596.     register vector unsigned char vdst, vsrc;

  597. 

  598.     /* dst and src are 16 bytes-aligned (guaranteed) */

  599.     for (i = 0 ; (i + 15) < w ; i+=16) {

  600.         vdst = vec_ld(i, (unsigned char*)dst);

  601.         vsrc = vec_ld(i, (unsigned char*)src);

  602.         vdst = vec_add(vsrc, vdst);

  603.         vec_st(vdst, i, (unsigned char*)dst);

  604.     }

  605.     /* if w is not a multiple of 16 */

  606.     for (; (i < w) ; i++) {

  607.         dst[i] = src[i];

  608.     }

  609. }

  610. 

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

  612. void put_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  613. {

  614.     register vector unsigned char pixelsv1, pixelsv2;

  615.     register vector unsigned char pixelsv1B, pixelsv2B;

  616.     register vector unsigned char pixelsv1C, pixelsv2C;

  617.     register vector unsigned char pixelsv1D, pixelsv2D;

  618. 

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

  620.     int i;

  621.     register int line_size_2 = line_size << 1;

  622.     register int line_size_3 = line_size + line_size_2;

  623.     register int line_size_4 = line_size << 2;

  624. 

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

  631.         pixelsv1  = vec_ld( 0, pixels);

  632.         pixelsv2  = vec_ld(15, pixels);

  633.         pixelsv1B = vec_ld(line_size, pixels);

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

  635.         pixelsv1C = vec_ld(line_size_2, pixels);

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

  637.         pixelsv1D = vec_ld(line_size_3, pixels);

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

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

  640.                0, (unsigned char*)block);

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

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

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

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

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

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

  647.         pixels+=line_size_4;

  648.         block +=line_size_4;

  649.     }

  650. }

  651. 

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

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

  654. void avg_pixels16_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  655. {

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

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

  658.     int i;

  659. 

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

  661.         pixelsv1 = vec_ld( 0, pixels);

  662.         pixelsv2 = vec_ld(16,pixels);

  663.         blockv = vec_ld(0, block);

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

  665.         blockv = vec_avg(blockv,pixelsv);

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

  667.         pixels+=line_size;

  668.         block +=line_size;

  669.     }

  670. }

  671. 

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

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

  674. {

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

  676.     int i;

  677. 

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

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

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

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

  682. 

  683.        blockv = vec_ld(0, block);

  684.        pixelsv1 = vec_ld( 0, pixels);

  685.        pixelsv2 = vec_ld(16, pixels);

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

  687. 

  688.        if (rightside) {

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

  690.        } else {

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

  692.        }

  693. 

  694.        blockv = vec_avg(blockv, pixelsv);

  695. 

  696.        vec_st(blockv, 0, block);

  697. 

  698.        pixels += line_size;

  699.        block += line_size;

  700.    }

  701. }

  702. 

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

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

  705. {

  706.     register int i;

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

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

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

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

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

  712. 

  713.     temp1 = vec_ld(0, pixels);

  714.     temp2 = vec_ld(16, pixels);

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

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

  717.         pixelsv2 = temp2;

  718.     } else {

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

  720.     }

  721.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  722.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

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

  724.                          (vector unsigned short)pixelsv2);

  725.     pixelssum1 = vec_add(pixelssum1, vctwo);

  726. 

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

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

  729.         blockv = vec_ld(0, block);

  730. 

  731.         temp1 = vec_ld(line_size, pixels);

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

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

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

  735.             pixelsv2 = temp2;

  736.         } else {

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

  738.         }

  739. 

  740.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  741.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

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

  743.                              (vector unsigned short)pixelsv2);

  744.         temp3 = vec_add(pixelssum1, pixelssum2);

  745.         temp3 = vec_sra(temp3, vctwo);

  746.         pixelssum1 = vec_add(pixelssum2, vctwo);

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

  748. 

  749.         if (rightside) {

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

  751.         } else {

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

  753.         }

  754. 

  755.         vec_st(blockv, 0, block);

  756. 

  757.         block += line_size;

  758.         pixels += line_size;

  759.     }

  760. }

  761. 

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

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

  764. {

  765.     register int i;

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

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

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

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

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

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

  772. 

  773.     temp1 = vec_ld(0, pixels);

  774.     temp2 = vec_ld(16, pixels);

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

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

  777.         pixelsv2 = temp2;

  778.     } else {

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

  780.     }

  781.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  782.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

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

  784.                          (vector unsigned short)pixelsv2);

  785.     pixelssum1 = vec_add(pixelssum1, vcone);

  786. 

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

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

  789.         blockv = vec_ld(0, block);

  790. 

  791.         temp1 = vec_ld(line_size, pixels);

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

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

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

  795.             pixelsv2 = temp2;

  796.         } else {

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

  798.         }

  799. 

  800.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  801.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

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

  803.                              (vector unsigned short)pixelsv2);

  804.         temp3 = vec_add(pixelssum1, pixelssum2);

  805.         temp3 = vec_sra(temp3, vctwo);

  806.         pixelssum1 = vec_add(pixelssum2, vcone);

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

  808. 

  809.         if (rightside) {

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

  811.         } else {

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

  813.         }

  814. 

  815.         vec_st(blockv, 0, block);

  816. 

  817.         block += line_size;

  818.         pixels += line_size;

  819.     }

  820. }

  821. 

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

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

  824. {

  825.     register int i;

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

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

  828.     register vector unsigned short temp3, temp4,

  829.         pixelssum1, pixelssum2, pixelssum3, pixelssum4;

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

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

  832. 

  833.     temp1 = vec_ld(0, pixels);

  834.     temp2 = vec_ld(16, pixels);

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

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

  837.         pixelsv2 = temp2;

  838.     } else {

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

  840.     }

  841.     pixelsv3 = vec_mergel(vczero, pixelsv1);

  842.     pixelsv4 = vec_mergel(vczero, pixelsv2);

  843.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  844.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

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

  846.                          (vector unsigned short)pixelsv4);

  847.     pixelssum3 = vec_add(pixelssum3, vctwo);

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

  849.                          (vector unsigned short)pixelsv2);

  850.     pixelssum1 = vec_add(pixelssum1, vctwo);

  851. 

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

  853.         blockv = vec_ld(0, block);

  854. 

  855.         temp1 = vec_ld(line_size, pixels);

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

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

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

  859.             pixelsv2 = temp2;

  860.         } else {

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

  862.         }

  863. 

  864.         pixelsv3 = vec_mergel(vczero, pixelsv1);

  865.         pixelsv4 = vec_mergel(vczero, pixelsv2);

  866.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  867.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  868. 

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

  870.                              (vector unsigned short)pixelsv4);

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

  872.                              (vector unsigned short)pixelsv2);

  873.         temp4 = vec_add(pixelssum3, pixelssum4);

  874.         temp4 = vec_sra(temp4, vctwo);

  875.         temp3 = vec_add(pixelssum1, pixelssum2);

  876.         temp3 = vec_sra(temp3, vctwo);

  877. 

  878.         pixelssum3 = vec_add(pixelssum4, vctwo);

  879.         pixelssum1 = vec_add(pixelssum2, vctwo);

  880. 

  881.         blockv = vec_packsu(temp3, temp4);

  882. 

  883.         vec_st(blockv, 0, block);

  884. 

  885.         block += line_size;

  886.         pixels += line_size;

  887.     }

  888. }

  889. 

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

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

  892. {

  893.     register int i;

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

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

  896.     register vector unsigned short temp3, temp4,

  897.         pixelssum1, pixelssum2, pixelssum3, pixelssum4;

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

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

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

  901. 

  902.     temp1 = vec_ld(0, pixels);

  903.     temp2 = vec_ld(16, pixels);

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

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

  906.         pixelsv2 = temp2;

  907.     } else {

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

  909.     }

  910.     pixelsv3 = vec_mergel(vczero, pixelsv1);

  911.     pixelsv4 = vec_mergel(vczero, pixelsv2);

  912.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  913.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

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

  915.                          (vector unsigned short)pixelsv4);

  916.     pixelssum3 = vec_add(pixelssum3, vcone);

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

  918.                          (vector unsigned short)pixelsv2);

  919.     pixelssum1 = vec_add(pixelssum1, vcone);

  920. 

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

  922.         blockv = vec_ld(0, block);

  923. 

  924.         temp1 = vec_ld(line_size, pixels);

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

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

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

  928.             pixelsv2 = temp2;

  929.         } else {

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

  931.         }

  932. 

  933.         pixelsv3 = vec_mergel(vczero, pixelsv1);

  934.         pixelsv4 = vec_mergel(vczero, pixelsv2);

  935.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  936.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  937. 

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

  939.                              (vector unsigned short)pixelsv4);

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

  941.                              (vector unsigned short)pixelsv2);

  942.         temp4 = vec_add(pixelssum3, pixelssum4);

  943.         temp4 = vec_sra(temp4, vctwo);

  944.         temp3 = vec_add(pixelssum1, pixelssum2);

  945.         temp3 = vec_sra(temp3, vctwo);

  946. 

  947.         pixelssum3 = vec_add(pixelssum4, vcone);

  948.         pixelssum1 = vec_add(pixelssum2, vcone);

  949. 

  950.         blockv = vec_packsu(temp3, temp4);

  951. 

  952.         vec_st(blockv, 0, block);

  953. 

  954.         block += line_size;

  955.         pixels += line_size;

  956.     }

  957. }

  958. 

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

  960.     int sum;

  961.     register const vector unsigned char vzero =

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

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

  964.                                  temp5, temp6, temp7;

  965.     {

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

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

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

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

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

  971.                                                { 1, 1, 1, 1,-1,-1,-1,-1 };

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

  973.         {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,

  974.          0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D};

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

  976.         {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,

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

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

  979.         {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,

  980.          0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};

  981. 

  982. #define ONEITERBUTTERFLY(i, res)                                          \

  983.     {                                                                     \

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

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

  986.     register vector signed short srcV, dstV;                          \

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

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

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

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

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

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

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

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

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

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

  997.            (vector signed char)srcO);                                 \

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

  999.            (vector signed char)dstO);                                 \

  1000.     /* subtractions inside the first butterfly */                     \

  1001.     but0 = vec_sub(srcV, dstV);                                       \

  1002.     op1  = vec_perm(but0, but0, perm1);                               \

  1003.     but1 = vec_mladd(but0, vprod1, op1);                              \

  1004.     op2  = vec_perm(but1, but1, perm2);                               \

  1005.     but2 = vec_mladd(but1, vprod2, op2);                              \

  1006.     op3  = vec_perm(but2, but2, perm3);                               \

  1007.     res  = vec_mladd(but2, vprod3, op3);                              \

  1008.     }

  1009.     ONEITERBUTTERFLY(0, temp0);

  1010.     ONEITERBUTTERFLY(1, temp1);

  1011.     ONEITERBUTTERFLY(2, temp2);

  1012.     ONEITERBUTTERFLY(3, temp3);

  1013.     ONEITERBUTTERFLY(4, temp4);

  1014.     ONEITERBUTTERFLY(5, temp5);

  1015.     ONEITERBUTTERFLY(6, temp6);

  1016.     ONEITERBUTTERFLY(7, temp7);

  1017.     }

  1018. #undef ONEITERBUTTERFLY

  1019.     {

  1020.     register vector signed int vsum;

  1021.     register vector signed short line0 = vec_add(temp0, temp1);

  1022.     register vector signed short line1 = vec_sub(temp0, temp1);

  1023.     register vector signed short line2 = vec_add(temp2, temp3);

  1024.     register vector signed short line3 = vec_sub(temp2, temp3);

  1025.     register vector signed short line4 = vec_add(temp4, temp5);

  1026.     register vector signed short line5 = vec_sub(temp4, temp5);

  1027.     register vector signed short line6 = vec_add(temp6, temp7);

  1028.     register vector signed short line7 = vec_sub(temp6, temp7);

  1029. 

  1030.     register vector signed short line0B = vec_add(line0, line2);

  1031.     register vector signed short line2B = vec_sub(line0, line2);

  1032.     register vector signed short line1B = vec_add(line1, line3);

  1033.     register vector signed short line3B = vec_sub(line1, line3);

  1034.     register vector signed short line4B = vec_add(line4, line6);

  1035.     register vector signed short line6B = vec_sub(line4, line6);

  1036.     register vector signed short line5B = vec_add(line5, line7);

  1037.     register vector signed short line7B = vec_sub(line5, line7);

  1038. 

  1039.     register vector signed short line0C = vec_add(line0B, line4B);

  1040.     register vector signed short line4C = vec_sub(line0B, line4B);

  1041.     register vector signed short line1C = vec_add(line1B, line5B);

  1042.     register vector signed short line5C = vec_sub(line1B, line5B);

  1043.     register vector signed short line2C = vec_add(line2B, line6B);

  1044.     register vector signed short line6C = vec_sub(line2B, line6B);

  1045.     register vector signed short line3C = vec_add(line3B, line7B);

  1046.     register vector signed short line7C = vec_sub(line3B, line7B);

  1047. 

  1048.     vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));

  1049.     vsum = vec_sum4s(vec_abs(line1C), vsum);

  1050.     vsum = vec_sum4s(vec_abs(line2C), vsum);

  1051.     vsum = vec_sum4s(vec_abs(line3C), vsum);

  1052.     vsum = vec_sum4s(vec_abs(line4C), vsum);

  1053.     vsum = vec_sum4s(vec_abs(line5C), vsum);

  1054.     vsum = vec_sum4s(vec_abs(line6C), vsum);

  1055.     vsum = vec_sum4s(vec_abs(line7C), vsum);

  1056.     vsum = vec_sums(vsum, (vector signed int)vzero);

  1057.     vsum = vec_splat(vsum, 3);

  1058.     vec_ste(vsum, 0, &sum);

  1059.     }

  1060.     return sum;

  1061. }

  1062. 

  1063. /*

  1064. 16x8 works with 16 elements; it allows to avoid replicating loads, and

  1065. give the compiler more rooms for scheduling.  It's only used from

  1066. inside hadamard8_diff16_altivec.

  1067. 

  1068. Unfortunately, it seems gcc-3.3 is a bit dumb, and the compiled code has a LOT

  1069. of spill code, it seems gcc (unlike xlc) cannot keep everything in registers

  1070. by itself. The following code include hand-made registers allocation. It's not

  1071. clean, but on a 7450 the resulting code is much faster (best case fall from

  1072. 700+ cycles to 550).

  1073. 

  1074. xlc doesn't add spill code, but it doesn't know how to schedule for the 7450,

  1075. and its code isn't much faster than gcc-3.3 on the 7450 (but uses 25% less

  1076. instructions...)

  1077. 

  1078. On the 970, the hand-made RA is still a win (around 690 vs. around 780), but

  1079. xlc goes to around 660 on the regular C code...

  1080. */

  1081. 

  1082. static int hadamard8_diff16x8_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h) {

  1083.     int sum;

  1084.     register vector signed short

  1085.         temp0 __asm__ ("v0"),

  1086.         temp1 __asm__ ("v1"),

  1087.         temp2 __asm__ ("v2"),

  1088.         temp3 __asm__ ("v3"),

  1089.         temp4 __asm__ ("v4"),

  1090.         temp5 __asm__ ("v5"),

  1091.         temp6 __asm__ ("v6"),

  1092.         temp7 __asm__ ("v7");

  1093.     register vector signed short

  1094.         temp0S __asm__ ("v8"),

  1095.         temp1S __asm__ ("v9"),

  1096.         temp2S __asm__ ("v10"),

  1097.         temp3S __asm__ ("v11"),

  1098.         temp4S __asm__ ("v12"),

  1099.         temp5S __asm__ ("v13"),

  1100.         temp6S __asm__ ("v14"),

  1101.         temp7S __asm__ ("v15");

  1102.     register const vector unsigned char vzero __asm__ ("v31") =

  1103.         (const vector unsigned char)vec_splat_u8(0);

  1104.     {

  1105.     register const vector signed short vprod1 __asm__ ("v16") =

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

  1107.     register const vector signed short vprod2 __asm__ ("v17") =

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

  1109.     register const vector signed short vprod3 __asm__ ("v18") =

  1110.         (const vector signed short){ 1, 1, 1, 1,-1,-1,-1,-1 };

  1111.     register const vector unsigned char perm1 __asm__ ("v19") =

  1112.         (const vector unsigned char)

  1113.         {0x02, 0x03, 0x00, 0x01, 0x06, 0x07, 0x04, 0x05,

  1114.          0x0A, 0x0B, 0x08, 0x09, 0x0E, 0x0F, 0x0C, 0x0D};

  1115.     register const vector unsigned char perm2 __asm__ ("v20") =

  1116.         (const vector unsigned char)

  1117.         {0x04, 0x05, 0x06, 0x07, 0x00, 0x01, 0x02, 0x03,

  1118.          0x0C, 0x0D, 0x0E, 0x0F, 0x08, 0x09, 0x0A, 0x0B};

  1119.     register const vector unsigned char perm3 __asm__ ("v21") =

  1120.         (const vector unsigned char)

  1121.         {0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,

  1122.          0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07};

  1123. 

  1124. #define ONEITERBUTTERFLY(i, res1, res2)                               \

  1125.     {                                                                 \

  1126.     register vector unsigned char src1 __asm__ ("v22"),               \

  1127.                                   src2 __asm__ ("v23"),               \

  1128.                                   dst1 __asm__ ("v24"),               \

  1129.                                   dst2 __asm__ ("v25"),               \

  1130.                                   srcO __asm__ ("v22"),               \

  1131.                                   dstO __asm__ ("v23");               \

  1132.                                                                       \

  1133.     register vector signed short  srcV  __asm__ ("v24"),              \

  1134.                                   dstV  __asm__ ("v25"),              \

  1135.                                   srcW  __asm__ ("v26"),              \

  1136.                                   dstW  __asm__ ("v27"),              \

  1137.                                   but0  __asm__ ("v28"),              \

  1138.                                   but0S __asm__ ("v29"),              \

  1139.                                   op1   __asm__ ("v30"),              \

  1140.                                   but1  __asm__ ("v22"),              \

  1141.                                   op1S  __asm__ ("v23"),              \

  1142.                                   but1S __asm__ ("v24"),              \

  1143.                                   op2   __asm__ ("v25"),              \

  1144.                                   but2  __asm__ ("v26"),              \

  1145.                                   op2S  __asm__ ("v27"),              \

  1146.                                   but2S __asm__ ("v28"),              \

  1147.                                   op3   __asm__ ("v29"),              \

  1148.                                   op3S  __asm__ ("v30");              \

  1149.                                                                       \

  1150.     src1 = vec_ld(stride * i, src);                                   \

  1151.     src2 = vec_ld((stride * i) + 16, src);                            \

  1152.     srcO = vec_perm(src1, src2, vec_lvsl(stride * i, src));           \

  1153.     dst1 = vec_ld(stride * i, dst);                                   \

  1154.     dst2 = vec_ld((stride * i) + 16, dst);                            \

  1155.     dstO = vec_perm(dst1, dst2, vec_lvsl(stride * i, dst));           \

  1156.     /* promote the unsigned chars to signed shorts */                 \

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

  1158.            (vector signed char)srcO);                                 \

  1159.     dstV = (vector signed short)vec_mergeh((vector signed char)vzero, \

  1160.            (vector signed char)dstO);                                 \

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

  1162.            (vector signed char)srcO);                                 \

  1163.     dstW = (vector signed short)vec_mergel((vector signed char)vzero, \

  1164.            (vector signed char)dstO);                                 \

  1165.     /* subtractions inside the first butterfly */                     \

  1166.     but0 = vec_sub(srcV, dstV);                                       \

  1167.     but0S = vec_sub(srcW, dstW);                                      \

  1168.     op1 = vec_perm(but0, but0, perm1);                                \

  1169.     but1 = vec_mladd(but0, vprod1, op1);                              \

  1170.     op1S = vec_perm(but0S, but0S, perm1);                             \

  1171.     but1S = vec_mladd(but0S, vprod1, op1S);                           \

  1172.     op2 = vec_perm(but1, but1, perm2);                                \

  1173.     but2 = vec_mladd(but1, vprod2, op2);                              \

  1174.     op2S = vec_perm(but1S, but1S, perm2);                             \

  1175.     but2S = vec_mladd(but1S, vprod2, op2S);                           \

  1176.     op3 = vec_perm(but2, but2, perm3);                                \

  1177.     res1 = vec_mladd(but2, vprod3, op3);                              \

  1178.     op3S = vec_perm(but2S, but2S, perm3);                             \

  1179.     res2 = vec_mladd(but2S, vprod3, op3S);                            \

  1180.     }

  1181.     ONEITERBUTTERFLY(0, temp0, temp0S);

  1182.     ONEITERBUTTERFLY(1, temp1, temp1S);

  1183.     ONEITERBUTTERFLY(2, temp2, temp2S);

  1184.     ONEITERBUTTERFLY(3, temp3, temp3S);

  1185.     ONEITERBUTTERFLY(4, temp4, temp4S);

  1186.     ONEITERBUTTERFLY(5, temp5, temp5S);

  1187.     ONEITERBUTTERFLY(6, temp6, temp6S);

  1188.     ONEITERBUTTERFLY(7, temp7, temp7S);

  1189.     }

  1190. #undef ONEITERBUTTERFLY

  1191.     {

  1192.     register vector signed int vsum;

  1193.     register vector signed short line0S, line1S, line2S, line3S, line4S,

  1194.                                  line5S, line6S, line7S, line0BS,line2BS,

  1195.                                  line1BS,line3BS,line4BS,line6BS,line5BS,

  1196.                                  line7BS,line0CS,line4CS,line1CS,line5CS,

  1197.                                  line2CS,line6CS,line3CS,line7CS;

  1198. 

  1199.     register vector signed short line0 = vec_add(temp0, temp1);

  1200.     register vector signed short line1 = vec_sub(temp0, temp1);

  1201.     register vector signed short line2 = vec_add(temp2, temp3);

  1202.     register vector signed short line3 = vec_sub(temp2, temp3);

  1203.     register vector signed short line4 = vec_add(temp4, temp5);

  1204.     register vector signed short line5 = vec_sub(temp4, temp5);

  1205.     register vector signed short line6 = vec_add(temp6, temp7);

  1206.     register vector signed short line7 = vec_sub(temp6, temp7);

  1207. 

  1208.     register vector signed short line0B = vec_add(line0, line2);

  1209.     register vector signed short line2B = vec_sub(line0, line2);

  1210.     register vector signed short line1B = vec_add(line1, line3);

  1211.     register vector signed short line3B = vec_sub(line1, line3);

  1212.     register vector signed short line4B = vec_add(line4, line6);

  1213.     register vector signed short line6B = vec_sub(line4, line6);

  1214.     register vector signed short line5B = vec_add(line5, line7);

  1215.     register vector signed short line7B = vec_sub(line5, line7);

  1216. 

  1217.     register vector signed short line0C = vec_add(line0B, line4B);

  1218.     register vector signed short line4C = vec_sub(line0B, line4B);

  1219.     register vector signed short line1C = vec_add(line1B, line5B);

  1220.     register vector signed short line5C = vec_sub(line1B, line5B);

  1221.     register vector signed short line2C = vec_add(line2B, line6B);

  1222.     register vector signed short line6C = vec_sub(line2B, line6B);

  1223.     register vector signed short line3C = vec_add(line3B, line7B);

  1224.     register vector signed short line7C = vec_sub(line3B, line7B);

  1225. 

  1226.     vsum = vec_sum4s(vec_abs(line0C), vec_splat_s32(0));

  1227.     vsum = vec_sum4s(vec_abs(line1C), vsum);

  1228.     vsum = vec_sum4s(vec_abs(line2C), vsum);

  1229.     vsum = vec_sum4s(vec_abs(line3C), vsum);

  1230.     vsum = vec_sum4s(vec_abs(line4C), vsum);

  1231.     vsum = vec_sum4s(vec_abs(line5C), vsum);

  1232.     vsum = vec_sum4s(vec_abs(line6C), vsum);

  1233.     vsum = vec_sum4s(vec_abs(line7C), vsum);

  1234. 

  1235.     line0S = vec_add(temp0S, temp1S);

  1236.     line1S = vec_sub(temp0S, temp1S);

  1237.     line2S = vec_add(temp2S, temp3S);

  1238.     line3S = vec_sub(temp2S, temp3S);

  1239.     line4S = vec_add(temp4S, temp5S);

  1240.     line5S = vec_sub(temp4S, temp5S);

  1241.     line6S = vec_add(temp6S, temp7S);

  1242.     line7S = vec_sub(temp6S, temp7S);

  1243. 

  1244.     line0BS = vec_add(line0S, line2S);

  1245.     line2BS = vec_sub(line0S, line2S);

  1246.     line1BS = vec_add(line1S, line3S);

  1247.     line3BS = vec_sub(line1S, line3S);

  1248.     line4BS = vec_add(line4S, line6S);

  1249.     line6BS = vec_sub(line4S, line6S);

  1250.     line5BS = vec_add(line5S, line7S);

  1251.     line7BS = vec_sub(line5S, line7S);

  1252. 

  1253.     line0CS = vec_add(line0BS, line4BS);

  1254.     line4CS = vec_sub(line0BS, line4BS);

  1255.     line1CS = vec_add(line1BS, line5BS);

  1256.     line5CS = vec_sub(line1BS, line5BS);

  1257.     line2CS = vec_add(line2BS, line6BS);

  1258.     line6CS = vec_sub(line2BS, line6BS);

  1259.     line3CS = vec_add(line3BS, line7BS);

  1260.     line7CS = vec_sub(line3BS, line7BS);

  1261. 

  1262.     vsum = vec_sum4s(vec_abs(line0CS), vsum);

  1263.     vsum = vec_sum4s(vec_abs(line1CS), vsum);

  1264.     vsum = vec_sum4s(vec_abs(line2CS), vsum);

  1265.     vsum = vec_sum4s(vec_abs(line3CS), vsum);

  1266.     vsum = vec_sum4s(vec_abs(line4CS), vsum);

  1267.     vsum = vec_sum4s(vec_abs(line5CS), vsum);

  1268.     vsum = vec_sum4s(vec_abs(line6CS), vsum);

  1269.     vsum = vec_sum4s(vec_abs(line7CS), vsum);

  1270.     vsum = vec_sums(vsum, (vector signed int)vzero);

  1271.     vsum = vec_splat(vsum, 3);

  1272.     vec_ste(vsum, 0, &sum);

  1273.     }

  1274.     return sum;

  1275. }

  1276. 

  1277. static int hadamard8_diff16_altivec(/*MpegEncContext*/ void *s, uint8_t *dst, uint8_t *src, int stride, int h){

  1278.     int score;

  1279.     score = hadamard8_diff16x8_altivec(s, dst, src, stride, 8);

  1280.     if (h==16) {

  1281.         dst += 8*stride;

  1282.         src += 8*stride;

  1283.         score += hadamard8_diff16x8_altivec(s, dst, src, stride, 8);

  1284.     }

  1285.     return score;

  1286. }

  1287. 

  1288. static void vorbis_inverse_coupling_altivec(float *mag, float *ang,

  1289.                                             int blocksize)

  1290. {

  1291.     int i;

  1292.     vector float m, a;

  1293.     vector bool int t0, t1;

  1294.     const vector unsigned int v_31 = //XXX

  1295.         vec_add(vec_add(vec_splat_u32(15),vec_splat_u32(15)),vec_splat_u32(1));

  1296.     for (i = 0; i < blocksize; i += 4) {

  1297.         m = vec_ld(0, mag+i);

  1298.         a = vec_ld(0, ang+i);

  1299.         t0 = vec_cmple(m, (vector float)vec_splat_u32(0));

  1300.         t1 = vec_cmple(a, (vector float)vec_splat_u32(0));

  1301.         a = vec_xor(a, (vector float) vec_sl((vector unsigned int)t0, v_31));

  1302.         t0 = (vector bool int)vec_and(a, t1);

  1303.         t1 = (vector bool int)vec_andc(a, t1);

  1304.         a = vec_sub(m, (vector float)t1);

  1305.         m = vec_add(m, (vector float)t0);

  1306.         vec_stl(a, 0, ang+i);

  1307.         vec_stl(m, 0, mag+i);

  1308.     }

  1309. }

  1310. 

  1311. /* next one assumes that ((line_size % 8) == 0) */

  1312. static void avg_pixels8_xy2_altivec(uint8_t *block, const uint8_t *pixels, int line_size, int h)

  1313. {

  1314.     register int i;

  1315.     register vector unsigned char pixelsv1, pixelsv2, pixelsavg;

  1316.     register vector unsigned char blockv, temp1, temp2, blocktemp;

  1317.     register vector unsigned short pixelssum1, pixelssum2, temp3;

  1318. 

  1319.     register const vector unsigned char vczero = (const vector unsigned char)

  1320.                                         vec_splat_u8(0);

  1321.     register const vector unsigned short vctwo = (const vector unsigned short)

  1322.                                         vec_splat_u16(2);

  1323. 

  1324.     temp1 = vec_ld(0, pixels);

  1325.     temp2 = vec_ld(16, pixels);

  1326.     pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(0, pixels));

  1327.     if ((((unsigned long)pixels) & 0x0000000F) ==  0x0000000F) {

  1328.         pixelsv2 = temp2;

  1329.     } else {

  1330.         pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(1, pixels));

  1331.     }

  1332.     pixelsv1 = vec_mergeh(vczero, pixelsv1);

  1333.     pixelsv2 = vec_mergeh(vczero, pixelsv2);

  1334.     pixelssum1 = vec_add((vector unsigned short)pixelsv1,

  1335.                          (vector unsigned short)pixelsv2);

  1336.     pixelssum1 = vec_add(pixelssum1, vctwo);

  1337. 

  1338.     for (i = 0; i < h ; i++) {

  1339.         int rightside = ((unsigned long)block & 0x0000000F);

  1340.         blockv = vec_ld(0, block);

  1341. 

  1342.         temp1 = vec_ld(line_size, pixels);

  1343.         temp2 = vec_ld(line_size + 16, pixels);

  1344.         pixelsv1 = vec_perm(temp1, temp2, vec_lvsl(line_size, pixels));

  1345.         if (((((unsigned long)pixels) + line_size) & 0x0000000F) ==  0x0000000F) {

  1346.             pixelsv2 = temp2;

  1347.         } else {

  1348.             pixelsv2 = vec_perm(temp1, temp2, vec_lvsl(line_size + 1, pixels));

  1349.         }

  1350. 

  1351.         pixelsv1 = vec_mergeh(vczero, pixelsv1);

  1352.         pixelsv2 = vec_mergeh(vczero, pixelsv2);

  1353.         pixelssum2 = vec_add((vector unsigned short)pixelsv1,

  1354.                              (vector unsigned short)pixelsv2);

  1355.         temp3 = vec_add(pixelssum1, pixelssum2);

  1356.         temp3 = vec_sra(temp3, vctwo);

  1357.         pixelssum1 = vec_add(pixelssum2, vctwo);

  1358.         pixelsavg = vec_packsu(temp3, (vector unsigned short) vczero);

  1359. 

  1360.         if (rightside) {

  1361.             blocktemp = vec_perm(blockv, pixelsavg, vcprm(0, 1, s0, s1));

  1362.         } else {

  1363.             blocktemp = vec_perm(blockv, pixelsavg, vcprm(s0, s1, 2, 3));

  1364.         }

  1365. 

  1366.         blockv = vec_avg(blocktemp, blockv);

  1367.         vec_st(blockv, 0, block);

  1368. 

  1369.         block += line_size;

  1370.         pixels += line_size;

  1371.     }

  1372. }

  1373. 

  1374. void dsputil_init_altivec(DSPContext* c, AVCodecContext *avctx)

  1375. {

  1376.     const int high_bit_depth = avctx->bits_per_raw_sample > 8;

  1377. 

  1378.     c->pix_abs[0][1] = sad16_x2_altivec;

  1379.     c->pix_abs[0][2] = sad16_y2_altivec;

  1380.     c->pix_abs[0][3] = sad16_xy2_altivec;

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

  1382.     c->pix_abs[1][0] = sad8_altivec;

  1383.     c->sad[0]= sad16_altivec;

  1384.     c->sad[1]= sad8_altivec;

  1385.     c->pix_norm1 = pix_norm1_altivec;

  1386.     c->sse[1]= sse8_altivec;

  1387.     c->sse[0]= sse16_altivec;

  1388.     c->pix_sum = pix_sum_altivec;

  1389.     c->diff_pixels = diff_pixels_altivec;

  1390.     c->add_bytes= add_bytes_altivec;

  1391.     if (!high_bit_depth) {

  1392.     c->get_pixels = get_pixels_altivec;

  1393.     c->clear_block = clear_block_altivec;

  1394.     c->put_pixels_tab[0][0] = put_pixels16_altivec;

  1395.     /* the two functions do the same thing, so use the same code */

  1396.     c->put_no_rnd_pixels_tab[0][0] = put_pixels16_altivec;

  1397.     c->avg_pixels_tab[0][0] = avg_pixels16_altivec;

  1398.     c->avg_pixels_tab[1][0] = avg_pixels8_altivec;

  1399.     c->avg_pixels_tab[1][3] = avg_pixels8_xy2_altivec;

  1400.     c->put_pixels_tab[1][3] = put_pixels8_xy2_altivec;

  1401.     c->put_no_rnd_pixels_tab[1][3] = put_no_rnd_pixels8_xy2_altivec;

  1402.     c->put_pixels_tab[0][3] = put_pixels16_xy2_altivec;

  1403.     c->put_no_rnd_pixels_tab[0][3] = put_no_rnd_pixels16_xy2_altivec;

  1404.     }

  1405. 

  1406.     c->hadamard8_diff[0] = hadamard8_diff16_altivec;

  1407.     c->hadamard8_diff[1] = hadamard8_diff8x8_altivec;

  1408.     if (CONFIG_VORBIS_DECODER)

  1409.         c->vorbis_inverse_coupling = vorbis_inverse_coupling_altivec;

  1410. }