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  1. /*
  2.  * AltiVec optimizations (C) 2004 Romain Dolbeau <romain@dolbeau.org>
  3.  *
  4.  * based on code by Copyright (C) 2001-2003 Michael Niedermayer (michaelni@gmx.at)
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or modify
  9.  * it under the terms of the GNU General Public License as published by
  10.  * the Free Software Foundation; either version 2 of the License, or
  11.  * (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
  16.  * GNU General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU General Public License
  19.  * 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 "libavutil/avutil.h"
  24.  
  25. #define ALTIVEC_TRANSPOSE_8x8_SHORT(src_a,src_b,src_c,src_d,src_e,src_f,src_g,src_h) \
  26.     do {                                                          \
  27.         __typeof__(src_a) tempA1, tempB1, tempC1, tempD1;         \
  28.         __typeof__(src_a) tempE1, tempF1, tempG1, tempH1;         \
  29.         __typeof__(src_a) tempA2, tempB2, tempC2, tempD2;         \
  30.         __typeof__(src_a) tempE2, tempF2, tempG2, tempH2;         \
  31.         tempA1 = vec_mergeh (src_a, src_e);                       \
  32.         tempB1 = vec_mergel (src_a, src_e);                       \
  33.         tempC1 = vec_mergeh (src_b, src_f);                       \
  34.         tempD1 = vec_mergel (src_b, src_f);                       \
  35.         tempE1 = vec_mergeh (src_c, src_g);                       \
  36.         tempF1 = vec_mergel (src_c, src_g);                       \
  37.         tempG1 = vec_mergeh (src_d, src_h);                       \
  38.         tempH1 = vec_mergel (src_d, src_h);                       \
  39.         tempA2 = vec_mergeh (tempA1, tempE1);                     \
  40.         tempB2 = vec_mergel (tempA1, tempE1);                     \
  41.         tempC2 = vec_mergeh (tempB1, tempF1);                     \
  42.         tempD2 = vec_mergel (tempB1, tempF1);                     \
  43.         tempE2 = vec_mergeh (tempC1, tempG1);                     \
  44.         tempF2 = vec_mergel (tempC1, tempG1);                     \
  45.         tempG2 = vec_mergeh (tempD1, tempH1);                     \
  46.         tempH2 = vec_mergel (tempD1, tempH1);                     \
  47.         src_a = vec_mergeh (tempA2, tempE2);                      \
  48.         src_b = vec_mergel (tempA2, tempE2);                      \
  49.         src_c = vec_mergeh (tempB2, tempF2);                      \
  50.         src_d = vec_mergel (tempB2, tempF2);                      \
  51.         src_e = vec_mergeh (tempC2, tempG2);                      \
  52.         src_f = vec_mergel (tempC2, tempG2);                      \
  53.         src_g = vec_mergeh (tempD2, tempH2);                      \
  54.         src_h = vec_mergel (tempD2, tempH2);                      \
  55.     } while (0)
  56.  
  57.  
  58. static inline int vertClassify_altivec(uint8_t src[], int stride, PPContext *c) {
  59.     /*
  60.     this code makes no assumption on src or stride.
  61.     One could remove the recomputation of the perm
  62.     vector by assuming (stride % 16) == 0, unfortunately
  63.     this is not always true.
  64.     */
  65.     short data_0 = ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1;
  66.     DECLARE_ALIGNED(16, short, data)[8] =
  67.                     {
  68.                         data_0,
  69.                         data_0 * 2 + 1,
  70.                         c->QP * 2,
  71.                         c->QP * 4
  72.                     };
  73.     int numEq;
  74.     uint8_t *src2 = src;
  75.     vector signed short v_dcOffset;
  76.     vector signed short v2QP;
  77.     vector unsigned short v4QP;
  78.     vector unsigned short v_dcThreshold;
  79.     const int properStride = (stride % 16);
  80.     const int srcAlign = ((unsigned long)src2 % 16);
  81.     const int two_vectors = ((srcAlign > 8) || properStride) ? 1 : 0;
  82.     const vector signed int zero = vec_splat_s32(0);
  83.     const vector signed short mask = vec_splat_s16(1);
  84.     vector signed int v_numEq = vec_splat_s32(0);
  85.     vector signed short v_data = vec_ld(0, data);
  86.     vector signed short v_srcAss0, v_srcAss1, v_srcAss2, v_srcAss3,
  87.                         v_srcAss4, v_srcAss5, v_srcAss6, v_srcAss7;
  88. //FIXME avoid this mess if possible
  89.     register int j0 = 0,
  90.                  j1 = stride,
  91.                  j2 = 2 * stride,
  92.                  j3 = 3 * stride,
  93.                  j4 = 4 * stride,
  94.                  j5 = 5 * stride,
  95.                  j6 = 6 * stride,
  96.                  j7 = 7 * stride;
  97.     vector unsigned char v_srcA0, v_srcA1, v_srcA2, v_srcA3,
  98.                          v_srcA4, v_srcA5, v_srcA6, v_srcA7;
  99.  
  100.     v_dcOffset = vec_splat(v_data, 0);
  101.     v_dcThreshold = (vector unsigned short)vec_splat(v_data, 1);
  102.     v2QP = vec_splat(v_data, 2);
  103.     v4QP = (vector unsigned short)vec_splat(v_data, 3);
  104.  
  105.     src2 += stride * 4;
  106.  
  107. #define LOAD_LINE(i)                                                    \
  108.     {                                                                   \
  109.     vector unsigned char perm##i = vec_lvsl(j##i, src2);                \
  110.     vector unsigned char v_srcA2##i;                                    \
  111.     vector unsigned char v_srcA1##i = vec_ld(j##i, src2);               \
  112.     if (two_vectors)                                                    \
  113.         v_srcA2##i = vec_ld(j##i + 16, src2);                           \
  114.     v_srcA##i =                                                         \
  115.         vec_perm(v_srcA1##i, v_srcA2##i, perm##i);                      \
  116.     v_srcAss##i =                                                       \
  117.         (vector signed short)vec_mergeh((vector signed char)zero,       \
  118.                                         (vector signed char)v_srcA##i); }
  119.  
  120. #define LOAD_LINE_ALIGNED(i)                                            \
  121.     v_srcA##i = vec_ld(j##i, src2);                                     \
  122.     v_srcAss##i =                                                       \
  123.         (vector signed short)vec_mergeh((vector signed char)zero,       \
  124.                                         (vector signed char)v_srcA##i)
  125.  
  126.     /* Special-casing the aligned case is worthwhile, as all calls from
  127.      * the (transposed) horizontable deblocks will be aligned, in addition
  128.      * to the naturally aligned vertical deblocks. */
  129.     if (properStride && srcAlign) {
  130.         LOAD_LINE_ALIGNED(0);
  131.         LOAD_LINE_ALIGNED(1);
  132.         LOAD_LINE_ALIGNED(2);
  133.         LOAD_LINE_ALIGNED(3);
  134.         LOAD_LINE_ALIGNED(4);
  135.         LOAD_LINE_ALIGNED(5);
  136.         LOAD_LINE_ALIGNED(6);
  137.         LOAD_LINE_ALIGNED(7);
  138.     } else {
  139.         LOAD_LINE(0);
  140.         LOAD_LINE(1);
  141.         LOAD_LINE(2);
  142.         LOAD_LINE(3);
  143.         LOAD_LINE(4);
  144.         LOAD_LINE(5);
  145.         LOAD_LINE(6);
  146.         LOAD_LINE(7);
  147.     }
  148. #undef LOAD_LINE
  149. #undef LOAD_LINE_ALIGNED
  150.  
  151. #define ITER(i, j)                                                      \
  152.     const vector signed short v_diff##i =                               \
  153.         vec_sub(v_srcAss##i, v_srcAss##j);                              \
  154.     const vector signed short v_sum##i =                                \
  155.         vec_add(v_diff##i, v_dcOffset);                                 \
  156.     const vector signed short v_comp##i =                               \
  157.         (vector signed short)vec_cmplt((vector unsigned short)v_sum##i, \
  158.                                        v_dcThreshold);                  \
  159.     const vector signed short v_part##i = vec_and(mask, v_comp##i);
  160.  
  161.     {
  162.         ITER(0, 1)
  163.         ITER(1, 2)
  164.         ITER(2, 3)
  165.         ITER(3, 4)
  166.         ITER(4, 5)
  167.         ITER(5, 6)
  168.         ITER(6, 7)
  169.  
  170.         v_numEq = vec_sum4s(v_part0, v_numEq);
  171.         v_numEq = vec_sum4s(v_part1, v_numEq);
  172.         v_numEq = vec_sum4s(v_part2, v_numEq);
  173.         v_numEq = vec_sum4s(v_part3, v_numEq);
  174.         v_numEq = vec_sum4s(v_part4, v_numEq);
  175.         v_numEq = vec_sum4s(v_part5, v_numEq);
  176.         v_numEq = vec_sum4s(v_part6, v_numEq);
  177.     }
  178.  
  179. #undef ITER
  180.  
  181.     v_numEq = vec_sums(v_numEq, zero);
  182.  
  183.     v_numEq = vec_splat(v_numEq, 3);
  184.     vec_ste(v_numEq, 0, &numEq);
  185.  
  186.     if (numEq > c->ppMode.flatnessThreshold){
  187.         const vector unsigned char mmoP1 = (const vector unsigned char)
  188.             {0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f,
  189.              0x00, 0x01, 0x12, 0x13, 0x08, 0x09, 0x1A, 0x1B};
  190.         const vector unsigned char mmoP2 = (const vector unsigned char)
  191.             {0x04, 0x05, 0x16, 0x17, 0x0C, 0x0D, 0x1E, 0x1F,
  192.              0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f};
  193.         const vector unsigned char mmoP = (const vector unsigned char)
  194.             vec_lvsl(8, (unsigned char*)0);
  195.  
  196.         vector signed short mmoL1 = vec_perm(v_srcAss0, v_srcAss2, mmoP1);
  197.         vector signed short mmoL2 = vec_perm(v_srcAss4, v_srcAss6, mmoP2);
  198.         vector signed short mmoL = vec_perm(mmoL1, mmoL2, mmoP);
  199.         vector signed short mmoR1 = vec_perm(v_srcAss5, v_srcAss7, mmoP1);
  200.         vector signed short mmoR2 = vec_perm(v_srcAss1, v_srcAss3, mmoP2);
  201.         vector signed short mmoR = vec_perm(mmoR1, mmoR2, mmoP);
  202.         vector signed short mmoDiff = vec_sub(mmoL, mmoR);
  203.         vector unsigned short mmoSum = (vector unsigned short)vec_add(mmoDiff, v2QP);
  204.  
  205.         if (vec_any_gt(mmoSum, v4QP))
  206.             return 0;
  207.         else
  208.             return 1;
  209.     }
  210.     else return 2;
  211. }
  212.  
  213. static inline void doVertLowPass_altivec(uint8_t *src, int stride, PPContext *c) {
  214.     /*
  215.     this code makes no assumption on src or stride.
  216.     One could remove the recomputation of the perm
  217.     vector by assuming (stride % 16) == 0, unfortunately
  218.     this is not always true. Quite a lot of load/stores
  219.     can be removed by assuming proper alignment of
  220.     src & stride :-(
  221.     */
  222.     uint8_t *src2 = src;
  223.     const vector signed int zero = vec_splat_s32(0);
  224.     const int properStride = (stride % 16);
  225.     const int srcAlign = ((unsigned long)src2 % 16);
  226.     DECLARE_ALIGNED(16, short, qp)[8] = {c->QP};
  227.     vector signed short vqp = vec_ld(0, qp);
  228.     vector signed short vb0, vb1, vb2, vb3, vb4, vb5, vb6, vb7, vb8, vb9;
  229.     vector unsigned char vbA0, av_uninit(vbA1), av_uninit(vbA2), av_uninit(vbA3), av_uninit(vbA4), av_uninit(vbA5), av_uninit(vbA6), av_uninit(vbA7), av_uninit(vbA8), vbA9;
  230.     vector unsigned char vbB0, av_uninit(vbB1), av_uninit(vbB2), av_uninit(vbB3), av_uninit(vbB4), av_uninit(vbB5), av_uninit(vbB6), av_uninit(vbB7), av_uninit(vbB8), vbB9;
  231.     vector unsigned char vbT0, vbT1, vbT2, vbT3, vbT4, vbT5, vbT6, vbT7, vbT8, vbT9;
  232.     vector unsigned char perml0, perml1, perml2, perml3, perml4,
  233.                          perml5, perml6, perml7, perml8, perml9;
  234.     register int j0 = 0,
  235.                  j1 = stride,
  236.                  j2 = 2 * stride,
  237.                  j3 = 3 * stride,
  238.                  j4 = 4 * stride,
  239.                  j5 = 5 * stride,
  240.                  j6 = 6 * stride,
  241.                  j7 = 7 * stride,
  242.                  j8 = 8 * stride,
  243.                  j9 = 9 * stride;
  244.  
  245.     vqp = vec_splat(vqp, 0);
  246.  
  247.     src2 += stride*3;
  248.  
  249. #define LOAD_LINE(i)                                                    \
  250.     perml##i = vec_lvsl(i * stride, src2);                              \
  251.     vbA##i = vec_ld(i * stride, src2);                                  \
  252.     vbB##i = vec_ld(i * stride + 16, src2);                             \
  253.     vbT##i = vec_perm(vbA##i, vbB##i, perml##i);                        \
  254.     vb##i =                                                             \
  255.         (vector signed short)vec_mergeh((vector unsigned char)zero,     \
  256.                                         (vector unsigned char)vbT##i)
  257.  
  258. #define LOAD_LINE_ALIGNED(i)                                            \
  259.     vbT##i = vec_ld(j##i, src2);                                        \
  260.     vb##i =                                                             \
  261.         (vector signed short)vec_mergeh((vector signed char)zero,       \
  262.                                         (vector signed char)vbT##i)
  263.  
  264.       /* Special-casing the aligned case is worthwhile, as all calls from
  265.        * the (transposed) horizontable deblocks will be aligned, in addition
  266.        * to the naturally aligned vertical deblocks. */
  267.     if (properStride && srcAlign) {
  268.           LOAD_LINE_ALIGNED(0);
  269.           LOAD_LINE_ALIGNED(1);
  270.           LOAD_LINE_ALIGNED(2);
  271.           LOAD_LINE_ALIGNED(3);
  272.           LOAD_LINE_ALIGNED(4);
  273.           LOAD_LINE_ALIGNED(5);
  274.           LOAD_LINE_ALIGNED(6);
  275.           LOAD_LINE_ALIGNED(7);
  276.           LOAD_LINE_ALIGNED(8);
  277.           LOAD_LINE_ALIGNED(9);
  278.     } else {
  279.           LOAD_LINE(0);
  280.           LOAD_LINE(1);
  281.           LOAD_LINE(2);
  282.           LOAD_LINE(3);
  283.           LOAD_LINE(4);
  284.           LOAD_LINE(5);
  285.           LOAD_LINE(6);
  286.           LOAD_LINE(7);
  287.           LOAD_LINE(8);
  288.           LOAD_LINE(9);
  289.     }
  290. #undef LOAD_LINE
  291. #undef LOAD_LINE_ALIGNED
  292.     {
  293.         const vector unsigned short v_2 = vec_splat_u16(2);
  294.         const vector unsigned short v_4 = vec_splat_u16(4);
  295.  
  296.         const vector signed short v_diff01 = vec_sub(vb0, vb1);
  297.         const vector unsigned short v_cmp01 =
  298.             (const vector unsigned short) vec_cmplt(vec_abs(v_diff01), vqp);
  299.         const vector signed short v_first = vec_sel(vb1, vb0, v_cmp01);
  300.         const vector signed short v_diff89 = vec_sub(vb8, vb9);
  301.         const vector unsigned short v_cmp89 =
  302.             (const vector unsigned short) vec_cmplt(vec_abs(v_diff89), vqp);
  303.         const vector signed short v_last = vec_sel(vb8, vb9, v_cmp89);
  304.  
  305.         const vector signed short temp01 = vec_mladd(v_first, (vector signed short)v_4, vb1);
  306.         const vector signed short temp02 = vec_add(vb2, vb3);
  307.         const vector signed short temp03 = vec_add(temp01, (vector signed short)v_4);
  308.         const vector signed short v_sumsB0 = vec_add(temp02, temp03);
  309.  
  310.         const vector signed short temp11 = vec_sub(v_sumsB0, v_first);
  311.         const vector signed short v_sumsB1 = vec_add(temp11, vb4);
  312.  
  313.         const vector signed short temp21 = vec_sub(v_sumsB1, v_first);
  314.         const vector signed short v_sumsB2 = vec_add(temp21, vb5);
  315.  
  316.         const vector signed short temp31 = vec_sub(v_sumsB2, v_first);
  317.         const vector signed short v_sumsB3 = vec_add(temp31, vb6);
  318.  
  319.         const vector signed short temp41 = vec_sub(v_sumsB3, v_first);
  320.         const vector signed short v_sumsB4 = vec_add(temp41, vb7);
  321.  
  322.         const vector signed short temp51 = vec_sub(v_sumsB4, vb1);
  323.         const vector signed short v_sumsB5 = vec_add(temp51, vb8);
  324.  
  325.         const vector signed short temp61 = vec_sub(v_sumsB5, vb2);
  326.         const vector signed short v_sumsB6 = vec_add(temp61, v_last);
  327.  
  328.         const vector signed short temp71 = vec_sub(v_sumsB6, vb3);
  329.         const vector signed short v_sumsB7 = vec_add(temp71, v_last);
  330.  
  331.         const vector signed short temp81 = vec_sub(v_sumsB7, vb4);
  332.         const vector signed short v_sumsB8 = vec_add(temp81, v_last);
  333.  
  334.         const vector signed short temp91 = vec_sub(v_sumsB8, vb5);
  335.         const vector signed short v_sumsB9 = vec_add(temp91, v_last);
  336.  
  337.     #define COMPUTE_VR(i, j, k)                                             \
  338.         const vector signed short temps1##i =                               \
  339.             vec_add(v_sumsB##i, v_sumsB##k);                                \
  340.         const vector signed short temps2##i =                               \
  341.             vec_mladd(vb##j, (vector signed short)v_2, temps1##i);          \
  342.         const vector signed short  vr##j = vec_sra(temps2##i, v_4)
  343.  
  344.         COMPUTE_VR(0, 1, 2);
  345.         COMPUTE_VR(1, 2, 3);
  346.         COMPUTE_VR(2, 3, 4);
  347.         COMPUTE_VR(3, 4, 5);
  348.         COMPUTE_VR(4, 5, 6);
  349.         COMPUTE_VR(5, 6, 7);
  350.         COMPUTE_VR(6, 7, 8);
  351.         COMPUTE_VR(7, 8, 9);
  352.  
  353.         const vector signed char neg1 = vec_splat_s8(-1);
  354.         const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  355.                                                                          0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
  356.  
  357. #define PACK_AND_STORE(i)                                       \
  358. {   const vector unsigned char perms##i =                       \
  359.         vec_lvsr(i * stride, src2);                             \
  360.     const vector unsigned char vf##i =                          \
  361.         vec_packsu(vr##i, (vector signed short)zero);           \
  362.     const vector unsigned char vg##i =                          \
  363.         vec_perm(vf##i, vbT##i, permHH);                        \
  364.     const vector unsigned char mask##i =                        \
  365.         vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##i); \
  366.     const vector unsigned char vg2##i =                         \
  367.         vec_perm(vg##i, vg##i, perms##i);                       \
  368.     const vector unsigned char svA##i =                         \
  369.         vec_sel(vbA##i, vg2##i, mask##i);                       \
  370.     const vector unsigned char svB##i =                         \
  371.         vec_sel(vg2##i, vbB##i, mask##i);                       \
  372.     vec_st(svA##i, i * stride, src2);                           \
  373.     vec_st(svB##i, i * stride + 16, src2);}
  374.  
  375. #define PACK_AND_STORE_ALIGNED(i)                               \
  376. {   const vector unsigned char vf##i =                          \
  377.         vec_packsu(vr##i, (vector signed short)zero);           \
  378.     const vector unsigned char vg##i =                          \
  379.         vec_perm(vf##i, vbT##i, permHH);                        \
  380.     vec_st(vg##i, i * stride, src2);}
  381.  
  382.         /* Special-casing the aligned case is worthwhile, as all calls from
  383.          * the (transposed) horizontable deblocks will be aligned, in addition
  384.          * to the naturally aligned vertical deblocks. */
  385.         if (properStride && srcAlign) {
  386.             PACK_AND_STORE_ALIGNED(1)
  387.             PACK_AND_STORE_ALIGNED(2)
  388.             PACK_AND_STORE_ALIGNED(3)
  389.             PACK_AND_STORE_ALIGNED(4)
  390.             PACK_AND_STORE_ALIGNED(5)
  391.             PACK_AND_STORE_ALIGNED(6)
  392.             PACK_AND_STORE_ALIGNED(7)
  393.             PACK_AND_STORE_ALIGNED(8)
  394.         } else {
  395.             PACK_AND_STORE(1)
  396.             PACK_AND_STORE(2)
  397.             PACK_AND_STORE(3)
  398.             PACK_AND_STORE(4)
  399.             PACK_AND_STORE(5)
  400.             PACK_AND_STORE(6)
  401.             PACK_AND_STORE(7)
  402.             PACK_AND_STORE(8)
  403.         }
  404.     #undef PACK_AND_STORE
  405.     #undef PACK_AND_STORE_ALIGNED
  406.     }
  407. }
  408.  
  409.  
  410.  
  411. static inline void doVertDefFilter_altivec(uint8_t src[], int stride, PPContext *c) {
  412.     /*
  413.     this code makes no assumption on src or stride.
  414.     One could remove the recomputation of the perm
  415.     vector by assuming (stride % 16) == 0, unfortunately
  416.     this is not always true. Quite a lot of load/stores
  417.     can be removed by assuming proper alignment of
  418.     src & stride :-(
  419.     */
  420.     uint8_t *src2 = src + stride*3;
  421.     const vector signed int zero = vec_splat_s32(0);
  422.     DECLARE_ALIGNED(16, short, qp)[8] = {8*c->QP};
  423.     vector signed short vqp = vec_splat(
  424.                                 (vector signed short)vec_ld(0, qp), 0);
  425.  
  426. #define LOAD_LINE(i)                                                    \
  427.     const vector unsigned char perm##i =                                \
  428.         vec_lvsl(i * stride, src2);                                     \
  429.     const vector unsigned char vbA##i =                                 \
  430.         vec_ld(i * stride, src2);                                       \
  431.     const vector unsigned char vbB##i =                                 \
  432.         vec_ld(i * stride + 16, src2);                                  \
  433.     const vector unsigned char vbT##i =                                 \
  434.         vec_perm(vbA##i, vbB##i, perm##i);                              \
  435.     const vector signed short vb##i =                                   \
  436.         (vector signed short)vec_mergeh((vector unsigned char)zero,     \
  437.                                         (vector unsigned char)vbT##i)
  438.  
  439.      LOAD_LINE(1);
  440.      LOAD_LINE(2);
  441.      LOAD_LINE(3);
  442.      LOAD_LINE(4);
  443.      LOAD_LINE(5);
  444.      LOAD_LINE(6);
  445.      LOAD_LINE(7);
  446.      LOAD_LINE(8);
  447. #undef LOAD_LINE
  448.  
  449.      const vector signed short v_1 = vec_splat_s16(1);
  450.      const vector signed short v_2 = vec_splat_s16(2);
  451.      const vector signed short v_5 = vec_splat_s16(5);
  452.      const vector signed short v_32 = vec_sl(v_1,
  453.                                              (vector unsigned short)v_5);
  454.      /* middle energy */
  455.      const vector signed short l3minusl6 = vec_sub(vb3, vb6);
  456.      const vector signed short l5minusl4 = vec_sub(vb5, vb4);
  457.      const vector signed short twotimes_l3minusl6 = vec_mladd(v_2, l3minusl6, (vector signed short)zero);
  458.      const vector signed short mE = vec_mladd(v_5, l5minusl4, twotimes_l3minusl6);
  459.      const vector signed short absmE = vec_abs(mE);
  460.      /* left & right energy */
  461.      const vector signed short l1minusl4 = vec_sub(vb1, vb4);
  462.      const vector signed short l3minusl2 = vec_sub(vb3, vb2);
  463.      const vector signed short l5minusl8 = vec_sub(vb5, vb8);
  464.      const vector signed short l7minusl6 = vec_sub(vb7, vb6);
  465.      const vector signed short twotimes_l1minusl4 = vec_mladd(v_2, l1minusl4, (vector signed short)zero);
  466.      const vector signed short twotimes_l5minusl8 = vec_mladd(v_2, l5minusl8, (vector signed short)zero);
  467.      const vector signed short lE = vec_mladd(v_5, l3minusl2, twotimes_l1minusl4);
  468.      const vector signed short rE = vec_mladd(v_5, l7minusl6, twotimes_l5minusl8);
  469.      /* d */
  470.      const vector signed short ddiff = vec_sub(absmE,
  471.                                                vec_min(vec_abs(lE),
  472.                                                        vec_abs(rE)));
  473.      const vector signed short ddiffclamp = vec_max(ddiff, (vector signed short)zero);
  474.      const vector signed short dtimes64 = vec_mladd(v_5, ddiffclamp, v_32);
  475.      const vector signed short d = vec_sra(dtimes64, vec_splat_u16(6));
  476.      const vector signed short minusd = vec_sub((vector signed short)zero, d);
  477.      const vector signed short finald = vec_sel(minusd,
  478.                                                 d,
  479.                                                 vec_cmpgt(vec_sub((vector signed short)zero, mE),
  480.                                                           (vector signed short)zero));
  481.      /* q */
  482.      const vector signed short qtimes2 = vec_sub(vb4, vb5);
  483.      /* for a shift right to behave like /2, we need to add one
  484.         to all negative integer */
  485.      const vector signed short rounddown = vec_sel((vector signed short)zero,
  486.                                                    v_1,
  487.                                                    vec_cmplt(qtimes2, (vector signed short)zero));
  488.      const vector signed short q = vec_sra(vec_add(qtimes2, rounddown), vec_splat_u16(1));
  489.      /* clamp */
  490.      const vector signed short dclamp_P1 = vec_max((vector signed short)zero, finald);
  491.      const vector signed short dclamp_P = vec_min(dclamp_P1, q);
  492.      const vector signed short dclamp_N1 = vec_min((vector signed short)zero, finald);
  493.      const vector signed short dclamp_N = vec_max(dclamp_N1, q);
  494.  
  495.      const vector signed short dclampedfinal = vec_sel(dclamp_N,
  496.                                                        dclamp_P,
  497.                                                        vec_cmpgt(q, (vector signed short)zero));
  498.      const vector signed short dornotd = vec_sel((vector signed short)zero,
  499.                                                  dclampedfinal,
  500.                                                  vec_cmplt(absmE, vqp));
  501.      /* add/subtract to l4 and l5 */
  502.      const vector signed short vb4minusd = vec_sub(vb4, dornotd);
  503.      const vector signed short vb5plusd  = vec_add(vb5, dornotd);
  504.      /* finally, stores */
  505.      const vector unsigned char st4 = vec_packsu(vb4minusd, (vector signed short)zero);
  506.      const vector unsigned char st5 = vec_packsu(vb5plusd,  (vector signed short)zero);
  507.  
  508.      const vector signed char neg1 = vec_splat_s8(-1);
  509.      const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  510.                                                                       0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
  511.  
  512. #define STORE(i)                                                \
  513. {    const vector unsigned char perms##i =                      \
  514.          vec_lvsr(i * stride, src2);                            \
  515.      const vector unsigned char vg##i =                         \
  516.          vec_perm(st##i, vbT##i, permHH);                       \
  517.      const vector unsigned char mask##i =                       \
  518.          vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##i); \
  519.      const vector unsigned char vg2##i =                        \
  520.          vec_perm(vg##i, vg##i, perms##i);                      \
  521.      const vector unsigned char svA##i =                        \
  522.          vec_sel(vbA##i, vg2##i, mask##i);                      \
  523.      const vector unsigned char svB##i =                        \
  524.          vec_sel(vg2##i, vbB##i, mask##i);                      \
  525.      vec_st(svA##i, i * stride, src2);                          \
  526.      vec_st(svB##i, i * stride + 16, src2);}
  527.  
  528.      STORE(4)
  529.      STORE(5)
  530. }
  531.  
  532. static inline void dering_altivec(uint8_t src[], int stride, PPContext *c) {
  533.     const vector signed int vsint32_8 = vec_splat_s32(8);
  534.     const vector unsigned int vuint32_4 = vec_splat_u32(4);
  535.     const vector signed char neg1 = vec_splat_s8(-1);
  536.  
  537.     const vector unsigned char permA1 = (vector unsigned char)
  538.         {0x00, 0x01, 0x02, 0x10, 0x11, 0x12, 0x1F, 0x1F,
  539.          0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
  540.     const vector unsigned char permA2 = (vector unsigned char)
  541.         {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x10, 0x11,
  542.          0x12, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
  543.     const vector unsigned char permA1inc = (vector unsigned char)
  544.         {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
  545.          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  546.     const vector unsigned char permA2inc = (vector unsigned char)
  547.         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
  548.          0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  549.     const vector unsigned char magic = (vector unsigned char)
  550.         {0x01, 0x02, 0x01, 0x02, 0x04, 0x02, 0x01, 0x02,
  551.          0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  552.     const vector unsigned char extractPerm = (vector unsigned char)
  553.         {0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01,
  554.          0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01};
  555.     const vector unsigned char extractPermInc = (vector unsigned char)
  556.         {0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
  557.          0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01};
  558.     const vector unsigned char identity = vec_lvsl(0,(unsigned char *)0);
  559.     const vector unsigned char tenRight = (vector unsigned char)
  560.         {0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  561.          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  562.     const vector unsigned char eightLeft = (vector unsigned char)
  563.         {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
  564.          0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08};
  565.  
  566.     /*
  567.     this code makes no assumption on src or stride.
  568.     One could remove the recomputation of the perm
  569.     vector by assuming (stride % 16) == 0, unfortunately
  570.     this is not always true. Quite a lot of load/stores
  571.     can be removed by assuming proper alignment of
  572.     src & stride :-(
  573.     */
  574.     uint8_t *srcCopy = src;
  575.     DECLARE_ALIGNED(16, uint8_t, dt)[16] = { deringThreshold };
  576.     const vector signed int zero = vec_splat_s32(0);
  577.     vector unsigned char v_dt = vec_splat(vec_ld(0, dt), 0);
  578.  
  579. #define LOAD_LINE(i)                                                  \
  580.     const vector unsigned char perm##i =                              \
  581.         vec_lvsl(i * stride, srcCopy);                                \
  582.     vector unsigned char sA##i = vec_ld(i * stride, srcCopy);         \
  583.     vector unsigned char sB##i = vec_ld(i * stride + 16, srcCopy);    \
  584.     vector unsigned char src##i = vec_perm(sA##i, sB##i, perm##i)
  585.  
  586.     LOAD_LINE(0);
  587.     LOAD_LINE(1);
  588.     LOAD_LINE(2);
  589.     LOAD_LINE(3);
  590.     LOAD_LINE(4);
  591.     LOAD_LINE(5);
  592.     LOAD_LINE(6);
  593.     LOAD_LINE(7);
  594.     LOAD_LINE(8);
  595.     LOAD_LINE(9);
  596. #undef LOAD_LINE
  597.  
  598.     vector unsigned char v_avg;
  599.     DECLARE_ALIGNED(16, signed int, S)[8];
  600.     DECLARE_ALIGNED(16, int, tQP2)[4] = { c->QP/2 + 1 };
  601.     vector signed int vQP2 = vec_ld(0, tQP2);
  602.     vQP2 = vec_splat(vQP2, 0);
  603.  
  604.     {
  605.     const vector unsigned char trunc_perm = (vector unsigned char)
  606.         {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
  607.          0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18};
  608.     const vector unsigned char trunc_src12 = vec_perm(src1, src2, trunc_perm);
  609.     const vector unsigned char trunc_src34 = vec_perm(src3, src4, trunc_perm);
  610.     const vector unsigned char trunc_src56 = vec_perm(src5, src6, trunc_perm);
  611.     const vector unsigned char trunc_src78 = vec_perm(src7, src8, trunc_perm);
  612.  
  613. #define EXTRACT(op) do {                                                \
  614.     const vector unsigned char s_1   = vec_##op(trunc_src12, trunc_src34); \
  615.     const vector unsigned char s_2   = vec_##op(trunc_src56, trunc_src78); \
  616.     const vector unsigned char s_6   = vec_##op(s_1, s_2);     \
  617.     const vector unsigned char s_8h  = vec_mergeh(s_6, s_6);   \
  618.     const vector unsigned char s_8l  = vec_mergel(s_6, s_6);   \
  619.     const vector unsigned char s_9   = vec_##op(s_8h, s_8l);   \
  620.     const vector unsigned char s_9h  = vec_mergeh(s_9, s_9);   \
  621.     const vector unsigned char s_9l  = vec_mergel(s_9, s_9);   \
  622.     const vector unsigned char s_10  = vec_##op(s_9h, s_9l);   \
  623.     const vector unsigned char s_10h = vec_mergeh(s_10, s_10); \
  624.     const vector unsigned char s_10l = vec_mergel(s_10, s_10); \
  625.     const vector unsigned char s_11  = vec_##op(s_10h, s_10l); \
  626.     const vector unsigned char s_11h = vec_mergeh(s_11, s_11); \
  627.     const vector unsigned char s_11l = vec_mergel(s_11, s_11); \
  628.     v_##op = vec_##op(s_11h, s_11l);                           \
  629. } while (0)
  630.  
  631.     vector unsigned char v_min;
  632.     vector unsigned char v_max;
  633.     EXTRACT(min);
  634.     EXTRACT(max);
  635. #undef EXTRACT
  636.  
  637.     if (vec_all_lt(vec_sub(v_max, v_min), v_dt))
  638.         return;
  639.  
  640.     v_avg = vec_avg(v_min, v_max);
  641.     }
  642.  
  643.     {
  644.     const vector unsigned short mask1 = (vector unsigned short)
  645.                                         {0x0001, 0x0002, 0x0004, 0x0008,
  646.                                          0x0010, 0x0020, 0x0040, 0x0080};
  647.     const vector unsigned short mask2 = (vector unsigned short)
  648.                                         {0x0100, 0x0200, 0x0000, 0x0000,
  649.                                          0x0000, 0x0000, 0x0000, 0x0000};
  650.  
  651.     const vector unsigned int vuint32_16 = vec_sl(vec_splat_u32(1), vec_splat_u32(4));
  652.     const vector unsigned int vuint32_1 = vec_splat_u32(1);
  653.  
  654.     vector signed int sumA2;
  655.     vector signed int sumB2;
  656.     vector signed int sum0, sum1, sum2, sum3, sum4;
  657.     vector signed int sum5, sum6, sum7, sum8, sum9;
  658.  
  659. #define COMPARE(i)                                                      \
  660.     do {                                                                \
  661.         const vector unsigned char cmp =                                \
  662.             (vector unsigned char)vec_cmpgt(src##i, v_avg);             \
  663.         const vector unsigned short cmpHi =                             \
  664.             (vector unsigned short)vec_mergeh(cmp, cmp);                \
  665.         const vector unsigned short cmpLi =                             \
  666.             (vector unsigned short)vec_mergel(cmp, cmp);                \
  667.         const vector signed short cmpHf =                               \
  668.             (vector signed short)vec_and(cmpHi, mask1);                 \
  669.         const vector signed short cmpLf =                               \
  670.             (vector signed short)vec_and(cmpLi, mask2);                 \
  671.         const vector signed int sump = vec_sum4s(cmpHf, zero);          \
  672.         const vector signed int sumq = vec_sum4s(cmpLf, sump);          \
  673.         sum##i  = vec_sums(sumq, zero);                                 \
  674.     } while (0)
  675.  
  676.     COMPARE(0);
  677.     COMPARE(1);
  678.     COMPARE(2);
  679.     COMPARE(3);
  680.     COMPARE(4);
  681.     COMPARE(5);
  682.     COMPARE(6);
  683.     COMPARE(7);
  684.     COMPARE(8);
  685.     COMPARE(9);
  686. #undef COMPARE
  687.  
  688.     {
  689.     const vector signed int sump02 = vec_mergel(sum0, sum2);
  690.     const vector signed int sump13 = vec_mergel(sum1, sum3);
  691.     const vector signed int sumA = vec_mergel(sump02, sump13);
  692.  
  693.     const vector signed int sump46 = vec_mergel(sum4, sum6);
  694.     const vector signed int sump57 = vec_mergel(sum5, sum7);
  695.     const vector signed int sumB = vec_mergel(sump46, sump57);
  696.  
  697.     const vector signed int sump8A = vec_mergel(sum8, zero);
  698.     const vector signed int sump9B = vec_mergel(sum9, zero);
  699.     const vector signed int sumC = vec_mergel(sump8A, sump9B);
  700.  
  701.     const vector signed int tA = vec_sl(vec_nor(zero, sumA), vuint32_16);
  702.     const vector signed int tB = vec_sl(vec_nor(zero, sumB), vuint32_16);
  703.     const vector signed int tC = vec_sl(vec_nor(zero, sumC), vuint32_16);
  704.     const vector signed int t2A = vec_or(sumA, tA);
  705.     const vector signed int t2B = vec_or(sumB, tB);
  706.     const vector signed int t2C = vec_or(sumC, tC);
  707.     const vector signed int t3A = vec_and(vec_sra(t2A, vuint32_1),
  708.                                           vec_sl(t2A, vuint32_1));
  709.     const vector signed int t3B = vec_and(vec_sra(t2B, vuint32_1),
  710.                                           vec_sl(t2B, vuint32_1));
  711.     const vector signed int t3C = vec_and(vec_sra(t2C, vuint32_1),
  712.                                           vec_sl(t2C, vuint32_1));
  713.     const vector signed int yA = vec_and(t2A, t3A);
  714.     const vector signed int yB = vec_and(t2B, t3B);
  715.     const vector signed int yC = vec_and(t2C, t3C);
  716.  
  717.     const vector unsigned char strangeperm1 = vec_lvsl(4, (unsigned char*)0);
  718.     const vector unsigned char strangeperm2 = vec_lvsl(8, (unsigned char*)0);
  719.     const vector signed int sumAd4 = vec_perm(yA, yB, strangeperm1);
  720.     const vector signed int sumAd8 = vec_perm(yA, yB, strangeperm2);
  721.     const vector signed int sumBd4 = vec_perm(yB, yC, strangeperm1);
  722.     const vector signed int sumBd8 = vec_perm(yB, yC, strangeperm2);
  723.     const vector signed int sumAp = vec_and(yA,
  724.                                             vec_and(sumAd4,sumAd8));
  725.     const vector signed int sumBp = vec_and(yB,
  726.                                             vec_and(sumBd4,sumBd8));
  727.     sumA2 = vec_or(sumAp,
  728.                    vec_sra(sumAp,
  729.                            vuint32_16));
  730.     sumB2  = vec_or(sumBp,
  731.                     vec_sra(sumBp,
  732.                             vuint32_16));
  733.     }
  734.     vec_st(sumA2, 0, S);
  735.     vec_st(sumB2, 16, S);
  736.     }
  737.  
  738.     /* I'm not sure the following is actually faster
  739.        than straight, unvectorized C code :-( */
  740.  
  741. #define F_INIT()                                       \
  742.     vector unsigned char tenRightM = tenRight;         \
  743.     vector unsigned char permA1M = permA1;             \
  744.     vector unsigned char permA2M = permA2;             \
  745.     vector unsigned char extractPermM = extractPerm
  746.  
  747. #define F2(i, j, k, l)                                                  \
  748.     if (S[i] & (1 << (l+1))) {                                          \
  749.         const vector unsigned char a_A = vec_perm(src##i, src##j, permA1M); \
  750.         const vector unsigned char a_B = vec_perm(a_A, src##k, permA2M); \
  751.         const vector signed int a_sump =                                \
  752.             (vector signed int)vec_msum(a_B, magic, (vector unsigned int)zero);\
  753.         vector signed int F = vec_sr(vec_sums(a_sump, vsint32_8), vuint32_4); \
  754.         const vector signed int p =                                     \
  755.             (vector signed int)vec_perm(src##j, (vector unsigned char)zero, \
  756.                                         extractPermM);                  \
  757.         const vector signed int sum  = vec_add(p, vQP2);                \
  758.         const vector signed int diff = vec_sub(p, vQP2);                \
  759.         vector signed int newpm;                                        \
  760.         vector unsigned char newpm2, mask;                              \
  761.         F = vec_splat(F, 3);                                            \
  762.         if (vec_all_lt(sum, F))                                         \
  763.             newpm = sum;                                                \
  764.         else if (vec_all_gt(diff, F))                                   \
  765.             newpm = diff;                                               \
  766.         else newpm = F;                                                 \
  767.         newpm2 = vec_splat((vector unsigned char)newpm, 15);            \
  768.         mask = vec_add(identity, tenRightM);                            \
  769.         src##j = vec_perm(src##j, newpm2, mask);                        \
  770.     }                                                                   \
  771.     permA1M = vec_add(permA1M, permA1inc);                              \
  772.     permA2M = vec_add(permA2M, permA2inc);                              \
  773.     tenRightM = vec_sro(tenRightM, eightLeft);                          \
  774.     extractPermM = vec_add(extractPermM, extractPermInc)
  775.  
  776. #define ITER(i, j, k) do {                      \
  777.     F_INIT();                                   \
  778.     F2(i, j, k, 0);                             \
  779.     F2(i, j, k, 1);                             \
  780.     F2(i, j, k, 2);                             \
  781.     F2(i, j, k, 3);                             \
  782.     F2(i, j, k, 4);                             \
  783.     F2(i, j, k, 5);                             \
  784.     F2(i, j, k, 6);                             \
  785.     F2(i, j, k, 7);                             \
  786. } while (0)
  787.  
  788.     ITER(0, 1, 2);
  789.     ITER(1, 2, 3);
  790.     ITER(2, 3, 4);
  791.     ITER(3, 4, 5);
  792.     ITER(4, 5, 6);
  793.     ITER(5, 6, 7);
  794.     ITER(6, 7, 8);
  795.     ITER(7, 8, 9);
  796.  
  797. #define STORE_LINE(i) do {                              \
  798.     const vector unsigned char permST =                 \
  799.         vec_lvsr(i * stride, srcCopy);                  \
  800.     const vector unsigned char maskST =                 \
  801.         vec_perm((vector unsigned char)zero,            \
  802.                  (vector unsigned char)neg1, permST);   \
  803.     src##i = vec_perm(src##i ,src##i, permST);          \
  804.     sA##i= vec_sel(sA##i, src##i, maskST);              \
  805.     sB##i= vec_sel(src##i, sB##i, maskST);              \
  806.     vec_st(sA##i, i * stride, srcCopy);                 \
  807.     vec_st(sB##i, i * stride + 16, srcCopy);            \
  808. } while (0)
  809.  
  810.     STORE_LINE(1);
  811.     STORE_LINE(2);
  812.     STORE_LINE(3);
  813.     STORE_LINE(4);
  814.     STORE_LINE(5);
  815.     STORE_LINE(6);
  816.     STORE_LINE(7);
  817.     STORE_LINE(8);
  818.  
  819. #undef STORE_LINE
  820. #undef ITER
  821. #undef F2
  822. }
  823.  
  824. #define doHorizLowPass_altivec(a...) doHorizLowPass_C(a)
  825. #define doHorizDefFilter_altivec(a...) doHorizDefFilter_C(a)
  826. #define do_a_deblock_altivec(a...) do_a_deblock_C(a)
  827.  
  828. static inline void tempNoiseReducer_altivec(uint8_t *src, int stride,
  829.                                             uint8_t *tempBlurred, uint32_t *tempBlurredPast, int *maxNoise)
  830. {
  831.     const vector signed char neg1 = vec_splat_s8(-1);
  832.     const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
  833.                                                                      0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
  834.  
  835.     const vector signed int zero = vec_splat_s32(0);
  836.     const vector signed short vsint16_1 = vec_splat_s16(1);
  837.     vector signed int v_dp = zero;
  838.     vector signed int v_sysdp = zero;
  839.     int d, sysd, i;
  840.  
  841. #define LOAD_LINE(src, i)                                               \
  842.     register int j##src##i = i * stride;                                \
  843.     vector unsigned char perm##src##i = vec_lvsl(j##src##i, src);       \
  844.     const vector unsigned char v_##src##A1##i = vec_ld(j##src##i, src); \
  845.     const vector unsigned char v_##src##A2##i = vec_ld(j##src##i + 16, src); \
  846.     const vector unsigned char v_##src##A##i =                          \
  847.         vec_perm(v_##src##A1##i, v_##src##A2##i, perm##src##i);         \
  848.     vector signed short v_##src##Ass##i =                               \
  849.         (vector signed short)vec_mergeh((vector signed char)zero,       \
  850.                                         (vector signed char)v_##src##A##i)
  851.  
  852.     LOAD_LINE(src, 0);
  853.     LOAD_LINE(src, 1);
  854.     LOAD_LINE(src, 2);
  855.     LOAD_LINE(src, 3);
  856.     LOAD_LINE(src, 4);
  857.     LOAD_LINE(src, 5);
  858.     LOAD_LINE(src, 6);
  859.     LOAD_LINE(src, 7);
  860.  
  861.     LOAD_LINE(tempBlurred, 0);
  862.     LOAD_LINE(tempBlurred, 1);
  863.     LOAD_LINE(tempBlurred, 2);
  864.     LOAD_LINE(tempBlurred, 3);
  865.     LOAD_LINE(tempBlurred, 4);
  866.     LOAD_LINE(tempBlurred, 5);
  867.     LOAD_LINE(tempBlurred, 6);
  868.     LOAD_LINE(tempBlurred, 7);
  869. #undef LOAD_LINE
  870.  
  871. #define ACCUMULATE_DIFFS(i) do {                                \
  872.         vector signed short v_d = vec_sub(v_tempBlurredAss##i,  \
  873.                                           v_srcAss##i);         \
  874.         v_dp = vec_msums(v_d, v_d, v_dp);                       \
  875.         v_sysdp = vec_msums(v_d, vsint16_1, v_sysdp);           \
  876.     } while (0)
  877.  
  878.     ACCUMULATE_DIFFS(0);
  879.     ACCUMULATE_DIFFS(1);
  880.     ACCUMULATE_DIFFS(2);
  881.     ACCUMULATE_DIFFS(3);
  882.     ACCUMULATE_DIFFS(4);
  883.     ACCUMULATE_DIFFS(5);
  884.     ACCUMULATE_DIFFS(6);
  885.     ACCUMULATE_DIFFS(7);
  886. #undef ACCUMULATE_DIFFS
  887.  
  888.     tempBlurredPast[127]= maxNoise[0];
  889.     tempBlurredPast[128]= maxNoise[1];
  890.     tempBlurredPast[129]= maxNoise[2];
  891.  
  892.     v_dp = vec_sums(v_dp, zero);
  893.     v_sysdp = vec_sums(v_sysdp, zero);
  894.  
  895.     v_dp = vec_splat(v_dp, 3);
  896.     v_sysdp = vec_splat(v_sysdp, 3);
  897.  
  898.     vec_ste(v_dp, 0, &d);
  899.     vec_ste(v_sysdp, 0, &sysd);
  900.  
  901.     i = d;
  902.     d = (4*d
  903.          +(*(tempBlurredPast-256))
  904.          +(*(tempBlurredPast-1))+ (*(tempBlurredPast+1))
  905.          +(*(tempBlurredPast+256))
  906.          +4)>>3;
  907.  
  908.     *tempBlurredPast=i;
  909.  
  910.     if (d > maxNoise[1]) {
  911.         if (d < maxNoise[2]) {
  912. #define OP(i) v_tempBlurredAss##i = vec_avg(v_tempBlurredAss##i, v_srcAss##i);
  913.  
  914.             OP(0);
  915.             OP(1);
  916.             OP(2);
  917.             OP(3);
  918.             OP(4);
  919.             OP(5);
  920.             OP(6);
  921.             OP(7);
  922. #undef OP
  923.         } else {
  924. #define OP(i) v_tempBlurredAss##i = v_srcAss##i;
  925.  
  926.             OP(0);
  927.             OP(1);
  928.             OP(2);
  929.             OP(3);
  930.             OP(4);
  931.             OP(5);
  932.             OP(6);
  933.             OP(7);
  934. #undef OP
  935.         }
  936.     } else {
  937.         if (d < maxNoise[0]) {
  938.             const vector signed short vsint16_7 = vec_splat_s16(7);
  939.             const vector signed short vsint16_4 = vec_splat_s16(4);
  940.             const vector unsigned short vuint16_3 = vec_splat_u16(3);
  941.  
  942. #define OP(i) do {                                                      \
  943.             const vector signed short v_temp =                          \
  944.                 vec_mladd(v_tempBlurredAss##i, vsint16_7, v_srcAss##i); \
  945.             const vector signed short v_temp2 = vec_add(v_temp, vsint16_4); \
  946.             v_tempBlurredAss##i = vec_sr(v_temp2, vuint16_3);           \
  947.         } while (0)
  948.  
  949.             OP(0);
  950.             OP(1);
  951.             OP(2);
  952.             OP(3);
  953.             OP(4);
  954.             OP(5);
  955.             OP(6);
  956.             OP(7);
  957. #undef OP
  958.         } else {
  959.             const vector signed short vsint16_3 = vec_splat_s16(3);
  960.             const vector signed short vsint16_2 = vec_splat_s16(2);
  961.  
  962. #define OP(i) do {                                              \
  963.             const vector signed short v_temp =                  \
  964.                 vec_mladd(v_tempBlurredAss##i, vsint16_3, v_srcAss##i); \
  965.             const vector signed short v_temp2 = vec_add(v_temp, vsint16_2); \
  966.             v_tempBlurredAss##i =                                       \
  967.                 vec_sr(v_temp2, (vector unsigned short)vsint16_2);      \
  968.         } while (0)
  969.  
  970.             OP(0);
  971.             OP(1);
  972.             OP(2);
  973.             OP(3);
  974.             OP(4);
  975.             OP(5);
  976.             OP(6);
  977.             OP(7);
  978. #undef OP
  979.         }
  980.     }
  981.  
  982. #define PACK_AND_STORE(src, i) do {                                      \
  983.     const vector unsigned char perms = vec_lvsr(i * stride, src);        \
  984.     const vector unsigned char vf =                                      \
  985.         vec_packsu(v_tempBlurredAss##1, (vector signed short)zero);     \
  986.     const vector unsigned char vg = vec_perm(vf, v_##src##A##i, permHH); \
  987.     const vector unsigned char mask =                                    \
  988.         vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms); \
  989.     const vector unsigned char vg2 = vec_perm(vg, vg, perms);            \
  990.     const vector unsigned char svA = vec_sel(v_##src##A1##i, vg2, mask); \
  991.     const vector unsigned char svB = vec_sel(vg2, v_##src##A2##i, mask); \
  992.     vec_st(svA, i * stride, src);                                        \
  993.     vec_st(svB, i * stride + 16, src);                                   \
  994. } while (0)
  995.  
  996.     PACK_AND_STORE(src, 0);
  997.     PACK_AND_STORE(src, 1);
  998.     PACK_AND_STORE(src, 2);
  999.     PACK_AND_STORE(src, 3);
  1000.     PACK_AND_STORE(src, 4);
  1001.     PACK_AND_STORE(src, 5);
  1002.     PACK_AND_STORE(src, 6);
  1003.     PACK_AND_STORE(src, 7);
  1004.     PACK_AND_STORE(tempBlurred, 0);
  1005.     PACK_AND_STORE(tempBlurred, 1);
  1006.     PACK_AND_STORE(tempBlurred, 2);
  1007.     PACK_AND_STORE(tempBlurred, 3);
  1008.     PACK_AND_STORE(tempBlurred, 4);
  1009.     PACK_AND_STORE(tempBlurred, 5);
  1010.     PACK_AND_STORE(tempBlurred, 6);
  1011.     PACK_AND_STORE(tempBlurred, 7);
  1012. #undef PACK_AND_STORE
  1013. }
  1014.  
  1015. static inline void transpose_16x8_char_toPackedAlign_altivec(unsigned char* dst, unsigned char* src, int stride) {
  1016.     const vector unsigned char zero = vec_splat_u8(0);
  1017.  
  1018. #define LOAD_DOUBLE_LINE(i, j)                                          \
  1019.     vector unsigned char perm1##i = vec_lvsl(i * stride, src);          \
  1020.     vector unsigned char perm2##i = vec_lvsl(j * stride, src);          \
  1021.     vector unsigned char srcA##i = vec_ld(i * stride, src);             \
  1022.     vector unsigned char srcB##i = vec_ld(i * stride + 16, src);        \
  1023.     vector unsigned char srcC##i = vec_ld(j * stride, src);             \
  1024.     vector unsigned char srcD##i = vec_ld(j * stride+ 16, src);         \
  1025.     vector unsigned char src##i = vec_perm(srcA##i, srcB##i, perm1##i); \
  1026.     vector unsigned char src##j = vec_perm(srcC##i, srcD##i, perm2##i)
  1027.  
  1028.     LOAD_DOUBLE_LINE(0, 1);
  1029.     LOAD_DOUBLE_LINE(2, 3);
  1030.     LOAD_DOUBLE_LINE(4, 5);
  1031.     LOAD_DOUBLE_LINE(6, 7);
  1032. #undef LOAD_DOUBLE_LINE
  1033.  
  1034.     vector unsigned char tempA = vec_mergeh(src0, zero);
  1035.     vector unsigned char tempB = vec_mergel(src0, zero);
  1036.     vector unsigned char tempC = vec_mergeh(src1, zero);
  1037.     vector unsigned char tempD = vec_mergel(src1, zero);
  1038.     vector unsigned char tempE = vec_mergeh(src2, zero);
  1039.     vector unsigned char tempF = vec_mergel(src2, zero);
  1040.     vector unsigned char tempG = vec_mergeh(src3, zero);
  1041.     vector unsigned char tempH = vec_mergel(src3, zero);
  1042.     vector unsigned char tempI = vec_mergeh(src4, zero);
  1043.     vector unsigned char tempJ = vec_mergel(src4, zero);
  1044.     vector unsigned char tempK = vec_mergeh(src5, zero);
  1045.     vector unsigned char tempL = vec_mergel(src5, zero);
  1046.     vector unsigned char tempM = vec_mergeh(src6, zero);
  1047.     vector unsigned char tempN = vec_mergel(src6, zero);
  1048.     vector unsigned char tempO = vec_mergeh(src7, zero);
  1049.     vector unsigned char tempP = vec_mergel(src7, zero);
  1050.  
  1051.     vector unsigned char temp0  = vec_mergeh(tempA, tempI);
  1052.     vector unsigned char temp1  = vec_mergel(tempA, tempI);
  1053.     vector unsigned char temp2  = vec_mergeh(tempB, tempJ);
  1054.     vector unsigned char temp3  = vec_mergel(tempB, tempJ);
  1055.     vector unsigned char temp4  = vec_mergeh(tempC, tempK);
  1056.     vector unsigned char temp5  = vec_mergel(tempC, tempK);
  1057.     vector unsigned char temp6  = vec_mergeh(tempD, tempL);
  1058.     vector unsigned char temp7  = vec_mergel(tempD, tempL);
  1059.     vector unsigned char temp8  = vec_mergeh(tempE, tempM);
  1060.     vector unsigned char temp9  = vec_mergel(tempE, tempM);
  1061.     vector unsigned char temp10 = vec_mergeh(tempF, tempN);
  1062.     vector unsigned char temp11 = vec_mergel(tempF, tempN);
  1063.     vector unsigned char temp12 = vec_mergeh(tempG, tempO);
  1064.     vector unsigned char temp13 = vec_mergel(tempG, tempO);
  1065.     vector unsigned char temp14 = vec_mergeh(tempH, tempP);
  1066.     vector unsigned char temp15 = vec_mergel(tempH, tempP);
  1067.  
  1068.     tempA = vec_mergeh(temp0, temp8);
  1069.     tempB = vec_mergel(temp0, temp8);
  1070.     tempC = vec_mergeh(temp1, temp9);
  1071.     tempD = vec_mergel(temp1, temp9);
  1072.     tempE = vec_mergeh(temp2, temp10);
  1073.     tempF = vec_mergel(temp2, temp10);
  1074.     tempG = vec_mergeh(temp3, temp11);
  1075.     tempH = vec_mergel(temp3, temp11);
  1076.     tempI = vec_mergeh(temp4, temp12);
  1077.     tempJ = vec_mergel(temp4, temp12);
  1078.     tempK = vec_mergeh(temp5, temp13);
  1079.     tempL = vec_mergel(temp5, temp13);
  1080.     tempM = vec_mergeh(temp6, temp14);
  1081.     tempN = vec_mergel(temp6, temp14);
  1082.     tempO = vec_mergeh(temp7, temp15);
  1083.     tempP = vec_mergel(temp7, temp15);
  1084.  
  1085.     temp0  = vec_mergeh(tempA, tempI);
  1086.     temp1  = vec_mergel(tempA, tempI);
  1087.     temp2  = vec_mergeh(tempB, tempJ);
  1088.     temp3  = vec_mergel(tempB, tempJ);
  1089.     temp4  = vec_mergeh(tempC, tempK);
  1090.     temp5  = vec_mergel(tempC, tempK);
  1091.     temp6  = vec_mergeh(tempD, tempL);
  1092.     temp7  = vec_mergel(tempD, tempL);
  1093.     temp8  = vec_mergeh(tempE, tempM);
  1094.     temp9  = vec_mergel(tempE, tempM);
  1095.     temp10 = vec_mergeh(tempF, tempN);
  1096.     temp11 = vec_mergel(tempF, tempN);
  1097.     temp12 = vec_mergeh(tempG, tempO);
  1098.     temp13 = vec_mergel(tempG, tempO);
  1099.     temp14 = vec_mergeh(tempH, tempP);
  1100.     temp15 = vec_mergel(tempH, tempP);
  1101.  
  1102.     vec_st(temp0,    0, dst);
  1103.     vec_st(temp1,   16, dst);
  1104.     vec_st(temp2,   32, dst);
  1105.     vec_st(temp3,   48, dst);
  1106.     vec_st(temp4,   64, dst);
  1107.     vec_st(temp5,   80, dst);
  1108.     vec_st(temp6,   96, dst);
  1109.     vec_st(temp7,  112, dst);
  1110.     vec_st(temp8,  128, dst);
  1111.     vec_st(temp9,  144, dst);
  1112.     vec_st(temp10, 160, dst);
  1113.     vec_st(temp11, 176, dst);
  1114.     vec_st(temp12, 192, dst);
  1115.     vec_st(temp13, 208, dst);
  1116.     vec_st(temp14, 224, dst);
  1117.     vec_st(temp15, 240, dst);
  1118. }
  1119.  
  1120. static inline void transpose_8x16_char_fromPackedAlign_altivec(unsigned char* dst, unsigned char* src, int stride) {
  1121.     const vector unsigned char zero = vec_splat_u8(0);
  1122.     const vector signed   char neg1 = vec_splat_s8(-1);
  1123.  
  1124. #define LOAD_DOUBLE_LINE(i, j)                                  \
  1125.     vector unsigned char src##i = vec_ld(i * 16, src);            \
  1126.     vector unsigned char src##j = vec_ld(j * 16, src)
  1127.  
  1128.     LOAD_DOUBLE_LINE(0, 1);
  1129.     LOAD_DOUBLE_LINE(2, 3);
  1130.     LOAD_DOUBLE_LINE(4, 5);
  1131.     LOAD_DOUBLE_LINE(6, 7);
  1132.     LOAD_DOUBLE_LINE(8, 9);
  1133.     LOAD_DOUBLE_LINE(10, 11);
  1134.     LOAD_DOUBLE_LINE(12, 13);
  1135.     LOAD_DOUBLE_LINE(14, 15);
  1136. #undef LOAD_DOUBLE_LINE
  1137.  
  1138.     vector unsigned char tempA = vec_mergeh(src0, src8);
  1139.     vector unsigned char tempB;
  1140.     vector unsigned char tempC = vec_mergeh(src1, src9);
  1141.     vector unsigned char tempD;
  1142.     vector unsigned char tempE = vec_mergeh(src2, src10);
  1143.     vector unsigned char tempG = vec_mergeh(src3, src11);
  1144.     vector unsigned char tempI = vec_mergeh(src4, src12);
  1145.     vector unsigned char tempJ;
  1146.     vector unsigned char tempK = vec_mergeh(src5, src13);
  1147.     vector unsigned char tempL;
  1148.     vector unsigned char tempM = vec_mergeh(src6, src14);
  1149.     vector unsigned char tempO = vec_mergeh(src7, src15);
  1150.  
  1151.     vector unsigned char temp0 = vec_mergeh(tempA, tempI);
  1152.     vector unsigned char temp1 = vec_mergel(tempA, tempI);
  1153.     vector unsigned char temp2;
  1154.     vector unsigned char temp3;
  1155.     vector unsigned char temp4 = vec_mergeh(tempC, tempK);
  1156.     vector unsigned char temp5 = vec_mergel(tempC, tempK);
  1157.     vector unsigned char temp6;
  1158.     vector unsigned char temp7;
  1159.     vector unsigned char temp8 = vec_mergeh(tempE, tempM);
  1160.     vector unsigned char temp9 = vec_mergel(tempE, tempM);
  1161.     vector unsigned char temp12 = vec_mergeh(tempG, tempO);
  1162.     vector unsigned char temp13 = vec_mergel(tempG, tempO);
  1163.  
  1164.     tempA = vec_mergeh(temp0, temp8);
  1165.     tempB = vec_mergel(temp0, temp8);
  1166.     tempC = vec_mergeh(temp1, temp9);
  1167.     tempD = vec_mergel(temp1, temp9);
  1168.     tempI = vec_mergeh(temp4, temp12);
  1169.     tempJ = vec_mergel(temp4, temp12);
  1170.     tempK = vec_mergeh(temp5, temp13);
  1171.     tempL = vec_mergel(temp5, temp13);
  1172.  
  1173.     temp0 = vec_mergeh(tempA, tempI);
  1174.     temp1 = vec_mergel(tempA, tempI);
  1175.     temp2 = vec_mergeh(tempB, tempJ);
  1176.     temp3 = vec_mergel(tempB, tempJ);
  1177.     temp4 = vec_mergeh(tempC, tempK);
  1178.     temp5 = vec_mergel(tempC, tempK);
  1179.     temp6 = vec_mergeh(tempD, tempL);
  1180.     temp7 = vec_mergel(tempD, tempL);
  1181.  
  1182.  
  1183. #define STORE_DOUBLE_LINE(i, j) do {                                    \
  1184.     vector unsigned char dstAi = vec_ld(i * stride, dst);               \
  1185.     vector unsigned char dstBi = vec_ld(i * stride + 16, dst);          \
  1186.     vector unsigned char dstAj = vec_ld(j * stride, dst);               \
  1187.     vector unsigned char dstBj = vec_ld(j * stride+ 16, dst);           \
  1188.     vector unsigned char aligni = vec_lvsr(i * stride, dst);            \
  1189.     vector unsigned char alignj = vec_lvsr(j * stride, dst);            \
  1190.     vector unsigned char maski =                                        \
  1191.         vec_perm(zero, (vector unsigned char)neg1, aligni);             \
  1192.     vector unsigned char maskj =                                        \
  1193.         vec_perm(zero, (vector unsigned char)neg1, alignj);             \
  1194.     vector unsigned char dstRi = vec_perm(temp##i, temp##i, aligni);    \
  1195.     vector unsigned char dstRj = vec_perm(temp##j, temp##j, alignj);    \
  1196.     vector unsigned char dstAFi = vec_sel(dstAi, dstRi, maski);         \
  1197.     vector unsigned char dstBFi = vec_sel(dstRi, dstBi, maski);         \
  1198.     vector unsigned char dstAFj = vec_sel(dstAj, dstRj, maskj);         \
  1199.     vector unsigned char dstBFj = vec_sel(dstRj, dstBj, maskj);         \
  1200.     vec_st(dstAFi, i * stride, dst);                                    \
  1201.     vec_st(dstBFi, i * stride + 16, dst);                               \
  1202.     vec_st(dstAFj, j * stride, dst);                                    \
  1203.     vec_st(dstBFj, j * stride + 16, dst);                               \
  1204. } while (0)
  1205.  
  1206.     STORE_DOUBLE_LINE(0,1);
  1207.     STORE_DOUBLE_LINE(2,3);
  1208.     STORE_DOUBLE_LINE(4,5);
  1209.     STORE_DOUBLE_LINE(6,7);
  1210. }
  1211.