postprocess_altivec_template.c 53.5 KB
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/*
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 * AltiVec optimizations (C) 2004 Romain Dolbeau <romain@dolbeau.org>
 *
 * based on code by Copyright (C) 2001-2003 Michael Niedermayer (michaelni@gmx.at)
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
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#include "libavutil/avutil.h"
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#define ALTIVEC_TRANSPOSE_8x8_SHORT(src_a,src_b,src_c,src_d,src_e,src_f,src_g,src_h) \
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    do {                                                          \
        __typeof__(src_a) tempA1, tempB1, tempC1, tempD1;         \
        __typeof__(src_a) tempE1, tempF1, tempG1, tempH1;         \
        __typeof__(src_a) tempA2, tempB2, tempC2, tempD2;         \
        __typeof__(src_a) tempE2, tempF2, tempG2, tempH2;         \
        tempA1 = vec_mergeh (src_a, src_e);                       \
        tempB1 = vec_mergel (src_a, src_e);                       \
        tempC1 = vec_mergeh (src_b, src_f);                       \
        tempD1 = vec_mergel (src_b, src_f);                       \
        tempE1 = vec_mergeh (src_c, src_g);                       \
        tempF1 = vec_mergel (src_c, src_g);                       \
        tempG1 = vec_mergeh (src_d, src_h);                       \
        tempH1 = vec_mergel (src_d, src_h);                       \
        tempA2 = vec_mergeh (tempA1, tempE1);                     \
        tempB2 = vec_mergel (tempA1, tempE1);                     \
        tempC2 = vec_mergeh (tempB1, tempF1);                     \
        tempD2 = vec_mergel (tempB1, tempF1);                     \
        tempE2 = vec_mergeh (tempC1, tempG1);                     \
        tempF2 = vec_mergel (tempC1, tempG1);                     \
        tempG2 = vec_mergeh (tempD1, tempH1);                     \
        tempH2 = vec_mergel (tempD1, tempH1);                     \
        src_a = vec_mergeh (tempA2, tempE2);                      \
        src_b = vec_mergel (tempA2, tempE2);                      \
        src_c = vec_mergeh (tempB2, tempF2);                      \
        src_d = vec_mergel (tempB2, tempF2);                      \
        src_e = vec_mergeh (tempC2, tempG2);                      \
        src_f = vec_mergel (tempC2, tempG2);                      \
        src_g = vec_mergeh (tempD2, tempH2);                      \
        src_h = vec_mergel (tempD2, tempH2);                      \
    } while (0)
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static inline int vertClassify_altivec(uint8_t src[], int stride, PPContext *c) {
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    /*
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    this code makes no assumption on src or stride.
    One could remove the recomputation of the perm
    vector by assuming (stride % 16) == 0, unfortunately
    this is not always true.
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    */
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    DECLARE_ALIGNED(16, short, data[8]) =
                    {
                        ((c->nonBQP*c->ppMode.baseDcDiff)>>8) + 1,
                        data[0] * 2 + 1,
                        c->QP * 2,
                        c->QP * 4
                    };
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    int numEq;
    uint8_t *src2 = src;
    vector signed short v_dcOffset;
    vector signed short v2QP;
    vector unsigned short v4QP;
    vector unsigned short v_dcThreshold;
    const int properStride = (stride % 16);
    const int srcAlign = ((unsigned long)src2 % 16);
    const int two_vectors = ((srcAlign > 8) || properStride) ? 1 : 0;
    const vector signed int zero = vec_splat_s32(0);
    const vector signed short mask = vec_splat_s16(1);
    vector signed int v_numEq = vec_splat_s32(0);
    vector signed short v_data = vec_ld(0, data);
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    vector signed short v_srcAss0, v_srcAss1, v_srcAss2, v_srcAss3,
                        v_srcAss4, v_srcAss5, v_srcAss6, v_srcAss7;
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//FIXME avoid this mess if possible
    register int j0 = 0,
                 j1 = stride,
                 j2 = 2 * stride,
                 j3 = 3 * stride,
                 j4 = 4 * stride,
                 j5 = 5 * stride,
                 j6 = 6 * stride,
                 j7 = 7 * stride;
    vector unsigned char v_srcA0, v_srcA1, v_srcA2, v_srcA3,
                         v_srcA4, v_srcA5, v_srcA6, v_srcA7;
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    v_dcOffset = vec_splat(v_data, 0);
    v_dcThreshold = (vector unsigned short)vec_splat(v_data, 1);
    v2QP = vec_splat(v_data, 2);
    v4QP = (vector unsigned short)vec_splat(v_data, 3);

    src2 += stride * 4;

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#define LOAD_LINE(i)                                                    \
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    {                                                                   \
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    vector unsigned char perm##i = vec_lvsl(j##i, src2);                \
    vector unsigned char v_srcA2##i;                                    \
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    vector unsigned char v_srcA1##i = vec_ld(j##i, src2);               \
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    if (two_vectors)                                                    \
        v_srcA2##i = vec_ld(j##i + 16, src2);                           \
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    v_srcA##i =                                                         \
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        vec_perm(v_srcA1##i, v_srcA2##i, perm##i);                      \
    v_srcAss##i =                                                       \
        (vector signed short)vec_mergeh((vector signed char)zero,       \
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                                        (vector signed char)v_srcA##i); }
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#define LOAD_LINE_ALIGNED(i)                                            \
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    v_srcA##i = vec_ld(j##i, src2);                                     \
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    v_srcAss##i =                                                       \
        (vector signed short)vec_mergeh((vector signed char)zero,       \
                                        (vector signed char)v_srcA##i)
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    /* Special-casing the aligned case is worthwhile, as all calls from
     * the (transposed) horizontable deblocks will be aligned, in addition
     * to the naturally aligned vertical deblocks. */
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    if (properStride && srcAlign) {
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        LOAD_LINE_ALIGNED(0);
        LOAD_LINE_ALIGNED(1);
        LOAD_LINE_ALIGNED(2);
        LOAD_LINE_ALIGNED(3);
        LOAD_LINE_ALIGNED(4);
        LOAD_LINE_ALIGNED(5);
        LOAD_LINE_ALIGNED(6);
        LOAD_LINE_ALIGNED(7);
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    } else {
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        LOAD_LINE(0);
        LOAD_LINE(1);
        LOAD_LINE(2);
        LOAD_LINE(3);
        LOAD_LINE(4);
        LOAD_LINE(5);
        LOAD_LINE(6);
        LOAD_LINE(7);
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    }
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#undef LOAD_LINE
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#undef LOAD_LINE_ALIGNED
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#define ITER(i, j)                                                      \
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    const vector signed short v_diff##i =                               \
        vec_sub(v_srcAss##i, v_srcAss##j);                              \
    const vector signed short v_sum##i =                                \
        vec_add(v_diff##i, v_dcOffset);                                 \
    const vector signed short v_comp##i =                               \
        (vector signed short)vec_cmplt((vector unsigned short)v_sum##i, \
                                       v_dcThreshold);                  \
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    const vector signed short v_part##i = vec_and(mask, v_comp##i);

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    {
        ITER(0, 1)
        ITER(1, 2)
        ITER(2, 3)
        ITER(3, 4)
        ITER(4, 5)
        ITER(5, 6)
        ITER(6, 7)

        v_numEq = vec_sum4s(v_part0, v_numEq);
        v_numEq = vec_sum4s(v_part1, v_numEq);
        v_numEq = vec_sum4s(v_part2, v_numEq);
        v_numEq = vec_sum4s(v_part3, v_numEq);
        v_numEq = vec_sum4s(v_part4, v_numEq);
        v_numEq = vec_sum4s(v_part5, v_numEq);
        v_numEq = vec_sum4s(v_part6, v_numEq);
    }
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#undef ITER

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    v_numEq = vec_sums(v_numEq, zero);

    v_numEq = vec_splat(v_numEq, 3);
    vec_ste(v_numEq, 0, &numEq);

    if (numEq > c->ppMode.flatnessThreshold){
        const vector unsigned char mmoP1 = (const vector unsigned char)
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            {0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f,
             0x00, 0x01, 0x12, 0x13, 0x08, 0x09, 0x1A, 0x1B};
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        const vector unsigned char mmoP2 = (const vector unsigned char)
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            {0x04, 0x05, 0x16, 0x17, 0x0C, 0x0D, 0x1E, 0x1F,
             0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f, 0x1f};
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        const vector unsigned char mmoP = (const vector unsigned char)
            vec_lvsl(8, (unsigned char*)0);

        vector signed short mmoL1 = vec_perm(v_srcAss0, v_srcAss2, mmoP1);
        vector signed short mmoL2 = vec_perm(v_srcAss4, v_srcAss6, mmoP2);
        vector signed short mmoL = vec_perm(mmoL1, mmoL2, mmoP);
        vector signed short mmoR1 = vec_perm(v_srcAss5, v_srcAss7, mmoP1);
        vector signed short mmoR2 = vec_perm(v_srcAss1, v_srcAss3, mmoP2);
        vector signed short mmoR = vec_perm(mmoR1, mmoR2, mmoP);
        vector signed short mmoDiff = vec_sub(mmoL, mmoR);
        vector unsigned short mmoSum = (vector unsigned short)vec_add(mmoDiff, v2QP);

        if (vec_any_gt(mmoSum, v4QP))
            return 0;
        else
            return 1;
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    }
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    else return 2;
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}

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static inline void doVertLowPass_altivec(uint8_t *src, int stride, PPContext *c) {
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    /*
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    this code makes no assumption on src or stride.
    One could remove the recomputation of the perm
    vector by assuming (stride % 16) == 0, unfortunately
    this is not always true. Quite a lot of load/stores
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Vitor Sessak committed
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    can be removed by assuming proper alignment of
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    src & stride :-(
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    */
    uint8_t *src2 = src;
    const vector signed int zero = vec_splat_s32(0);
    const int properStride = (stride % 16);
    const int srcAlign = ((unsigned long)src2 % 16);
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    DECLARE_ALIGNED(16, short, qp[8]) = {c->QP};
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    vector signed short vqp = vec_ld(0, qp);
    vector signed short vb0, vb1, vb2, vb3, vb4, vb5, vb6, vb7, vb8, vb9;
    vector unsigned char vbA0, vbA1, vbA2, vbA3, vbA4, vbA5, vbA6, vbA7, vbA8, vbA9;
    vector unsigned char vbB0, vbB1, vbB2, vbB3, vbB4, vbB5, vbB6, vbB7, vbB8, vbB9;
    vector unsigned char vbT0, vbT1, vbT2, vbT3, vbT4, vbT5, vbT6, vbT7, vbT8, vbT9;
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    vector unsigned char perml0, perml1, perml2, perml3, perml4,
                         perml5, perml6, perml7, perml8, perml9;
    register int j0 = 0,
                 j1 = stride,
                 j2 = 2 * stride,
                 j3 = 3 * stride,
                 j4 = 4 * stride,
                 j5 = 5 * stride,
                 j6 = 6 * stride,
                 j7 = 7 * stride,
                 j8 = 8 * stride,
                 j9 = 9 * stride;

    vqp = vec_splat(vqp, 0);

    src2 += stride*3;
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#define LOAD_LINE(i)                                                    \
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    perml##i = vec_lvsl(i * stride, src2);                              \
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    vbA##i = vec_ld(i * stride, src2);                                  \
    vbB##i = vec_ld(i * stride + 16, src2);                             \
    vbT##i = vec_perm(vbA##i, vbB##i, perml##i);                        \
    vb##i =                                                             \
        (vector signed short)vec_mergeh((vector unsigned char)zero,     \
                                        (vector unsigned char)vbT##i)
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#define LOAD_LINE_ALIGNED(i)                                            \
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    vbT##i = vec_ld(j##i, src2);                                        \
    vb##i =                                                             \
        (vector signed short)vec_mergeh((vector signed char)zero,       \
                                        (vector signed char)vbT##i)

      /* Special-casing the aligned case is worthwhile, as all calls from
       * the (transposed) horizontable deblocks will be aligned, in addition
       * to the naturally aligned vertical deblocks. */
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    if (properStride && srcAlign) {
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          LOAD_LINE_ALIGNED(0);
          LOAD_LINE_ALIGNED(1);
          LOAD_LINE_ALIGNED(2);
          LOAD_LINE_ALIGNED(3);
          LOAD_LINE_ALIGNED(4);
          LOAD_LINE_ALIGNED(5);
          LOAD_LINE_ALIGNED(6);
          LOAD_LINE_ALIGNED(7);
          LOAD_LINE_ALIGNED(8);
          LOAD_LINE_ALIGNED(9);
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    } else {
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          LOAD_LINE(0);
          LOAD_LINE(1);
          LOAD_LINE(2);
          LOAD_LINE(3);
          LOAD_LINE(4);
          LOAD_LINE(5);
          LOAD_LINE(6);
          LOAD_LINE(7);
          LOAD_LINE(8);
          LOAD_LINE(9);
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    }
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#undef LOAD_LINE
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#undef LOAD_LINE_ALIGNED
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    {
        const vector unsigned short v_2 = vec_splat_u16(2);
        const vector unsigned short v_4 = vec_splat_u16(4);

        const vector signed short v_diff01 = vec_sub(vb0, vb1);
        const vector unsigned short v_cmp01 =
            (const vector unsigned short) vec_cmplt(vec_abs(v_diff01), vqp);
        const vector signed short v_first = vec_sel(vb1, vb0, v_cmp01);
        const vector signed short v_diff89 = vec_sub(vb8, vb9);
        const vector unsigned short v_cmp89 =
            (const vector unsigned short) vec_cmplt(vec_abs(v_diff89), vqp);
        const vector signed short v_last = vec_sel(vb8, vb9, v_cmp89);

        const vector signed short temp01 = vec_mladd(v_first, (vector signed short)v_4, vb1);
        const vector signed short temp02 = vec_add(vb2, vb3);
        const vector signed short temp03 = vec_add(temp01, (vector signed short)v_4);
        const vector signed short v_sumsB0 = vec_add(temp02, temp03);

        const vector signed short temp11 = vec_sub(v_sumsB0, v_first);
        const vector signed short v_sumsB1 = vec_add(temp11, vb4);

        const vector signed short temp21 = vec_sub(v_sumsB1, v_first);
        const vector signed short v_sumsB2 = vec_add(temp21, vb5);

        const vector signed short temp31 = vec_sub(v_sumsB2, v_first);
        const vector signed short v_sumsB3 = vec_add(temp31, vb6);

        const vector signed short temp41 = vec_sub(v_sumsB3, v_first);
        const vector signed short v_sumsB4 = vec_add(temp41, vb7);

        const vector signed short temp51 = vec_sub(v_sumsB4, vb1);
        const vector signed short v_sumsB5 = vec_add(temp51, vb8);

        const vector signed short temp61 = vec_sub(v_sumsB5, vb2);
        const vector signed short v_sumsB6 = vec_add(temp61, v_last);

        const vector signed short temp71 = vec_sub(v_sumsB6, vb3);
        const vector signed short v_sumsB7 = vec_add(temp71, v_last);

        const vector signed short temp81 = vec_sub(v_sumsB7, vb4);
        const vector signed short v_sumsB8 = vec_add(temp81, v_last);

        const vector signed short temp91 = vec_sub(v_sumsB8, vb5);
        const vector signed short v_sumsB9 = vec_add(temp91, v_last);

    #define COMPUTE_VR(i, j, k)                                             \
        const vector signed short temps1##i =                               \
            vec_add(v_sumsB##i, v_sumsB##k);                                \
        const vector signed short temps2##i =                               \
            vec_mladd(vb##j, (vector signed short)v_2, temps1##i);          \
        const vector signed short  vr##j = vec_sra(temps2##i, v_4)

        COMPUTE_VR(0, 1, 2);
        COMPUTE_VR(1, 2, 3);
        COMPUTE_VR(2, 3, 4);
        COMPUTE_VR(3, 4, 5);
        COMPUTE_VR(4, 5, 6);
        COMPUTE_VR(5, 6, 7);
        COMPUTE_VR(6, 7, 8);
        COMPUTE_VR(7, 8, 9);

        const vector signed char neg1 = vec_splat_s8(-1);
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        const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                                                                         0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
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#define PACK_AND_STORE(i)                                       \
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{   const vector unsigned char perms##i =                       \
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        vec_lvsr(i * stride, src2);                             \
    const vector unsigned char vf##i =                          \
        vec_packsu(vr##i, (vector signed short)zero);           \
    const vector unsigned char vg##i =                          \
        vec_perm(vf##i, vbT##i, permHH);                        \
    const vector unsigned char mask##i =                        \
        vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##i); \
    const vector unsigned char vg2##i =                         \
        vec_perm(vg##i, vg##i, perms##i);                       \
    const vector unsigned char svA##i =                         \
        vec_sel(vbA##i, vg2##i, mask##i);                       \
    const vector unsigned char svB##i =                         \
        vec_sel(vg2##i, vbB##i, mask##i);                       \
    vec_st(svA##i, i * stride, src2);                           \
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    vec_st(svB##i, i * stride + 16, src2);}
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#define PACK_AND_STORE_ALIGNED(i)                               \
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{   const vector unsigned char vf##i =                          \
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        vec_packsu(vr##i, (vector signed short)zero);           \
    const vector unsigned char vg##i =                          \
        vec_perm(vf##i, vbT##i, permHH);                        \
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    vec_st(vg##i, i * stride, src2);}
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        /* Special-casing the aligned case is worthwhile, as all calls from
         * the (transposed) horizontable deblocks will be aligned, in addition
         * to the naturally aligned vertical deblocks. */
        if (properStride && srcAlign) {
            PACK_AND_STORE_ALIGNED(1)
            PACK_AND_STORE_ALIGNED(2)
            PACK_AND_STORE_ALIGNED(3)
            PACK_AND_STORE_ALIGNED(4)
            PACK_AND_STORE_ALIGNED(5)
            PACK_AND_STORE_ALIGNED(6)
            PACK_AND_STORE_ALIGNED(7)
            PACK_AND_STORE_ALIGNED(8)
        } else {
            PACK_AND_STORE(1)
            PACK_AND_STORE(2)
            PACK_AND_STORE(3)
            PACK_AND_STORE(4)
            PACK_AND_STORE(5)
            PACK_AND_STORE(6)
            PACK_AND_STORE(7)
            PACK_AND_STORE(8)
        }
    #undef PACK_AND_STORE
    #undef PACK_AND_STORE_ALIGNED
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    }
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}
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static inline void doVertDefFilter_altivec(uint8_t src[], int stride, PPContext *c) {
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    /*
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    this code makes no assumption on src or stride.
    One could remove the recomputation of the perm
    vector by assuming (stride % 16) == 0, unfortunately
    this is not always true. Quite a lot of load/stores
Vitor Sessak's avatar
Vitor Sessak committed
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    can be removed by assuming proper alignment of
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    src & stride :-(
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    */
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    uint8_t *src2 = src + stride*3;
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    const vector signed int zero = vec_splat_s32(0);
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    DECLARE_ALIGNED(16, short, qp[8]) = {8*c->QP};
    vector signed short vqp = vec_splat(
                                (vector signed short)vec_ld(0, qp), 0);
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#define LOAD_LINE(i)                                                    \
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    const vector unsigned char perm##i =                                \
        vec_lvsl(i * stride, src2);                                     \
    const vector unsigned char vbA##i =                                 \
        vec_ld(i * stride, src2);                                       \
    const vector unsigned char vbB##i =                                 \
        vec_ld(i * stride + 16, src2);                                  \
    const vector unsigned char vbT##i =                                 \
        vec_perm(vbA##i, vbB##i, perm##i);                              \
    const vector signed short vb##i =                                   \
        (vector signed short)vec_mergeh((vector unsigned char)zero,     \
                                        (vector unsigned char)vbT##i)

     LOAD_LINE(1);
     LOAD_LINE(2);
     LOAD_LINE(3);
     LOAD_LINE(4);
     LOAD_LINE(5);
     LOAD_LINE(6);
     LOAD_LINE(7);
     LOAD_LINE(8);
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#undef LOAD_LINE
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     const vector signed short v_1 = vec_splat_s16(1);
     const vector signed short v_2 = vec_splat_s16(2);
     const vector signed short v_5 = vec_splat_s16(5);
     const vector signed short v_32 = vec_sl(v_1,
                                             (vector unsigned short)v_5);
     /* middle energy */
     const vector signed short l3minusl6 = vec_sub(vb3, vb6);
     const vector signed short l5minusl4 = vec_sub(vb5, vb4);
     const vector signed short twotimes_l3minusl6 = vec_mladd(v_2, l3minusl6, (vector signed short)zero);
     const vector signed short mE = vec_mladd(v_5, l5minusl4, twotimes_l3minusl6);
     const vector signed short absmE = vec_abs(mE);
     /* left & right energy */
     const vector signed short l1minusl4 = vec_sub(vb1, vb4);
     const vector signed short l3minusl2 = vec_sub(vb3, vb2);
     const vector signed short l5minusl8 = vec_sub(vb5, vb8);
     const vector signed short l7minusl6 = vec_sub(vb7, vb6);
     const vector signed short twotimes_l1minusl4 = vec_mladd(v_2, l1minusl4, (vector signed short)zero);
     const vector signed short twotimes_l5minusl8 = vec_mladd(v_2, l5minusl8, (vector signed short)zero);
     const vector signed short lE = vec_mladd(v_5, l3minusl2, twotimes_l1minusl4);
     const vector signed short rE = vec_mladd(v_5, l7minusl6, twotimes_l5minusl8);
     /* d */
     const vector signed short ddiff = vec_sub(absmE,
                                               vec_min(vec_abs(lE),
                                                       vec_abs(rE)));
     const vector signed short ddiffclamp = vec_max(ddiff, (vector signed short)zero);
     const vector signed short dtimes64 = vec_mladd(v_5, ddiffclamp, v_32);
     const vector signed short d = vec_sra(dtimes64, vec_splat_u16(6));
     const vector signed short minusd = vec_sub((vector signed short)zero, d);
     const vector signed short finald = vec_sel(minusd,
                                                d,
                                                vec_cmpgt(vec_sub((vector signed short)zero, mE),
                                                          (vector signed short)zero));
     /* q */
     const vector signed short qtimes2 = vec_sub(vb4, vb5);
     /* for a shift right to behave like /2, we need to add one
        to all negative integer */
     const vector signed short rounddown = vec_sel((vector signed short)zero,
                                                   v_1,
                                                   vec_cmplt(qtimes2, (vector signed short)zero));
     const vector signed short q = vec_sra(vec_add(qtimes2, rounddown), vec_splat_u16(1));
     /* clamp */
     const vector signed short dclamp_P1 = vec_max((vector signed short)zero, finald);
     const vector signed short dclamp_P = vec_min(dclamp_P1, q);
     const vector signed short dclamp_N1 = vec_min((vector signed short)zero, finald);
     const vector signed short dclamp_N = vec_max(dclamp_N1, q);

     const vector signed short dclampedfinal = vec_sel(dclamp_N,
                                                       dclamp_P,
                                                       vec_cmpgt(q, (vector signed short)zero));
     const vector signed short dornotd = vec_sel((vector signed short)zero,
                                                 dclampedfinal,
                                                 vec_cmplt(absmE, vqp));
     /* add/subtract to l4 and l5 */
     const vector signed short vb4minusd = vec_sub(vb4, dornotd);
     const vector signed short vb5plusd  = vec_add(vb5, dornotd);
     /* finally, stores */
     const vector unsigned char st4 = vec_packsu(vb4minusd, (vector signed short)zero);
     const vector unsigned char st5 = vec_packsu(vb5plusd,  (vector signed short)zero);

     const vector signed char neg1 = vec_splat_s8(-1);
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     const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                                                                      0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
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#define STORE(i)                                                \
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{    const vector unsigned char perms##i =                      \
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         vec_lvsr(i * stride, src2);                            \
     const vector unsigned char vg##i =                         \
         vec_perm(st##i, vbT##i, permHH);                       \
     const vector unsigned char mask##i =                       \
         vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##i); \
     const vector unsigned char vg2##i =                        \
         vec_perm(vg##i, vg##i, perms##i);                      \
     const vector unsigned char svA##i =                        \
         vec_sel(vbA##i, vg2##i, mask##i);                      \
     const vector unsigned char svB##i =                        \
         vec_sel(vg2##i, vbB##i, mask##i);                      \
     vec_st(svA##i, i * stride, src2);                          \
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     vec_st(svB##i, i * stride + 16, src2);}
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     STORE(4)
     STORE(5)
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}

static inline void dering_altivec(uint8_t src[], int stride, PPContext *c) {
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    /*
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    this code makes no assumption on src or stride.
    One could remove the recomputation of the perm
    vector by assuming (stride % 16) == 0, unfortunately
    this is not always true. Quite a lot of load/stores
Vitor Sessak's avatar
Vitor Sessak committed
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    can be removed by assuming proper alignment of
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    src & stride :-(
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    */
    uint8_t *srcCopy = src;
    DECLARE_ALIGNED(16, uint8_t, dt[16]);
    const vector signed int zero = vec_splat_s32(0);
    vector unsigned char v_dt;
    dt[0] = deringThreshold;
    v_dt = vec_splat(vec_ld(0, dt), 0);
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#define LOAD_LINE(i)                                                  \
    const vector unsigned char perm##i =                              \
        vec_lvsl(i * stride, srcCopy);                                \
    vector unsigned char sA##i = vec_ld(i * stride, srcCopy);         \
    vector unsigned char sB##i = vec_ld(i * stride + 16, srcCopy);    \
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    vector unsigned char src##i = vec_perm(sA##i, sB##i, perm##i)

    LOAD_LINE(0);
    LOAD_LINE(1);
    LOAD_LINE(2);
    LOAD_LINE(3);
    LOAD_LINE(4);
    LOAD_LINE(5);
    LOAD_LINE(6);
    LOAD_LINE(7);
    LOAD_LINE(8);
    LOAD_LINE(9);
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#undef LOAD_LINE

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    vector unsigned char v_avg;
    {
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    const vector unsigned char trunc_perm = (vector unsigned char)
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        {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
         0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18};
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    const vector unsigned char trunc_src12 = vec_perm(src1, src2, trunc_perm);
    const vector unsigned char trunc_src34 = vec_perm(src3, src4, trunc_perm);
    const vector unsigned char trunc_src56 = vec_perm(src5, src6, trunc_perm);
    const vector unsigned char trunc_src78 = vec_perm(src7, src8, trunc_perm);
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#define EXTRACT(op) do {                                                \
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    const vector unsigned char s##op##_1   = vec_##op(trunc_src12, trunc_src34); \
    const vector unsigned char s##op##_2   = vec_##op(trunc_src56, trunc_src78); \
    const vector unsigned char s##op##_6   = vec_##op(s##op##_1, s##op##_2);     \
    const vector unsigned char s##op##_8h  = vec_mergeh(s##op##_6, s##op##_6);   \
    const vector unsigned char s##op##_8l  = vec_mergel(s##op##_6, s##op##_6);   \
    const vector unsigned char s##op##_9   = vec_##op(s##op##_8h, s##op##_8l);   \
    const vector unsigned char s##op##_9h  = vec_mergeh(s##op##_9, s##op##_9);   \
    const vector unsigned char s##op##_9l  = vec_mergel(s##op##_9, s##op##_9);   \
    const vector unsigned char s##op##_10  = vec_##op(s##op##_9h, s##op##_9l);   \
    const vector unsigned char s##op##_10h = vec_mergeh(s##op##_10, s##op##_10); \
    const vector unsigned char s##op##_10l = vec_mergel(s##op##_10, s##op##_10); \
    const vector unsigned char s##op##_11  = vec_##op(s##op##_10h, s##op##_10l); \
    const vector unsigned char s##op##_11h = vec_mergeh(s##op##_11, s##op##_11); \
    const vector unsigned char s##op##_11l = vec_mergel(s##op##_11, s##op##_11); \
    v_##op = vec_##op(s##op##_11h, s##op##_11l); } while (0)
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    vector unsigned char v_min;
    vector unsigned char v_max;
    EXTRACT(min);
    EXTRACT(max);
#undef EXTRACT
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    if (vec_all_lt(vec_sub(v_max, v_min), v_dt))
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        return;
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    v_avg = vec_avg(v_min, v_max);
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    }
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    DECLARE_ALIGNED(16, signed int, S[8]);
    {
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    const vector unsigned short mask1 = (vector unsigned short)
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                                        {0x0001, 0x0002, 0x0004, 0x0008,
                                         0x0010, 0x0020, 0x0040, 0x0080};
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    const vector unsigned short mask2 = (vector unsigned short)
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                                        {0x0100, 0x0200, 0x0000, 0x0000,
                                         0x0000, 0x0000, 0x0000, 0x0000};
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    const vector unsigned int vuint32_16 = vec_sl(vec_splat_u32(1), vec_splat_u32(4));
    const vector unsigned int vuint32_1 = vec_splat_u32(1);
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#define COMPARE(i)                                                      \
    vector signed int sum##i;                                           \
    do {                                                                \
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        const vector unsigned char cmp##i =                             \
            (vector unsigned char)vec_cmpgt(src##i, v_avg);             \
        const vector unsigned short cmpHi##i =                          \
            (vector unsigned short)vec_mergeh(cmp##i, cmp##i);          \
        const vector unsigned short cmpLi##i =                          \
            (vector unsigned short)vec_mergel(cmp##i, cmp##i);          \
        const vector signed short cmpHf##i =                            \
            (vector signed short)vec_and(cmpHi##i, mask1);              \
        const vector signed short cmpLf##i =                            \
            (vector signed short)vec_and(cmpLi##i, mask2);              \
        const vector signed int sump##i = vec_sum4s(cmpHf##i, zero);    \
        const vector signed int sumq##i = vec_sum4s(cmpLf##i, sump##i); \
        sum##i  = vec_sums(sumq##i, zero); } while (0)
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    COMPARE(0);
    COMPARE(1);
    COMPARE(2);
    COMPARE(3);
    COMPARE(4);
    COMPARE(5);
    COMPARE(6);
    COMPARE(7);
    COMPARE(8);
    COMPARE(9);
#undef COMPARE
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    vector signed int sumA2;
    vector signed int sumB2;
    {
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    const vector signed int sump02 = vec_mergel(sum0, sum2);
    const vector signed int sump13 = vec_mergel(sum1, sum3);
    const vector signed int sumA = vec_mergel(sump02, sump13);

    const vector signed int sump46 = vec_mergel(sum4, sum6);
    const vector signed int sump57 = vec_mergel(sum5, sum7);
    const vector signed int sumB = vec_mergel(sump46, sump57);

    const vector signed int sump8A = vec_mergel(sum8, zero);
    const vector signed int sump9B = vec_mergel(sum9, zero);
    const vector signed int sumC = vec_mergel(sump8A, sump9B);

    const vector signed int tA = vec_sl(vec_nor(zero, sumA), vuint32_16);
    const vector signed int tB = vec_sl(vec_nor(zero, sumB), vuint32_16);
    const vector signed int tC = vec_sl(vec_nor(zero, sumC), vuint32_16);
    const vector signed int t2A = vec_or(sumA, tA);
    const vector signed int t2B = vec_or(sumB, tB);
    const vector signed int t2C = vec_or(sumC, tC);
    const vector signed int t3A = vec_and(vec_sra(t2A, vuint32_1),
                                          vec_sl(t2A, vuint32_1));
    const vector signed int t3B = vec_and(vec_sra(t2B, vuint32_1),
                                          vec_sl(t2B, vuint32_1));
    const vector signed int t3C = vec_and(vec_sra(t2C, vuint32_1),
                                          vec_sl(t2C, vuint32_1));
    const vector signed int yA = vec_and(t2A, t3A);
    const vector signed int yB = vec_and(t2B, t3B);
    const vector signed int yC = vec_and(t2C, t3C);

    const vector unsigned char strangeperm1 = vec_lvsl(4, (unsigned char*)0);
    const vector unsigned char strangeperm2 = vec_lvsl(8, (unsigned char*)0);
    const vector signed int sumAd4 = vec_perm(yA, yB, strangeperm1);
    const vector signed int sumAd8 = vec_perm(yA, yB, strangeperm2);
    const vector signed int sumBd4 = vec_perm(yB, yC, strangeperm1);
    const vector signed int sumBd8 = vec_perm(yB, yC, strangeperm2);
    const vector signed int sumAp = vec_and(yA,
                                            vec_and(sumAd4,sumAd8));
    const vector signed int sumBp = vec_and(yB,
                                            vec_and(sumBd4,sumBd8));
    sumA2 = vec_or(sumAp,
                   vec_sra(sumAp,
                           vuint32_16));
    sumB2  = vec_or(sumBp,
                    vec_sra(sumBp,
                            vuint32_16));
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    }
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    vec_st(sumA2, 0, S);
    vec_st(sumB2, 16, S);
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    }

    /* I'm not sure the following is actually faster
       than straight, unvectorized C code :-( */

    DECLARE_ALIGNED(16, int, tQP2[4]);
    tQP2[0]= c->QP/2 + 1;
    vector signed int vQP2 = vec_ld(0, tQP2);
    vQP2 = vec_splat(vQP2, 0);
    const vector signed int vsint32_8 = vec_splat_s32(8);
    const vector unsigned int vuint32_4 = vec_splat_u32(4);

    const vector unsigned char permA1 = (vector unsigned char)
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        {0x00, 0x01, 0x02, 0x10, 0x11, 0x12, 0x1F, 0x1F,
         0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
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    const vector unsigned char permA2 = (vector unsigned char)
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        {0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x10, 0x11,
         0x12, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F, 0x1F};
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    const vector unsigned char permA1inc = (vector unsigned char)
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        {0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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    const vector unsigned char permA2inc = (vector unsigned char)
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        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01,
         0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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    const vector unsigned char magic = (vector unsigned char)
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        {0x01, 0x02, 0x01, 0x02, 0x04, 0x02, 0x01, 0x02,
         0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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    const vector unsigned char extractPerm = (vector unsigned char)
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        {0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01,
         0x10, 0x10, 0x10, 0x01, 0x10, 0x10, 0x10, 0x01};
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    const vector unsigned char extractPermInc = (vector unsigned char)
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        {0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01,
         0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01};
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    const vector unsigned char identity = vec_lvsl(0,(unsigned char *)0);
    const vector unsigned char tenRight = (vector unsigned char)
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        {0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
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    const vector unsigned char eightLeft = (vector unsigned char)
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        {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
         0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08};
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#define F_INIT(i)                                       \
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    vector unsigned char tenRightM##i = tenRight;       \
    vector unsigned char permA1M##i = permA1;           \
    vector unsigned char permA2M##i = permA2;           \
    vector unsigned char extractPermM##i = extractPerm
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#define F2(i, j, k, l)                                                  \
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    if (S[i] & (1 << (l+1))) {                                          \
        const vector unsigned char a_##j##_A##l =                       \
            vec_perm(src##i, src##j, permA1M##i);                       \
        const vector unsigned char a_##j##_B##l =                       \
            vec_perm(a_##j##_A##l, src##k, permA2M##i);                 \
        const vector signed int a_##j##_sump##l =                       \
            (vector signed int)vec_msum(a_##j##_B##l, magic,            \
                                        (vector unsigned int)zero);     \
        vector signed int F_##j##_##l =                                 \
            vec_sr(vec_sums(a_##j##_sump##l, vsint32_8), vuint32_4);    \
        F_##j##_##l = vec_splat(F_##j##_##l, 3);                        \
        const vector signed int p_##j##_##l =                           \
            (vector signed int)vec_perm(src##j,                         \
                                        (vector unsigned char)zero,     \
                                        extractPermM##i);               \
        const vector signed int sum_##j##_##l  = vec_add( p_##j##_##l, vQP2);\
        const vector signed int diff_##j##_##l = vec_sub( p_##j##_##l, vQP2);\
        vector signed int newpm_##j##_##l;                              \
        if (vec_all_lt(sum_##j##_##l, F_##j##_##l))                     \
            newpm_##j##_##l = sum_##j##_##l;                            \
        else if (vec_all_gt(diff_##j##_##l, F_##j##_##l))               \
            newpm_##j##_##l = diff_##j##_##l;                           \
        else newpm_##j##_##l = F_##j##_##l;                             \
        const vector unsigned char newpm2_##j##_##l =                   \
            vec_splat((vector unsigned char)newpm_##j##_##l, 15);       \
        const vector unsigned char mask##j##l = vec_add(identity,       \
                                                        tenRightM##i);  \
        src##j = vec_perm(src##j, newpm2_##j##_##l, mask##j##l);        \
    }                                                                   \
    permA1M##i = vec_add(permA1M##i, permA1inc);                        \
    permA2M##i = vec_add(permA2M##i, permA2inc);                        \
    tenRightM##i = vec_sro(tenRightM##i, eightLeft);                    \
    extractPermM##i = vec_add(extractPermM##i, extractPermInc)
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#define ITER(i, j, k)                           \
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    F_INIT(i);                                  \
    F2(i, j, k, 0);                             \
    F2(i, j, k, 1);                             \
    F2(i, j, k, 2);                             \
    F2(i, j, k, 3);                             \
    F2(i, j, k, 4);                             \
    F2(i, j, k, 5);                             \
    F2(i, j, k, 6);                             \
    F2(i, j, k, 7)

    ITER(0, 1, 2);
    ITER(1, 2, 3);
    ITER(2, 3, 4);
    ITER(3, 4, 5);
    ITER(4, 5, 6);
    ITER(5, 6, 7);
    ITER(6, 7, 8);
    ITER(7, 8, 9);

    const vector signed char neg1 = vec_splat_s8(-1);
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#define STORE_LINE(i)                                   \
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    const vector unsigned char permST##i =              \
        vec_lvsr(i * stride, srcCopy);                  \
    const vector unsigned char maskST##i =              \
        vec_perm((vector unsigned char)zero,            \
                 (vector unsigned char)neg1, permST##i);\
    src##i = vec_perm(src##i ,src##i, permST##i);       \
    sA##i= vec_sel(sA##i, src##i, maskST##i);           \
    sB##i= vec_sel(src##i, sB##i, maskST##i);           \
    vec_st(sA##i, i * stride, srcCopy);                 \
    vec_st(sB##i, i * stride + 16, srcCopy)

    STORE_LINE(1);
    STORE_LINE(2);
    STORE_LINE(3);
    STORE_LINE(4);
    STORE_LINE(5);
    STORE_LINE(6);
    STORE_LINE(7);
    STORE_LINE(8);
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#undef STORE_LINE
#undef ITER
#undef F2
}

#define doHorizLowPass_altivec(a...) doHorizLowPass_C(a)
#define doHorizDefFilter_altivec(a...) doHorizDefFilter_C(a)
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#define do_a_deblock_altivec(a...) do_a_deblock_C(a)

static inline void RENAME(tempNoiseReducer)(uint8_t *src, int stride,
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                                            uint8_t *tempBlurred, uint32_t *tempBlurredPast, int *maxNoise)
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{
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    const vector signed int zero = vec_splat_s32(0);
    const vector signed short vsint16_1 = vec_splat_s16(1);
    vector signed int v_dp = zero;
    vector signed int v_sysdp = zero;
    int d, sysd, i;
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    tempBlurredPast[127]= maxNoise[0];
    tempBlurredPast[128]= maxNoise[1];
    tempBlurredPast[129]= maxNoise[2];
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#define LOAD_LINE(src, i)                                               \
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    register int j##src##i = i * stride;                                \
    vector unsigned char perm##src##i = vec_lvsl(j##src##i, src);       \
    const vector unsigned char v_##src##A1##i = vec_ld(j##src##i, src); \
    const vector unsigned char v_##src##A2##i = vec_ld(j##src##i + 16, src); \
    const vector unsigned char v_##src##A##i =                          \
        vec_perm(v_##src##A1##i, v_##src##A2##i, perm##src##i);         \
    vector signed short v_##src##Ass##i =                               \
        (vector signed short)vec_mergeh((vector signed char)zero,       \
                                        (vector signed char)v_##src##A##i)

    LOAD_LINE(src, 0);
    LOAD_LINE(src, 1);
    LOAD_LINE(src, 2);
    LOAD_LINE(src, 3);
    LOAD_LINE(src, 4);
    LOAD_LINE(src, 5);
    LOAD_LINE(src, 6);
    LOAD_LINE(src, 7);

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    LOAD_LINE(tempBlurred, 0);
    LOAD_LINE(tempBlurred, 1);
    LOAD_LINE(tempBlurred, 2);
    LOAD_LINE(tempBlurred, 3);
    LOAD_LINE(tempBlurred, 4);
    LOAD_LINE(tempBlurred, 5);
    LOAD_LINE(tempBlurred, 6);
    LOAD_LINE(tempBlurred, 7);
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#undef LOAD_LINE

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#define ACCUMULATE_DIFFS(i)                                     \
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    vector signed short v_d##i = vec_sub(v_tempBlurredAss##i,   \
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                                         v_srcAss##i);          \
    v_dp = vec_msums(v_d##i, v_d##i, v_dp);                     \
    v_sysdp = vec_msums(v_d##i, vsint16_1, v_sysdp)

    ACCUMULATE_DIFFS(0);
    ACCUMULATE_DIFFS(1);
    ACCUMULATE_DIFFS(2);
    ACCUMULATE_DIFFS(3);
    ACCUMULATE_DIFFS(4);
    ACCUMULATE_DIFFS(5);
    ACCUMULATE_DIFFS(6);
    ACCUMULATE_DIFFS(7);
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#undef ACCUMULATE_DIFFS

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    v_dp = vec_sums(v_dp, zero);
    v_sysdp = vec_sums(v_sysdp, zero);
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    v_dp = vec_splat(v_dp, 3);
    v_sysdp = vec_splat(v_sysdp, 3);
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    vec_ste(v_dp, 0, &d);
    vec_ste(v_sysdp, 0, &sysd);
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    i = d;
    d = (4*d
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         +(*(tempBlurredPast-256))
         +(*(tempBlurredPast-1))+ (*(tempBlurredPast+1))
         +(*(tempBlurredPast+256))
904
         +4)>>3;
905

906
    *tempBlurredPast=i;
907

908 909
    if (d > maxNoise[1]) {
        if (d < maxNoise[2]) {
910
#define OP(i) v_tempBlurredAss##i = vec_avg(v_tempBlurredAss##i, v_srcAss##i);
911

912 913 914 915 916 917 918 919
            OP(0);
            OP(1);
            OP(2);
            OP(3);
            OP(4);
            OP(5);
            OP(6);
            OP(7);
920
#undef OP
921
        } else {
922
#define OP(i) v_tempBlurredAss##i = v_srcAss##i;
923

924 925 926 927 928 929 930 931
            OP(0);
            OP(1);
            OP(2);
            OP(3);
            OP(4);
            OP(5);
            OP(6);
            OP(7);
932
#undef OP
933 934 935 936 937 938
        }
    } else {
        if (d < maxNoise[0]) {
            const vector signed short vsint16_7 = vec_splat_s16(7);
            const vector signed short vsint16_4 = vec_splat_s16(4);
            const vector unsigned short vuint16_3 = vec_splat_u16(3);
939

940
#define OP(i)                                                   \
941
            const vector signed short v_temp##i =               \
942
                vec_mladd(v_tempBlurredAss##i,                  \
943 944 945
                          vsint16_7, v_srcAss##i);              \
            const vector signed short v_temp2##i =              \
                vec_add(v_temp##i, vsint16_4);                  \
946
            v_tempBlurredAss##i = vec_sr(v_temp2##i, vuint16_3)
947 948 949 950 951 952 953 954 955

            OP(0);
            OP(1);
            OP(2);
            OP(3);
            OP(4);
            OP(5);
            OP(6);
            OP(7);
956
#undef OP
957 958 959
        } else {
            const vector signed short vsint16_3 = vec_splat_s16(3);
            const vector signed short vsint16_2 = vec_splat_s16(2);
960

961
#define OP(i)                                                   \
962
            const vector signed short v_temp##i =               \
963
                vec_mladd(v_tempBlurredAss##i,                  \
964 965 966
                          vsint16_3, v_srcAss##i);              \
            const vector signed short v_temp2##i =              \
                vec_add(v_temp##i, vsint16_2);                  \
967
            v_tempBlurredAss##i = vec_sr(v_temp2##i, (vector unsigned short)vsint16_2)
968 969 970 971 972 973 974 975 976

            OP(0);
            OP(1);
            OP(2);
            OP(3);
            OP(4);
            OP(5);
            OP(6);
            OP(7);
977
#undef OP
978
        }
979 980
    }

981
    const vector signed char neg1 = vec_splat_s8(-1);
982 983
    const vector unsigned char permHH = (const vector unsigned char){0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
                                                                     0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F};
984 985

#define PACK_AND_STORE(src, i)                                  \
986 987 988
    const vector unsigned char perms##src##i =                  \
        vec_lvsr(i * stride, src);                              \
    const vector unsigned char vf##src##i =                     \
989
        vec_packsu(v_tempBlurredAss##i, (vector signed short)zero); \
990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010
    const vector unsigned char vg##src##i =                     \
        vec_perm(vf##src##i, v_##src##A##i, permHH);            \
    const vector unsigned char mask##src##i =                   \
        vec_perm((vector unsigned char)zero, (vector unsigned char)neg1, perms##src##i); \
    const vector unsigned char vg2##src##i =                    \
        vec_perm(vg##src##i, vg##src##i, perms##src##i);        \
    const vector unsigned char svA##src##i =                    \
        vec_sel(v_##src##A1##i, vg2##src##i, mask##src##i);     \
    const vector unsigned char svB##src##i =                    \
        vec_sel(vg2##src##i, v_##src##A2##i, mask##src##i);     \
    vec_st(svA##src##i, i * stride, src);                       \
    vec_st(svB##src##i, i * stride + 16, src)

    PACK_AND_STORE(src, 0);
    PACK_AND_STORE(src, 1);
    PACK_AND_STORE(src, 2);
    PACK_AND_STORE(src, 3);
    PACK_AND_STORE(src, 4);
    PACK_AND_STORE(src, 5);
    PACK_AND_STORE(src, 6);
    PACK_AND_STORE(src, 7);
1011 1012 1013 1014 1015 1016 1017 1018
    PACK_AND_STORE(tempBlurred, 0);
    PACK_AND_STORE(tempBlurred, 1);
    PACK_AND_STORE(tempBlurred, 2);
    PACK_AND_STORE(tempBlurred, 3);
    PACK_AND_STORE(tempBlurred, 4);
    PACK_AND_STORE(tempBlurred, 5);
    PACK_AND_STORE(tempBlurred, 6);
    PACK_AND_STORE(tempBlurred, 7);
1019 1020
#undef PACK_AND_STORE
}
1021 1022

static inline void transpose_16x8_char_toPackedAlign_altivec(unsigned char* dst, unsigned char* src, int stride) {
1023
    const vector unsigned char zero = vec_splat_u8(0);
1024

1025
#define LOAD_DOUBLE_LINE(i, j)                                          \
1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038
    vector unsigned char perm1##i = vec_lvsl(i * stride, src);          \
    vector unsigned char perm2##i = vec_lvsl(j * stride, src);          \
    vector unsigned char srcA##i = vec_ld(i * stride, src);             \
    vector unsigned char srcB##i = vec_ld(i * stride + 16, src);        \
    vector unsigned char srcC##i = vec_ld(j * stride, src);             \
    vector unsigned char srcD##i = vec_ld(j * stride+ 16, src);         \
    vector unsigned char src##i = vec_perm(srcA##i, srcB##i, perm1##i); \
    vector unsigned char src##j = vec_perm(srcC##i, srcD##i, perm2##i)

    LOAD_DOUBLE_LINE(0, 1);
    LOAD_DOUBLE_LINE(2, 3);
    LOAD_DOUBLE_LINE(4, 5);
    LOAD_DOUBLE_LINE(6, 7);
1039 1040
#undef LOAD_DOUBLE_LINE

1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057
    vector unsigned char tempA = vec_mergeh(src0, zero);
    vector unsigned char tempB = vec_mergel(src0, zero);
    vector unsigned char tempC = vec_mergeh(src1, zero);
    vector unsigned char tempD = vec_mergel(src1, zero);
    vector unsigned char tempE = vec_mergeh(src2, zero);
    vector unsigned char tempF = vec_mergel(src2, zero);
    vector unsigned char tempG = vec_mergeh(src3, zero);
    vector unsigned char tempH = vec_mergel(src3, zero);
    vector unsigned char tempI = vec_mergeh(src4, zero);
    vector unsigned char tempJ = vec_mergel(src4, zero);
    vector unsigned char tempK = vec_mergeh(src5, zero);
    vector unsigned char tempL = vec_mergel(src5, zero);
    vector unsigned char tempM = vec_mergeh(src6, zero);
    vector unsigned char tempN = vec_mergel(src6, zero);
    vector unsigned char tempO = vec_mergeh(src7, zero);
    vector unsigned char tempP = vec_mergel(src7, zero);

1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
    vector unsigned char temp0  = vec_mergeh(tempA, tempI);
    vector unsigned char temp1  = vec_mergel(tempA, tempI);
    vector unsigned char temp2  = vec_mergeh(tempB, tempJ);
    vector unsigned char temp3  = vec_mergel(tempB, tempJ);
    vector unsigned char temp4  = vec_mergeh(tempC, tempK);
    vector unsigned char temp5  = vec_mergel(tempC, tempK);
    vector unsigned char temp6  = vec_mergeh(tempD, tempL);
    vector unsigned char temp7  = vec_mergel(tempD, tempL);
    vector unsigned char temp8  = vec_mergeh(tempE, tempM);
    vector unsigned char temp9  = vec_mergel(tempE, tempM);
1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
    vector unsigned char temp10 = vec_mergeh(tempF, tempN);
    vector unsigned char temp11 = vec_mergel(tempF, tempN);
    vector unsigned char temp12 = vec_mergeh(tempG, tempO);
    vector unsigned char temp13 = vec_mergel(tempG, tempO);
    vector unsigned char temp14 = vec_mergeh(tempH, tempP);
    vector unsigned char temp15 = vec_mergel(tempH, tempP);

    tempA = vec_mergeh(temp0, temp8);
    tempB = vec_mergel(temp0, temp8);
    tempC = vec_mergeh(temp1, temp9);
    tempD = vec_mergel(temp1, temp9);
    tempE = vec_mergeh(temp2, temp10);
    tempF = vec_mergel(temp2, temp10);
    tempG = vec_mergeh(temp3, temp11);
    tempH = vec_mergel(temp3, temp11);
    tempI = vec_mergeh(temp4, temp12);
    tempJ = vec_mergel(temp4, temp12);
    tempK = vec_mergeh(temp5, temp13);
    tempL = vec_mergel(temp5, temp13);
    tempM = vec_mergeh(temp6, temp14);
    tempN = vec_mergel(temp6, temp14);
    tempO = vec_mergeh(temp7, temp15);
    tempP = vec_mergel(temp7, temp15);

1092 1093 1094 1095 1096 1097 1098 1099 1100 1101
    temp0  = vec_mergeh(tempA, tempI);
    temp1  = vec_mergel(tempA, tempI);
    temp2  = vec_mergeh(tempB, tempJ);
    temp3  = vec_mergel(tempB, tempJ);
    temp4  = vec_mergeh(tempC, tempK);
    temp5  = vec_mergel(tempC, tempK);
    temp6  = vec_mergeh(tempD, tempL);
    temp7  = vec_mergel(tempD, tempL);
    temp8  = vec_mergeh(tempE, tempM);
    temp9  = vec_mergel(tempE, tempM);
1102 1103 1104 1105 1106 1107 1108
    temp10 = vec_mergeh(tempF, tempN);
    temp11 = vec_mergel(tempF, tempN);
    temp12 = vec_mergeh(tempG, tempO);
    temp13 = vec_mergel(tempG, tempO);
    temp14 = vec_mergeh(tempH, tempP);
    temp15 = vec_mergel(tempH, tempP);

1109 1110 1111 1112 1113 1114 1115 1116 1117 1118
    vec_st(temp0,    0, dst);
    vec_st(temp1,   16, dst);
    vec_st(temp2,   32, dst);
    vec_st(temp3,   48, dst);
    vec_st(temp4,   64, dst);
    vec_st(temp5,   80, dst);
    vec_st(temp6,   96, dst);
    vec_st(temp7,  112, dst);
    vec_st(temp8,  128, dst);
    vec_st(temp9,  144, dst);
1119 1120 1121 1122 1123 1124
    vec_st(temp10, 160, dst);
    vec_st(temp11, 176, dst);
    vec_st(temp12, 192, dst);
    vec_st(temp13, 208, dst);
    vec_st(temp14, 224, dst);
    vec_st(temp15, 240, dst);
1125 1126 1127
}

static inline void transpose_8x16_char_fromPackedAlign_altivec(unsigned char* dst, unsigned char* src, int stride) {
1128
    const vector unsigned char zero = vec_splat_u8(0);
1129

1130
#define LOAD_DOUBLE_LINE(i, j)                                  \
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141
    vector unsigned char src##i = vec_ld(i * 16, src);            \
    vector unsigned char src##j = vec_ld(j * 16, src)

    LOAD_DOUBLE_LINE(0, 1);
    LOAD_DOUBLE_LINE(2, 3);
    LOAD_DOUBLE_LINE(4, 5);
    LOAD_DOUBLE_LINE(6, 7);
    LOAD_DOUBLE_LINE(8, 9);
    LOAD_DOUBLE_LINE(10, 11);
    LOAD_DOUBLE_LINE(12, 13);
    LOAD_DOUBLE_LINE(14, 15);
1142 1143
#undef LOAD_DOUBLE_LINE

1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189
    vector unsigned char tempA = vec_mergeh(src0, src8);
    vector unsigned char tempB;
    vector unsigned char tempC = vec_mergeh(src1, src9);
    vector unsigned char tempD;
    vector unsigned char tempE = vec_mergeh(src2, src10);
    vector unsigned char tempG = vec_mergeh(src3, src11);
    vector unsigned char tempI = vec_mergeh(src4, src12);
    vector unsigned char tempJ;
    vector unsigned char tempK = vec_mergeh(src5, src13);
    vector unsigned char tempL;
    vector unsigned char tempM = vec_mergeh(src6, src14);
    vector unsigned char tempO = vec_mergeh(src7, src15);

    vector unsigned char temp0 = vec_mergeh(tempA, tempI);
    vector unsigned char temp1 = vec_mergel(tempA, tempI);
    vector unsigned char temp2;
    vector unsigned char temp3;
    vector unsigned char temp4 = vec_mergeh(tempC, tempK);
    vector unsigned char temp5 = vec_mergel(tempC, tempK);
    vector unsigned char temp6;
    vector unsigned char temp7;
    vector unsigned char temp8 = vec_mergeh(tempE, tempM);
    vector unsigned char temp9 = vec_mergel(tempE, tempM);
    vector unsigned char temp12 = vec_mergeh(tempG, tempO);
    vector unsigned char temp13 = vec_mergel(tempG, tempO);

    tempA = vec_mergeh(temp0, temp8);
    tempB = vec_mergel(temp0, temp8);
    tempC = vec_mergeh(temp1, temp9);
    tempD = vec_mergel(temp1, temp9);
    tempI = vec_mergeh(temp4, temp12);
    tempJ = vec_mergel(temp4, temp12);
    tempK = vec_mergeh(temp5, temp13);
    tempL = vec_mergel(temp5, temp13);

    temp0 = vec_mergeh(tempA, tempI);
    temp1 = vec_mergel(tempA, tempI);
    temp2 = vec_mergeh(tempB, tempJ);
    temp3 = vec_mergel(tempB, tempJ);
    temp4 = vec_mergeh(tempC, tempK);
    temp5 = vec_mergel(tempC, tempK);
    temp6 = vec_mergeh(tempD, tempL);
    temp7 = vec_mergel(tempD, tempL);


    const vector signed char neg1 = vec_splat_s8(-1);
1190
#define STORE_DOUBLE_LINE(i, j)                                         \
1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213
    vector unsigned char dstA##i = vec_ld(i * stride, dst);             \
    vector unsigned char dstB##i = vec_ld(i * stride + 16, dst);        \
    vector unsigned char dstA##j = vec_ld(j * stride, dst);             \
    vector unsigned char dstB##j = vec_ld(j * stride+ 16, dst);         \
    vector unsigned char align##i = vec_lvsr(i * stride, dst);          \
    vector unsigned char align##j = vec_lvsr(j * stride, dst);          \
    vector unsigned char mask##i = vec_perm(zero, (vector unsigned char)neg1, align##i); \
    vector unsigned char mask##j = vec_perm(zero, (vector unsigned char)neg1, align##j); \
    vector unsigned char dstR##i = vec_perm(temp##i, temp##i, align##i);\
    vector unsigned char dstR##j = vec_perm(temp##j, temp##j, align##j);\
    vector unsigned char dstAF##i = vec_sel(dstA##i, dstR##i, mask##i); \
    vector unsigned char dstBF##i = vec_sel(dstR##i, dstB##i, mask##i); \
    vector unsigned char dstAF##j = vec_sel(dstA##j, dstR##j, mask##j); \
    vector unsigned char dstBF##j = vec_sel(dstR##j, dstB##j, mask##j); \
    vec_st(dstAF##i, i * stride, dst);                                  \
    vec_st(dstBF##i, i * stride + 16, dst);                             \
    vec_st(dstAF##j, j * stride, dst);                                  \
    vec_st(dstBF##j, j * stride + 16, dst)

    STORE_DOUBLE_LINE(0,1);
    STORE_DOUBLE_LINE(2,3);
    STORE_DOUBLE_LINE(4,5);
    STORE_DOUBLE_LINE(6,7);
1214
}