/*
 *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include <assert.h>
#include <stdio.h>

#include "./vpx_dsp_rtcd.h"
#include "vpx_dsp/mips/convolve_common_dspr2.h"
#include "vpx_dsp/vpx_dsp_common.h"
#include "vpx_dsp/vpx_filter.h"
#include "vpx_ports/mem.h"

#if HAVE_DSPR2
static void convolve_bi_horiz_4_transposed_dspr2(const uint8_t *src,
                                                 int32_t src_stride,
                                                 uint8_t *dst,
                                                 int32_t dst_stride,
                                                 const int16_t *filter_x0,
                                                 int32_t h) {
  int32_t       y;
  uint8_t       *cm = vpx_ff_cropTbl;
  uint8_t       *dst_ptr;
  int32_t       Temp1, Temp2;
  uint32_t      vector4a = 64;
  uint32_t      tp1, tp2;
  uint32_t      p1, p2;
  const int16_t *filter = &filter_x0[3];
  uint32_t      filter45;

  filter45 = ((const int32_t *)filter)[0];

  for (y = h; y--;) {
    dst_ptr = dst;
    /* prefetch data to cache memory */
    prefetch_load(src + src_stride);
    prefetch_load(src + src_stride + 32);

    __asm__ __volatile__ (
        "ulw              %[tp1],         0(%[src])                      \n\t"
        "ulw              %[tp2],         4(%[src])                      \n\t"

        /* even 1. pixel */
        "mtlo             %[vector4a],    $ac3                           \n\t"
        "mthi             $zero,          $ac3                           \n\t"
        "preceu.ph.qbr    %[p1],          %[tp1]                         \n\t"
        "preceu.ph.qbl    %[p2],          %[tp1]                         \n\t"
        "dpa.w.ph         $ac3,           %[p1],          %[filter45]    \n\t"
        "extp             %[Temp1],       $ac3,           31             \n\t"

        /* even 2. pixel */
        "mtlo             %[vector4a],    $ac2                           \n\t"
        "mthi             $zero,          $ac2                           \n\t"
        "balign           %[tp2],         %[tp1],         3              \n\t"
        "dpa.w.ph         $ac2,           %[p2],          %[filter45]    \n\t"
        "extp             %[Temp2],       $ac2,           31             \n\t"

        /* odd 1. pixel */
        "lbux             %[tp1],         %[Temp1](%[cm])                \n\t"
        "mtlo             %[vector4a],    $ac3                           \n\t"
        "mthi             $zero,          $ac3                           \n\t"
        "preceu.ph.qbr    %[p1],          %[tp2]                         \n\t"
        "preceu.ph.qbl    %[p2],          %[tp2]                         \n\t"
        "dpa.w.ph         $ac3,           %[p1],          %[filter45]    \n\t"
        "extp             %[Temp1],       $ac3,           31             \n\t"

        /* odd 2. pixel */
        "lbux             %[tp2],         %[Temp2](%[cm])                \n\t"
        "mtlo             %[vector4a],    $ac2                           \n\t"
        "mthi             $zero,          $ac2                           \n\t"
        "dpa.w.ph         $ac2,           %[p2],          %[filter45]    \n\t"
        "extp             %[Temp2],       $ac2,           31             \n\t"

        /* clamp */
        "lbux             %[p1],          %[Temp1](%[cm])                \n\t"
        "lbux             %[p2],          %[Temp2](%[cm])                \n\t"

        /* store bytes */
        "sb               %[tp1],         0(%[dst_ptr])                  \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_stride]  \n\t"

        "sb               %[p1],          0(%[dst_ptr])                  \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_stride]  \n\t"

        "sb               %[tp2],         0(%[dst_ptr])                  \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_stride]  \n\t"

        "sb               %[p2],          0(%[dst_ptr])                  \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_stride]  \n\t"

        : [tp1] "=&r" (tp1), [tp2] "=&r" (tp2),
          [p1] "=&r" (p1), [p2] "=&r" (p2),
          [Temp1] "=&r" (Temp1), [Temp2] "=&r" (Temp2),
          [dst_ptr] "+r" (dst_ptr)
        : [filter45] "r" (filter45),[vector4a] "r" (vector4a),
          [cm] "r" (cm), [src] "r" (src), [dst_stride] "r" (dst_stride)
    );

    /* Next row... */
    src += src_stride;
    dst += 1;
  }
}

static void convolve_bi_horiz_8_transposed_dspr2(const uint8_t *src,
                                                 int32_t src_stride,
                                                 uint8_t *dst,
                                                 int32_t dst_stride,
                                                 const int16_t *filter_x0,
                                                 int32_t h) {
  int32_t y;
  uint8_t *cm = vpx_ff_cropTbl;
  uint8_t *dst_ptr;
  uint32_t vector4a = 64;
  int32_t Temp1, Temp2, Temp3;
  uint32_t tp1, tp2, tp3;
  uint32_t p1, p2, p3, p4;
  uint8_t *odd_dst;
  uint32_t dst_pitch_2 = (dst_stride << 1);
  const int16_t *filter = &filter_x0[3];
  uint32_t      filter45;

  filter45 = ((const int32_t *)filter)[0];

  for (y = h; y--;) {
    /* prefetch data to cache memory */
    prefetch_load(src + src_stride);
    prefetch_load(src + src_stride + 32);

    dst_ptr = dst;
    odd_dst = (dst_ptr + dst_stride);

    __asm__ __volatile__ (
        "ulw              %[tp1],         0(%[src])                       \n\t"
        "ulw              %[tp2],         4(%[src])                       \n\t"

        /* even 1. pixel */
        "mtlo             %[vector4a],    $ac3                            \n\t"
        "mthi             $zero,          $ac3                            \n\t"
        "mtlo             %[vector4a],    $ac2                            \n\t"
        "mthi             $zero,          $ac2                            \n\t"
        "preceu.ph.qbr    %[p1],          %[tp1]                          \n\t"
        "preceu.ph.qbl    %[p2],          %[tp1]                          \n\t"
        "preceu.ph.qbr    %[p3],          %[tp2]                          \n\t"
        "preceu.ph.qbl    %[p4],          %[tp2]                          \n\t"
        "ulw              %[tp3],         8(%[src])                       \n\t"
        "dpa.w.ph         $ac3,           %[p1],          %[filter45]     \n\t"
        "extp             %[Temp1],       $ac3,           31              \n\t"

        /* even 2. pixel */
        "dpa.w.ph         $ac2,           %[p2],          %[filter45]     \n\t"
        "extp             %[Temp3],       $ac2,           31              \n\t"

        /* even 3. pixel */
        "lbux             %[Temp2],       %[Temp1](%[cm])                 \n\t"
        "mtlo             %[vector4a],    $ac1                            \n\t"
        "mthi             $zero,          $ac1                            \n\t"
        "balign           %[tp3],         %[tp2],         3              \n\t"
        "balign           %[tp2],         %[tp1],         3              \n\t"
        "dpa.w.ph         $ac1,           %[p3],          %[filter45]     \n\t"
        "lbux             %[tp1],         %[Temp3](%[cm])                 \n\t"
        "extp             %[p3],          $ac1,           31              \n\t"

        /* even 4. pixel */
        "mtlo             %[vector4a],    $ac2                            \n\t"
        "mthi             $zero,          $ac2                            \n\t"
        "mtlo             %[vector4a],    $ac3                            \n\t"
        "mthi             $zero,          $ac3                            \n\t"
        "sb               %[Temp2],       0(%[dst_ptr])                   \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_pitch_2]  \n\t"
        "sb               %[tp1],         0(%[dst_ptr])                   \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_pitch_2]  \n\t"

        "dpa.w.ph         $ac2,           %[p4],          %[filter45]     \n\t"
        "extp             %[Temp3],       $ac2,           31              \n\t"

        "lbux             %[Temp1],         %[p3](%[cm])                    \n\t"

        /* odd 1. pixel */
        "mtlo             %[vector4a],    $ac1                            \n\t"
        "mthi             $zero,          $ac1                            \n\t"
        "preceu.ph.qbr    %[p1],          %[tp2]                          \n\t"
        "preceu.ph.qbl    %[p2],          %[tp2]                          \n\t"
        "preceu.ph.qbr    %[p3],          %[tp3]                          \n\t"
        "preceu.ph.qbl    %[p4],          %[tp3]                          \n\t"
        "sb               %[Temp1],       0(%[dst_ptr])                   \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_pitch_2]  \n\t"

        "dpa.w.ph         $ac3,           %[p1],          %[filter45]     \n\t"
        "extp             %[Temp2],       $ac3,           31              \n\t"

        /* odd 2. pixel */
        "lbux             %[tp1],         %[Temp3](%[cm])                 \n\t"
        "mtlo             %[vector4a],    $ac3                            \n\t"
        "mthi             $zero,          $ac3                            \n\t"
        "mtlo             %[vector4a],    $ac2                            \n\t"
        "mthi             $zero,          $ac2                            \n\t"
        "dpa.w.ph         $ac1,           %[p2],          %[filter45]     \n\t"
        "sb               %[tp1],         0(%[dst_ptr])                   \n\t"
        "addu             %[dst_ptr],     %[dst_ptr],     %[dst_pitch_2]  \n\t"
        "extp             %[Temp3],       $ac1,           31              \n\t"

        /* odd 3. pixel */
        "lbux             %[tp3],         %[Temp2](%[cm])                 \n\t"
        "dpa.w.ph         $ac3,           %[p3],          %[filter45]     \n\t"
        "extp             %[Temp2],       $ac3,           31              \n\t"

        /* odd 4. pixel */
        "sb               %[tp3],         0(%[odd_dst])                   \n\t"
        "addu             %[odd_dst],     %[odd_dst],     %[dst_pitch_2]  \n\t"
        "dpa.w.ph         $ac2,           %[p4],          %[filter45]     \n\t"
        "extp             %[Temp1],       $ac2,           31              \n\t"

        /* clamp */
        "lbux             %[p4],          %[Temp3](%[cm])                 \n\t"
        "lbux             %[p2],          %[Temp2](%[cm])                 \n\t"
        "lbux             %[p1],          %[Temp1](%[cm])                 \n\t"

        /* store bytes */
        "sb               %[p4],          0(%[odd_dst])                   \n\t"
        "addu             %[odd_dst],     %[odd_dst],     %[dst_pitch_2]  \n\t"

        "sb               %[p2],          0(%[odd_dst])                   \n\t"
        "addu             %[odd_dst],     %[odd_dst],     %[dst_pitch_2]  \n\t"

        "sb               %[p1],          0(%[odd_dst])                   \n\t"

        : [tp1] "=&r" (tp1), [tp2] "=&r" (tp2), [tp3] "=&r" (tp3),
          [p1] "=&r" (p1), [p2] "=&r" (p2), [p3] "=&r" (p3), [p4] "=&r" (p4),
          [Temp1] "=&r" (Temp1), [Temp2] "=&r" (Temp2), [Temp3] "=&r" (Temp3),
          [dst_ptr] "+r" (dst_ptr), [odd_dst] "+r" (odd_dst)
        : [filter45] "r" (filter45),[vector4a] "r" (vector4a), [cm] "r" (cm),
          [src] "r" (src), [dst_pitch_2] "r" (dst_pitch_2)
    );

    /* Next row... */
    src += src_stride;
    dst += 1;
  }
}

static void convolve_bi_horiz_16_transposed_dspr2(const uint8_t *src_ptr,
                                                  int32_t src_stride,
                                                  uint8_t *dst_ptr,
                                                  int32_t dst_stride,
                                                  const int16_t *filter_x0,
                                                  int32_t h,
                                                  int32_t count) {
  int32_t       c, y;
  const uint8_t *src;
  uint8_t       *dst;
  uint8_t       *cm = vpx_ff_cropTbl;
  uint32_t      vector_64 = 64;
  int32_t       Temp1, Temp2, Temp3;
  uint32_t      qload1, qload2;
  uint32_t      p1, p2, p3, p4, p5;
  uint32_t      st1, st2, st3;
  uint32_t      dst_pitch_2 = (dst_stride << 1);
  uint8_t       *odd_dst;
  const int16_t *filter = &filter_x0[3];
  uint32_t      filter45;

  filter45 = ((const int32_t *)filter)[0];

  for (y = h; y--;) {
    /* prefetch data to cache memory */
    prefetch_load(src_ptr + src_stride);
    prefetch_load(src_ptr + src_stride + 32);

    src = src_ptr;
    dst = dst_ptr;

    odd_dst = (dst + dst_stride);

    for (c = 0; c < count; c++) {
      __asm__ __volatile__ (
          "ulw              %[qload1],        0(%[src])                       \n\t"
          "ulw              %[qload2],        4(%[src])                       \n\t"

          /* even 1. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* even 1 */
          "mthi             $zero,            $ac1                            \n\t"
          "mtlo             %[vector_64],     $ac2                            \n\t" /* even 2 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload1]                       \n\t"
          "preceu.ph.qbl    %[p2],            %[qload1]                       \n\t"
          "preceu.ph.qbr    %[p3],            %[qload2]                       \n\t"
          "preceu.ph.qbl    %[p4],            %[qload2]                       \n\t"
          "ulw              %[qload1],        8(%[src])                       \n\t"
          "dpa.w.ph         $ac1,             %[p1],          %[filter45]     \n\t" /* even 1 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* even 1 */

          /* even 2. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* even 3 */
          "mthi             $zero,            $ac3                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload1]                       \n\t"
          "preceu.ph.qbl    %[p5],            %[qload1]                       \n\t"
          "ulw              %[qload2],        12(%[src])                      \n\t"
          "dpa.w.ph         $ac2,             %[p2],          %[filter45]     \n\t" /* even 1 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* even 1 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* even 1 */

          /* even 3. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* even 4 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbr    %[p2],            %[qload2]                       \n\t"
          "sb               %[st1],           0(%[dst])                       \n\t" /* even 1 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]             \n\t"
          "dpa.w.ph         $ac3,             %[p3],          %[filter45]     \n\t" /* even 3 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* even 3 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* even 1 */

          /* even 4. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* even 5 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbl    %[p3],            %[qload2]                       \n\t"
          "sb               %[st2],           0(%[dst])                       \n\t" /* even 2 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac1,             %[p4],          %[filter45]     \n\t" /* even 4 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* even 4 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* even 3 */

          /* even 5. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* even 6 */
          "mthi             $zero,            $ac3                            \n\t"
          "sb               %[st3],           0(%[dst])                       \n\t" /* even 3 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac2,             %[p1],          %[filter45]     \n\t" /* even 5 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* even 5 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* even 4 */

          /* even 6. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* even 7 */
          "mthi             $zero,            $ac1                            \n\t"
          "sb               %[st1],           0(%[dst])                       \n\t" /* even 4 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "ulw              %[qload1],        20(%[src])                      \n\t"
          "dpa.w.ph         $ac3,             %[p5],          %[filter45]     \n\t" /* even 6 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* even 6 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* even 5 */

          /* even 7. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* even 8 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbr    %[p5],            %[qload1]                       \n\t"
          "sb               %[st2],           0(%[dst])                       \n\t" /* even 5 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac1,             %[p2],          %[filter45]     \n\t" /* even 7 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* even 7 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* even 6 */

          /* even 8. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* odd 1 */
          "mthi             $zero,            $ac3                            \n\t"
          "dpa.w.ph         $ac2,             %[p3],          %[filter45]     \n\t" /* even 8 */
          "sb               %[st3],           0(%[dst])                       \n\t" /* even 6 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "extp             %[Temp2],         $ac2,           31              \n\t" /* even 8 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* even 7 */

          /* ODD pixels */
          "ulw              %[qload1],        1(%[src])                       \n\t"
          "ulw              %[qload2],        5(%[src])                       \n\t"

          /* odd 1. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* odd 2 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload1]                       \n\t"
          "preceu.ph.qbl    %[p2],            %[qload1]                       \n\t"
          "preceu.ph.qbr    %[p3],            %[qload2]                       \n\t"
          "preceu.ph.qbl    %[p4],            %[qload2]                       \n\t"
          "sb               %[st1],           0(%[dst])                       \n\t" /* even 7 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "ulw              %[qload2],        9(%[src])                       \n\t"
          "dpa.w.ph         $ac3,             %[p1],          %[filter45]     \n\t" /* odd 1 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* odd 1 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* even 8 */

          /* odd 2. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* odd 3 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload2]                       \n\t"
          "preceu.ph.qbl    %[p5],            %[qload2]                       \n\t"
          "sb               %[st2],           0(%[dst])                       \n\t" /* even 8 */
          "ulw              %[qload1],        13(%[src])                      \n\t"
          "dpa.w.ph         $ac1,             %[p2],          %[filter45]     \n\t" /* odd 2 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* odd 2 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* odd 1 */

          /* odd 3. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* odd 4 */
          "mthi             $zero,            $ac3                            \n\t"
          "preceu.ph.qbr    %[p2],            %[qload1]                       \n\t"
          "sb               %[st3],           0(%[odd_dst])                   \n\t" /* odd 1 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac2,             %[p3],          %[filter45]     \n\t" /* odd 3 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* odd 3 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* odd 2 */

          /* odd 4. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* odd 5 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbl    %[p3],            %[qload1]                       \n\t"
          "sb               %[st1],           0(%[odd_dst])                   \n\t" /* odd 2 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac3,             %[p4],          %[filter45]     \n\t" /* odd 4 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* odd 4 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* odd 3 */

          /* odd 5. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* odd 6 */
          "mthi             $zero,            $ac2                            \n\t"
          "sb               %[st2],           0(%[odd_dst])                   \n\t" /* odd 3 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac1,             %[p1],          %[filter45]     \n\t" /* odd 5 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* odd 5 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* odd 4 */

          /* odd 6. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* odd 7 */
          "mthi             $zero,            $ac3                            \n\t"
          "sb               %[st3],           0(%[odd_dst])                   \n\t" /* odd 4 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "ulw              %[qload1],        21(%[src])                      \n\t"
          "dpa.w.ph         $ac2,             %[p5],          %[filter45]     \n\t" /* odd 6 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* odd 6 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* odd 5 */

          /* odd 7. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* odd 8 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbr    %[p5],            %[qload1]                       \n\t"
          "sb               %[st1],           0(%[odd_dst])                   \n\t" /* odd 5 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac3,             %[p2],          %[filter45]     \n\t" /* odd 7 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* odd 7 */

          /* odd 8. pixel */
          "dpa.w.ph         $ac1,             %[p3],          %[filter45]     \n\t" /* odd 8 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* odd 8 */

          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* odd 6 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* odd 7 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* odd 8 */

          "sb               %[st2],           0(%[odd_dst])                   \n\t" /* odd 6 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"

          "sb               %[st3],           0(%[odd_dst])                   \n\t" /* odd 7 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"

          "sb               %[st1],           0(%[odd_dst])                   \n\t" /* odd 8 */

          : [qload1] "=&r" (qload1), [qload2] "=&r" (qload2), [p5] "=&r" (p5),
            [st1] "=&r" (st1), [st2] "=&r" (st2), [st3] "=&r" (st3),
            [p1] "=&r" (p1), [p2] "=&r" (p2), [p3] "=&r" (p3), [p4] "=&r" (p4),
            [Temp1] "=&r" (Temp1), [Temp2] "=&r" (Temp2), [Temp3] "=&r" (Temp3),
            [dst] "+r" (dst), [odd_dst] "+r" (odd_dst)
          : [filter45] "r" (filter45), [vector_64] "r" (vector_64),
            [cm] "r" (cm),
            [src] "r" (src), [dst_pitch_2] "r" (dst_pitch_2)
      );

      src += 16;
      dst = (dst_ptr + ((c + 1) * 16 * dst_stride));
      odd_dst = (dst + dst_stride);
    }

    /* Next row... */
    src_ptr += src_stride;
    dst_ptr += 1;
  }
}

static void convolve_bi_horiz_64_transposed_dspr2(const uint8_t *src_ptr,
                                                  int32_t src_stride,
                                                  uint8_t *dst_ptr,
                                                  int32_t dst_stride,
                                                  const int16_t *filter_x0,
                                                  int32_t h) {
  int32_t       c, y;
  const uint8_t *src;
  uint8_t       *dst;
  uint8_t       *cm = vpx_ff_cropTbl;
  uint32_t      vector_64 = 64;
  int32_t       Temp1, Temp2, Temp3;
  uint32_t      qload1, qload2;
  uint32_t      p1, p2, p3, p4, p5;
  uint32_t      st1, st2, st3;
  uint32_t      dst_pitch_2 = (dst_stride << 1);
  uint8_t       *odd_dst;
  const int16_t *filter = &filter_x0[3];
  uint32_t      filter45;

  filter45 = ((const int32_t *)filter)[0];

  for (y = h; y--;) {
    /* prefetch data to cache memory */
    prefetch_load(src_ptr + src_stride);
    prefetch_load(src_ptr + src_stride + 32);
    prefetch_load(src_ptr + src_stride + 64);

    src = src_ptr;
    dst = dst_ptr;

    odd_dst = (dst + dst_stride);

    for (c = 0; c < 4; c++) {
      __asm__ __volatile__ (
          "ulw              %[qload1],        0(%[src])                       \n\t"
          "ulw              %[qload2],        4(%[src])                       \n\t"

          /* even 1. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* even 1 */
          "mthi             $zero,            $ac1                            \n\t"
          "mtlo             %[vector_64],     $ac2                            \n\t" /* even 2 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload1]                       \n\t"
          "preceu.ph.qbl    %[p2],            %[qload1]                       \n\t"
          "preceu.ph.qbr    %[p3],            %[qload2]                       \n\t"
          "preceu.ph.qbl    %[p4],            %[qload2]                       \n\t"
          "ulw              %[qload1],        8(%[src])                       \n\t"
          "dpa.w.ph         $ac1,             %[p1],          %[filter45]     \n\t" /* even 1 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* even 1 */

          /* even 2. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* even 3 */
          "mthi             $zero,            $ac3                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload1]                       \n\t"
          "preceu.ph.qbl    %[p5],            %[qload1]                       \n\t"
          "ulw              %[qload2],        12(%[src])                      \n\t"
          "dpa.w.ph         $ac2,             %[p2],          %[filter45]     \n\t" /* even 1 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* even 1 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* even 1 */

          /* even 3. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* even 4 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbr    %[p2],            %[qload2]                       \n\t"
          "sb               %[st1],           0(%[dst])                       \n\t" /* even 1 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]             \n\t"
          "dpa.w.ph         $ac3,             %[p3],          %[filter45]     \n\t" /* even 3 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* even 3 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* even 1 */

          /* even 4. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* even 5 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbl    %[p3],            %[qload2]                       \n\t"
          "sb               %[st2],           0(%[dst])                       \n\t" /* even 2 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac1,             %[p4],          %[filter45]     \n\t" /* even 4 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* even 4 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* even 3 */

          /* even 5. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* even 6 */
          "mthi             $zero,            $ac3                            \n\t"
          "sb               %[st3],           0(%[dst])                       \n\t" /* even 3 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac2,             %[p1],          %[filter45]     \n\t" /* even 5 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* even 5 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* even 4 */

          /* even 6. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* even 7 */
          "mthi             $zero,            $ac1                            \n\t"
          "sb               %[st1],           0(%[dst])                       \n\t" /* even 4 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "ulw              %[qload1],        20(%[src])                      \n\t"
          "dpa.w.ph         $ac3,             %[p5],          %[filter45]     \n\t" /* even 6 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* even 6 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* even 5 */

          /* even 7. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* even 8 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbr    %[p5],            %[qload1]                       \n\t"
          "sb               %[st2],           0(%[dst])                       \n\t" /* even 5 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac1,             %[p2],          %[filter45]     \n\t" /* even 7 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* even 7 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* even 6 */

          /* even 8. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* odd 1 */
          "mthi             $zero,            $ac3                            \n\t"
          "dpa.w.ph         $ac2,             %[p3],          %[filter45]     \n\t" /* even 8 */
          "sb               %[st3],           0(%[dst])                       \n\t" /* even 6 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "extp             %[Temp2],         $ac2,           31              \n\t" /* even 8 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* even 7 */

          /* ODD pixels */
          "ulw              %[qload1],        1(%[src])                       \n\t"
          "ulw              %[qload2],        5(%[src])                       \n\t"

          /* odd 1. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* odd 2 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload1]                       \n\t"
          "preceu.ph.qbl    %[p2],            %[qload1]                       \n\t"
          "preceu.ph.qbr    %[p3],            %[qload2]                       \n\t"
          "preceu.ph.qbl    %[p4],            %[qload2]                       \n\t"
          "sb               %[st1],           0(%[dst])                       \n\t" /* even 7 */
          "addu             %[dst],           %[dst],         %[dst_pitch_2]  \n\t"
          "ulw              %[qload2],        9(%[src])                       \n\t"
          "dpa.w.ph         $ac3,             %[p1],          %[filter45]     \n\t" /* odd 1 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* odd 1 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* even 8 */

          /* odd 2. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* odd 3 */
          "mthi             $zero,            $ac2                            \n\t"
          "preceu.ph.qbr    %[p1],            %[qload2]                       \n\t"
          "preceu.ph.qbl    %[p5],            %[qload2]                       \n\t"
          "sb               %[st2],           0(%[dst])                       \n\t" /* even 8 */
          "ulw              %[qload1],        13(%[src])                      \n\t"
          "dpa.w.ph         $ac1,             %[p2],          %[filter45]     \n\t" /* odd 2 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* odd 2 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* odd 1 */

          /* odd 3. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* odd 4 */
          "mthi             $zero,            $ac3                            \n\t"
          "preceu.ph.qbr    %[p2],            %[qload1]                       \n\t"
          "sb               %[st3],           0(%[odd_dst])                   \n\t" /* odd 1 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac2,             %[p3],          %[filter45]     \n\t" /* odd 3 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* odd 3 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* odd 2 */

          /* odd 4. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* odd 5 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbl    %[p3],            %[qload1]                       \n\t"
          "sb               %[st1],           0(%[odd_dst])                   \n\t" /* odd 2 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac3,             %[p4],          %[filter45]     \n\t" /* odd 4 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* odd 4 */
          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* odd 3 */

          /* odd 5. pixel */
          "mtlo             %[vector_64],     $ac2                            \n\t" /* odd 6 */
          "mthi             $zero,            $ac2                            \n\t"
          "sb               %[st2],           0(%[odd_dst])                   \n\t" /* odd 3 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac1,             %[p1],          %[filter45]     \n\t" /* odd 5 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* odd 5 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* odd 4 */

          /* odd 6. pixel */
          "mtlo             %[vector_64],     $ac3                            \n\t" /* odd 7 */
          "mthi             $zero,            $ac3                            \n\t"
          "sb               %[st3],           0(%[odd_dst])                   \n\t" /* odd 4 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "ulw              %[qload1],        21(%[src])                      \n\t"
          "dpa.w.ph         $ac2,             %[p5],          %[filter45]     \n\t" /* odd 6 */
          "extp             %[Temp2],         $ac2,           31              \n\t" /* odd 6 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* odd 5 */

          /* odd 7. pixel */
          "mtlo             %[vector_64],     $ac1                            \n\t" /* odd 8 */
          "mthi             $zero,            $ac1                            \n\t"
          "preceu.ph.qbr    %[p5],            %[qload1]                       \n\t"
          "sb               %[st1],           0(%[odd_dst])                   \n\t" /* odd 5 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"
          "dpa.w.ph         $ac3,             %[p2],          %[filter45]     \n\t" /* odd 7 */
          "extp             %[Temp3],         $ac3,           31              \n\t" /* odd 7 */

          /* odd 8. pixel */
          "dpa.w.ph         $ac1,             %[p3],          %[filter45]     \n\t" /* odd 8 */
          "extp             %[Temp1],         $ac1,           31              \n\t" /* odd 8 */

          "lbux             %[st2],           %[Temp2](%[cm])                 \n\t" /* odd 6 */
          "lbux             %[st3],           %[Temp3](%[cm])                 \n\t" /* odd 7 */
          "lbux             %[st1],           %[Temp1](%[cm])                 \n\t" /* odd 8 */

          "sb               %[st2],           0(%[odd_dst])                   \n\t" /* odd 6 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"

          "sb               %[st3],           0(%[odd_dst])                   \n\t" /* odd 7 */
          "addu             %[odd_dst],       %[odd_dst],     %[dst_pitch_2]  \n\t"

          "sb               %[st1],           0(%[odd_dst])                   \n\t" /* odd 8 */

          : [qload1] "=&r" (qload1), [qload2] "=&r" (qload2), [p5] "=&r" (p5),
            [st1] "=&r" (st1), [st2] "=&r" (st2), [st3] "=&r" (st3),
            [p1] "=&r" (p1), [p2] "=&r" (p2), [p3] "=&r" (p3), [p4] "=&r" (p4),
            [Temp1] "=&r" (Temp1), [Temp2] "=&r" (Temp2), [Temp3] "=&r" (Temp3),
            [dst] "+r" (dst), [odd_dst] "+r" (odd_dst)
          : [filter45] "r" (filter45), [vector_64] "r" (vector_64),
            [cm] "r" (cm),
            [src] "r" (src), [dst_pitch_2] "r" (dst_pitch_2)
      );

      src += 16;
      dst = (dst_ptr + ((c + 1) * 16 * dst_stride));
      odd_dst = (dst + dst_stride);
    }

    /* Next row... */
    src_ptr += src_stride;
    dst_ptr += 1;
  }
}

void convolve_bi_horiz_transposed(const uint8_t *src, ptrdiff_t src_stride,
                                  uint8_t *dst, ptrdiff_t dst_stride,
                                  const int16_t *filter, int w, int h) {
  int x, y;

  for (y = 0; y < h; ++y) {
    for (x = 0; x < w; ++x) {
      int sum = 0;

      sum += src[x] * filter[3];
      sum += src[x + 1] * filter[4];

      dst[x * dst_stride] = clip_pixel(ROUND_POWER_OF_TWO(sum, FILTER_BITS));
    }

    src += src_stride;
    dst += 1;
  }
}

void vpx_convolve2_dspr2(const uint8_t *src, ptrdiff_t src_stride,
                         uint8_t *dst, ptrdiff_t dst_stride,
                         const int16_t *filter,
                         int w, int h) {
  uint32_t pos = 38;

  /* bit positon for extract from acc */
  __asm__ __volatile__ (
    "wrdsp      %[pos],     1           \n\t"
    :
    : [pos] "r" (pos)
  );

  /* prefetch data to cache memory */
  prefetch_load(src);
  prefetch_load(src + 32);

  switch (w) {
    case 4:
      convolve_bi_horiz_4_transposed_dspr2(src, src_stride,
                                           dst, dst_stride,
                                           filter, h);
      break;
    case 8:
      convolve_bi_horiz_8_transposed_dspr2(src, src_stride,
                                           dst, dst_stride,
                                           filter, h);
      break;
    case 16:
    case 32:
      convolve_bi_horiz_16_transposed_dspr2(src, src_stride,
                                            dst, dst_stride,
                                            filter, h,
                                            (w/16));
      break;
    case 64:
      prefetch_load(src + 32);
      convolve_bi_horiz_64_transposed_dspr2(src, src_stride,
                                            dst, dst_stride,
                                            filter, h);
      break;
    default:
      convolve_bi_horiz_transposed(src, src_stride,
                                   dst, dst_stride,
                                   filter, w, h);
      break;
  }
}
#endif