av1/common/x86/convolve_avx2.c - aom - Git at Google

 /*
  * Copyright (c) 2017, Alliance for Open Media. All rights reserved
  *
  * This source code is subject to the terms of the BSD 2 Clause License and
  * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
  * was not distributed with this source code in the LICENSE file, you can
  * obtain it at www.aomedia.org/license/software. If the Alliance for Open
  * Media Patent License 1.0 was not distributed with this source code in the
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */

 #include <immintrin.h>

 #include "./av1_rtcd.h"
 #include "aom_dsp/aom_dsp_common.h"
 #include "aom_dsp/x86/convolve_avx2.h"
 #include "aom_dsp/x86/synonyms.h"

 static const uint32_t sindex[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };

 // 16 epi16 pixels
 static INLINE void pixel_clamp_avx2(__m256i *u, int bd) {
   const __m256i one = _mm256_set1_epi16(1);
   const __m256i max = _mm256_sub_epi16(_mm256_slli_epi16(one, bd), one);
   __m256i clamped, mask;

   mask = _mm256_cmpgt_epi16(*u, max);
   clamped = _mm256_andnot_si256(mask, *u);
   mask = _mm256_and_si256(mask, max);
   clamped = _mm256_or_si256(mask, clamped);

   const __m256i zero = _mm256_setzero_si256();
   mask = _mm256_cmpgt_epi16(clamped, zero);
   *u = _mm256_and_si256(clamped, mask);
 }

 // 8 epi16 pixels
 static INLINE void pixel_clamp_sse2(__m128i *u, int bd) {
   const __m128i one = _mm_set1_epi16(1);
   const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
   __m128i clamped, mask;

   mask = _mm_cmpgt_epi16(*u, max);
   clamped = _mm_andnot_si128(mask, *u);
   mask = _mm_and_si128(mask, max);
   clamped = _mm_or_si128(mask, clamped);

   const __m128i zero = _mm_setzero_si128();
   mask = _mm_cmpgt_epi16(clamped, zero);
   *u = _mm_and_si128(clamped, mask);
 }

 // Work on multiple of 32 pixels
 static INLINE void cal_rounding_32xn_avx2(const int32_t *src, uint8_t *dst,
                                           const __m256i *rnd, int shift,
                                           int num) {
   do {
     __m256i x0 = _mm256_loadu_si256((const __m256i *)src);
     __m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);
     __m256i x2 = _mm256_loadu_si256((const __m256i *)src + 2);
     __m256i x3 = _mm256_loadu_si256((const __m256i *)src + 3);

     x0 = _mm256_add_epi32(x0, *rnd);
     x1 = _mm256_add_epi32(x1, *rnd);
     x2 = _mm256_add_epi32(x2, *rnd);
     x3 = _mm256_add_epi32(x3, *rnd);

     x0 = _mm256_srai_epi32(x0, shift);
     x1 = _mm256_srai_epi32(x1, shift);
     x2 = _mm256_srai_epi32(x2, shift);
     x3 = _mm256_srai_epi32(x3, shift);

     x0 = _mm256_packs_epi32(x0, x1);
     x2 = _mm256_packs_epi32(x2, x3);

     pixel_clamp_avx2(&x0, 8);
     pixel_clamp_avx2(&x2, 8);

     x0 = _mm256_packus_epi16(x0, x2);
     x1 = _mm256_loadu_si256((const __m256i *)sindex);
     x2 = _mm256_permutevar8x32_epi32(x0, x1);

     _mm256_storeu_si256((__m256i *)dst, x2);
     src += 32;
     dst += 32;
     num--;
   } while (num > 0);
 }

 static INLINE void cal_rounding_16_avx2(const int32_t *src, uint8_t *dst,
                                         const __m256i *rnd, int shift) {
   __m256i x0 = _mm256_loadu_si256((const __m256i *)src);
   __m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);

   x0 = _mm256_add_epi32(x0, *rnd);
   x1 = _mm256_add_epi32(x1, *rnd);

   x0 = _mm256_srai_epi32(x0, shift);
   x1 = _mm256_srai_epi32(x1, shift);

   x0 = _mm256_packs_epi32(x0, x1);
   pixel_clamp_avx2(&x0, 8);

   const __m256i x2 = _mm256_packus_epi16(x0, x0);
   x1 = _mm256_loadu_si256((const __m256i *)sindex);
   x0 = _mm256_permutevar8x32_epi32(x2, x1);

   _mm_storeu_si128((__m128i *)dst, _mm256_castsi256_si128(x0));
 }

 static INLINE void cal_rounding_8_avx2(const int32_t *src, uint8_t *dst,
                                        const __m256i *rnd, int shift) {
   __m256i x0 = _mm256_loadu_si256((const __m256i *)src);
   x0 = _mm256_add_epi32(x0, *rnd);
   x0 = _mm256_srai_epi32(x0, shift);

   x0 = _mm256_packs_epi32(x0, x0);
   pixel_clamp_avx2(&x0, 8);

   x0 = _mm256_packus_epi16(x0, x0);
   const __m256i x1 = _mm256_loadu_si256((const __m256i *)sindex);
   x0 = _mm256_permutevar8x32_epi32(x0, x1);

   _mm_storel_epi64((__m128i *)dst, _mm256_castsi256_si128(x0));
 }

 static INLINE void cal_rounding_4_sse2(const int32_t *src, uint8_t *dst,
                                        const __m128i *rnd, int shift) {
   __m128i x = _mm_loadu_si128((const __m128i *)src);
   x = _mm_add_epi32(x, *rnd);
   x = _mm_srai_epi32(x, shift);

   x = _mm_packs_epi32(x, x);
   pixel_clamp_sse2(&x, 8);

   x = _mm_packus_epi16(x, x);
   *(uint32_t *)dst = _mm_cvtsi128_si32(x);
 }

 static INLINE void cal_highbd_rounding_32xn_avx2(const int32_t *src,
                                                  uint16_t *dst,
                                                  const __m256i *rnd, int shift,
                                                  int num, int bd) {
   do {
     __m256i x0 = _mm256_loadu_si256((const __m256i *)src);
     __m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);
     __m256i x2 = _mm256_loadu_si256((const __m256i *)src + 2);
     __m256i x3 = _mm256_loadu_si256((const __m256i *)src + 3);

     x0 = _mm256_add_epi32(x0, *rnd);
     x1 = _mm256_add_epi32(x1, *rnd);
     x2 = _mm256_add_epi32(x2, *rnd);
     x3 = _mm256_add_epi32(x3, *rnd);

     x0 = _mm256_srai_epi32(x0, shift);
     x1 = _mm256_srai_epi32(x1, shift);
     x2 = _mm256_srai_epi32(x2, shift);
     x3 = _mm256_srai_epi32(x3, shift);

     x0 = _mm256_packs_epi32(x0, x1);
     x2 = _mm256_packs_epi32(x2, x3);

     pixel_clamp_avx2(&x0, bd);
     pixel_clamp_avx2(&x2, bd);

     x0 = _mm256_permute4x64_epi64(x0, 0xD8);
     x2 = _mm256_permute4x64_epi64(x2, 0xD8);

     _mm256_storeu_si256((__m256i *)dst, x0);
     _mm256_storeu_si256((__m256i *)(dst + 16), x2);
     src += 32;
     dst += 32;
     num--;
   } while (num > 0);
 }

 static INLINE void cal_highbd_rounding_16_avx2(const int32_t *src,
                                                uint16_t *dst,
                                                const __m256i *rnd, int shift,
                                                int bd) {
   __m256i x0 = _mm256_loadu_si256((const __m256i *)src);
   __m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);

   x0 = _mm256_add_epi32(x0, *rnd);
   x1 = _mm256_add_epi32(x1, *rnd);

   x0 = _mm256_srai_epi32(x0, shift);
   x1 = _mm256_srai_epi32(x1, shift);

   x0 = _mm256_packs_epi32(x0, x1);
   pixel_clamp_avx2(&x0, bd);

   x0 = _mm256_permute4x64_epi64(x0, 0xD8);
   _mm256_storeu_si256((__m256i *)dst, x0);
 }

 static INLINE void cal_highbd_rounding_8_avx2(const int32_t *src, uint16_t *dst,
                                               const __m256i *rnd, int shift,
                                               int bd) {
   __m256i x = _mm256_loadu_si256((const __m256i *)src);
   x = _mm256_add_epi32(x, *rnd);
   x = _mm256_srai_epi32(x, shift);

   x = _mm256_packs_epi32(x, x);
   pixel_clamp_avx2(&x, bd);

   x = _mm256_permute4x64_epi64(x, 0xD8);
   _mm_storeu_si128((__m128i *)dst, _mm256_castsi256_si128(x));
 }

 static INLINE void cal_highbd_rounding_4_sse2(const int32_t *src, uint16_t *dst,
                                               const __m128i *rnd, int shift,
                                               int bd) {
   __m128i x = _mm_loadu_si128((const __m128i *)src);
   x = _mm_add_epi32(x, *rnd);
   x = _mm_srai_epi32(x, shift);

   x = _mm_packs_epi32(x, x);
   pixel_clamp_sse2(&x, bd);
   _mm_storel_epi64((__m128i *)dst, x);
 }

 void av1_convolve_y_sr_avx2(const uint8_t *src, int src_stride, uint8_t *dst,
                             int dst_stride, int w, int h,
                             InterpFilterParams *filter_params_x,
                             InterpFilterParams *filter_params_y,
                             const int subpel_x_q4, const int subpel_y_q4,
                             ConvolveParams *conv_params) {
   int i, j;
   const int fo_vert = filter_params_y->taps / 2 - 1;
   const uint8_t *const src_ptr = src - fo_vert * src_stride;

   // right shift is F-1 because we are already dividing
   // filter co-efficients by 2
   const int right_shift_bits = (FILTER_BITS - 1);
   const __m128i right_shift = _mm_cvtsi32_si128(right_shift_bits);
   const __m256i right_shift_const =
       _mm256_set1_epi16((1 << right_shift_bits) >> 1);
   __m256i coeffs[4], s[8];

   assert(conv_params->round_0 <= FILTER_BITS);
   assert(((conv_params->round_0 + conv_params->round_1) <= (FILTER_BITS + 1)) ||
          ((conv_params->round_0 + conv_params->round_1) == (2 * FILTER_BITS)));

   prepare_coeffs_lowbd(filter_params_y, subpel_y_q4, coeffs);

   (void)filter_params_x;
   (void)subpel_x_q4;
   (void)conv_params;

   for (j = 0; j < w; j += 16) {
     const uint8_t *data = &src_ptr[j];
     __m256i src6;

     // Load lines a and b. Line a to lower 128, line b to upper 128
     const __m256i src_01a = _mm256_permute2x128_si256(
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 0 * src_stride))),
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 1 * src_stride))),
         0x20);

     const __m256i src_12a = _mm256_permute2x128_si256(
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 1 * src_stride))),
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 2 * src_stride))),
         0x20);

     const __m256i src_23a = _mm256_permute2x128_si256(
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 2 * src_stride))),
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 3 * src_stride))),
         0x20);

     const __m256i src_34a = _mm256_permute2x128_si256(
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 3 * src_stride))),
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 4 * src_stride))),
         0x20);

     const __m256i src_45a = _mm256_permute2x128_si256(
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 4 * src_stride))),
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 5 * src_stride))),
         0x20);

     src6 = _mm256_castsi128_si256(
         _mm_loadu_si128((__m128i *)(data + 6 * src_stride)));
     const __m256i src_56a = _mm256_permute2x128_si256(
         _mm256_castsi128_si256(
             _mm_loadu_si128((__m128i *)(data + 5 * src_stride))),
         src6, 0x20);

     s[0] = _mm256_unpacklo_epi8(src_01a, src_12a);
     s[1] = _mm256_unpacklo_epi8(src_23a, src_34a);
     s[2] = _mm256_unpacklo_epi8(src_45a, src_56a);

     s[4] = _mm256_unpackhi_epi8(src_01a, src_12a);
     s[5] = _mm256_unpackhi_epi8(src_23a, src_34a);
     s[6] = _mm256_unpackhi_epi8(src_45a, src_56a);

     for (i = 0; i < h; i += 2) {
       data = &src_ptr[i * src_stride + j];
       const __m256i src_67a = _mm256_permute2x128_si256(
           src6,
           _mm256_castsi128_si256(
               _mm_loadu_si128((__m128i *)(data + 7 * src_stride))),
           0x20);

       src6 = _mm256_castsi128_si256(
           _mm_loadu_si128((__m128i *)(data + 8 * src_stride)));
       const __m256i src_78a = _mm256_permute2x128_si256(
           _mm256_castsi128_si256(
               _mm_loadu_si128((__m128i *)(data + 7 * src_stride))),
           src6, 0x20);

       s[3] = _mm256_unpacklo_epi8(src_67a, src_78a);
       s[7] = _mm256_unpackhi_epi8(src_67a, src_78a);

       const __m256i res_lo = convolve_lowbd(s, coeffs);

       /* rounding code */
       // shift by F - 1
       const __m256i res_16b_lo = _mm256_sra_epi16(
           _mm256_add_epi16(res_lo, right_shift_const), right_shift);
       // 8 bit conversion and saturation to uint8
       __m256i res_8b_lo = _mm256_packus_epi16(res_16b_lo, res_16b_lo);

       if (w - j > 8) {
         const __m256i res_hi = convolve_lowbd(s + 4, coeffs);

         /* rounding code */
         // shift by F - 1
         const __m256i res_16b_hi = _mm256_sra_epi16(
             _mm256_add_epi16(res_hi, right_shift_const), right_shift);
         // 8 bit conversion and saturation to uint8
         __m256i res_8b_hi = _mm256_packus_epi16(res_16b_hi, res_16b_hi);

         __m256i res_a = _mm256_unpacklo_epi64(res_8b_lo, res_8b_hi);

         const __m128i res_0 = _mm256_castsi256_si128(res_a);
         const __m128i res_1 = _mm256_extracti128_si256(res_a, 1);

         _mm_storeu_si128((__m128i *)&dst[i * dst_stride + j], res_0);
         _mm_storeu_si128((__m128i *)&dst[i * dst_stride + j + dst_stride],
                          res_1);
       } else {
         const __m128i res_0 = _mm256_castsi256_si128(res_8b_lo);
         const __m128i res_1 = _mm256_extracti128_si256(res_8b_lo, 1);
         if (w - j > 4) {
           _mm_storel_epi64((__m128i *)&dst[i * dst_stride + j], res_0);
           _mm_storel_epi64((__m128i *)&dst[i * dst_stride + j + dst_stride],
                            res_1);
         } else if (w - j > 2) {
           xx_storel_32(&dst[i * dst_stride + j], res_0);
           xx_storel_32(&dst[i * dst_stride + j + dst_stride], res_1);
         } else {
           __m128i *const p_0 = (__m128i *)&dst[i * dst_stride + j];
           __m128i *const p_1 = (__m128i *)&dst[i * dst_stride + j + dst_stride];
           *(uint16_t *)p_0 = _mm_cvtsi128_si32(res_0);
           *(uint16_t *)p_1 = _mm_cvtsi128_si32(res_1);
         }
       }

       s[0] = s[1];
       s[1] = s[2];
       s[2] = s[3];

       s[4] = s[5];
       s[5] = s[6];
       s[6] = s[7];
     }
   }
 }

 void av1_convolve_x_sr_avx2(const uint8_t *src, int src_stride, uint8_t *dst,
                             int dst_stride, int w, int h,
                             InterpFilterParams *filter_params_x,
                             InterpFilterParams *filter_params_y,
                             const int subpel_x_q4, const int subpel_y_q4,
                             ConvolveParams *conv_params) {
   int i, j;
   const int fo_horiz = filter_params_x->taps / 2 - 1;
   const uint8_t *const src_ptr = src - fo_horiz;
   const int bits = FILTER_BITS - conv_params->round_0;

   __m256i filt[4], coeffs[4];

   filt[0] = _mm256_load_si256((__m256i const *)filt1_global_avx2);
   filt[1] = _mm256_load_si256((__m256i const *)filt2_global_avx2);
   filt[2] = _mm256_load_si256((__m256i const *)filt3_global_avx2);
   filt[3] = _mm256_load_si256((__m256i const *)filt4_global_avx2);

   prepare_coeffs_lowbd(filter_params_x, subpel_x_q4, coeffs);

   const __m256i round_0_const =
       _mm256_set1_epi16((1 << (conv_params->round_0 - 1)) >> 1);
   const __m128i round_0_shift = _mm_cvtsi32_si128(conv_params->round_0 - 1);
   const __m256i round_const = _mm256_set1_epi16((1 << bits) >> 1);
   const __m128i round_shift = _mm_cvtsi32_si128(bits);

   (void)filter_params_y;
   (void)subpel_y_q4;

   assert(bits >= 0);
   assert((FILTER_BITS - conv_params->round_1) >= 0 ||
          ((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS));
   assert(conv_params->round_0 > 0);

   if (w <= 8) {
     for (i = 0; i < h; i += 2) {
       const __m256i data = _mm256_permute2x128_si256(
           _mm256_castsi128_si256(
               _mm_loadu_si128((__m128i *)(&src_ptr[i * src_stride]))),
           _mm256_castsi128_si256(_mm_loadu_si128(
               (__m128i *)(&src_ptr[i * src_stride + src_stride]))),
           0x20);

       __m256i res_16b = convolve_lowbd_x(data, coeffs, filt);

       res_16b = _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_0_const),
                                  round_0_shift);

       res_16b =
           _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_const), round_shift);

       /* rounding code */
       // 8 bit conversion and saturation to uint8
       __m256i res_8b = _mm256_packus_epi16(res_16b, res_16b);

       const __m128i res_0 = _mm256_castsi256_si128(res_8b);
       const __m128i res_1 = _mm256_extracti128_si256(res_8b, 1);
       if (w > 4) {
         _mm_storel_epi64((__m128i *)&dst[i * dst_stride], res_0);
         _mm_storel_epi64((__m128i *)&dst[i * dst_stride + dst_stride], res_1);
       } else if (w > 2) {
         xx_storel_32(&dst[i * dst_stride], res_0);
         xx_storel_32(&dst[i * dst_stride + dst_stride], res_1);
       } else {
         __m128i *const p_0 = (__m128i *)&dst[i * dst_stride];
         __m128i *const p_1 = (__m128i *)&dst[i * dst_stride + dst_stride];
         *(uint16_t *)p_0 = _mm_cvtsi128_si32(res_0);
         *(uint16_t *)p_1 = _mm_cvtsi128_si32(res_1);
       }
     }
   } else {
     for (i = 0; i < h; ++i) {
       for (j = 0; j < w; j += 16) {
         // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 16 17 18
         // 19 20 21 22 23
         const __m256i data = _mm256_inserti128_si256(
             _mm256_loadu_si256((__m256i *)&src_ptr[(i * src_stride) + j]),
             _mm_loadu_si128((__m128i *)&src_ptr[(i * src_stride) + (j + 8)]),
             1);

         __m256i res_16b = convolve_lowbd_x(data, coeffs, filt);

         res_16b = _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_0_const),
                                    round_0_shift);

         res_16b = _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_const),
                                    round_shift);

         /* rounding code */
         // 8 bit conversion and saturation to uint8
         __m256i res_8b = _mm256_packus_epi16(res_16b, res_16b);

         // Store values into the destination buffer
         // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
         res_8b = _mm256_permute4x64_epi64(res_8b, 216);
         __m128i res = _mm256_castsi256_si128(res_8b);
         _mm_storeu_si128((__m128i *)&dst[i * dst_stride + j], res);
       }
     }
   }
 }
	/*
	* Copyright (c) 2017, Alliance for Open Media. All rights reserved
	*
	* This source code is subject to the terms of the BSD 2 Clause License and
	* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
	* was not distributed with this source code in the LICENSE file, you can
	* obtain it at www.aomedia.org/license/software. If the Alliance for Open
	* Media Patent License 1.0 was not distributed with this source code in the
	* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
	*/

	#include <immintrin.h>

	#include "./av1_rtcd.h"
	#include "aom_dsp/aom_dsp_common.h"
	#include "aom_dsp/x86/convolve_avx2.h"
	#include "aom_dsp/x86/synonyms.h"

	static const uint32_t sindex[8] = { 0, 4, 1, 5, 2, 6, 3, 7 };

	// 16 epi16 pixels
	static INLINE void pixel_clamp_avx2(__m256i *u, int bd) {
	const __m256i one = _mm256_set1_epi16(1);
	const __m256i max = _mm256_sub_epi16(_mm256_slli_epi16(one, bd), one);
	__m256i clamped, mask;

	mask = _mm256_cmpgt_epi16(*u, max);
	clamped = _mm256_andnot_si256(mask, *u);
	mask = _mm256_and_si256(mask, max);
	clamped = _mm256_or_si256(mask, clamped);

	const __m256i zero = _mm256_setzero_si256();
	mask = _mm256_cmpgt_epi16(clamped, zero);
	*u = _mm256_and_si256(clamped, mask);
	}

	// 8 epi16 pixels
	static INLINE void pixel_clamp_sse2(__m128i *u, int bd) {
	const __m128i one = _mm_set1_epi16(1);
	const __m128i max = _mm_sub_epi16(_mm_slli_epi16(one, bd), one);
	__m128i clamped, mask;

	mask = _mm_cmpgt_epi16(*u, max);
	clamped = _mm_andnot_si128(mask, *u);
	mask = _mm_and_si128(mask, max);
	clamped = _mm_or_si128(mask, clamped);

	const __m128i zero = _mm_setzero_si128();
	mask = _mm_cmpgt_epi16(clamped, zero);
	*u = _mm_and_si128(clamped, mask);
	}

	// Work on multiple of 32 pixels
	static INLINE void cal_rounding_32xn_avx2(const int32_t src, uint8_t dst,
	const __m256i *rnd, int shift,
	int num) {
	do {
	__m256i x0 = _mm256_loadu_si256((const __m256i *)src);
	__m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);
	__m256i x2 = _mm256_loadu_si256((const __m256i *)src + 2);
	__m256i x3 = _mm256_loadu_si256((const __m256i *)src + 3);

	x0 = _mm256_add_epi32(x0, *rnd);
	x1 = _mm256_add_epi32(x1, *rnd);
	x2 = _mm256_add_epi32(x2, *rnd);
	x3 = _mm256_add_epi32(x3, *rnd);

	x0 = _mm256_srai_epi32(x0, shift);
	x1 = _mm256_srai_epi32(x1, shift);
	x2 = _mm256_srai_epi32(x2, shift);
	x3 = _mm256_srai_epi32(x3, shift);

	x0 = _mm256_packs_epi32(x0, x1);
	x2 = _mm256_packs_epi32(x2, x3);

	pixel_clamp_avx2(&x0, 8);
	pixel_clamp_avx2(&x2, 8);

	x0 = _mm256_packus_epi16(x0, x2);
	x1 = _mm256_loadu_si256((const __m256i *)sindex);
	x2 = _mm256_permutevar8x32_epi32(x0, x1);

	_mm256_storeu_si256((__m256i *)dst, x2);
	src += 32;
	dst += 32;
	num--;
	} while (num > 0);
	}

	static INLINE void cal_rounding_16_avx2(const int32_t src, uint8_t dst,
	const __m256i *rnd, int shift) {
	__m256i x0 = _mm256_loadu_si256((const __m256i *)src);
	__m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);

	x0 = _mm256_add_epi32(x0, *rnd);
	x1 = _mm256_add_epi32(x1, *rnd);

	x0 = _mm256_srai_epi32(x0, shift);
	x1 = _mm256_srai_epi32(x1, shift);

	x0 = _mm256_packs_epi32(x0, x1);
	pixel_clamp_avx2(&x0, 8);

	const __m256i x2 = _mm256_packus_epi16(x0, x0);
	x1 = _mm256_loadu_si256((const __m256i *)sindex);
	x0 = _mm256_permutevar8x32_epi32(x2, x1);

	_mm_storeu_si128((__m128i *)dst, _mm256_castsi256_si128(x0));
	}

	static INLINE void cal_rounding_8_avx2(const int32_t src, uint8_t dst,
	const __m256i *rnd, int shift) {
	__m256i x0 = _mm256_loadu_si256((const __m256i *)src);
	x0 = _mm256_add_epi32(x0, *rnd);
	x0 = _mm256_srai_epi32(x0, shift);

	x0 = _mm256_packs_epi32(x0, x0);
	pixel_clamp_avx2(&x0, 8);

	x0 = _mm256_packus_epi16(x0, x0);
	const __m256i x1 = _mm256_loadu_si256((const __m256i *)sindex);
	x0 = _mm256_permutevar8x32_epi32(x0, x1);

	_mm_storel_epi64((__m128i *)dst, _mm256_castsi256_si128(x0));
	}

	static INLINE void cal_rounding_4_sse2(const int32_t src, uint8_t dst,
	const __m128i *rnd, int shift) {
	__m128i x = _mm_loadu_si128((const __m128i *)src);
	x = _mm_add_epi32(x, *rnd);
	x = _mm_srai_epi32(x, shift);

	x = _mm_packs_epi32(x, x);
	pixel_clamp_sse2(&x, 8);

	x = _mm_packus_epi16(x, x);
	(uint32_t )dst = _mm_cvtsi128_si32(x);
	}

	static INLINE void cal_highbd_rounding_32xn_avx2(const int32_t *src,
	uint16_t *dst,
	const __m256i *rnd, int shift,
	int num, int bd) {
	do {
	__m256i x0 = _mm256_loadu_si256((const __m256i *)src);
	__m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);
	__m256i x2 = _mm256_loadu_si256((const __m256i *)src + 2);
	__m256i x3 = _mm256_loadu_si256((const __m256i *)src + 3);

	x0 = _mm256_add_epi32(x0, *rnd);
	x1 = _mm256_add_epi32(x1, *rnd);
	x2 = _mm256_add_epi32(x2, *rnd);
	x3 = _mm256_add_epi32(x3, *rnd);

	x0 = _mm256_srai_epi32(x0, shift);
	x1 = _mm256_srai_epi32(x1, shift);
	x2 = _mm256_srai_epi32(x2, shift);
	x3 = _mm256_srai_epi32(x3, shift);

	x0 = _mm256_packs_epi32(x0, x1);
	x2 = _mm256_packs_epi32(x2, x3);

	pixel_clamp_avx2(&x0, bd);
	pixel_clamp_avx2(&x2, bd);

	x0 = _mm256_permute4x64_epi64(x0, 0xD8);
	x2 = _mm256_permute4x64_epi64(x2, 0xD8);

	_mm256_storeu_si256((__m256i *)dst, x0);
	_mm256_storeu_si256((__m256i *)(dst + 16), x2);
	src += 32;
	dst += 32;
	num--;
	} while (num > 0);
	}

	static INLINE void cal_highbd_rounding_16_avx2(const int32_t *src,
	uint16_t *dst,
	const __m256i *rnd, int shift,
	int bd) {
	__m256i x0 = _mm256_loadu_si256((const __m256i *)src);
	__m256i x1 = _mm256_loadu_si256((const __m256i *)src + 1);

	x0 = _mm256_add_epi32(x0, *rnd);
	x1 = _mm256_add_epi32(x1, *rnd);

	x0 = _mm256_srai_epi32(x0, shift);
	x1 = _mm256_srai_epi32(x1, shift);

	x0 = _mm256_packs_epi32(x0, x1);
	pixel_clamp_avx2(&x0, bd);

	x0 = _mm256_permute4x64_epi64(x0, 0xD8);
	_mm256_storeu_si256((__m256i *)dst, x0);
	}

	static INLINE void cal_highbd_rounding_8_avx2(const int32_t src, uint16_t dst,
	const __m256i *rnd, int shift,
	int bd) {
	__m256i x = _mm256_loadu_si256((const __m256i *)src);
	x = _mm256_add_epi32(x, *rnd);
	x = _mm256_srai_epi32(x, shift);

	x = _mm256_packs_epi32(x, x);
	pixel_clamp_avx2(&x, bd);

	x = _mm256_permute4x64_epi64(x, 0xD8);
	_mm_storeu_si128((__m128i *)dst, _mm256_castsi256_si128(x));
	}

	static INLINE void cal_highbd_rounding_4_sse2(const int32_t src, uint16_t dst,
	const __m128i *rnd, int shift,
	int bd) {
	__m128i x = _mm_loadu_si128((const __m128i *)src);
	x = _mm_add_epi32(x, *rnd);
	x = _mm_srai_epi32(x, shift);

	x = _mm_packs_epi32(x, x);
	pixel_clamp_sse2(&x, bd);
	_mm_storel_epi64((__m128i *)dst, x);
	}

	void av1_convolve_y_sr_avx2(const uint8_t src, int src_stride, uint8_t dst,
	int dst_stride, int w, int h,
	InterpFilterParams *filter_params_x,
	InterpFilterParams *filter_params_y,
	const int subpel_x_q4, const int subpel_y_q4,
	ConvolveParams *conv_params) {
	int i, j;
	const int fo_vert = filter_params_y->taps / 2 - 1;
	const uint8_t const src_ptr = src - fo_vert src_stride;

	// right shift is F-1 because we are already dividing
	// filter co-efficients by 2
	const int right_shift_bits = (FILTER_BITS - 1);
	const __m128i right_shift = _mm_cvtsi32_si128(right_shift_bits);
	const __m256i right_shift_const =
	_mm256_set1_epi16((1 << right_shift_bits) >> 1);
	__m256i coeffs[4], s[8];

	assert(conv_params->round_0 <= FILTER_BITS);
	assert(((conv_params->round_0 + conv_params->round_1) <= (FILTER_BITS + 1)) \|\|
	((conv_params->round_0 + conv_params->round_1) == (2 * FILTER_BITS)));

	prepare_coeffs_lowbd(filter_params_y, subpel_y_q4, coeffs);

	(void)filter_params_x;
	(void)subpel_x_q4;
	(void)conv_params;

	for (j = 0; j < w; j += 16) {
	const uint8_t *data = &src_ptr[j];
	__m256i src6;

	// Load lines a and b. Line a to lower 128, line b to upper 128
	const __m256i src_01a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 0 src_stride))),
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 1 src_stride))),
	0x20);

	const __m256i src_12a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 1 src_stride))),
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 2 src_stride))),
	0x20);

	const __m256i src_23a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 2 src_stride))),
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 3 src_stride))),
	0x20);

	const __m256i src_34a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 3 src_stride))),
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 4 src_stride))),
	0x20);

	const __m256i src_45a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 4 src_stride))),
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 5 src_stride))),
	0x20);

	src6 = _mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 6 src_stride)));
	const __m256i src_56a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 5 src_stride))),
	src6, 0x20);

	s[0] = _mm256_unpacklo_epi8(src_01a, src_12a);
	s[1] = _mm256_unpacklo_epi8(src_23a, src_34a);
	s[2] = _mm256_unpacklo_epi8(src_45a, src_56a);

	s[4] = _mm256_unpackhi_epi8(src_01a, src_12a);
	s[5] = _mm256_unpackhi_epi8(src_23a, src_34a);
	s[6] = _mm256_unpackhi_epi8(src_45a, src_56a);

	for (i = 0; i < h; i += 2) {
	data = &src_ptr[i * src_stride + j];
	const __m256i src_67a = _mm256_permute2x128_si256(
	src6,
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 7 src_stride))),
	0x20);

	src6 = _mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 8 src_stride)));
	const __m256i src_78a = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(data + 7 src_stride))),
	src6, 0x20);

	s[3] = _mm256_unpacklo_epi8(src_67a, src_78a);
	s[7] = _mm256_unpackhi_epi8(src_67a, src_78a);

	const __m256i res_lo = convolve_lowbd(s, coeffs);

	/* rounding code */
	// shift by F - 1
	const __m256i res_16b_lo = _mm256_sra_epi16(
	_mm256_add_epi16(res_lo, right_shift_const), right_shift);
	// 8 bit conversion and saturation to uint8
	__m256i res_8b_lo = _mm256_packus_epi16(res_16b_lo, res_16b_lo);

	if (w - j > 8) {
	const __m256i res_hi = convolve_lowbd(s + 4, coeffs);

	/* rounding code */
	// shift by F - 1
	const __m256i res_16b_hi = _mm256_sra_epi16(
	_mm256_add_epi16(res_hi, right_shift_const), right_shift);
	// 8 bit conversion and saturation to uint8
	__m256i res_8b_hi = _mm256_packus_epi16(res_16b_hi, res_16b_hi);

	__m256i res_a = _mm256_unpacklo_epi64(res_8b_lo, res_8b_hi);

	const __m128i res_0 = _mm256_castsi256_si128(res_a);
	const __m128i res_1 = _mm256_extracti128_si256(res_a, 1);

	_mm_storeu_si128((__m128i )&dst[i dst_stride + j], res_0);
	_mm_storeu_si128((__m128i )&dst[i dst_stride + j + dst_stride],
	res_1);
	} else {
	const __m128i res_0 = _mm256_castsi256_si128(res_8b_lo);
	const __m128i res_1 = _mm256_extracti128_si256(res_8b_lo, 1);
	if (w - j > 4) {
	_mm_storel_epi64((__m128i )&dst[i dst_stride + j], res_0);
	_mm_storel_epi64((__m128i )&dst[i dst_stride + j + dst_stride],
	res_1);
	} else if (w - j > 2) {
	xx_storel_32(&dst[i * dst_stride + j], res_0);
	xx_storel_32(&dst[i * dst_stride + j + dst_stride], res_1);
	} else {
	__m128i const p_0 = (__m128i )&dst[i * dst_stride + j];
	__m128i const p_1 = (__m128i )&dst[i * dst_stride + j + dst_stride];
	(uint16_t )p_0 = _mm_cvtsi128_si32(res_0);
	(uint16_t )p_1 = _mm_cvtsi128_si32(res_1);
	}
	}

	s[0] = s[1];
	s[1] = s[2];
	s[2] = s[3];

	s[4] = s[5];
	s[5] = s[6];
	s[6] = s[7];
	}
	}
	}

	void av1_convolve_x_sr_avx2(const uint8_t src, int src_stride, uint8_t dst,
	int dst_stride, int w, int h,
	InterpFilterParams *filter_params_x,
	InterpFilterParams *filter_params_y,
	const int subpel_x_q4, const int subpel_y_q4,
	ConvolveParams *conv_params) {
	int i, j;
	const int fo_horiz = filter_params_x->taps / 2 - 1;
	const uint8_t *const src_ptr = src - fo_horiz;
	const int bits = FILTER_BITS - conv_params->round_0;

	__m256i filt[4], coeffs[4];

	filt[0] = _mm256_load_si256((__m256i const *)filt1_global_avx2);
	filt[1] = _mm256_load_si256((__m256i const *)filt2_global_avx2);
	filt[2] = _mm256_load_si256((__m256i const *)filt3_global_avx2);
	filt[3] = _mm256_load_si256((__m256i const *)filt4_global_avx2);

	prepare_coeffs_lowbd(filter_params_x, subpel_x_q4, coeffs);

	const __m256i round_0_const =
	_mm256_set1_epi16((1 << (conv_params->round_0 - 1)) >> 1);
	const __m128i round_0_shift = _mm_cvtsi32_si128(conv_params->round_0 - 1);
	const __m256i round_const = _mm256_set1_epi16((1 << bits) >> 1);
	const __m128i round_shift = _mm_cvtsi32_si128(bits);

	(void)filter_params_y;
	(void)subpel_y_q4;

	assert(bits >= 0);
	assert((FILTER_BITS - conv_params->round_1) >= 0 \|\|
	((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS));
	assert(conv_params->round_0 > 0);

	if (w <= 8) {
	for (i = 0; i < h; i += 2) {
	const __m256i data = _mm256_permute2x128_si256(
	_mm256_castsi128_si256(
	_mm_loadu_si128((__m128i )(&src_ptr[i src_stride]))),
	_mm256_castsi128_si256(_mm_loadu_si128(
	(__m128i )(&src_ptr[i src_stride + src_stride]))),
	0x20);

	__m256i res_16b = convolve_lowbd_x(data, coeffs, filt);

	res_16b = _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_0_const),
	round_0_shift);

	res_16b =
	_mm256_sra_epi16(_mm256_add_epi16(res_16b, round_const), round_shift);

	/* rounding code */
	// 8 bit conversion and saturation to uint8
	__m256i res_8b = _mm256_packus_epi16(res_16b, res_16b);

	const __m128i res_0 = _mm256_castsi256_si128(res_8b);
	const __m128i res_1 = _mm256_extracti128_si256(res_8b, 1);
	if (w > 4) {
	_mm_storel_epi64((__m128i )&dst[i dst_stride], res_0);
	_mm_storel_epi64((__m128i )&dst[i dst_stride + dst_stride], res_1);
	} else if (w > 2) {
	xx_storel_32(&dst[i * dst_stride], res_0);
	xx_storel_32(&dst[i * dst_stride + dst_stride], res_1);
	} else {
	__m128i const p_0 = (__m128i )&dst[i * dst_stride];
	__m128i const p_1 = (__m128i )&dst[i * dst_stride + dst_stride];
	(uint16_t )p_0 = _mm_cvtsi128_si32(res_0);
	(uint16_t )p_1 = _mm_cvtsi128_si32(res_1);
	}
	}
	} else {
	for (i = 0; i < h; ++i) {
	for (j = 0; j < w; j += 16) {
	// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 8 9 10 11 12 13 14 15 16 17 18
	// 19 20 21 22 23
	const __m256i data = _mm256_inserti128_si256(
	_mm256_loadu_si256((__m256i )&src_ptr[(i src_stride) + j]),
	_mm_loadu_si128((__m128i )&src_ptr[(i src_stride) + (j + 8)]),
	1);

	__m256i res_16b = convolve_lowbd_x(data, coeffs, filt);

	res_16b = _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_0_const),
	round_0_shift);

	res_16b = _mm256_sra_epi16(_mm256_add_epi16(res_16b, round_const),
	round_shift);

	/* rounding code */
	// 8 bit conversion and saturation to uint8
	__m256i res_8b = _mm256_packus_epi16(res_16b, res_16b);

	// Store values into the destination buffer
	// 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
	res_8b = _mm256_permute4x64_epi64(res_8b, 216);
	__m128i res = _mm256_castsi256_si128(res_8b);
	_mm_storeu_si128((__m128i )&dst[i dst_stride + j], res);
	}
	}
	}
	}