/*

 * 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 "config/av1_rtcd.h"

#include "aom_dsp/aom_dsp_common.h"

#include "aom_dsp/x86/convolve_avx2.h"

#include "aom_dsp/x86/convolve_common_intrin.h"

#include "aom_dsp/x86/synonyms.h"

void av1_convolve_y_sr_avx2(const uint8_t *src, int32_t src_stride,

                            uint8_t *dst, int32_t dst_stride, int32_t w,

                            int32_t h,

                            const InterpFilterParams *filter_params_y,

                            const int32_t subpel_y_qn) {

  __m128i coeffs_128[4];

  __m256i coeffs[6];

  int x = 0, y = h;

  int i, vert_tap = get_filter_tap(filter_params_y, subpel_y_qn);

  assert(vert_tap == 2 || vert_tap == 4 || vert_tap == 6 || vert_tap == 8 ||

         vert_tap == 12);

  assert(!(w % 2));

  assert(!(h % 2));

  const int fo_vert = vert_tap / 2 - 1;

  const uint8_t *const src_ptr = src - fo_vert * src_stride;

  const uint8_t *data = src_ptr;

  uint8_t *dst_ptr = dst;

  if (vert_tap == 2) {

    if (subpel_y_qn != 8) {

      if (w <= 4) {

        prepare_coeffs_2t_ssse3(filter_params_y, subpel_y_qn, coeffs_128);

        __m128i d[2], res;

        if (w == 2) {

          d[0] = _mm_cvtsi32_si128(loadu_int16(data));

          do {

            convolve_y_2tap_2x2_ssse3(data, src_stride, coeffs_128, d, &res);

            res = round_sr_y_ssse3(res);

            pack_store_u8_2x2_sse2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

          } while (y > 0);

        } else {

          assert(w == 4);

          d[0] = _mm_cvtsi32_si128(loadu_int32(data));

          do {

            convolve_y_2tap_4x2_ssse3(data, src_stride, coeffs_128, d, &res);

            res = round_sr_y_ssse3(res);

            pack_store_u8_4x2_sse2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

          } while (y > 0);

        }

      } else {

        prepare_coeffs_2t_lowbd(filter_params_y, subpel_y_qn, coeffs);

        if (w == 8) {

          __m128i d[2];

          d[0] = _mm_loadl_epi64((__m128i *)data);

          do {

            __m256i res;

            convolve_y_2tap_8x2_avx2(data, src_stride, coeffs, d, &res);

            round_pack_store_y_8x2_avx2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

          } while (y > 0);

        } else if (w == 16) {

          __m128i d[2];

          d[0] = _mm_loadu_si128((__m128i *)data);

          do {

            __m256i res[2];

            convolve_y_2tap_16x2_avx2(data, src_stride, coeffs, d, res);

            round_pack_store_y_16x2_avx2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

          } while (y > 0);

        } else {

          assert(!(w % 32));

          __m256i d[2];

          do {

            data = src_ptr + x;

            dst_ptr = dst + x;

            y = h;

            d[0] = _mm256_loadu_si256((__m256i *)data);

            do {

              __m256i res[4];

              convolve_y_2tap_32x2_avx2(data, src_stride, coeffs, d, res);

              round_pack_store_y_32x2_avx2(res, dst_ptr, dst_stride);

              dst_ptr += 2 * dst_stride;

              data += 2 * src_stride;

              y -= 2;

            } while (y > 0);

            x += 32;

          } while (x < w);

        }

      }

    } else {

      if (w <= 16) {

        __m128i s[2], res;

        if (w == 2) {

          s[0] = _mm_cvtsi32_si128(loadu_int16(data));

          do {

            s[1] = _mm_cvtsi32_si128(loadu_int16(data + src_stride));

            res = _mm_avg_epu8(s[0], s[1]);

            xx_storel_16(dst_ptr, res);

            s[0] = _mm_cvtsi32_si128(loadu_int16(data + 2 * src_stride));

            res = _mm_avg_epu8(s[1], s[0]);

            xx_storel_16(dst_ptr + dst_stride, res);

            data += 2 * src_stride;

            dst_ptr += 2 * dst_stride;

            y -= 2;

          } while (y > 0);

        } else if (w == 4) {

          s[0] = _mm_cvtsi32_si128(loadu_int32(data));

          do {

            s[1] = _mm_cvtsi32_si128(loadu_int32(data + src_stride));

            res = _mm_avg_epu8(s[0], s[1]);

            xx_storel_32(dst_ptr, res);

            s[0] = _mm_cvtsi32_si128(loadu_int32(data + 2 * src_stride));

            res = _mm_avg_epu8(s[1], s[0]);

            xx_storel_32(dst_ptr + dst_stride, res);

            data += 2 * src_stride;

            dst_ptr += 2 * dst_stride;

            y -= 2;

          } while (y > 0);

        } else if (w == 8) {

          s[0] = _mm_loadl_epi64((__m128i *)data);

          do {

            s[1] = _mm_loadl_epi64((__m128i *)(data + src_stride));

            res = _mm_avg_epu8(s[0], s[1]);

            _mm_storel_epi64((__m128i *)dst_ptr, res);

            s[0] = _mm_loadl_epi64((__m128i *)(data + 2 * src_stride));

            res = _mm_avg_epu8(s[1], s[0]);

            _mm_storel_epi64((__m128i *)(dst_ptr + dst_stride), res);

            data += 2 * src_stride;

            dst_ptr += 2 * dst_stride;

            y -= 2;

          } while (y > 0);

        } else {

          assert(w == 16);

          s[0] = _mm_loadu_si128((__m128i *)data);

          do {

            s[1] = _mm_loadu_si128((__m128i *)(data + src_stride));

            res = _mm_avg_epu8(s[0], s[1]);

            _mm_storeu_si128((__m128i *)dst_ptr, res);

            s[0] = _mm_loadu_si128((__m128i *)(data + 2 * src_stride));

            res = _mm_avg_epu8(s[1], s[0]);

            _mm_storeu_si128((__m128i *)(dst_ptr + dst_stride), res);

            data += 2 * src_stride;

            dst_ptr += 2 * dst_stride;

            y -= 2;

          } while (y > 0);

        }

      } else {

        assert(!(w % 32));

        __m256i s[2], res;

        do {

          data = src_ptr + x;

          dst_ptr = dst + x;

          y = h;

          s[0] = _mm256_loadu_si256((__m256i *)data);

          do {

            s[1] = _mm256_loadu_si256((__m256i *)(data + src_stride));

            res = _mm256_avg_epu8(s[0], s[1]);

            _mm256_storeu_si256((__m256i *)dst_ptr, res);

            s[0] = _mm256_loadu_si256((__m256i *)(data + 2 * src_stride));

            res = _mm256_avg_epu8(s[1], s[0]);

            _mm256_storeu_si256((__m256i *)(dst_ptr + dst_stride), res);

            data += 2 * src_stride;

            dst_ptr += 2 * dst_stride;

            y -= 2;

          } while (y > 0);

          x += 32;

        } while (x < w);

      }

    }

  } else if (vert_tap == 4) {

    if (w <= 4) {

      prepare_coeffs_4t_ssse3(filter_params_y, subpel_y_qn, coeffs_128);

      __m128i d[4], s[2];

      if (w == 2) {

        d[0] = _mm_cvtsi32_si128(loadu_int16(data + 0 * src_stride));

        d[1] = _mm_cvtsi32_si128(loadu_int16(data + 1 * src_stride));

        d[2] = _mm_cvtsi32_si128(loadu_int16(data + 2 * src_stride));

        const __m128i src_01a = _mm_unpacklo_epi16(d[0], d[1]);

        const __m128i src_12a = _mm_unpacklo_epi16(d[1], d[2]);

        s[0] = _mm_unpacklo_epi8(src_01a, src_12a);

        do {

          __m128i res;

          convolve_y_4tap_2x2_ssse3(data, src_stride, coeffs_128, d, s, &res);

          res = round_sr_y_ssse3(res);

          pack_store_u8_2x2_sse2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

        } while (y > 0);

      } else {

        assert(w == 4);

        d[0] = _mm_cvtsi32_si128(loadu_int32(data + 0 * src_stride));

        d[1] = _mm_cvtsi32_si128(loadu_int32(data + 1 * src_stride));

        d[2] = _mm_cvtsi32_si128(loadu_int32(data + 2 * src_stride));

        const __m128i src_01a = _mm_unpacklo_epi32(d[0], d[1]);

        const __m128i src_12a = _mm_unpacklo_epi32(d[1], d[2]);

        s[0] = _mm_unpacklo_epi8(src_01a, src_12a);

        do {

          __m128i res;

          convolve_y_4tap_4x2_ssse3(data, src_stride, coeffs_128, d, s, &res);

          res = round_sr_y_ssse3(res);

          pack_store_u8_4x2_sse2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

        } while (y > 0);

      }

    } else {

      prepare_coeffs_4t_lowbd(filter_params_y, subpel_y_qn, coeffs);

      if (w == 8) {

        __m128i d[4];

        __m256i s[2];

        d[0] = _mm_loadl_epi64((__m128i *)(data + 0 * src_stride));

        d[1] = _mm_loadl_epi64((__m128i *)(data + 1 * src_stride));

        d[2] = _mm_loadl_epi64((__m128i *)(data + 2 * src_stride));

        const __m256i src_01a = _mm256_setr_m128i(d[0], d[1]);

        const __m256i src_12a = _mm256_setr_m128i(d[1], d[2]);

        s[0] = _mm256_unpacklo_epi8(src_01a, src_12a);

        do {

          __m256i res;

          convolve_y_4tap_8x2_avx2(data, src_stride, coeffs, d, s, &res);

          round_pack_store_y_8x2_avx2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

        } while (y > 0);

      } else if (w == 16) {

        __m128i d[4];

        __m256i s[4];

        d[0] = _mm_loadu_si128((__m128i *)(data + 0 * src_stride));

        d[1] = _mm_loadu_si128((__m128i *)(data + 1 * src_stride));

        d[2] = _mm_loadu_si128((__m128i *)(data + 2 * src_stride));

        const __m256i src_01a = _mm256_setr_m128i(d[0], d[1]);

        const __m256i src_12a = _mm256_setr_m128i(d[1], d[2]);

        s[0] = _mm256_unpacklo_epi8(src_01a, src_12a);

        s[2] = _mm256_unpackhi_epi8(src_01a, src_12a);

        do {

          __m256i res[2];

          convolve_y_4tap_16x2_avx2(data, src_stride, coeffs, d, s, res);

          round_pack_store_y_16x2_avx2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[2] = s[3];

        } while (y > 0);

      } else {

        assert(!(w % 32));

        __m256i d[4], s1[4], s2[4];

        do {

          data = src_ptr + x;

          dst_ptr = dst + x;

          y = h;

          d[0] = _mm256_loadu_si256((__m256i *)(data + 0 * src_stride));

          d[1] = _mm256_loadu_si256((__m256i *)(data + 1 * src_stride));

          d[2] = _mm256_loadu_si256((__m256i *)(data + 2 * src_stride));

          s1[0] = _mm256_unpacklo_epi8(d[0], d[1]);

          s1[2] = _mm256_unpackhi_epi8(d[0], d[1]);

          s2[0] = _mm256_unpacklo_epi8(d[1], d[2]);

          s2[2] = _mm256_unpackhi_epi8(d[1], d[2]);

          do {

            __m256i res[4];

            convolve_y_4tap_32x2_avx2(data, src_stride, coeffs, d, s1, s2, res);

            round_pack_store_y_32x2_avx2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

            s1[0] = s1[1];

            s1[2] = s1[3];

            s2[0] = s2[1];

            s2[2] = s2[3];

          } while (y > 0);

          x += 32;

        } while (x < w);

      }

    }

  } else if (vert_tap == 6) {

    if (w <= 4) {

      prepare_coeffs_6t_ssse3(filter_params_y, subpel_y_qn, coeffs_128);

      __m128i d[6], s[3];

      if (w == 2) {

        d[0] = _mm_cvtsi32_si128(loadu_int16(data + 0 * src_stride));

        d[1] = _mm_cvtsi32_si128(loadu_int16(data + 1 * src_stride));

        d[2] = _mm_cvtsi32_si128(loadu_int16(data + 2 * src_stride));

        d[3] = _mm_cvtsi32_si128(loadu_int16(data + 3 * src_stride));

        d[4] = _mm_cvtsi32_si128(loadu_int16(data + 4 * src_stride));

        const __m128i src_01a = _mm_unpacklo_epi16(d[0], d[1]);

        const __m128i src_12a = _mm_unpacklo_epi16(d[1], d[2]);

        const __m128i src_23a = _mm_unpacklo_epi16(d[2], d[3]);

        const __m128i src_34a = _mm_unpacklo_epi16(d[3], d[4]);

        s[0] = _mm_unpacklo_epi8(src_01a, src_12a);

        s[1] = _mm_unpacklo_epi8(src_23a, src_34a);

        do {

          __m128i res;

          convolve_y_6tap_2x2_ssse3(data, src_stride, coeffs_128, d, s, &res);

          res = round_sr_y_ssse3(res);

          pack_store_u8_2x2_sse2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[1] = s[2];

        } while (y > 0);

      } else {

        assert(w == 4);

        d[0] = _mm_cvtsi32_si128(loadu_int32(data + 0 * src_stride));

        d[1] = _mm_cvtsi32_si128(loadu_int32(data + 1 * src_stride));

        d[2] = _mm_cvtsi32_si128(loadu_int32(data + 2 * src_stride));

        d[3] = _mm_cvtsi32_si128(loadu_int32(data + 3 * src_stride));

        d[4] = _mm_cvtsi32_si128(loadu_int32(data + 4 * src_stride));

        const __m128i src_01a = _mm_unpacklo_epi32(d[0], d[1]);

        const __m128i src_12a = _mm_unpacklo_epi32(d[1], d[2]);

        const __m128i src_23a = _mm_unpacklo_epi32(d[2], d[3]);

        const __m128i src_34a = _mm_unpacklo_epi32(d[3], d[4]);

        s[0] = _mm_unpacklo_epi8(src_01a, src_12a);

        s[1] = _mm_unpacklo_epi8(src_23a, src_34a);

        do {

          __m128i res;

          convolve_y_6tap_4x2_ssse3(data, src_stride, coeffs_128, d, s, &res);

          res = round_sr_y_ssse3(res);

          pack_store_u8_4x2_sse2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[1] = s[2];

        } while (y > 0);

      }

    } else {

      prepare_coeffs_6t_lowbd(filter_params_y, subpel_y_qn, coeffs);

      if (w == 8) {

        __m128i d[6];

        __m256i s[3];

        d[0] = _mm_loadl_epi64((__m128i *)(data + 0 * src_stride));

        d[1] = _mm_loadl_epi64((__m128i *)(data + 1 * src_stride));

        d[2] = _mm_loadl_epi64((__m128i *)(data + 2 * src_stride));

        d[3] = _mm_loadl_epi64((__m128i *)(data + 3 * src_stride));

        d[4] = _mm_loadl_epi64((__m128i *)(data + 4 * src_stride));

        const __m256i src_01a = _mm256_setr_m128i(d[0], d[1]);

        const __m256i src_12a = _mm256_setr_m128i(d[1], d[2]);

        const __m256i src_23a = _mm256_setr_m128i(d[2], d[3]);

        const __m256i src_34a = _mm256_setr_m128i(d[3], d[4]);

        s[0] = _mm256_unpacklo_epi8(src_01a, src_12a);

        s[1] = _mm256_unpacklo_epi8(src_23a, src_34a);

        do {

          __m256i res;

          convolve_y_6tap_8x2_avx2(data, src_stride, coeffs, d, s, &res);

          round_pack_store_y_8x2_avx2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[1] = s[2];

        } while (y > 0);

      } else {

        assert(!(w % 16));

        __m128i d[6];

        __m256i s[6];

        do {

          data = src_ptr + x;

          dst_ptr = dst + x;

          y = h;

          d[0] = _mm_loadu_si128((__m128i *)(data + 0 * src_stride));

          d[1] = _mm_loadu_si128((__m128i *)(data + 1 * src_stride));

          d[2] = _mm_loadu_si128((__m128i *)(data + 2 * src_stride));

          d[3] = _mm_loadu_si128((__m128i *)(data + 3 * src_stride));

          d[4] = _mm_loadu_si128((__m128i *)(data + 4 * src_stride));

          const __m256i src_01a = _mm256_setr_m128i(d[0], d[1]);

          const __m256i src_12a = _mm256_setr_m128i(d[1], d[2]);

          const __m256i src_23a = _mm256_setr_m128i(d[2], d[3]);

          const __m256i src_34a = _mm256_setr_m128i(d[3], d[4]);

          s[0] = _mm256_unpacklo_epi8(src_01a, src_12a);

          s[1] = _mm256_unpacklo_epi8(src_23a, src_34a);

          s[3] = _mm256_unpackhi_epi8(src_01a, src_12a);

          s[4] = _mm256_unpackhi_epi8(src_23a, src_34a);

          do {

            __m256i res[2];

            convolve_y_6tap_16x2_avx2(data, src_stride, coeffs, d, s, res);

            round_pack_store_y_16x2_avx2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

            s[0] = s[1];

            s[1] = s[2];

            s[3] = s[4];

            s[4] = s[5];

          } while (y > 0);

          x += 16;

        } while (x < w);

      }

    }

  } else if (vert_tap == 12) {  // vert_tap == 12

    __m128i d[12];

    __m256i s[12];

    prepare_coeffs_12taps(filter_params_y, subpel_y_qn, coeffs);

    const __m256i v_zero = _mm256_setzero_si256();

    __m128i right_shift = _mm_cvtsi32_si128(FILTER_BITS);

    __m256i right_shift_const = _mm256_set1_epi32((1 << FILTER_BITS) >> 1);

    for (int j = 0; j < w; j += 8) {

      data = &src_ptr[j];

      __m256i src10;

      d[0] = _mm_loadl_epi64((__m128i *)(data + 0 * src_stride));

      d[1] = _mm_loadl_epi64((__m128i *)(data + 1 * src_stride));

      d[2] = _mm_loadl_epi64((__m128i *)(data + 2 * src_stride));

      d[3] = _mm_loadl_epi64((__m128i *)(data + 3 * src_stride));

      d[4] = _mm_loadl_epi64((__m128i *)(data + 4 * src_stride));

      d[5] = _mm_loadl_epi64((__m128i *)(data + 5 * src_stride));

      d[6] = _mm_loadl_epi64((__m128i *)(data + 6 * src_stride));

      d[7] = _mm_loadl_epi64((__m128i *)(data + 7 * src_stride));

      d[8] = _mm_loadl_epi64((__m128i *)(data + 8 * src_stride));

      d[9] = _mm_loadl_epi64((__m128i *)(data + 9 * src_stride));

      // 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(d[0]), _mm256_castsi128_si256(d[1]), 0x20);

      const __m256i src_12a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[1]), _mm256_castsi128_si256(d[2]), 0x20);

      const __m256i src_23a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[2]), _mm256_castsi128_si256(d[3]), 0x20);

      const __m256i src_34a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[3]), _mm256_castsi128_si256(d[4]), 0x20);

      const __m256i src_45a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[4]), _mm256_castsi128_si256(d[5]), 0x20);

      const __m256i src_56a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[5]), _mm256_castsi128_si256(d[6]), 0x20);

      const __m256i src_67a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[6]), _mm256_castsi128_si256(d[7]), 0x20);

      const __m256i src_78a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[7]), _mm256_castsi128_si256(d[8]), 0x20);

      const __m256i src_89a = _mm256_permute2x128_si256(

          _mm256_castsi128_si256(d[8]), _mm256_castsi128_si256(d[9]), 0x20);

      src10 = _mm256_castsi128_si256(

          _mm_loadl_epi64((__m128i *)(data + 10 * src_stride)));

      const __m256i src_910a =

          _mm256_permute2x128_si256(_mm256_castsi128_si256(d[9]), src10, 0x20);

      const __m256i src_01 = _mm256_unpacklo_epi8(src_01a, v_zero);

      const __m256i src_12 = _mm256_unpacklo_epi8(src_12a, v_zero);

      const __m256i src_23 = _mm256_unpacklo_epi8(src_23a, v_zero);

      const __m256i src_34 = _mm256_unpacklo_epi8(src_34a, v_zero);

      const __m256i src_45 = _mm256_unpacklo_epi8(src_45a, v_zero);

      const __m256i src_56 = _mm256_unpacklo_epi8(src_56a, v_zero);

      const __m256i src_67 = _mm256_unpacklo_epi8(src_67a, v_zero);

      const __m256i src_78 = _mm256_unpacklo_epi8(src_78a, v_zero);

      const __m256i src_89 = _mm256_unpacklo_epi8(src_89a, v_zero);

      const __m256i src_910 = _mm256_unpacklo_epi8(src_910a, v_zero);

      s[0] = _mm256_unpacklo_epi16(src_01, src_12);

      s[1] = _mm256_unpacklo_epi16(src_23, src_34);

      s[2] = _mm256_unpacklo_epi16(src_45, src_56);

      s[3] = _mm256_unpacklo_epi16(src_67, src_78);

      s[4] = _mm256_unpacklo_epi16(src_89, src_910);

      s[6] = _mm256_unpackhi_epi16(src_01, src_12);

      s[7] = _mm256_unpackhi_epi16(src_23, src_34);

      s[8] = _mm256_unpackhi_epi16(src_45, src_56);

      s[9] = _mm256_unpackhi_epi16(src_67, src_78);

      s[10] = _mm256_unpackhi_epi16(src_89, src_910);

      for (i = 0; i < h; i += 2) {

        data = &src_ptr[i * src_stride + j];

        const __m256i src_1011a = _mm256_permute2x128_si256(

            src10,

            _mm256_castsi128_si256(

                _mm_loadl_epi64((__m128i *)(data + 11 * src_stride))),

            0x20);

        src10 = _mm256_castsi128_si256(

            _mm_loadl_epi64((__m128i *)(data + 12 * src_stride)));

        const __m256i src_1112a = _mm256_permute2x128_si256(

            _mm256_castsi128_si256(

                _mm_loadl_epi64((__m128i *)(data + 11 * src_stride))),

            src10, 0x20);

        const __m256i src_1011 = _mm256_unpacklo_epi8(src_1011a, v_zero);

        const __m256i src_1112 = _mm256_unpacklo_epi8(src_1112a, v_zero);

        s[5] = _mm256_unpacklo_epi16(src_1011, src_1112);

        s[11] = _mm256_unpackhi_epi16(src_1011, src_1112);

        const __m256i res_lo = convolve_12taps(s, coeffs);

        const __m256i res_32b_lo = _mm256_sra_epi32(

            _mm256_add_epi32(res_lo, right_shift_const), right_shift);

        // 8 bit conversion and saturation to uint8

        __m256i res_16b_lo = _mm256_packs_epi32(res_32b_lo, res_32b_lo);

        __m256i res_8b_lo = _mm256_packus_epi16(res_16b_lo, res_16b_lo);

        if (w - j > 4) {

          const __m256i res_hi = convolve_12taps(s + 6, coeffs);

          const __m256i res_32b_hi = _mm256_sra_epi32(

              _mm256_add_epi32(res_hi, right_shift_const), right_shift);

          __m256i res_16b_hi = _mm256_packs_epi32(res_32b_hi, res_32b_hi);

          // 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_epi32(res_8b_lo, res_8b_hi);

          const __m128i res_0 = _mm256_extracti128_si256(res_a, 0);

          const __m128i res_1 = _mm256_extracti128_si256(res_a, 1);

          _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 {

          const __m128i res_0 = _mm256_extracti128_si256(res_8b_lo, 0);

          const __m128i res_1 = _mm256_extracti128_si256(res_8b_lo, 1);

          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 {

            xx_storel_16(&dst[i * dst_stride + j], res_0);

            xx_storel_16(&dst[i * dst_stride + j + dst_stride], res_1);

          }

        }

        s[0] = s[1];

        s[1] = s[2];

        s[2] = s[3];

        s[3] = s[4];

        s[4] = s[5];

        s[6] = s[7];

        s[7] = s[8];

        s[8] = s[9];

        s[9] = s[10];

        s[10] = s[11];

      }

    }

  } else {

    assert(vert_tap == 8);

    if (w <= 4) {

      prepare_coeffs_ssse3(filter_params_y, subpel_y_qn, coeffs_128);

      __m128i d[8], s[4], res;

      if (w == 2) {

        d[0] = _mm_cvtsi32_si128(loadu_int16(data + 0 * src_stride));

        d[1] = _mm_cvtsi32_si128(loadu_int16(data + 1 * src_stride));

        d[2] = _mm_cvtsi32_si128(loadu_int16(data + 2 * src_stride));

        d[3] = _mm_cvtsi32_si128(loadu_int16(data + 3 * src_stride));

        d[4] = _mm_cvtsi32_si128(loadu_int16(data + 4 * src_stride));

        d[5] = _mm_cvtsi32_si128(loadu_int16(data + 5 * src_stride));

        d[6] = _mm_cvtsi32_si128(loadu_int16(data + 6 * src_stride));

        const __m128i src_01a = _mm_unpacklo_epi16(d[0], d[1]);

        const __m128i src_12a = _mm_unpacklo_epi16(d[1], d[2]);

        const __m128i src_23a = _mm_unpacklo_epi16(d[2], d[3]);

        const __m128i src_34a = _mm_unpacklo_epi16(d[3], d[4]);

        const __m128i src_45a = _mm_unpacklo_epi16(d[4], d[5]);

        const __m128i src_56a = _mm_unpacklo_epi16(d[5], d[6]);

        s[0] = _mm_unpacklo_epi8(src_01a, src_12a);

        s[1] = _mm_unpacklo_epi8(src_23a, src_34a);

        s[2] = _mm_unpacklo_epi8(src_45a, src_56a);

        do {

          convolve_y_8tap_2x2_ssse3(data, src_stride, coeffs_128, d, s, &res);

          res = round_sr_y_ssse3(res);

          pack_store_u8_2x2_sse2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[1] = s[2];

          s[2] = s[3];

        } while (y > 0);

      } else {

        assert(w == 4);

        d[0] = _mm_cvtsi32_si128(loadu_int32(data + 0 * src_stride));

        d[1] = _mm_cvtsi32_si128(loadu_int32(data + 1 * src_stride));

        d[2] = _mm_cvtsi32_si128(loadu_int32(data + 2 * src_stride));

        d[3] = _mm_cvtsi32_si128(loadu_int32(data + 3 * src_stride));

        d[4] = _mm_cvtsi32_si128(loadu_int32(data + 4 * src_stride));

        d[5] = _mm_cvtsi32_si128(loadu_int32(data + 5 * src_stride));

        d[6] = _mm_cvtsi32_si128(loadu_int32(data + 6 * src_stride));

        const __m128i src_01a = _mm_unpacklo_epi32(d[0], d[1]);

        const __m128i src_12a = _mm_unpacklo_epi32(d[1], d[2]);

        const __m128i src_23a = _mm_unpacklo_epi32(d[2], d[3]);

        const __m128i src_34a = _mm_unpacklo_epi32(d[3], d[4]);

        const __m128i src_45a = _mm_unpacklo_epi32(d[4], d[5]);

        const __m128i src_56a = _mm_unpacklo_epi32(d[5], d[6]);

        s[0] = _mm_unpacklo_epi8(src_01a, src_12a);

        s[1] = _mm_unpacklo_epi8(src_23a, src_34a);

        s[2] = _mm_unpacklo_epi8(src_45a, src_56a);

        do {

          convolve_y_8tap_4x2_ssse3(data, src_stride, coeffs_128, d, s, &res);

          res = round_sr_y_ssse3(res);

          pack_store_u8_4x2_sse2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[1] = s[2];

          s[2] = s[3];

        } while (y > 0);

      }

    } else {

      prepare_coeffs_lowbd(filter_params_y, subpel_y_qn, coeffs);

      if (w == 8) {

        __m128i d[8];

        __m256i s[4];

        d[0] = _mm_loadl_epi64((__m128i *)(data + 0 * src_stride));

        d[1] = _mm_loadl_epi64((__m128i *)(data + 1 * src_stride));

        d[2] = _mm_loadl_epi64((__m128i *)(data + 2 * src_stride));

        d[3] = _mm_loadl_epi64((__m128i *)(data + 3 * src_stride));

        d[4] = _mm_loadl_epi64((__m128i *)(data + 4 * src_stride));

        d[5] = _mm_loadl_epi64((__m128i *)(data + 5 * src_stride));

        d[6] = _mm_loadl_epi64((__m128i *)(data + 6 * src_stride));

        const __m256i src_01a = _mm256_setr_m128i(d[0], d[1]);

        const __m256i src_12a = _mm256_setr_m128i(d[1], d[2]);

        const __m256i src_23a = _mm256_setr_m128i(d[2], d[3]);

        const __m256i src_34a = _mm256_setr_m128i(d[3], d[4]);

        const __m256i src_45a = _mm256_setr_m128i(d[4], d[5]);

        const __m256i src_56a = _mm256_setr_m128i(d[5], d[6]);

        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);

        do {

          __m256i res;

          convolve_y_8tap_8x2_avx2(data, src_stride, coeffs, d, s, &res);

          round_pack_store_y_8x2_avx2(res, dst_ptr, dst_stride);

          dst_ptr += 2 * dst_stride;

          data += 2 * src_stride;

          y -= 2;

          s[0] = s[1];

          s[1] = s[2];

          s[2] = s[3];

        } while (y > 0);

      } else {

        assert(!(w % 16));

        __m128i d[8];

        __m256i s[8];

        do {

          data = src_ptr + x;

          dst_ptr = dst + x;

          y = h;

          d[0] = _mm_loadu_si128((__m128i *)(data + 0 * src_stride));

          d[1] = _mm_loadu_si128((__m128i *)(data + 1 * src_stride));

          d[2] = _mm_loadu_si128((__m128i *)(data + 2 * src_stride));

          d[3] = _mm_loadu_si128((__m128i *)(data + 3 * src_stride));

          d[4] = _mm_loadu_si128((__m128i *)(data + 4 * src_stride));

          d[5] = _mm_loadu_si128((__m128i *)(data + 5 * src_stride));

          d[6] = _mm_loadu_si128((__m128i *)(data + 6 * src_stride));

          const __m256i src_01a = _mm256_setr_m128i(d[0], d[1]);

          const __m256i src_12a = _mm256_setr_m128i(d[1], d[2]);

          const __m256i src_23a = _mm256_setr_m128i(d[2], d[3]);

          const __m256i src_34a = _mm256_setr_m128i(d[3], d[4]);

          const __m256i src_45a = _mm256_setr_m128i(d[4], d[5]);

          const __m256i src_56a = _mm256_setr_m128i(d[5], d[6]);

          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);

          do {

            __m256i res[2];

            convolve_y_8tap_16x2_avx2(data, src_stride, coeffs, d, s, res);

            round_pack_store_y_16x2_avx2(res, dst_ptr, dst_stride);

            dst_ptr += 2 * dst_stride;

            data += 2 * src_stride;

            y -= 2;

            s[0] = s[1];

            s[1] = s[2];

            s[2] = s[3];

            s[4] = s[5];

            s[5] = s[6];

            s[6] = s[7];

          } while (y > 0);

          x += 16;

        } while (x < w);

      }

    }

  }

}

void av1_convolve_x_sr_avx2(const uint8_t *src, int32_t src_stride,

                            uint8_t *dst, int32_t dst_stride, int32_t w,

                            int32_t h,

                            const InterpFilterParams *filter_params_x,

                            const int32_t subpel_x_qn,

                            ConvolveParams *conv_params) {

  const int bits = FILTER_BITS - conv_params->round_0;

  int i, j, horiz_tap = get_filter_tap(filter_params_x, subpel_x_qn);

  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);

  assert(horiz_tap == 2 || horiz_tap == 4 || horiz_tap == 6 || horiz_tap == 8 ||

         horiz_tap == 12);

  assert((!(w % 2)) || (w <= 128));

  assert((h % 2) == 0);

  __m256i coeffs[6] = { 0 }, filt[4] = { 0 };

  __m128i coeffs_128[4] = { 0 };

  i = 0;

  // horz_filt as 4 tap

  if (horiz_tap == 4) {

    // since fo_horiz = 1

    const uint8_t *src_ptr = src - 1;

    if (w == 2) {

      prepare_coeffs_4t_ssse3(filter_params_x, subpel_x_qn, coeffs_128);

      do {

        const __m128i res =

            convolve_x_4tap_2x2_ssse3(src_ptr, src_stride, coeffs_128);

        const __m128i reg = round_sr_x_ssse3(res);

        pack_store_u8_2x2_sse2(reg, dst, dst_stride);

        src_ptr += 2 * src_stride;

        dst += 2 * dst_stride;

        h -= 2;

      } while (h);

    } else if (w == 4) {

      prepare_coeffs_4t_ssse3(filter_params_x, subpel_x_qn, coeffs_128);

      do {

        const __m128i reg =

            convolve_x_4tap_4x2_ssse3(src_ptr, src_stride, coeffs_128);

        const __m128i res = round_sr_x_ssse3(reg);

        pack_store_u8_4x2_sse2(res, dst, dst_stride);

        src_ptr += 2 * src_stride;

        dst += 2 * dst_stride;

        h -= 2;

      } while (h);

    } else if (w == 8) {

      prepare_coeffs_lowbd(filter_params_x, subpel_x_qn, coeffs);

      filt[0] = _mm256_load_si256((__m256i const *)(filt_global_avx2));

      filt[1] = _mm256_load_si256((__m256i const *)(filt_global_avx2 + 32));

      do {

        const __m256i data = _mm256_setr_m128i(

            _mm_loadu_si128((__m128i *)(&src_ptr[i * src_stride])),

            _mm_loadu_si128(

                (__m128i *)(&src_ptr[i * src_stride + src_stride])));

        __m256i res_16b = convolve_lowbd_x_4tap(data, coeffs + 1, filt);

        res_16b = round_sr_x_avx2(res_16b);

        /* 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);

        _mm_storel_epi64((__m128i *)&dst[i * dst_stride], res_0);

        _mm_storel_epi64((__m128i *)&dst[i * dst_stride + dst_stride], res_1);

        i += 2;

      } while (i < h);

    } else {

      assert(!(w % 16));

      prepare_coeffs_lowbd(filter_params_x, subpel_x_qn, coeffs);

      filt[0] = _mm256_load_si256((__m256i const *)(filt_global_avx2));

      filt[1] = _mm256_load_si256((__m256i const *)(filt_global_avx2 + 32));

      do {

        j = 0;

        do {

          // 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_4tap(data, coeffs + 1, filt);

          res_16b = round_sr_x_avx2(res_16b);

          /* 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);

          j += 16;

        } while (j < w);

        i++;

      } while (i < h);

    }

  } else if (horiz_tap == 6) {

    // since (horiz_tap/2 - 1 == 2)

    const uint8_t *src_ptr = src - 2;

    prepare_coeffs_6t_lowbd(filter_params_x, subpel_x_qn, coeffs);

    filt[0] = _mm256_load_si256((__m256i const *)(filt_global_avx2));

    filt[1] = _mm256_load_si256((__m256i const *)(filt_global_avx2 + 32));

    filt[2] = _mm256_load_si256((__m256i const *)(filt_global_avx2 + 32 * 2));

    if (w == 8) {

      do {

        const __m256i data = _mm256_setr_m128i(

            _mm_loadu_si128((__m128i *)(&src_ptr[i * src_stride])),

            _mm_loadu_si128(

                (__m128i *)(&src_ptr[i * src_stride + src_stride])));

        __m256i res_16b = convolve_lowbd_x_6tap(data, coeffs, filt);

        res_16b = round_sr_x_avx2(res_16b);

        /* 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);

        _mm_storel_epi64((__m128i *)&dst[i * dst_stride], res_0);

        _mm_storel_epi64((__m128i *)&dst[i * dst_stride + dst_stride], res_1);

        i += 2;

      } while (i < h);

    } else if (w == 16) {

      do {

        __m256i data[2] = { 0 };

        load_convolve_6tap_16x2_avx2(src_ptr, src_stride, coeffs, filt, data);

        round_pack_store_16x2_avx2(data, dst, dst_stride);

        src_ptr += 2 * src_stride;

        dst += 2 * dst_stride;

        h -= 2;

      } while (h);

    } else if (w == 32) {

      do {

        convolve_sr_store_6tap_32_avx2(src_ptr, coeffs, filt, dst);

        src_ptr += src_stride;

        dst += dst_stride;

      } while ((--h) > 0);

    } else if (w == 64) {

      do {

        convolve_sr_store_6tap_32_avx2(src_ptr, coeffs, filt, dst);

        convolve_sr_store_6tap_32_avx2(src_ptr + 32, coeffs, filt, dst + 32);

        src_ptr += src_stride;

        dst += dst_stride;

      } while ((--h) > 0);

    } else {

      assert(w == 128);

      do {

        convolve_sr_store_6tap_32_avx2(src_ptr, coeffs, filt, dst);

        convolve_sr_store_6tap_32_avx2(src_ptr + SECOND_32_BLK, coeffs, filt,

                                       dst + SECOND_32_BLK);

        convolve_sr_store_6tap_32_avx2(src_ptr + THIRD_32_BLK, coeffs, filt,

                                       dst + THIRD_32_BLK);