av1/common/x86/jnt_convolve_ssse3.c - aom - Git at Google

 /*
  * Copyright (c) 2018, 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 <tmmintrin.h>

 #include "config/aom_dsp_rtcd.h"

 #include "aom_dsp/aom_filter.h"
 #include "aom_dsp/x86/convolve_sse2.h"

 void av1_jnt_convolve_2d_ssse3(const uint8_t *src, int src_stride,
                                uint8_t *dst0, int dst_stride0, 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) {
   CONV_BUF_TYPE *dst = conv_params->dst;
   int dst_stride = conv_params->dst_stride;
   const int bd = 8;

   DECLARE_ALIGNED(16, int16_t,
                   im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);
   int im_h = h + filter_params_y->taps - 1;
   int im_stride = MAX_SB_SIZE;
   int i, j;
   const int fo_vert = filter_params_y->taps / 2 - 1;
   const int fo_horiz = filter_params_x->taps / 2 - 1;
   const int do_average = conv_params->do_average;
   const int use_jnt_comp_avg = conv_params->use_jnt_comp_avg;
   const uint8_t *const src_ptr = src - fo_vert * src_stride - fo_horiz;

   const __m128i zero = _mm_setzero_si128();

   const int w0 = conv_params->fwd_offset;
   const int w1 = conv_params->bck_offset;
   const __m128i wt0 = _mm_set1_epi16(w0);
   const __m128i wt1 = _mm_set1_epi16(w1);
   const __m128i wt = _mm_unpacklo_epi16(wt0, wt1);

   const int offset_0 =
       bd + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
   const int offset = (1 << offset_0) + (1 << (offset_0 - 1));
   const __m128i offset_const = _mm_set1_epi16(offset);
   const int rounding_shift =
       2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
   const __m128i rounding_const = _mm_set1_epi16((1 << rounding_shift) >> 1);

   /* Horizontal filter */
   {
     const int16_t *x_filter = av1_get_interp_filter_subpel_kernel(
         *filter_params_x, subpel_x_q4 & SUBPEL_MASK);
     const __m128i coeffs_x = _mm_loadu_si128((__m128i *)x_filter);

     // coeffs 0 1 0 1 2 3 2 3
     const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_x, coeffs_x);
     // coeffs 4 5 4 5 6 7 6 7
     const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_x, coeffs_x);

     // coeffs 0 1 0 1 0 1 0 1
     const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
     // coeffs 2 3 2 3 2 3 2 3
     const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
     // coeffs 4 5 4 5 4 5 4 5
     const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
     // coeffs 6 7 6 7 6 7 6 7
     const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);

     const __m128i round_const = _mm_set1_epi32(
         ((1 << conv_params->round_0) >> 1) + (1 << (bd + FILTER_BITS - 1)));
     const __m128i round_shift = _mm_cvtsi32_si128(conv_params->round_0);

     for (i = 0; i < im_h; ++i) {
       for (j = 0; j < w; j += 8) {
         const __m128i data =
             _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]);

         const __m128i src_lo = _mm_unpacklo_epi8(data, zero);
         const __m128i src_hi = _mm_unpackhi_epi8(data, zero);

         // Filter even-index pixels
         const __m128i res_0 = _mm_madd_epi16(src_lo, coeff_01);
         const __m128i src_2 = _mm_alignr_epi8(src_hi, src_lo, 4);
         const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
         const __m128i src_4 = _mm_alignr_epi8(src_hi, src_lo, 8);
         const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
         const __m128i src_6 = _mm_alignr_epi8(src_hi, src_lo, 12);
         const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);

         __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4),
                                          _mm_add_epi32(res_2, res_6));
         res_even =
             _mm_sra_epi32(_mm_add_epi32(res_even, round_const), round_shift);

         // Filter odd-index pixels
         const __m128i src_1 = _mm_alignr_epi8(src_hi, src_lo, 2);
         const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
         const __m128i src_3 = _mm_alignr_epi8(src_hi, src_lo, 6);
         const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
         const __m128i src_5 = _mm_alignr_epi8(src_hi, src_lo, 10);
         const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
         const __m128i src_7 = _mm_alignr_epi8(src_hi, src_lo, 14);
         const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);

         __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5),
                                         _mm_add_epi32(res_3, res_7));
         res_odd =
             _mm_sra_epi32(_mm_add_epi32(res_odd, round_const), round_shift);

         // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7
         __m128i res = _mm_packs_epi32(res_even, res_odd);
         _mm_store_si128((__m128i *)&im_block[i * im_stride + j], res);
       }
     }
   }

   /* Vertical filter */
   {
     const int16_t *y_filter = av1_get_interp_filter_subpel_kernel(
         *filter_params_y, subpel_y_q4 & SUBPEL_MASK);
     const __m128i coeffs_y = _mm_loadu_si128((__m128i *)y_filter);

     // coeffs 0 1 0 1 2 3 2 3
     const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_y, coeffs_y);
     // coeffs 4 5 4 5 6 7 6 7
     const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_y, coeffs_y);

     // coeffs 0 1 0 1 0 1 0 1
     const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
     // coeffs 2 3 2 3 2 3 2 3
     const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
     // coeffs 4 5 4 5 4 5 4 5
     const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
     // coeffs 6 7 6 7 6 7 6 7
     const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);

     const __m128i round_const = _mm_set1_epi32(
         ((1 << conv_params->round_1) >> 1) -
         (1 << (bd + 2 * FILTER_BITS - conv_params->round_0 - 1)));
     const __m128i round_shift = _mm_cvtsi32_si128(conv_params->round_1);

     for (i = 0; i < h; ++i) {
       for (j = 0; j < w; j += 8) {
         // Filter even-index pixels
         const int16_t *data = &im_block[i * im_stride + j];
         const __m128i src_0 =
             _mm_unpacklo_epi16(*(__m128i *)(data + 0 * im_stride),
                                *(__m128i *)(data + 1 * im_stride));
         const __m128i src_2 =
             _mm_unpacklo_epi16(*(__m128i *)(data + 2 * im_stride),
                                *(__m128i *)(data + 3 * im_stride));
         const __m128i src_4 =
             _mm_unpacklo_epi16(*(__m128i *)(data + 4 * im_stride),
                                *(__m128i *)(data + 5 * im_stride));
         const __m128i src_6 =
             _mm_unpacklo_epi16(*(__m128i *)(data + 6 * im_stride),
                                *(__m128i *)(data + 7 * im_stride));

         const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01);
         const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
         const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
         const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);

         const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2),
                                                _mm_add_epi32(res_4, res_6));

         // Filter odd-index pixels
         const __m128i src_1 =
             _mm_unpackhi_epi16(*(__m128i *)(data + 0 * im_stride),
                                *(__m128i *)(data + 1 * im_stride));
         const __m128i src_3 =
             _mm_unpackhi_epi16(*(__m128i *)(data + 2 * im_stride),
                                *(__m128i *)(data + 3 * im_stride));
         const __m128i src_5 =
             _mm_unpackhi_epi16(*(__m128i *)(data + 4 * im_stride),
                                *(__m128i *)(data + 5 * im_stride));
         const __m128i src_7 =
             _mm_unpackhi_epi16(*(__m128i *)(data + 6 * im_stride),
                                *(__m128i *)(data + 7 * im_stride));

         const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
         const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
         const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
         const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);

         const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3),
                                               _mm_add_epi32(res_5, res_7));

         // Rearrange pixels back into the order 0 ... 7
         const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd);
         const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd);

         const __m128i res_lo_round =
             _mm_sra_epi32(_mm_add_epi32(res_lo, round_const), round_shift);
         const __m128i res_hi_round =
             _mm_sra_epi32(_mm_add_epi32(res_hi, round_const), round_shift);

         const __m128i res_16b = _mm_packs_epi32(res_lo_round, res_hi_round);
         const __m128i res_unsigned = _mm_add_epi16(res_16b, offset_const);

         // Accumulate values into the destination buffer
         if (do_average) {
           const __m128i data_ref_0 =
               _mm_loadu_si128((__m128i *)(&dst[i * dst_stride + j]));

           const __m128i comp_avg_res =
               comp_avg(&data_ref_0, &res_unsigned, &wt, use_jnt_comp_avg);

           const __m128i round_result = convolve_rounding(
               &comp_avg_res, &offset_const, &rounding_const, rounding_shift);

           const __m128i res_8 = _mm_packus_epi16(round_result, round_result);

           if (w > 4)
             _mm_storel_epi64((__m128i *)(&dst0[i * dst_stride0 + j]), res_8);
           else
             *(uint32_t *)(&dst0[i * dst_stride0 + j]) =
                 _mm_cvtsi128_si32(res_8);
         } else {
           _mm_store_si128((__m128i *)(&dst[i * dst_stride + j]), res_unsigned);
         }
       }
     }
   }
 }
	/*
	* Copyright (c) 2018, 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 <tmmintrin.h>

	#include "config/aom_dsp_rtcd.h"

	#include "aom_dsp/aom_filter.h"
	#include "aom_dsp/x86/convolve_sse2.h"

	void av1_jnt_convolve_2d_ssse3(const uint8_t *src, int src_stride,
	uint8_t *dst0, int dst_stride0, 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) {
	CONV_BUF_TYPE *dst = conv_params->dst;
	int dst_stride = conv_params->dst_stride;
	const int bd = 8;

	DECLARE_ALIGNED(16, int16_t,
	im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);
	int im_h = h + filter_params_y->taps - 1;
	int im_stride = MAX_SB_SIZE;
	int i, j;
	const int fo_vert = filter_params_y->taps / 2 - 1;
	const int fo_horiz = filter_params_x->taps / 2 - 1;
	const int do_average = conv_params->do_average;
	const int use_jnt_comp_avg = conv_params->use_jnt_comp_avg;
	const uint8_t const src_ptr = src - fo_vert src_stride - fo_horiz;

	const __m128i zero = _mm_setzero_si128();

	const int w0 = conv_params->fwd_offset;
	const int w1 = conv_params->bck_offset;
	const __m128i wt0 = _mm_set1_epi16(w0);
	const __m128i wt1 = _mm_set1_epi16(w1);
	const __m128i wt = _mm_unpacklo_epi16(wt0, wt1);

	const int offset_0 =
	bd + 2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
	const int offset = (1 << offset_0) + (1 << (offset_0 - 1));
	const __m128i offset_const = _mm_set1_epi16(offset);
	const int rounding_shift =
	2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
	const __m128i rounding_const = _mm_set1_epi16((1 << rounding_shift) >> 1);

	/* Horizontal filter */
	{
	const int16_t *x_filter = av1_get_interp_filter_subpel_kernel(
	*filter_params_x, subpel_x_q4 & SUBPEL_MASK);
	const __m128i coeffs_x = _mm_loadu_si128((__m128i *)x_filter);

	// coeffs 0 1 0 1 2 3 2 3
	const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_x, coeffs_x);
	// coeffs 4 5 4 5 6 7 6 7
	const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_x, coeffs_x);

	// coeffs 0 1 0 1 0 1 0 1
	const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
	// coeffs 2 3 2 3 2 3 2 3
	const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
	// coeffs 4 5 4 5 4 5 4 5
	const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
	// coeffs 6 7 6 7 6 7 6 7
	const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);

	const __m128i round_const = _mm_set1_epi32(
	((1 << conv_params->round_0) >> 1) + (1 << (bd + FILTER_BITS - 1)));
	const __m128i round_shift = _mm_cvtsi32_si128(conv_params->round_0);

	for (i = 0; i < im_h; ++i) {
	for (j = 0; j < w; j += 8) {
	const __m128i data =
	_mm_loadu_si128((__m128i )&src_ptr[i src_stride + j]);

	const __m128i src_lo = _mm_unpacklo_epi8(data, zero);
	const __m128i src_hi = _mm_unpackhi_epi8(data, zero);

	// Filter even-index pixels
	const __m128i res_0 = _mm_madd_epi16(src_lo, coeff_01);
	const __m128i src_2 = _mm_alignr_epi8(src_hi, src_lo, 4);
	const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
	const __m128i src_4 = _mm_alignr_epi8(src_hi, src_lo, 8);
	const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
	const __m128i src_6 = _mm_alignr_epi8(src_hi, src_lo, 12);
	const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);

	__m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_4),
	_mm_add_epi32(res_2, res_6));
	res_even =
	_mm_sra_epi32(_mm_add_epi32(res_even, round_const), round_shift);

	// Filter odd-index pixels
	const __m128i src_1 = _mm_alignr_epi8(src_hi, src_lo, 2);
	const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
	const __m128i src_3 = _mm_alignr_epi8(src_hi, src_lo, 6);
	const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
	const __m128i src_5 = _mm_alignr_epi8(src_hi, src_lo, 10);
	const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
	const __m128i src_7 = _mm_alignr_epi8(src_hi, src_lo, 14);
	const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);

	__m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_5),
	_mm_add_epi32(res_3, res_7));
	res_odd =
	_mm_sra_epi32(_mm_add_epi32(res_odd, round_const), round_shift);

	// Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7
	__m128i res = _mm_packs_epi32(res_even, res_odd);
	_mm_store_si128((__m128i )&im_block[i im_stride + j], res);
	}
	}
	}

	/* Vertical filter */
	{
	const int16_t *y_filter = av1_get_interp_filter_subpel_kernel(
	*filter_params_y, subpel_y_q4 & SUBPEL_MASK);
	const __m128i coeffs_y = _mm_loadu_si128((__m128i *)y_filter);

	// coeffs 0 1 0 1 2 3 2 3
	const __m128i tmp_0 = _mm_unpacklo_epi32(coeffs_y, coeffs_y);
	// coeffs 4 5 4 5 6 7 6 7
	const __m128i tmp_1 = _mm_unpackhi_epi32(coeffs_y, coeffs_y);

	// coeffs 0 1 0 1 0 1 0 1
	const __m128i coeff_01 = _mm_unpacklo_epi64(tmp_0, tmp_0);
	// coeffs 2 3 2 3 2 3 2 3
	const __m128i coeff_23 = _mm_unpackhi_epi64(tmp_0, tmp_0);
	// coeffs 4 5 4 5 4 5 4 5
	const __m128i coeff_45 = _mm_unpacklo_epi64(tmp_1, tmp_1);
	// coeffs 6 7 6 7 6 7 6 7
	const __m128i coeff_67 = _mm_unpackhi_epi64(tmp_1, tmp_1);

	const __m128i round_const = _mm_set1_epi32(
	((1 << conv_params->round_1) >> 1) -
	(1 << (bd + 2 * FILTER_BITS - conv_params->round_0 - 1)));
	const __m128i round_shift = _mm_cvtsi32_si128(conv_params->round_1);

	for (i = 0; i < h; ++i) {
	for (j = 0; j < w; j += 8) {
	// Filter even-index pixels
	const int16_t data = &im_block[i im_stride + j];
	const __m128i src_0 =
	_mm_unpacklo_epi16((__m128i )(data + 0 * im_stride),
	(__m128i )(data + 1 * im_stride));
	const __m128i src_2 =
	_mm_unpacklo_epi16((__m128i )(data + 2 * im_stride),
	(__m128i )(data + 3 * im_stride));
	const __m128i src_4 =
	_mm_unpacklo_epi16((__m128i )(data + 4 * im_stride),
	(__m128i )(data + 5 * im_stride));
	const __m128i src_6 =
	_mm_unpacklo_epi16((__m128i )(data + 6 * im_stride),
	(__m128i )(data + 7 * im_stride));

	const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01);
	const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23);
	const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45);
	const __m128i res_6 = _mm_madd_epi16(src_6, coeff_67);

	const __m128i res_even = _mm_add_epi32(_mm_add_epi32(res_0, res_2),
	_mm_add_epi32(res_4, res_6));

	// Filter odd-index pixels
	const __m128i src_1 =
	_mm_unpackhi_epi16((__m128i )(data + 0 * im_stride),
	(__m128i )(data + 1 * im_stride));
	const __m128i src_3 =
	_mm_unpackhi_epi16((__m128i )(data + 2 * im_stride),
	(__m128i )(data + 3 * im_stride));
	const __m128i src_5 =
	_mm_unpackhi_epi16((__m128i )(data + 4 * im_stride),
	(__m128i )(data + 5 * im_stride));
	const __m128i src_7 =
	_mm_unpackhi_epi16((__m128i )(data + 6 * im_stride),
	(__m128i )(data + 7 * im_stride));

	const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01);
	const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23);
	const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45);
	const __m128i res_7 = _mm_madd_epi16(src_7, coeff_67);

	const __m128i res_odd = _mm_add_epi32(_mm_add_epi32(res_1, res_3),
	_mm_add_epi32(res_5, res_7));

	// Rearrange pixels back into the order 0 ... 7
	const __m128i res_lo = _mm_unpacklo_epi32(res_even, res_odd);
	const __m128i res_hi = _mm_unpackhi_epi32(res_even, res_odd);

	const __m128i res_lo_round =
	_mm_sra_epi32(_mm_add_epi32(res_lo, round_const), round_shift);
	const __m128i res_hi_round =
	_mm_sra_epi32(_mm_add_epi32(res_hi, round_const), round_shift);

	const __m128i res_16b = _mm_packs_epi32(res_lo_round, res_hi_round);
	const __m128i res_unsigned = _mm_add_epi16(res_16b, offset_const);

	// Accumulate values into the destination buffer
	if (do_average) {
	const __m128i data_ref_0 =
	_mm_loadu_si128((__m128i )(&dst[i dst_stride + j]));

	const __m128i comp_avg_res =
	comp_avg(&data_ref_0, &res_unsigned, &wt, use_jnt_comp_avg);

	const __m128i round_result = convolve_rounding(
	&comp_avg_res, &offset_const, &rounding_const, rounding_shift);

	const __m128i res_8 = _mm_packus_epi16(round_result, round_result);

	if (w > 4)
	_mm_storel_epi64((__m128i )(&dst0[i dst_stride0 + j]), res_8);
	else
	(uint32_t )(&dst0[i * dst_stride0 + j]) =
	_mm_cvtsi128_si32(res_8);
	} else {
	_mm_store_si128((__m128i )(&dst[i dst_stride + j]), res_unsigned);
	}
	}
	}
	}
	}