| /* |
| * Copyright (c) 2016, 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 <emmintrin.h> |
| #include <assert.h> |
| |
| #include "config/av1_rtcd.h" |
| |
| #include "av1/common/convolve.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| #include "aom_dsp/aom_filter.h" |
| |
| void av1_wiener_convolve_add_src_sse2(const uint8_t *src, ptrdiff_t src_stride, |
| uint8_t *dst, ptrdiff_t dst_stride, |
| const int16_t *filter_x, int x_step_q4, |
| const int16_t *filter_y, int y_step_q4, |
| int w, int h, |
| const ConvolveParams *conv_params) { |
| const int bd = 8; |
| assert(x_step_q4 == 16 && y_step_q4 == 16); |
| assert(!(w & 7)); |
| (void)x_step_q4; |
| (void)y_step_q4; |
| |
| DECLARE_ALIGNED(16, uint16_t, |
| temp[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]); |
| int intermediate_height = h + SUBPEL_TAPS - 2; |
| memset(temp + (intermediate_height * MAX_SB_SIZE), 0, MAX_SB_SIZE); |
| int i, j; |
| const int center_tap = ((SUBPEL_TAPS - 1) / 2); |
| const uint8_t *const src_ptr = src - center_tap * src_stride - center_tap; |
| |
| const __m128i zero = _mm_setzero_si128(); |
| // Add an offset to account for the "add_src" part of the convolve function. |
| const __m128i offset = _mm_insert_epi16(zero, 1 << FILTER_BITS, 3); |
| |
| /* Horizontal filter */ |
| { |
| const __m128i coeffs_x = |
| _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_x), offset); |
| |
| // 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))); |
| |
| for (i = 0; i < intermediate_height; ++i) { |
| for (j = 0; j < w; j += 8) { |
| const __m128i data = |
| _mm_loadu_si128((__m128i *)&src_ptr[i * src_stride + j]); |
| |
| // Filter even-index pixels |
| const __m128i src_0 = _mm_unpacklo_epi8(data, zero); |
| const __m128i res_0 = _mm_madd_epi16(src_0, coeff_01); |
| const __m128i src_2 = _mm_unpacklo_epi8(_mm_srli_si128(data, 2), zero); |
| const __m128i res_2 = _mm_madd_epi16(src_2, coeff_23); |
| const __m128i src_4 = _mm_unpacklo_epi8(_mm_srli_si128(data, 4), zero); |
| const __m128i res_4 = _mm_madd_epi16(src_4, coeff_45); |
| const __m128i src_6 = _mm_unpacklo_epi8(_mm_srli_si128(data, 6), zero); |
| 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_srai_epi32(_mm_add_epi32(res_even, round_const), |
| conv_params->round_0); |
| |
| // Filter odd-index pixels |
| const __m128i src_1 = _mm_unpacklo_epi8(_mm_srli_si128(data, 1), zero); |
| const __m128i res_1 = _mm_madd_epi16(src_1, coeff_01); |
| const __m128i src_3 = _mm_unpacklo_epi8(_mm_srli_si128(data, 3), zero); |
| const __m128i res_3 = _mm_madd_epi16(src_3, coeff_23); |
| const __m128i src_5 = _mm_unpacklo_epi8(_mm_srli_si128(data, 5), zero); |
| const __m128i res_5 = _mm_madd_epi16(src_5, coeff_45); |
| const __m128i src_7 = _mm_unpacklo_epi8(_mm_srli_si128(data, 7), zero); |
| 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_srai_epi32(_mm_add_epi32(res_odd, round_const), |
| conv_params->round_0); |
| |
| // Pack in the column order 0, 2, 4, 6, 1, 3, 5, 7 |
| __m128i res = _mm_packs_epi32(res_even, res_odd); |
| res = _mm_min_epi16( |
| _mm_max_epi16(res, zero), |
| _mm_set1_epi16(WIENER_CLAMP_LIMIT(conv_params->round_0, bd) - 1)); |
| _mm_storeu_si128((__m128i *)&temp[i * MAX_SB_SIZE + j], res); |
| } |
| } |
| } |
| |
| /* Vertical filter */ |
| { |
| const __m128i coeffs_y = |
| _mm_add_epi16(_mm_loadu_si128((__m128i *)filter_y), offset); |
| |
| // 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 + conv_params->round_1 - 1))); |
| |
| for (i = 0; i < h; ++i) { |
| for (j = 0; j < w; j += 8) { |
| // Filter even-index pixels |
| const uint16_t *data = &temp[i * MAX_SB_SIZE + j]; |
| const __m128i src_0 = |
| _mm_unpacklo_epi16(*(__m128i *)(data + 0 * MAX_SB_SIZE), |
| *(__m128i *)(data + 1 * MAX_SB_SIZE)); |
| const __m128i src_2 = |
| _mm_unpacklo_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE), |
| *(__m128i *)(data + 3 * MAX_SB_SIZE)); |
| const __m128i src_4 = |
| _mm_unpacklo_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE), |
| *(__m128i *)(data + 5 * MAX_SB_SIZE)); |
| const __m128i src_6 = |
| _mm_unpacklo_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE), |
| *(__m128i *)(data + 7 * MAX_SB_SIZE)); |
| |
| 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 * MAX_SB_SIZE), |
| *(__m128i *)(data + 1 * MAX_SB_SIZE)); |
| const __m128i src_3 = |
| _mm_unpackhi_epi16(*(__m128i *)(data + 2 * MAX_SB_SIZE), |
| *(__m128i *)(data + 3 * MAX_SB_SIZE)); |
| const __m128i src_5 = |
| _mm_unpackhi_epi16(*(__m128i *)(data + 4 * MAX_SB_SIZE), |
| *(__m128i *)(data + 5 * MAX_SB_SIZE)); |
| const __m128i src_7 = |
| _mm_unpackhi_epi16(*(__m128i *)(data + 6 * MAX_SB_SIZE), |
| *(__m128i *)(data + 7 * MAX_SB_SIZE)); |
| |
| 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_srai_epi32( |
| _mm_add_epi32(res_lo, round_const), conv_params->round_1); |
| const __m128i res_hi_round = _mm_srai_epi32( |
| _mm_add_epi32(res_hi, round_const), conv_params->round_1); |
| |
| const __m128i res_16bit = _mm_packs_epi32(res_lo_round, res_hi_round); |
| __m128i res_8bit = _mm_packus_epi16(res_16bit, res_16bit); |
| |
| __m128i *const p = (__m128i *)&dst[i * dst_stride + j]; |
| _mm_storel_epi64(p, res_8bit); |
| } |
| } |
| } |
| } |
