| /* |
| * 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 <emmintrin.h> |
| |
| #include "aom/aom_integer.h" |
| |
| static INLINE void load_b_values(const int16_t *zbin_ptr, __m128i *zbin, |
| const int16_t *round_ptr, __m128i *round, |
| const int16_t *quant_ptr, __m128i *quant, |
| const int16_t *dequant_ptr, __m128i *dequant, |
| const int16_t *shift_ptr, __m128i *shift) { |
| *zbin = _mm_load_si128((const __m128i *)zbin_ptr); |
| *round = _mm_load_si128((const __m128i *)round_ptr); |
| *quant = _mm_load_si128((const __m128i *)quant_ptr); |
| *zbin = _mm_sub_epi16(*zbin, _mm_set1_epi16(1)); |
| *dequant = _mm_load_si128((const __m128i *)dequant_ptr); |
| *shift = _mm_load_si128((const __m128i *)shift_ptr); |
| } |
| |
| // With ssse3 and later abs() and sign() are preferred. |
| static INLINE __m128i invert_sign_sse2(__m128i a, __m128i sign) { |
| a = _mm_xor_si128(a, sign); |
| return _mm_sub_epi16(a, sign); |
| } |
| |
| static INLINE __m128i invert_sign_32_sse2(__m128i a, __m128i sign) { |
| a = _mm_xor_si128(a, sign); |
| return _mm_sub_epi32(a, sign); |
| } |
| |
| static INLINE void calculate_qcoeff(__m128i *coeff, const __m128i round, |
| const __m128i quant, const __m128i shift) { |
| __m128i tmp, qcoeff; |
| qcoeff = _mm_adds_epi16(*coeff, round); |
| tmp = _mm_mulhi_epi16(qcoeff, quant); |
| qcoeff = _mm_add_epi16(tmp, qcoeff); |
| *coeff = _mm_mulhi_epi16(qcoeff, shift); |
| } |
| |
| static INLINE void calculate_qcoeff_log_scale(__m128i *coeff, |
| const __m128i round, |
| const __m128i quant, |
| const __m128i *shift, |
| const int *log_scale) { |
| __m128i tmp, tmp1, qcoeff; |
| qcoeff = _mm_adds_epi16(*coeff, round); |
| tmp = _mm_mulhi_epi16(qcoeff, quant); |
| qcoeff = _mm_add_epi16(tmp, qcoeff); |
| tmp = _mm_mullo_epi16(qcoeff, *shift); |
| tmp = _mm_srli_epi16(tmp, (16 - *log_scale)); |
| tmp1 = _mm_mulhi_epi16(qcoeff, *shift); |
| tmp1 = _mm_slli_epi16(tmp1, *log_scale); |
| *coeff = _mm_or_si128(tmp, tmp1); |
| } |
| |
| static INLINE __m128i calculate_dqcoeff(__m128i qcoeff, __m128i dequant) { |
| return _mm_mullo_epi16(qcoeff, dequant); |
| } |
| |
| static INLINE void calculate_dqcoeff_and_store_log_scale(__m128i qcoeff, |
| __m128i dequant, |
| const __m128i zero, |
| tran_low_t *dqcoeff, |
| const int *log_scale) { |
| // calculate abs |
| __m128i coeff_sign = _mm_srai_epi16(qcoeff, 15); |
| __m128i coeff = invert_sign_sse2(qcoeff, coeff_sign); |
| |
| const __m128i sign_0 = _mm_unpacklo_epi16(coeff_sign, zero); |
| const __m128i sign_1 = _mm_unpackhi_epi16(coeff_sign, zero); |
| |
| const __m128i low = _mm_mullo_epi16(coeff, dequant); |
| const __m128i high = _mm_mulhi_epi16(coeff, dequant); |
| __m128i dqcoeff32_0 = _mm_unpacklo_epi16(low, high); |
| __m128i dqcoeff32_1 = _mm_unpackhi_epi16(low, high); |
| |
| dqcoeff32_0 = _mm_srli_epi32(dqcoeff32_0, *log_scale); |
| dqcoeff32_1 = _mm_srli_epi32(dqcoeff32_1, *log_scale); |
| |
| dqcoeff32_0 = invert_sign_32_sse2(dqcoeff32_0, sign_0); |
| dqcoeff32_1 = invert_sign_32_sse2(dqcoeff32_1, sign_1); |
| |
| _mm_store_si128((__m128i *)(dqcoeff), dqcoeff32_0); |
| _mm_store_si128((__m128i *)(dqcoeff + 4), dqcoeff32_1); |
| } |
| |
| // Scan 16 values for eob reference in scan_ptr. Use masks (-1) from comparing |
| // to zbin to add 1 to the index in 'scan'. |
| static INLINE __m128i scan_for_eob(__m128i *coeff0, __m128i *coeff1, |
| const __m128i zbin_mask0, |
| const __m128i zbin_mask1, |
| const int16_t *scan_ptr, const int index, |
| const __m128i zero) { |
| const __m128i zero_coeff0 = _mm_cmpeq_epi16(*coeff0, zero); |
| const __m128i zero_coeff1 = _mm_cmpeq_epi16(*coeff1, zero); |
| __m128i scan0 = _mm_load_si128((const __m128i *)(scan_ptr + index)); |
| __m128i scan1 = _mm_load_si128((const __m128i *)(scan_ptr + index + 8)); |
| __m128i eob0, eob1; |
| // Add one to convert from indices to counts |
| scan0 = _mm_sub_epi16(scan0, zbin_mask0); |
| scan1 = _mm_sub_epi16(scan1, zbin_mask1); |
| eob0 = _mm_andnot_si128(zero_coeff0, scan0); |
| eob1 = _mm_andnot_si128(zero_coeff1, scan1); |
| return _mm_max_epi16(eob0, eob1); |
| } |
| |
| static INLINE int16_t accumulate_eob(__m128i eob) { |
| __m128i eob_shuffled; |
| eob_shuffled = _mm_shuffle_epi32(eob, 0xe); |
| eob = _mm_max_epi16(eob, eob_shuffled); |
| eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); |
| eob = _mm_max_epi16(eob, eob_shuffled); |
| eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); |
| eob = _mm_max_epi16(eob, eob_shuffled); |
| return _mm_extract_epi16(eob, 1); |
| } |
| |
| static INLINE __m128i load_coefficients(const tran_low_t *coeff_ptr) { |
| assert(sizeof(tran_low_t) == 4); |
| const __m128i coeff1 = _mm_load_si128((__m128i *)(coeff_ptr)); |
| const __m128i coeff2 = _mm_load_si128((__m128i *)(coeff_ptr + 4)); |
| return _mm_packs_epi32(coeff1, coeff2); |
| } |
| |
| static INLINE void store_coefficients(__m128i coeff_vals, |
| tran_low_t *coeff_ptr) { |
| assert(sizeof(tran_low_t) == 4); |
| |
| __m128i one = _mm_set1_epi16(1); |
| __m128i coeff_vals_hi = _mm_mulhi_epi16(coeff_vals, one); |
| __m128i coeff_vals_lo = _mm_mullo_epi16(coeff_vals, one); |
| __m128i coeff_vals_1 = _mm_unpacklo_epi16(coeff_vals_lo, coeff_vals_hi); |
| __m128i coeff_vals_2 = _mm_unpackhi_epi16(coeff_vals_lo, coeff_vals_hi); |
| _mm_store_si128((__m128i *)(coeff_ptr), coeff_vals_1); |
| _mm_store_si128((__m128i *)(coeff_ptr + 4), coeff_vals_2); |
| } |
| |
| static INLINE void update_mask1(__m128i *cmp_mask0, __m128i *cmp_mask1, |
| const int16_t *iscan_ptr, int *is_found, |
| __m128i *mask) { |
| __m128i all_zero; |
| __m128i temp_mask = _mm_setzero_si128(); |
| all_zero = _mm_or_si128(*cmp_mask0, *cmp_mask1); |
| if (_mm_movemask_epi8(all_zero)) { |
| __m128i iscan0 = _mm_load_si128((const __m128i *)(iscan_ptr)); |
| __m128i mask0 = _mm_and_si128(*cmp_mask0, iscan0); |
| __m128i iscan1 = _mm_load_si128((const __m128i *)(iscan_ptr + 8)); |
| __m128i mask1 = _mm_and_si128(*cmp_mask1, iscan1); |
| temp_mask = _mm_max_epi16(mask0, mask1); |
| *is_found = 1; |
| } |
| *mask = _mm_max_epi16(temp_mask, *mask); |
| } |
| |
| static INLINE void update_mask0(__m128i *qcoeff0, __m128i *qcoeff1, |
| __m128i *threshold, const int16_t *iscan_ptr, |
| int *is_found, __m128i *mask) { |
| __m128i zero = _mm_setzero_si128(); |
| __m128i coeff[4], cmp_mask0, cmp_mask1, cmp_mask2, cmp_mask3; |
| |
| coeff[0] = _mm_unpacklo_epi16(*qcoeff0, zero); |
| coeff[1] = _mm_unpackhi_epi16(*qcoeff0, zero); |
| coeff[2] = _mm_unpacklo_epi16(*qcoeff1, zero); |
| coeff[3] = _mm_unpackhi_epi16(*qcoeff1, zero); |
| |
| coeff[0] = _mm_slli_epi32(coeff[0], AOM_QM_BITS); |
| cmp_mask0 = _mm_cmpgt_epi32(coeff[0], threshold[0]); |
| coeff[1] = _mm_slli_epi32(coeff[1], AOM_QM_BITS); |
| cmp_mask1 = _mm_cmpgt_epi32(coeff[1], threshold[1]); |
| coeff[2] = _mm_slli_epi32(coeff[2], AOM_QM_BITS); |
| cmp_mask2 = _mm_cmpgt_epi32(coeff[2], threshold[1]); |
| coeff[3] = _mm_slli_epi32(coeff[3], AOM_QM_BITS); |
| cmp_mask3 = _mm_cmpgt_epi32(coeff[3], threshold[1]); |
| |
| cmp_mask0 = _mm_packs_epi32(cmp_mask0, cmp_mask1); |
| cmp_mask1 = _mm_packs_epi32(cmp_mask2, cmp_mask3); |
| |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan_ptr, is_found, mask); |
| } |
| |
| static INLINE int calculate_non_zero_count(__m128i mask) { |
| __m128i mask0, mask1; |
| int non_zero_count = 0; |
| mask0 = _mm_unpackhi_epi64(mask, mask); |
| mask1 = _mm_max_epi16(mask0, mask); |
| mask0 = _mm_shuffle_epi32(mask1, 1); |
| mask0 = _mm_max_epi16(mask0, mask1); |
| mask1 = _mm_srli_epi32(mask0, 16); |
| mask0 = _mm_max_epi16(mask0, mask1); |
| non_zero_count = _mm_extract_epi16(mask0, 0) + 1; |
| |
| return non_zero_count; |
| } |
