| /* |
| * Copyright (c) 2017 The WebM project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #include <emmintrin.h> |
| |
| #include "./vpx_config.h" |
| #include "vpx/vpx_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 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 __m128i calculate_dqcoeff(__m128i qcoeff, __m128i dequant) { |
| return _mm_mullo_epi16(qcoeff, dequant); |
| } |
| |
| // 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); |
| } |