| /* |
| * 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 <xmmintrin.h> |
| |
| #include "config/aom_config.h" |
| #include "aom/aom_integer.h" |
| #include "aom_dsp/aom_dsp_common.h" |
| |
| // Load 8 16 bit values. If the source is 32 bits then pack down with |
| // saturation. |
| static inline __m128i load_tran_low(const tran_low_t *a) { |
| const __m128i a_low = _mm_load_si128((const __m128i *)a); |
| return _mm_packs_epi32(a_low, *(const __m128i *)(a + 4)); |
| } |
| |
| static inline void unpack_trans(__m128i a, __m128i *a_1, __m128i *a_2) { |
| const __m128i one = _mm_set1_epi16(1); |
| const __m128i a_hi = _mm_mulhi_epi16(a, one); |
| const __m128i a_lo = _mm_mullo_epi16(a, one); |
| *a_1 = _mm_unpacklo_epi16(a_lo, a_hi); |
| *a_2 = _mm_unpackhi_epi16(a_lo, a_hi); |
| } |
| |
| // Store 8 16 bit values. If the destination is 32 bits then sign extend the |
| // values by multiplying by 1. |
| static inline void store_tran_low(__m128i a, tran_low_t *b) { |
| __m128i a_1, a_2; |
| unpack_trans(a, &a_1, &a_2); |
| _mm_store_si128((__m128i *)(b), a_1); |
| _mm_store_si128((__m128i *)(b + 4), a_2); |
| } |
| // Stores the second result at an offset of 8 (instead of 4) to match the output |
| // with that of AVX2 implementation and the function is similar to |
| // store_tran_low(). |
| static inline void store_tran_low_offset_4(__m128i a, tran_low_t *b) { |
| __m128i a_1, a_2; |
| unpack_trans(a, &a_1, &a_2); |
| _mm_store_si128((__m128i *)(b), a_1); |
| _mm_store_si128((__m128i *)(b + 8), a_2); |
| } |