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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/aom_dsp/x86/synonyms.h | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/synonyms.h b/third_party/aom/aom_dsp/x86/synonyms.h new file mode 100644 index 0000000000..6744ec51d0 --- /dev/null +++ b/third_party/aom/aom_dsp/x86/synonyms.h @@ -0,0 +1,134 @@ +/* + * 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. + */ + +#ifndef AOM_AOM_DSP_X86_SYNONYMS_H_ +#define AOM_AOM_DSP_X86_SYNONYMS_H_ + +#include <immintrin.h> +#include <string.h> + +#include "config/aom_config.h" + +#include "aom/aom_integer.h" + +/** + * Various reusable shorthands for x86 SIMD intrinsics. + * + * Intrinsics prefixed with xx_ operate on or return 128bit XMM registers. + * Intrinsics prefixed with yy_ operate on or return 256bit YMM registers. + */ + +// Loads and stores to do away with the tedium of casting the address +// to the right type. +static INLINE __m128i xx_loadl_32(const void *a) { + int val; + memcpy(&val, a, sizeof(val)); + return _mm_cvtsi32_si128(val); +} + +static INLINE __m128i xx_loadl_64(const void *a) { + return _mm_loadl_epi64((const __m128i *)a); +} + +static INLINE __m128i xx_load_128(const void *a) { + return _mm_load_si128((const __m128i *)a); +} + +static INLINE __m128i xx_loadu_128(const void *a) { + return _mm_loadu_si128((const __m128i *)a); +} + +static INLINE void xx_storel_32(void *const a, const __m128i v) { + const int val = _mm_cvtsi128_si32(v); + memcpy(a, &val, sizeof(val)); +} + +static INLINE void xx_storel_64(void *const a, const __m128i v) { + _mm_storel_epi64((__m128i *)a, v); +} + +static INLINE void xx_store_128(void *const a, const __m128i v) { + _mm_store_si128((__m128i *)a, v); +} + +static INLINE void xx_storeu_128(void *const a, const __m128i v) { + _mm_storeu_si128((__m128i *)a, v); +} + +// The _mm_set_epi64x() intrinsic is undefined for some Visual Studio +// compilers. The following function is equivalent to _mm_set_epi64x() +// acting on 32-bit integers. +static INLINE __m128i xx_set_64_from_32i(int32_t e1, int32_t e0) { +#if defined(_MSC_VER) && _MSC_VER < 1900 + return _mm_set_epi32(0, e1, 0, e0); +#else + return _mm_set_epi64x((uint32_t)e1, (uint32_t)e0); +#endif +} + +// The _mm_set1_epi64x() intrinsic is undefined for some Visual Studio +// compilers. The following function is equivalent to _mm_set1_epi64x() +// acting on a 32-bit integer. +static INLINE __m128i xx_set1_64_from_32i(int32_t a) { +#if defined(_MSC_VER) && _MSC_VER < 1900 + return _mm_set_epi32(0, a, 0, a); +#else + return _mm_set1_epi64x((uint32_t)a); +#endif +} + +// Fill an SSE register using an interleaved pair of values, ie. set the +// 8 channels to {a, b, a, b, a, b, a, b}, using the same channel ordering +// as when a register is stored to / loaded from memory. +// +// This is useful for rearranging filter kernels for use with the _mm_madd_epi16 +// instruction +static INLINE __m128i xx_set2_epi16(int16_t a, int16_t b) { + return _mm_setr_epi16(a, b, a, b, a, b, a, b); +} + +static INLINE __m128i xx_round_epu16(__m128i v_val_w) { + return _mm_avg_epu16(v_val_w, _mm_setzero_si128()); +} + +static INLINE __m128i xx_roundn_epu16(__m128i v_val_w, int bits) { + const __m128i v_s_w = _mm_srli_epi16(v_val_w, bits - 1); + return _mm_avg_epu16(v_s_w, _mm_setzero_si128()); +} + +static INLINE __m128i xx_roundn_epu32(__m128i v_val_d, int bits) { + const __m128i v_bias_d = _mm_set1_epi32((1 << bits) >> 1); + const __m128i v_tmp_d = _mm_add_epi32(v_val_d, v_bias_d); + return _mm_srli_epi32(v_tmp_d, bits); +} + +static INLINE __m128i xx_roundn_epi16_unsigned(__m128i v_val_d, int bits) { + const __m128i v_bias_d = _mm_set1_epi16((1 << bits) >> 1); + const __m128i v_tmp_d = _mm_add_epi16(v_val_d, v_bias_d); + return _mm_srai_epi16(v_tmp_d, bits); +} + +// This is equivalent to ROUND_POWER_OF_TWO(v_val_d, bits) +static INLINE __m128i xx_roundn_epi32_unsigned(__m128i v_val_d, int bits) { + const __m128i v_bias_d = _mm_set1_epi32((1 << bits) >> 1); + const __m128i v_tmp_d = _mm_add_epi32(v_val_d, v_bias_d); + return _mm_srai_epi32(v_tmp_d, bits); +} + +static INLINE __m128i xx_roundn_epi16(__m128i v_val_d, int bits) { + const __m128i v_bias_d = _mm_set1_epi16((1 << bits) >> 1); + const __m128i v_sign_d = _mm_srai_epi16(v_val_d, 15); + const __m128i v_tmp_d = + _mm_add_epi16(_mm_add_epi16(v_val_d, v_bias_d), v_sign_d); + return _mm_srai_epi16(v_tmp_d, bits); +} + +#endif // AOM_AOM_DSP_X86_SYNONYMS_H_ |