ref: ecdb6a00c273b45d38b9079c5bcc6a4d84d9da1a
dir: /vpx_dsp/x86/fdct.h/
/* * Copyright (c) 2016 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. */ #ifndef VPX_DSP_X86_FDCT_H_ #define VPX_DSP_X86_FDCT_H_ #include <xmmintrin.h> #include "./vpx_config.h" #include "vpx/vpx_integer.h" #include "vpx_dsp/vpx_dsp_common.h" // Load 8 16 bit values. If the source is 32 bits then cast down. // This does not saturate values. It only truncates. static INLINE __m128i load_tran_low(const tran_low_t *a) { #if CONFIG_VP9_HIGHBITDEPTH return _mm_setr_epi16((int16_t)a[0], (int16_t)a[1], (int16_t)a[2], (int16_t)a[3], (int16_t)a[4], (int16_t)a[5], (int16_t)a[6], (int16_t)a[7]); #else return _mm_load_si128((const __m128i *)a); #endif } // 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) { #if CONFIG_VP9_HIGHBITDEPTH 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); const __m128i a_1 = _mm_unpacklo_epi16(a_lo, a_hi); const __m128i a_2 = _mm_unpackhi_epi16(a_lo, a_hi); _mm_store_si128((__m128i *)(b), a_1); _mm_store_si128((__m128i *)(b + 4), a_2); #else _mm_store_si128((__m128i *)(b), a); #endif } // Zero fill 8 positions in the output buffer. static INLINE void store_zero_tran_low(tran_low_t *a) { const __m128i zero = _mm_setzero_si128(); #if CONFIG_VP9_HIGHBITDEPTH _mm_store_si128((__m128i *)(a), zero); _mm_store_si128((__m128i *)(a + 4), zero); #else _mm_store_si128((__m128i *)(a), zero); #endif } #endif // VPX_DSP_X86_FDCT_H_