ref: e9d2f44d12ad22db83ceb09e57c4c6940acbc8f4
dir: /vpx_dsp/x86/quantize_ssse3.h/
/* * 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. */ #ifndef VPX_VPX_DSP_X86_QUANTIZE_SSSE3_H_ #define VPX_VPX_DSP_X86_QUANTIZE_SSSE3_H_ #include <emmintrin.h> #include "./vpx_config.h" #include "vpx/vpx_integer.h" #include "vpx_dsp/x86/quantize_sse2.h" static INLINE void calculate_dqcoeff_and_store_32x32(const __m128i qcoeff, const __m128i dequant, const __m128i zero, tran_low_t *dqcoeff) { // Un-sign to bias rounding like C. const __m128i coeff = _mm_abs_epi16(qcoeff); const __m128i sign_0 = _mm_unpacklo_epi16(zero, qcoeff); const __m128i sign_1 = _mm_unpackhi_epi16(zero, qcoeff); 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); // "Divide" by 2. dqcoeff32_0 = _mm_srli_epi32(dqcoeff32_0, 1); dqcoeff32_1 = _mm_srli_epi32(dqcoeff32_1, 1); dqcoeff32_0 = _mm_sign_epi32(dqcoeff32_0, sign_0); dqcoeff32_1 = _mm_sign_epi32(dqcoeff32_1, sign_1); #if CONFIG_VP9_HIGHBITDEPTH _mm_store_si128((__m128i *)(dqcoeff), dqcoeff32_0); _mm_store_si128((__m128i *)(dqcoeff + 4), dqcoeff32_1); #else _mm_store_si128((__m128i *)(dqcoeff), _mm_packs_epi32(dqcoeff32_0, dqcoeff32_1)); #endif // CONFIG_VP9_HIGHBITDEPTH } #endif // VPX_VPX_DSP_X86_QUANTIZE_SSSE3_H_