52 lines
1.9 KiB
C
52 lines
1.9 KiB
C
/*
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* Copyright (c) 2017 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VPX_VPX_DSP_X86_QUANTIZE_SSSE3_H_
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#define VPX_VPX_DSP_X86_QUANTIZE_SSSE3_H_
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#include <emmintrin.h>
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#include "./vpx_config.h"
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#include "vpx/vpx_integer.h"
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#include "vpx_dsp/x86/quantize_sse2.h"
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static INLINE void calculate_dqcoeff_and_store_32x32(const __m128i qcoeff,
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const __m128i dequant,
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const __m128i zero,
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tran_low_t *dqcoeff) {
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// Un-sign to bias rounding like C.
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const __m128i coeff = _mm_abs_epi16(qcoeff);
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const __m128i sign_0 = _mm_unpacklo_epi16(zero, qcoeff);
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const __m128i sign_1 = _mm_unpackhi_epi16(zero, qcoeff);
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const __m128i low = _mm_mullo_epi16(coeff, dequant);
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const __m128i high = _mm_mulhi_epi16(coeff, dequant);
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__m128i dqcoeff32_0 = _mm_unpacklo_epi16(low, high);
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__m128i dqcoeff32_1 = _mm_unpackhi_epi16(low, high);
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// "Divide" by 2.
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dqcoeff32_0 = _mm_srli_epi32(dqcoeff32_0, 1);
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dqcoeff32_1 = _mm_srli_epi32(dqcoeff32_1, 1);
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dqcoeff32_0 = _mm_sign_epi32(dqcoeff32_0, sign_0);
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dqcoeff32_1 = _mm_sign_epi32(dqcoeff32_1, sign_1);
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#if CONFIG_VP9_HIGHBITDEPTH
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_mm_store_si128((__m128i *)(dqcoeff), dqcoeff32_0);
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_mm_store_si128((__m128i *)(dqcoeff + 4), dqcoeff32_1);
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#else
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_mm_store_si128((__m128i *)(dqcoeff),
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_mm_packs_epi32(dqcoeff32_0, dqcoeff32_1));
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#endif // CONFIG_VP9_HIGHBITDEPTH
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}
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#endif // VPX_VPX_DSP_X86_QUANTIZE_SSSE3_H_
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