ref: 7877b911a425ad7e1c829d86eeac0c334f19de39
dir: /vpx_dsp/x86/quantize_sse2.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_SSE2_H_ #define VPX_VPX_DSP_X86_QUANTIZE_SSE2_H_ #include <emmintrin.h> #include "./vpx_config.h" #include "vpx/vpx_integer.h" static INLINE void load_b_values(const int16_t *zbin_ptr, __m128i *zbin, const int16_t *round_ptr, __m128i *round, const int16_t *quant_ptr, __m128i *quant, const int16_t *dequant_ptr, __m128i *dequant, const int16_t *shift_ptr, __m128i *shift) { *zbin = _mm_load_si128((const __m128i *)zbin_ptr); *round = _mm_load_si128((const __m128i *)round_ptr); *quant = _mm_load_si128((const __m128i *)quant_ptr); *zbin = _mm_sub_epi16(*zbin, _mm_set1_epi16(1)); *dequant = _mm_load_si128((const __m128i *)dequant_ptr); *shift = _mm_load_si128((const __m128i *)shift_ptr); } // With ssse3 and later abs() and sign() are preferred. static INLINE __m128i invert_sign_sse2(__m128i a, __m128i sign) { a = _mm_xor_si128(a, sign); return _mm_sub_epi16(a, sign); } static INLINE void calculate_qcoeff(__m128i *coeff, const __m128i round, const __m128i quant, const __m128i shift) { __m128i tmp, qcoeff; qcoeff = _mm_adds_epi16(*coeff, round); tmp = _mm_mulhi_epi16(qcoeff, quant); qcoeff = _mm_add_epi16(tmp, qcoeff); *coeff = _mm_mulhi_epi16(qcoeff, shift); } static INLINE void calculate_dqcoeff_and_store(__m128i qcoeff, __m128i dequant, tran_low_t *dqcoeff) { #if CONFIG_VP9_HIGHBITDEPTH const __m128i low = _mm_mullo_epi16(qcoeff, dequant); const __m128i high = _mm_mulhi_epi16(qcoeff, dequant); const __m128i dqcoeff32_0 = _mm_unpacklo_epi16(low, high); const __m128i dqcoeff32_1 = _mm_unpackhi_epi16(low, high); _mm_store_si128((__m128i *)(dqcoeff), dqcoeff32_0); _mm_store_si128((__m128i *)(dqcoeff + 4), dqcoeff32_1); #else const __m128i dqcoeff16 = _mm_mullo_epi16(qcoeff, dequant); _mm_store_si128((__m128i *)(dqcoeff), dqcoeff16); #endif // CONFIG_VP9_HIGHBITDEPTH } // Scan 16 values for eob reference in scan. Use masks (-1) from comparing to // zbin to add 1 to the index in 'scan'. static INLINE __m128i scan_for_eob(__m128i *coeff0, __m128i *coeff1, const __m128i zbin_mask0, const __m128i zbin_mask1, const int16_t *scan, const int index, const __m128i zero) { const __m128i zero_coeff0 = _mm_cmpeq_epi16(*coeff0, zero); const __m128i zero_coeff1 = _mm_cmpeq_epi16(*coeff1, zero); __m128i scan0 = _mm_load_si128((const __m128i *)(scan + index)); __m128i scan1 = _mm_load_si128((const __m128i *)(scan + index + 8)); __m128i eob0, eob1; // Add one to convert from indices to counts scan0 = _mm_sub_epi16(scan0, zbin_mask0); scan1 = _mm_sub_epi16(scan1, zbin_mask1); eob0 = _mm_andnot_si128(zero_coeff0, scan0); eob1 = _mm_andnot_si128(zero_coeff1, scan1); return _mm_max_epi16(eob0, eob1); } static INLINE int16_t accumulate_eob(__m128i eob) { __m128i eob_shuffled; eob_shuffled = _mm_shuffle_epi32(eob, 0xe); eob = _mm_max_epi16(eob, eob_shuffled); eob_shuffled = _mm_shufflelo_epi16(eob, 0xe); eob = _mm_max_epi16(eob, eob_shuffled); eob_shuffled = _mm_shufflelo_epi16(eob, 0x1); eob = _mm_max_epi16(eob, eob_shuffled); return _mm_extract_epi16(eob, 1); } #endif // VPX_VPX_DSP_X86_QUANTIZE_SSE2_H_