259 lines
9.8 KiB
C
259 lines
9.8 KiB
C
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/*
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* Copyright (c) 2022 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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#include <immintrin.h>
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#include "./vpx_dsp_rtcd.h"
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static VPX_FORCE_INLINE void init_one_qp(const __m128i *p, __m256i *qp) {
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const __m128i sign = _mm_srai_epi16(*p, 15);
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const __m128i dc = _mm_unpacklo_epi16(*p, sign);
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const __m128i ac = _mm_unpackhi_epi16(*p, sign);
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*qp = _mm256_insertf128_si256(_mm256_castsi128_si256(dc), ac, 1);
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}
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static VPX_FORCE_INLINE void update_qp(__m256i *qp) {
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int i;
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for (i = 0; i < 5; ++i) {
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qp[i] = _mm256_permute2x128_si256(qp[i], qp[i], 0x11);
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}
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}
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static VPX_FORCE_INLINE void init_qp(const int16_t *zbin_ptr,
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const int16_t *round_ptr,
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const int16_t *quant_ptr,
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const int16_t *dequant_ptr,
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const int16_t *quant_shift_ptr,
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__m256i *qp, int log_scale) {
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const __m128i zbin = _mm_loadu_si128((const __m128i *)zbin_ptr);
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const __m128i round = _mm_loadu_si128((const __m128i *)round_ptr);
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const __m128i quant = _mm_loadu_si128((const __m128i *)quant_ptr);
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const __m128i dequant = _mm_loadu_si128((const __m128i *)dequant_ptr);
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const __m128i quant_shift = _mm_loadu_si128((const __m128i *)quant_shift_ptr);
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init_one_qp(&zbin, &qp[0]);
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init_one_qp(&round, &qp[1]);
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init_one_qp(&quant, &qp[2]);
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init_one_qp(&dequant, &qp[3]);
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init_one_qp(&quant_shift, &qp[4]);
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if (log_scale > 0) {
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const __m256i rnd = _mm256_set1_epi32((int16_t)(1 << (log_scale - 1)));
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qp[0] = _mm256_add_epi32(qp[0], rnd);
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qp[0] = _mm256_srai_epi32(qp[0], log_scale);
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qp[1] = _mm256_add_epi32(qp[1], rnd);
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qp[1] = _mm256_srai_epi32(qp[1], log_scale);
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}
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// Subtracting 1 here eliminates a _mm256_cmpeq_epi32() instruction when
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// calculating the zbin mask.
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qp[0] = _mm256_sub_epi32(qp[0], _mm256_set1_epi32(1));
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}
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// Note:
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// *x is vector multiplied by *y which is 16 int32_t parallel multiplication
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// and right shift 16. The output, 16 int32_t is save in *p.
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static VPX_FORCE_INLINE __m256i mm256_mul_shift_epi32(const __m256i *x,
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const __m256i *y) {
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__m256i prod_lo = _mm256_mul_epi32(*x, *y);
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__m256i prod_hi = _mm256_srli_epi64(*x, 32);
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const __m256i mult_hi = _mm256_srli_epi64(*y, 32);
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const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1);
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prod_hi = _mm256_mul_epi32(prod_hi, mult_hi);
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prod_lo = _mm256_srli_epi64(prod_lo, 16);
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prod_lo = _mm256_and_si256(prod_lo, mask);
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prod_hi = _mm256_srli_epi64(prod_hi, 16);
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prod_hi = _mm256_slli_epi64(prod_hi, 32);
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return _mm256_or_si256(prod_lo, prod_hi);
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}
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static VPX_FORCE_INLINE __m256i get_max_lane_eob(const int16_t *iscan_ptr,
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__m256i eobmax,
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__m256i nz_mask) {
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const __m256i packed_nz_mask = _mm256_packs_epi32(nz_mask, nz_mask);
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const __m256i packed_nz_mask_perm =
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_mm256_permute4x64_epi64(packed_nz_mask, 0xD8);
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const __m256i iscan =
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_mm256_castsi128_si256(_mm_loadu_si128((const __m128i *)iscan_ptr));
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const __m256i nz_iscan = _mm256_and_si256(iscan, packed_nz_mask_perm);
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return _mm256_max_epi16(eobmax, nz_iscan);
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}
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// Get the max eob from the lower 128 bits.
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static VPX_FORCE_INLINE uint16_t get_max_eob(__m256i eob) {
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__m256i eob_s;
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eob_s = _mm256_shuffle_epi32(eob, 0xe);
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eob = _mm256_max_epi16(eob, eob_s);
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eob_s = _mm256_shufflelo_epi16(eob, 0xe);
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eob = _mm256_max_epi16(eob, eob_s);
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eob_s = _mm256_shufflelo_epi16(eob, 1);
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eob = _mm256_max_epi16(eob, eob_s);
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#if defined(_MSC_VER) && (_MSC_VER < 1910)
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return _mm_cvtsi128_si32(_mm256_extracti128_si256(eob, 0)) & 0xffff;
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#else
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return (uint16_t)_mm256_extract_epi16(eob, 0);
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#endif
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}
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static VPX_FORCE_INLINE void quantize(const __m256i *qp,
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const tran_low_t *coeff_ptr,
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const int16_t *iscan_ptr,
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tran_low_t *qcoeff, tran_low_t *dqcoeff,
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__m256i *eob) {
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const __m256i coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr);
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const __m256i abs_coeff = _mm256_abs_epi32(coeff);
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const __m256i zbin_mask = _mm256_cmpgt_epi32(abs_coeff, qp[0]);
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if (_mm256_movemask_epi8(zbin_mask) == 0) {
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const __m256i zero = _mm256_setzero_si256();
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_mm256_storeu_si256((__m256i *)qcoeff, zero);
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_mm256_storeu_si256((__m256i *)dqcoeff, zero);
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return;
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}
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{
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const __m256i tmp_rnd =
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_mm256_and_si256(_mm256_add_epi32(abs_coeff, qp[1]), zbin_mask);
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const __m256i tmp = mm256_mul_shift_epi32(&tmp_rnd, &qp[2]);
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const __m256i tmp2 = _mm256_add_epi32(tmp, tmp_rnd);
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const __m256i abs_q = mm256_mul_shift_epi32(&tmp2, &qp[4]);
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const __m256i abs_dq = _mm256_mullo_epi32(abs_q, qp[3]);
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const __m256i nz_mask = _mm256_cmpgt_epi32(abs_q, _mm256_setzero_si256());
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const __m256i q = _mm256_sign_epi32(abs_q, coeff);
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const __m256i dq = _mm256_sign_epi32(abs_dq, coeff);
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_mm256_storeu_si256((__m256i *)qcoeff, q);
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_mm256_storeu_si256((__m256i *)dqcoeff, dq);
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*eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask);
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}
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}
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void vpx_highbd_quantize_b_avx2(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
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const int16_t *zbin_ptr,
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const int16_t *round_ptr,
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const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr,
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tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
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const int16_t *dequant_ptr, uint16_t *eob_ptr,
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const int16_t *scan, const int16_t *iscan) {
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const int step = 8;
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__m256i eob = _mm256_setzero_si256();
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__m256i qp[5];
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(void)scan;
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init_qp(zbin_ptr, round_ptr, quant_ptr, dequant_ptr, quant_shift_ptr, qp, 0);
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quantize(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
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coeff_ptr += step;
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qcoeff_ptr += step;
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dqcoeff_ptr += step;
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iscan += step;
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n_coeffs -= step;
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update_qp(qp);
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while (n_coeffs > 0) {
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quantize(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
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coeff_ptr += step;
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qcoeff_ptr += step;
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dqcoeff_ptr += step;
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iscan += step;
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n_coeffs -= step;
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}
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*eob_ptr = get_max_eob(eob);
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}
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static VPX_FORCE_INLINE __m256i mm256_mul_shift_epi32_logscale(const __m256i *x,
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const __m256i *y,
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int log_scale) {
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__m256i prod_lo = _mm256_mul_epi32(*x, *y);
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__m256i prod_hi = _mm256_srli_epi64(*x, 32);
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const __m256i mult_hi = _mm256_srli_epi64(*y, 32);
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const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1);
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prod_hi = _mm256_mul_epi32(prod_hi, mult_hi);
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prod_lo = _mm256_srli_epi64(prod_lo, 16 - log_scale);
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prod_lo = _mm256_and_si256(prod_lo, mask);
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prod_hi = _mm256_srli_epi64(prod_hi, 16 - log_scale);
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prod_hi = _mm256_slli_epi64(prod_hi, 32);
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return _mm256_or_si256(prod_lo, prod_hi);
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}
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static VPX_FORCE_INLINE void quantize_b_32x32(
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const __m256i *qp, const tran_low_t *coeff_ptr, const int16_t *iscan_ptr,
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tran_low_t *qcoeff, tran_low_t *dqcoeff, __m256i *eob) {
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const __m256i coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr);
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const __m256i abs_coeff = _mm256_abs_epi32(coeff);
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const __m256i zbin_mask = _mm256_cmpgt_epi32(abs_coeff, qp[0]);
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if (_mm256_movemask_epi8(zbin_mask) == 0) {
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const __m256i zero = _mm256_setzero_si256();
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_mm256_storeu_si256((__m256i *)qcoeff, zero);
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_mm256_storeu_si256((__m256i *)dqcoeff, zero);
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return;
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}
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{
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const __m256i tmp_rnd =
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_mm256_and_si256(_mm256_add_epi32(abs_coeff, qp[1]), zbin_mask);
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// const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw;
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const __m256i tmp = mm256_mul_shift_epi32_logscale(&tmp_rnd, &qp[2], 0);
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const __m256i tmp2 = _mm256_add_epi32(tmp, tmp_rnd);
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// const int abs_qcoeff = (int)((tmp2 * quant_shift_ptr[rc != 0]) >> 15);
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const __m256i abs_q = mm256_mul_shift_epi32_logscale(&tmp2, &qp[4], 1);
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const __m256i abs_dq =
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_mm256_srli_epi32(_mm256_mullo_epi32(abs_q, qp[3]), 1);
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const __m256i nz_mask = _mm256_cmpgt_epi32(abs_q, _mm256_setzero_si256());
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const __m256i q = _mm256_sign_epi32(abs_q, coeff);
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const __m256i dq = _mm256_sign_epi32(abs_dq, coeff);
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_mm256_storeu_si256((__m256i *)qcoeff, q);
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_mm256_storeu_si256((__m256i *)dqcoeff, dq);
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*eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask);
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}
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}
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void vpx_highbd_quantize_b_32x32_avx2(
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const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int16_t *zbin_ptr,
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const int16_t *round_ptr, const int16_t *quant_ptr,
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const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr,
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tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, uint16_t *eob_ptr,
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const int16_t *scan, const int16_t *iscan) {
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const unsigned int step = 8;
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__m256i eob = _mm256_setzero_si256();
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__m256i qp[5];
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(void)scan;
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init_qp(zbin_ptr, round_ptr, quant_ptr, dequant_ptr, quant_shift_ptr, qp, 1);
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quantize_b_32x32(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
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coeff_ptr += step;
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qcoeff_ptr += step;
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dqcoeff_ptr += step;
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iscan += step;
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n_coeffs -= step;
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update_qp(qp);
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while (n_coeffs > 0) {
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quantize_b_32x32(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
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coeff_ptr += step;
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qcoeff_ptr += step;
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dqcoeff_ptr += step;
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iscan += step;
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n_coeffs -= step;
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}
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*eob_ptr = get_max_eob(eob);
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}
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