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/*
* Copyright (c) 2017, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <immintrin.h>
#include "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
static INLINE void init_one_qp(const __m128i *p, __m256i *qp) {
const __m128i sign = _mm_srai_epi16(*p, 15);
const __m128i dc = _mm_unpacklo_epi16(*p, sign);
const __m128i ac = _mm_unpackhi_epi16(*p, sign);
*qp = _mm256_insertf128_si256(_mm256_castsi128_si256(dc), ac, 1);
}
static INLINE void update_qp(__m256i *qp) {
int i;
for (i = 0; i < 5; ++i) {
qp[i] = _mm256_permute2x128_si256(qp[i], qp[i], 0x11);
}
}
static INLINE void init_qp(const int16_t *zbin_ptr, const int16_t *round_ptr,
const int16_t *quant_ptr, const int16_t *dequant_ptr,
const int16_t *quant_shift_ptr, __m256i *qp,
int log_scale) {
const __m128i zbin = _mm_loadu_si128((const __m128i *)zbin_ptr);
const __m128i round = _mm_loadu_si128((const __m128i *)round_ptr);
const __m128i quant = _mm_loadu_si128((const __m128i *)quant_ptr);
const __m128i dequant = _mm_loadu_si128((const __m128i *)dequant_ptr);
const __m128i quant_shift = _mm_loadu_si128((const __m128i *)quant_shift_ptr);
init_one_qp(&zbin, &qp[0]);
init_one_qp(&round, &qp[1]);
init_one_qp(&quant, &qp[2]);
init_one_qp(&dequant, &qp[3]);
init_one_qp(&quant_shift, &qp[4]);
if (log_scale > 0) {
const __m256i rnd = _mm256_set1_epi32((int16_t)(1 << (log_scale - 1)));
qp[0] = _mm256_add_epi32(qp[0], rnd);
qp[0] = _mm256_srai_epi32(qp[0], log_scale);
qp[1] = _mm256_add_epi32(qp[1], rnd);
qp[1] = _mm256_srai_epi32(qp[1], log_scale);
}
// Subtracting 1 here eliminates a _mm256_cmpeq_epi32() instruction when
// calculating the zbin mask.
qp[0] = _mm256_sub_epi32(qp[0], _mm256_set1_epi32(1));
}
// Note:
// *x is vector multiplied by *y which is 16 int32_t parallel multiplication
// and right shift 16. The output, 16 int32_t is save in *p.
static INLINE __m256i mm256_mul_shift_epi32(const __m256i *x,
const __m256i *y) {
__m256i prod_lo = _mm256_mul_epi32(*x, *y);
__m256i prod_hi = _mm256_srli_epi64(*x, 32);
const __m256i mult_hi = _mm256_srli_epi64(*y, 32);
prod_hi = _mm256_mul_epi32(prod_hi, mult_hi);
prod_lo = _mm256_srli_epi64(prod_lo, 16);
const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1);
prod_lo = _mm256_and_si256(prod_lo, mask);
prod_hi = _mm256_srli_epi64(prod_hi, 16);
prod_hi = _mm256_slli_epi64(prod_hi, 32);
return _mm256_or_si256(prod_lo, prod_hi);
}
static AOM_FORCE_INLINE __m256i get_max_lane_eob(const int16_t *iscan_ptr,
__m256i eobmax,
__m256i nz_mask) {
const __m256i packed_nz_mask = _mm256_packs_epi32(nz_mask, nz_mask);
const __m256i packed_nz_mask_perm =
_mm256_permute4x64_epi64(packed_nz_mask, 0xD8);
const __m256i iscan =
_mm256_castsi128_si256(_mm_loadu_si128((const __m128i *)iscan_ptr));
const __m256i iscan_plus1 = _mm256_sub_epi16(iscan, packed_nz_mask_perm);
const __m256i nz_iscan = _mm256_and_si256(iscan_plus1, packed_nz_mask_perm);
return _mm256_max_epi16(eobmax, nz_iscan);
}
// Get the max eob from the lower 128 bits.
static AOM_FORCE_INLINE uint16_t get_max_eob(__m256i eob) {
__m256i eob_s;
eob_s = _mm256_shuffle_epi32(eob, 0xe);
eob = _mm256_max_epi16(eob, eob_s);
eob_s = _mm256_shufflelo_epi16(eob, 0xe);
eob = _mm256_max_epi16(eob, eob_s);
eob_s = _mm256_shufflelo_epi16(eob, 1);
eob = _mm256_max_epi16(eob, eob_s);
return (uint16_t)_mm256_extract_epi16(eob, 0);
}
static AOM_FORCE_INLINE __m256i mm256_mul_shift_epi32_logscale(const __m256i *x,
const __m256i *y,
int log_scale) {
__m256i prod_lo = _mm256_mul_epi32(*x, *y);
__m256i prod_hi = _mm256_srli_epi64(*x, 32);
const __m256i mult_hi = _mm256_srli_epi64(*y, 32);
prod_hi = _mm256_mul_epi32(prod_hi, mult_hi);
prod_lo = _mm256_srli_epi64(prod_lo, 16 - log_scale);
const __m256i mask = _mm256_set_epi32(0, -1, 0, -1, 0, -1, 0, -1);
prod_lo = _mm256_and_si256(prod_lo, mask);
prod_hi = _mm256_srli_epi64(prod_hi, 16 - log_scale);
prod_hi = _mm256_slli_epi64(prod_hi, 32);
return _mm256_or_si256(prod_lo, prod_hi);
}
static AOM_FORCE_INLINE void quantize_logscale(
const __m256i *qp, const tran_low_t *coeff_ptr, const int16_t *iscan_ptr,
tran_low_t *qcoeff, tran_low_t *dqcoeff, __m256i *eob, int log_scale) {
const __m256i coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr);
const __m256i abs_coeff = _mm256_abs_epi32(coeff);
const __m256i zbin_mask = _mm256_cmpgt_epi32(abs_coeff, qp[0]);
if (UNLIKELY(_mm256_movemask_epi8(zbin_mask) == 0)) {
const __m256i zero = _mm256_setzero_si256();
_mm256_storeu_si256((__m256i *)qcoeff, zero);
_mm256_storeu_si256((__m256i *)dqcoeff, zero);
return;
}
const __m256i tmp_rnd =
_mm256_and_si256(_mm256_add_epi32(abs_coeff, qp[1]), zbin_mask);
// const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw;
const __m256i tmp = mm256_mul_shift_epi32_logscale(&tmp_rnd, &qp[2], 0);
const __m256i tmp2 = _mm256_add_epi32(tmp, tmp_rnd);
// const int abs_qcoeff = (int)((tmp2 * quant_shift_ptr[rc != 0]) >>
// (16 - log_scale + AOM_QM_BITS));
const __m256i abs_q =
mm256_mul_shift_epi32_logscale(&tmp2, &qp[4], log_scale);
const __m256i abs_dq =
_mm256_srli_epi32(_mm256_mullo_epi32(abs_q, qp[3]), log_scale);
const __m256i nz_mask = _mm256_cmpgt_epi32(abs_q, _mm256_setzero_si256());
const __m256i q = _mm256_sign_epi32(abs_q, coeff);
const __m256i dq = _mm256_sign_epi32(abs_dq, coeff);
_mm256_storeu_si256((__m256i *)qcoeff, q);
_mm256_storeu_si256((__m256i *)dqcoeff, dq);
*eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask);
}
static AOM_FORCE_INLINE void quantize(const __m256i *qp,
const tran_low_t *coeff_ptr,
const int16_t *iscan_ptr,
tran_low_t *qcoeff, tran_low_t *dqcoeff,
__m256i *eob) {
const __m256i coeff = _mm256_loadu_si256((const __m256i *)coeff_ptr);
const __m256i abs_coeff = _mm256_abs_epi32(coeff);
const __m256i zbin_mask = _mm256_cmpgt_epi32(abs_coeff, qp[0]);
if (UNLIKELY(_mm256_movemask_epi8(zbin_mask) == 0)) {
const __m256i zero = _mm256_setzero_si256();
_mm256_storeu_si256((__m256i *)qcoeff, zero);
_mm256_storeu_si256((__m256i *)dqcoeff, zero);
return;
}
const __m256i tmp_rnd =
_mm256_and_si256(_mm256_add_epi32(abs_coeff, qp[1]), zbin_mask);
const __m256i tmp = mm256_mul_shift_epi32(&tmp_rnd, &qp[2]);
const __m256i tmp2 = _mm256_add_epi32(tmp, tmp_rnd);
const __m256i abs_q = mm256_mul_shift_epi32(&tmp2, &qp[4]);
const __m256i abs_dq = _mm256_mullo_epi32(abs_q, qp[3]);
const __m256i nz_mask = _mm256_cmpgt_epi32(abs_q, _mm256_setzero_si256());
const __m256i q = _mm256_sign_epi32(abs_q, coeff);
const __m256i dq = _mm256_sign_epi32(abs_dq, coeff);
_mm256_storeu_si256((__m256i *)qcoeff, q);
_mm256_storeu_si256((__m256i *)dqcoeff, dq);
*eob = get_max_lane_eob(iscan_ptr, *eob, nz_mask);
}
void aom_highbd_quantize_b_avx2(const tran_low_t *coeff_ptr, intptr_t n_coeffs,
const int16_t *zbin_ptr,
const int16_t *round_ptr,
const int16_t *quant_ptr,
const int16_t *quant_shift_ptr,
tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr,
const int16_t *dequant_ptr, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
(void)scan;
const int step = 8;
__m256i eob = _mm256_setzero_si256();
__m256i qp[5];
init_qp(zbin_ptr, round_ptr, quant_ptr, dequant_ptr, quant_shift_ptr, qp, 0);
quantize(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
update_qp(qp);
while (n_coeffs > 0) {
quantize(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
}
*eob_ptr = get_max_eob(eob);
}
void aom_highbd_quantize_b_32x32_avx2(
const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int16_t *zbin_ptr,
const int16_t *round_ptr, const int16_t *quant_ptr,
const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
(void)scan;
const unsigned int step = 8;
__m256i eob = _mm256_setzero_si256();
__m256i qp[5];
init_qp(zbin_ptr, round_ptr, quant_ptr, dequant_ptr, quant_shift_ptr, qp, 1);
quantize_logscale(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob, 1);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
update_qp(qp);
while (n_coeffs > 0) {
quantize_logscale(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob, 1);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
}
*eob_ptr = get_max_eob(eob);
}
void aom_highbd_quantize_b_64x64_avx2(
const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int16_t *zbin_ptr,
const int16_t *round_ptr, const int16_t *quant_ptr,
const int16_t *quant_shift_ptr, tran_low_t *qcoeff_ptr,
tran_low_t *dqcoeff_ptr, const int16_t *dequant_ptr, uint16_t *eob_ptr,
const int16_t *scan, const int16_t *iscan) {
(void)scan;
const int step = 8;
__m256i eob = _mm256_setzero_si256();
__m256i qp[5];
init_qp(zbin_ptr, round_ptr, quant_ptr, dequant_ptr, quant_shift_ptr, qp, 2);
quantize_logscale(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob, 2);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
update_qp(qp);
while (n_coeffs > 0) {
quantize_logscale(qp, coeff_ptr, iscan, qcoeff_ptr, dqcoeff_ptr, &eob, 2);
coeff_ptr += step;
qcoeff_ptr += step;
dqcoeff_ptr += step;
iscan += step;
n_coeffs -= step;
}
*eob_ptr = get_max_eob(eob);
}
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