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/*
* Copyright (c) 2019, 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 <assert.h>
#include <tmmintrin.h>
#include <emmintrin.h>
#include <xmmintrin.h>
#include "config/aom_dsp_rtcd.h"
#include "aom/aom_integer.h"
#include "aom_dsp/x86/quantize_x86.h"
static INLINE void calculate_qcoeff_64x64(__m128i *coeff, const __m128i round,
const __m128i quant,
const __m128i *shift) {
__m128i tmp, qcoeff, tmp1;
qcoeff = _mm_adds_epi16(*coeff, round);
tmp = _mm_mulhi_epi16(qcoeff, quant);
qcoeff = _mm_add_epi16(tmp, qcoeff);
tmp = _mm_mullo_epi16(qcoeff, *shift);
tmp = _mm_srli_epi16(tmp, 14);
tmp1 = _mm_mulhi_epi16(qcoeff, *shift);
tmp1 = _mm_slli_epi16(tmp1, 2);
*coeff = _mm_or_si128(tmp, tmp1);
}
static INLINE void calculate_dqcoeff_and_store_64x64(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 4.
dqcoeff32_0 = _mm_srli_epi32(dqcoeff32_0, 2);
dqcoeff32_1 = _mm_srli_epi32(dqcoeff32_1, 2);
dqcoeff32_0 = _mm_sign_epi32(dqcoeff32_0, sign_0);
dqcoeff32_1 = _mm_sign_epi32(dqcoeff32_1, sign_1);
_mm_store_si128((__m128i *)(dqcoeff), dqcoeff32_0);
_mm_store_si128((__m128i *)(dqcoeff + 4), dqcoeff32_1);
}
void aom_quantize_b_64x64_ssse3(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) {
const __m128i zero = _mm_setzero_si128();
const __m128i one = _mm_set1_epi16(1);
const __m128i two = _mm_set1_epi16(2);
int index;
__m128i zbin, round, quant, dequant, shift;
__m128i coeff0, coeff1, qcoeff0, qcoeff1;
__m128i cmp_mask0, cmp_mask1, all_zero;
__m128i eob = zero, eob0;
(void)scan;
(void)n_coeffs;
// Setup global values.
zbin = _mm_load_si128((const __m128i *)zbin_ptr);
round = _mm_load_si128((const __m128i *)round_ptr);
quant = _mm_load_si128((const __m128i *)quant_ptr);
dequant = _mm_load_si128((const __m128i *)dequant_ptr);
shift = _mm_load_si128((const __m128i *)quant_shift_ptr);
// Shift with rounding.
zbin = _mm_add_epi16(zbin, two);
round = _mm_add_epi16(round, two);
zbin = _mm_srli_epi16(zbin, 2);
round = _mm_srli_epi16(round, 2);
zbin = _mm_sub_epi16(zbin, one);
// Do DC and first 15 AC.
coeff0 = load_coefficients(coeff_ptr);
coeff1 = load_coefficients(coeff_ptr + 8);
qcoeff0 = _mm_abs_epi16(coeff0);
qcoeff1 = _mm_abs_epi16(coeff1);
cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
zbin = _mm_unpackhi_epi64(zbin, zbin);
cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
all_zero = _mm_or_si128(cmp_mask0, cmp_mask1);
if (_mm_movemask_epi8(all_zero) == 0) {
_mm_store_si128((__m128i *)(qcoeff_ptr), zero);
_mm_store_si128((__m128i *)(qcoeff_ptr + 4), zero);
_mm_store_si128((__m128i *)(qcoeff_ptr + 8), zero);
_mm_store_si128((__m128i *)(qcoeff_ptr + 12), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + 4), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + 8), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + 12), zero);
round = _mm_unpackhi_epi64(round, round);
quant = _mm_unpackhi_epi64(quant, quant);
shift = _mm_unpackhi_epi64(shift, shift);
dequant = _mm_unpackhi_epi64(dequant, dequant);
} else {
calculate_qcoeff_64x64(&qcoeff0, round, quant, &shift);
round = _mm_unpackhi_epi64(round, round);
quant = _mm_unpackhi_epi64(quant, quant);
shift = _mm_unpackhi_epi64(shift, shift);
calculate_qcoeff_64x64(&qcoeff1, round, quant, &shift);
// Reinsert signs.
qcoeff0 = _mm_sign_epi16(qcoeff0, coeff0);
qcoeff1 = _mm_sign_epi16(qcoeff1, coeff1);
// Mask out zbin threshold coeffs.
qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
store_coefficients(qcoeff0, qcoeff_ptr);
store_coefficients(qcoeff1, qcoeff_ptr + 8);
calculate_dqcoeff_and_store_64x64(qcoeff0, dequant, zero, dqcoeff_ptr);
dequant = _mm_unpackhi_epi64(dequant, dequant);
calculate_dqcoeff_and_store_64x64(qcoeff1, dequant, zero, dqcoeff_ptr + 8);
eob =
scan_for_eob(&qcoeff0, &qcoeff1, cmp_mask0, cmp_mask1, iscan, 0, zero);
}
// AC only loop.
for (index = 16; index < 1024; index += 16) {
coeff0 = load_coefficients(coeff_ptr + index);
coeff1 = load_coefficients(coeff_ptr + index + 8);
qcoeff0 = _mm_abs_epi16(coeff0);
qcoeff1 = _mm_abs_epi16(coeff1);
cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin);
cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin);
all_zero = _mm_or_si128(cmp_mask0, cmp_mask1);
if (_mm_movemask_epi8(all_zero) == 0) {
_mm_store_si128((__m128i *)(qcoeff_ptr + index), zero);
_mm_store_si128((__m128i *)(qcoeff_ptr + index + 4), zero);
_mm_store_si128((__m128i *)(qcoeff_ptr + index + 8), zero);
_mm_store_si128((__m128i *)(qcoeff_ptr + index + 12), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + index), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + index + 4), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + index + 8), zero);
_mm_store_si128((__m128i *)(dqcoeff_ptr + index + 12), zero);
continue;
}
calculate_qcoeff_64x64(&qcoeff0, round, quant, &shift);
calculate_qcoeff_64x64(&qcoeff1, round, quant, &shift);
qcoeff0 = _mm_sign_epi16(qcoeff0, coeff0);
qcoeff1 = _mm_sign_epi16(qcoeff1, coeff1);
qcoeff0 = _mm_and_si128(qcoeff0, cmp_mask0);
qcoeff1 = _mm_and_si128(qcoeff1, cmp_mask1);
store_coefficients(qcoeff0, qcoeff_ptr + index);
store_coefficients(qcoeff1, qcoeff_ptr + index + 8);
calculate_dqcoeff_and_store_64x64(qcoeff0, dequant, zero,
dqcoeff_ptr + index);
calculate_dqcoeff_and_store_64x64(qcoeff1, dequant, zero,
dqcoeff_ptr + 8 + index);
eob0 = scan_for_eob(&qcoeff0, &qcoeff1, cmp_mask0, cmp_mask1, iscan, index,
zero);
eob = _mm_max_epi16(eob, eob0);
}
*eob_ptr = accumulate_eob(eob);
}
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