| /* |
| * Copyright (c) 2016, 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 <emmintrin.h> |
| #include <xmmintrin.h> |
| |
| #include "config/aom_dsp_rtcd.h" |
| |
| #include "aom/aom_integer.h" |
| #include "aom_dsp/x86/quantize_x86.h" |
| |
| void aom_quantize_b_sse2(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_ptr, |
| const int16_t *iscan_ptr) { |
| const __m128i zero = _mm_setzero_si128(); |
| int index = 16; |
| |
| __m128i zbin, round, quant, dequant, shift; |
| __m128i coeff0, coeff1, coeff0_sign, coeff1_sign; |
| __m128i qcoeff0, qcoeff1; |
| __m128i cmp_mask0, cmp_mask1; |
| __m128i eob, eob0; |
| |
| (void)scan_ptr; |
| |
| // Setup global values. |
| load_b_values(zbin_ptr, &zbin, round_ptr, &round, quant_ptr, &quant, |
| dequant_ptr, &dequant, quant_shift_ptr, &shift); |
| |
| // Do DC and first 15 AC. |
| coeff0 = load_coefficients(coeff_ptr); |
| coeff1 = load_coefficients(coeff_ptr + 8); |
| |
| // Poor man's abs(). |
| coeff0_sign = _mm_srai_epi16(coeff0, 15); |
| coeff1_sign = _mm_srai_epi16(coeff1, 15); |
| qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign); |
| qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign); |
| |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); |
| zbin = _mm_unpackhi_epi64(zbin, zbin); // Switch DC to AC |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); |
| |
| calculate_qcoeff(&qcoeff0, round, quant, shift); |
| |
| round = _mm_unpackhi_epi64(round, round); |
| quant = _mm_unpackhi_epi64(quant, quant); |
| shift = _mm_unpackhi_epi64(shift, shift); |
| |
| calculate_qcoeff(&qcoeff1, round, quant, shift); |
| |
| // Reinsert signs |
| qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign); |
| qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign); |
| |
| // 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); |
| |
| coeff0 = calculate_dqcoeff(qcoeff0, dequant); |
| dequant = _mm_unpackhi_epi64(dequant, dequant); |
| coeff1 = calculate_dqcoeff(qcoeff1, dequant); |
| |
| store_coefficients(coeff0, dqcoeff_ptr); |
| store_coefficients(coeff1, dqcoeff_ptr + 8); |
| |
| eob = |
| scan_for_eob(&coeff0, &coeff1, cmp_mask0, cmp_mask1, iscan_ptr, 0, zero); |
| |
| // AC only loop. |
| while (index < n_coeffs) { |
| coeff0 = load_coefficients(coeff_ptr + index); |
| coeff1 = load_coefficients(coeff_ptr + index + 8); |
| |
| coeff0_sign = _mm_srai_epi16(coeff0, 15); |
| coeff1_sign = _mm_srai_epi16(coeff1, 15); |
| qcoeff0 = invert_sign_sse2(coeff0, coeff0_sign); |
| qcoeff1 = invert_sign_sse2(coeff1, coeff1_sign); |
| |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); |
| |
| calculate_qcoeff(&qcoeff0, round, quant, shift); |
| calculate_qcoeff(&qcoeff1, round, quant, shift); |
| |
| qcoeff0 = invert_sign_sse2(qcoeff0, coeff0_sign); |
| qcoeff1 = invert_sign_sse2(qcoeff1, coeff1_sign); |
| |
| 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); |
| |
| coeff0 = calculate_dqcoeff(qcoeff0, dequant); |
| coeff1 = calculate_dqcoeff(qcoeff1, dequant); |
| |
| store_coefficients(coeff0, dqcoeff_ptr + index); |
| store_coefficients(coeff1, dqcoeff_ptr + index + 8); |
| |
| eob0 = scan_for_eob(&coeff0, &coeff1, cmp_mask0, cmp_mask1, iscan_ptr, |
| index, zero); |
| eob = _mm_max_epi16(eob, eob0); |
| |
| index += 16; |
| } |
| |
| *eob_ptr = accumulate_eob(eob); |
| } |