| /* | |
| * 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 <emmintrin.h> | |
| #include "config/aom_dsp_rtcd.h" | |
| #include "aom/aom_integer.h" | |
| #include "av1/encoder/av1_quantize.h" | |
| #include "aom_dsp/x86/quantize_x86.h" | |
| void aom_quantize_b_adaptive_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, const int16_t *iscan) { | |
| int index = 16; | |
| int non_zero_count = 0; | |
| int non_zero_count_prescan_add_zero = 0; | |
| int is_found0 = 0, is_found1 = 0; | |
| int eob = -1; | |
| const __m128i zero = _mm_setzero_si128(); | |
| __m128i zbin, round, quant, dequant, shift; | |
| __m128i coeff0, coeff1, coeff0_sign, coeff1_sign; | |
| __m128i qcoeff0, qcoeff1; | |
| __m128i cmp_mask0, cmp_mask1; | |
| __m128i all_zero; | |
| __m128i mask0 = zero, mask1 = zero; | |
| int prescan_add[2]; | |
| int thresh[4]; | |
| const qm_val_t wt = (1 << AOM_QM_BITS); | |
| for (int i = 0; i < 2; ++i) { | |
| prescan_add[i] = ROUND_POWER_OF_TWO(dequant_ptr[i] * EOB_FACTOR, 7); | |
| thresh[i] = (zbin_ptr[i] * wt + prescan_add[i]) - 1; | |
| } | |
| thresh[2] = thresh[3] = thresh[1]; | |
| __m128i threshold[2]; | |
| threshold[0] = _mm_loadu_si128((__m128i *)&thresh[0]); | |
| threshold[1] = _mm_unpackhi_epi64(threshold[0], threshold[0]); | |
| #if SKIP_EOB_FACTOR_ADJUST | |
| int first = -1; | |
| #endif | |
| // 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); | |
| update_mask0(&qcoeff0, &qcoeff1, threshold, iscan, &is_found0, &mask0); | |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); | |
| zbin = _mm_unpackhi_epi64(zbin, zbin); // Switch DC to AC | |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); | |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan, &is_found1, &mask1); | |
| threshold[0] = threshold[1]; | |
| 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(&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); | |
| } | |
| // 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); | |
| update_mask0(&qcoeff0, &qcoeff1, threshold, iscan + index, &is_found0, | |
| &mask0); | |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); | |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); | |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan + index, &is_found1, &mask1); | |
| 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); | |
| index += 16; | |
| continue; | |
| } | |
| 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); | |
| index += 16; | |
| } | |
| if (is_found0) non_zero_count = calculate_non_zero_count(mask0); | |
| if (is_found1) | |
| non_zero_count_prescan_add_zero = calculate_non_zero_count(mask1); | |
| for (int i = non_zero_count_prescan_add_zero - 1; i >= non_zero_count; i--) { | |
| const int rc = scan[i]; | |
| qcoeff_ptr[rc] = 0; | |
| dqcoeff_ptr[rc] = 0; | |
| } | |
| for (int i = non_zero_count - 1; i >= 0; i--) { | |
| const int rc = scan[i]; | |
| if (qcoeff_ptr[rc]) { | |
| eob = i; | |
| break; | |
| } | |
| } | |
| *eob_ptr = eob + 1; | |
| #if SKIP_EOB_FACTOR_ADJUST | |
| // TODO(Aniket): Experiment the following loop with intrinsic by combining | |
| // with the quantization loop above | |
| for (int i = 0; i < non_zero_count; i++) { | |
| const int rc = scan[i]; | |
| const int qcoeff = qcoeff_ptr[rc]; | |
| if (qcoeff) { | |
| first = i; | |
| break; | |
| } | |
| } | |
| if ((*eob_ptr - 1) >= 0 && first == (*eob_ptr - 1)) { | |
| const int rc = scan[(*eob_ptr - 1)]; | |
| if (qcoeff_ptr[rc] == 1 || qcoeff_ptr[rc] == -1) { | |
| const int coeff = coeff_ptr[rc] * wt; | |
| const int coeff_sign = AOMSIGN(coeff); | |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; | |
| const int factor = EOB_FACTOR + SKIP_EOB_FACTOR_ADJUST; | |
| const int prescan_add_val = | |
| ROUND_POWER_OF_TWO(dequant_ptr[rc != 0] * factor, 7); | |
| if (abs_coeff < | |
| (zbin_ptr[rc != 0] * (1 << AOM_QM_BITS) + prescan_add_val)) { | |
| qcoeff_ptr[rc] = 0; | |
| dqcoeff_ptr[rc] = 0; | |
| *eob_ptr = 0; | |
| } | |
| } | |
| } | |
| #endif | |
| } | |
| void aom_quantize_b_32x32_adaptive_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, const int16_t *iscan) { | |
| int index = 16; | |
| const int log_scale = 1; | |
| int non_zero_count = 0; | |
| int non_zero_count_prescan_add_zero = 0; | |
| int is_found0 = 0, is_found1 = 0; | |
| int eob = -1; | |
| const __m128i zero = _mm_setzero_si128(); | |
| const __m128i one = _mm_set1_epi16(1); | |
| const __m128i log_scale_vec = _mm_set1_epi16(log_scale); | |
| __m128i zbin, round, quant, dequant, shift; | |
| __m128i coeff0, coeff1, coeff0_sign, coeff1_sign; | |
| __m128i qcoeff0, qcoeff1; | |
| __m128i cmp_mask0, cmp_mask1; | |
| __m128i all_zero; | |
| __m128i mask0 = zero, mask1 = zero; | |
| const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], log_scale), | |
| ROUND_POWER_OF_TWO(zbin_ptr[1], log_scale) }; | |
| int prescan_add[2]; | |
| int thresh[4]; | |
| const qm_val_t wt = (1 << AOM_QM_BITS); | |
| for (int i = 0; i < 2; ++i) { | |
| prescan_add[i] = ROUND_POWER_OF_TWO(dequant_ptr[i] * EOB_FACTOR, 7); | |
| thresh[i] = (zbins[i] * wt + prescan_add[i]) - 1; | |
| } | |
| thresh[2] = thresh[3] = thresh[1]; | |
| __m128i threshold[2]; | |
| threshold[0] = _mm_loadu_si128((__m128i *)&thresh[0]); | |
| threshold[1] = _mm_unpackhi_epi64(threshold[0], threshold[0]); | |
| #if SKIP_EOB_FACTOR_ADJUST | |
| int first = -1; | |
| #endif | |
| // 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, log_scale_vec); | |
| round = _mm_add_epi16(round, log_scale_vec); | |
| zbin = _mm_srli_epi16(zbin, log_scale); | |
| round = _mm_srli_epi16(round, log_scale); | |
| zbin = _mm_sub_epi16(zbin, one); | |
| // Do DC and first 15 AC. | |
| coeff0 = load_coefficients(coeff_ptr); | |
| coeff1 = load_coefficients(coeff_ptr + 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); | |
| update_mask0(&qcoeff0, &qcoeff1, threshold, iscan, &is_found0, &mask0); | |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); | |
| zbin = _mm_unpackhi_epi64(zbin, zbin); // Switch DC to AC | |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); | |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan, &is_found1, &mask1); | |
| threshold[0] = threshold[1]; | |
| 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_log_scale(&qcoeff0, round, quant, &shift, &log_scale); | |
| round = _mm_unpackhi_epi64(round, round); | |
| quant = _mm_unpackhi_epi64(quant, quant); | |
| shift = _mm_unpackhi_epi64(shift, shift); | |
| calculate_qcoeff_log_scale(&qcoeff1, round, quant, &shift, &log_scale); | |
| // 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); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff0, dequant, zero, dqcoeff_ptr, | |
| &log_scale); | |
| dequant = _mm_unpackhi_epi64(dequant, dequant); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff1, dequant, zero, | |
| dqcoeff_ptr + 8, &log_scale); | |
| } | |
| // 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); | |
| update_mask0(&qcoeff0, &qcoeff1, threshold, iscan + index, &is_found0, | |
| &mask0); | |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); | |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); | |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan + index, &is_found1, &mask1); | |
| 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); | |
| index += 16; | |
| continue; | |
| } | |
| calculate_qcoeff_log_scale(&qcoeff0, round, quant, &shift, &log_scale); | |
| calculate_qcoeff_log_scale(&qcoeff1, round, quant, &shift, &log_scale); | |
| 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); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff0, dequant, zero, | |
| dqcoeff_ptr + index, &log_scale); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff1, dequant, zero, | |
| dqcoeff_ptr + index + 8, &log_scale); | |
| index += 16; | |
| } | |
| if (is_found0) non_zero_count = calculate_non_zero_count(mask0); | |
| if (is_found1) | |
| non_zero_count_prescan_add_zero = calculate_non_zero_count(mask1); | |
| for (int i = non_zero_count_prescan_add_zero - 1; i >= non_zero_count; i--) { | |
| const int rc = scan[i]; | |
| qcoeff_ptr[rc] = 0; | |
| dqcoeff_ptr[rc] = 0; | |
| } | |
| for (int i = non_zero_count - 1; i >= 0; i--) { | |
| const int rc = scan[i]; | |
| if (qcoeff_ptr[rc]) { | |
| eob = i; | |
| break; | |
| } | |
| } | |
| *eob_ptr = eob + 1; | |
| #if SKIP_EOB_FACTOR_ADJUST | |
| // TODO(Aniket): Experiment the following loop with intrinsic by combining | |
| // with the quantization loop above | |
| for (int i = 0; i < non_zero_count; i++) { | |
| const int rc = scan[i]; | |
| const int qcoeff = qcoeff_ptr[rc]; | |
| if (qcoeff) { | |
| first = i; | |
| break; | |
| } | |
| } | |
| if ((*eob_ptr - 1) >= 0 && first == (*eob_ptr - 1)) { | |
| const int rc = scan[(*eob_ptr - 1)]; | |
| if (qcoeff_ptr[rc] == 1 || qcoeff_ptr[rc] == -1) { | |
| const int coeff = coeff_ptr[rc] * wt; | |
| const int coeff_sign = AOMSIGN(coeff); | |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; | |
| const int factor = EOB_FACTOR + SKIP_EOB_FACTOR_ADJUST; | |
| const int prescan_add_val = | |
| ROUND_POWER_OF_TWO(dequant_ptr[rc != 0] * factor, 7); | |
| if (abs_coeff < (zbins[rc != 0] * (1 << AOM_QM_BITS) + prescan_add_val)) { | |
| qcoeff_ptr[rc] = 0; | |
| dqcoeff_ptr[rc] = 0; | |
| *eob_ptr = 0; | |
| } | |
| } | |
| } | |
| #endif | |
| } | |
| void aom_quantize_b_64x64_adaptive_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, const int16_t *iscan) { | |
| int index = 16; | |
| const int log_scale = 2; | |
| int non_zero_count = 0; | |
| int non_zero_count_prescan_add_zero = 0; | |
| int is_found0 = 0, is_found1 = 0; | |
| int eob = -1; | |
| const __m128i zero = _mm_setzero_si128(); | |
| const __m128i one = _mm_set1_epi16(1); | |
| const __m128i log_scale_vec = _mm_set1_epi16(log_scale); | |
| __m128i zbin, round, quant, dequant, shift; | |
| __m128i coeff0, coeff1, coeff0_sign, coeff1_sign; | |
| __m128i qcoeff0, qcoeff1; | |
| __m128i cmp_mask0, cmp_mask1; | |
| __m128i all_zero; | |
| __m128i mask0 = zero, mask1 = zero; | |
| const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], log_scale), | |
| ROUND_POWER_OF_TWO(zbin_ptr[1], log_scale) }; | |
| int prescan_add[2]; | |
| int thresh[4]; | |
| const qm_val_t wt = (1 << AOM_QM_BITS); | |
| for (int i = 0; i < 2; ++i) { | |
| prescan_add[i] = ROUND_POWER_OF_TWO(dequant_ptr[i] * EOB_FACTOR, 7); | |
| thresh[i] = (zbins[i] * wt + prescan_add[i]) - 1; | |
| } | |
| thresh[2] = thresh[3] = thresh[1]; | |
| __m128i threshold[2]; | |
| threshold[0] = _mm_loadu_si128((__m128i *)&thresh[0]); | |
| threshold[1] = _mm_unpackhi_epi64(threshold[0], threshold[0]); | |
| #if SKIP_EOB_FACTOR_ADJUST | |
| int first = -1; | |
| #endif | |
| // 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, log_scale_vec); | |
| round = _mm_add_epi16(round, log_scale_vec); | |
| zbin = _mm_srli_epi16(zbin, log_scale); | |
| round = _mm_srli_epi16(round, log_scale); | |
| zbin = _mm_sub_epi16(zbin, one); | |
| // Do DC and first 15 AC. | |
| coeff0 = load_coefficients(coeff_ptr); | |
| coeff1 = load_coefficients(coeff_ptr + 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); | |
| update_mask0(&qcoeff0, &qcoeff1, threshold, iscan, &is_found0, &mask0); | |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); | |
| zbin = _mm_unpackhi_epi64(zbin, zbin); // Switch DC to AC | |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); | |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan, &is_found1, &mask1); | |
| threshold[0] = threshold[1]; | |
| 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_log_scale(&qcoeff0, round, quant, &shift, &log_scale); | |
| round = _mm_unpackhi_epi64(round, round); | |
| quant = _mm_unpackhi_epi64(quant, quant); | |
| shift = _mm_unpackhi_epi64(shift, shift); | |
| calculate_qcoeff_log_scale(&qcoeff1, round, quant, &shift, &log_scale); | |
| // 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); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff0, dequant, zero, dqcoeff_ptr, | |
| &log_scale); | |
| dequant = _mm_unpackhi_epi64(dequant, dequant); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff1, dequant, zero, | |
| dqcoeff_ptr + 8, &log_scale); | |
| } | |
| // 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); | |
| update_mask0(&qcoeff0, &qcoeff1, threshold, iscan + index, &is_found0, | |
| &mask0); | |
| cmp_mask0 = _mm_cmpgt_epi16(qcoeff0, zbin); | |
| cmp_mask1 = _mm_cmpgt_epi16(qcoeff1, zbin); | |
| update_mask1(&cmp_mask0, &cmp_mask1, iscan + index, &is_found1, &mask1); | |
| 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); | |
| index += 16; | |
| continue; | |
| } | |
| calculate_qcoeff_log_scale(&qcoeff0, round, quant, &shift, &log_scale); | |
| calculate_qcoeff_log_scale(&qcoeff1, round, quant, &shift, &log_scale); | |
| 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); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff0, dequant, zero, | |
| dqcoeff_ptr + index, &log_scale); | |
| calculate_dqcoeff_and_store_log_scale(qcoeff1, dequant, zero, | |
| dqcoeff_ptr + index + 8, &log_scale); | |
| index += 16; | |
| } | |
| if (is_found0) non_zero_count = calculate_non_zero_count(mask0); | |
| if (is_found1) | |
| non_zero_count_prescan_add_zero = calculate_non_zero_count(mask1); | |
| for (int i = non_zero_count_prescan_add_zero - 1; i >= non_zero_count; i--) { | |
| const int rc = scan[i]; | |
| qcoeff_ptr[rc] = 0; | |
| dqcoeff_ptr[rc] = 0; | |
| } | |
| for (int i = non_zero_count - 1; i >= 0; i--) { | |
| const int rc = scan[i]; | |
| if (qcoeff_ptr[rc]) { | |
| eob = i; | |
| break; | |
| } | |
| } | |
| *eob_ptr = eob + 1; | |
| #if SKIP_EOB_FACTOR_ADJUST | |
| // TODO(Aniket): Experiment the following loop with intrinsic by combining | |
| // with the quantization loop above | |
| for (int i = 0; i < non_zero_count; i++) { | |
| const int rc = scan[i]; | |
| const int qcoeff = qcoeff_ptr[rc]; | |
| if (qcoeff) { | |
| first = i; | |
| break; | |
| } | |
| } | |
| if ((*eob_ptr - 1) >= 0 && first == (*eob_ptr - 1)) { | |
| const int rc = scan[(*eob_ptr - 1)]; | |
| if (qcoeff_ptr[rc] == 1 || qcoeff_ptr[rc] == -1) { | |
| const int coeff = coeff_ptr[rc] * wt; | |
| const int coeff_sign = AOMSIGN(coeff); | |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; | |
| const int factor = EOB_FACTOR + SKIP_EOB_FACTOR_ADJUST; | |
| const int prescan_add_val = | |
| ROUND_POWER_OF_TWO(dequant_ptr[rc != 0] * factor, 7); | |
| if (abs_coeff < (zbins[rc != 0] * (1 << AOM_QM_BITS) + prescan_add_val)) { | |
| qcoeff_ptr[rc] = 0; | |
| dqcoeff_ptr[rc] = 0; | |
| *eob_ptr = 0; | |
| } | |
| } | |
| } | |
| #endif | |
| } |