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-rw-r--r-- | third_party/aom/aom_dsp/x86/adaptive_quantize_sse2.c | 633 |
1 files changed, 633 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/x86/adaptive_quantize_sse2.c b/third_party/aom/aom_dsp/x86/adaptive_quantize_sse2.c new file mode 100644 index 0000000000..503b9b4682 --- /dev/null +++ b/third_party/aom/aom_dsp/x86/adaptive_quantize_sse2.c @@ -0,0 +1,633 @@ +/* + * 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 "aom_dsp/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 +} |