| /* |
| * Copyright (c) 2021, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 3-Clause Clear License |
| * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear |
| * License was not distributed with this source code in the LICENSE file, you |
| * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/. 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 |
| * aomedia.org/license/patent-license/. |
| */ |
| |
| #include "aom_dsp/quantize.h" |
| #include "aom_mem/aom_mem.h" |
| #include "av1/encoder/av1_quantize.h" |
| |
| void aom_highbd_quantize_b_adaptive_helper_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan, const qm_val_t *qm_ptr, |
| const qm_val_t *iqm_ptr, const int log_scale) { |
| const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], log_scale), |
| ROUND_POWER_OF_TWO(zbin_ptr[1], log_scale) }; |
| const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 }; |
| (void)iscan; |
| int i, non_zero_count = (int)n_coeffs, eob = -1; |
| |
| memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); |
| memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); |
| |
| int prescan_add[2]; |
| for (i = 0; i < 2; ++i) |
| prescan_add[i] = |
| ROUND_POWER_OF_TWO(dequant_ptr[i] * EOB_FACTOR, 7 + QUANT_TABLE_BITS); |
| |
| // Pre-scan pass |
| for (i = (int)n_coeffs - 1; i >= 0; i--) { |
| const int rc = scan[i]; |
| const qm_val_t wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS); |
| const int coeff = coeff_ptr[rc] * wt; |
| const int prescan_add_val = prescan_add[rc != 0]; |
| if (coeff < (zbins[rc != 0] * (1 << AOM_QM_BITS) + prescan_add_val) && |
| coeff > (nzbins[rc != 0] * (1 << AOM_QM_BITS) - prescan_add_val)) |
| non_zero_count--; |
| else |
| break; |
| } |
| |
| // Quantization pass: All coefficients with index >= zero_flag are |
| // skippable. Note: zero_flag can be zero. |
| #if SKIP_EOB_FACTOR_ADJUST |
| int first = -1; |
| #endif // SKIP_EOB_FACTOR_ADJUST |
| for (i = 0; i < non_zero_count; i++) { |
| const int rc = scan[i]; |
| const int coeff = coeff_ptr[rc]; |
| const int coeff_sign = AOMSIGN(coeff); |
| const qm_val_t wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS); |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; |
| if (abs_coeff * wt >= (zbins[rc != 0] << AOM_QM_BITS)) { |
| const int64_t tmp1 = |
| abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], log_scale); |
| const int64_t tmpw = tmp1 * wt; |
| const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw; |
| const int abs_qcoeff = (int)((tmp2 * quant_shift_ptr[rc != 0]) >> |
| (16 - log_scale + AOM_QM_BITS)); |
| qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| const qm_val_t iwt = iqm_ptr != NULL ? iqm_ptr[rc] : (1 << AOM_QM_BITS); |
| const int dequant = |
| (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> |
| AOM_QM_BITS; |
| const tran_low_t abs_dqcoeff = |
| (tran_low_t)ROUND_POWER_OF_TWO_64(abs_qcoeff * dequant, |
| QUANT_TABLE_BITS) >> |
| log_scale; |
| dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign); |
| if (abs_qcoeff) { |
| eob = i; |
| #if SKIP_EOB_FACTOR_ADJUST |
| if (first == -1) first = eob; |
| #endif // SKIP_EOB_FACTOR_ADJUST |
| } |
| } |
| } |
| #if SKIP_EOB_FACTOR_ADJUST |
| if (eob >= 0 && first == eob) { |
| const int rc = scan[eob]; |
| if (qcoeff_ptr[rc] == 1 || qcoeff_ptr[rc] == -1) { |
| const qm_val_t wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS); |
| const int coeff = coeff_ptr[rc] * wt; |
| const int factor = EOB_FACTOR + SKIP_EOB_FACTOR_ADJUST; |
| const int prescan_add_val = ROUND_POWER_OF_TWO( |
| dequant_ptr[rc != 0] * factor, 7 + QUANT_TABLE_BITS); |
| if (coeff < (zbins[rc != 0] * (1 << AOM_QM_BITS) + prescan_add_val) && |
| coeff > (nzbins[rc != 0] * (1 << AOM_QM_BITS) - prescan_add_val)) { |
| qcoeff_ptr[rc] = 0; |
| dqcoeff_ptr[rc] = 0; |
| eob = -1; |
| } |
| } |
| } |
| #endif // SKIP_EOB_FACTOR_ADJUST |
| *eob_ptr = eob + 1; |
| } |
| |
| void aom_highbd_quantize_b_helper_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan, const qm_val_t *qm_ptr, |
| const qm_val_t *iqm_ptr, const int log_scale) { |
| int i, eob = -1; |
| const int zbins[2] = { ROUND_POWER_OF_TWO(zbin_ptr[0], log_scale), |
| ROUND_POWER_OF_TWO(zbin_ptr[1], log_scale) }; |
| const int nzbins[2] = { zbins[0] * -1, zbins[1] * -1 }; |
| int dequant; |
| int idx_arr[4096]; |
| (void)iscan; |
| int idx = 0; |
| |
| memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); |
| memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); |
| |
| // Pre-scan pass |
| for (i = 0; i < n_coeffs; i++) { |
| const int rc = scan[i]; |
| const qm_val_t wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS); |
| const int coeff = coeff_ptr[rc] * wt; |
| |
| // If the coefficient is out of the base ZBIN range, keep it for |
| // quantization. |
| if (coeff >= (zbins[rc != 0] * (1 << AOM_QM_BITS)) || |
| coeff <= (nzbins[rc != 0] * (1 << AOM_QM_BITS))) |
| idx_arr[idx++] = i; |
| } |
| |
| // Quantization pass: only process the coefficients selected in |
| // pre-scan pass. Note: idx can be zero. |
| for (i = 0; i < idx; i++) { |
| const int rc = scan[idx_arr[i]]; |
| const int coeff = coeff_ptr[rc]; |
| const int coeff_sign = AOMSIGN(coeff); |
| const qm_val_t wt = qm_ptr != NULL ? qm_ptr[rc] : (1 << AOM_QM_BITS); |
| const qm_val_t iwt = iqm_ptr != NULL ? iqm_ptr[rc] : (1 << AOM_QM_BITS); |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; |
| const int64_t tmp1 = |
| abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], log_scale); |
| const int64_t tmpw = tmp1 * wt; |
| const int64_t tmp2 = ((tmpw * quant_ptr[rc != 0]) >> 16) + tmpw; |
| const int abs_qcoeff = (int)((tmp2 * quant_shift_ptr[rc != 0]) >> |
| (16 - log_scale + AOM_QM_BITS)); |
| qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| dequant = |
| (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> AOM_QM_BITS; |
| const tran_low_t abs_dqcoeff = |
| (tran_low_t)ROUND_POWER_OF_TWO_64(abs_qcoeff * dequant, |
| QUANT_TABLE_BITS) >> |
| log_scale; |
| dqcoeff_ptr[rc] = (tran_low_t)((abs_dqcoeff ^ coeff_sign) - coeff_sign); |
| if (abs_qcoeff) eob = idx_arr[i]; |
| } |
| *eob_ptr = eob + 1; |
| } |
| |
| void aom_highbd_quantize_b_adaptive_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| aom_highbd_quantize_b_adaptive_helper_c(coeff_ptr, n_coeffs, zbin_ptr, |
| round_ptr, quant_ptr, quant_shift_ptr, |
| qcoeff_ptr, dqcoeff_ptr, dequant_ptr, |
| eob_ptr, scan, iscan, NULL, NULL, 0); |
| } |
| |
| void aom_highbd_quantize_b_32x32_adaptive_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| aom_highbd_quantize_b_adaptive_helper_c(coeff_ptr, n_coeffs, zbin_ptr, |
| round_ptr, quant_ptr, quant_shift_ptr, |
| qcoeff_ptr, dqcoeff_ptr, dequant_ptr, |
| eob_ptr, scan, iscan, NULL, NULL, 1); |
| } |
| |
| void aom_highbd_quantize_b_64x64_adaptive_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| aom_highbd_quantize_b_adaptive_helper_c(coeff_ptr, n_coeffs, zbin_ptr, |
| round_ptr, quant_ptr, quant_shift_ptr, |
| qcoeff_ptr, dqcoeff_ptr, dequant_ptr, |
| eob_ptr, scan, iscan, NULL, NULL, 2); |
| } |
| |
| void aom_highbd_quantize_b_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs, |
| const int32_t *zbin_ptr, const int32_t *round_ptr, |
| const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, |
| tran_low_t *qcoeff_ptr, tran_low_t *dqcoeff_ptr, |
| const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| aom_highbd_quantize_b_helper_c(coeff_ptr, n_coeffs, zbin_ptr, round_ptr, |
| quant_ptr, quant_shift_ptr, qcoeff_ptr, |
| dqcoeff_ptr, dequant_ptr, eob_ptr, scan, iscan, |
| NULL, NULL, 0); |
| } |
| |
| void aom_highbd_quantize_b_32x32_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| aom_highbd_quantize_b_helper_c(coeff_ptr, n_coeffs, zbin_ptr, round_ptr, |
| quant_ptr, quant_shift_ptr, qcoeff_ptr, |
| dqcoeff_ptr, dequant_ptr, eob_ptr, scan, iscan, |
| NULL, NULL, 1); |
| } |
| |
| void aom_highbd_quantize_b_64x64_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, const int32_t *zbin_ptr, |
| const int32_t *round_ptr, const int32_t *quant_ptr, |
| const int32_t *quant_shift_ptr, tran_low_t *qcoeff_ptr, |
| tran_low_t *dqcoeff_ptr, const int32_t *dequant_ptr, uint16_t *eob_ptr, |
| const int16_t *scan, const int16_t *iscan) { |
| aom_highbd_quantize_b_helper_c(coeff_ptr, n_coeffs, zbin_ptr, round_ptr, |
| quant_ptr, quant_shift_ptr, qcoeff_ptr, |
| dqcoeff_ptr, dequant_ptr, eob_ptr, scan, iscan, |
| NULL, NULL, 2); |
| } |