| /* |
| * 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 <math.h> |
| #include "./aom_dsp_rtcd.h" |
| #include "aom_mem/aom_mem.h" |
| #include "aom_ports/mem.h" |
| |
| #include "av1/common/quant_common.h" |
| #include "av1/common/seg_common.h" |
| |
| #include "av1/encoder/encoder.h" |
| #include "av1/encoder/quantize.h" |
| #include "av1/encoder/rd.h" |
| |
| void av1_quantize_fp_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs, |
| int skip_block, 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 |
| #if CONFIG_AOM_QM |
| , |
| const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr |
| #endif |
| ) { |
| int i, eob = -1; |
| // TODO(jingning) Decide the need of these arguments after the |
| // quantization process is completed. |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| (void)iscan; |
| |
| memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); |
| memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); |
| |
| if (!skip_block) { |
| // Quantization pass: All coefficients with index >= zero_flag are |
| // skippable. Note: zero_flag can be zero. |
| for (i = 0; i < n_coeffs; i++) { |
| const int rc = scan[i]; |
| const int coeff = coeff_ptr[rc]; |
| #if CONFIG_AOM_QM |
| const qm_val_t wt = qm_ptr[rc]; |
| const qm_val_t iwt = iqm_ptr[rc]; |
| const int dequant = |
| (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> |
| AOM_QM_BITS; |
| #endif |
| const int coeff_sign = (coeff >> 31); |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; |
| |
| int64_t tmp = clamp(abs_coeff + round_ptr[rc != 0], INT16_MIN, INT16_MAX); |
| int tmp32; |
| #if CONFIG_AOM_QM |
| tmp32 = (int)((tmp * wt * quant_ptr[rc != 0]) >> (16 + AOM_QM_BITS)); |
| qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign; |
| dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant; |
| #else |
| tmp32 = (int)((tmp * quant_ptr[rc != 0]) >> 16); |
| qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign; |
| dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0]; |
| #endif |
| |
| if (tmp32) eob = i; |
| } |
| } |
| *eob_ptr = eob + 1; |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| void av1_highbd_quantize_fp_c(const tran_low_t *coeff_ptr, intptr_t count, |
| int skip_block, 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 |
| #if CONFIG_AOM_QM |
| , |
| const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr |
| #endif |
| ) { |
| int i; |
| int eob = -1; |
| // TODO(jingning) Decide the need of these arguments after the |
| // quantization process is completed. |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| (void)iscan; |
| |
| memset(qcoeff_ptr, 0, count * sizeof(*qcoeff_ptr)); |
| memset(dqcoeff_ptr, 0, count * sizeof(*dqcoeff_ptr)); |
| |
| if (!skip_block) { |
| // Quantization pass: All coefficients with index >= zero_flag are |
| // skippable. Note: zero_flag can be zero. |
| for (i = 0; i < count; i++) { |
| const int rc = scan[i]; |
| const int coeff = coeff_ptr[rc]; |
| #if CONFIG_AOM_QM |
| const qm_val_t wt = qm_ptr[rc]; |
| const qm_val_t iwt = iqm_ptr[rc]; |
| const int dequant = |
| (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> |
| AOM_QM_BITS; |
| #endif |
| const int coeff_sign = (coeff >> 31); |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; |
| const int64_t tmp = abs_coeff + round_ptr[rc != 0]; |
| #if CONFIG_AOM_QM |
| const uint32_t abs_qcoeff = |
| (uint32_t)((tmp * quant_ptr[rc != 0] * wt) >> (16 + AOM_QM_BITS)); |
| qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant; |
| #else |
| const uint32_t abs_qcoeff = (uint32_t)((tmp * quant_ptr[rc != 0]) >> 16); |
| qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| dqcoeff_ptr[rc] = qcoeff_ptr[rc] * dequant_ptr[rc != 0]; |
| #endif |
| if (abs_qcoeff) eob = i; |
| } |
| } |
| *eob_ptr = eob + 1; |
| } |
| #endif |
| |
| // TODO(jingning) Refactor this file and combine functions with similar |
| // operations. |
| void av1_quantize_fp_32x32_c(const tran_low_t *coeff_ptr, intptr_t n_coeffs, |
| int skip_block, 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 |
| #if CONFIG_AOM_QM |
| , |
| const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr |
| #endif |
| ) { |
| int i, eob = -1; |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| (void)iscan; |
| |
| memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); |
| memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); |
| |
| if (!skip_block) { |
| for (i = 0; i < n_coeffs; i++) { |
| const int rc = scan[i]; |
| const int coeff = coeff_ptr[rc]; |
| #if CONFIG_AOM_QM |
| const qm_val_t wt = qm_ptr[rc]; |
| const qm_val_t iwt = iqm_ptr[rc]; |
| const int dequant = |
| (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> |
| AOM_QM_BITS; |
| int64_t tmp = 0; |
| #endif |
| const int coeff_sign = (coeff >> 31); |
| int tmp32 = 0; |
| int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; |
| |
| #if CONFIG_AOM_QM |
| if (abs_coeff * wt >= (dequant_ptr[rc != 0] << (AOM_QM_BITS - 2))) { |
| #else |
| if (abs_coeff >= (dequant_ptr[rc != 0] >> 2)) { |
| #endif |
| abs_coeff += ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1); |
| abs_coeff = clamp(abs_coeff, INT16_MIN, INT16_MAX); |
| #if CONFIG_AOM_QM |
| tmp = abs_coeff * wt; |
| tmp32 = (int)(tmp * quant_ptr[rc != 0]) >> (AOM_QM_BITS + 15); |
| qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign; |
| dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant) / 2; |
| #else |
| tmp32 = (abs_coeff * quant_ptr[rc != 0]) >> 15; |
| qcoeff_ptr[rc] = (tmp32 ^ coeff_sign) - coeff_sign; |
| dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant_ptr[rc != 0]) / 2; |
| #endif |
| } |
| |
| if (tmp32) eob = i; |
| } |
| } |
| *eob_ptr = eob + 1; |
| } |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| void av1_highbd_quantize_fp_32x32_c( |
| const tran_low_t *coeff_ptr, intptr_t n_coeffs, int skip_block, |
| 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 |
| #if CONFIG_AOM_QM |
| , |
| const qm_val_t *qm_ptr, const qm_val_t *iqm_ptr |
| #endif |
| ) { |
| int i, eob = -1; |
| (void)zbin_ptr; |
| (void)quant_shift_ptr; |
| (void)iscan; |
| |
| memset(qcoeff_ptr, 0, n_coeffs * sizeof(*qcoeff_ptr)); |
| memset(dqcoeff_ptr, 0, n_coeffs * sizeof(*dqcoeff_ptr)); |
| |
| if (!skip_block) { |
| for (i = 0; i < n_coeffs; i++) { |
| uint32_t abs_qcoeff = 0; |
| const int rc = scan[i]; |
| const int coeff = coeff_ptr[rc]; |
| #if CONFIG_AOM_QM |
| const qm_val_t wt = qm_ptr[rc]; |
| const qm_val_t iwt = iqm_ptr[rc]; |
| const int dequant = |
| (dequant_ptr[rc != 0] * iwt + (1 << (AOM_QM_BITS - 1))) >> |
| AOM_QM_BITS; |
| #endif |
| const int coeff_sign = (coeff >> 31); |
| const int abs_coeff = (coeff ^ coeff_sign) - coeff_sign; |
| #if CONFIG_AOM_QM |
| if (abs_coeff * wt >= (dequant_ptr[rc != 0] << (AOM_QM_BITS - 2))) { |
| #else |
| if (abs_coeff >= (dequant_ptr[rc != 0] >> 2)) { |
| #endif |
| const int64_t tmp = |
| abs_coeff + ROUND_POWER_OF_TWO(round_ptr[rc != 0], 1); |
| #if CONFIG_AOM_QM |
| abs_qcoeff = |
| (uint32_t)((tmp * wt * quant_ptr[rc != 0]) >> (AOM_QM_BITS + 15)); |
| qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant) / 2; |
| #else |
| abs_qcoeff = (uint32_t)((tmp * quant_ptr[rc != 0]) >> 15); |
| qcoeff_ptr[rc] = (tran_low_t)((abs_qcoeff ^ coeff_sign) - coeff_sign); |
| dqcoeff_ptr[rc] = (qcoeff_ptr[rc] * dequant_ptr[rc != 0]) / 2; |
| #endif |
| } |
| |
| if (abs_qcoeff) eob = i; |
| } |
| } |
| *eob_ptr = eob + 1; |
| } |
| #endif |
| |
| void av1_regular_quantize_b_4x4(MACROBLOCK *x, int plane, int block, |
| const int16_t *scan, const int16_t *iscan) { |
| MACROBLOCKD *const xd = &x->e_mbd; |
| struct macroblock_plane *p = &x->plane[plane]; |
| struct macroblockd_plane *pd = &xd->plane[plane]; |
| #if CONFIG_AOM_QM |
| int seg_id = xd->mi[0]->mbmi.segment_id; |
| int is_intra = is_inter_block(&xd->mi[0]->mbmi); |
| const qm_val_t *qmatrix = pd->seg_qmatrix[seg_id][is_intra][0]; |
| const qm_val_t *iqmatrix = pd->seg_iqmatrix[seg_id][is_intra][0]; |
| #endif |
| |
| #if CONFIG_AOM_HIGHBITDEPTH |
| if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) { |
| aom_highbd_quantize_b(BLOCK_OFFSET(p->coeff, block), 16, x->skip_block, |
| p->zbin, p->round, p->quant, p->quant_shift, |
| BLOCK_OFFSET(p->qcoeff, block), |
| BLOCK_OFFSET(pd->dqcoeff, block), pd->dequant, |
| #if !CONFIG_AOM_QM |
| &p->eobs[block], scan, iscan); |
| #else |
| &p->eobs[block], scan, iscan, qmatrix, iqmatrix); |
| #endif |
| return; |
| } |
| #endif |
| aom_quantize_b(BLOCK_OFFSET(p->coeff, block), 16, x->skip_block, p->zbin, |
| p->round, p->quant, p->quant_shift, |
| BLOCK_OFFSET(p->qcoeff, block), |
| BLOCK_OFFSET(pd->dqcoeff, block), pd->dequant, &p->eobs[block], |
| #if !CONFIG_AOM_QM |
| scan, iscan); |
| #else |
| scan, iscan, qmatrix, iqmatrix); |
| #endif |
| } |
| |
| static void invert_quant(int16_t *quant, int16_t *shift, int d) { |
| uint32_t t; |
| int l, m; |
| t = d; |
| for (l = 0; t > 1; l++) t >>= 1; |
| m = 1 + (1 << (16 + l)) / d; |
| *quant = (int16_t)(m - (1 << 16)); |
| *shift = 1 << (16 - l); |
| } |
| |
| static int get_qzbin_factor(int q, aom_bit_depth_t bit_depth) { |
| const int quant = av1_dc_quant(q, 0, bit_depth); |
| #if CONFIG_AOM_HIGHBITDEPTH |
| switch (bit_depth) { |
| case AOM_BITS_8: return q == 0 ? 64 : (quant < 148 ? 84 : 80); |
| case AOM_BITS_10: return q == 0 ? 64 : (quant < 592 ? 84 : 80); |
| case AOM_BITS_12: return q == 0 ? 64 : (quant < 2368 ? 84 : 80); |
| default: |
| assert(0 && "bit_depth should be AOM_BITS_8, AOM_BITS_10 or AOM_BITS_12"); |
| return -1; |
| } |
| #else |
| (void)bit_depth; |
| return q == 0 ? 64 : (quant < 148 ? 84 : 80); |
| #endif |
| } |
| |
| void av1_init_quantizer(AV1_COMP *cpi) { |
| AV1_COMMON *const cm = &cpi->common; |
| QUANTS *const quants = &cpi->quants; |
| int i, q, quant; |
| |
| for (q = 0; q < QINDEX_RANGE; q++) { |
| const int qzbin_factor = get_qzbin_factor(q, cm->bit_depth); |
| const int qrounding_factor = q == 0 ? 64 : 48; |
| |
| for (i = 0; i < 2; ++i) { |
| int qrounding_factor_fp = i == 0 ? 48 : 42; |
| if (q == 0) qrounding_factor_fp = 64; |
| |
| // y |
| quant = i == 0 ? av1_dc_quant(q, cm->y_dc_delta_q, cm->bit_depth) |
| : av1_ac_quant(q, 0, cm->bit_depth); |
| invert_quant(&quants->y_quant[q][i], &quants->y_quant_shift[q][i], quant); |
| quants->y_quant_fp[q][i] = (1 << 16) / quant; |
| quants->y_round_fp[q][i] = (qrounding_factor_fp * quant) >> 7; |
| quants->y_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7); |
| quants->y_round[q][i] = (qrounding_factor * quant) >> 7; |
| cpi->y_dequant[q][i] = quant; |
| |
| // uv |
| quant = i == 0 ? av1_dc_quant(q, cm->uv_dc_delta_q, cm->bit_depth) |
| : av1_ac_quant(q, cm->uv_ac_delta_q, cm->bit_depth); |
| invert_quant(&quants->uv_quant[q][i], &quants->uv_quant_shift[q][i], |
| quant); |
| quants->uv_quant_fp[q][i] = (1 << 16) / quant; |
| quants->uv_round_fp[q][i] = (qrounding_factor_fp * quant) >> 7; |
| quants->uv_zbin[q][i] = ROUND_POWER_OF_TWO(qzbin_factor * quant, 7); |
| quants->uv_round[q][i] = (qrounding_factor * quant) >> 7; |
| cpi->uv_dequant[q][i] = quant; |
| } |
| |
| for (i = 2; i < 8; i++) { |
| quants->y_quant[q][i] = quants->y_quant[q][1]; |
| quants->y_quant_fp[q][i] = quants->y_quant_fp[q][1]; |
| quants->y_round_fp[q][i] = quants->y_round_fp[q][1]; |
| quants->y_quant_shift[q][i] = quants->y_quant_shift[q][1]; |
| quants->y_zbin[q][i] = quants->y_zbin[q][1]; |
| quants->y_round[q][i] = quants->y_round[q][1]; |
| cpi->y_dequant[q][i] = cpi->y_dequant[q][1]; |
| |
| quants->uv_quant[q][i] = quants->uv_quant[q][1]; |
| quants->uv_quant_fp[q][i] = quants->uv_quant_fp[q][1]; |
| quants->uv_round_fp[q][i] = quants->uv_round_fp[q][1]; |
| quants->uv_quant_shift[q][i] = quants->uv_quant_shift[q][1]; |
| quants->uv_zbin[q][i] = quants->uv_zbin[q][1]; |
| quants->uv_round[q][i] = quants->uv_round[q][1]; |
| cpi->uv_dequant[q][i] = cpi->uv_dequant[q][1]; |
| } |
| } |
| } |
| |
| void av1_init_plane_quantizers(AV1_COMP *cpi, MACROBLOCK *x) { |
| const AV1_COMMON *const cm = &cpi->common; |
| MACROBLOCKD *const xd = &x->e_mbd; |
| QUANTS *const quants = &cpi->quants; |
| const int segment_id = xd->mi[0]->mbmi.segment_id; |
| const int qindex = av1_get_qindex(&cm->seg, segment_id, cm->base_qindex); |
| const int rdmult = av1_compute_rd_mult(cpi, qindex + cm->y_dc_delta_q); |
| int i; |
| #if CONFIG_AOM_QM |
| int minqm = cm->min_qmlevel; |
| int maxqm = cm->max_qmlevel; |
| // Quant matrix only depends on the base QP so there is only one set per frame |
| int qmlevel = (xd->lossless[segment_id] || cm->using_qmatrix == 0) |
| ? NUM_QM_LEVELS - 1 |
| : aom_get_qmlevel(cm->base_qindex, minqm, maxqm); |
| #endif |
| |
| // Y |
| x->plane[0].quant = quants->y_quant[qindex]; |
| x->plane[0].quant_fp = quants->y_quant_fp[qindex]; |
| x->plane[0].round_fp = quants->y_round_fp[qindex]; |
| x->plane[0].quant_shift = quants->y_quant_shift[qindex]; |
| x->plane[0].zbin = quants->y_zbin[qindex]; |
| x->plane[0].round = quants->y_round[qindex]; |
| #if CONFIG_AOM_QM |
| memcpy(&xd->plane[0].seg_qmatrix[segment_id], cm->gqmatrix[qmlevel][0], |
| sizeof(cm->gqmatrix[qmlevel][0])); |
| memcpy(&xd->plane[0].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][0], |
| sizeof(cm->giqmatrix[qmlevel][0])); |
| #endif |
| xd->plane[0].dequant = cpi->y_dequant[qindex]; |
| |
| x->plane[0].quant_thred[0] = x->plane[0].zbin[0] * x->plane[0].zbin[0]; |
| x->plane[0].quant_thred[1] = x->plane[0].zbin[1] * x->plane[0].zbin[1]; |
| |
| // UV |
| for (i = 1; i < 3; i++) { |
| x->plane[i].quant = quants->uv_quant[qindex]; |
| x->plane[i].quant_fp = quants->uv_quant_fp[qindex]; |
| x->plane[i].round_fp = quants->uv_round_fp[qindex]; |
| x->plane[i].quant_shift = quants->uv_quant_shift[qindex]; |
| x->plane[i].zbin = quants->uv_zbin[qindex]; |
| x->plane[i].round = quants->uv_round[qindex]; |
| #if CONFIG_AOM_QM |
| memcpy(&xd->plane[i].seg_qmatrix[segment_id], cm->gqmatrix[qmlevel][1], |
| sizeof(cm->gqmatrix[qmlevel][1])); |
| memcpy(&xd->plane[i].seg_iqmatrix[segment_id], cm->giqmatrix[qmlevel][1], |
| sizeof(cm->giqmatrix[qmlevel][1])); |
| #endif |
| xd->plane[i].dequant = cpi->uv_dequant[qindex]; |
| |
| x->plane[i].quant_thred[0] = x->plane[i].zbin[0] * x->plane[i].zbin[0]; |
| x->plane[i].quant_thred[1] = x->plane[i].zbin[1] * x->plane[i].zbin[1]; |
| } |
| |
| x->skip_block = segfeature_active(&cm->seg, segment_id, SEG_LVL_SKIP); |
| x->q_index = qindex; |
| |
| set_error_per_bit(x, rdmult); |
| |
| av1_initialize_me_consts(cpi, x, x->q_index); |
| } |
| |
| void av1_frame_init_quantizer(AV1_COMP *cpi) { |
| av1_init_plane_quantizers(cpi, &cpi->td.mb); |
| } |
| |
| void av1_set_quantizer(AV1_COMMON *cm, int q) { |
| // quantizer has to be reinitialized with av1_init_quantizer() if any |
| // delta_q changes. |
| cm->base_qindex = q; |
| cm->y_dc_delta_q = 0; |
| cm->uv_dc_delta_q = 0; |
| cm->uv_ac_delta_q = 0; |
| } |
| |
| // Table that converts 0-63 Q-range values passed in outside to the Qindex |
| // range used internally. |
| static const int quantizer_to_qindex[] = { |
| 0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, |
| 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 100, |
| 104, 108, 112, 116, 120, 124, 128, 132, 136, 140, 144, 148, 152, |
| 156, 160, 164, 168, 172, 176, 180, 184, 188, 192, 196, 200, 204, |
| 208, 212, 216, 220, 224, 228, 232, 236, 240, 244, 249, 255, |
| }; |
| |
| int av1_quantizer_to_qindex(int quantizer) { |
| return quantizer_to_qindex[quantizer]; |
| } |
| |
| int av1_qindex_to_quantizer(int qindex) { |
| int quantizer; |
| |
| for (quantizer = 0; quantizer < 64; ++quantizer) |
| if (quantizer_to_qindex[quantizer] >= qindex) return quantizer; |
| |
| return 63; |
| } |
