426 lines
15 KiB
C
426 lines
15 KiB
C
/******************************************************************************
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* *
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* Copyright (C) 2023 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#include <string.h>
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#include <math.h>
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#include "ixheaac_type_def.h"
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#include "ixheaac_constants.h"
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#include "ixheaace_aac_constants.h"
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#include "ixheaac_basic_ops32.h"
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#include "ixheaac_basic_ops16.h"
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#include "ixheaac_basic_ops40.h"
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#include "ixheaac_error_standards.h"
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#include "ixheaace_error_codes.h"
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#include "ixheaace_bitbuffer.h"
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#include "iusace_esbr_pvc.h"
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#include "ixheaace_common_utils.h"
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#include "ixheaace_sbr_cmondata.h"
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IA_ERRORCODE ixheaace_pvc_enc_init(ixheaace_pvc_enc *pstr_pvc_enc, WORD32 sbr_pvc_rate) {
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pstr_pvc_enc->pvc_prv_param.pvc_flag = IXHEAACE_ESBR_PVC_FLAG_PREV_DFLT;
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pstr_pvc_enc->pvc_prv_param.pvc_id = IXHEAACE_ESBR_PVC_ID_PREV_DFLT;
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pstr_pvc_enc->pvc_prv_param.pvc_rate = IXHEAACE_ESBR_PVC_RATE_PREV_DFLT;
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pstr_pvc_enc->pvc_prv_param.start_band = IXHEAACE_ESBR_PVC_STRT_BAND_PREV_DFLT;
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pstr_pvc_enc->pvc_param.pvc_rate = (UWORD8)sbr_pvc_rate;
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return IA_NO_ERROR;
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}
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static VOID ixheaace_pvc_sb_grouping(ixheaace_pvc_enc *pstr_pvc_enc, UWORD8 start_band,
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FLOAT32 *ptr_qmf_low, FLOAT32 *ptr_sb_grp_energy,
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WORD32 first_pvc_ts) {
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WORD32 ksg, ts, band;
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FLOAT32 tmp_sb_grp_energy;
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WORD32 lbw, sb;
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WORD32 nqmf_lb;
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FLOAT32 *ptr_tmp_qmfl;
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ixheaace_pvc_params *pstr_params = &pstr_pvc_enc->pvc_param;
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ixheaace_pvc_prv_frm_params *pstr_prv_params = &pstr_pvc_enc->pvc_prv_param;
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nqmf_lb = IXHEAACE_ESBR_PVC_NUM_QMF_BANDS / pstr_params->pvc_rate;
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lbw = 8 / pstr_params->pvc_rate;
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for (ts = 0; ts < IXHEAACE_ESBR_PVC_NUM_TS; ts++) {
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sb = start_band - lbw * pstr_params->num_grp_core;
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ksg = 0;
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while (ksg < pstr_params->num_grp_core) {
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tmp_sb_grp_energy = 0.0f;
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if (sb >= 0) {
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ptr_tmp_qmfl = &ptr_qmf_low[ts * nqmf_lb + sb];
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band = 0;
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while (band < lbw) {
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tmp_sb_grp_energy += ptr_tmp_qmfl[band];
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band++;
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}
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tmp_sb_grp_energy /= lbw;
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}
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tmp_sb_grp_energy = max(IXHEAACE_ESBR_PVC_POW_THRS, tmp_sb_grp_energy);
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ptr_sb_grp_energy[(ts + IXHEAACE_ESBR_PVC_NUM_TS - 1) * 3 + ksg] =
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10 * (FLOAT32)log10(tmp_sb_grp_energy);
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sb += lbw;
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ksg++;
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}
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}
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if ((pstr_prv_params->pvc_flag == 0) ||
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((start_band * pstr_params->pvc_rate) !=
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(pstr_prv_params->start_band * pstr_prv_params->pvc_rate))) {
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for (ts = 0; ts < IXHEAACE_ESBR_PVC_NUM_TS - 1 + first_pvc_ts; ts++) {
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memcpy(&ptr_sb_grp_energy[ts * 3],
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&ptr_sb_grp_energy[(IXHEAACE_ESBR_PVC_NUM_TS - 1 + first_pvc_ts) * 3],
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pstr_params->num_grp_core * sizeof(ptr_sb_grp_energy[0]));
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}
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}
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return;
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}
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static IA_ERRORCODE ixheaace_set_pvc_mode_param(ixheaace_pvc_params *pstr_pvc_param,
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ixheaace_pvc_coef_tabs *pstr_pvc_tabs) {
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pstr_pvc_param->num_grp_core = IXHEAACE_ESBR_PVC_NUM_BANDS_CORE;
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pstr_pvc_param->num_pvc_id = IXHEAACE_ESBR_PVC_NUM_PVCID;
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switch (pstr_pvc_param->pvc_mode) {
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case IXHEAACE_ESBR_PVC_MODE_1:
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pstr_pvc_param->num_grp_sbr = IXHEAACE_ESBR_PVC_NUM_BANDS_SBR_MODE1;
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pstr_pvc_param->hbw = 8 / pstr_pvc_param->pvc_rate;
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pstr_pvc_tabs->pvc_pred_coef_kb_012 =
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(UWORD8 *)ixheaace_pvc_tabs.pvc_prd_coef_kb_012_mode_1;
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pstr_pvc_tabs->pvc_pred_coef_kb_3 = (UWORD8 *)ixheaace_pvc_tabs.pvc_prd_coef_kb_3_mode_1;
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pstr_pvc_tabs->pvc_idx_tab = ixheaace_pvc_tabs.pvc_idx_mode_1;
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pstr_pvc_tabs->scaling_coef = ixheaace_pvc_tabs.pvc_scaling_coef_mode_1;
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break;
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case IXHEAACE_ESBR_PVC_MODE_2:
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pstr_pvc_param->num_grp_sbr = IXHEAACE_ESBR_PVC_NUM_BANDS_SBR_MODE2;
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pstr_pvc_param->hbw = 12 / pstr_pvc_param->pvc_rate;
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pstr_pvc_tabs->pvc_pred_coef_kb_012 =
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(UWORD8 *)ixheaace_pvc_tabs.pvc_prd_coef_kb_012_mode_2;
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pstr_pvc_tabs->pvc_pred_coef_kb_3 = (UWORD8 *)ixheaace_pvc_tabs.pvc_prd_coef_kb_3_mode_2;
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pstr_pvc_tabs->pvc_idx_tab = ixheaace_pvc_tabs.pvc_idx_mode_2;
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pstr_pvc_tabs->scaling_coef = ixheaace_pvc_tabs.pvc_scaling_coef_mode_2;
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break;
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default:
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return IA_EXHEAACE_EXE_NONFATAL_ESBR_INVALID_PVC_MODE;
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}
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return IA_NO_ERROR;
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}
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static VOID ixheaace_pvc_sb_grouping_ref(ixheaace_pvc_params *pstr_pvc_param, UWORD8 start_band,
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UWORD8 stop_band, FLOAT32 *ptr_qmf_high,
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FLOAT32 *ptr_sb_grp_energy) {
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WORD32 ksg, ts, band;
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UWORD8 min_sb;
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WORD32 sb, eb;
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FLOAT32 tmp_sb_grp_energy;
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min_sb = start_band + pstr_pvc_param->num_grp_sbr * pstr_pvc_param->hbw - 1;
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stop_band = max(stop_band, min_sb);
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for (ts = 0; ts < IXHEAACE_ESBR_PVC_NUM_TS; ts++) {
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sb = start_band;
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eb = min((sb + pstr_pvc_param->hbw - 1), (IXHEAACE_ESBR_PVC_NUM_QMF_BANDS - 1));
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for (ksg = 0; ksg < (pstr_pvc_param->num_grp_sbr - 2); ksg++) {
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tmp_sb_grp_energy = 0.0f;
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band = sb;
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while (band <= eb) {
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tmp_sb_grp_energy += ptr_qmf_high[ts * IXHEAACE_ESBR_PVC_NUM_QMF_BANDS + band];
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band++;
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}
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tmp_sb_grp_energy = tmp_sb_grp_energy / (eb - sb + 1);
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ptr_sb_grp_energy[ts * pstr_pvc_param->num_grp_sbr + ksg] =
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max(IXHEAACE_ESBR_PVC_POW_THRS, tmp_sb_grp_energy);
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sb += pstr_pvc_param->hbw;
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eb = min((sb + pstr_pvc_param->hbw - 1), stop_band);
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eb = min(eb, (IXHEAACE_ESBR_PVC_NUM_QMF_BANDS - 1));
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}
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while (ksg < pstr_pvc_param->num_grp_sbr) {
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tmp_sb_grp_energy = 0.0f;
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band = sb;
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while (band <= eb) {
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tmp_sb_grp_energy += ptr_qmf_high[ts * IXHEAACE_ESBR_PVC_NUM_QMF_BANDS + band];
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band++;
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}
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tmp_sb_grp_energy = tmp_sb_grp_energy / (eb - sb + 1);
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ptr_sb_grp_energy[ts * pstr_pvc_param->num_grp_sbr + ksg] =
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max(IXHEAACE_ESBR_PVC_POW_THRS, tmp_sb_grp_energy);
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sb += pstr_pvc_param->hbw;
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eb = min(stop_band, (IXHEAACE_ESBR_PVC_NUM_QMF_BANDS - 1));
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ksg++;
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}
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}
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return;
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}
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static VOID ixheaace_pvc_calc_grp_energy_below_sbr(ixheaace_pvc_enc *pstr_pvc_enc, WORD32 ts,
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FLOAT32 *ptr_sb_grp_ene_blsbr) {
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WORD32 ksg = 0, idx;
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ixheaace_pvc_params *pstr_pvc_params = &pstr_pvc_enc->pvc_param;
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memset(ptr_sb_grp_ene_blsbr, 0,
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pstr_pvc_params->num_grp_core * sizeof(ptr_sb_grp_ene_blsbr[0]));
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while (ksg < pstr_pvc_params->num_grp_core) {
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for (idx = 0; idx < pstr_pvc_params->time_smth_ts; idx++) {
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ptr_sb_grp_ene_blsbr[ksg] +=
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pstr_pvc_enc->sb_grp_energy[ts + IXHEAACE_ESBR_PVC_NUM_TS - 1 - idx][ksg] *
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pstr_pvc_enc->pvc_tabs.smoothing_coef[idx];
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}
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ksg++;
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}
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return;
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}
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static VOID ixheaace_pvc_predict(ixheaace_pvc_enc *pstr_pvc_enc, WORD32 ts,
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FLOAT32 *ptr_sb_grp_ene_blsbr, FLOAT32 *ptr_sb_grp_energy_high) {
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ixheaace_pvc_params *pstr_pvc_params = &(pstr_pvc_enc->pvc_param);
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ixheaace_pvc_coef_tabs *pstr_pvc_tabs = &(pstr_pvc_enc->pvc_tabs);
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WORD32 ksg, kb, idx_tab_1, idx_tab_2;
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const UWORD8 *ptr_tab;
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FLOAT32 prod;
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idx_tab_2 = pstr_pvc_params->pvc_id[ts];
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if (idx_tab_2 < pstr_pvc_tabs->pvc_idx_tab[0]) {
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idx_tab_1 = 0;
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} else if (idx_tab_2 < pstr_pvc_tabs->pvc_idx_tab[1]) {
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idx_tab_1 = 1;
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} else {
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idx_tab_1 = 2;
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}
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memset(ptr_sb_grp_energy_high, 0,
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pstr_pvc_params->num_grp_sbr * sizeof(ptr_sb_grp_energy_high[0]));
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ptr_tab = &(pstr_pvc_tabs->pvc_pred_coef_kb_012[idx_tab_1 * pstr_pvc_params->num_grp_core *
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pstr_pvc_params->num_grp_sbr]);
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for (kb = 0; kb < pstr_pvc_params->num_grp_core; kb++) {
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prod = pstr_pvc_tabs->scaling_coef[kb] * ptr_sb_grp_ene_blsbr[kb];
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for (ksg = 0; ksg < pstr_pvc_params->num_grp_sbr; ksg++) {
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ptr_sb_grp_energy_high[ksg] += ((FLOAT32)(WORD8)(*(ptr_tab++)) * prod);
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}
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}
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ptr_tab = &(pstr_pvc_tabs->pvc_pred_coef_kb_3[idx_tab_2 * pstr_pvc_params->num_grp_sbr]);
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prod = pstr_pvc_tabs->scaling_coef[pstr_pvc_params->num_grp_core];
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for (ksg = 0; ksg < pstr_pvc_params->num_grp_sbr; ksg++) {
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ptr_sb_grp_energy_high[ksg] += (FLOAT32)(WORD8)(*(ptr_tab++)) * prod;
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}
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return;
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}
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static VOID ixheaace_pvc_packing(ixheaace_pvc_enc *pstr_pvc_enc, WORD32 const usac_indep_flag) {
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UWORD16 *ptr_pvc_bs;
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ixheaace_pvc_params *pstr_params = &pstr_pvc_enc->pvc_param;
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ixheaace_pvc_prv_frm_params *pstr_prv_params = &pstr_pvc_enc->pvc_prv_param;
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ixheaace_pvc_bs_info *pstr_pvc_bs_info = &pstr_pvc_enc->pvc_bs_info;
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ptr_pvc_bs = pstr_pvc_bs_info->pvc_id_bs;
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pstr_pvc_bs_info->ns_mode = pstr_params->ns_mode;
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if ((usac_indep_flag == 1) || (pstr_params->pvc_id[1] != pstr_prv_params->pvc_id)) {
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pstr_pvc_bs_info->grid_info[0] = 1;
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*(ptr_pvc_bs++) = pstr_params->pvc_id[0];
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} else {
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pstr_pvc_bs_info->grid_info[0] = 0;
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}
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if (pstr_params->pvc_id[8] == pstr_params->pvc_id[7]) {
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pstr_pvc_bs_info->div_mode = 0;
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} else {
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pstr_pvc_bs_info->div_mode = 4;
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pstr_pvc_bs_info->num_grid_info = 2;
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pstr_pvc_bs_info->grid_info[1] = 1;
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*(ptr_pvc_bs++) = pstr_params->pvc_id[8];
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}
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return;
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}
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static FLOAT32 ixheaace_pvc_calc_res(FLOAT32 *ptr_org, FLOAT32 *ptr_prd, UWORD8 ng_sb_sbr) {
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FLOAT32 residual = 0, diff;
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WORD32 band = 0;
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while (band < ng_sb_sbr) {
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diff = ptr_org[band] - ptr_prd[band];
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residual += diff * diff;
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band++;
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}
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residual = (FLOAT32)sqrt(residual);
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return residual;
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}
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VOID ixheaace_pvc_calc_grp_energy(ixheaace_pvc_enc *pstr_pvc_enc,
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FLOAT32 *ptr_sb_grp_energy_hi_ref) {
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WORD32 ts, res_init_flg = 1, pvc_id, i;
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FLOAT32 res_all[128] = {0}, res_min, sb_grp_energy_blwsbr[3], sb_grp_energy_hi[8], res = 0;
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UWORD16 *ptr_pvc_id, tmp = 0;
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ptr_pvc_id = pstr_pvc_enc->pvc_param.pvc_id;
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for (ts = 0; ts < IXHEAACE_ESBR_PVC_NUM_TS; ts++) {
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ixheaace_pvc_calc_grp_energy_below_sbr(pstr_pvc_enc, ts, sb_grp_energy_blwsbr);
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for (pvc_id = 0; pvc_id < pstr_pvc_enc->pvc_param.num_pvc_id; pvc_id++) {
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pstr_pvc_enc->pvc_param.pvc_id[ts] = (UWORD16)pvc_id;
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ixheaace_pvc_predict(pstr_pvc_enc, ts, sb_grp_energy_blwsbr, sb_grp_energy_hi);
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res = ixheaace_pvc_calc_res(
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&(ptr_sb_grp_energy_hi_ref[ts * pstr_pvc_enc->pvc_param.num_grp_sbr]), sb_grp_energy_hi,
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pstr_pvc_enc->pvc_param.num_grp_sbr);
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if (res_init_flg) {
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res_all[pvc_id] = res;
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} else {
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res_all[pvc_id] += res;
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}
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}
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res_init_flg = 0;
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if ((ts & (IXHEAACE_ESBR_PVC_NTS_GRP_ID - 1)) == (IXHEAACE_ESBR_PVC_NTS_GRP_ID - 1)) {
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res_min = IXHEAACE_ESBR_PVC_RESIDUAL_VAL;
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pvc_id = 0;
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while (pvc_id < pstr_pvc_enc->pvc_param.num_pvc_id) {
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if (res_all[pvc_id] < res_min) {
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tmp = (UWORD16)pvc_id;
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res_min = res_all[pvc_id];
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}
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pvc_id++;
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}
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for (i = 0; i < IXHEAACE_ESBR_PVC_NTS_GRP_ID; i++) {
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*(ptr_pvc_id++) = tmp;
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}
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res_init_flg = 1;
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}
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}
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for (ts = 0; ts < 15; ts++) {
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memcpy(&pstr_pvc_enc->sb_grp_energy[ts][0],
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&pstr_pvc_enc->sb_grp_energy[ts + IXHEAACE_ESBR_PVC_NUM_TS][0],
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IXHEAACE_ESBR_PVC_NUM_BANDS_CORE * sizeof(pstr_pvc_enc->sb_grp_energy[ts][0]));
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}
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}
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VOID ixheaace_pvc_calc_ref_ene_update_tabs(ixheaace_pvc_enc *pstr_pvc_enc,
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FLOAT32 *ptr_sb_grp_energy_hi_ref) {
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WORD32 ts, band;
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FLOAT32 sum, prev_sum = 0;
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pstr_pvc_enc->pvc_param.ns_mode = 0;
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switch (pstr_pvc_enc->pvc_param.pvc_mode) {
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case 1: {
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pstr_pvc_enc->pvc_param.time_smth_ts = IXHEAACE_ESBR_PVC_NUM_TS;
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pstr_pvc_enc->pvc_tabs.smoothing_coef = ixheaace_pvc_tabs.pvc_smth_win_ns_16;
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break;
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}
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case 2: {
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pstr_pvc_enc->pvc_param.time_smth_ts = 12;
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pstr_pvc_enc->pvc_tabs.smoothing_coef = ixheaace_pvc_tabs.pvc_smth_win_ns_12;
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break;
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}
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default: {
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// No assignment
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break;
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}
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}
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for (ts = 0; ts < IXHEAACE_ESBR_PVC_NUM_TS; ts++) {
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FLOAT32 *ptr_grp_energy =
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&(ptr_sb_grp_energy_hi_ref[ts * pstr_pvc_enc->pvc_param.num_grp_sbr]);
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sum = 0.0f;
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for (band = 0; band < pstr_pvc_enc->pvc_param.num_grp_sbr; band++) {
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sum += *ptr_grp_energy;
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*ptr_grp_energy = 10 * (FLOAT32)log10(*ptr_grp_energy);
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ptr_grp_energy++;
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}
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if (ts && (sum > prev_sum * IXHEAACE_ESBR_PVC_NS_MODE_PRD_THRS)) {
|
|
pstr_pvc_enc->pvc_param.ns_mode = 1;
|
|
}
|
|
prev_sum = sum;
|
|
}
|
|
|
|
if (pstr_pvc_enc->pvc_param.ns_mode == 1) {
|
|
switch (pstr_pvc_enc->pvc_param.pvc_mode) {
|
|
case 1: {
|
|
pstr_pvc_enc->pvc_param.time_smth_ts = 4;
|
|
pstr_pvc_enc->pvc_tabs.smoothing_coef = ixheaace_pvc_tabs.pvc_smth_win_ns_4;
|
|
break;
|
|
}
|
|
case 2: {
|
|
pstr_pvc_enc->pvc_param.time_smth_ts = 3;
|
|
pstr_pvc_enc->pvc_tabs.smoothing_coef = ixheaace_pvc_tabs.pvc_smth_win_ns_3;
|
|
break;
|
|
}
|
|
default: {
|
|
// No assignment
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
IA_ERRORCODE ixheaace_pvc_encode_frame(ixheaace_pvc_enc *pstr_pvc_enc, UWORD8 pvc_mode,
|
|
FLOAT32 *ptr_qmf_low, FLOAT32 *ptr_qmf_high,
|
|
UWORD8 start_band, UWORD8 stop_band) {
|
|
IA_ERRORCODE ret;
|
|
FLOAT32 sb_grp_energy_hi_ref[IXHEAACE_ESBR_PVC_NUM_TS * 8];
|
|
|
|
pstr_pvc_enc->pvc_param.pvc_mode = pvc_mode;
|
|
/* PVC encoding process */
|
|
if (pstr_pvc_enc->pvc_param.pvc_mode) {
|
|
ret = ixheaace_set_pvc_mode_param(&(pstr_pvc_enc->pvc_param), &(pstr_pvc_enc->pvc_tabs));
|
|
if (IA_NO_ERROR != ret) {
|
|
return ret;
|
|
}
|
|
|
|
ixheaace_pvc_sb_grouping(pstr_pvc_enc, start_band, ptr_qmf_low,
|
|
(FLOAT32 *)pstr_pvc_enc->sb_grp_energy, 0);
|
|
|
|
ixheaace_pvc_sb_grouping_ref(&(pstr_pvc_enc->pvc_param), start_band, stop_band, ptr_qmf_high,
|
|
sb_grp_energy_hi_ref);
|
|
ixheaace_pvc_calc_ref_ene_update_tabs(pstr_pvc_enc, sb_grp_energy_hi_ref);
|
|
|
|
ixheaace_pvc_calc_grp_energy(pstr_pvc_enc, sb_grp_energy_hi_ref);
|
|
|
|
ixheaace_pvc_packing(pstr_pvc_enc, pstr_pvc_enc->pvc_param.usac_indep_flag);
|
|
}
|
|
|
|
pstr_pvc_enc->pvc_prv_param.pvc_id =
|
|
(pstr_pvc_enc->pvc_param.pvc_mode == 0)
|
|
? 0xFF
|
|
: pstr_pvc_enc->pvc_param.pvc_id[IXHEAACE_ESBR_PVC_NUM_TS - 1];
|
|
pstr_pvc_enc->pvc_prv_param.start_band = start_band;
|
|
pstr_pvc_enc->pvc_prv_param.pvc_flag = (pstr_pvc_enc->pvc_param.pvc_mode == 0) ? 0 : 1;
|
|
pstr_pvc_enc->pvc_prv_param.pvc_rate = pstr_pvc_enc->pvc_param.pvc_rate;
|
|
|
|
return IA_NO_ERROR;
|
|
}
|