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567 lines
18 KiB
567 lines
18 KiB
/******************************************************************************
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* *
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* Copyright (C) 2018 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 <math.h>
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#include <stdio.h>
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#include <string.h>
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#include "ixheaacd_type_def.h"
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#include "ixheaacd_acelp_com.h"
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#include "ixheaacd_windows.h"
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#include "ixheaacd_vec_baisc_ops.h"
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#include "ixheaacd_bitbuffer.h"
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#include "ixheaacd_interface.h"
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#include "ixheaacd_tns_usac.h"
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#include "ixheaacd_cnst.h"
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#include "ixheaacd_acelp_info.h"
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#include "ixheaacd_sbrdecsettings.h"
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#include "ixheaacd_info.h"
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#include "ixheaacd_sbr_common.h"
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#include "ixheaacd_drc_data_struct.h"
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#include "ixheaacd_drc_dec.h"
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#include "ixheaacd_sbrdecoder.h"
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#include "ixheaacd_mps_polyphase.h"
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#include "ixheaacd_sbr_const.h"
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#include "ixheaacd_main.h"
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#include "ixheaacd_arith_dec.h"
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#include "ixheaacd_bit_extract.h"
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#include "ixheaacd_main.h"
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#include "ixheaacd_func_def.h"
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#include "ixheaacd_constants.h"
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#include "ixheaacd_basic_ops32.h"
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#include "ixheaacd_basic_ops40.h"
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#include "ixheaacd_error_standards.h"
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WORD32 ixheaacd_get_mode_lpc(WORD32 lpc_set, ia_bit_buf_struct *it_bit_buff,
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WORD32 *nk_mode) {
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WORD32 mode_lpc = 0;
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switch (lpc_set) {
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case 4:
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mode_lpc = 0;
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break;
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case 0:
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case 2:
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mode_lpc = ixheaacd_read_bits_buf(it_bit_buff, 1);
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if (mode_lpc == 1) *nk_mode = 3;
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break;
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case 1:
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if (ixheaacd_read_bits_buf(it_bit_buff, 1) == 0)
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mode_lpc = *nk_mode = 2;
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else {
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if (ixheaacd_read_bits_buf(it_bit_buff, 1) == 0)
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mode_lpc = *nk_mode = 0;
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else
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mode_lpc = *nk_mode = 1;
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}
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break;
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case 3:
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if (ixheaacd_read_bits_buf(it_bit_buff, 1) == 0)
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mode_lpc = *nk_mode = 1;
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else {
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if (ixheaacd_read_bits_buf(it_bit_buff, 1) == 0)
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mode_lpc = *nk_mode = 0;
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else {
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if (ixheaacd_read_bits_buf(it_bit_buff, 1) == 0)
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mode_lpc = 2;
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else
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mode_lpc = 3;
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*nk_mode = 2;
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}
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}
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break;
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}
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return mode_lpc;
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}
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VOID ixheaacd_qn_data(WORD32 nk_mode, WORD32 *qn,
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ia_bit_buf_struct *it_bit_buff) {
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WORD32 k;
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switch (nk_mode) {
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case 1:
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for (k = 0; k < 2; k++) {
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while (ixheaacd_read_bits_buf(it_bit_buff, 1) == 1) {
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qn[k] += 1;
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}
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if (qn[k] > 0) qn[k] += 1;
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}
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break;
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case 0:
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case 2:
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case 3:
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for (k = 0; k < 2; k++)
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qn[k] = 2 + ixheaacd_read_bits_buf(it_bit_buff, 2);
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if (nk_mode == 2) {
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for (k = 0; k < 2; k++) {
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if (qn[k] > 4) {
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qn[k] = 0;
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while (ixheaacd_read_bits_buf(it_bit_buff, 1) == 1) qn[k] += 1;
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if (qn[k] > 0) qn[k] += 4;
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}
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}
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} else {
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for (k = 0; k < 2; k++) {
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if (qn[k] > 4) {
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WORD32 qn_ext = 0;
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while (ixheaacd_read_bits_buf(it_bit_buff, 1) == 1) qn_ext += 1;
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switch (qn_ext) {
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case 0:
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qn[k] = 5;
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break;
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case 1:
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qn[k] = 6;
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break;
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case 2:
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qn[k] = 0;
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break;
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default:
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qn[k] = qn_ext + 4;
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break;
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}
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}
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}
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}
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break;
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}
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return;
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}
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VOID ixheaacd_code_book_indices(ia_td_frame_data_struct *pstr_td_frame_data,
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WORD32 nk_mode, WORD32 *pos,
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ia_bit_buf_struct *it_bit_buff) {
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WORD32 k, qn[2] = {0, 0}, nk, n, i;
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ixheaacd_qn_data(nk_mode, &qn[0], it_bit_buff);
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pstr_td_frame_data->lpc_first_approx_idx[(*pos)++] = qn[0];
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pstr_td_frame_data->lpc_first_approx_idx[(*pos)++] = qn[1];
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for (k = 0; k < 2; k++) {
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if (qn[k] > 0) {
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if (qn[k] > 4) {
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nk = (qn[k] - 3) / 2;
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n = qn[k] - nk * 2;
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} else {
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nk = 0;
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n = qn[k];
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}
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pstr_td_frame_data->lpc_first_approx_idx[(*pos)++] =
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ixheaacd_read_bits_buf(it_bit_buff, 4 * n);
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for (i = 0; i < 8; i++)
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pstr_td_frame_data->lpc_first_approx_idx[(*pos)++] =
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ixheaacd_read_bits_buf(it_bit_buff, nk);
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}
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}
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return;
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}
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VOID ixheaacd_lpc_data(WORD32 first_lpd_flag, WORD32 mod[],
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ia_td_frame_data_struct *pstr_td_frame_data,
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ia_bit_buf_struct *it_bit_buff) {
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WORD32 mode_lpc, nk_mode = 0, j = 0;
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mode_lpc = ixheaacd_get_mode_lpc(4, it_bit_buff, &nk_mode);
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pstr_td_frame_data->lpc_first_approx_idx[j++] =
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ixheaacd_read_bits_buf(it_bit_buff, 8);
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ixheaacd_code_book_indices(pstr_td_frame_data, nk_mode, &j, it_bit_buff);
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if (first_lpd_flag) {
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mode_lpc = ixheaacd_get_mode_lpc(0, it_bit_buff, &nk_mode);
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pstr_td_frame_data->lpc_first_approx_idx[j++] = mode_lpc;
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if (mode_lpc == 0)
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pstr_td_frame_data->lpc_first_approx_idx[j++] =
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ixheaacd_read_bits_buf(it_bit_buff, 8);
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ixheaacd_code_book_indices(pstr_td_frame_data, nk_mode, &j, it_bit_buff);
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}
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if (mod[0] < 3) {
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mode_lpc = ixheaacd_get_mode_lpc(2, it_bit_buff, &nk_mode);
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pstr_td_frame_data->lpc_first_approx_idx[j++] = mode_lpc;
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if (mode_lpc == 0)
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pstr_td_frame_data->lpc_first_approx_idx[j++] =
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ixheaacd_read_bits_buf(it_bit_buff, 8);
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ixheaacd_code_book_indices(pstr_td_frame_data, nk_mode, &j, it_bit_buff);
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}
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if (mod[0] < 2) {
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mode_lpc = ixheaacd_get_mode_lpc(1, it_bit_buff, &nk_mode);
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pstr_td_frame_data->lpc_first_approx_idx[j++] = mode_lpc;
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if (mode_lpc == 0)
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pstr_td_frame_data->lpc_first_approx_idx[j++] =
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ixheaacd_read_bits_buf(it_bit_buff, 8);
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if (mode_lpc != 1)
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ixheaacd_code_book_indices(pstr_td_frame_data, nk_mode, &j, it_bit_buff);
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}
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if (mod[2] < 2) {
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mode_lpc = ixheaacd_get_mode_lpc(3, it_bit_buff, &nk_mode);
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pstr_td_frame_data->lpc_first_approx_idx[j++] = mode_lpc;
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if (mode_lpc == 0)
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pstr_td_frame_data->lpc_first_approx_idx[j++] =
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ixheaacd_read_bits_buf(it_bit_buff, 8);
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ixheaacd_code_book_indices(pstr_td_frame_data, nk_mode, &j, it_bit_buff);
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}
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return;
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}
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VOID ixheaacd_fac_decoding(WORD32 fac_length, WORD32 k, WORD32 *fac_prm,
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ia_bit_buf_struct *it_bit_buff) {
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WORD32 i, j, n, qn, nk, kv[8];
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long code_book_index;
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for (i = 0; i < fac_length; i += 8) {
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qn = 0;
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while (ixheaacd_read_bits_buf(it_bit_buff, 1) == 1) {
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qn += 1;
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}
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if (qn != 0) qn += 1;
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nk = 0;
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n = qn;
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if (qn > 4) {
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nk = (qn - 3) >> 1;
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n = qn - nk * 2;
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}
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code_book_index = ixheaacd_read_bits_buf(it_bit_buff, 4 * n);
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for (j = 0; j < 8; j++) {
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kv[j] = ixheaacd_read_bits_buf(it_bit_buff, nk);
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}
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ixheaacd_rotated_gosset_mtx_dec(qn, code_book_index, kv,
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&fac_prm[k * FAC_LENGTH + i]);
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}
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}
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const UWORD8 ixheaacd_num_bites_celp_coding[8][4] = {
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{5, 5, 5, 5}, {9, 9, 5, 5}, {9, 9, 9, 9}, {13, 13, 9, 9},
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{13, 13, 13, 13}, {16, 16, 16, 16}, {1, 5, 1, 5}, {1, 5, 5, 5}};
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VOID ixheaacd_acelp_decoding(WORD32 k, ia_usac_data_struct *usac_data,
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ia_td_frame_data_struct *pstr_td_frame_data,
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ia_bit_buf_struct *it_bit_buff, WORD32 chan) {
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WORD32 sfr, kk;
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WORD32 nb_subfr = usac_data->num_subfrm;
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const UWORD8 *ptr_num_bits =
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&ixheaacd_num_bites_celp_coding[pstr_td_frame_data->acelp_core_mode][0];
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chan = 0;
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pstr_td_frame_data->mean_energy[k] = ixheaacd_read_bits_buf(it_bit_buff, 2);
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for (sfr = 0; sfr < nb_subfr; sfr++) {
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kk = k * 4 + sfr;
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if ((sfr == 0) || ((nb_subfr == 4) && (sfr == 2)))
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pstr_td_frame_data->acb_index[kk] =
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ixheaacd_read_bits_buf(it_bit_buff, 9);
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else
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pstr_td_frame_data->acb_index[kk] =
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ixheaacd_read_bits_buf(it_bit_buff, 6);
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pstr_td_frame_data->ltp_filtering_flag[kk] =
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ixheaacd_read_bits_buf(it_bit_buff, 1);
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if (pstr_td_frame_data->acelp_core_mode == 5) {
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pstr_td_frame_data->icb_index[kk][0] =
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ixheaacd_read_bits_buf(it_bit_buff, 2);
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pstr_td_frame_data->icb_index[kk][1] =
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ixheaacd_read_bits_buf(it_bit_buff, 2);
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pstr_td_frame_data->icb_index[kk][2] =
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ixheaacd_read_bits_buf(it_bit_buff, 2);
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pstr_td_frame_data->icb_index[kk][3] =
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ixheaacd_read_bits_buf(it_bit_buff, 2);
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pstr_td_frame_data->icb_index[kk][4] =
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ixheaacd_read_bits_buf(it_bit_buff, 14);
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pstr_td_frame_data->icb_index[kk][5] =
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ixheaacd_read_bits_buf(it_bit_buff, 14);
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pstr_td_frame_data->icb_index[kk][6] =
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ixheaacd_read_bits_buf(it_bit_buff, 14);
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pstr_td_frame_data->icb_index[kk][7] =
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ixheaacd_read_bits_buf(it_bit_buff, 14);
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} else {
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pstr_td_frame_data->icb_index[kk][0] =
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ixheaacd_read_bits_buf(it_bit_buff, ptr_num_bits[0]);
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pstr_td_frame_data->icb_index[kk][1] =
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ixheaacd_read_bits_buf(it_bit_buff, ptr_num_bits[1]);
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pstr_td_frame_data->icb_index[kk][2] =
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ixheaacd_read_bits_buf(it_bit_buff, ptr_num_bits[2]);
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pstr_td_frame_data->icb_index[kk][3] =
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ixheaacd_read_bits_buf(it_bit_buff, ptr_num_bits[3]);
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}
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pstr_td_frame_data->gains[kk] = ixheaacd_read_bits_buf(it_bit_buff, 7);
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}
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}
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IA_ERRORCODE ixheaacd_tcx_coding(ia_usac_data_struct *usac_data, pWORD32 quant,
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WORD32 k, WORD32 first_tcx_flag,
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ia_td_frame_data_struct *pstr_td_frame_data,
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ia_bit_buf_struct *it_bit_buff
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) {
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IA_ERRORCODE err = IA_NO_ERROR;
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pstr_td_frame_data->noise_factor[k] = ixheaacd_read_bits_buf(it_bit_buff, 3);
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pstr_td_frame_data->global_gain[k] = ixheaacd_read_bits_buf(it_bit_buff, 7);
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switch (pstr_td_frame_data->mod[k]) {
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case 1:
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pstr_td_frame_data->tcx_lg[k] = usac_data->len_subfrm;
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break;
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case 2:
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pstr_td_frame_data->tcx_lg[k] = 2 * (usac_data->len_subfrm);
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break;
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case 3:
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pstr_td_frame_data->tcx_lg[k] = 4 * (usac_data->len_subfrm);
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break;
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}
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if (first_tcx_flag) {
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if (usac_data->usac_independency_flg) {
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pstr_td_frame_data->arith_reset_flag = 1;
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} else {
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pstr_td_frame_data->arith_reset_flag =
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ixheaacd_read_bits_buf(it_bit_buff, 1);
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}
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}
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err = ixheaacd_arith_data(pstr_td_frame_data, quant, usac_data, it_bit_buff,
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(first_tcx_flag), k);
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if (err) return err;
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return IA_NO_ERROR;
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}
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WORD32 ixheaacd_lpd_channel_stream(ia_usac_data_struct *usac_data,
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ia_td_frame_data_struct *pstr_td_frame_data,
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ia_bit_buf_struct *it_bit_buff,
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FLOAT32 *synth
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)
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{
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WORD32 lpd_mode, k, cnt, ii;
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WORD32 first_tcx_flag;
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WORD32 *quant;
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WORD32 core_mode_last, fac_data_present;
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WORD32 *fac_data;
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WORD32 first_lpd_flag;
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WORD32 short_fac_flag;
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WORD32 bpf_control_info;
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WORD32 chan = usac_data->present_chan;
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WORD32 last_lpd_mode = usac_data->str_tddec[chan]->mode_prev;
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WORD32 err = 0;
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short_fac_flag = 0;
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pstr_td_frame_data->acelp_core_mode = ixheaacd_read_bits_buf(it_bit_buff, 3);
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lpd_mode = ixheaacd_read_bits_buf(it_bit_buff, 5);
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if (lpd_mode == 25) {
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pstr_td_frame_data->mod[0] = pstr_td_frame_data->mod[1] =
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pstr_td_frame_data->mod[2] = pstr_td_frame_data->mod[3] = 3;
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} else if (lpd_mode == 24) {
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pstr_td_frame_data->mod[0] = pstr_td_frame_data->mod[1] =
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pstr_td_frame_data->mod[2] = pstr_td_frame_data->mod[3] = 2;
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} else {
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if (lpd_mode >= 20) {
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pstr_td_frame_data->mod[0] = lpd_mode & 1;
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pstr_td_frame_data->mod[1] = (lpd_mode >> 1) & 1;
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pstr_td_frame_data->mod[2] = pstr_td_frame_data->mod[3] = 2;
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} else if (lpd_mode >= 16) {
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pstr_td_frame_data->mod[0] = pstr_td_frame_data->mod[1] = 2;
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pstr_td_frame_data->mod[2] = lpd_mode & 1;
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pstr_td_frame_data->mod[3] = (lpd_mode >> 1) & 1;
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} else {
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pstr_td_frame_data->mod[0] = lpd_mode & 1;
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pstr_td_frame_data->mod[1] = (lpd_mode >> 1) & 1;
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pstr_td_frame_data->mod[2] = (lpd_mode >> 2) & 1;
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pstr_td_frame_data->mod[3] = (lpd_mode >> 3) & 1;
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}
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}
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bpf_control_info = ixheaacd_read_bits_buf(it_bit_buff, 1);
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core_mode_last = ixheaacd_read_bits_buf(it_bit_buff, 1);
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fac_data_present = ixheaacd_read_bits_buf(it_bit_buff, 1);
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first_lpd_flag = (core_mode_last == 0) ? 1 : 0;
|
|
|
|
quant = pstr_td_frame_data->x_tcx_invquant;
|
|
first_tcx_flag = 1;
|
|
k = 0;
|
|
while (k < 4) {
|
|
if (k == 0) {
|
|
if ((core_mode_last == 1) && (fac_data_present == 1))
|
|
ixheaacd_fac_decoding((usac_data->len_subfrm) / 2, k,
|
|
pstr_td_frame_data->fac, it_bit_buff);
|
|
} else {
|
|
if (((last_lpd_mode == 0) && (pstr_td_frame_data->mod[k] > 0)) ||
|
|
((last_lpd_mode > 0) && (pstr_td_frame_data->mod[k] == 0)))
|
|
ixheaacd_fac_decoding((usac_data->len_subfrm) / 2, k,
|
|
pstr_td_frame_data->fac, it_bit_buff);
|
|
}
|
|
|
|
if (pstr_td_frame_data->mod[k] == 0) {
|
|
ixheaacd_acelp_decoding(k, usac_data, pstr_td_frame_data, it_bit_buff,
|
|
chan);
|
|
last_lpd_mode = 0;
|
|
pstr_td_frame_data->tcx_lg[k] = 0;
|
|
k += 1;
|
|
} else {
|
|
err = ixheaacd_tcx_coding(usac_data, quant, k, first_tcx_flag,
|
|
pstr_td_frame_data, it_bit_buff);
|
|
if (err) return err;
|
|
last_lpd_mode = pstr_td_frame_data->mod[k];
|
|
quant += pstr_td_frame_data->tcx_lg[k];
|
|
|
|
cnt = 1 << (pstr_td_frame_data->mod[k] - 1);
|
|
|
|
for (ii = 0; ii < cnt - 1; ii++)
|
|
pstr_td_frame_data->tcx_lg[k + 1 + ii] = 0;
|
|
|
|
k += cnt;
|
|
first_tcx_flag = 0;
|
|
}
|
|
}
|
|
|
|
ixheaacd_lpc_data(first_lpd_flag, pstr_td_frame_data->mod, pstr_td_frame_data,
|
|
it_bit_buff);
|
|
|
|
if ((core_mode_last == 0) && (fac_data_present == 1)) {
|
|
WORD32 fac_length;
|
|
short_fac_flag = ixheaacd_read_bits_buf(it_bit_buff, 1);
|
|
|
|
fac_length =
|
|
(short_fac_flag) ? ((usac_data->ccfl) / 16) : ((usac_data->ccfl) / 8);
|
|
|
|
fac_data = pstr_td_frame_data->fac_data;
|
|
fac_data[0] = ixheaacd_read_bits_buf(it_bit_buff, 7);
|
|
ixheaacd_fac_decoding(fac_length, 0, &fac_data[1], it_bit_buff);
|
|
}
|
|
|
|
err = ixheaacd_lpd_dec(usac_data, usac_data->str_tddec[chan],
|
|
pstr_td_frame_data, synth, first_lpd_flag,
|
|
short_fac_flag, bpf_control_info);
|
|
|
|
return (err);
|
|
}
|
|
|
|
WORD32 ixheaacd_tw_buff_update(ia_usac_data_struct *usac_data, WORD32 i,
|
|
ia_usac_lpd_decoder_handle st) {
|
|
WORD32 *p_ioverlap = usac_data->overlap_data_ptr[i];
|
|
WORD32 td_frame_prev = usac_data->td_frame_prev[i];
|
|
WORD32 window_sequence_last = usac_data->window_sequence_last[i];
|
|
WORD32 tw_mdct = usac_data->tw_mdct[0];
|
|
|
|
if (!td_frame_prev) {
|
|
if (tw_mdct) {
|
|
return -1;
|
|
} else {
|
|
ixheaacd_reset_acelp_data_fix(
|
|
usac_data, st, p_ioverlap,
|
|
(window_sequence_last == EIGHT_SHORT_SEQUENCE), 0);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
VOID ixheaacd_td_frm_dec(ia_usac_data_struct *usac_data, WORD32 k,
|
|
WORD32 mod0) {
|
|
WORD32 i;
|
|
WORD32 lfac = 0;
|
|
|
|
WORD32 *p_out_idata = usac_data->output_data_ptr[k];
|
|
WORD32 *p_ioverlap = usac_data->overlap_data_ptr[k];
|
|
WORD32 nlong = usac_data->ccfl;
|
|
WORD32 window_sequence_last = usac_data->window_sequence_last[k];
|
|
WORD32 td_frame_prev = usac_data->td_frame_prev[k];
|
|
WORD32 tw_mdct = usac_data->tw_mdct[0];
|
|
WORD32 nshort = nlong / 8;
|
|
WORD32 *p_in_idata = p_out_idata;
|
|
|
|
if (!td_frame_prev) {
|
|
if (window_sequence_last == EIGHT_SHORT_SEQUENCE) {
|
|
lfac = nshort / 2;
|
|
} else {
|
|
lfac = nshort;
|
|
}
|
|
}
|
|
|
|
if (!td_frame_prev && (mod0 == 0)) {
|
|
for (i = 0; i < (nlong / 2) - lfac - (LEN_SUBFR); i++) {
|
|
p_in_idata[i] = 0;
|
|
}
|
|
} else if (!td_frame_prev && (mod0 > 0)) {
|
|
for (i = 0; i < (nlong / 2) - lfac; i++) {
|
|
p_in_idata[i] = 0;
|
|
}
|
|
}
|
|
|
|
if (tw_mdct) {
|
|
if (!td_frame_prev && (mod0 == 0)) {
|
|
for (i = (nlong / 2) - lfac - (LEN_SUBFR); i < nlong / 2; i++) {
|
|
p_ioverlap[i + (nlong / 2)] = 0;
|
|
}
|
|
}
|
|
for (i = 0; i < nlong / 2; i++) {
|
|
p_out_idata[i] = p_ioverlap[i] << 1;
|
|
p_out_idata[i + nlong / 2] =
|
|
ixheaacd_add32_sat(p_ioverlap[i + nlong / 2] << 1, p_in_idata[i]);
|
|
p_ioverlap[i] = ixheaacd_add32_sat(p_in_idata[i + (nlong / 2)] >> 1,
|
|
p_ioverlap[i + nlong]);
|
|
p_ioverlap[i + (nlong / 2)] = 0;
|
|
p_ioverlap[i + nlong] = 0;
|
|
p_ioverlap[i + nlong + (nlong / 2)] = 0;
|
|
}
|
|
} else {
|
|
if (!td_frame_prev && (mod0 == 0)) {
|
|
for (i = (nlong / 2) - lfac - (LEN_SUBFR); i < nlong / 2; i++) {
|
|
p_ioverlap[i] = 0;
|
|
}
|
|
} else if (!td_frame_prev) {
|
|
for (i = (nlong / 2) - lfac; i < nlong; i++) {
|
|
p_ioverlap[i] = 0;
|
|
}
|
|
}
|
|
for (i = 0; i < nlong; i++) {
|
|
p_out_idata[i] = ixheaacd_add32_sat(p_ioverlap[i] << 1, p_in_idata[i]);
|
|
p_ioverlap[i] = 0;
|
|
}
|
|
}
|
|
}
|