/******************************************************************************
*
* Copyright (C) 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*****************************************************************************
* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
*/
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "impd_type_def.h"
#include "impd_drc_bitbuffer.h"
#include "impd_drc_extr_delta_coded_info.h"
#include "impd_drc_common.h"
#include "impd_drc_struct.h"
#include "impd_drc_parser.h"
#include "impd_drc_filter_bank.h"
#include "impd_drc_rom.h"
WORD32 impd_parse_loud_eq_instructions(
ia_bit_buf_struct* it_bit_buff,
ia_loud_eq_instructions_struct* loud_eq_instructions);
WORD32 impd_parse_eq_coefficients(ia_bit_buf_struct* it_bit_buff,
ia_eq_coeff_struct* str_eq_coeff);
WORD32 impd_parse_eq_instructions(
ia_bit_buf_struct* it_bit_buff, ia_drc_config* drc_config,
ia_eq_instructions_struct* str_eq_instructions);
WORD32 impd_dec_initial_gain(ia_bit_buf_struct* it_bit_buff,
const WORD32 gain_coding_profile,
FLOAT32* initial_gain) {
WORD32 sign, magn, bit_2_extract;
switch (gain_coding_profile) {
case GAIN_CODING_PROFILE_REGULAR:
sign = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
magn = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
*initial_gain = magn * 0.125f;
if (sign) *initial_gain = -*initial_gain;
break;
case GAIN_CODING_PROFILE_FADING:
case GAIN_CODING_PROFILE_CLIPPING:
bit_2_extract =
(gain_coding_profile == GAIN_CODING_PROFILE_FADING) ? 10 : 8;
sign = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (sign == 0)
*initial_gain = 0.0f;
else {
magn = impd_read_bits_buf(it_bit_buff, bit_2_extract);
if (it_bit_buff->error) return it_bit_buff->error;
*initial_gain = -(magn + 1) * 0.125f;
}
break;
case GAIN_CODING_PROFILE_CONSTANT:
break;
default:
return (UNEXPECTED_ERROR);
}
return (0);
}
WORD32 impd_dec_gains(ia_bit_buf_struct* it_bit_buff, WORD32 no_nodes,
WORD32 gain_coding_profile, ia_node_struct* str_node) {
WORD32 err = 0, k, e, m;
WORD32 bit;
WORD32 num_bits_read;
WORD32 code;
WORD32 code_found;
FLOAT32 drc_gain_delta = 0;
const ia_delta_gain_code_table_struct* ptr_delta_gain_code_table;
WORD32 no_delta_gain_entries;
err = impd_dec_initial_gain(it_bit_buff, gain_coding_profile,
&(str_node[0].loc_db_gain));
if (err) return (err);
impd_get_delta_gain_code_tbl(gain_coding_profile, &ptr_delta_gain_code_table,
&no_delta_gain_entries);
for (k = 1; k < no_nodes; k++) {
num_bits_read = 0;
code = 0;
code_found = 0;
e = 0;
while ((e < no_delta_gain_entries) && (!code_found)) {
for (m = 0; m < ptr_delta_gain_code_table[e].size - num_bits_read; m++) {
bit = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
code = (code << 1) + bit;
num_bits_read++;
}
while (num_bits_read == ptr_delta_gain_code_table[e].size) {
if (code == ptr_delta_gain_code_table[e].code) {
drc_gain_delta = ptr_delta_gain_code_table[e].value;
code_found = 1;
break;
}
e++;
}
}
if (code_found == 0) {
return (UNEXPECTED_ERROR);
}
str_node[k].loc_db_gain = str_node[k - 1].loc_db_gain + drc_gain_delta;
}
return (0);
}
WORD32 impd_dec_slopes(ia_bit_buf_struct* it_bit_buff, WORD32* no_nodes,
WORD32 gain_interpolation_type,
ia_node_struct* str_node) {
WORD32 k, e, m, bit;
WORD32 code;
WORD32 code_found;
FLOAT32 slope_value = 0;
bool end_marker = 0;
WORD32 num_bits_read;
const ia_slope_code_table_struct* ptr_slope_code_table;
WORD32 no_slope_code_entries;
ptr_slope_code_table = &(slope_code_tbl_entries_by_size[0]);
no_slope_code_entries = NUM_SLOPE_TBL_ENTRIES;
k = 0;
while (end_marker != 1) {
k++;
end_marker = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
}
*no_nodes = k;
if (gain_interpolation_type == GAIN_INTERPOLATION_TYPE_SPLINE) {
for (k = 0; k < *no_nodes; k++) {
num_bits_read = 0;
code = 0;
code_found = 0;
e = 0;
while ((e < no_slope_code_entries) && (!code_found)) {
for (m = 0; m < ptr_slope_code_table[e].size - num_bits_read; m++) {
bit = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
code = (code << 1) + bit;
num_bits_read++;
}
while (num_bits_read == ptr_slope_code_table[e].size) {
if (code == ptr_slope_code_table[e].code) {
slope_value = ptr_slope_code_table[e].value;
code_found = 1;
break;
}
e++;
}
}
str_node[k].slope = slope_value;
}
} else {
for (k = 0; k < *no_nodes; k++) {
str_node[k].slope = 0.0f;
}
}
return (0);
}
WORD32 impd_dec_times(ia_bit_buf_struct* it_bit_buff,
ia_tables_struct* str_tables, WORD32 num_nodes,
WORD32 delta_tmin, WORD32 drc_frame_size,
WORD32 full_frame, WORD32 time_offset,
ia_node_struct* str_node) {
WORD32 k, e, m;
WORD32 bit;
WORD32 num_bits_read;
WORD32 code;
WORD32 code_found = 0;
WORD32 time_delta = 0;
WORD32 time_offs = time_offset;
ia_delta_time_code_table_entry_struct* delta_time_code_table =
str_tables->delta_time_code_table;
bool frame_end_flag;
WORD32 node_time_tmp;
bool node_res_flag;
WORD32 exit_cnt;
if (full_frame == 0) {
frame_end_flag = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
} else {
frame_end_flag = 1;
}
if (frame_end_flag == 1) {
node_res_flag = 0;
for (k = 0; k < num_nodes - 1; k++) {
num_bits_read = 0;
code = 0;
code_found = 0;
exit_cnt = 0;
e = 1;
while ((e < N_DELTA_TIME_CODE_TABLE_ENTRIES_MAX) && (!code_found)) {
exit_cnt++;
if (exit_cnt > 100000) {
return -1;
}
for (m = 0; m < delta_time_code_table[e].size - num_bits_read; m++) {
bit = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
code = (code << 1) + bit;
num_bits_read++;
}
while (num_bits_read == delta_time_code_table[e].size) {
if (code == delta_time_code_table[e].code) {
time_delta = delta_time_code_table[e].value;
code_found = 1;
break;
}
e++;
}
}
node_time_tmp = time_offs + time_delta * delta_tmin;
if (node_time_tmp > drc_frame_size + time_offset) {
if (node_res_flag == 0) {
str_node[k].time = drc_frame_size + time_offset;
node_res_flag = 1;
}
str_node[k + 1].time = node_time_tmp;
} else {
str_node[k].time = node_time_tmp;
}
time_offs = node_time_tmp;
}
if (node_res_flag == 0) {
str_node[k].time = drc_frame_size + time_offset;
}
} else {
for (k = 0; k < num_nodes; k++) {
num_bits_read = 0;
code = 0;
code_found = 0;
e = 1;
exit_cnt = 0;
while ((e < N_DELTA_TIME_CODE_TABLE_ENTRIES_MAX) && (!code_found)) {
exit_cnt++;
if (exit_cnt > 100000) {
return (BITSTREAM_ERROR);
}
for (m = 0; m < delta_time_code_table[e].size - num_bits_read; m++) {
bit = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
code = (code << 1) + bit;
num_bits_read++;
}
while (num_bits_read == delta_time_code_table[e].size) {
if (code == delta_time_code_table[e].code) {
time_delta = delta_time_code_table[e].value;
code_found = 1;
break;
}
e++;
}
}
str_node[k].time = time_offs + time_delta * delta_tmin;
time_offs = str_node[k].time;
}
}
return (0);
}
WORD32 impd_drc_uni_gain_read(ia_bit_buf_struct* it_bit_buff,
ia_drc_bits_dec_struct* pstr_drc_uni_bs_dec,
ia_drc_config* drc_config,
ia_drc_gain_struct* pstr_uni_drc_gain) {
WORD32 err = 0;
WORD32 seq;
static WORD32 pkt_loss_frame_cnt = 0;
ia_spline_nodes_struct* str_spline_nodes = {0};
{
WORD32 gain_sequence_count =
drc_config->str_p_loc_drc_coefficients_uni_drc[0].gain_sequence_count;
for (seq = 0; seq < gain_sequence_count; seq++) {
WORD32 index = drc_config->str_p_loc_drc_coefficients_uni_drc[0]
.gain_set_params_index_for_gain_sequence[seq];
ia_gain_set_params_struct* gain_set_params =
&(drc_config->str_p_loc_drc_coefficients_uni_drc
->gain_set_params[index]);
if (gain_set_params->gain_coding_profile ==
GAIN_CODING_PROFILE_CONSTANT) {
str_spline_nodes =
&(pstr_uni_drc_gain->drc_gain_sequence[seq].str_spline_nodes[0]);
str_spline_nodes->num_nodes = 1;
str_spline_nodes->str_node[0].slope = 0.0;
str_spline_nodes->str_node[0].time =
(pstr_drc_uni_bs_dec->ia_drc_params_struct).drc_frame_size - 1;
str_spline_nodes->str_node[0].loc_db_gain = 0.0f;
} else {
err = impd_parse_drc_gain_sequence(
it_bit_buff, pstr_drc_uni_bs_dec, gain_set_params,
&(pstr_uni_drc_gain->drc_gain_sequence[seq]));
if (err) return (err);
}
}
}
if (it_bit_buff->ptr_bit_buf_base == NULL) {
pkt_loss_frame_cnt++;
if (pkt_loss_frame_cnt *
(FLOAT32)pstr_drc_uni_bs_dec->ia_drc_params_struct.drc_frame_size /
drc_config->sampling_rate >
MAXPACKETLOSSTIME) {
drc_config->apply_drc = 0;
}
} else {
pstr_uni_drc_gain->uni_drc_gain_ext_flag =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (pstr_uni_drc_gain->uni_drc_gain_ext_flag == 1) {
err = impd_parse_uni_drc_gain_ext(it_bit_buff,
&(pstr_uni_drc_gain->uni_drc_gain_ext));
if (err) return (err);
}
pkt_loss_frame_cnt = 0;
drc_config->apply_drc = 1;
}
return (0);
}
WORD32 impd_parse_uni_drc_gain_ext(
ia_bit_buf_struct* it_bit_buff,
ia_uni_drc_gain_ext_struct* uni_drc_gain_ext) {
WORD32 i, k;
WORD32 bit_size_len, ext_size_bits, bit_size, other_bit;
k = 0;
uni_drc_gain_ext->uni_drc_gain_ext_type[k] =
impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
while (uni_drc_gain_ext->uni_drc_gain_ext_type[k] != UNIDRCGAINEXT_TERM) {
bit_size_len = impd_read_bits_buf(it_bit_buff, 3);
if (it_bit_buff->error) return it_bit_buff->error;
ext_size_bits = bit_size_len + 4;
bit_size = impd_read_bits_buf(it_bit_buff, ext_size_bits);
if (it_bit_buff->error) return it_bit_buff->error;
uni_drc_gain_ext->ext_bit_size[k] = bit_size + 1;
switch (uni_drc_gain_ext->uni_drc_gain_ext_type[k]) {
default:
for (i = 0; i < uni_drc_gain_ext->ext_bit_size[k]; i++) {
other_bit = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
}
break;
}
k++;
uni_drc_gain_ext->uni_drc_gain_ext_type[k] =
impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
}
return (0);
}
WORD32 impd_parse_spline_nodes(ia_bit_buf_struct* it_bit_buff,
ia_drc_bits_dec_struct* pstr_drc_uni_bs_dec,
ia_gain_set_params_struct* gain_set_params,
ia_spline_nodes_struct* str_spline_nodes) {
WORD32 err = 0;
WORD32 time_offset;
if (gain_set_params->time_alignment == 0) {
time_offset = -1;
} else {
if (gain_set_params->time_delt_min_flag) {
time_offset = -gain_set_params->time_delt_min_val +
(gain_set_params->time_delt_min_val - 1) / 2;
} else {
time_offset =
-pstr_drc_uni_bs_dec->ia_drc_params_struct.delta_tmin_default +
(pstr_drc_uni_bs_dec->ia_drc_params_struct.delta_tmin_default - 1) /
2;
}
}
if (it_bit_buff->ptr_bit_buf_base == NULL) {
FLOAT32 prev_db_gain =
str_spline_nodes->str_node[str_spline_nodes->num_nodes - 1].loc_db_gain;
str_spline_nodes->drc_gain_coding_mode = 0;
str_spline_nodes->num_nodes = 1;
if (prev_db_gain < 0) {
str_spline_nodes->str_node[0].loc_db_gain = prev_db_gain;
} else {
str_spline_nodes->str_node[0].loc_db_gain = 0.f;
}
str_spline_nodes->str_node[0].slope = 0.0;
str_spline_nodes->str_node[0].time =
(pstr_drc_uni_bs_dec->ia_drc_params_struct).drc_frame_size +
time_offset;
} else {
str_spline_nodes->drc_gain_coding_mode = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error == PROC_COMPLETE) {
str_spline_nodes->drc_gain_coding_mode = 0;
str_spline_nodes->str_node[0].slope = 0.0;
str_spline_nodes->str_node[0].time =
(pstr_drc_uni_bs_dec->ia_drc_params_struct).drc_frame_size +
time_offset;
str_spline_nodes->str_node[0].loc_db_gain =
str_spline_nodes->str_node[str_spline_nodes->num_nodes - 1]
.loc_db_gain;
str_spline_nodes->num_nodes = 1;
} else {
if (it_bit_buff->error) return (it_bit_buff->error);
}
if (str_spline_nodes->drc_gain_coding_mode == 0) {
str_spline_nodes->num_nodes = 1;
err = impd_dec_initial_gain(it_bit_buff,
gain_set_params->gain_coding_profile,
&(str_spline_nodes->str_node[0].loc_db_gain));
if (err) return (err);
str_spline_nodes->str_node[0].slope = 0.0;
str_spline_nodes->str_node[0].time =
(pstr_drc_uni_bs_dec->ia_drc_params_struct).drc_frame_size +
time_offset;
} else {
err = impd_dec_slopes(it_bit_buff, &str_spline_nodes->num_nodes,
gain_set_params->gain_interpolation_type,
str_spline_nodes->str_node);
if (err) return (err);
if (gain_set_params->time_delt_min_flag) {
err = impd_dec_times(
it_bit_buff, &gain_set_params->str_tables,
str_spline_nodes->num_nodes, gain_set_params->time_delt_min_val,
(pstr_drc_uni_bs_dec->ia_drc_params_struct).drc_frame_size,
gain_set_params->full_frame, time_offset,
str_spline_nodes->str_node);
if (err) return (err);
err = impd_dec_gains(it_bit_buff, str_spline_nodes->num_nodes,
gain_set_params->gain_coding_profile,
str_spline_nodes->str_node);
if (err) return (err);
} else {
err = impd_dec_times(
it_bit_buff, &pstr_drc_uni_bs_dec->tables_default,
str_spline_nodes->num_nodes,
(pstr_drc_uni_bs_dec->ia_drc_params_struct).delta_tmin_default,
(pstr_drc_uni_bs_dec->ia_drc_params_struct).drc_frame_size,
gain_set_params->full_frame, time_offset,
str_spline_nodes->str_node);
if (err) return (err);
err = impd_dec_gains(it_bit_buff, str_spline_nodes->num_nodes,
gain_set_params->gain_coding_profile,
str_spline_nodes->str_node);
if (err) return (err);
}
}
}
return (0);
}
WORD32 impd_parse_drc_gain_sequence(
ia_bit_buf_struct* it_bit_buff, ia_drc_bits_dec_struct* pstr_drc_uni_bs_dec,
ia_gain_set_params_struct* gain_set_params,
ia_drc_gain_sequence_struct* drc_gain_sequence) {
WORD32 err = 0, i;
WORD32 prev_frame_time_buf[NODE_COUNT_MAX],
cur_frame_time_buf[NODE_COUNT_MAX];
WORD32 num_nodes_node_reservoir, num_nodes_cur, k, m;
if (((pstr_drc_uni_bs_dec->ia_drc_params_struct).delay_mode ==
DELAY_MODE_LOW_DELAY) &&
(gain_set_params->full_frame == 0)) {
return (PARAM_ERROR);
}
i = 0;
{
err = impd_parse_spline_nodes(it_bit_buff, pstr_drc_uni_bs_dec,
gain_set_params,
&(drc_gain_sequence->str_spline_nodes[i]));
if (err) return (err);
num_nodes_node_reservoir = 0;
num_nodes_cur = 0;
for (k = 0; k < drc_gain_sequence->str_spline_nodes[i].num_nodes; k++) {
if (drc_gain_sequence->str_spline_nodes[i].str_node[k].time >=
pstr_drc_uni_bs_dec->ia_drc_params_struct.drc_frame_size) {
prev_frame_time_buf[num_nodes_node_reservoir] =
drc_gain_sequence->str_spline_nodes[i].str_node[k].time;
num_nodes_node_reservoir++;
} else {
cur_frame_time_buf[num_nodes_cur] =
drc_gain_sequence->str_spline_nodes[i].str_node[k].time;
num_nodes_cur++;
}
}
for (k = 0; k < num_nodes_node_reservoir; k++) {
drc_gain_sequence->str_spline_nodes[i].str_node[k].time =
prev_frame_time_buf[k] -
2 * pstr_drc_uni_bs_dec->ia_drc_params_struct.drc_frame_size;
}
for (m = 0; m < num_nodes_cur; m++, k++) {
drc_gain_sequence->str_spline_nodes[i].str_node[k].time =
cur_frame_time_buf[m];
}
}
return (0);
}
WORD32 impd_parse_drc_ext_v1(ia_bit_buf_struct* it_bit_buff,
ia_drc_params_bs_dec_struct* ia_drc_params_struct,
ia_drc_config* drc_config,
ia_drc_config_ext* str_drc_config_ext) {
WORD32 dwnmix_instructions_v1_flag;
WORD32 dwnmix_instructions_v1_count;
WORD32 drc_coeffs_and_instructions_uni_drc_v1_flag;
WORD32 drc_coefficients_uni_drc_v1_count;
WORD32 drc_instructions_uni_drc_v1_count;
WORD32 i = 0, err = 0;
const WORD32 version = 1;
dwnmix_instructions_v1_flag = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (dwnmix_instructions_v1_flag == 1) {
dwnmix_instructions_v1_count = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 0; i < dwnmix_instructions_v1_count; i++) {
err = impd_parse_dwnmix_instructions(
it_bit_buff, version, ia_drc_params_struct,
&drc_config->channel_layout,
&drc_config
->dwnmix_instructions[i +
drc_config->dwnmix_instructions_count]);
if (err) return (err);
}
drc_config->dwnmix_instructions_count += dwnmix_instructions_v1_count;
}
drc_coeffs_and_instructions_uni_drc_v1_flag =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (drc_coeffs_and_instructions_uni_drc_v1_flag == 1) {
drc_coefficients_uni_drc_v1_count = impd_read_bits_buf(it_bit_buff, 3);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 0; i < drc_coefficients_uni_drc_v1_count; i++) {
err = impd_drc_parse_coeff(
it_bit_buff, version, ia_drc_params_struct,
&drc_config->str_p_loc_drc_coefficients_uni_drc
[i + drc_config->drc_coefficients_drc_count]);
if (err) return (err);
}
drc_config->drc_coefficients_drc_count += drc_coefficients_uni_drc_v1_count;
drc_instructions_uni_drc_v1_count = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 0; i < drc_instructions_uni_drc_v1_count; i++) {
err = impd_parse_drc_instructions_uni_drc(
it_bit_buff, version, drc_config,
&drc_config->str_drc_instruction_str
[i + drc_config->drc_instructions_uni_drc_count]);
if (err) return (err);
}
drc_config->drc_instructions_uni_drc_count +=
drc_instructions_uni_drc_v1_count;
}
str_drc_config_ext->loud_eq_instructions_flag =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_drc_config_ext->loud_eq_instructions_flag == 1) {
str_drc_config_ext->loud_eq_instructions_count =
impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 0; i < str_drc_config_ext->loud_eq_instructions_count; i++) {
err = impd_parse_loud_eq_instructions(
it_bit_buff, &str_drc_config_ext->loud_eq_instructions[i]);
if (err) return (err);
}
} else {
str_drc_config_ext->loud_eq_instructions_count = 0;
}
str_drc_config_ext->eq_flag = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_drc_config_ext->eq_flag == 1) {
err = impd_parse_eq_coefficients(it_bit_buff,
&str_drc_config_ext->str_eq_coeff);
if (err) return (err);
str_drc_config_ext->eq_instructions_count =
impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 0; i < str_drc_config_ext->eq_instructions_count; i++) {
err = impd_parse_eq_instructions(
it_bit_buff, drc_config, &str_drc_config_ext->str_eq_instructions[i]);
if (err) return (err);
}
}
return 0;
}
WORD32 impd_parse_filt_block(ia_bit_buf_struct* it_bit_buff,
ia_filt_block_struct* str_filter_block,
WORD32 block_count) {
// WORD32 err = 0;
WORD32 k, j, temp;
ia_filt_ele_struct* str_filter_element;
for (j = 0; j < block_count; j++) {
str_filter_block->filter_element_count = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
str_filter_element = &str_filter_block->str_filter_element[0];
for (k = 0; k < str_filter_block->filter_element_count; k++) {
temp = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
str_filter_element->filt_ele_idx = (temp & 0x7E) >> 1;
str_filter_element->filt_ele_gain_flag = temp & 1;
;
if (str_filter_element->filt_ele_gain_flag) {
WORD32 bs_filter_element_gain;
bs_filter_element_gain = impd_read_bits_buf(it_bit_buff, 10);
if (it_bit_buff->error) return it_bit_buff->error;
str_filter_element->filt_ele_gain =
bs_filter_element_gain * 0.125f - 96.0f;
}
str_filter_element++;
}
str_filter_block++;
}
return (0);
}
WORD32 impd_parse_unique_td_filt_ele(
ia_bit_buf_struct* it_bit_buff,
ia_unique_td_filt_element* unique_td_filt_ele,
WORD32 td_filter_element_count) {
WORD32 m, sign, j, temp;
FLOAT32 tmp;
for (j = 0; j < td_filter_element_count; j++) {
unique_td_filt_ele->eq_filter_format = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (unique_td_filt_ele->eq_filter_format == 0) {
WORD32 bs_real_zero_radius, bs_generic_zero_radius, bs_generic_zero_angle;
WORD32 bs_real_pole_radius, bs_cmplx_pole_radius, bs_cmplx_pole_angle;
WORD32 bs_real_zero_radius_one_count;
temp = impd_read_bits_buf(it_bit_buff, 23);
if (it_bit_buff->error) return it_bit_buff->error;
bs_real_zero_radius_one_count = (temp >> 20) & 7;
unique_td_filt_ele->bs_real_zero_radius_one_count =
2 * bs_real_zero_radius_one_count;
unique_td_filt_ele->real_zero_count = (temp & 0xFC000) >> 14;
unique_td_filt_ele->generic_zero_count = (temp & 0x3F00) >> 8;
unique_td_filt_ele->real_pole_count = (temp & 0xF0) >> 4;
unique_td_filt_ele->cmplx_pole_count = temp & 0xF;
temp = impd_read_bits_buf(
it_bit_buff, unique_td_filt_ele->bs_real_zero_radius_one_count);
if (it_bit_buff->error) return it_bit_buff->error;
for (m = unique_td_filt_ele->bs_real_zero_radius_one_count - 1; m >= 0;
m--) {
unique_td_filt_ele->zero_sign[m] = (temp & 1);
temp = temp >> 1;
}
for (m = 0; m < unique_td_filt_ele->real_zero_count; m++) {
temp = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
bs_real_zero_radius = (temp & 0xFE) >> 1;
sign = temp & 0x01;
tmp = 1.0f - zero_pole_radius_tbl[bs_real_zero_radius];
sign = sign << 1;
unique_td_filt_ele->real_zero_radius[m] = (1 - sign) * tmp;
}
for (m = 0; m < unique_td_filt_ele->generic_zero_count; m++) {
temp = impd_read_bits_buf(it_bit_buff, 14);
if (it_bit_buff->error) return it_bit_buff->error;
bs_generic_zero_radius = (temp & 0x3F80) >> 7;
unique_td_filt_ele->generic_zero_radius[m] =
1.0f - zero_pole_radius_tbl[bs_generic_zero_radius];
bs_generic_zero_angle = (temp & 0x7F);
unique_td_filt_ele->generic_zero_angle[m] =
zero_pole_angle_tbl[bs_generic_zero_angle];
}
for (m = 0; m < unique_td_filt_ele->real_pole_count; m++) {
temp = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
bs_real_pole_radius = (temp & 0xFE) >> 1;
sign = temp & 0x01;
tmp = 1.0f - zero_pole_radius_tbl[bs_real_pole_radius];
sign = sign << 1;
unique_td_filt_ele->real_pole_radius[m] = (1 - sign) * tmp;
}
for (m = 0; m < unique_td_filt_ele->cmplx_pole_count; m++) {
temp = impd_read_bits_buf(it_bit_buff, 14);
if (it_bit_buff->error) return it_bit_buff->error;
bs_cmplx_pole_radius = (temp & 0x3F80) >> 7;
unique_td_filt_ele->complex_pole_radius[m] =
1.0f - zero_pole_radius_tbl[bs_cmplx_pole_radius];
bs_cmplx_pole_angle = (temp & 0x7F);
unique_td_filt_ele->complex_pole_angle[m] =
zero_pole_angle_tbl[bs_cmplx_pole_angle];
}
} else {
temp = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
unique_td_filt_ele->fir_filt_order = (temp & 0xFE) >> 1;
unique_td_filt_ele->fir_symmetry = temp & 0x01;
for (m = 0; m < unique_td_filt_ele->fir_filt_order / 2 + 1; m++) {
WORD32 sign, bs_fir_coeff;
FLOAT32 tmp;
temp = impd_read_bits_buf(it_bit_buff, 11);
if (it_bit_buff->error) return it_bit_buff->error;
sign = (temp >> 10) & 0x01;
bs_fir_coeff = temp & 0x03FF;
tmp = (FLOAT32)pow(10.0f, -0.05f * bs_fir_coeff * 0.0625f);
sign = sign << 1;
unique_td_filt_ele->fir_coeff[m] = (1 - sign) * tmp;
}
}
unique_td_filt_ele++;
}
return (0);
}
WORD32 impd_decode_eq_slope_code(ia_bit_buf_struct* it_bit_buff,
FLOAT32* eq_slope, WORD32 num_eq_nodes) {
WORD32 bits = 0;
WORD32 k;
for (k = 0; k < num_eq_nodes; k++) {
bits = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (bits == 0x1) {
*eq_slope = 0.0f;
} else {
bits = impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
*eq_slope = eq_slope_tbl[bits];
}
eq_slope++;
}
return (0);
}
WORD32
impd_decode_gain_initial_code(ia_bit_buf_struct* it_bit_buff,
FLOAT32* eq_gain_initial) {
WORD32 bits, bits1;
bits1 = impd_read_bits_buf(it_bit_buff, 2);
if (it_bit_buff->error) return it_bit_buff->error;
switch (bits1) {
case 0x0:
bits = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
*eq_gain_initial = 0.5f * bits - 8.0f;
break;
case 0x1:
case 0x2:
bits = impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
if (bits < 8) {
*eq_gain_initial = bits1 * bits - bits1 * 16.0f;
} else {
*eq_gain_initial = (FLOAT32)bits1 * bits;
}
break;
case 0x3:
bits = impd_read_bits_buf(it_bit_buff, 3);
if (it_bit_buff->error) return it_bit_buff->error;
*eq_gain_initial = 4.0f * bits - 64.0f;
break;
default:
break;
}
return (0);
}
WORD32 impd_parse_eq_subband_gain_spline(
ia_bit_buf_struct* it_bit_buff,
ia_eq_subband_gain_spline_struct* str_eq_subband_gain_spline,
WORD32 eq_subband_gains_count) {
WORD32 err = 0, eq_nodes_cnt, j, k, bits, *eq_freq_delta;
FLOAT32* peq_gain_delta;
for (j = 0; j < eq_subband_gains_count; j++) {
eq_nodes_cnt = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_subband_gain_spline->num_eq_nodes = eq_nodes_cnt + 2;
err = impd_decode_eq_slope_code(it_bit_buff,
&(str_eq_subband_gain_spline->eq_slope[0]),
str_eq_subband_gain_spline->num_eq_nodes);
if (err) return (err);
eq_freq_delta = &(str_eq_subband_gain_spline->eq_freq_delta[1]);
for (k = 1; k < str_eq_subband_gain_spline->num_eq_nodes; k++) {
bits = impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
*eq_freq_delta = bits + 1;
eq_freq_delta++;
}
err = impd_decode_gain_initial_code(
it_bit_buff, &(str_eq_subband_gain_spline->eq_gain_initial));
if (err) return (err);
peq_gain_delta = &(str_eq_subband_gain_spline->eq_gain_delta[1]);
for (k = 1; k < str_eq_subband_gain_spline->num_eq_nodes; k++) {
bits = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
*peq_gain_delta = eq_gain_delta_tbl[bits];
peq_gain_delta++;
}
str_eq_subband_gain_spline++;
}
return (0);
}
WORD32 impd_parse_eq_subband_gain_vector(
ia_bit_buf_struct* it_bit_buff, const WORD32 eq_subband_gain_count,
ia_eq_subband_gain_vector* str_eq_subband_gain_vector,
WORD32 eq_subband_gains_count) {
WORD32 m, k, temp;
for (k = 0; k < eq_subband_gains_count; k++) {
for (m = 0; m < eq_subband_gain_count; m++) {
WORD32 sign, bs_eq_subband_gain;
temp = impd_read_bits_buf(it_bit_buff, 9);
if (it_bit_buff->error) return it_bit_buff->error;
sign = (temp >> 8) & 1;
bs_eq_subband_gain = temp & 0x7F;
sign = sign << 1;
str_eq_subband_gain_vector->eq_subband_gain[m] =
((1 - sign) * bs_eq_subband_gain) * 0.125f;
}
str_eq_subband_gain_vector++;
}
return (0);
}
WORD32 impd_parse_eq_coefficients(ia_bit_buf_struct* it_bit_buff,
ia_eq_coeff_struct* str_eq_coeff) {
WORD32 err = 0;
WORD32 eq_gain_cnt, mu, nu, temp;
WORD32 subband_gain_len_tbl[7] = {0, 32, 39, 64, 71, 128, 135};
str_eq_coeff->eq_delay_max_present = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_eq_coeff->eq_delay_max_present) {
mu = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
nu = impd_read_bits_buf(it_bit_buff, 3);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_coeff->eq_delay_max = 16 * mu * (1 << nu);
}
str_eq_coeff->unique_filter_block_count = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
err = impd_parse_filt_block(it_bit_buff, &(str_eq_coeff->str_filter_block[0]),
str_eq_coeff->unique_filter_block_count);
if (err) return (err);
str_eq_coeff->unique_td_filter_element_count =
impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
err = impd_parse_unique_td_filt_ele(
it_bit_buff, &(str_eq_coeff->unique_td_filt_ele[0]),
str_eq_coeff->unique_td_filter_element_count);
if (err) return (err);
str_eq_coeff->unique_eq_subband_gains_count =
impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_eq_coeff->unique_eq_subband_gains_count > 0) {
temp = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_coeff->eq_subband_gain_representation = (temp >> 4) & 0x01;
str_eq_coeff->eq_subband_gain_format = temp & 0x0F;
if (str_eq_coeff->eq_subband_gain_format == GAINFORMAT_UNIFORM) {
eq_gain_cnt = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_coeff->eq_subband_gain_count = eq_gain_cnt + 1;
} else
str_eq_coeff->eq_subband_gain_count =
subband_gain_len_tbl[str_eq_coeff->eq_subband_gain_format];
if (str_eq_coeff->eq_subband_gain_representation == 1) {
err = impd_parse_eq_subband_gain_spline(
it_bit_buff, &(str_eq_coeff->str_eq_subband_gain_spline[0]),
str_eq_coeff->unique_eq_subband_gains_count);
if (err) return (err);
} else {
err = impd_parse_eq_subband_gain_vector(
it_bit_buff, str_eq_coeff->eq_subband_gain_count,
&(str_eq_coeff->str_eq_subband_gain_vector[0]),
str_eq_coeff->unique_eq_subband_gains_count);
if (err) return (err);
}
}
return (0);
}
WORD32 impd_parser_td_filter_cascade(
ia_bit_buf_struct* it_bit_buff,
ia_eq_instructions_struct* str_eq_instructions,
ia_td_filter_cascade_struct* str_td_filter_cascade) {
// WORD32 err=0,
WORD32 i, ii, k;
WORD32 eq_cascade_gain;
ia_filter_block_refs_struct* str_filter_block_refs =
&(str_td_filter_cascade->str_filter_block_refs[0]);
for (i = 0; i < str_eq_instructions->eq_ch_group_count; i++) {
str_td_filter_cascade->eq_cascade_gain_present[i] =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_td_filter_cascade->eq_cascade_gain_present[i]) {
eq_cascade_gain = impd_read_bits_buf(it_bit_buff, 10);
if (it_bit_buff->error) return it_bit_buff->error;
str_td_filter_cascade->eq_cascade_gain[i] =
0.125f * eq_cascade_gain - 96.0f;
} else {
str_td_filter_cascade->eq_cascade_gain[i] = 0.0f;
}
str_filter_block_refs->filter_block_count =
impd_read_bits_buf(it_bit_buff, 4);
if (it_bit_buff->error) return it_bit_buff->error;
for (ii = 0; ii < str_filter_block_refs->filter_block_count; ii++) {
str_filter_block_refs->filter_block_index[ii] =
impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
}
str_filter_block_refs++;
}
str_td_filter_cascade->eq_phase_alignment_present =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_td_filter_cascade->eq_phase_alignment_present) {
for (i = 0; i < str_eq_instructions->eq_ch_group_count; i++) {
for (k = i + 1; k < str_eq_instructions->eq_ch_group_count; k++) {
str_td_filter_cascade->eq_phase_alignment[i][k] =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
}
}
} else {
for (i = 0; i < str_eq_instructions->eq_ch_group_count; i++) {
for (k = i + 1; k < str_eq_instructions->eq_ch_group_count; k++)
str_td_filter_cascade->eq_phase_alignment[i][k] = 1;
}
}
return (0);
}
WORD32 impd_parse_eq_instructions(
ia_bit_buf_struct* it_bit_buff, ia_drc_config* drc_config,
ia_eq_instructions_struct* str_eq_instructions) {
WORD32 i, k, channel_count, temp;
WORD32 dmix_id_present, additional_dmix_id_present,
additional_dmix_id_cnt = 0;
WORD32 additional_drc_set_id_present, additional_drc_set_id_cnt;
temp = impd_read_bits_buf(it_bit_buff, 11);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_instructions->eq_set_id = (temp >> 5) & 0x3F;
str_eq_instructions->eq_set_complexity_level = (temp >> 1) & 0x0F;
dmix_id_present = temp & 0x01;
if (dmix_id_present) {
temp = impd_read_bits_buf(it_bit_buff, 9);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_instructions->downmix_id[0] = (temp >> 2) & 0x7F;
str_eq_instructions->eq_apply_to_downmix = (temp >> 1) & 0x01;
additional_dmix_id_present = temp & 0x01;
if (additional_dmix_id_present) {
additional_dmix_id_cnt = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 1; i < additional_dmix_id_cnt + 1; i++) {
str_eq_instructions->downmix_id[i] = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
}
}
} else {
str_eq_instructions->downmix_id[0] = 0;
}
str_eq_instructions->dwnmix_id_count = 1 + additional_dmix_id_cnt;
temp = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_instructions->drc_set_id[0] = (temp >> 1) & 0x3F;
additional_drc_set_id_present = temp & 0x01;
if (additional_drc_set_id_present) {
additional_drc_set_id_cnt = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 1; i < additional_drc_set_id_cnt + 1; i++) {
str_eq_instructions->drc_set_id[i] = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
}
} else {
additional_drc_set_id_cnt = 0;
}
str_eq_instructions->drc_set_id_count = 1 + additional_drc_set_id_cnt;
temp = impd_read_bits_buf(it_bit_buff, 17);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_instructions->eq_set_purpose = (temp >> 1) & 0xFFFF;
str_eq_instructions->depends_on_eq_set_present = temp & 0x01;
if (str_eq_instructions->depends_on_eq_set_present) {
str_eq_instructions->depends_on_eq_set = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
} else {
str_eq_instructions->no_independent_eq_use =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
}
str_eq_instructions->eq_channel_count = channel_count =
drc_config->channel_layout.base_channel_count;
if ((dmix_id_present == 1) &&
(str_eq_instructions->eq_apply_to_downmix == 1) &&
(str_eq_instructions->downmix_id[0] != 0) &&
(str_eq_instructions->downmix_id[0] != ID_FOR_ANY_DOWNMIX) &&
(str_eq_instructions->dwnmix_id_count == 1)) {
for (i = 0; i < drc_config->dwnmix_instructions_count; i++) {
if (str_eq_instructions->downmix_id[0] ==
drc_config->dwnmix_instructions[i].downmix_id)
break;
}
if (i == drc_config->dwnmix_instructions_count) {
return UNEXPECTED_ERROR;
}
str_eq_instructions->eq_channel_count = channel_count =
drc_config->dwnmix_instructions[i].target_channel_count;
} else if ((str_eq_instructions->downmix_id[0] == ID_FOR_ANY_DOWNMIX) ||
(str_eq_instructions->dwnmix_id_count > 1)) {
channel_count = 1;
}
str_eq_instructions->eq_ch_group_count = 0;
for (i = 0; i < channel_count; i++) {
WORD32 new_group = 1;
str_eq_instructions->eq_ch_group_of_channel[i] =
impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
for (k = 0; k < i; k++) {
if (str_eq_instructions->eq_ch_group_of_channel[i] ==
str_eq_instructions->eq_ch_group_of_channel[k]) {
new_group = 0;
break;
}
}
if (new_group == 1) {
str_eq_instructions->eq_ch_group_count += 1;
}
}
str_eq_instructions->td_filter_cascade_present =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_eq_instructions->td_filter_cascade_present) {
impd_parser_td_filter_cascade(
it_bit_buff, str_eq_instructions,
&(str_eq_instructions->str_td_filter_cascade));
}
str_eq_instructions->subband_gains_present =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_eq_instructions->subband_gains_present) {
for (i = 0; i < str_eq_instructions->eq_ch_group_count; i++) {
str_eq_instructions->subband_gains_index[i] =
impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
}
}
str_eq_instructions->eq_transition_duration_present =
impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (str_eq_instructions->eq_transition_duration_present) {
WORD32 bs_eq_transition_duration;
bs_eq_transition_duration = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
str_eq_instructions->eq_transition_duration = (WORD32)(
0.001f *
(FLOAT32)pow(2.0f, 2.0f + bs_eq_transition_duration * 0.0625f));
}
return (0);
}
WORD32 impd_parse_loud_eq_instructions(
ia_bit_buf_struct* it_bit_buff,
ia_loud_eq_instructions_struct* loud_eq_instructions) {
WORD32 i, bs_loud_eq_scaling, bs_loud_eq_offset, temp;
WORD32 dmix_id_present, additional_dmix_id_present,
additional_dmix_id_cnt = 0;
WORD32 drc_set_id_present, additional_drc_set_id_present,
additional_drc_set_id_cnt = 0;
WORD32 eq_set_id_present, additional_eq_set_id_present,
additional_eq_set_id_cnt = 0;
temp = impd_read_bits_buf(it_bit_buff, 9);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->loud_eq_set_id = (temp >> 5) & 0x0F;
loud_eq_instructions->drc_location = (temp >> 1) & 0x0F;
dmix_id_present = temp & 0x01;
if (dmix_id_present) {
temp = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->downmix_id[0] = (temp >> 1) & 0x7F;
additional_dmix_id_present = temp & 0x01;
if (additional_dmix_id_present) {
additional_dmix_id_cnt = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 1; i < additional_dmix_id_cnt + 1; i++) {
loud_eq_instructions->downmix_id[i] =
impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
}
}
} else {
loud_eq_instructions->downmix_id[0] = 0;
}
loud_eq_instructions->dwnmix_id_count = 1 + additional_dmix_id_cnt;
drc_set_id_present = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (drc_set_id_present) {
temp = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->drc_set_id[0] = (temp >> 1) & 0x3F;
additional_drc_set_id_present = temp & 0x01;
if (additional_drc_set_id_present) {
additional_drc_set_id_cnt = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 1; i < additional_drc_set_id_cnt + 1; i++) {
loud_eq_instructions->drc_set_id[i] =
impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
}
}
} else {
loud_eq_instructions->drc_set_id[0] = 0;
}
loud_eq_instructions->drc_set_id_count = 1 + additional_drc_set_id_cnt;
eq_set_id_present = impd_read_bits_buf(it_bit_buff, 1);
if (it_bit_buff->error) return it_bit_buff->error;
if (eq_set_id_present) {
temp = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->eq_set_id[0] = (temp >> 1) & 0x3F;
additional_eq_set_id_present = temp & 0x01;
if (additional_eq_set_id_present) {
additional_eq_set_id_cnt = impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
for (i = 0; i < additional_eq_set_id_cnt; i++) {
loud_eq_instructions->eq_set_id[i + 1] =
impd_read_bits_buf(it_bit_buff, 6);
if (it_bit_buff->error) return it_bit_buff->error;
}
}
} else {
loud_eq_instructions->eq_set_id[0] = 0;
}
loud_eq_instructions->eq_set_id_count = 1 + additional_eq_set_id_cnt;
temp = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->loudness_after_drc = (temp >> 7) & 0x01;
loud_eq_instructions->loudness_after_eq = (temp >> 6) & 0x01;
loud_eq_instructions->loud_eq_gain_sequence_count = temp & 0x3F;
for (i = 0; i < loud_eq_instructions->loud_eq_gain_sequence_count; i++) {
temp = impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->gain_seq_idx[i] = (temp >> 1) & 0x3F;
loud_eq_instructions->drc_characteristic_format_is_cicp[i] = temp & 0x01;
if (loud_eq_instructions->drc_characteristic_format_is_cicp[i]) {
loud_eq_instructions->drc_characteristic[i] =
impd_read_bits_buf(it_bit_buff, 7);
if (it_bit_buff->error) return it_bit_buff->error;
} else {
temp = impd_read_bits_buf(it_bit_buff, 8);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->drc_characteristic_left_index[i] =
(temp >> 4) & 0x0F;
loud_eq_instructions->drc_characteristic_right_index[i] = temp & 0x0F;
}
temp = impd_read_bits_buf(it_bit_buff, 9);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->frequency_range_index[i] = (temp >> 3) & 0x3F;
bs_loud_eq_scaling = temp & 0x07;
loud_eq_instructions->loud_eq_scaling[i] =
(FLOAT32)pow(2.0f, -0.5f * bs_loud_eq_scaling);
bs_loud_eq_offset = impd_read_bits_buf(it_bit_buff, 5);
if (it_bit_buff->error) return it_bit_buff->error;
loud_eq_instructions->loud_eq_offset[i] = 1.5f * bs_loud_eq_offset - 16.0f;
}
return (0);
}