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libxaac/test/encoder/impd_drc_user_config.c
akshayragir833 3dfa708b6e
Loudness leveling support for encoder and decoder (#99) 
* Loudness leveling support for encoder and decoder

- Addition of loudness leveling support to encoder and
  decoder as per ISO/IEC 23003-4:2020/Amd.2:2023(E)

Testing:

Encoder: Smoke-test

Decoder: CTS and Conformance for x86, x86_64, armv7 and armv8 are
         passing

* Addressed review comments

* Addressed minor nits in documentation

---------

Co-authored-by: Akshay Ragir <100833@ittiam.com>
2025-07-28 17:40:45 +05:30

460 lines
23 KiB
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/******************************************************************************
* *
* Copyright (C) 2023 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 <stdlib.h>
#include <string.h>
#include "ixheaac_type_def.h"
#include "iusace_bitbuffer.h"
#include "impd_drc_common_enc.h"
#include "impd_drc_uni_drc.h"
#include "impd_drc_tables.h"
#include "impd_drc_api.h"
#include "impd_drc_uni_drc_eq.h"
#include "impd_drc_uni_drc_filter_bank.h"
#include "impd_drc_gain_enc.h"
#include "impd_drc_struct_def.h"
#include "impd_drc_enc.h"
#include "impd_drc_user_config.h"
static FLOAT32 impd_drc_get_float_value(FILE *fp) {
WORD32 i = 0;
FLOAT32 result = 0.0f;
CHAR8 line[1024];
pCHAR8 retval;
retval = fgets(line, sizeof(line), fp);
if (retval) {
pCHAR8 c = line;
while ((line[0] == '#' || line[0] == '\n') && (retval != NULL)) {
retval = fgets(line, sizeof(line), fp);
}
while (line[i] != ':') {
c++;
i++;
}
c++;
result = (FLOAT32)atof(c);
}
return result;
}
static WORD32 impd_drc_get_integer_value(FILE *fp) {
WORD32 i = 0;
WORD32 result = 0;
CHAR8 line[1024];
pCHAR8 retval;
retval = fgets(line, sizeof(line), fp);
if (retval) {
pCHAR8 c = line;
while ((line[0] == '#' || line[0] == '\n') && (retval != NULL)) {
retval = fgets(line, sizeof(line), fp);
}
while (line[i] != ':') {
c++;
i++;
}
c++;
if (c[0] == '0' && c[1] == 'x') {
result = (WORD32)strtol(c, NULL, 16);
} else {
result = atoi(c);
}
}
return result;
}
VOID ixheaace_read_drc_config_params(FILE *fp, ia_drc_enc_params_struct *pstr_enc_params,
ia_drc_uni_drc_config_struct *pstr_uni_drc_config,
ia_drc_loudness_info_set_struct *pstr_enc_loudness_info_set,
ia_drc_uni_drc_gain_ext_struct *pstr_enc_gain_extension,
WORD32 in_ch) {
WORD32 n, g, s, m, ch, p;
WORD32 gain_set_channels;
pstr_enc_params->delay_mode = DELAY_MODE_REGULAR_DELAY;
pstr_uni_drc_config->sample_rate_present = 1;
pstr_uni_drc_config->str_drc_coefficients_uni_drc->drc_frame_size_present = 0;
pstr_uni_drc_config->loudness_info_set_present = 1;
#ifdef LOUDNESS_LEVELING_SUPPORT
WORD16 loudness_leveling_extension_present = 0;
UWORD32 config_extension_count = 0;
#endif
/*********** str_drc_instructions_uni_drc *************/
pstr_uni_drc_config->drc_instructions_uni_drc_count = impd_drc_get_integer_value(fp);
pstr_uni_drc_config->drc_instructions_uni_drc_count =
MIN(pstr_uni_drc_config->drc_instructions_uni_drc_count, MAX_DRC_INSTRUCTIONS_COUNT);
for (n = 0; n < pstr_uni_drc_config->drc_instructions_uni_drc_count; n++) {
ia_drc_instructions_uni_drc *pstr_drc_instructions_uni_drc =
&pstr_uni_drc_config->str_drc_instructions_uni_drc[n];
pstr_drc_instructions_uni_drc->drc_set_id = n + 1;
pstr_drc_instructions_uni_drc->downmix_id = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->additional_downmix_id_present = 0;
pstr_drc_instructions_uni_drc->additional_downmix_id_count = 0;
pstr_drc_instructions_uni_drc->drc_location = 1;
pstr_drc_instructions_uni_drc->depends_on_drc_set_present = 0;
pstr_drc_instructions_uni_drc->depends_on_drc_set = 0;
pstr_drc_instructions_uni_drc->no_independent_use = 0;
pstr_drc_instructions_uni_drc->drc_set_effect = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->drc_set_target_loudness_present = 0;
pstr_drc_instructions_uni_drc->drc_set_target_loudness_value_upper = 0;
pstr_drc_instructions_uni_drc->drc_set_target_loudness_value_lower_present = 0;
pstr_drc_instructions_uni_drc->drc_set_target_loudness_value_lower = 0;
gain_set_channels = impd_drc_get_integer_value(fp);
gain_set_channels = MIN(gain_set_channels, MAX_CHANNEL_COUNT);
for (ch = 0; ch < gain_set_channels; ch++) {
pstr_drc_instructions_uni_drc->gain_set_index[ch] = impd_drc_get_integer_value(fp);
}
for (; ch < MAX_CHANNEL_COUNT; ch++) {
if (gain_set_channels > 0) {
pstr_drc_instructions_uni_drc->gain_set_index[ch] =
pstr_drc_instructions_uni_drc->gain_set_index[gain_set_channels - 1];
} else {
pstr_drc_instructions_uni_drc->gain_set_index[ch] = 0;
}
}
pstr_drc_instructions_uni_drc->num_drc_channel_groups = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->num_drc_channel_groups =
MIN(pstr_drc_instructions_uni_drc->num_drc_channel_groups, MAX_CHANNEL_GROUP_COUNT);
for (g = 0; g < pstr_drc_instructions_uni_drc->num_drc_channel_groups; g++) {
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].gain_scaling_present[0] = 0;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].attenuation_scaling[0] = 1.5f;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].amplification_scaling[0] = 1.5f;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].gain_offset_present[0] = 0;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].gain_offset[0] = 8.0f;
}
pstr_drc_instructions_uni_drc->limiter_peak_target_present = 0;
pstr_drc_instructions_uni_drc->limiter_peak_target = 0.0f;
pstr_drc_instructions_uni_drc->drc_instructions_type = 0;
pstr_drc_instructions_uni_drc->mae_group_id = 0;
pstr_drc_instructions_uni_drc->mae_group_preset_id = 0;
#ifdef LOUDNESS_LEVELING_SUPPORT
if (pstr_drc_instructions_uni_drc->drc_set_effect & EFFECT_BIT_DUCK_SELF) {
pstr_drc_instructions_uni_drc->leveling_present = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->ducking_only_set_present = impd_drc_get_integer_value(fp);
loudness_leveling_extension_present = 1;
}
#endif // LOUDNESS_LEVELING_SUPPORT
}
/*********** str_drc_coefficients_uni_drc *************/
pstr_uni_drc_config->drc_coefficients_uni_drc_count = impd_drc_get_integer_value(fp);
pstr_uni_drc_config->drc_coefficients_uni_drc_count =
MIN(pstr_uni_drc_config->drc_coefficients_uni_drc_count, MAX_DRC_COEFF_COUNT);
for (n = 0; n < pstr_uni_drc_config->drc_coefficients_uni_drc_count; n++) {
ia_drc_coefficients_uni_drc_struct *pstr_drc_coefficients_uni_drc =
&pstr_uni_drc_config->str_drc_coefficients_uni_drc[n];
pstr_drc_coefficients_uni_drc->drc_location = 1;
pstr_drc_coefficients_uni_drc->gain_set_count = impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc->gain_set_count =
MIN(pstr_drc_coefficients_uni_drc->gain_set_count, GAIN_SET_COUNT_MAX);
for (s = 0; s < pstr_drc_coefficients_uni_drc->gain_set_count; s++) {
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_coding_profile = 0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_interpolation_type = 1;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].full_frame = 0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].time_alignment = 0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].time_delta_min_present = 0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].band_count =
impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].band_count =
MIN(pstr_drc_coefficients_uni_drc->str_gain_set_params[s].band_count, MAX_BAND_COUNT);
if (pstr_drc_coefficients_uni_drc->str_gain_set_params[s].band_count == 1) {
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].nb_points =
impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].nb_points =
MIN(pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].nb_points,
MAX_GAIN_POINTS);
for (p = 0;
p < pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].nb_points;
p++) {
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].gain_points[p].x =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].gain_points[p].y =
impd_drc_get_float_value(fp);
}
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].width =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].attack =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].decay =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[0].drc_characteristic =
0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s]
.gain_params[0]
.crossover_freq_index = 0;
} else {
for (m = 0; m < pstr_drc_coefficients_uni_drc->str_gain_set_params[s].band_count; m++) {
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].nb_points =
impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].nb_points =
MIN(pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].nb_points,
MAX_GAIN_POINTS);
for (p = 0;
p < pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].nb_points;
p++) {
pstr_drc_coefficients_uni_drc->str_gain_set_params[s]
.gain_params[m]
.gain_points[p]
.x = impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s]
.gain_params[m]
.gain_points[p]
.y = impd_drc_get_float_value(fp);
}
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].width =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].attack =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].gain_params[m].decay =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s].drc_band_type = 0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s]
.gain_params[m]
.start_sub_band_index = impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc->str_gain_set_params[s]
.gain_params[m]
.drc_characteristic = 0;
pstr_drc_coefficients_uni_drc->str_gain_set_params[s]
.gain_params[m]
.crossover_freq_index = 0;
}
}
}
}
/*********** str_channel_layout *************/
pstr_uni_drc_config->str_channel_layout.layout_signaling_present = 0;
pstr_uni_drc_config->str_channel_layout.defined_layout = 0;
pstr_uni_drc_config->str_channel_layout.speaker_position[0] = 0;
/*********** str_downmix_instructions *************/
pstr_uni_drc_config->downmix_instructions_count = 0;
pstr_uni_drc_config->drc_description_basic_present = 0;
pstr_uni_drc_config->uni_drc_config_ext_present = 1;
if (pstr_uni_drc_config->uni_drc_config_ext_present) {
#ifdef LOUDNESS_LEVELING_SUPPORT
pstr_uni_drc_config->str_uni_drc_config_ext.uni_drc_config_ext_type[config_extension_count] =
UNIDRC_CONF_EXT_V1;
config_extension_count++;
#else
pstr_uni_drc_config->str_uni_drc_config_ext.uni_drc_config_ext_type[0] = UNIDRC_CONF_EXT_V1;
#endif
pstr_uni_drc_config->str_uni_drc_config_ext.downmix_instructions_v1_present = 1;
if (pstr_uni_drc_config->str_uni_drc_config_ext.downmix_instructions_v1_present) {
/*********** str_downmix_instructions_v1 *************/
pstr_uni_drc_config->str_uni_drc_config_ext.downmix_instructions_v1_count = impd_drc_get_integer_value(fp);
pstr_uni_drc_config->str_uni_drc_config_ext.downmix_instructions_v1_count =
MIN(pstr_uni_drc_config->str_uni_drc_config_ext.downmix_instructions_v1_count, MAX_DOWNMIX_INSTRUCTION_COUNT);
for (n = 0; n < pstr_uni_drc_config->str_uni_drc_config_ext.downmix_instructions_v1_count; n++)
{
ia_drc_downmix_instructions_struct *pstr_downmix_instructions_v1 =
&pstr_uni_drc_config->str_uni_drc_config_ext.str_downmix_instructions_v1[n];
pstr_downmix_instructions_v1->downmix_id = n + 1;
pstr_downmix_instructions_v1->target_ch_count = 1;
pstr_downmix_instructions_v1->target_layout = impd_drc_get_integer_value(fp);
pstr_downmix_instructions_v1->downmix_coefficients_present = 1;
if (pstr_downmix_instructions_v1->downmix_coefficients_present) {
FLOAT32 dwn_mix_coeff = 0.0f;
for (s = 0; s < pstr_downmix_instructions_v1->target_layout; s++) {
dwn_mix_coeff = impd_drc_get_float_value(fp);
for (ch = 0; ch < in_ch; ch++) {
pstr_downmix_instructions_v1->downmix_coeff[in_ch * s + ch] = dwn_mix_coeff;
}
}
}
}
}
pstr_uni_drc_config->str_uni_drc_config_ext.drc_coeffs_and_instructions_uni_drc_v1_present = 1;
if (pstr_uni_drc_config->str_uni_drc_config_ext.drc_coeffs_and_instructions_uni_drc_v1_present) {
/*********** str_drc_coefficients_uni_drc_v1 *************/
pstr_uni_drc_config->str_uni_drc_config_ext.drc_coefficients_uni_drc_v1_count = impd_drc_get_integer_value(fp);
pstr_uni_drc_config->str_uni_drc_config_ext.drc_coefficients_uni_drc_v1_count =
MIN(pstr_uni_drc_config->str_uni_drc_config_ext.drc_coefficients_uni_drc_v1_count, MAX_DRC_COEFF_COUNT);
for (n = 0; n < pstr_uni_drc_config->str_uni_drc_config_ext.drc_coefficients_uni_drc_v1_count; n++) {
ia_drc_coefficients_uni_drc_struct *pstr_drc_coefficients_uni_drc_v1 =
&pstr_uni_drc_config->str_uni_drc_config_ext.str_drc_coefficients_uni_drc_v1[n];
pstr_drc_coefficients_uni_drc_v1->drc_location = 1;
pstr_drc_coefficients_uni_drc_v1->gain_set_count = impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc_v1->gain_set_count =
MIN(pstr_drc_coefficients_uni_drc_v1->gain_set_count, GAIN_SET_COUNT_MAX);
for (s = 0; s < pstr_drc_coefficients_uni_drc_v1->gain_set_count; s++) {
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_coding_profile = 0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_interpolation_type = 1;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].full_frame = 0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].time_alignment = 0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].time_delta_min_present = 0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].band_count =
impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].band_count =
MIN(pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].band_count, MAX_BAND_COUNT);
if (pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].band_count == 1) {
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].nb_points =
impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].nb_points =
MIN(pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].nb_points,
MAX_GAIN_POINTS);
for (p = 0;
p < pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].nb_points;
p++) {
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].gain_points[p].x =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].gain_points[p].y =
impd_drc_get_float_value(fp);
}
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].width =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].attack =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].decay =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[0].drc_characteristic =
0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s]
.gain_params[0]
.crossover_freq_index = 0;
}
else {
for (m = 0; m < pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].band_count; m++) {
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].nb_points =
impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].nb_points =
MIN(pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].nb_points,
MAX_GAIN_POINTS);
for (p = 0;
p < pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].nb_points;
p++) {
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s]
.gain_params[m]
.gain_points[p]
.x = impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s]
.gain_params[m]
.gain_points[p]
.y = impd_drc_get_float_value(fp);
}
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].width =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].attack =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].gain_params[m].decay =
impd_drc_get_float_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s].drc_band_type = 0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s]
.gain_params[m]
.start_sub_band_index = impd_drc_get_integer_value(fp);
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s]
.gain_params[m]
.drc_characteristic = 0;
pstr_drc_coefficients_uni_drc_v1->str_gain_set_params[s]
.gain_params[m]
.crossover_freq_index = 0;
}
}
}
}
/*********** str_drc_instructions_uni_drc_v1 *************/
pstr_uni_drc_config->str_uni_drc_config_ext.drc_instructions_uni_drc_v1_count = impd_drc_get_integer_value(fp);
pstr_uni_drc_config->str_uni_drc_config_ext.drc_instructions_uni_drc_v1_count =
MIN(pstr_uni_drc_config->str_uni_drc_config_ext.drc_instructions_uni_drc_v1_count, MAX_DRC_INSTRUCTIONS_COUNT);
for (n = 0; n < pstr_uni_drc_config->str_uni_drc_config_ext.drc_instructions_uni_drc_v1_count; n++) {
ia_drc_instructions_uni_drc *pstr_drc_instructions_uni_drc =
&pstr_uni_drc_config->str_uni_drc_config_ext.str_drc_instructions_uni_drc_v1[n];
pstr_drc_instructions_uni_drc->drc_set_id = n + 1;
pstr_drc_instructions_uni_drc->downmix_id = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->additional_downmix_id_present = 0;
pstr_drc_instructions_uni_drc->additional_downmix_id_count = 0;
pstr_drc_instructions_uni_drc->drc_location = 1;
pstr_drc_instructions_uni_drc->depends_on_drc_set_present = 0;
pstr_drc_instructions_uni_drc->depends_on_drc_set = 0;
pstr_drc_instructions_uni_drc->no_independent_use = 0;
pstr_drc_instructions_uni_drc->drc_set_effect = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->drc_set_target_loudness_present = 0;
pstr_drc_instructions_uni_drc->drc_set_target_loudness_value_upper = 0;
pstr_drc_instructions_uni_drc->drc_set_target_loudness_value_lower_present = 0;
pstr_drc_instructions_uni_drc->drc_set_target_loudness_value_lower = 0;
gain_set_channels = impd_drc_get_integer_value(fp);
gain_set_channels = MIN(gain_set_channels, MAX_CHANNEL_COUNT);
for (ch = 0; ch < gain_set_channels; ch++) {
pstr_drc_instructions_uni_drc->gain_set_index[ch] = impd_drc_get_integer_value(fp);
}
for (; ch < MAX_CHANNEL_COUNT; ch++) {
if (gain_set_channels > 0) {
pstr_drc_instructions_uni_drc->gain_set_index[ch] =
pstr_drc_instructions_uni_drc->gain_set_index[gain_set_channels - 1];
}
else {
pstr_drc_instructions_uni_drc->gain_set_index[ch] = 0;
}
}
pstr_drc_instructions_uni_drc->num_drc_channel_groups = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->num_drc_channel_groups =
MIN(pstr_drc_instructions_uni_drc->num_drc_channel_groups, MAX_CHANNEL_GROUP_COUNT);
for (g = 0; g < pstr_drc_instructions_uni_drc->num_drc_channel_groups; g++) {
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].gain_scaling_present[0] = 0;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].attenuation_scaling[0] = 1.5f;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].amplification_scaling[0] = 1.5f;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].gain_offset_present[0] = 0;
pstr_drc_instructions_uni_drc->str_gain_modifiers[g].gain_offset[0] = 8.0f;
}
pstr_drc_instructions_uni_drc->limiter_peak_target_present = 0;
pstr_drc_instructions_uni_drc->limiter_peak_target = 0.0f;
pstr_drc_instructions_uni_drc->drc_instructions_type = 0;
pstr_drc_instructions_uni_drc->mae_group_id = 0;
pstr_drc_instructions_uni_drc->mae_group_preset_id = 0;
#ifdef LOUDNESS_LEVELING_SUPPORT
if (pstr_drc_instructions_uni_drc->drc_set_effect & EFFECT_BIT_DUCK_SELF) {
pstr_drc_instructions_uni_drc->leveling_present = impd_drc_get_integer_value(fp);
pstr_drc_instructions_uni_drc->ducking_only_set_present =
impd_drc_get_integer_value(fp);
loudness_leveling_extension_present = 1;
}
#endif // LOUDNESS_LEVELING_SUPPORT
}
}
}
#ifdef LOUDNESS_LEVELING_SUPPORT
if (loudness_leveling_extension_present) {
pstr_uni_drc_config->str_uni_drc_config_ext.uni_drc_config_ext_type[config_extension_count] =
UNIDRCCONFEXT_LEVELING;
config_extension_count++;
}
#endif
pstr_enc_loudness_info_set->loudness_info_set_ext_present = 0;
pstr_enc_gain_extension->uni_drc_gain_ext_present = 0;
}
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