impeghe_drc_uni_drc.h

/* 	Copyright (c) [2022] Ittiam Systems Pvt. Ltd.
   All rights reserved.

   Redistribution and use in source and binary forms, with or without
   modification, are permitted (subject to the limitations in the
   disclaimer below) provided that the following conditions are met:
   •	Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
   •	Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
   •	Neither the names of Dolby Laboratories, Inc. (or its affiliates),
   Ittiam Systems Pvt. Ltd. nor the names of its contributors may be used
   to endorse or promote products derived from this software without
   specific prior written permission.

   NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED
   BY THIS LICENSE. YOUR USE OF THE SOFTWARE MAY REQUIRE ADDITIONAL PATENT
   LICENSE(S) BY THIRD PARTIES, INCLUDING, WITHOUT LIMITATION, DOLBY
   LABORATORIES, INC. OR ANY OF ITS AFFILIATES. THIS SOFTWARE IS PROVIDED
   BY ITTIAM SYSTEMS LTD. AND ITS CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
   IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   IN NO EVENT SHALL ITTIAM SYSTEMS LTD OR ITS CONTRIBUTORS BE LIABLE FOR
   ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
   IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   POSSIBILITY OF SUCH DAMAGE.
---------------------------------------------------------------
*/

#ifndef IMPEGHE_DRC_UNI_DRC_H
#define IMPEGHE_DRC_UNI_DRC_H

/* Defines for bitstream payload */
#define METHOD_DEFINITION_UNKNOWN_OTHER 0
#define METHOD_DEFINITION_PROGRAM_LOUDNESS 1
#define METHOD_DEFINITION_ANCHOR_LOUDNESS 2
#define METHOD_DEFINITION_MAX_OF_LOUDNESS_RANGE 3
#define METHOD_DEFINITION_MOMENTARY_LOUDNESS_MAX 4
#define METHOD_DEFINITION_SHORT_TERM_LOUDNESS_MAX 5
#define METHOD_DEFINITION_LOUDNESS_RANGE 6
#define METHOD_DEFINITION_MIXING_LEVEL 7
#define METHOD_DEFINITION_ROOM_TYPE 8
#define METHOD_DEFINITION_SHORT_TERM_LOUDNESS 9

#define MEASUREMENT_SYSTEM_UNKNOWN_OTHER 0
#define MEASUREMENT_SYSTEM_EBU_R_128 1
#define MEASUREMENT_SYSTEM_BS_1770_3 2
#define MEASUREMENT_SYSTEM_BS_1770_3_PRE_PROCESSING 3
#define MEASUREMENT_SYSTEM_USER 4
#define MEASUREMENT_SYSTEM_EXPERT_PANEL 5
#define MEASUREMENT_SYSTEM_BS_1771_1 6
#define MEASUREMENT_SYSTEM_RESERVED_A 7
#define MEASUREMENT_SYSTEM_RESERVED_B 8
#define MEASUREMENT_SYSTEM_RESERVED_C 9
#define MEASUREMENT_SYSTEM_RESERVED_D 10
#define MEASUREMENT_SYSTEM_RESERVED_E 11

#define RELIABILITY_UKNOWN 0
#define RELIABILITY_UNVERIFIED 1
#define RELIABILITY_CEILING 2
#define RELIABILITY_ACCURATE 3

#define EFFECT_BIT_COUNT 12

#define EFFECT_BIT_NONE (-1) /* this effect bit is virtual */
#define EFFECT_BIT_NIGHT 0x0001
#define EFFECT_BIT_NOISY 0x0002
#define EFFECT_BIT_LIMITED 0x0004
#define EFFECT_BIT_LOWLEVEL 0x0008
#define EFFECT_BIT_DIALOG 0x0010
#define EFFECT_BIT_GENERAL_COMPR 0x0020
#define EFFECT_BIT_EXPAND 0x0040
#define EFFECT_BIT_ARTISTIC 0x0080
#define EFFECT_BIT_CLIPPING 0x0100
#define EFFECT_BIT_FADE 0x0200
#define EFFECT_BIT_DUCK_OTHER 0x0400
#define EFFECT_BIT_DUCK_SELF 0x0800

#define GAIN_CODING_PROFILE_REGULAR 0
#define GAIN_CODING_PROFILE_FADING 1
#define GAIN_CODING_PROFILE_CLIPPING 2
#define GAIN_CODING_PROFILE_CONSTANT 3
#define GAIN_CODING_PROFILE_DUCKING GAIN_CODING_PROFILE_CLIPPING

#define GAIN_INTERPOLATION_TYPE_SPLINE 0
#define GAIN_INTERPOLATION_TYPE_LINEAR 1

#define LOUDNESS_DEVIATION_MAX_DEFAULT 63
#define LOUDNESS_NORMALIZATION_GAIN_MAX_DEFAULT 1000 /* infinity as default */
#define GAIN_SET_COUNT_MAX 8                         /* reduced size */

#define LEFT_SIDE 0
#define RIGHT_SIDE 1
#define SPLIT_CHARACTERISTIC_COUNT_MAX 8
#define SPLIT_CHARACTERISTIC_MAX_NODE_COUNT 4 /* one side of characteristic */

#define GAINFORMAT_QMF32 0x1
#define GAINFORMAT_QMFHYBRID39 0x2
#define GAINFORMAT_QMF64 0x3
#define GAINFORMAT_QMFHYBRID71 0x4
#define GAINFORMAT_QMF128 0x5
#define GAINFORMAT_QMFHYBRID135 0x6
#define GAINFORMAT_UNIFORM 0x7

#define EQ_PURPOSE_GENERIC 1
#define EQ_PURPOSE_LARGE_ROOM 2
#define EQ_PURPOSE_SMALL_SPACE 3

#define DRC_INPUT_LOUDNESS_TARGET (-31.0f) /* dB */

#define SHAPE_FILTER_COUNT_MAX 8

#define SHAPE_FILTER_TYPE_OFF 0
#define SHAPE_FILTER_TYPE_LF_CUT 1
#define SHAPE_FILTER_TYPE_LF_BOOST 2
#define SHAPE_FILTER_TYPE_HF_CUT 3
#define SHAPE_FILTER_TYPE_HF_BOOST 4

#define SHAPE_FILTER_DRC_GAIN_MAX_MINUS_ONE 1583.8931924611f /* 10^3.2 - 1 */

#define DOWNMIX_INSTRUCTIONS_COUNT_MAX 8       /* reduced size */
#define DRC_COEFFICIENTS_UNIDRC_V1_COUNT_MAX 2 /* reduced size */
#define DRC_INSTRUCTIONS_UNIDRC_V1_COUNT_MAX 8 /* reduced size */
#define DRC_MAX_BAND_COUNT MAX_BAND_COUNT
#define SPLIT_CHARACTERISTIC_COUNT_MAX 8 /* reduced size */
#define SHAPE_FILTER_COUNT_MAX 8         /* reduced size */
#define ADDITIONAL_DOWNMIX_ID_COUNT_MAX MAX_ADDITIONAL_DOWNMIX_ID
#define ADDITIONAL_DRC_SET_ID_COUNT_MAX 16
#define ADDITIONAL_EQ_SET_ID_COUNT_MAX 8
#define LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT 4
#define FILTER_ELEMENT_COUNT_MAX 16 /* reduced size */
#define REAL_ZERO_RADIUS_ONE_COUNT_MAX 14
#define REAL_ZERO_COUNT_MAX 64
#define COMPLEX_ZERO_COUNT_MAX 64
#define REAL_POLE_COUNT_MAX 16
#define COMPLEX_POLE_COUNT_MAX 16
#define FIR_ORDER_MAX 128
#define EQ_MAX_NODE_COUNT 33
#define EQ_SUBBAND_GAIN_COUNT_MAX 135
#define UNIQUE_SUBBAND_GAIN_COUNT_MAX 16 /* reduced size */
#define FILTER_BLOCK_COUNT_MAX 16
#define FILTER_ELEMENT_COUNT_MAX 16      /* reduced size */
#define UNIQUE_SUBBAND_GAINS_COUNT_MAX 8 /* reduced size */
#define EQ_MAX_CHANNEL_GROUP_COUNT 4     /* reduced size */
#define EQ_FILTER_BLOCK_COUNT_MAX 4      /* reduced size */
#define LOUD_EQ_INSTRUCTIONS_COUNT_MAX 8 /* reduced size */
#define EQ_INSTRUCTIONS_COUNT_MAX 8

#define DRC_COMPLEXITY_LEVEL_MAX 15
#define EQ_COMPLEXITY_LEVEL_MAX 15
#define COMPLEXITY_W_SUBBAND_EQ 2.5f
#define COMPLEXITY_W_FIR 0.4f
#define COMPLEXITY_W_IIR 5.0f
#define COMPLEXITY_W_MOD_TIME 1.0f
#define COMPLEXITY_W_MOD_SUBBAND 2.0f
#define COMPLEXITY_W_LAP 2.0f
#define COMPLEXITY_W_SHAPE 6.0f
#define COMPLEXITY_W_SPLINE 5.0f
#define COMPLEXITY_W_LINEAR 2.5f
#define COMPLEXITY_W_PARAM_DRC_FILT 5.0f
#define COMPLEXITY_W_PARAM_DRC_SUBBAND 5.0f
#define COMPLEXITY_W_PARAM_LIM_FILT 4.5f
#define COMPLEXITY_W_PARAM_DRC_ATTACK 136.0f

typedef struct
{
  WORD32 level_estim_k_weighting_type;
  WORD32 level_estim_integration_time_present;
  WORD32 level_estim_integration_time;
  WORD32 drc_curve_definition_type;
  WORD32 drc_characteristic;
  WORD32 node_count;
  WORD32 node_level[MAX_PARAM_DRC_TYPE_FF_NODE_COUNT];
  WORD32 node_gain[MAX_PARAM_DRC_TYPE_FF_NODE_COUNT];
  WORD32 drc_gain_smooth_parameters_present;
  WORD32 gain_smooth_attack_time_slow;
  WORD32 gain_smooth_release_time_slow;
  WORD32 gain_smooth_time_fast_present;
  WORD32 gain_smooth_attack_time_fast;
  WORD32 gain_smooth_release_time_fast;
  WORD32 gain_smooth_threshold_present;
  WORD32 gain_smooth_attack_threshold;
  WORD32 gain_smooth_release_threshold;
  WORD32 gain_smooth_hold_off_count_present;
  WORD32 gain_smooth_hold_off;
  WORD32 disable_paramtric_drc;
} ia_drc_parametric_drc_type_feed_forward_struct;

typedef struct
{
  WORD32 parametric_lim_threshold_present;
  FLOAT32 parametric_lim_threshold;
  WORD32 parametric_lim_attack;
  WORD32 parametric_lim_release_present;
  WORD32 parametric_lim_release;
  WORD32 drc_characteristic;
  WORD32 disable_paramtric_drc;
} ia_drc_parametric_drc_type_lim_struct;

typedef struct
{
  WORD32 parametric_drc_id;
  WORD32 parametric_drc_look_ahead_present;
  WORD32 parametric_drc_look_ahead;
  WORD32 parametric_drc_preset_id_present;
  WORD32 parametric_drc_preset_id;
  WORD32 parametric_drc_type;
  WORD32 len_bit_size;
  ia_drc_parametric_drc_type_feed_forward_struct str_parametric_drc_type_feed_forward;
  ia_drc_parametric_drc_type_lim_struct str_parametric_drc_type_lim;
  WORD32 disable_paramtric_drc;
} ia_drc_parametric_drc_instructions_struct;

typedef struct
{
  WORD32 parametric_drc_id;
  WORD32 side_chain_config_type;
  WORD32 downmix_id;
  WORD32 level_estim_channel_weight_format;
  FLOAT32 level_estim_channel_weight[MAX_CHANNEL_COUNT];
  WORD32 drc_input_loudness_present;
  FLOAT32 drc_input_loudness;

  /* derived data */
  WORD32 channel_count_drom_downmix_id;
} ia_drc_parametric_drc_gain_set_params_struct;

typedef struct
{
  WORD32 drc_location;
  WORD32 parametric_drc_frame_size_format;
  WORD32 parametric_drc_frame_size;
  WORD32 parametric_drc_delay_max_present;
  WORD32 parametric_drc_delay_max;
  WORD32 reset_parametric_drc;
  WORD32 parametric_drc_gain_set_count;
  ia_drc_parametric_drc_gain_set_params_struct parametric_drc_gain_set_params[MAX_SEQUENCE_COUNT];
} ia_drc_coeff_parametric_drc_struct;

typedef struct
{
  WORD32 base_ch_count;
  WORD32 layout_signaling_present;
  WORD32 defined_layout;
  WORD32 speaker_position[MAX_SPEAKER_POS_COUNT];
} ia_drc_channel_layout_struct;

typedef struct
{
  WORD32 downmix_id;
  WORD32 target_ch_count;
  WORD32 target_layout;
  WORD32 downmix_coefficients_present;
  FLOAT32 downmix_coeff[MAX_DOWNMIX_COEFF_COUNT];
} ia_drc_downmix_instructions_struct;

typedef struct
{
  FLOAT32 x;
  FLOAT32 y;
} ia_drc_gain_points_struct;

typedef struct
{
  WORD32 gain_sequence_index;
  WORD32 drc_characteristic_present;
  WORD32 drc_characteristic_format_is_cicp;
  WORD32 drc_characteristic;
  WORD32 drc_characteristic_left_index;
  WORD32 drc_characteristic_right_index;
  WORD32 crossover_freq_index;
  WORD32 start_sub_band_index;
  WORD32 nb_points;
  FLOAT32 width;
  FLOAT32 attack;
  FLOAT32 decay;
  ia_drc_gain_points_struct gain_points[512];
} ia_drc_gain_params_struct;

typedef struct
{
  WORD32 ducking_scaling_present;
  FLOAT32 ducking_scaling;
  FLOAT32 ducking_scaling_quantized;
} ia_drc_ducking_modifiers_struct;

typedef struct
{
  WORD32 target_characteristic_left_present[MAX_BAND_COUNT];
  WORD32 target_characteristic_left_index[MAX_BAND_COUNT];
  WORD32 target_characteristic_right_present[MAX_BAND_COUNT];
  WORD32 target_characteristic_right_index[MAX_BAND_COUNT];
  WORD32 shape_filter_present;
  WORD32 shape_filter_index;

  WORD32 gain_scaling_present[MAX_BAND_COUNT];
  FLOAT32 attenuation_scaling[MAX_BAND_COUNT];
  FLOAT32 amplification_scaling[MAX_BAND_COUNT];
  WORD32 gain_offset_present[MAX_BAND_COUNT];
  FLOAT32 gain_offset[MAX_BAND_COUNT];

} ia_drc_gain_modifiers_struct;

typedef struct
{
  WORD32 gain_coding_profile;
  WORD32 gain_interpolation_type;
  WORD32 full_frame;
  WORD32 time_alignment;
  WORD32 time_delta_min_present;
  WORD32 delta_tmin;
  WORD32 band_count;
  WORD32 drc_band_type;
  ia_drc_gain_params_struct gain_params[MAX_BAND_COUNT];
} ia_drc_gain_set_params_struct;

typedef struct
{
  WORD32 characteristic_format;
  WORD32 bs_gain;
  WORD32 bs_io_ratio;
  WORD32 bs_exp;
  WORD32 flip_sign;
  WORD32 characteristic_node_count;
  FLOAT32 node_level[SPLIT_CHARACTERISTIC_MAX_NODE_COUNT + 1];
  FLOAT32 node_gain[SPLIT_CHARACTERISTIC_MAX_NODE_COUNT + 1];
} ia_drc_split_drc_characteristic_struct;

typedef struct
{
  WORD32 corner_freq_index;
  WORD32 filter_strength_index;
} ia_drc_shape_filter_params_struct;

typedef struct
{
  WORD32 lf_cut_filter_present;
  ia_drc_shape_filter_params_struct str_lf_cut_params;
  WORD32 lf_boost_filter_present;
  ia_drc_shape_filter_params_struct str_lf_boost_params;
  WORD32 hf_cut_filter_present;
  ia_drc_shape_filter_params_struct str_hf_cut_params;
  WORD32 hf_boost_filter_present;
  ia_drc_shape_filter_params_struct str_hf_boost_params;
} ia_drc_shape_filter_block_params_struct;

typedef struct
{
  WORD32 drc_location;
  WORD32 drc_characteristic;
} ia_drc_coefficients_basic_struct;

typedef struct
{
  WORD32 drc_location;
  WORD32 drc_frame_size_present;
  WORD32 drc_frame_size;
  WORD32 drc_characteristic_left_present;
  WORD32 characteristic_left_count;
  ia_drc_split_drc_characteristic_struct
      str_split_characteristic_left[SPLIT_CHARACTERISTIC_COUNT_MAX + 1];
  WORD32 drc_characteristic_right_present;
  WORD32 characteristic_right_count;
  ia_drc_split_drc_characteristic_struct
      str_split_characteristic_right[SPLIT_CHARACTERISTIC_COUNT_MAX];
  WORD32 shape_filters_present;
  WORD32 shape_filter_count;
  ia_drc_shape_filter_block_params_struct
      str_shape_filter_block_params[SHAPE_FILTER_COUNT_MAX + 1];
  WORD32 gain_sequence_count;
  WORD32 gain_set_count;
  ia_drc_gain_set_params_struct str_gain_set_params[GAIN_SET_COUNT_MAX];
} ia_drc_coefficients_uni_drc_struct;

typedef struct
{
  WORD32 drc_set_id;
  WORD32 drc_location;
  WORD32 downmix_id;
  WORD32 additional_downmix_id_present;
  WORD32 additional_downmix_id_count;
  WORD32 additional_downmix_id[MAX_ADDITIONAL_DOWNMIX_ID];
  WORD32 drc_set_effect;
  WORD32 limiter_peak_target_present;
  FLOAT32 limiter_peak_target;
  WORD32 drc_set_target_loudness_present;
  WORD32 drc_set_target_loudness_value_upper;
  WORD32 drc_set_target_loudness_value_lower_present;
  WORD32 drc_set_target_loudness_value_lower;
} ia_drc_instructions_basic_struct;

typedef struct
{
  WORD32 drc_set_id;
  WORD32 drc_set_complexity_level;
  WORD32 drc_apply_to_downmix;
  WORD32 requires_eq;
  WORD32 downmix_id_present;
  WORD32 drc_location;
  WORD32 downmix_id;
  WORD32 additional_downmix_id_present;
  WORD32 additional_downmix_id_count;
  WORD32 additional_downmix_id[MAX_ADDITIONAL_DOWNMIX_ID];
  WORD32 depends_on_drc_set_present;
  WORD32 depends_on_drc_set;
  WORD32 no_independent_use;
  WORD32 drc_set_effect;
  WORD32 gain_set_index[MAX_CHANNEL_COUNT];
  ia_drc_gain_modifiers_struct str_gain_modifiers[MAX_CHANNEL_GROUP_COUNT];
  ia_drc_ducking_modifiers_struct str_ducking_modifiers_for_channel[MAX_CHANNEL_COUNT];
  WORD32 limiter_peak_target_present;
  FLOAT32 limiter_peak_target;
  WORD32 drc_set_target_loudness_present;
  WORD32 drc_set_target_loudness_value_upper;
  WORD32 drc_set_target_loudness_value_lower_present;
  WORD32 drc_set_target_loudness_value_lower;
  WORD32 drc_instructions_type;
  WORD32 mae_group_id;
  WORD32 mae_group_preset_id;

  WORD32 drc_channel_count;
  WORD32 num_drc_channel_groups;
  WORD32 gain_set_index_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 band_count_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 gain_coding_profile_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 gain_interpolation_type_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 time_delta_min_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 time_alignment_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  ia_drc_ducking_modifiers_struct
      str_ducking_modifiers_for_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 channel_group_for_channel[MAX_CHANNEL_COUNT];
  WORD32 num_channels_per_channel_group[MAX_CHANNEL_GROUP_COUNT];
  WORD32 gain_element_count;
  WORD32 multiband_audio_signal_count;
  WORD32 channel_group_is_parametric_drc[MAX_CHANNEL_GROUP_COUNT];
  WORD32 gain_set_idx_for_ch_group_parametric_drc[MAX_CHANNEL_GROUP_COUNT];
} ia_drc_instructions_uni_drc;

typedef struct
{
  WORD32 method_definition;
  FLOAT32 method_value;
  WORD32 measurement_system;
  WORD32 reliability;
} ia_drc_loudness_measure_struct;

typedef struct
{
  WORD32 drc_set_id;
  WORD32 eq_set_id;
  WORD32 downmix_id;
  WORD32 sample_peak_level_present;
  FLOAT32 sample_peak_level;
  WORD32 true_peak_level_present;
  FLOAT32 true_peak_level;
  WORD32 true_peak_level_measurement_system;
  WORD32 true_peak_level_reliability;
  WORD32 measurement_count;
  ia_drc_loudness_measure_struct str_loudness_measure[MAX_MEASUREMENT_COUNT];
  WORD32 loudness_info_type;
  WORD32 mae_group_id;
  WORD32 mae_group_preset_id;
} ia_drc_loudness_info_struct;

typedef struct
{
  WORD32 loud_eq_set_id;
  WORD32 drc_location;
  WORD32 downmix_id_present;
  WORD32 downmix_id;
  WORD32 additional_downmix_id_present;
  WORD32 additional_downmix_id_count;
  WORD32 additional_downmix_id[ADDITIONAL_DOWNMIX_ID_COUNT_MAX];
  WORD32 drc_set_id_present;
  WORD32 drc_set_id;
  WORD32 additional_drc_set_id_present;
  WORD32 additional_drc_set_id_count;
  WORD32 additional_drc_set_id[ADDITIONAL_DRC_SET_ID_COUNT_MAX];
  WORD32 eq_set_id_present;
  WORD32 eq_set_id;
  WORD32 additional_eq_set_id_present;
  WORD32 additional_eq_set_id_count;
  WORD32 additional_eq_set_id[ADDITIONAL_EQ_SET_ID_COUNT_MAX];
  WORD32 loudness_after_drc;
  WORD32 loudness_after_eq;
  WORD32 loud_eq_gain_sequence_count;
  WORD32 gain_sequence_index[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  WORD32 drc_characteristic_format_is_cicp[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  WORD32 drc_characteristic[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  WORD32 drc_characteristic_left_index[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  WORD32 drc_characteristic_right_index[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  WORD32 frequency_range_index[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  FLOAT32 loud_eq_scaling[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
  FLOAT32 loud_eq_offset[LOUD_EQ_GAIN_MAX_SEQUENCE_COUNT];
} ia_drc_loud_eq_instructions_struct;

typedef struct
{
  WORD32 filter_element_index;
  WORD32 filter_element_gain_present;
  FLOAT32 filter_element_gain;
} ia_drc_filter_element_struct;

typedef struct
{
  WORD32 filter_element_count;
  ia_drc_filter_element_struct filter_element[FILTER_ELEMENT_COUNT_MAX];
} ia_drc_filter_block_struct;

typedef struct
{
  WORD32 eq_filter_format;
  WORD32 real_zero_radius_one_count;
  WORD32 real_zero_count;
  WORD32 generic_zero_count;
  WORD32 real_pole_count;
  WORD32 complex_pole_count;
  FLOAT32 zero_sign[REAL_ZERO_RADIUS_ONE_COUNT_MAX];
  FLOAT32 real_zero_radius[REAL_ZERO_COUNT_MAX];
  FLOAT32 generic_zero_radius[COMPLEX_ZERO_COUNT_MAX];
  FLOAT32 generic_zero_angle[COMPLEX_ZERO_COUNT_MAX];
  FLOAT32 real_pole_radius[REAL_POLE_COUNT_MAX];
  FLOAT32 complex_pole_radius[COMPLEX_POLE_COUNT_MAX];
  FLOAT32 complex_pole_angle[COMPLEX_POLE_COUNT_MAX];
  WORD32 fir_filter_order;
  WORD32 fir_symmetry;
  FLOAT32 fir_coefficient[FIR_ORDER_MAX / 2];
} ia_drc_unique_td_filter_element_struct;

typedef struct
{
  WORD32 n_eq_nodes;
  FLOAT32 eq_slope[EQ_MAX_NODE_COUNT];
  WORD32 eq_freq_delta[EQ_MAX_NODE_COUNT];
  FLOAT32 eq_gain_initial;
  FLOAT32 eq_gain_delta[EQ_MAX_NODE_COUNT];
} ia_drc_eq_subband_gain_spline_struct;

typedef struct
{
  WORD32 eq_subband_gain[EQ_SUBBAND_GAIN_COUNT_MAX];
} ia_drc_eq_subband_gain_vector_struct;

typedef struct
{
  WORD32 eq_delay_max_present;
  WORD32 eq_delay_max;
  WORD32 unique_filter_block_count;
  ia_drc_filter_block_struct str_filter_block[FILTER_BLOCK_COUNT_MAX];
  WORD32 unique_td_filter_element_count;
  ia_drc_unique_td_filter_element_struct str_unique_td_filter_element[FILTER_ELEMENT_COUNT_MAX];
  WORD32 unique_eq_subband_gains_count;
  WORD32 eq_subband_gain_representation;
  WORD32 eq_subband_gain_format;
  WORD32 eq_subband_gain_count;
  ia_drc_eq_subband_gain_spline_struct str_eq_subband_gain_spline[UNIQUE_SUBBAND_GAIN_COUNT_MAX];
  ia_drc_eq_subband_gain_vector_struct str_eq_subband_gain_vector[UNIQUE_SUBBAND_GAIN_COUNT_MAX];
} ia_drc_eq_coefficients_struct;

typedef struct
{
  WORD32 filter_block_count;
  WORD32 filter_block_index[EQ_FILTER_BLOCK_COUNT_MAX];
} ia_drc_filter_block_refs_struct;

typedef struct
{
  WORD32 eq_cascade_gain_present[EQ_MAX_CHANNEL_GROUP_COUNT];
  WORD32 eq_cascade_gain[EQ_MAX_CHANNEL_GROUP_COUNT];
  ia_drc_filter_block_refs_struct str_filter_block_refs[EQ_MAX_CHANNEL_GROUP_COUNT];
  WORD32 eq_phase_alignment_present;
  WORD32 eq_phase_alignment[EQ_MAX_CHANNEL_GROUP_COUNT][EQ_MAX_CHANNEL_GROUP_COUNT];
} ia_drc_td_filter_cascade_struct;

typedef struct
{
  WORD32 eq_set_id;
  WORD32 eq_set_complexity_level;
  WORD32 downmix_id_present;
  WORD32 downmix_id;
  WORD32 eq_apply_to_downmix;
  WORD32 additional_downmix_id_present;
  WORD32 additional_downmix_id_count;
  WORD32 additional_downmix_id[ADDITIONAL_DOWNMIX_ID_COUNT_MAX];
  WORD32 drc_set_id;
  WORD32 additional_drc_set_id_present;
  WORD32 additional_drc_set_id_count;
  WORD32 additional_drc_set_id[ADDITIONAL_DRC_SET_ID_COUNT_MAX];
  WORD32 eq_set_purpose;
  WORD32 depends_on_eq_set_present;
  WORD32 depends_on_eq_set;
  WORD32 no_independent_eq_use;
  WORD32 eq_channel_count;
  WORD32 eq_channel_group_count;
  WORD32 eq_channel_group_for_channel[MAX_CHANNEL_COUNT];
  WORD32 td_filter_cascade_present;
  ia_drc_td_filter_cascade_struct str_td_filter_cascade;
  WORD32 subband_gains_present;
  WORD32 subband_gains_index[EQ_MAX_CHANNEL_GROUP_COUNT];
  WORD32 eq_transition_duration_present;
  FLOAT32 eq_transition_duration;
} ia_drc_eq_instructions_struct;

typedef struct
{
  WORD32 uni_drc_config_ext_type[MAX_EXT_COUNT];
  WORD32 ext_bit_size[MAX_EXT_COUNT - 1];
  /* UNIDRC_CONF_EXT_PARAM_DRC */
  WORD32 parametric_drc_present;
  ia_drc_coeff_parametric_drc_struct str_drc_coeff_parametric_drc;
  WORD32 parametric_drc_instructions_count;
  ia_drc_parametric_drc_instructions_struct
      str_parametric_drc_instructions[MAX_PARAM_DRC_INSTRUCTIONS_COUNT];

  /* UNIDRC_CONF_EXT_V1 */
  WORD32 drc_extension_v1_present;
  WORD32 downmix_instructions_v1_present;
  WORD32 downmix_instructions_v1_count;
  ia_drc_downmix_instructions_struct str_downmix_instructions_v1[DOWNMIX_INSTRUCTIONS_COUNT_MAX];
  WORD32 drc_coeffs_and_instructions_uni_drc_v1_present;
  WORD32 drc_coefficients_uni_drc_v1_count;
  ia_drc_coefficients_uni_drc_struct
      str_drc_coefficients_uni_drc_v1[DRC_COEFFICIENTS_UNIDRC_V1_COUNT_MAX];
  WORD32 drc_instructions_uni_drc_v1_count;
  ia_drc_instructions_uni_drc
      str_drc_instructions_uni_drc_v1[DRC_INSTRUCTIONS_UNIDRC_V1_COUNT_MAX];
  WORD32 loud_eq_instructions_present;
  WORD32 loud_eq_instructions_count;
  ia_drc_loud_eq_instructions_struct str_loud_eq_instructions[LOUD_EQ_INSTRUCTIONS_COUNT_MAX];
  WORD32 eq_present;
  ia_drc_eq_coefficients_struct str_eq_coefficients;
  WORD32 eq_instructions_count;
  ia_drc_eq_instructions_struct str_eq_instructions[EQ_INSTRUCTIONS_COUNT_MAX];
} ia_drc_uni_drc_config_ext_struct;

typedef struct
{
  WORD32 sample_rate_present;
  WORD32 sample_rate;
  WORD32 downmix_instructions_count;
  WORD32 drc_coefficients_uni_drc_count;
  WORD32 drc_instructions_uni_drc_count;
  WORD32 drc_instructions_count_plus;
  WORD32 drc_description_basic_present;
  WORD32 drc_coefficients_basic_count;
  WORD32 drc_instructions_basic_count;
  WORD32 uni_drc_config_ext_present;
  ia_drc_uni_drc_config_ext_struct str_uni_drc_config_ext;
  ia_drc_coefficients_basic_struct str_drc_coefficients_basic[MAX_DRC_COEFF_COUNT];
  ia_drc_instructions_basic_struct str_drc_instructions_basic[MAX_DRC_INSTRUCTIONS_COUNT];
  ia_drc_coefficients_uni_drc_struct str_drc_coefficients_uni_drc[MAX_DRC_COEFF_COUNT];
  ia_drc_instructions_uni_drc str_drc_instructions_uni_drc[MAX_DRC_INSTRUCTIONS_COUNT];
  ia_drc_channel_layout_struct str_channel_layout;
  ia_drc_downmix_instructions_struct str_downmix_instructions[MAX_DOWNMIX_INSTRUCTION_COUNT];
  WORD32 loudness_info_set_present;
} ia_drc_uni_drc_config_struct;

typedef struct
{
  WORD32 loudness_info_v1_album_count;
  WORD32 loudness_info_v1_count;
  ia_drc_loudness_info_struct str_loudness_info_v1_album[MAX_LOUDNESS_INFO_COUNT];
  ia_drc_loudness_info_struct str_loudness_info_v1[MAX_LOUDNESS_INFO_COUNT];
} ia_drc_loudness_info_set_ext_eq_struct;

typedef struct
{
  WORD32 loudness_info_set_ext_type[MAX_EXT_COUNT];
  WORD32 ext_bit_size[MAX_EXT_COUNT - 1];
  ia_drc_loudness_info_set_ext_eq_struct str_loudness_info_set_ext_eq;
} ia_drc_loudness_info_set_extension_struct;

typedef struct
{
  WORD32 loudness_info_album_count;
  WORD32 loudness_info_count;
  WORD32 loudness_info_set_ext_present;
  ia_drc_loudness_info_struct str_loudness_info_album[MAX_LOUDNESS_INFO_COUNT];
  ia_drc_loudness_info_struct str_loudness_info[MAX_LOUDNESS_INFO_COUNT];
  ia_drc_loudness_info_set_extension_struct str_loudness_info_set_extension;
} ia_drc_loudness_info_set_struct;

typedef struct
{
  WORD32 uni_drc_gain_ext_present;
  WORD32 uni_drc_gain_ext_type[MAX_EXT_COUNT];
  WORD32 ext_bit_size[MAX_EXT_COUNT - 1];
} ia_drc_uni_drc_gain_ext_struct;

#endif /*IMPEGHE_DRC_UNI_DRC_H*/