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/******************************************************************************
*
* Copyright (C) 2015 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
*/
#ifndef IMPD_DRC_UNI_GAIN_DEC_H
#define IMPD_DRC_UNI_GAIN_DEC_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
ia_node_struct str_node;
ia_node_struct prev_node;
FLOAT32 lpcm_gains[2 * AUDIO_CODEC_FRAME_SIZE_MAX + MAX_SIGNAL_DELAY];
} ia_interp_buf_struct;
typedef struct {
#if DRC_GAIN_DEBUG_FILE
FILE* f_gain_debug;
#endif
WORD32 buf_interpolation_count;
ia_interp_buf_struct* buf_interpolation;
} ia_gain_buffer_struct;
typedef struct {
ia_gain_buffer_struct pstr_gain_buf[SEL_DRC_COUNT];
} ia_drc_gain_buffers_struct;
typedef struct {
WORD32 gain_interpolation_type;
WORD32 gain_modification_flag;
WORD32 ducking_flag;
WORD32 clipping_flag;
ia_ducking_modifiers_struct* pstr_ducking_modifiers;
ia_gain_modifiers_struct* pstr_gain_modifiers;
WORD32 limiter_peak_target_present;
FLOAT32 limiter_peak_target;
FLOAT32 loudness_normalization_gain_db;
WORD32 delta_tmin;
WORD32 characteristic_index;
FLOAT32 compress;
FLOAT32 boost;
} ia_interp_params_struct;
typedef struct {
WORD32 drc_instructions_index;
WORD32 drc_coeff_idx;
WORD32 dwnmix_instructions_index;
} ia_sel_drc_struct;
typedef struct {
WORD32 sample_rate;
WORD32 delta_tmin_default;
WORD32 drc_frame_size;
WORD32 delay_mode;
WORD32 sub_band_domain_mode;
WORD32 gain_delay_samples;
WORD32 audio_delay_samples;
WORD32 drc_set_counter;
WORD32 multiband_sel_drc_idx;
ia_sel_drc_struct sel_drc_array[SEL_DRC_COUNT];
} ia_drc_params_struct;
WORD32
impd_gain_buf_init(WORD32 index, WORD32 gain_element_count,
WORD32 drc_frame_size, ia_gain_buffer_struct* pstr_gain_buf);
WORD32
impd_advance_buf(WORD32 drc_frame_size, ia_gain_buffer_struct* pstr_gain_buf);
WORD32
impd_map_gain(FLOAT32 gain_in_db, FLOAT32* gain_out_db);
WORD32
impd_conv_to_linear_domain(ia_interp_params_struct* interp_params_str,
WORD32 drc_band, FLOAT32 loc_db_gain,
FLOAT32 in_param_db_slope,
FLOAT32* out_param_lin_gain,
FLOAT32* out_param_lin_slope);
WORD32
impd_interpolate_drc_gain(ia_interp_params_struct* interp_params_str,
WORD32 drc_band, WORD32 gain_step_tdomain,
FLOAT32 gain0, FLOAT32 gain1, FLOAT32 slope0,
FLOAT32 slope1, FLOAT32* result);
WORD32
impd_concatenate_segments(WORD32 drc_frame_size, WORD32 drc_band,
ia_interp_params_struct* interp_params_str,
ia_spline_nodes_struct* str_spline_nodes,
ia_interp_buf_struct* buf_interpolation);
#ifdef __cplusplus
}
#endif
#endif
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