1 /****************************************************************************** 2 * * 3 * Copyright (C) 2023 The Android Open Source Project 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ***************************************************************************** 18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore 19 */ 20 21 #pragma once 22 typedef struct { 23 WORD32 sample_rate; 24 WORD32 num_sfb_long; 25 WORD32 num_sfb_short; 26 const WORD16 *cb_offset_long; 27 const WORD16 *cb_offset_short; 28 WORD32 sfb_width_long[MAX_SFB_LONG]; 29 WORD32 sfb_width_short[MAX_SFB_SHORT]; 30 31 } ia_sfb_info_struct; 32 33 VOID iusace_psy_long_config_init(WORD32 bit_rate, WORD32 sample_rate, WORD32 band_width, 34 ia_psy_mod_long_config_struct *pstr_psy_config, WORD32 ccfl); 35 VOID iusace_psy_short_config_init(WORD32 bit_rate, WORD32 sample_rate, WORD32 band_width, 36 ia_psy_mod_short_config_struct *pstr_psy_config, WORD32 ccfl); 37 VOID iusace_calc_band_energy(const FLOAT64 *ptr_spec_coeffs, const WORD32 *band_offset, 38 const WORD32 num_bands, FLOAT32 *ptr_band_energy, WORD32 sfb_count); 39 VOID iusace_find_max_spreading(const WORD32 sfb_count, const FLOAT32 *ptr_mask_low_fac, 40 const FLOAT32 *ptr_mask_high_fac, FLOAT32 *ptr_spreaded_enegry); 41 VOID iusace_pre_echo_control(FLOAT32 *ptr_thr_nm1, WORD32 sfb_count, FLOAT32 max_allowed_inc_fac, 42 FLOAT32 min_remaining_thr_fac, FLOAT32 *ptr_threshold); 43 44 IA_ERRORCODE iusace_sfb_params_init(WORD32 sample_rate, WORD32 frame_len, WORD32 *ptr_sfb_width, 45 WORD32 *num_sfb, WORD32 win_seq); 46 47 WORD32 iusace_map_sample_rate(WORD32 sample_rate); 48