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 23 #define LOG2_1 1.442695041f /* 1/log(2) */ 24 25 VOID iaace_calc_form_fac_per_chan(FLOAT32 *ptr_sfb_form_factor, 26 FLOAT32 *ptr_sfb_num_relevant_lines, 27 ixheaace_psy_out_channel *pstr_psy_out_chan, 28 FLOAT32 *ptr_sfb_ld_energy); 29 30 VOID iaace_estimate_scfs_chan( 31 ixheaace_psy_out_channel **pstr_psy_out_ch, 32 ixheaace_qc_out_channel **pstr_qc_out_ch, 33 FLOAT32 sfb_form_factor_ch[IXHEAACE_MAX_CH_IN_BS_ELE][MAXIMUM_GROUPED_SCALE_FACTOR_BAND], 34 FLOAT32 sfb_num_relevant_lines_ch[][MAXIMUM_GROUPED_SCALE_FACTOR_BAND], WORD32 num_channels, 35 WORD32 chn, WORD32 frame_len_long); 36