1 /****************************************************************************** 2 * * 3 * Copyright (C) 2018 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 #ifndef IXHEAACD_PEAK_LIMITER_STRUCT_DEF_H 21 #define IXHEAACD_PEAK_LIMITER_STRUCT_DEF_H 22 23 #define PEAK_LIM_SIZE (1024 * 16) 24 #define DEFAULT_ATTACK_TIME_MS (5.0f) 25 #define DEFAULT_RELEASE_TIME_MS (50.0f) 26 #define PEAK_LIM_THR_FLOAT (29203.6f) 27 #define PEAK_LIM_THR_FIX (2147483647) 28 29 typedef struct ia_peak_limiter_struct { 30 FLOAT32 attack_time; 31 FLOAT32 release_time; 32 FLOAT32 attack_constant; 33 FLOAT32 release_constant; 34 FLOAT32 limit_threshold; 35 UWORD32 num_channels; 36 UWORD32 sample_rate; 37 UWORD32 attack_time_samples; 38 UWORD32 limiter_on; 39 FLOAT32 gain_modified; 40 FLOAT64 pre_smoothed_gain; 41 FLOAT32 *delayed_input; 42 UWORD32 delayed_input_index; 43 FLOAT32 *max_buf; 44 FLOAT32 min_gain; 45 FLOAT32 buffer[PEAK_LIM_SIZE]; 46 WORD32 max_idx; 47 WORD32 cir_buf_pnt; 48 } ia_peak_limiter_struct; 49 50 #endif /* IXHEAACD_PEAK_LIMITER_STRUCT_DEF_H */ 51