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 #define TEMPORAL_NOISE_SHAPING_MAX_ORDER (12) 23 #define TEMPORAL_NOISE_SHAPING_MAX_ORDER_SHORT (5) 24 #define TEMPORAL_NOISE_SHAPING_START_FREQ (1275) 25 #define TEMPORAL_NOISE_SHAPING_START_FREQ_SHORT (2750) 26 #define TEMPORAL_NOISE_SHAPING_COEF_RES (4) 27 #define TEMPORAL_NOISE_SHAPING_COEF_RES_SHORT (3) 28 #define FILTER_DIRECTION (0) 29 #define PI_BY_1000 (0.00314159265358979323f) 30 #define TEMPORAL_NOISE_SHAPING_MODIFY_BEGIN 2600 /* Hz */ 31 #define RATIO_PATCH_LOWER_BORDER 380 /* Hz */ 32 #define INT_BITS 32 33 typedef struct { 34 WORD32 channel_bit_rate; 35 WORD32 bandwidth_mono; 36 WORD32 bandwidth_stereo; 37 } ixheaace_bandwidth_table; 38 typedef struct { 39 FLOAT32 thresh_on; 40 WORD32 lpc_start_freq; 41 WORD32 lpc_stop_freq; 42 FLOAT32 tns_time_resolution; 43 } ixheaace_temporal_noise_shaping_config_tabulated; 44 45 typedef struct { 46 WORD8 tns_active; 47 WORD32 tns_max_sfb; 48 WORD32 max_order; 49 WORD32 tns_start_freq; 50 WORD32 coef_res; 51 ixheaace_temporal_noise_shaping_config_tabulated conf_tab; 52 FLOAT32 acf_window_float[TEMPORAL_NOISE_SHAPING_MAX_ORDER + 1]; 53 WORD32 tns_start_band; 54 WORD32 tns_start_line; 55 WORD32 tns_stop_band; 56 WORD32 tns_stop_line; 57 WORD32 lpc_start_band; 58 WORD32 lpc_start_line; 59 WORD32 lpc_stop_band; 60 WORD32 lpc_stop_line; 61 WORD32 tns_ratio_patch_lowest_cb; 62 WORD32 tns_modify_begin_cb; 63 FLOAT32 threshold; 64 } ixheaace_temporal_noise_shaping_config; 65 66 typedef struct { 67 WORD8 tns_active; 68 FLOAT32 parcor[TEMPORAL_NOISE_SHAPING_MAX_ORDER]; 69 FLOAT32 prediction_gain; 70 } ixheaace_temporal_noise_shaping_subblock_info_long; 71 72 typedef struct { 73 WORD8 tns_active; 74 FLOAT32 parcor[TEMPORAL_NOISE_SHAPING_MAX_ORDER]; 75 FLOAT32 prediction_gain; 76 } ixheaace_temporal_noise_shaping_subblock_info_short; 77 78 typedef struct { 79 ixheaace_temporal_noise_shaping_subblock_info_short sub_block_info[TRANS_FAC]; 80 } ixheaace_temporal_noise_shaping_data_short; 81 82 typedef struct { 83 ixheaace_temporal_noise_shaping_subblock_info_long sub_block_info; 84 } ixheaace_temporal_noise_shaping_data_long; 85 86 typedef struct { 87 ixheaace_temporal_noise_shaping_data_long tns_data_long; 88 ixheaace_temporal_noise_shaping_data_short tns_data_short; 89 } ixheaace_temporal_noise_shaping_data_raw; 90 91 typedef struct { 92 WORD32 numOfSubblocks; 93 ixheaace_temporal_noise_shaping_data_raw data_raw; 94 } ixheaace_temporal_noise_shaping_data; 95 96 typedef struct { 97 WORD8 tns_active[TRANS_FAC]; 98 WORD8 coef_res[TRANS_FAC]; 99 WORD32 length[TRANS_FAC]; 100 WORD32 order[TRANS_FAC]; 101 WORD32 coef[TRANS_FAC * TEMPORAL_NOISE_SHAPING_MAX_ORDER_SHORT]; 102 } ixheaace_temporal_noise_shaping_params; 103