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 RED_EXP_VAL 0.25f 23 #define INV_RED_EXP_VAL (1.0f / RED_EXP_VAL) 24 #define MIN_SNR_LIMIT 0.8f 25 26 #define MAX_SCF_DELTA 60 27 28 #define LOG2_1 1.442695041f 29 #define C1_SF -69.33295f /* -16/3*log(MAX_QUANT+0.5-logCon)/log(2) */ 30 #define C2_SF 5.77078f /* 4/log(2) */ 31 32 #define PE_C1 3.0f /* log(8.0)/log(2) */ 33 #define PE_C2 1.3219281f /* log(2.5)/log(2) */ 34 #define PE_C3 0.5593573f /* 1-C2/C1 */ 35 36 #define CLIP_SAVE_LO_TO_HI_LONG (CLIP_SAVE_HI_LONG - CLIP_SAVE_LO_LONG) 37 #define CLIP_SAVE_LO_TO_HI_SHORT (CLIP_SAVE_HI_SHORT - CLIP_SAVE_LO_SHORT) 38 #define CLIP_SPEND_LO_TO_HI_LONG (CLIP_SPEND_HI_LONG - CLIP_SPEND_LO_LONG) 39 #define CLIP_SPEND_LO_TO_HI_SHORT (CLIP_SPEND_HI_SHORT - CLIP_SPEND_LO_SHORT) 40 #define MIN_TO_MAX_SAVE_BITS_LONG (MAX_BITS_SAVE_LONG - MIN_BITS_SAVE_LONG) 41 #define MIN_TO_MAX_SAVE_BITS_SHORT (MAX_BITS_SAVE_SHORT - MIN_BITS_SAVE_SHORT) 42 #define MIN_TO_MAX_SPEND_BITS_LONG (MAX_BITS_SPEND_LONG - MIN_BITS_SPEND_LONG) 43 #define MIN_TO_MAX_SPEND_BITS_SHORT (MAX_BITS_SPEND_SHORT - MIN_BITS_SPEND_SHORT) 44 #define BITS_SAVE_RATIO_LONG (MIN_TO_MAX_SAVE_BITS_LONG / CLIP_SAVE_LO_TO_HI_LONG) 45 #define BITS_SAVE_RATIO_SHORT (MIN_TO_MAX_SAVE_BITS_SHORT / CLIP_SAVE_LO_TO_HI_SHORT) 46 #define BITS_SPEND_RATIO_LONG (MIN_TO_MAX_SPEND_BITS_LONG / CLIP_SPEND_LO_TO_HI_LONG) 47 #define BITS_SPEND_RATIO_SHORT (MIN_TO_MAX_SPEND_BITS_SHORT / CLIP_SPEND_LO_TO_HI_SHORT) 48 49 #define MAX_GAIN_INDEX (128) 50 #define MIN_GAIN_INDEX (-128) 51 #define SCF_COUNT_LIMIT_ONE (1) 52 #define SCF_COUNT_LIMIT_THREE (3) 53 54 typedef struct { 55 FLOAT32 *sfb_ld_energy; 56 FLOAT32 *sfb_lines; 57 FLOAT32 sfb_pe[MAX_GROUPED_SFB_TEMP]; 58 FLOAT32 sfb_const_part[MAX_GROUPED_SFB_TEMP]; 59 FLOAT32 num_sfb_active_lines[MAX_GROUPED_SFB_TEMP]; 60 FLOAT32 pe; 61 FLOAT32 const_part; 62 FLOAT32 num_active_lines; 63 } ia_qc_pe_chan_data_struct; 64 65 typedef struct { 66 ia_qc_pe_chan_data_struct pe_ch_data[30]; 67 FLOAT32 pe; 68 FLOAT32 const_part; 69 FLOAT32 num_active_lines; 70 FLOAT32 offset; 71 } ia_qc_pe_data_struct; 72 73 enum ia_avoid_hole_state { NO_AH = 0, AH_INACTIVE = 1, AH_ACTIVE = 2 }; 74 75 typedef enum { 76 SI_ID_BITS = (3), 77 SI_FILL_COUNT_BITS = (4), 78 SI_FILL_ESC_COUNT_BITS = (8), 79 SI_FILL_EXTENTION_BITS = (4), 80 SI_FILL_NIBBLE_BITS = (4), 81 SI_SCE_BITS = (4), 82 SI_CPE_BITS = (5), 83 SI_CPE_MS_MASK_BITS = (2), 84 SI_ICS_INFO_BITS_LONG = (1 + 2 + 6), 85 SI_ICS_INFO_BITS_SHORT = (1 + 2 + 4 + 7), 86 SI_ICS_BITS = (8 + 1 + 1 + 1), 87 } SI_BITS; 88 89 FLOAT32 iusace_bits_to_pe(const FLOAT32 bits); 90 91 VOID iusace_adj_thr_init(ia_adj_thr_elem_struct *pstr_adj_thr_state, const FLOAT32 mean_pe, 92 WORD32 ch_bitrate); 93 94 IA_ERRORCODE iusace_adj_thr(ia_adj_thr_elem_struct *pstr_adj_thr_elem, 95 ia_psy_mod_out_data_struct *pstr_psy_out, FLOAT32 *ch_bit_dist, 96 ia_qc_out_data_struct *pstr_qc_out, const WORD32 avg_bits, 97 const WORD32 bitres_bits, const WORD32 max_bitres_bits, 98 const WORD32 side_info_bits, FLOAT32 *max_bit_fac, 99 WORD32 num_channels, WORD32 chn, iusace_scratch_mem *pstr_scratch); 100 101 VOID iusace_calc_form_fac_per_chan(ia_psy_mod_out_data_struct *pstr_psy_out_chan, 102 iusace_scratch_mem *pstr_scratch, WORD32 i_ch); 103 104 VOID iusace_estimate_scfs_chan(ia_psy_mod_out_data_struct *pstr_psy_out, 105 ia_qc_out_chan_struct *str_qc_out_chan, WORD32 num_channels, 106 WORD32 chn, iusace_scratch_mem *pstr_scratch); 107 108 VOID iusace_quantize_lines(const WORD32 gain, const WORD32 num_lines, FLOAT32 *ptr_exp_spectrum, 109 WORD16 *ptr_quant_spectrum, FLOAT32 *ptr_mdct_spec); 110