| /****************************************************************************** |
| * * |
| * Copyright (C) 2023 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ***************************************************************************** |
| * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore |
| */ |
| |
| #pragma once |
| #define RED_EXP_VAL 0.25f |
| #define INV_RED_EXP_VAL (1.0f / RED_EXP_VAL) |
| #define MIN_SNR_LIMIT 0.8f |
| |
| #define MAX_SCF_DELTA 60 |
| |
| #define LOG2_1 1.442695041f |
| #define C1_SF -69.33295f /* -16/3*log(MAX_QUANT+0.5-logCon)/log(2) */ |
| #define C2_SF 5.77078f /* 4/log(2) */ |
| |
| #define PE_C1 3.0f /* log(8.0)/log(2) */ |
| #define PE_C2 1.3219281f /* log(2.5)/log(2) */ |
| #define PE_C3 0.5593573f /* 1-C2/C1 */ |
| |
| #define CLIP_SAVE_LO_TO_HI_LONG (CLIP_SAVE_HI_LONG - CLIP_SAVE_LO_LONG) |
| #define CLIP_SAVE_LO_TO_HI_SHORT (CLIP_SAVE_HI_SHORT - CLIP_SAVE_LO_SHORT) |
| #define CLIP_SPEND_LO_TO_HI_LONG (CLIP_SPEND_HI_LONG - CLIP_SPEND_LO_LONG) |
| #define CLIP_SPEND_LO_TO_HI_SHORT (CLIP_SPEND_HI_SHORT - CLIP_SPEND_LO_SHORT) |
| #define MIN_TO_MAX_SAVE_BITS_LONG (MAX_BITS_SAVE_LONG - MIN_BITS_SAVE_LONG) |
| #define MIN_TO_MAX_SAVE_BITS_SHORT (MAX_BITS_SAVE_SHORT - MIN_BITS_SAVE_SHORT) |
| #define MIN_TO_MAX_SPEND_BITS_LONG (MAX_BITS_SPEND_LONG - MIN_BITS_SPEND_LONG) |
| #define MIN_TO_MAX_SPEND_BITS_SHORT (MAX_BITS_SPEND_SHORT - MIN_BITS_SPEND_SHORT) |
| #define BITS_SAVE_RATIO_LONG (MIN_TO_MAX_SAVE_BITS_LONG / CLIP_SAVE_LO_TO_HI_LONG) |
| #define BITS_SAVE_RATIO_SHORT (MIN_TO_MAX_SAVE_BITS_SHORT / CLIP_SAVE_LO_TO_HI_SHORT) |
| #define BITS_SPEND_RATIO_LONG (MIN_TO_MAX_SPEND_BITS_LONG / CLIP_SPEND_LO_TO_HI_LONG) |
| #define BITS_SPEND_RATIO_SHORT (MIN_TO_MAX_SPEND_BITS_SHORT / CLIP_SPEND_LO_TO_HI_SHORT) |
| |
| #define MAX_GAIN_INDEX (128) |
| #define MIN_GAIN_INDEX (-128) |
| #define SCF_COUNT_LIMIT_ONE (1) |
| #define SCF_COUNT_LIMIT_THREE (3) |
| |
| typedef struct { |
| FLOAT32 *sfb_ld_energy; |
| FLOAT32 *sfb_lines; |
| FLOAT32 sfb_pe[MAX_GROUPED_SFB_TEMP]; |
| FLOAT32 sfb_const_part[MAX_GROUPED_SFB_TEMP]; |
| FLOAT32 num_sfb_active_lines[MAX_GROUPED_SFB_TEMP]; |
| FLOAT32 pe; |
| FLOAT32 const_part; |
| FLOAT32 num_active_lines; |
| } ia_qc_pe_chan_data_struct; |
| |
| typedef struct { |
| ia_qc_pe_chan_data_struct pe_ch_data[30]; |
| FLOAT32 pe; |
| FLOAT32 const_part; |
| FLOAT32 num_active_lines; |
| FLOAT32 offset; |
| } ia_qc_pe_data_struct; |
| |
| enum ia_avoid_hole_state { NO_AH = 0, AH_INACTIVE = 1, AH_ACTIVE = 2 }; |
| |
| typedef enum { |
| SI_ID_BITS = (3), |
| SI_FILL_COUNT_BITS = (4), |
| SI_FILL_ESC_COUNT_BITS = (8), |
| SI_FILL_EXTENTION_BITS = (4), |
| SI_FILL_NIBBLE_BITS = (4), |
| SI_SCE_BITS = (4), |
| SI_CPE_BITS = (5), |
| SI_CPE_MS_MASK_BITS = (2), |
| SI_ICS_INFO_BITS_LONG = (1 + 2 + 6), |
| SI_ICS_INFO_BITS_SHORT = (1 + 2 + 4 + 7), |
| SI_ICS_BITS = (8 + 1 + 1 + 1), |
| } SI_BITS; |
| |
| FLOAT32 iusace_bits_to_pe(const FLOAT32 bits); |
| |
| VOID iusace_adj_thr_init(ia_adj_thr_elem_struct *pstr_adj_thr_state, const FLOAT32 mean_pe, |
| WORD32 ch_bitrate); |
| |
| IA_ERRORCODE iusace_adj_thr(ia_adj_thr_elem_struct *pstr_adj_thr_elem, |
| ia_psy_mod_out_data_struct *pstr_psy_out, FLOAT32 *ch_bit_dist, |
| ia_qc_out_data_struct *pstr_qc_out, const WORD32 avg_bits, |
| const WORD32 bitres_bits, const WORD32 max_bitres_bits, |
| const WORD32 side_info_bits, FLOAT32 *max_bit_fac, |
| WORD32 num_channels, WORD32 chn, iusace_scratch_mem *pstr_scratch); |
| |
| VOID iusace_calc_form_fac_per_chan(ia_psy_mod_out_data_struct *pstr_psy_out_chan, |
| iusace_scratch_mem *pstr_scratch, WORD32 i_ch); |
| |
| VOID iusace_estimate_scfs_chan(ia_psy_mod_out_data_struct *pstr_psy_out, |
| ia_qc_out_chan_struct *str_qc_out_chan, WORD32 num_channels, |
| WORD32 chn, iusace_scratch_mem *pstr_scratch); |
| |
| VOID iusace_quantize_lines(const WORD32 gain, const WORD32 num_lines, FLOAT32 *ptr_exp_spectrum, |
| WORD16 *ptr_quant_spectrum, FLOAT32 *ptr_mdct_spec); |