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_ENV_EXTR_H 21 #define IXHEAACD_ENV_EXTR_H 22 #include "ixheaacd_error_standards.h" 23 #define ENV_EXP_FRACT 0 24 25 #define EXP_BITS 6 26 27 #define MASK_M (((1 << (SHORT_BITS - EXP_BITS)) - 1) << EXP_BITS) 28 #define MASK_FOR_EXP ((1 << EXP_BITS) - 1) 29 30 #define SIGN_EXT (((WORD8)-1) ^ MASK_FOR_EXP) 31 #define ROUNDING (1 << (EXP_BITS - 1)) 32 #define NRG_EXP_OFFSET 16 33 #define NOISE_EXP_OFFSET 38 34 35 typedef const UWORD16 *ia_huffman_data_type; 36 37 #define COUPLING_OFF 0 38 #define COUPLING_LEVEL 1 39 #define COUPLING_BAL 2 40 41 #define MAX_INVF_BANDS MAX_NOISE_COEFFS 42 43 typedef struct { 44 WORD16 sfb_nrg_prev[MAX_FREQ_COEFFS]; 45 WORD16 prev_noise_level[MAX_NOISE_COEFFS]; 46 WORD16 amp_res; 47 WORD16 end_position; 48 WORD32 max_qmf_subband_aac; 49 WORD32 coupling_mode; 50 WORD32 sbr_invf_mode[MAX_NUM_NOISE_VALUES]; 51 } ia_sbr_prev_frame_data_struct; 52 53 typedef struct { 54 WORD16 num_env_sfac; 55 ia_frame_info_struct str_frame_info_details; 56 WORD16 del_cod_dir_arr[MAX_ENVELOPES]; 57 WORD16 del_cod_dir_noise_arr[MAX_NOISE_ENVELOPES]; 58 WORD32 sbr_invf_mode[MAX_NUM_NOISE_VALUES]; 59 WORD32 coupling_mode; 60 WORD16 amp_res; 61 WORD32 max_qmf_subband_aac; 62 FLAG add_harmonics[MAX_FREQ_COEFFS]; 63 WORD16 int_env_sf_arr[MAX_NUM_ENVELOPE_VALUES]; 64 WORD16 int_noise_floor[MAX_NUM_NOISE_VALUES]; 65 WORD32 num_noise_sfac; 66 ia_frame_info_struct str_pvc_frame_info; 67 WORD32 env_short_flag_prev; 68 ia_sbr_header_data_struct *pstr_sbr_header; 69 WORD32 num_time_slots; 70 WORD32 rate; 71 WORD32 sbr_patching_mode; 72 WORD32 prev_sbr_patching_mode; 73 WORD32 over_sampling_flag; 74 WORD32 pitch_in_bins; 75 WORD32 pvc_mode; 76 77 WORD32 sbr_invf_mode_prev[MAX_NUM_NOISE_VALUES]; 78 FLOAT32 flt_env_sf_arr[MAX_NUM_ENVELOPE_VALUES]; 79 FLOAT32 flt_noise_floor[MAX_NUM_NOISE_VALUES]; 80 FLOAT32 sfb_nrg_prev[MAX_FREQ_COEFFS]; 81 FLOAT32 prev_noise_level[MAX_NUM_NOISE_VALUES]; 82 WORD32 inter_temp_shape_mode[MAX_ENVELOPES]; 83 WORD32 var_len; 84 WORD32 bs_sin_pos_present; 85 WORD32 sine_position; 86 WORD32 sin_start_for_next_top; 87 WORD32 sin_len_for_next_top; 88 WORD32 sin_start_for_cur_top; 89 WORD32 sin_len_for_cur_top; 90 WORD32 var_len_id_prev; 91 ia_frame_info_struct str_frame_info_prev; 92 FLOAT32 bw_array_prev[MAX_NUM_PATCHES]; 93 struct ixheaacd_lpp_trans_patch patch_param; 94 WORD32 harm_index; 95 WORD32 phase_index; 96 WORD8 harm_flag_prev[64]; 97 FLOAT32 e_gain[5][64]; 98 FLOAT32 noise_buf[5][64]; 99 WORD32 lim_table[4][12 + 1]; 100 WORD32 gate_mode[4]; 101 WORD8 harm_flag_varlen_prev[64]; 102 WORD8 harm_flag_varlen[64]; 103 FLOAT32 qmapped_pvc[64][48]; 104 FLOAT32 env_tmp[64][48]; 105 FLOAT32 noise_level_pvc[64][48]; 106 FLOAT32 nrg_est_pvc[64][48]; 107 FLOAT32 nrg_ref_pvc[64][48]; 108 FLOAT32 nrg_gain_pvc[64][48]; 109 FLOAT32 nrg_tone_pvc[64][48]; 110 WORD32 stereo_config_idx; 111 FLAG reset_flag; 112 FLAG mps_sbr_flag; 113 FLAG usac_independency_flag; 114 FLAG inter_tes_flag; 115 FLAG sbr_mode; 116 FLAG prev_sbr_mode; 117 WORD32 eld_sbr_flag; 118 119 } ia_sbr_frame_info_data_struct; 120 121 WORD8 ixheaacd_sbr_read_sce(ia_sbr_header_data_struct *ptr_header_data, 122 ia_sbr_frame_info_data_struct *ptr_frame_data, 123 ia_ps_dec_struct *ptr_ps_dec, 124 ia_bit_buf_struct *it_bit_buff, 125 ia_sbr_tables_struct *ptr_sbr_tables, 126 WORD audio_object_type); 127 128 WORD8 ixheaacd_sbr_read_cpe(ia_sbr_header_data_struct *ptr_header_data, 129 ia_sbr_frame_info_data_struct **ptr_frame_data, 130 ia_bit_buf_struct *itt_bit_buf, 131 ia_sbr_tables_struct *ptr_sbr_tables, 132 WORD audio_object_type); 133 134 WORD32 ixheaacd_sbr_read_header_data( 135 ia_sbr_header_data_struct *ptr_sbr_header, ia_bit_buf_struct *it_bit_buf, 136 FLAG stereo_flag, ia_sbr_header_data_struct *ptr_sbr_dflt_header); 137 138 WORD32 ixheaacd_ssc_huff_dec(ia_huffman_data_type h, 139 ia_bit_buf_struct *it_bit_buff); 140 141 int ixheaacd_extract_frame_info_ld(ia_bit_buf_struct *it_bit_buff, 142 ia_sbr_frame_info_data_struct *h_frame_data); 143 144 WORD32 ixheaacd_pvc_time_freq_grid_info( 145 ia_bit_buf_struct *it_bit_buff, 146 ia_sbr_frame_info_data_struct *ptr_frame_data); 147 148 WORD16 ixheaacd_sbr_time_freq_grid_info( 149 ia_bit_buf_struct *it_bit_buff, 150 ia_sbr_frame_info_data_struct *ptr_frame_data, 151 ia_env_extr_tables_struct *env_extr_tables_ptr); 152 153 WORD16 ixheaacd_read_sbr_env_data( 154 ia_sbr_header_data_struct *ptr_header_data, 155 ia_sbr_frame_info_data_struct *ptr_frame_data, 156 ia_bit_buf_struct *it_bit_buff, 157 ia_env_extr_tables_struct *env_extr_tables_ptr, WORD audio_object_type); 158 159 VOID ixheaacd_sbr_env_dtdf_data(ia_sbr_frame_info_data_struct *ptr_frame_data, 160 ia_bit_buf_struct *it_bit_buff, 161 WORD32 usac_flag); 162 163 VOID ixheaacd_read_sbr_noise_floor_data( 164 ia_sbr_header_data_struct *ptr_header_data, 165 ia_sbr_frame_info_data_struct *ptr_frame_data, 166 ia_bit_buf_struct *it_bit_buff, 167 ia_env_extr_tables_struct *env_extr_tables_ptr); 168 169 VOID ixheaacd_huffman_decode(WORD32 it_bit_buff, WORD16 *h_index, WORD16 *len, 170 const UWORD16 *input_table, 171 const UWORD32 *idx_table); 172 173 IA_ERRORCODE ixheaacd_createlimiterbands( 174 WORD32 lim_table[4][12 + 1], WORD32 gate_mode[4], WORD16 *freq_band_tbl, 175 WORD32 ixheaacd_num_bands, WORD32 x_over_qmf[MAX_NUM_PATCHES], 176 WORD32 b_patching_mode, WORD32 upsamp_4_flag, 177 struct ixheaacd_lpp_trans_patch *patch_param); 178 179 VOID ixheaacd_apply_inter_tes(FLOAT32 *qmf_real1, FLOAT32 *qmf_imag1, 180 FLOAT32 *qmf_real, FLOAT32 *qmf_imag, 181 WORD32 num_sample, WORD32 sub_band_start, 182 WORD32 num_subband, WORD32 gamma_idx); 183 184 #endif 185
