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 #include <stdlib.h> 21 #include "impd_type_def.h" 22 #include "impd_drc_extr_delta_coded_info.h" 23 #include "impd_drc_common.h" 24 #include "impd_drc_struct.h" 25 #include "impd_parametric_drc_dec.h" 26 #include "impd_drc_gain_dec.h" 27 #include "impd_drc_filter_bank.h" 28 #include "impd_drc_multi_band.h" 29 30 WORD32 impd_init_drc_params(WORD32 frame_size, WORD32 sample_rate, 31 WORD32 gain_delay_samples, WORD32 delay_mode, 32 WORD32 sub_band_domain_mode, 33 ia_drc_params_struct* ia_drc_params_struct) { 34 WORD32 k; 35 if (frame_size < 1 || frame_size > AUDIO_CODEC_FRAME_SIZE_MAX) { 36 return -1; 37 } 38 39 if (sample_rate < 1000) { 40 return -1; 41 } 42 43 ia_drc_params_struct->drc_frame_size = frame_size; 44 45 if (ia_drc_params_struct->drc_frame_size < 0.001f * sample_rate) { 46 return -1; 47 } 48 49 ia_drc_params_struct->sample_rate = sample_rate; 50 51 ia_drc_params_struct->delta_tmin_default = impd_get_delta_tmin(sample_rate); 52 53 if (ia_drc_params_struct->delta_tmin_default > 54 ia_drc_params_struct->drc_frame_size) { 55 return -1; 56 } 57 58 if ((delay_mode != DELAY_MODE_REGULAR_DELAY) && 59 (delay_mode != DELAY_MODE_LOW_DELAY)) { 60 return -1; 61 } 62 63 ia_drc_params_struct->delay_mode = delay_mode; 64 65 ia_drc_params_struct->drc_set_counter = 0; 66 ia_drc_params_struct->multiband_sel_drc_idx = -1; 67 68 for (k = 0; k < SEL_DRC_COUNT; k++) { 69 ia_drc_params_struct->sel_drc_array[k].drc_instructions_index = -1; 70 ia_drc_params_struct->sel_drc_array[k].dwnmix_instructions_index = -1; 71 ia_drc_params_struct->sel_drc_array[k].drc_coeff_idx = -1; 72 } 73 74 if ((gain_delay_samples > MAX_SIGNAL_DELAY) || (gain_delay_samples < 0)) { 75 return -1; 76 } else { 77 ia_drc_params_struct->gain_delay_samples = gain_delay_samples; 78 } 79 80 switch (sub_band_domain_mode) { 81 case SUBBAND_DOMAIN_MODE_OFF: 82 case SUBBAND_DOMAIN_MODE_QMF64: 83 case SUBBAND_DOMAIN_MODE_QMF71: 84 case SUBBAND_DOMAIN_MODE_STFT256: 85 ia_drc_params_struct->sub_band_domain_mode = sub_band_domain_mode; 86 break; 87 default: 88 return -1; 89 break; 90 } 91 92 ia_drc_params_struct->parametric_drc_delay = 0; 93 ia_drc_params_struct->eq_delay = 0; 94 95 return 0; 96 } 97 98 WORD32 impd_select_drc_coefficients( 99 ia_drc_config* drc_config, ia_uni_drc_coeffs_struct** drc_coefficients_drc, 100 WORD32* drc_coefficients_selected) { 101 WORD32 i; 102 WORD32 cof1 = -1; 103 WORD32 cof0 = -1; 104 for (i = 0; i < drc_config->drc_coefficients_drc_count; i++) { 105 if (drc_config->str_p_loc_drc_coefficients_uni_drc[i].drc_location == 1) { 106 if (drc_config->str_p_loc_drc_coefficients_uni_drc[i].version == 0) { 107 cof0 = i; 108 *drc_coefficients_selected = cof0; 109 } else { 110 cof1 = i; 111 *drc_coefficients_selected = cof1; 112 } 113 } 114 } 115 116 if (cof1 >= 0) { 117 *drc_coefficients_drc = 118 &(drc_config->str_p_loc_drc_coefficients_uni_drc[cof1]); 119 } else if (cof0 >= 0) { 120 *drc_coefficients_drc = 121 &(drc_config->str_p_loc_drc_coefficients_uni_drc[cof0]); 122 } else { 123 *drc_coefficients_drc = NULL; 124 } 125 126 return 0; 127 } 128 129 WORD32 impd_init_selected_drc_set( 130 ia_drc_config* drc_config, ia_drc_params_struct* ia_drc_params_struct, 131 ia_parametric_drc_params_struct* p_parametric_drc_params, 132 WORD32 audio_num_chan, WORD32 drc_set_id_selected, 133 WORD32 downmix_id_selected, ia_filter_banks_struct* ia_filter_banks_struct, 134 ia_overlap_params_struct* pstr_overlap_params 135 136 , 137 shape_filter_block* shape_filter_block) { 138 WORD32 g, n, c, err = 0; 139 WORD32 channel_count = 0; 140 WORD32 i; 141 142 ia_drc_instructions_struct* drc_instructions_uni_drc = NULL; 143 ia_uni_drc_coeffs_struct* drc_coefficients_uni_drc = NULL; 144 WORD32 selected_drc_is_multiband = 0; 145 WORD32 drc_instructions_selected = -1; 146 WORD32 downmix_instructions_selected = -1; 147 WORD32 drc_coefficients_selected = -1; 148 p_parametric_drc_params->parametric_drc_instance_count = 0; 149 150 if (drc_config->drc_coefficients_drc_count && 151 drc_config->str_p_loc_drc_coefficients_uni_drc->drc_frame_size_present) { 152 if (drc_config->str_p_loc_drc_coefficients_uni_drc->drc_frame_size != 153 ia_drc_params_struct->drc_frame_size) { 154 return -1; 155 } 156 } 157 158 for (n = 0; n < drc_config->drc_instructions_count_plus; n++) { 159 if (drc_config->str_drc_instruction_str[n].drc_set_id == 160 drc_set_id_selected) 161 break; 162 } 163 if (n == drc_config->drc_instructions_count_plus) { 164 return -1; 165 } 166 drc_instructions_selected = n; 167 drc_instructions_uni_drc = 168 &(drc_config->str_drc_instruction_str[drc_instructions_selected]); 169 170 if (downmix_id_selected == ID_FOR_BASE_LAYOUT) { 171 channel_count = drc_config->channel_layout.base_channel_count; 172 } else if (downmix_id_selected == ID_FOR_ANY_DOWNMIX) { 173 channel_count = audio_num_chan; 174 } else { 175 for (n = 0; n < drc_config->dwnmix_instructions_count; n++) { 176 if (drc_config->dwnmix_instructions[n].downmix_id == downmix_id_selected) 177 break; 178 } 179 if (n == drc_config->dwnmix_instructions_count) { 180 return (UNEXPECTED_ERROR); 181 } 182 channel_count = drc_config->dwnmix_instructions[n].target_channel_count; 183 184 downmix_instructions_selected = n; 185 } 186 drc_instructions_uni_drc->audio_num_chan = channel_count; 187 188 if (drc_instructions_uni_drc->drc_set_id <= 0) { 189 drc_coefficients_selected = 0; 190 } else { 191 err = impd_select_drc_coefficients(drc_config, &drc_coefficients_uni_drc, 192 &drc_coefficients_selected); 193 } 194 195 ia_drc_params_struct->sel_drc_array[ia_drc_params_struct->drc_set_counter] 196 .drc_instructions_index = drc_instructions_selected; 197 ia_drc_params_struct->sel_drc_array[ia_drc_params_struct->drc_set_counter] 198 .dwnmix_instructions_index = downmix_instructions_selected; 199 ia_drc_params_struct->sel_drc_array[ia_drc_params_struct->drc_set_counter] 200 .drc_coeff_idx = drc_coefficients_selected; 201 202 if ((drc_instructions_uni_drc->downmix_id[0] == ID_FOR_ANY_DOWNMIX) || 203 (drc_instructions_uni_drc->dwnmix_id_count > 1)) { 204 WORD32 idx = drc_instructions_uni_drc->gain_set_index[0]; 205 for (c = 0; c < drc_instructions_uni_drc->audio_num_chan; c++) { 206 drc_instructions_uni_drc->channel_group_of_ch[c] = (idx >= 0) ? 0 : -1; 207 } 208 } 209 210 for (g = 0; g < drc_instructions_uni_drc->num_drc_ch_groups; g++) { 211 drc_instructions_uni_drc->num_chan_per_ch_group[g] = 0; 212 for (c = 0; c < drc_instructions_uni_drc->audio_num_chan; c++) { 213 if (drc_instructions_uni_drc->channel_group_of_ch[c] == g) { 214 drc_instructions_uni_drc->num_chan_per_ch_group[g]++; 215 } 216 } 217 } 218 219 if (drc_instructions_uni_drc->drc_set_effect & 220 (EFFECT_BIT_DUCK_OTHER | EFFECT_BIT_DUCK_SELF)) { 221 drc_instructions_uni_drc->multiband_audio_sig_count = 222 drc_instructions_uni_drc->audio_num_chan; 223 } else { 224 drc_instructions_uni_drc->multiband_audio_sig_count = 0; 225 for (c = 0; c < drc_instructions_uni_drc->audio_num_chan; c++) { 226 g = drc_instructions_uni_drc->channel_group_of_ch[c]; 227 if (g < 0) { 228 drc_instructions_uni_drc->multiband_audio_sig_count++; 229 } else { 230 drc_instructions_uni_drc->multiband_audio_sig_count += 231 drc_instructions_uni_drc->band_count_of_ch_group[g]; 232 } 233 } 234 } 235 236 for (g = 0; g < drc_instructions_uni_drc->num_drc_ch_groups; g++) { 237 if (g == 0) { 238 drc_instructions_uni_drc->parametric_drc_look_ahead_samples_max = 0; 239 } 240 if (drc_instructions_uni_drc->ch_group_parametric_drc_flag[g] == 0) { 241 if (drc_instructions_uni_drc->band_count_of_ch_group[g] > 1) { 242 if (ia_drc_params_struct->multiband_sel_drc_idx != -1) { 243 return (UNEXPECTED_ERROR); 244 } 245 selected_drc_is_multiband = 1; 246 } 247 } else { 248 WORD32 gain_set_index = 249 drc_instructions_uni_drc->gain_set_idx_of_ch_group_parametric_drc[g]; 250 WORD32 parametric_drc_id = 251 drc_config->str_drc_config_ext.str_drc_coeff_param_drc 252 .str_parametric_drc_gain_set_params[gain_set_index] 253 .parametric_drc_id; 254 WORD32 parametric_drc_look_ahead_samples = 0; 255 ia_parametric_drc_instructions_struct* str_parametric_drc_instructions; 256 257 for (i = 0; 258 i < drc_config->str_drc_config_ext.parametric_drc_instructions_count; 259 i++) { 260 if (parametric_drc_id == 261 drc_config->str_drc_config_ext.str_parametric_drc_instructions[i] 262 .parametric_drc_id) 263 break; 264 } 265 if (i == 266 drc_config->str_drc_config_ext.parametric_drc_instructions_count) { 267 return (UNEXPECTED_ERROR); 268 } 269 str_parametric_drc_instructions = 270 &drc_config->str_drc_config_ext.str_parametric_drc_instructions[i]; 271 272 p_parametric_drc_params->parametric_drc_idx 273 [p_parametric_drc_params->parametric_drc_instance_count] = i; 274 p_parametric_drc_params->gain_set_index 275 [p_parametric_drc_params->parametric_drc_instance_count] = 276 gain_set_index; 277 if (drc_instructions_uni_drc->drc_apply_to_dwnmix == 0) { 278 p_parametric_drc_params->dwnmix_id_from_drc_instructions 279 [p_parametric_drc_params->parametric_drc_instance_count] = 280 ID_FOR_BASE_LAYOUT; 281 } else { 282 if (drc_instructions_uni_drc->dwnmix_id_count > 1) { 283 p_parametric_drc_params->dwnmix_id_from_drc_instructions 284 [p_parametric_drc_params->parametric_drc_instance_count] = 285 ID_FOR_ANY_DOWNMIX; 286 } else { 287 p_parametric_drc_params->dwnmix_id_from_drc_instructions 288 [p_parametric_drc_params->parametric_drc_instance_count] = 289 drc_instructions_uni_drc->downmix_id[0]; 290 } 291 } 292 p_parametric_drc_params->audio_num_chan = channel_count; 293 for (i = 0; i < p_parametric_drc_params->audio_num_chan; i++) { 294 if (drc_instructions_uni_drc->channel_group_of_ch[i] == g) { 295 p_parametric_drc_params->channel_map 296 [p_parametric_drc_params->parametric_drc_instance_count][i] = 1; 297 } else { 298 p_parametric_drc_params->channel_map 299 [p_parametric_drc_params->parametric_drc_instance_count][i] = 0; 300 } 301 } 302 drc_instructions_uni_drc->parametric_drc_look_ahead_samples[g] = 0; 303 if (str_parametric_drc_instructions->parametric_drc_look_ahead_flag) { 304 parametric_drc_look_ahead_samples = (WORD32)( 305 (FLOAT32) 306 str_parametric_drc_instructions->parametric_drc_look_ahead * 307 (FLOAT32)p_parametric_drc_params->sampling_rate * 0.001f); 308 } else { 309 if (str_parametric_drc_instructions->parametric_drc_type == 310 PARAM_DRC_TYPE_FF) { 311 parametric_drc_look_ahead_samples = (WORD32)( 312 10.0f * (FLOAT32)p_parametric_drc_params->sampling_rate * 0.001f); 313 } else if (str_parametric_drc_instructions->parametric_drc_type == 314 PARAM_DRC_TYPE_LIM) { 315 parametric_drc_look_ahead_samples = (WORD32)( 316 5.0f * (FLOAT32)p_parametric_drc_params->sampling_rate * 0.001f); 317 } else { 318 return (UNEXPECTED_ERROR); 319 } 320 } 321 drc_instructions_uni_drc->parametric_drc_look_ahead_samples[g] = 322 parametric_drc_look_ahead_samples; 323 if (drc_instructions_uni_drc->parametric_drc_look_ahead_samples_max < 324 drc_instructions_uni_drc->parametric_drc_look_ahead_samples[g]) { 325 drc_instructions_uni_drc->parametric_drc_look_ahead_samples_max = 326 drc_instructions_uni_drc->parametric_drc_look_ahead_samples[g]; 327 } 328 p_parametric_drc_params->parametric_drc_instance_count += 1; 329 selected_drc_is_multiband = 0; 330 } 331 } 332 ia_drc_params_struct->parametric_drc_delay += 333 drc_instructions_uni_drc->parametric_drc_look_ahead_samples_max; 334 335 if (selected_drc_is_multiband == 1) { 336 ia_drc_params_struct->multiband_sel_drc_idx = 337 ia_drc_params_struct->drc_set_counter; 338 err = impd_init_all_filter_banks( 339 drc_coefficients_uni_drc, 340 &(drc_config->str_drc_instruction_str[drc_instructions_selected]), 341 ia_filter_banks_struct); 342 if (err) return (err); 343 344 err = impd_init_overlap_weight( 345 drc_coefficients_uni_drc, 346 &(drc_config->str_drc_instruction_str[drc_instructions_selected]), 347 ia_drc_params_struct->sub_band_domain_mode, pstr_overlap_params); 348 if (err) return (err); 349 } else { 350 ia_gain_modifiers_struct* gain_modifiers = 351 drc_config->str_drc_instruction_str->str_gain_modifiers_of_ch_group; 352 for (g = 0; g < drc_instructions_uni_drc->num_drc_ch_groups; g++) { 353 if (gain_modifiers[g].shape_filter_flag == 1) { 354 impd_shape_filt_block_init( 355 &drc_coefficients_uni_drc->str_shape_filter_block_params 356 [gain_modifiers[g].shape_filter_idx], 357 &shape_filter_block[g]); 358 } else { 359 shape_filter_block[g].shape_flter_block_flag = 0; 360 } 361 } 362 } 363 364 ia_drc_params_struct->drc_set_counter++; 365 366 return (0); 367 } 368
