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 #include <math.h> 22 #include <stdlib.h> 23 #include <string.h> 24 #include "ixheaac_type_def.h" 25 #include "ixheaac_error_standards.h" 26 #include "ixheaace_error_codes.h" 27 #include "ixheaace_mps_common_fix.h" 28 #include "ixheaace_mps_defines.h" 29 #include "ixheaace_mps_common_define.h" 30 #include "ixheaace_bitbuffer.h" 31 32 #include "ixheaace_mps_static_gain.h" 33 #include "ixheaace_mps_bitstream.h" 34 #include "ixheaace_mps_struct_def.h" 35 #include "ixheaace_mps_sac_polyphase.h" 36 #include "ixheaace_mps_sac_nlc_enc.h" 37 #include "ixheaace_mps_sac_hybfilter.h" 38 #include "ixheaace_mps_spatial_bitstream.h" 39 #include "ixheaace_mps_param_extract.h" 40 #include "ixheaace_mps_tree.h" 41 #include "ixheaace_mps_rom.h" 42 ixheaace_mps_212_static_gain_init(ixheaace_mps_pstr_static_gain pstr_static_gain,const ixheaace_mps_pstr_static_gain_config pstr_static_gain_config)43IA_ERRORCODE ixheaace_mps_212_static_gain_init( 44 ixheaace_mps_pstr_static_gain pstr_static_gain, 45 const ixheaace_mps_pstr_static_gain_config pstr_static_gain_config) { 46 IA_ERRORCODE error = IA_NO_ERROR; 47 FLOAT32 pre_gain_factor; 48 pstr_static_gain->fixed_gain_dmx = pstr_static_gain_config->fixed_gain_dmx; 49 pstr_static_gain->pre_gain_factor_db = pstr_static_gain_config->pre_gain_factor_db; 50 51 if ((pstr_static_gain->pre_gain_factor_db < -20) || 52 (pstr_static_gain->pre_gain_factor_db > 20)) { 53 return IA_EXHEAACE_CONFIG_NONFATAL_MPS_INVALID_CONFIG; 54 } 55 56 if (pstr_static_gain->pre_gain_factor_db) { 57 pre_gain_factor = pre_gain_factor_table_flt_new[pstr_static_gain->pre_gain_factor_db + 20]; 58 } else { 59 pre_gain_factor = 1.0f; 60 } 61 62 if (pstr_static_gain->fixed_gain_dmx) { 63 pstr_static_gain->post_gain = dmx_gain_table_flt[pstr_static_gain->fixed_gain_dmx - 1]; 64 } else { 65 pstr_static_gain->post_gain = 1.0f; 66 } 67 68 memset(pstr_static_gain->pre_gain, 0, sizeof(pstr_static_gain->pre_gain)); 69 70 pstr_static_gain->pre_gain[0] = pre_gain_factor; 71 pstr_static_gain->pre_gain[1] = pre_gain_factor; 72 73 return error; 74 } 75