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_AACDEC_H 21 #define IXHEAACD_AACDEC_H 22 23 #define AAC_DEC_OK IA_XHEAAC_DEC_API_NONFATAL_NO_ERROR 24 25 #define FRAME_SIZE 1024 26 #define FRAME_SIZE_SMALL 960 27 28 #define ADTS_BSFORMAT 2 29 #define LOAS_BSFORMAT 3 30 31 typedef struct ia_aac_decoder_struct { 32 FLAG frame_status; 33 WORD32 byte_align_bits; 34 ia_aac_dec_sbr_bitstream_struct *pstr_sbr_bitstream; 35 ia_aac_dec_channel_info_struct *pstr_aac_dec_ch_info[CHANNELS]; 36 37 ia_aac_dec_channel_info *ptr_aac_dec_static_channel_info[CHANNELS]; 38 39 ia_aac_dec_overlap_info *pstr_aac_dec_overlap_info[CHANNELS]; 40 ia_pns_rand_vec_struct *pstr_pns_rand_vec_data; 41 void *p_ind_channel_info; 42 WORD32 block_number; 43 WORD16 sampling_rate_index; 44 WORD32 sampling_rate; 45 WORD32 samples_per_frame; 46 WORD16 channels; 47 WORD8 num_swb_window[2]; 48 ia_aac_dec_tables_struct *pstr_aac_tables; 49 ixheaacd_misc_tables *pstr_common_tables; 50 WORD32 is_first; 51 WORD32 conceal_count; 52 WORD16 sbr_num_elements; 53 } ia_aac_decoder_struct; 54 55 struct ia_aac_persistent_struct { 56 WORD32 *overlap_buffer; 57 ia_aac_dec_overlap_info str_aac_dec_overlap_info[CHANNELS]; 58 ia_pns_rand_vec_struct str_pns_rand_vec_data; 59 struct ia_aac_decoder_struct str_aac_decoder; 60 WORD8 *sbr_payload_buffer; 61 62 ia_aac_dec_channel_info *ptr_aac_dec_static_channel_info[CHANNELS]; 63 WORD16 *ltp_buf[CHANNELS]; 64 WORD8 *prev_sbr_payload_buffer; 65 }; 66 67 typedef struct { 68 VOID *base_scr_8k; 69 VOID *extra_scr_4k[4]; 70 71 WORD32 *in_data; 72 WORD32 *out_data; 73 74 } ia_aac_dec_scratch_struct; 75 76 WORD16 ixheaacd_individual_ch_stream( 77 ia_bit_buf_struct *it_bit_buff, ia_aac_decoder_struct *aac_dec_handle, 78 WORD32 num_ch, WORD32 frame_size, WORD32 total_channels, WORD32 object_type, 79 ia_eld_specific_config_struct eld_specific_config, WORD32 ele_type); 80 81 VOID ixheaacd_huff_tables_create(ia_aac_dec_tables_struct *); 82 83 WORD32 ixheaacd_set_aac_persistent_buffers(VOID *aac_persistent_mem_v, 84 WORD32 channels); 85 86 VOID ixheaacd_huffman_decode(WORD32 it_bit_buff, WORD16 *h_index, WORD16 *len, 87 const UWORD16 *input_table, 88 const UWORD32 *idx_table); 89 90 #endif /* #ifndef IXHEAACD_AACDEC_H */ 91