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