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141 lines
4.3 KiB
141 lines
4.3 KiB
/******************************************************************************
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* *
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*****************************************************************************
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* Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
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*/
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#ifndef IXHEAACD_BITBUFFER_H
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#define IXHEAACD_BITBUFFER_H
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#include <setjmp.h>
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#define CRC_ADTS_HEADER_LEN 56
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#define CRC_ADTS_RAW_DATA_BLK_LEN 192
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#define CRC_ADTS_RAW_IIND_ICS 128
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#define CRC_ADTS_LEN_ALL -1
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#define MAX_REG_SIZE 192
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#define MAX_CRC_REGS 7
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struct ia_crc_bit_buf_struct {
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UWORD8 *ptr_bit_buf_base;
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UWORD8 *ptr_bit_buf_end;
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UWORD8 *ptr_read_next;
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WORD16 bit_pos;
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WORD32 cnt_bits;
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WORD32 size;
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};
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typedef struct {
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UWORD8 active;
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WORD32 buf_size;
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WORD32 max_bits;
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UWORD32 bit_cnt;
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WORD32 bit_buf_cnt;
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struct ia_crc_bit_buf_struct str_bit_buf;
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} ia_crc_reg_data_struct;
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typedef struct {
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UWORD8 crc_active;
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UWORD16 no_reg;
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UWORD16 file_value;
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UWORD16 crc_lookup[256];
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ia_crc_reg_data_struct str_crc_reg_data[MAX_CRC_REGS];
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} ia_adts_crc_info_struct;
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typedef struct ia_bit_buf_struct {
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UWORD8 *ptr_bit_buf_base;
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UWORD8 *ptr_bit_buf_end;
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UWORD8 *ptr_read_next;
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WORD32 bit_pos;
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WORD32 cnt_bits;
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WORD32 size;
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WORD32 adts_header_present;
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WORD32 crc_check;
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WORD8 protection_absent;
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WORD8 no_raw_data_blocks;
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ia_adts_crc_info_struct str_adts_crc_info;
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ia_adts_crc_info_struct *pstr_adts_crc_info;
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WORD32 initial_cnt_bits;
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WORD32 audio_mux_align;
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WORD32 bit_count;
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WORD32 valid_bits;
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UWORD8 byte;
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UWORD8 *byte_ptr;
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UWORD8 *ptr_start;
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WORD32 write_bit_count;
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WORD32 max_size;
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jmp_buf *xaac_jmp_buf;
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} ia_bit_buf_struct;
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typedef struct ia_bit_buf_struct *ia_handle_bit_buf_struct;
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typedef struct ia_crc_bit_buf_struct *ia_crc_bit_buf_struct_handle;
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VOID ixheaacd_byte_align(ia_bit_buf_struct *it_bit_buff,
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WORD32 *ptr_byte_align_bits);
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ia_bit_buf_struct *ixheaacd_create_bit_buf(ia_bit_buf_struct *it_bit_buff,
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UWORD8 *ptr_bit_buf_base,
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WORD32 bit_buf_size);
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VOID ixheaacd_create_init_bit_buf(ia_bit_buf_struct *it_bit_buff,
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UWORD8 *ptr_bit_buf_base,
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WORD32 bit_buf_size);
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WORD32 ixheaacd_read_bits_buf(ia_bit_buf_struct *it_bit_buff, WORD no_of_bits);
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WORD32 ixheaacd_skip_bits_buf(ia_bit_buf_struct *it_bit_buff, WORD no_of_bits);
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WORD32 ixheaacd_show_bits_buf(ia_bit_buf_struct *it_bit_buff, WORD no_of_bits);
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VOID ixheaacd_read_bidirection(ia_bit_buf_struct *it_bit_buff,
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WORD32 ixheaacd_drc_offset);
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UWORD32 ixheaacd_aac_showbits_32(UWORD8 *ptr_read_next, WORD32 cnt_bits,
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WORD32 *increment);
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VOID ixheaacd_aac_read_byte(UWORD8 **ptr_read_next, WORD32 *bit_pos,
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WORD32 *readword);
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VOID ixheaacd_aac_read_byte_corr(UWORD8 **ptr_read_next, WORD32 *ptr_bit_pos,
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WORD32 *readword, UWORD8 *p_bit_buf_end);
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VOID ixheaacd_aac_read_byte_corr1(UWORD8 **ptr_read_next, WORD32 *ptr_bit_pos,
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WORD32 *readword, UWORD8 *p_bit_buf_end);
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#define get_no_bits_available(it_bit_buff) ((it_bit_buff)->cnt_bits)
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#define ixheaacd_no_bits_read(it_bit_buff) \
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((it_bit_buff)->size - (it_bit_buff)->cnt_bits)
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WORD32 ixheaacd_aac_read_bit_rev(ia_bit_buf_struct *it_bit_buff);
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WORD32 ixheaacd_aac_read_bit(ia_bit_buf_struct *it_bit_buff);
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VOID ixheaacd_write_bit(ia_bit_buf_struct *it_bit_buff, WORD32 value,
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WORD32 no_of_bits);
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WORD32 ixheaacd_read_bit(ia_bit_buf_struct *data, WORD32 no_of_bits);
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#endif /* IXHEAACD_BITBUFFER_H */
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