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