OpenJPEG  2.3.0
byte_manager.h
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1 /*
2  * $Id$
3  *
4  * Copyright (c) 2002-2014, Universite catholique de Louvain (UCL), Belgium
5  * Copyright (c) 2002-2014, Professor Benoit Macq
6  * Copyright (c) 2010-2011, Kaori Hagihara
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30 
31 #ifndef BYTE_MANAGER_H_
32 #define BYTE_MANAGER_H_
33 
34 #include <stddef.h>
35 #include "openjpeg.h"
36 #include "opj_stdint.h"
37 typedef uint8_t Byte_t;
38 typedef uint16_t Byte2_t;
39 typedef uint32_t Byte4_t;
40 typedef uint64_t Byte8_t;
41 
50 Byte_t * fetch_bytes(int fd, OPJ_OFF_T offset, OPJ_SIZE_T size);
51 
52 
60 Byte_t fetch_1byte(int fd, OPJ_OFF_T offset);
61 
69 Byte2_t fetch_2bytebigendian(int fd, OPJ_OFF_T offset);
70 
78 Byte4_t fetch_4bytebigendian(int fd, OPJ_OFF_T offset);
79 
87 Byte8_t fetch_8bytebigendian(int fd, OPJ_OFF_T offset);
88 
89 
96 Byte2_t big2(Byte_t *buf);
97 
104 Byte4_t big4(Byte_t *buf);
105 
112 Byte8_t big8(Byte_t *buf);
113 
120 void modify_4Bytecode(Byte4_t code, Byte_t *stream);
121 
128 OPJ_OFF_T get_filesize(int fd);
129 
130 #endif /* !BYTE_MANAGER_H_ */
uint8_t Byte_t
Definition: byte_manager.h:37
int64_t OPJ_OFF_T
Definition: openjpeg.h:130
Byte4_t fetch_4bytebigendian(int fd, OPJ_OFF_T offset)
fetch a 4-byte big endian Byte codes in file stream
Definition: byte_manager.c:109
Byte4_t big4(Byte_t *buf)
convert 4-byte big endian Byte codes to number
Definition: byte_manager.c:147
void modify_4Bytecode(Byte4_t code, Byte_t *stream)
modify 4Byte code in a codestream
Definition: byte_manager.c:159
Byte2_t big2(Byte_t *buf)
convert 2-byte big endian Byte codes to number
Definition: byte_manager.c:142
Byte_t fetch_1byte(int fd, OPJ_OFF_T offset)
fetch a 1-byte Byte codes in file stream
Definition: byte_manager.c:75
size_t OPJ_SIZE_T
Definition: openjpeg.h:133
Byte8_t big8(Byte_t *buf)
convert 8-byte big endian Byte codes to number
Definition: byte_manager.c:153
OPJ_OFF_T get_filesize(int fd)
Get file size.
Definition: byte_manager.c:167
uint32_t Byte4_t
Definition: byte_manager.h:39
Byte2_t fetch_2bytebigendian(int fd, OPJ_OFF_T offset)
fetch a 2-byte big endian Byte codes in file stream
Definition: byte_manager.c:93
Byte8_t fetch_8bytebigendian(int fd, OPJ_OFF_T offset)
fetch a 8-byte big endian Byte codes in file stream
Definition: byte_manager.c:125
Byte_t * fetch_bytes(int fd, OPJ_OFF_T offset, OPJ_SIZE_T size)
fetch bytes of data in file stream
Definition: byte_manager.c:52
uint64_t Byte8_t
Definition: byte_manager.h:40
uint16_t Byte2_t
Definition: byte_manager.h:38