gzio.c File Reference

#include <gpac/tools.h>
#include "zutil.h"

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Data Structures
struct	internal_state
struct	gz_stream

Macros
#define	NO_GZCOMPRESS
#define	Z_BUFSIZE   16384
#define	Z_PRINTF_BUFSIZE   4096
#define	ALLOC(size)   gf_malloc(size)
#define	TRYFREE(p)   {if (p) gf_free(p);}
#define	ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */
#define	HEAD_CRC   0x02 /* bit 1 set: header CRC present */
#define	EXTRA_FIELD   0x04 /* bit 2 set: extra field present */
#define	ORIG_NAME   0x08 /* bit 3 set: original file name present */
#define	COMMENT   0x10 /* bit 4 set: file comment present */
#define	RESERVED   0xE0 /* bits 5..7: reserved */
#define	zstrerror(errnum)   ""

Functions
local void check_header	OF ((gz_stream *s))
GF_EXPORT void *	gf_gzopen (const char *path, const char *mode)
local int	get_byte (gz_stream *s)
local void	check_header (gz_stream *s)
local int	destroy (gz_stream *s)
GF_EXPORT int	gf_gzread (void *file, voidp buf, unsigned len)
GF_EXPORT int	gf_gzgetc (void *file)
GF_EXPORT char *	gf_gzgets (void *file, char *buf, int len)
GF_EXPORT s64	gf_gzrewind (void *file)
GF_EXPORT u64	gf_gzseek (void *file, u64 _offset, int whence)
GF_EXPORT u64	gf_gztell (void *file)
GF_EXPORT int	gf_gzeof (void *file)
GF_EXPORT int	gf_gzdirect (void *file)
local uLong	getLong (gz_stream *s)
GF_EXPORT int	gf_gzclose (void *file)
GF_EXPORT const char *	gf_gzerror (void *file, int *errnum)
GF_EXPORT void	gf_gzclearerr (void *file)

Variables
static int const	gz_magic [2] = {0x1f, 0x8b}
const char *const	gf_z_errmsg [10]

---

Data Structure Documentation

internal_state

struct internal_state

Data Fields
int	dummy

gz_stream

struct gz_stream

Data Fields
z_stream	stream
int	z_err
int	z_eof
FILE *	file
Byte *	inbuf
Byte *	outbuf
uLong	crc
char *	msg
char *	path
int	transparent
char	mode
z_off_t	start
z_off_t	in
z_off_t	out
int	back
int	last

Macro Definition Documentation

NO_GZCOMPRESS

#define NO_GZCOMPRESS

Z_BUFSIZE

#define Z_BUFSIZE   16384

Z_PRINTF_BUFSIZE

#define Z_PRINTF_BUFSIZE   4096

ALLOC

#define ALLOC

(

size

)

gf_malloc(size)

TRYFREE

#define TRYFREE

(

p

)

{if (p) gf_free(p);}

ASCII_FLAG

#define ASCII_FLAG   0x01 /* bit 0 set: file probably ascii text */

HEAD_CRC

#define HEAD_CRC   0x02 /* bit 1 set: header CRC present */

EXTRA_FIELD

#define EXTRA_FIELD   0x04 /* bit 2 set: extra field present */

ORIG_NAME

#define ORIG_NAME   0x08 /* bit 3 set: original file name present */

COMMENT

#define COMMENT   0x10 /* bit 4 set: file comment present */

RESERVED

#define RESERVED   0xE0 /* bits 5..7: reserved */

zstrerror

#define zstrerror

(

errnum

)

""

Function Documentation

OF()

local uLong getLong OF

(

(gz_stream *s)

)

get_byte()

local int get_byte

(

gz_stream *

s

)

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check_header()

local void check_header

(

gz_stream *

s

)

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destroy()

local int destroy

(

gz_stream *

s

)

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getLong()

local uLong getLong

(

gz_stream *

s

)

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Variable Documentation

gz_magic

int const gz_magic[2] = {0x1f, 0x8b}

static

gf_z_errmsg

const char* const gf_z_errmsg[10]

Initial value:

= {
        "need dictionary",     
        "stream end",          
        "",                    
        "file error",          
        "stream error",        
        "data error",          
        "insufficient memory", 
        "buffer error",        
        "incompatible version",
        ""
}