EXIF data manipulation functions and types. More...

#include <libexif/exif-byte-order.h>
#include <libexif/exif-format.h>
#include <libexif/_stdint.h>

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Data Structures
struct	ExifRational
	EXIF Unsigned Rational data type. More...

struct	ExifSRational
	EXIF Signed Rational data type. More...

Macros
#define	MIN(a, b) (((a) < (b)) ? (a) : (b))

#define	MAX(a, b) (((a) > (b)) ? (a) : (b))

#define	EXIF_TAG_SUBSEC_TIME EXIF_TAG_SUB_SEC_TIME

Typedefs
typedef unsigned char	ExifByte
	EXIF Unsigned Byte data type.

typedef signed char	ExifSByte
	EXIF Signed Byte data type.

typedef char *	ExifAscii
	EXIF Text String data type.

typedef uint16_t	ExifShort
	EXIF Unsigned Short data type.

typedef int16_t	ExifSShort
	EXIF Signed Short data type.

typedef uint32_t	ExifLong
	EXIF Unsigned Long data type.

typedef int32_t	ExifSLong
	EXIF Signed Long data type.

typedef char	ExifUndefined

Functions
ExifShort	exif_get_short (const unsigned char *b, ExifByteOrder order)
	Retrieve an ExifShort value from memory.

ExifSShort	exif_get_sshort (const unsigned char *b, ExifByteOrder order)
	Retrieve an ExifSShort value from memory.

ExifLong	exif_get_long (const unsigned char *b, ExifByteOrder order)
	Retrieve an ExifLong value from memory.

ExifSLong	exif_get_slong (const unsigned char *b, ExifByteOrder order)
	Retrieve an ExifSLong value from memory.

ExifRational	exif_get_rational (const unsigned char *b, ExifByteOrder order)
	Retrieve an ExifRational value from memory.

ExifSRational	exif_get_srational (const unsigned char *b, ExifByteOrder order)
	Retrieve an ExifSRational value from memory.

void	exif_set_short (unsigned char *b, ExifByteOrder order, ExifShort value)
	Store an ExifShort value into memory in EXIF format.

void	exif_set_sshort (unsigned char *b, ExifByteOrder order, ExifSShort value)
	Store an ExifSShort value into memory in EXIF format.

void	exif_set_long (unsigned char *b, ExifByteOrder order, ExifLong value)
	Store an ExifLong value into memory in EXIF format.

void	exif_set_slong (unsigned char *b, ExifByteOrder order, ExifSLong value)
	Store an ExifSLong value into memory in EXIF format.

void	exif_set_rational (unsigned char *b, ExifByteOrder order, ExifRational value)
	Store an ExifRational value into memory in EXIF format.

void	exif_set_srational (unsigned char *b, ExifByteOrder order, ExifSRational value)
	Store an ExifSRational value into memory in EXIF format.

void	exif_convert_utf16_to_utf8 (char out, unsigned int outlen, const unsigned char in, unsigned int inlen)
	This function converts rather UCS-2LE than UTF-16 to UTF-8.

void	exif_array_set_byte_order (ExifFormat, unsigned char *, unsigned int, ExifByteOrder o_orig, ExifByteOrder o_new)

Detailed Description

EXIF data manipulation functions and types.

Definition in file exif-utils.h.

Macro Definition Documentation

◆ EXIF_TAG_SUBSEC_TIME

#define EXIF_TAG_SUBSEC_TIME EXIF_TAG_SUB_SEC_TIME

Deprecated:: Use EXIF_TAG_SUB_SEC_TIME instead.

Definition at line 190 of file exif-utils.h.

◆ MAX

#define MAX	(	a,
		b
	)	(((a) > (b)) ? (a) : (b))

Definition at line 185 of file exif-utils.h.

◆ MIN

#define MIN	(	a,
		b
	)	(((a) < (b)) ? (a) : (b))

Definition at line 182 of file exif-utils.h.

Typedef Documentation

◆ ExifAscii

typedef char* ExifAscii

EXIF Text String data type.

Definition at line 47 of file exif-utils.h.

◆ ExifByte

typedef unsigned char ExifByte

EXIF Unsigned Byte data type.

Definition at line 41 of file exif-utils.h.

◆ ExifLong

typedef uint32_t ExifLong

EXIF Unsigned Long data type.

Definition at line 56 of file exif-utils.h.

◆ ExifSByte

typedef signed char ExifSByte

EXIF Signed Byte data type.

Definition at line 44 of file exif-utils.h.

◆ ExifShort

typedef uint16_t ExifShort

EXIF Unsigned Short data type.

Definition at line 50 of file exif-utils.h.

◆ ExifSLong

typedef int32_t ExifSLong

EXIF Signed Long data type.

Definition at line 59 of file exif-utils.h.

◆ ExifSShort

typedef int16_t ExifSShort

EXIF Signed Short data type.

Definition at line 53 of file exif-utils.h.

◆ ExifUndefined

typedef char ExifUndefined

Definition at line 64 of file exif-utils.h.

Function Documentation

◆ exif_array_set_byte_order()

void exif_array_set_byte_order	(	ExifFormat	f,
		unsigned char *	b,
		unsigned int	n,
		ExifByteOrder	o_orig,
		ExifByteOrder	o_new
	)

Definition at line 28 of file exif-utils.c.

References EXIF_FORMAT_ASCII, EXIF_FORMAT_BYTE, exif_format_get_size(), EXIF_FORMAT_LONG, EXIF_FORMAT_RATIONAL, EXIF_FORMAT_SHORT, EXIF_FORMAT_SLONG, EXIF_FORMAT_SRATIONAL, EXIF_FORMAT_SSHORT, EXIF_FORMAT_UNDEFINED, exif_get_long(), exif_get_rational(), exif_get_short(), exif_get_slong(), exif_get_srational(), exif_get_sshort(), exif_set_long(), exif_set_rational(), exif_set_short(), exif_set_slong(), exif_set_srational(), and exif_set_sshort().

Referenced by entry_set_byte_order(), exif_mnote_data_apple_set_byte_order(), exif_mnote_data_canon_set_byte_order(), exif_mnote_data_fuji_set_byte_order(), exif_mnote_data_olympus_set_byte_order(), and exif_mnote_data_pentax_set_byte_order().

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◆ exif_convert_utf16_to_utf8()

void exif_convert_utf16_to_utf8	(	char *	out,
		unsigned int	outlen,
		const unsigned char *	in,
		unsigned int	inlen
	)

This function converts rather UCS-2LE than UTF-16 to UTF-8.

It should really be replaced by iconv().

Definition at line 222 of file exif-utils.c.

References EXIF_BYTE_ORDER_INTEL, and exif_get_short().

Referenced by exif_entry_get_value().

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◆ exif_get_long()

ExifLong exif_get_long	(	const unsigned char *	b,
		ExifByteOrder	order
	)

Retrieve an ExifLong value from memory.

Parameters

[in]	b	pointer to raw EXIF value in memory
[in]	order	byte order of raw value

Returns: value

Definition at line 167 of file exif-utils.c.

References exif_get_slong().

Referenced by exif_array_set_byte_order(), exif_data_load_data(), exif_data_load_data_content(), exif_data_load_data_entry(), exif_entry_format_value(), exif_get_rational(), exif_get_short_convert(), exif_mnote_data_apple_load(), exif_mnote_data_canon_load(), exif_mnote_data_fuji_load(), exif_mnote_data_olympus_load(), exif_mnote_data_pentax_load(), mnote_apple_entry_get_value(), mnote_canon_entry_get_value(), mnote_fuji_entry_get_value(), mnote_olympus_entry_get_value(), and mnote_pentax_entry_get_value().

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◆ exif_get_rational()

ExifRational exif_get_rational	(	const unsigned char *	b,
		ExifByteOrder	order
	)

Retrieve an ExifRational value from memory.

Parameters

[in]	b	pointer to raw EXIF value in memory
[in]	order	byte order of raw value

Returns: value

Definition at line 190 of file exif-utils.c.

References ExifRational::denominator, exif_get_long(), and ExifRational::numerator.

Referenced by exif_array_set_byte_order(), exif_entry_fix(), exif_entry_format_value(), exif_entry_get_value(), mnote_apple_entry_get_value(), mnote_fuji_entry_get_value(), and mnote_olympus_entry_get_value().

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◆ exif_get_short()

ExifShort exif_get_short	(	const unsigned char *	b,
		ExifByteOrder	order
	)

Retrieve an ExifShort value from memory.

Parameters

[in]	b	pointer to raw EXIF value in memory
[in]	order	byte order of raw value

Returns: value

Definition at line 104 of file exif-utils.c.

References exif_get_sshort().

Referenced by cmp_func(), exif_array_set_byte_order(), exif_convert_utf16_to_utf8(), exif_data_load_data(), exif_data_load_data_content(), exif_data_load_data_entry(), exif_entry_format_value(), exif_entry_get_value(), exif_get_short_convert(), exif_mnote_data_apple_load(), exif_mnote_data_canon_load(), exif_mnote_data_fuji_load(), exif_mnote_data_olympus_load(), exif_mnote_data_pentax_load(), mnote_apple_entry_get_value(), mnote_canon_entry_count_values(), mnote_canon_entry_get_value(), mnote_fuji_entry_get_value(), mnote_olympus_entry_get_value(), and mnote_pentax_entry_get_value().

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◆ exif_get_slong()

ExifSLong exif_get_slong	(	const unsigned char *	b,
		ExifByteOrder	order
	)

Retrieve an ExifSLong value from memory.

Parameters

[in]	b	pointer to raw EXIF value in memory
[in]	order	byte order of raw value

Returns: value

Definition at line 132 of file exif-utils.c.

References EXIF_BYTE_ORDER_INTEL, and EXIF_BYTE_ORDER_MOTOROLA.

Referenced by exif_array_set_byte_order(), exif_entry_format_value(), exif_get_long(), exif_get_short_convert(), exif_get_srational(), mnote_apple_entry_get_value(), mnote_canon_entry_get_value(), mnote_fuji_entry_get_value(), mnote_olympus_entry_get_value(), and mnote_pentax_entry_get_value().

◆ exif_get_srational()

ExifSRational exif_get_srational	(	const unsigned char *	b,
		ExifByteOrder	order
	)

Retrieve an ExifSRational value from memory.

Parameters

[in]	b	pointer to raw EXIF value in memory
[in]	order	byte order of raw value

Returns: value

Definition at line 179 of file exif-utils.c.

References ExifSRational::denominator, exif_get_slong(), and ExifSRational::numerator.

Referenced by exif_array_set_byte_order(), exif_entry_fix(), exif_entry_format_value(), exif_entry_get_value(), mnote_apple_entry_get_value(), mnote_fuji_entry_get_value(), and mnote_olympus_entry_get_value().

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◆ exif_get_sshort()

ExifSShort exif_get_sshort	(	const unsigned char *	b,
		ExifByteOrder	order
	)

Retrieve an ExifSShort value from memory.

Parameters

[in]	b	pointer to raw EXIF value in memory
[in]	order	byte order of raw value

Returns: value

Definition at line 89 of file exif-utils.c.

References EXIF_BYTE_ORDER_INTEL, and EXIF_BYTE_ORDER_MOTOROLA.

Referenced by exif_array_set_byte_order(), exif_entry_format_value(), exif_get_short(), exif_get_short_convert(), mnote_apple_entry_get_value(), mnote_canon_entry_get_value(), mnote_fuji_entry_get_value(), mnote_olympus_entry_get_value(), and mnote_pentax_entry_get_value().

◆ exif_set_long()

void exif_set_long	(	unsigned char *	b,
		ExifByteOrder	order,
		ExifLong	value
	)

Store an ExifLong value into memory in EXIF format.

Parameters

[out]	b	buffer in which to write raw value
[in]	order	byte order to use
[in]	value	data value to store

Definition at line 173 of file exif-utils.c.

References exif_set_slong().

Referenced by exif_array_set_byte_order(), exif_data_save_data(), exif_data_save_data_content(), exif_data_save_data_entry(), exif_mnote_data_canon_save(), exif_mnote_data_fuji_save(), exif_mnote_data_olympus_save(), exif_mnote_data_pentax_save(), and exif_set_rational().

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◆ exif_set_rational()

void exif_set_rational	(	unsigned char *	b,
		ExifByteOrder	order,
		ExifRational	value
	)

Store an ExifRational value into memory in EXIF format.

Parameters

[out]	b	buffer in which to write raw value
[in]	order	byte order to use
[in]	value	data value to store

Definition at line 201 of file exif-utils.c.

References ExifRational::denominator, exif_set_long(), and ExifRational::numerator.

Referenced by exif_array_set_byte_order(), exif_entry_fix(), exif_entry_initialize(), and main().

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◆ exif_set_short()

void exif_set_short	(	unsigned char *	b,
		ExifByteOrder	order,
		ExifShort	value
	)

Store an ExifShort value into memory in EXIF format.

Parameters

[out]	b	buffer in which to write raw value
[in]	order	byte order to use
[in]	value	data value to store

Definition at line 126 of file exif-utils.c.

References exif_set_sshort().

Referenced by exif_array_set_byte_order(), exif_data_save_data(), exif_data_save_data_content(), exif_data_save_data_entry(), exif_entry_fix(), exif_entry_initialize(), exif_mnote_data_canon_save(), exif_mnote_data_fuji_save(), exif_mnote_data_olympus_save(), exif_mnote_data_pentax_save(), main(), and main().

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◆ exif_set_slong()

void exif_set_slong	(	unsigned char *	b,
		ExifByteOrder	order,
		ExifSLong	value
	)

Store an ExifSLong value into memory in EXIF format.

Parameters

[out]	b	buffer in which to write raw value
[in]	order	byte order to use
[in]	value	data value to store

Definition at line 147 of file exif-utils.c.

References EXIF_BYTE_ORDER_INTEL, and EXIF_BYTE_ORDER_MOTOROLA.

Referenced by exif_array_set_byte_order(), exif_set_long(), and exif_set_srational().

◆ exif_set_srational()

void exif_set_srational	(	unsigned char *	b,
		ExifByteOrder	order,
		ExifSRational	value
	)

Store an ExifSRational value into memory in EXIF format.

Parameters

[out]	b	buffer in which to write raw value
[in]	order	byte order to use
[in]	value	data value to store

Definition at line 210 of file exif-utils.c.

References ExifSRational::denominator, exif_set_slong(), and ExifSRational::numerator.

Referenced by exif_array_set_byte_order(), exif_entry_fix(), and main().

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◆ exif_set_sshort()

void exif_set_sshort	(	unsigned char *	b,
		ExifByteOrder	order,
		ExifSShort	value
	)

Store an ExifSShort value into memory in EXIF format.

Parameters

[out]	b	buffer in which to write raw value
[in]	order	byte order to use
[in]	value	data value to store

Definition at line 110 of file exif-utils.c.

References EXIF_BYTE_ORDER_INTEL, and EXIF_BYTE_ORDER_MOTOROLA.

Referenced by exif_array_set_byte_order(), and exif_set_short().

Data Structures

Macros

Typedefs

Functions

Detailed Description

Macro Definition Documentation

◆ EXIF_TAG_SUBSEC_TIME

◆ MAX

◆ MIN

Typedef Documentation

◆ ExifAscii

◆ ExifByte

◆ ExifLong

◆ ExifSByte

◆ ExifShort

◆ ExifSLong

◆ ExifSShort

◆ ExifUndefined

Function Documentation

◆ exif_array_set_byte_order()

◆ exif_convert_utf16_to_utf8()

◆ exif_get_long()

◆ exif_get_rational()

◆ exif_get_short()

◆ exif_get_slong()

◆ exif_get_srational()

◆ exif_get_sshort()

◆ exif_set_long()

◆ exif_set_rational()

◆ exif_set_short()

◆ exif_set_slong()

◆ exif_set_srational()

◆ exif_set_sshort()