#include <config.h>
#include <libexif/exif-content.h>
#include <libexif/exif-system.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

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Data Structures
struct	_ExifContentPrivate

Functions
ExifContent *	exif_content_new (void)
	Reserve memory for and initialize a new ExifContent. More...

ExifContent *	exif_content_new_mem (ExifMem *mem)
	Reserve memory for and initialize new ExifContent using the specified memory allocator. More...

void	exif_content_ref (ExifContent *content)
	Increase reference counter for ExifContent. More...

void	exif_content_unref (ExifContent *content)
	Decrease reference counter for ExifContent. More...

void	exif_content_free (ExifContent *content)
	Actually free the ExifContent. More...

void	exif_content_dump (ExifContent *content, unsigned int indent)
	Dump contents of the IFD to stdout. More...

void	exif_content_add_entry (ExifContent c, ExifEntry entry)
	Add an EXIF tag to an IFD. More...

void	exif_content_remove_entry (ExifContent c, ExifEntry e)
	Remove an EXIF tag from an IFD. More...

ExifEntry *	exif_content_get_entry (ExifContent *content, ExifTag tag)
	Return the ExifEntry in this IFD corresponding to the given tag. More...

void	exif_content_foreach_entry (ExifContent content, ExifContentForeachEntryFunc func, void data)
	Executes function on each EXIF tag in this IFD in turn. More...

void	exif_content_log (ExifContent content, ExifLog log)
	Set the log message object for this IFD. More...

ExifIfd	exif_content_get_ifd (ExifContent *c)
	Return the IFD number in which the given ExifContent is found. More...

static void	fix_func (ExifEntry e, void UNUSED(data))

static void	remove_not_recorded (ExifEntry e, void UNUSED(data))
	Check if this entry is unknown and if so, delete it. More...

void	exif_content_fix (ExifContent *c)
	Fix the IFD to bring it into specification. More...

Function Documentation

◆ exif_content_add_entry()

void exif_content_add_entry	(	ExifContent *	c,
		ExifEntry *	entry
	)

Add an EXIF tag to an IFD.

If this tag already exists in the IFD, this function does nothing.

Precondition: The "tag" member of the entry must be set on entry.

Parameters

[out]	c	IFD
[in]	entry	EXIF entry to add

Definition at line 139 of file exif-content.c.

References _ExifContent::count, _ExifContent::entries, exif_content_get_entry(), exif_entry_ref(), exif_log(), EXIF_LOG_CODE_DEBUG, exif_mem_realloc(), exif_tag_get_name(), _ExifContentPrivate::log, _ExifContentPrivate::mem, _ExifEntry::parent, _ExifContent::priv, and _ExifEntry::tag.

Referenced by content_null_test(), exif_content_fix(), exif_data_load_data_content(), and main().

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◆ exif_content_dump()

void exif_content_dump	(	ExifContent *	content,
		unsigned int	indent
	)

Dump contents of the IFD to stdout.

This is intended for diagnostic purposes only.

Parameters

[in]	content	IFD data
[in]	indent	how many levels deep to indent the data

Definition at line 120 of file exif-content.c.

References _ExifContent::count, _ExifContent::entries, exif_entry_dump(), and MIN.

Referenced by content_null_test(), and exif_data_dump().

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◆ exif_content_fix()

void exif_content_fix ( ExifContent * c )

Fix the IFD to bring it into specification.

Call exif_entry_fix on each entry in this IFD to fix existing entries, create any new entries that are mandatory in this IFD but do not yet exist, and remove any entries that are not allowed in this IFD.

Parameters

[in,out] c EXIF content for an IFD

Definition at line 284 of file exif-content.c.

References _ExifContent::count, exif_content_add_entry(), exif_content_foreach_entry(), exif_content_get_entry(), exif_content_get_ifd(), exif_data_get_data_type(), exif_entry_initialize(), exif_entry_new(), exif_entry_unref(), exif_ifd_get_name(), exif_log(), EXIF_LOG_CODE_DEBUG, EXIF_SUPPORT_LEVEL_MANDATORY, exif_tag_get_name_in_ifd(), exif_tag_get_support_level_in_ifd(), exif_tag_table_count(), exif_tag_table_get_tag(), fix_func(), ifd, _ExifContentPrivate::log, _ExifContent::parent, _ExifContent::priv, and remove_not_recorded().

Referenced by content_null_test(), and fix_func().

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◆ exif_content_foreach_entry()

void exif_content_foreach_entry	(	ExifContent *	content,
		ExifContentForeachEntryFunc	func,
		void *	user_data
	)

Executes function on each EXIF tag in this IFD in turn.

The tags will not necessarily be visited in numerical order.

Parameters

[in,out]	content	IFD over which to iterate
[in]	func	function to call for each entry
[in]	user_data	data to pass into func on each call

Definition at line 216 of file exif-content.c.

References _ExifContent::count, and _ExifContent::entries.

Referenced by content_null_test(), content_set_byte_order(), data_foreach_func(), and exif_content_fix().

◆ exif_content_free()

void exif_content_free ( ExifContent * content )

Actually free the ExifContent.

Deprecated:: Should not be called directly. Use exif_content_ref and exif_content_unref instead.

Parameters

[in] content ExifContent

Definition at line 99 of file exif-content.c.

References _ExifContent::count, _ExifContent::entries, exif_entry_unref(), exif_log_unref(), exif_mem_free(), exif_mem_unref(), _ExifContentPrivate::log, _ExifContentPrivate::mem, and _ExifContent::priv.

Referenced by content_null_test(), and exif_content_unref().

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◆ exif_content_get_entry()

ExifEntry* exif_content_get_entry	(	ExifContent *	content,
		ExifTag	tag
	)

Return the ExifEntry in this IFD corresponding to the given tag.

This is a pointer into a member of the ExifContent array and must NOT be freed or unrefed by the caller.

Parameters

[in]	content	EXIF content for an IFD
[in]	tag	EXIF tag to return

Returns: ExifEntry of the tag, or NULL on error

Definition at line 202 of file exif-content.c.

References _ExifContent::count, _ExifContent::entries, tag, and _ExifEntry::tag.

Referenced by content_null_test(), entry_null_test(), exif_content_add_entry(), exif_content_fix(), and exif_entry_get_value().

◆ exif_content_get_ifd()

ExifIfd exif_content_get_ifd ( ExifContent * c )

Return the IFD number in which the given ExifContent is found.

Parameters

[in] c an ExifContent*

Returns: IFD number, or EXIF_IFD_COUNT on error

Definition at line 240 of file exif-content.c.

References EXIF_IFD_0, EXIF_IFD_1, EXIF_IFD_COUNT, EXIF_IFD_EXIF, EXIF_IFD_GPS, EXIF_IFD_INTEROPERABILITY, and _ExifContent::parent.

Referenced by content_null_test(), data_foreach_func(), exif_content_fix(), and fix_func().

◆ exif_content_log()

void exif_content_log	(	ExifContent *	content,
		ExifLog *	log
	)

Set the log message object for this IFD.

Parameters

[in]	content	IFD
[in]	log	ExifLog*

Definition at line 229 of file exif-content.c.

References exif_log_ref(), exif_log_unref(), _ExifContentPrivate::log, and _ExifContent::priv.

Referenced by content_null_test(), and exif_data_log().

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◆ exif_content_new()

ExifContent* exif_content_new ( void )

Reserve memory for and initialize a new ExifContent.

Returns: new allocated ExifContent, or NULL on error

See also: exif_content_new_mem, exif_content_unref

Definition at line 43 of file exif-content.c.

References exif_content_new_mem(), exif_mem_new_default(), and exif_mem_unref().

Referenced by content_null_test().

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◆ exif_content_new_mem()

ExifContent* exif_content_new_mem ( ExifMem * mem )

Reserve memory for and initialize new ExifContent using the specified memory allocator.

Returns: new allocated ExifContent, or NULL on error

See also: exif_content_new, exif_content_unref

Definition at line 54 of file exif-content.c.

References exif_mem_alloc(), exif_mem_free(), exif_mem_ref(), _ExifContentPrivate::mem, _ExifContent::priv, and _ExifContentPrivate::ref_count.

Referenced by content_null_test(), exif_content_new(), and exif_data_new_mem().

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◆ exif_content_ref()

void exif_content_ref ( ExifContent * content )

Increase reference counter for ExifContent.

Parameters

[in] content ExifContent

See also: exif_content_unref

Definition at line 79 of file exif-content.c.

References _ExifContent::priv, and _ExifContentPrivate::ref_count.

Referenced by content_null_test().

◆ exif_content_remove_entry()

void exif_content_remove_entry	(	ExifContent *	c,
		ExifEntry *	e
	)

Remove an EXIF tag from an IFD.

If this tag does not exist in the IFD, this function does nothing.

Parameters

[out]	c	IFD
[in]	e	EXIF entry to remove

Definition at line 163 of file exif-content.c.

References _ExifContent::count, _ExifContent::entries, exif_entry_unref(), exif_mem_free(), exif_mem_realloc(), _ExifContentPrivate::mem, _ExifEntry::parent, and _ExifContent::priv.

Referenced by content_null_test(), fix_func(), main(), and remove_not_recorded().

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◆ exif_content_unref()

void exif_content_unref ( ExifContent * content )

Decrease reference counter for ExifContent.

When the reference count drops to zero, free the content.

Parameters

[in] content ExifContent

Definition at line 88 of file exif-content.c.

References exif_content_free(), _ExifContent::priv, and _ExifContentPrivate::ref_count.

Referenced by content_null_test(), and exif_data_free().

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◆ fix_func()

static void fix_func	(	ExifEntry *	e,
		void *	UNUSEDdata
	)

static

Definition at line 254 of file exif-content.c.

References exif_entry_fix().

Referenced by exif_content_fix().

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◆ remove_not_recorded()

static void remove_not_recorded	(	ExifEntry *	e,
		void *	UNUSEDdata
	)

static

Check if this entry is unknown and if so, delete it.

Note: Be careful calling this function in a loop. Deleting an entry from an ExifContent changes the index of subsequent entries, as well as the total size of the entries array.

Definition at line 266 of file exif-content.c.

References exif_content_remove_entry(), exif_data_get_data_type(), exif_entry_get_ifd, exif_ifd_get_name(), exif_log(), EXIF_LOG_CODE_DEBUG, EXIF_SUPPORT_LEVEL_NOT_RECORDED, exif_tag_get_support_level_in_ifd(), ifd, _ExifContentPrivate::log, _ExifContent::parent, _ExifEntry::parent, _ExifContent::priv, and _ExifEntry::tag.

Referenced by exif_content_fix().

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Data Structures

Functions

Function Documentation

◆ exif_content_add_entry()

◆ exif_content_dump()

◆ exif_content_fix()

◆ exif_content_foreach_entry()

◆ exif_content_free()

◆ exif_content_get_entry()

◆ exif_content_get_ifd()

◆ exif_content_log()

◆ exif_content_new()

◆ exif_content_new_mem()

◆ exif_content_ref()

◆ exif_content_remove_entry()

◆ exif_content_unref()

◆ fix_func()

◆ remove_not_recorded()