#include <config.h>
#include <libexif/exif-loader.h>
#include <libexif/exif-utils.h>
#include <libexif/i18n.h>
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>

Include dependency graph for exif-loader.c:

Data Structures
struct	_ExifLoader

Macros
#define	JPEG_MARKER_DCT 0xc0

#define	JPEG_MARKER_DHT 0xc4

#define	JPEG_MARKER_SOI 0xd8

#define	JPEG_MARKER_DQT 0xdb

#define	JPEG_MARKER_APP0 0xe0

#define	JPEG_MARKER_APP1 0xe1

#define	JPEG_MARKER_APP2 0xe2

#define	JPEG_MARKER_APP4 0xe4

#define	JPEG_MARKER_APP5 0xe5

#define	JPEG_MARKER_APP11 0xeb

#define	JPEG_MARKER_APP13 0xed

#define	JPEG_MARKER_APP14 0xee

#define	JPEG_MARKER_COM 0xfe

Enumerations
enum	ExifLoaderState { EL_READ = 0 , EL_READ_SIZE_BYTE_24 , EL_READ_SIZE_BYTE_16 , EL_READ_SIZE_BYTE_08 , EL_READ_SIZE_BYTE_00 , EL_SKIP_BYTES , EL_EXIF_FOUND }

enum	ExifLoaderDataFormat { EL_DATA_FORMAT_UNKNOWN , EL_DATA_FORMAT_EXIF , EL_DATA_FORMAT_JPEG , EL_DATA_FORMAT_FUJI_RAW }

Functions
static void *	exif_loader_alloc (ExifLoader *l, unsigned int i)

void	exif_loader_write_file (ExifLoader l, const char path)
	Load a file into the given ExifLoader from the filesystem. More...

static unsigned int	exif_loader_copy (ExifLoader eld, unsigned char buf, unsigned int len)

unsigned char	exif_loader_write (ExifLoader eld, unsigned char buf, unsigned int len)
	Load a buffer into the ExifLoader from a memory buffer. More...

ExifLoader *	exif_loader_new (void)
	Allocate a new ExifLoader. More...

ExifLoader *	exif_loader_new_mem (ExifMem *mem)
	Allocate a new ExifLoader using the specified memory allocator. More...

void	exif_loader_ref (ExifLoader *loader)
	Increase the refcount of the ExifLoader. More...

static void	exif_loader_free (ExifLoader *loader)

void	exif_loader_unref (ExifLoader *loader)
	Decrease the refcount of the ExifLoader. More...

void	exif_loader_reset (ExifLoader *loader)
	Free any data previously loaded and reset the ExifLoader to its newly-initialized state. More...

ExifData *	exif_loader_get_data (ExifLoader *loader)
	Create an ExifData from the data in the loader. More...

void	exif_loader_get_buf (ExifLoader loader, const unsigned char buf, unsigned int buf_size)
	Return the raw data read by the loader. More...

void	exif_loader_log (ExifLoader loader, ExifLog log)
	Set the log message object used by this ExifLoader. More...

Variables
static const unsigned char	ExifHeader [] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00}
	Magic number for EXIF header. More...

Macro Definition Documentation

◆ JPEG_MARKER_APP0

#define JPEG_MARKER_APP0 0xe0

Definition at line 41 of file exif-loader.c.

◆ JPEG_MARKER_APP1

#define JPEG_MARKER_APP1 0xe1

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

◆ JPEG_MARKER_APP11

#define JPEG_MARKER_APP11 0xeb

Definition at line 51 of file exif-loader.c.

◆ JPEG_MARKER_APP13

#define JPEG_MARKER_APP13 0xed

Definition at line 53 of file exif-loader.c.

◆ JPEG_MARKER_APP14

#define JPEG_MARKER_APP14 0xee

Definition at line 55 of file exif-loader.c.

◆ JPEG_MARKER_APP2

#define JPEG_MARKER_APP2 0xe2

Definition at line 45 of file exif-loader.c.

◆ JPEG_MARKER_APP4

#define JPEG_MARKER_APP4 0xe4

Definition at line 47 of file exif-loader.c.

◆ JPEG_MARKER_APP5

#define JPEG_MARKER_APP5 0xe5

Definition at line 49 of file exif-loader.c.

◆ JPEG_MARKER_COM

#define JPEG_MARKER_COM 0xfe

Definition at line 57 of file exif-loader.c.

◆ JPEG_MARKER_DCT

#define JPEG_MARKER_DCT 0xc0

Definition at line 33 of file exif-loader.c.

◆ JPEG_MARKER_DHT

#define JPEG_MARKER_DHT 0xc4

Definition at line 35 of file exif-loader.c.

◆ JPEG_MARKER_DQT

#define JPEG_MARKER_DQT 0xdb

Definition at line 39 of file exif-loader.c.

◆ JPEG_MARKER_SOI

#define JPEG_MARKER_SOI 0xd8

Definition at line 37 of file exif-loader.c.

Enumeration Type Documentation

◆ ExifLoaderDataFormat

enum ExifLoaderDataFormat

Enumerator
EL_DATA_FORMAT_UNKNOWN
EL_DATA_FORMAT_EXIF
EL_DATA_FORMAT_JPEG
EL_DATA_FORMAT_FUJI_RAW

Definition at line 69 of file exif-loader.c.

◆ ExifLoaderState

enum ExifLoaderState

Enumerator
EL_READ
EL_READ_SIZE_BYTE_24
EL_READ_SIZE_BYTE_16
EL_READ_SIZE_BYTE_08
EL_READ_SIZE_BYTE_00
EL_SKIP_BYTES
EL_EXIF_FOUND

Definition at line 59 of file exif-loader.c.

Function Documentation

◆ exif_loader_alloc()

static void* exif_loader_alloc	(	ExifLoader *	l,
		unsigned int	i
	)

static

Definition at line 101 of file exif-loader.c.

References EXIF_LOG_NO_MEMORY, exif_mem_alloc(), _ExifLoader::log, and _ExifLoader::mem.

Referenced by exif_loader_copy().

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◆ exif_loader_copy()

static unsigned int exif_loader_copy	(	ExifLoader *	eld,
		unsigned char *	buf,
		unsigned int	len
	)

static

Definition at line 143 of file exif-loader.c.

References _ExifLoader::buf, _ExifLoader::bytes_read, exif_loader_alloc(), MIN, and _ExifLoader::size.

Referenced by exif_loader_write().

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◆ exif_loader_free()

static void exif_loader_free ( ExifLoader * loader )

static

Definition at line 389 of file exif-loader.c.

References exif_loader_reset(), exif_log_unref(), exif_mem_free(), exif_mem_unref(), _ExifLoader::log, and _ExifLoader::mem.

Referenced by exif_loader_unref().

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◆ exif_loader_get_buf()

void exif_loader_get_buf	(	ExifLoader *	loader,
		const unsigned char **	buf,
		unsigned int *	buf_size
	)

Return the raw data read by the loader.

The returned pointer is only guaranteed to be valid until the next call to a function modifying this ExifLoader. Either or both of buf and buf_size may be NULL on entry, in which case that value is not returned.

Parameters

[in]	loader	the loader
[out]	buf	read-only pointer to the data read by the loader, or NULL in case of error
[out]	buf_size	size of the data at buf, or 0 in case of error

Definition at line 442 of file exif-loader.c.

References _ExifLoader::buf, _ExifLoader::bytes_read, _ExifLoader::data_format, EL_DATA_FORMAT_UNKNOWN, exif_log(), EXIF_LOG_CODE_DEBUG, and _ExifLoader::log.

Referenced by loader_null_test().

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◆ exif_loader_get_data()

ExifData* exif_loader_get_data ( ExifLoader * loader )

Create an ExifData from the data in the loader.

The loader must already contain data from a previous call to exif_loader_write_file or exif_loader_write.

Note: The ExifData returned is created using its default options, which may take effect before the data is returned. If other options are desired, an ExifData must be created explicitly and data extracted from the loader using exif_loader_get_buf instead.

Parameters

[in] loader the loader