#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>Go to the source code of this file.
Data Structures | |
| struct | _ExifLoader |
For internal use only. More... | |
Defines | |
| #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_APP13 0xed |
| #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. | |
| 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. | |
| ExifLoader * | exif_loader_new (void) |
| Allocate a new ExifLoader. | |
| ExifLoader * | exif_loader_new_mem (ExifMem *mem) |
| Allocate a new ExifLoader using the specified memory allocator. | |
| void | exif_loader_ref (ExifLoader *loader) |
| Increase the refcount of the ExifLoader. | |
| static void | exif_loader_free (ExifLoader *loader) |
| void | exif_loader_unref (ExifLoader *loader) |
| Decrease the refcount of the ExifLoader. | |
| void | exif_loader_reset (ExifLoader *loader) |
| Free any data previously loaded and reset the ExifLoader to its newly-initialized state. | |
| ExifData * | exif_loader_get_data (ExifLoader *loader) |
| Create an ExifData from the data in the loader. | |
| void | exif_loader_get_buf (ExifLoader *loader, const unsigned char **buf, unsigned int *buf_size) |
| Return the raw data read by the loader. | |
| void | exif_loader_log (ExifLoader *loader, ExifLog *log) |
| Set the log message object used by this ExifLoader. | |
Variables | |
| static const unsigned char | ExifHeader [] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00} |
| Magic number for EXIF header. | |
| #define JPEG_MARKER_APP0 0xe0 |
Definition at line 39 of file exif-loader.c.
| #define JPEG_MARKER_APP1 0xe1 |
Definition at line 41 of file exif-loader.c.
| #define JPEG_MARKER_APP13 0xed |
| #define JPEG_MARKER_APP2 0xe2 |
| #define JPEG_MARKER_COM 0xfe |
| #define JPEG_MARKER_DHT 0xc4 |
| #define JPEG_MARKER_DQT 0xdb |
| #define JPEG_MARKER_SOI 0xd8 |
Definition at line 35 of file exif-loader.c.
| enum ExifLoaderDataFormat |
Definition at line 59 of file exif-loader.c.
| enum ExifLoaderState |
| 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 49 of file exif-loader.c.
| static void* exif_loader_alloc | ( | ExifLoader * | l, | |
| unsigned int | i | |||
| ) | [static] |
Definition at line 91 of file exif-loader.c.
References EXIF_LOG_NO_MEMORY, exif_mem_alloc(), _ExifLoader::log, and _ExifLoader::mem.
Referenced by exif_loader_copy().
| static unsigned int exif_loader_copy | ( | ExifLoader * | eld, | |
| unsigned char * | buf, | |||
| unsigned int | len | |||
| ) | [static] |
Definition at line 133 of file exif-loader.c.
References _ExifLoader::buf, _ExifLoader::bytes_read, exif_loader_alloc(), MIN, and _ExifLoader::size.
Referenced by exif_loader_write().
| static void exif_loader_free | ( | ExifLoader * | loader | ) | [static] |
Definition at line 354 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().
| 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.
| [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 407 of file exif-loader.c.
| 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.
| [in] | loader | the loader |
Definition at line 391 of file exif-loader.c.
Referenced by exif_data_new_from_file(), and main().
| void exif_loader_log | ( | ExifLoader * | loader, | |
| ExifLog * | log | |||
| ) |
Set the log message object used by this ExifLoader.
| [in] | loader | the loader |
| [in] | log | ExifLog |
Definition at line 427 of file exif-loader.c.
| ExifLoader* exif_loader_new | ( | void | ) |
Allocate a new ExifLoader.
Definition at line 317 of file exif-loader.c.
Referenced by exif_data_new_from_file(), and main().
| ExifLoader* exif_loader_new_mem | ( | ExifMem * | mem | ) |
Allocate a new ExifLoader using the specified memory allocator.
| [in] | mem | the ExifMem |
Definition at line 328 of file exif-loader.c.
Referenced by exif_loader_new().
| void exif_loader_ref | ( | ExifLoader * | loader | ) |
Increase the refcount of the ExifLoader.
| [in] | loader | the ExifLoader to increase the refcount of. |
Definition at line 347 of file exif-loader.c.
| void exif_loader_reset | ( | ExifLoader * | loader | ) |
Free any data previously loaded and reset the ExifLoader to its newly-initialized state.
| [in] | loader | the loader |
Definition at line 378 of file exif-loader.c.
Referenced by exif_loader_free(), and exif_loader_write().
| void exif_loader_unref | ( | ExifLoader * | loader | ) |
Decrease the refcount of the ExifLoader.
If the refcount reaches 0, the loader is freed.
| [in] | loader | ExifLoader for which to decrease the refcount |
Definition at line 369 of file exif-loader.c.
Referenced by exif_data_new_from_file(), and main().
| unsigned char exif_loader_write | ( | ExifLoader * | loader, | |
| unsigned char * | buf, | |||
| unsigned int | sz | |||
| ) |
Load a buffer into the ExifLoader from a memory buffer.
The relevant data is copied in raw form into the ExifLoader.
| [in] | loader | loader to write to |
| [in] | buf | buffer to read from |
| [in] | sz | size of the buffer |
Definition at line 153 of file exif-loader.c.
Referenced by exif_loader_write(), exif_loader_write_file(), and main().
| void exif_loader_write_file | ( | ExifLoader * | loader, | |
| const char * | fname | |||
| ) |
Load a file into the given ExifLoader from the filesystem.
The relevant data is copied in raw form into the ExifLoader.
| [in] | loader | loader to write to |
| [in] | fname | path to the file to read |
Definition at line 107 of file exif-loader.c.
Referenced by exif_data_new_from_file().
const unsigned char ExifHeader[] = {0x45, 0x78, 0x69, 0x66, 0x00, 0x00} [static] |
