Handling EXIF MakerNote tags.
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#include <libexif/exif-log.h>
Go to the source code of this file.
Typedefs |
typedef struct _ExifMnoteData | ExifMnoteData |
| Data found in the MakerNote tag.
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Functions |
void | exif_mnote_data_ref (ExifMnoteData *) |
void | exif_mnote_data_unref (ExifMnoteData *) |
void | exif_mnote_data_load (ExifMnoteData *d, const unsigned char *buf, unsigned int buf_siz) |
| Load the MakerNote data from a memory buffer.
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void | exif_mnote_data_save (ExifMnoteData *d, unsigned char **buf, unsigned int *buf_siz) |
| Save the raw MakerNote data into a memory buffer.
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unsigned int | exif_mnote_data_count (ExifMnoteData *d) |
| Return the number of tags in the MakerNote.
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unsigned int | exif_mnote_data_get_id (ExifMnoteData *d, unsigned int n) |
| Return the MakerNote tag number for the tag at the specified index within the MakerNote.
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const char * | exif_mnote_data_get_name (ExifMnoteData *d, unsigned int n) |
| Returns textual name of the given MakerNote tag.
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const char * | exif_mnote_data_get_title (ExifMnoteData *d, unsigned int n) |
| Returns textual title of the given MakerNote tag.
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const char * | exif_mnote_data_get_description (ExifMnoteData *d, unsigned int n) |
| Returns verbose textual description of the given MakerNote tag.
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char * | exif_mnote_data_get_value (ExifMnoteData *d, unsigned int n, char *val, unsigned int maxlen) |
| Return a textual representation of the value of the MakerNote entry.
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void | exif_mnote_data_log (ExifMnoteData *, ExifLog *) |
Detailed Description
Handling EXIF MakerNote tags.
Function Documentation
Return the number of tags in the MakerNote.
- Parameters:
-
- Returns:
- number of tags, or 0 if no MakerNote or the type is not supported
const char* exif_mnote_data_get_description |
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ExifMnoteData * |
d, |
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unsigned int |
n |
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Returns verbose textual description of the given MakerNote tag.
- Parameters:
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[in] | d | MakerNote data |
[in] | n | index of the entry within the MakerNote data |
- Returns:
- textual description of the tag
unsigned int exif_mnote_data_get_id |
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ExifMnoteData * |
d, |
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unsigned int |
n |
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Return the MakerNote tag number for the tag at the specified index within the MakerNote.
- Parameters:
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[in] | d | MakerNote data |
[in] | n | index of the entry within the MakerNote data |
- Returns:
- MakerNote tag number
const char* exif_mnote_data_get_name |
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ExifMnoteData * |
d, |
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unsigned int |
n |
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Returns textual name of the given MakerNote tag.
The name is a short, unique (within this type of MakerNote), non-localized text string containing only US-ASCII alphanumeric characters.
- Parameters:
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[in] | d | MakerNote data |
[in] | n | index of the entry within the MakerNote data |
- Returns:
- textual name of the tag
const char* exif_mnote_data_get_title |
( |
ExifMnoteData * |
d, |
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unsigned int |
n |
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Returns textual title of the given MakerNote tag.
The title is a short, localized textual description of the tag.
- Parameters:
-
[in] | d | MakerNote data |
[in] | n | index of the entry within the MakerNote data |
- Returns:
- textual name of the tag
char* exif_mnote_data_get_value |
( |
ExifMnoteData * |
d, |
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unsigned int |
n, |
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char * |
val, |
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unsigned int |
maxlen |
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) |
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Return a textual representation of the value of the MakerNote entry.
- Warning:
- The character set of the returned string may be in the encoding of the current locale or the native encoding of the camera.
- Parameters:
-
[in] | d | MakerNote data |
[in] | n | index of the entry within the MakerNote data |
[out] | val | buffer in which to store value |
[in] | maxlen | length of the buffer val |
- Returns:
- val pointer, or NULL on error
void exif_mnote_data_load |
( |
ExifMnoteData * |
d, |
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const unsigned char * |
buf, |
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unsigned int |
buf_siz |
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Load the MakerNote data from a memory buffer.
- Parameters:
-
[in] | d | MakerNote data |
[in] | buf | pointer to raw MakerNote tag data |
[in] | buf_siz | number of bytes of data at buf |
void exif_mnote_data_save |
( |
ExifMnoteData * |
d, |
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unsigned char ** |
buf, |
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unsigned int * |
buf_siz |
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) |
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Save the raw MakerNote data into a memory buffer.
The buffer is allocated by this function and must subsequently be freed by the caller.
- Parameters:
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[in,out] | d | extract the data from this structure |
[out] | buf | pointer to buffer pointer containing MakerNote data on return |
[out] | buf_siz | pointer to the size of the buffer |