Difference between revisions of "EXIF"
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'''See also''' | '''See also''' | ||
:[[IPTC#gflBitmapHasIPTC|gflBitmapHasIPTC]], [[#gflBitmapGetEXIF|gflBitmapGetEXIF]], [[#gflFreeEXIF|gflFreeEXIF]], [[#gflBitmapRemoveEXIFThumbnail|gflBitmapRemoveEXIFThumbnail]], [[Misc#gflBitmapRemoveMetaData|gflBitmapRemoveMetaData]] | :[[IPTC#gflBitmapHasIPTC|gflBitmapHasIPTC]], [[#gflBitmapGetEXIF|gflBitmapGetEXIF]], [[#gflFreeEXIF|gflFreeEXIF]], [[#gflBitmapRemoveEXIFThumbnail|gflBitmapRemoveEXIFThumbnail]], [[Misc#gflBitmapRemoveMetaData|gflBitmapRemoveMetaData]] | ||
== gflBitmapGetEXIF == | == gflBitmapGetEXIF == | ||
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'''See also''' | '''See also''' | ||
:[[#gflBitmapHasEXIF|gflBitmapHasEXIF]], [[#gflFreeEXIF|gflFreeEXIF]] | :[[#gflBitmapHasEXIF|gflBitmapHasEXIF]], [[#gflFreeEXIF|gflFreeEXIF]] | ||
== gflFreeEXIF == | == gflFreeEXIF == | ||
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'''See also''' | '''See also''' | ||
:[[#gflBitmapHasEXIF|gflBitmapHasEXIF]], [[#gflBitmapGetEXIF|gflBitmapGetEXIF]] | :[[#gflBitmapHasEXIF|gflBitmapHasEXIF]], [[#gflBitmapGetEXIF|gflBitmapGetEXIF]] | ||
== gflBitmapGetEXIFValue == | |||
The gflBitmapGetEXIFValue allow to get a tag from EXIF metadata. | |||
GFL_ERROR <b>gflBitmapGetEXIFValue</b>( | |||
const GFL_BITMAP* bitmap, | |||
GFL_UINT32 tag, | |||
char* value, | |||
GFL_INT32 value_length | |||
); | |||
'''Parameters''' | |||
:bitmap | |||
::Pointer to a [[Structures#GFL_BITMAP|GFL_BITMAP]] structure | |||
:tag | |||
::EXIF tag | |||
:value | |||
::Pointer to a char array (string) | |||
:value_length | |||
::Maximum length of the string | |||
'''Return value''' | |||
:The function returns GFL_NO_ERROR if it is successful or a value of [[Error|GFL_ERROR]]. | |||
Revision as of 15:22, 23 September 2009
gflBitmapHasEXIF
The gflBitmapHasEXIF function is used to know if the picture has EXIF metadata.
GFL_BOOL gflBitmapHasEXIF( const GFL_BITMAP* bitmap );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure.
Return value
- The function returns GFL_TRUE if the bitmap has EXIF metadata.
See also
- gflBitmapHasIPTC, gflBitmapGetEXIF, gflFreeEXIF, gflBitmapRemoveEXIFThumbnail, gflBitmapRemoveMetaData
gflBitmapGetEXIF
The gflBitmapGetEXIF function returns EXIF metadata in a readable form.
GFL_EXIF_DATA* gflBitmapGetEXIF( const GFL_BITMAP* bitmap, GFL_UINT32 flags );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure.
- flags
- Not used.
Return value
- The function returns a pointer to a GFL_EXIF_DATA structure.
See also
gflFreeEXIF
The gflFreeEXIF function frees memory allocated by gflBitmapGetEXIF function.
void gflFreeEXIF( GFL_EXIF_DATA* exif_data );
Parameters
- exif_data
- Pointer to a GFL_EXIF_DATA structure.
See also
gflBitmapGetEXIFValue
The gflBitmapGetEXIFValue allow to get a tag from EXIF metadata.
GFL_ERROR gflBitmapGetEXIFValue( const GFL_BITMAP* bitmap, GFL_UINT32 tag, char* value, GFL_INT32 value_length );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure
- tag
- EXIF tag
- value
- Pointer to a char array (string)
- value_length
- Maximum length of the string
Return value
- The function returns GFL_NO_ERROR if it is successful or a value of GFL_ERROR.
gflBitmapRemoveEXIFThumbnail
The gflBitmapRemoveEXIFThumbnail function remove thumbnail from EXIF metadata.
GFL_ERROR gflBitmapRemoveEXIFThumbnail( GFL_BITMAP* bitmap );
Parameters
- bitmap
- Pointer to a GFL_BITMAP structure.
See also