[Libexif-devel] How to write tags ?

[Jean-Philippe F. <jp....@cy...>]

Hi,

The libexif API seems to be mainly oriented toward reading exif data.
For example :
There is a :
  exif_entry_get_value() function,

but no
  exif_entry_set_value() function

I am using this library to build an exif section "from scratch" and o
I find it quite helpful, but I am missing some functions, and I don't
know if I am doing things correctly.

Anyway, to write data to an ascii tag, I have to mess with the content
of the ExifEntry struct like this :

     exif_entry_initialize(MyEntry, EXIF_TAG_IMAGE_DESCRIPTION);
     MyEntry->data = realloc(MyEntry->data, ASCII_TAG_DEFAULT_SIZE);
     MyEntry->size = ASCII_TAG_DEFAULT_SIZE;
     MyEntry->components = ASCII_TAG_DEFAULT_SIZE;
     snprintf(MyEntry->data, MyEntry->size, "JPEG Image");


Did I miss something ?