Truxton file create exif - Revision history

Sam at 08:56, 13 February 2021

2021-02-13T08:56:36Z

Sam at 15:26, 22 December 2020

2020-12-22T15:26:06Z

Sam at 16:54, 4 December 2020

2020-12-04T16:54:41Z

Sam: /* Sample */

2020-06-13T08:23:01Z

Sample

Sam: /* Sample */

2020-06-10T08:16:25Z

Sample

Sam: Created page with "This creates an EXIF object sourced from this file that you can use in the EXIF API. An EXIF object is how you add records to the..."

2020-06-10T07:43:28Z

Created page with "This creates an EXIF object sourced from this file that you can use in the EXIF API. An EXIF object is how you add records to the..."

New page

This creates an EXIF object sourced from this file that you can use in the [[Truxton C API#EXIF (Camera Information) | EXIF API.]]
An EXIF object is how you add records to the <code>[[EXIF Table | EXIF]]</code> table.
The resulting EXIF object will automatically be associated with the file it was created from and with the media the file belongs to.

'''Note:''' Not all camera information comes from [https://en.wikipedia.org/wiki/Exif EXIF] sections.
Camera information can be exploited from anywhere in the file but the meta data will be stored in the <code>[[EXIF Table | EXIF]]</code> table.
=Syntax=
<syntaxhighlight lang="C">
uint64_t truxton_file_create_exif( uint64_t file_handle );
</syntaxhighlight>

=Parameters=
==<code>file_handle</code>==
The handle created by the [[truxton_file_open_id]] or [[truxton_file_open_md5]] call.

=Return value=
A handle to an EXIF object.

=Sample=
<syntaxhighlight lang="C" highlight="5">
void process_file(uint64_t truxton)
{
uint64_t file = truxton_file_open_md5(truxton, "9ec8fb6095c35eff2b236863b7caaf10");

uint64_t exif = truxton_file_create_exif(file);

truxton_exif_set_make(exif, "Ford");
truxton_exif_set_model(exif, "Mustang");
truxton_exif_set_device_time(exif, truxton_file_get_modified( parent_file ) );
truxton_exif_set_latitude(exif, 27.94999);
truxton_exif_set_longitude(exif, -82.354748);
truxton_exif_save(exif);
truxton_exif_destroy(exif);

truxton_file_destroy(file);
}
</syntaxhighlight>

@@ Line 21: / Line 21: @@
 =Sample=
 <source lang="C" highlight="5">
-void process_file(uint64_t truxton)
+void process_file( uint64_t truxton )
+{
-    uint64_t file = truxton_file_open_md5(truxton, "9ec8fb6095c35eff2b236863b7caaf10");
+    uint64_t file = truxton_file_open_md5( truxton, "9ec8fb6095c35eff2b236863b7caaf10" );
-    uint64_t exif = truxton_file_create_exif(file);
+    uint64_t exif = truxton_file_create_exif( file );
-    truxton_exif_set_make(exif, "Ford");
+    truxton_exif_set_make( exif, "Ford" );
-    truxton_exif_set_model(exif, "Mustang");
+    truxton_exif_set_model( exif, "Mustang" );
-    truxton_exif_set_device_time(exif, truxton_file_get_modified( file ) );
+    truxton_exif_set_device_time( exif, truxton_file_get_modified( file ) );
-    truxton_exif_set_latitude(exif, 27.94999);
+    truxton_exif_set_latitude( exif, 27.94999 );
-    truxton_exif_set_longitude(exif, -82.354748);
+    truxton_exif_set_longitude( exif, -82.354748 );
-    truxton_exif_save(exif);
+    truxton_exif_save( exif );
-    truxton_exif_destroy(exif);
+    truxton_exif_destroy( exif );
-    truxton_file_free(file);
+    truxton_file_free( file );
+}
 </source>

@@ Line 2: / Line 2: @@
 An EXIF object is how you add records to the <code><nowiki>[</nowiki>[[EXIF Table|EXIF]]<nowiki>]</nowiki></code> table.
 The resulting EXIF object will automatically be associated with the file it was created from and with the media the file belongs to.
 '''Note:''' Not all camera information comes from [https://en.wikipedia.org/wiki/Exif EXIF] sections.
 Camera information can be exploited from anywhere in the file but the meta data will be stored in the <code><nowiki>[</nowiki>[[EXIF Table|EXIF]]<nowiki>]</nowiki></code> table.
 =Syntax=
 <source lang="C">

@@ Line 34: / Line 34: @@
     truxton_exif_destroy(exif);
-    truxton_file_destroy(file);
+    truxton_file_free(file);
+}
 </syntaxhighlight>