GstTagMergeMode

The different tag merging modes are basically replace, overwrite and append, but they can be seen from two directions. Given two taglists: A - the one that are supplied to gst_tag_setter_merge_tags() or gst_tag_setter_add_tags() and B - the tags already in the element, how are the tags merged? In the table below this is shown for the cases that a tag exists in the list (A) or does not exists (!A) and combination thereof. Table1.merge mode merge mode A + B A + !B !A + B !A + !B REPLACE_ALL B - B - REPLACE B A B - APPEND A, B A B - PREPEND B, A A B - KEEP A A B - KEEP_ALL A A - - GST_TAG_MERGE_UNDEFINED undefined merge mode GST_TAG_MERGE_REPLACE_ALL replace all tags (clear list and append) GST_TAG_MERGE_REPLACE replace tags GST_TAG_MERGE_APPEND append tags GST_TAG_MERGE_PREPEND prepend tags GST_TAG_MERGE_KEEP keep existing tags GST_TAG_MERGE_KEEP_ALL keep all existing tags GST_TAG_MERGE_COUNT the number of merge modes

Values

ValueMeaning
UNDEFINED
REPLACE_ALL
REPLACE
APPEND
PREPEND
KEEP
KEEP_ALL
COUNT

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