Specify the method to find an index entry in the index.
GST_INDEX_LOOKUP_EXACT
There has to be an exact indexentry with the given format/value
GST_INDEX_LOOKUP_BEFORE
The exact entry or the one before it
GST_INDEX_LOOKUP_AFTER
The exact entry or the one after it
Specify the method to find an index entry in the index. GST_INDEX_LOOKUP_EXACT There has to be an exact indexentry with the given format/value GST_INDEX_LOOKUP_BEFORE The exact entry or the one before it GST_INDEX_LOOKUP_AFTER The exact entry or the one after it