Wwise SDK 2018.1.11
This function will load the events, structural content, and optionally, the media content from the SoundBank. If the flag AkBankContent_All is specified, PrepareBank() will load the media content from the bank, but as opposed to LoadBank(), the media will be loaded one media item at a time instead of in one contiguous memory block. Using PrepareBank(), alone or in combination with PrepareEvent(), will prevent in-memory duplication of media at the cost of some memory fragmentation. Calling this function specifying the flag AkBankContent_StructureOnly will load only the structural part (including events) of this bank, allowing using PrepareEvent() to load media on demand.