Hi! I’m working on implementing FMOD into a custom engine of mine that I’ve been writing in C#.
So far everything has been working just fine, until I decided to try implementing custom filesystem callbacks for loading/writing using the content pipeline I’ve written.
When I try to load a file, I get the error ERR_FILE_BAD, which I would assume means that there’s an issue with the file data, and after adding breakpoints to my FS callbacks I noticed that the
userread callback is never invoked, which leads me to believe that FMOD is doing some funky stuff(or maybe the C# GC, but that doesn’t make sense given the code I’ll be attaching).
Code responsible for FS callbacks(ReferenceTable is just a simple helper for storing the Streams, the IntPtr’s are just keys to a dictionary): FS functions - Pastebin.com
Setting of the filesystem is done just before StudioSystem.initialize like so:
CoreSystem.setFileSystem(FSUserOpen, FSUserClose, FSUserRead, FSUserSeek, null!, null!, -1);
EDIT: I forgot to attach the code responsible for loading the banks:
RESULT result = StudioSystem.loadBankFile(bank, LOAD_BANK_FLAGS.NORMAL, out bankH);
bankH is a
Bank, and bank is a string w/ a path.
I also forgot to tell you how Content.LoadXXX works.
Load - Loads a so-called ContentLump, basically just a way to keep track of content data.
LoadStream - Makes the Lump into a stream(in this case it returns a FIleStream)
I should probably tell you what I have been able to see FMOD do:
- Call FSUserOpen
- Call FSUserSeek - Seeking to 0 with success
- Call FSUserClose
- Return ERR_FILE_BAD
I have debug logging set up, and it does not contain any related info, nor does it log anything during bank logging.
Wow, a lot of edits, huh?
I got some stuff out of FMOD regarding file loading: