Wwise SDK 2015.1.9

Returns the block size for the file or its storage device. The block size is a constraint for clients of the Stream Manager: All reads, writes and position changes need to be a multiple of that size.

Returns:

The block size for a specific file or storage device.

Remarks:

• Some files might be opened with flags that require I/O transfers to be a multiple of this size. The stream manager will query this function to resolve calls to IAk(Auto)Stream::GetBlockSize( ).
• Also, AkFileDesc::uSector specifies a number of sectors in multiples of this value.
• Files/IO devices that do not require byte alignment should return 1.
• Whether file opening was deferred or not, GetBlockSize() is always called right after the first call to Open(), in the client's thread, and is never called again.

Warning:

Returning 0 is not allowed and will likely make the Stream Manager crash.

See also:

• AK::StreamMgr::IAkFileLocationResolver::Open()
• AK::StreamMgr::IAkIOHookBlocking::Read()
• AK::StreamMgr::IAkIOHookBlocking::Write()
• AK::StreamMgr::IAkIOHookDeferred::Read()
• AK::StreamMgr::IAkIOHookDeferred::Write()

Parameters:

in_fileDesc

File descriptor.