3D sound now plays in 3D.
COM interfaces should be correct for buffers and 3D stuff. The COM
interface is broken on notifications but I will fix that next.
Fixed the bug when closing and opening the same or another sound
device quickly.
Fixed some locking but there is a lot of work left yet.
- propagate driver and local function errors where needed
- fix error returns where pointer is given for returned data
- add 3d listener to primary buffer when needed
- copy 3d part of buffer when duplicated
- fix bug when primary buffer is reopened with smaller buffer
- loosen requirements on caps data size check
- set caps for emulated mode based on actual driver caps
separate files. Split primary buffer and secondary buffer interfaces
into separate implementations. Made the primary buffer state part of
the dsound object, so primary buffer objects can be created and
refcounted independently. Made the interfaces follow COM aggregation
rules more closely. Converted the dsound critical section to a R/W
lock to improve potential remixing concurrency. Fixed various bugs and
refcounting issues.
