quartz: Only call begin process functions in transform filter when stopped.
[wine] / dlls / winenas.drv /
drwxr-xr-x   ..
-rw-r--r-- 324 Makefile.in
-rw-r--r-- 45301 audio.c
-rw-r--r-- 2628 nas.c
-rw-r--r-- 1028 nas.h
-rw-r--r-- 142 winenas.drv.spec