K 10
svn:author
V 5
ariff
K 8
svn:date
V 27
2007-05-13T20:53:40.000000Z
K 7
svn:log
V 829
MFC: [stage: 2/7]

Various fixups, especially for the upcomming High Definition Audio
commit.

1) sys/dev/sound/pcm/sound.h
   sys/dev/sound/pcm/channel.c
   * Be more specific: SD_F_SOFTVOL -> SD_F_SOFTPCMVOL
2) sys/dev/sound/pcm/mixer.[ch]
   * Implement
       mix_setparentchild()
       mix_setrealdev()
       mix_getparent()
       mix_getchild()
     The purpose of these functions is implement relative volume
     adjustment, such as to tie two or more mixer device into a
     single logical device. Usefull for the upcoming HDA driver
     and few AC97 codec where the master volume "vol" need to be
     implemented using this logical manner.
3) sys/dev/sound/pcm/ac97.c
   * ditto #1
   sys/dev/sound/pcm/usb/uaudio_pcm.c
   * ditto #1, hook "pcm" as logical child of "vol" if the real
     control does not exist.

END