Hans Petter Selasky 8461d581cf To support userspace audio daemons like Virtual OSS, /dev/sndstat is ... made writeable by the root user. Userspace audio daemons can add or update an entry in /dev/sndstat by doing a single system write call to any /dev/sndstat file descriptor handle. When the audio daemon closes the file handle or is killed the entry disappears. While at it, cleanup the sound status code a bit: - keep the device list sorted to avoid sorting the list every time a /dev/sndstat read request is made. - factor out locking into a pair of locking macros. - use the sound status lock to protect all per file handle states, when generating the output for /dev/sndstat and when removing or adding sound status devices. This way sndstat_acquire() and sndstat_release() become superfluous and can be removed. Reviewed by: mav @ Differential Revision: https://reviews.freebsd.org/D5191		2016-02-09 17:09:14 +00:00
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ac97.c
ac97.h
ac97_if.m
ac97_patch.c
ac97_patch.h
buffer.c
buffer.h
channel.c
channel.h
channel_if.m
dsp.c
dsp.h
feeder.c
feeder.h
feeder_chain.c
feeder_eq.c
feeder_format.c
feeder_if.m
feeder_matrix.c
feeder_mixer.c
feeder_rate.c
feeder_volume.c
g711.h
intpcm.h
matrix.h
matrix_map.h
mixer.c
mixer.h
mixer_if.m
pcm.h
sndstat.c
sndstat.h
sound.c
sound.h
vchan.c
vchan.h