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Various mdoc style and wording fixes.

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Reviewed by:	ariff
MFC after:	3 days
This commit is contained in:
Giorgos Keramidas 2008-05-28 05:46:04 +00:00
parent 906013e622
commit 9d031b92bb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=179371
1 changed files with 32 additions and 26 deletions
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58
share/man/man4/snd_emu10kx.4
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@ -25,7 +25,7 @@
.\"
.\" $FreeBSD$
.\"
.Dd July 15, 2007
.Dd May 28, 2008
.Dt SND_EMU10KX 4
.Os
.Sh NAME
@ -61,7 +61,7 @@ devices (see
.Sx MULTICHANNEL PLAYBACK
for details), and MPU401-compatible MIDI I/O controller, which is accessible
through the midi device.
Wave table synthesizer is not supported.
Wave table synthesizer support is not available.
.Sh HARDWARE
The
.Nm
@ -90,7 +90,7 @@ The
.Nm
driver does
.Em not
support the following sound cards (although they are named
support the following sound cards (although they have names
similar to some supported ones):
.Pp
.Bl -bullet -compact
@ -110,25 +110,29 @@ All other Creative sound cards with -DAT chipsets.
All Creative X-Fi series sound cards.
.El
.Sh MULTICHANNEL PLAYBACK
By default driver is loaded with multichannel playback capabilities enabled.
By default the
.Nm
driver is loaded with multichannel playback capabilities enabled.
If you do not set the
.Dv hint.emu10kx.0.multichannel_disabled
option in your
.Xr loader.conf 5
configuration file you will get up to
five DSP devices, one for each sound card output.
configuration file you will get up to five DSP devices, one for each
sound card output.
You can use additional software (like
.Em audio/pulseaudio
from
.Em The Ports Collection
) to do sound stream demultiplexing.
.Em The Ports Collection )
to do sound stream demultiplexing.
Only
.Dq FRONT
output can play and record sound from external
sources (like line or S/PDIF inputs).
.Sh MULTICHANNEL RECORDING
By default multichannel recording capabilities are not enabled when you load
this driver.
the
.Nm
driver.
If you enable the
.Dv hint.emu10kx.0.multichannel_recording
option in
@ -136,14 +140,14 @@ option in
you will get one more DSP device that is rate-locked to 48kHz/16bit/mono.
This is actually 48kHz/16bit/32 channels on SB Live! cards and
48kHz/16bit/64channels on Audigy cards, but the current implementation of
sound subsystem does not support such an amount of PCM channels.
the sound subsystem does not support such an amount of PCM channels.
This device can not be opened for read, thus confusing many applications.
.Pp
Within multichannel stream first half (0-15 or 0-31) is a copy of all DSP
outputs, second half (15-30 or 32-63) is a copy of some DSP inputs.
On Live! cards the last substream (31) is used as a sync stream and always
Within a multichannel stream , thefirst half (0-15 or 0-31) is a copy of all DSP
outputs, the second half (15-30 or 32-63) is a copy of some DSP inputs.
On Live! cards the last substream (31) is used as a sync stream and is always
set to 0xc0de.
Audigy cards do not need such sync data, because stream always start with
Audigy cards do not need such sync data, because a stream always starts with
substream 0.
.Ss SB Live! substream map (in byte offsets, each substream is 2 bytes LE)
.Bl -tag -width ".Dv +0x00..+0x1E"
@ -183,19 +187,20 @@ On newer cards the OSS mixer controls some parameters of the AC97 codec and
some DSP-based mixer controls.
.Bl -inset
.It Qq vol
mixer control is overall sound volume.
mixer control for the overall sound volume.
.It Qq pcm
mixer control is PCM playback volume.
mixer control for the PCM playback volume.
It controls only front output
volume in multichannel mode and all output volume in single channel mode.
.It Qq rec
mixer control acts very different on EMU10K1 and other cards.
On EMU10K1 cards it controls the AC97 codec recording level.
On non-EMU10K1 cards it controls the amount of AC97 "stereo mix" entering
the DSP.
On non-EMU10K1 cards it controls the amount of AC97
.Dq stereo mix
entering the DSP.
AC97 recording level and AC97 recording source are fixed on CA0100, CA0101,
CA0102 and CA0108 cards.
AC97 recording level are always set to maximum and recording source is always
The AC97 recording levels are always set to maximum and recording source is always
.Dq Li "stereo mix" .
.It Qq dig1
is a CD S/PDIF (on-card) volume control
@ -210,26 +215,27 @@ is AudigyDrive "Line In 2" volume control
is AudigyDrive "AUX In 2" volume control
.El
.Pp
Other OSS mixer controls control inputs of AC97 codec.
Other OSS mixer controls control the inputs of the AC97 codec.
.Sh PRIVATE DEVICE CONTROLS
You can control some of EMU10Kx operation and configuration parameters through
You can control some of EMU10Kx's operation and configuration parameters through
.Va dev.emu10kx. Ns Aq Ar X
sysctls.
These
.Xr sysctl 8
values are temporary and should not be relied
upon.
values are temporary and should not be relied upon.
.Sh DRIVER CONFIGURATION
Loader tunables are used to set driver configuration.
Tunables can be set at the
.Xr loader 8
prompt before booting the kernel or they can be stored in
.Pa /boot/loader.conf .
These tunables can't be changed from a maching
These tunables cannot be changed from a machine
.Xr sysctl 8
entry after boot, but you can change them using
.Xr kenv 1
while the driver is not loaded.
before loading the
.Nm
driver.
.Bl -tag -width indent
.It Va hint.emu10kx. Ns Ao Ar X Ac Ns Va .disabled
Disables loading a driver instance.
@ -285,7 +291,7 @@ The driver does not detect lost S/PDIF signals and produces noise when
S/PDIF is not connected and S/PDIF volume is not zero.
.Pp
The PCM driver cannot detect the presence of Live!Drive or AudigyDrive
breakout boxes and tries to use them (and list their connectors in the
breakout boxes and tries to use them (and list their connectors in the
mixer).
.Pp
The MIDI driver cannot detect the presence of Live!Drive or AudigyDrive