Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help
vmixctl(7)			  OSS Devices			    vmixctl(7)

NAME
       oss_cmi878x - CMedia CMI8788 audio driver.

DESCRIPTION
       Open Sound System driver	for CMedia Electronics CMI8788 audio

       CMI87xx device characteristics:

	      o	 8/16/24/32 bit	playback/record

	      o	 mono/stereo/4ch/5.1/7.1 playback

	      o	 8KHz to 192Khz	sample rate.

       The  CMedia  8788 device	provides 3 types of devices. The first devices
       is a Multichannel full duplex device. The second	device provides	 Front
       Panel  audio  access and	the SPDIF device provide SPDIF (Digital) audio
       I/O.

   MIXER PANEL
       The CMedia chip provides	some unique features that are set  up  by  the
       Mixer chip. There are 3 mixer devices presented to the user.

       Main Mixer Panel	(/dev/mixer0)

       o  Master Mixer panel is	for controlling	output volumes for each	of the
	  8 channels.

       o  Monitor buttons will allow you to monitor the	input  from  the  Rear
	  Panel	inputs,	Front Panel Inputs and SPDIF IN.

       o  Speaker-Spread function duplicates the front channel output on all 8
	  speakers.

       o  SPDIF	Loopback simply	takes SPDIF Input and Plays it out  the	 SPDIF
	  Output.  panel.

	      AC97 Input Mixer Panel (/dev/mixer1) This	mixer panel is used to
	      switch between the various inputs	like line-in,  mic,  cd.  When
	      the  Rear	Panel Monitor button is	check marked in	the Main mixer
	      panel, the IGAIN slider in this panel controls the level of  the
	      input that can be	hear on	the speakers.

	      AC97  Front  Panel  Mixer	 (/dev/mixer2) This mixer controls the
	      front panel ac97 device. It can be used to control all the  vol-
	      umes  and	 inputs	as well	as SPDIF output	on the front panel de-
	      vice.

OPTIONS
       None

FILES
       /usr/local/lib/oss/conf/oss_cmi878x.conf	Device configuration file

AUTHOR
       4Front Technologies

			       28 February 2021			    vmixctl(7)

NAME | DESCRIPTION | OPTIONS | FILES | AUTHOR

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=oss_cmi878x&sektion=7&manpath=FreeBSD+13.0-RELEASE+and+Ports>

home | help