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.Dd February 3, 2009 .Dt OSSAUDIO 3 .Os .Sh NAME .Nm ossaudio .Nd OSS audio emulation .Sh LIBRARY .Lb libossaudio .Sh SYNOPSIS n soundcard.h .Sh DESCRIPTION The .Nm library provides an emulation of the OSS (Linux) audio interface.
p Use the native interface for new programs and the emulation library only for porting programs. .Ss Mixer Control Map The following table summarizes the mappings from native interface device names to OSS mixer controls.
p l -column ".Sy Native Device Name" "SOUND_MIXER_SPEAKER" t Sy "Native Device Name" Ta Sy "OSS Mixer Control" t *.mic Ta SOUND_MIXER_MIC t *.line Ta SOUND_MIXER_LINE t *.cd Ta SOUND_MIXER_CD t *.dac Ta SOUND_MIXER_PCM t *.aux Ta SOUND_MIXER_LINE1 t *.record Ta SOUND_MIXER_IMIX t *.master Ta SOUND_MIXER_VOLUME t *.treble Ta SOUND_MIXER_TREBLE t *.bass Ta SOUND_MIXER_BASS t *.speaker Ta SOUND_MIXER_SPEAKER t *.output Ta SOUND_MIXER_OGAIN t *.input Ta SOUND_MIXER_IGAIN t *.fmsynth Ta SOUND_MIXER_SYNTH t *.midi Ta SOUND_MIXER_SYNTH .El .Sh SEE ALSO .Xr audio 4 , .Xr midi 4 .Sh HISTORY The .Nm library first appeared in .Nx 1.3 . .Sh BUGS The emulation uses a #define for .Fn ioctl so some obscure programs can fail to compile.
p The emulation is incomplete.
p The emulation only covers .Fn ioctl , there are other differences as well. E.g., on a write that would block in non-blocking mode Linux returns .Dv EINTR whereas .Nx 1.3 returns .Dv EAGAIN .
Indexes created Sat Oct 25 10:09:55 GMT 2025