ossaudio(3) - NetBSD Manual Pages

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OSSAUDIO(3)             NetBSD Library Functions Manual            OSSAUDIO(3)


NAME

     ossaudio -- OSS audio emulation


LIBRARY

     OSS Audio Emulation Library (libossaudio, -lossaudio)


SYNOPSIS

     #include <soundcard.h>


DESCRIPTION

     The ossaudio library provides an emulation of the OSS (Linux) audio
     interface.

     Use the native interface for new programs and the emulation library only
     for porting programs.

   Mixer Control Map
     The following table summarizes the mappings from native interface device
     names to OSS mixer controls.

     Native Device Name    OSS Mixer Control
     *.mic                 SOUND_MIXER_MIC
     *.line                SOUND_MIXER_LINE
     *.cd                  SOUND_MIXER_CD
     *.dac                 SOUND_MIXER_PCM
     *.aux                 SOUND_MIXER_LINE1
     *.record              SOUND_MIXER_IMIX
     *.master              SOUND_MIXER_VOLUME
     *.treble              SOUND_MIXER_TREBLE
     *.bass                SOUND_MIXER_BASS
     *.speaker             SOUND_MIXER_SPEAKER
     *.output              SOUND_MIXER_OGAIN
     *.input               SOUND_MIXER_IGAIN
     *.fmsynth             SOUND_MIXER_SYNTH
     *.midi                SOUND_MIXER_SYNTH


SEE ALSO

     audio(4), midi(4)


HISTORY

     The ossaudio library first appeared in NetBSD 1.3.


BUGS

     The emulation uses a #define for ioctl() so some obscure programs can
     fail to compile.

     The emulation is incomplete.

     The emulation only covers ioctl(), there are other differences as well.
     E.g., on a write that would block in non-blocking mode Linux returns
     EINTR whereas NetBSD 1.3 returns EAGAIN.

NetBSD 8.2                     February 3, 2009                     NetBSD 8.2