Date: Tue, 2 Jan 2001 17:29:48 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/sound/pcm mixer.c mixer.h Message-ID: <200101030129.f031Tmd41851@freefall.freebsd.org>
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jhb 2001/01/02 17:29:48 PST
Modified files:
sys/dev/sound/pcm mixer.c mixer.h
Log:
Add a new API for soundcards that have hardware volume control:
- The mixer_hwmute() function can be called when a soundcard receives a
mute request.
- The mixer_hwstep() function can be used to adjust the volume of one or
both channels.
- The 'hw.snd.hwvol_step' sysctl determines the amount that mixer_hwstep()
adjusts the volume by on each call.
- The 'hw.snd.hwvol_mixer' sysctl specifies the mixer device to adjust the
volume on for both functions. The values used correspond to the
SOUNDCARD_MIXER_* constants.
Revision Changes Path
1.14 +37 -1 src/sys/dev/sound/pcm/mixer.c
1.6 +4 -1 src/sys/dev/sound/pcm/mixer.h
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