add audiorecord and audioplay tools. audioplay does .au and .wav files. audiorecord makes .au files only. uses parts of audioctl..

Update to correct (minor) misstatememt pointed out on netbsd-users
by Ramiro Aceves.

(Someone with better knowledge of the audio system than I should
review this and correct anything I do not correctly understand.)

branches: 1.25.4;
fix various typos in comments, documentation and messages.
mainly s/paramater/parameter/ and s/reduntant/redundant/.

audioctl.1: describe foibles

branches: 1.23.2;
Sort options (no-argument options before ones demanding arguments).

Bump date.

Remove -p option. AUDIO_SETCHAN is insecure and is obsoleted.

branches: 1.21.12;
Audio now uses fdclone, there is no longer a limitation of one audio
instance per process. Virtual channels are placed in a queue, so there is
no longer a compile time limit of VAUDIOCHANS.

A new sysctl has been added to control multiple user access.
Mixer labels on virtual channels are now prefixed by vchan.

audiobell.c and audioctl have been updated to reflect these changes.

Use of fdclone was posted to tech-kern@ and improvements made.
Multiuser access control changes and the use of a queue were suggessted by
pgoyette@

branches: 1.20.2;
The audio sub-system now supports the following features as
posted to tech-kern:

* Simultaneous playback and mixing of multiple streams
* Playback streams can be of different encoding, frequency, precision
and number of channels
* Simultaneous recording to different formats
* One audio device per process
* Sysctls to set the common format frequency, precision and channels
* Independent mixer controls for recording/playback per stream
* Utilizes little cpu time for multiple streams / good performance
* Compatible with existing programs that use OSS/NetBSD audio
* Changes to audioctl(1) to allow specifying process id for corresponding
audio device

branches: 1.19.28;
Reorder sections to canonical order.

Convert TNF licenses to new 2 clause variant

branches: 1.17.32;
.Nm does not need a dummy argument ("") before punctuation or
for correct formatting of the SYNOPSIS any longer.

New sentence, new line. Use Aq/An.

Use '-d' rather than '-f' for specification of alternative
mixer or audioctl device. The support for '-f' is kept for compatibility
for now.

Sort sections, drop some whitespace.

Xref audioplay(1) and audiorecord(1).

branches: 1.12.2;
Add missing .El line.

Oops; update the date as well.

Update comments.

Rework the examples section a little.

Use audio and mixer devices with unit numbers. Also allow the devices
without unit numbers of a compatibility option is set. Fixes PR 5991.

Chnage the name of the environment variables just introduced.

Add an environment variable for the default audio device.

fix .Nm usage

Fix tipo inherited from old version of TNF copyright template.

Change to use /dev/audioctl.

Add HISTORY section.

Add audio utility programs.
The audio device can be inspected and changed by audioctl,
and the mixer device by mixerctl. The command syntax was
inspired by sysctl.

remove clause #3 from my license where there are no other
copyright holders involved.

branches: 1.3.34; 1.3.36;
de-__P()-ify

add missing copyrights.

add audiorecord and audioplay tools. audioplay does .au and .wav files. audiorecord makes .au files only. uses parts of audioctl..

Remove -p option. AUDIO_SETCHAN is insecure and is obsoleted.

branches: 1.43.12;
Renane ioctl AUDIO_SETPROC to AUDIO_SETCHAN.

Add an ioctl to return channel number (AUDIO_GETCHAN). This can be used
on audio/sound/audioctl devices.

Return EIO in read/write/ioctl/poll/stat if fp has been closed or is
invalid.

Update audio.4, audioio.h and audioctl(1) to reflect these changes.

Audio now uses fdclone, there is no longer a limitation of one audio
instance per process. Virtual channels are placed in a queue, so there is
no longer a compile time limit of VAUDIOCHANS.

A new sysctl has been added to control multiple user access.
Mixer labels on virtual channels are now prefixed by vchan.

audiobell.c and audioctl have been updated to reflect these changes.

Use of fdclone was posted to tech-kern@ and improvements made.
Multiuser access control changes and the use of a queue were suggessted by
pgoyette@

branches: 1.41.2;
The audio sub-system now supports the following features as
posted to tech-kern:

* Simultaneous playback and mixing of multiple streams
* Playback streams can be of different encoding, frequency, precision
and number of channels
* Simultaneous recording to different formats
* One audio device per process
* Sysctls to set the common format frequency, precision and channels
* Independent mixer controls for recording/playback per stream
* Utilizes little cpu time for multiple streams / good performance
* Compatible with existing programs that use OSS/NetBSD audio
* Changes to audioctl(1) to allow specifying process id for corresponding
audio device

branches: 1.40.8;
move most of the header writing code from record.c into wav.c and sun.c.

introduce a struct write_info for communication between front ends and
backends.

libaudio API is still pretty ugly, and needs to stay local here for now,
but it is a little more usable for other tools now.

branches: 1.39.2; 1.39.8;
ANSIfy. Add static. Add __dead.

fix -Wsign-compare and other WARNS=4 issues

branches: 1.37.8;
Remove clause 3 and 4 from TNF licenses

branches: 1.36.16;
use c99 initializer.

netbsd.org->NetBSD.org

Add NetBSD RCS Ids.

compatibility, not compatiblity.

Test for default device in a portable way. Thanks to Michael Ericsson
for spotting the problem.

Use _PATH_SOUND etc, all fall back to _PATH_SOUND0 (etc.) if that fails.

Delete the old code which made audioctl use stderr for output
if the stdout was same as the audio device. It's no longer relevant,
and the check was broken anyway (code used st_dev rather than st_rdev
when comparing the character devices).
A by-product of this is that 'audioctl -a > /dev/null' now works.

Okay'ed by Lennart.

Use '-d' rather than '-f' for specification of alternative
mixer or audioctl device. The support for '-f' is kept for compatibility
for now.

- WARNS=3 (from ross@netbsd.org)
- fix a bug in WAV conversions

Fix white space and formatting nits.

convert to use getprogname()

fix nested extern

de-__P()-ify

branches: 1.23.10;
audio paths are in <paths.h>

add audiorecord and audioplay tools. audioplay does .au and .wav files. audiorecord makes .au files only. uses parts of audioctl..

Make the copyright header conform to the NetBSD template.

Fix thinko in last commit.

Use audio and mixer devices with unit numbers. Also allow the devices
without unit numbers of a compatibility option is set. Fixes PR 5991.

audio_prinfo.seek is now a UINT

Make it possible to do:
audioctl -w play=44100,2,16,slinear

Not the greatest implementation.

__AUDIT__ cleanup.

Fix typo. From Feico Dillema <dillema@acm.org>

Chnage the name of the environment variables just introduced.

Add an environment variable for the default audio device.

Update for SunOS compatibility.

Print properties differently.
Change indentation.

Fix tipo inherited from old version of TNF copyright template.

Get rid of warnings.

Don't try opening the device O_RDWR.

Change to use /dev/audioctl.

Modernize for new audio features.

Sync with audioio.h changes.

Sync with the recent changes of the audio variables.
s/AUDIO_ENCODING_LINEAR_LE/AUDIO_ENCODING_SLINEAR_LE/
s/AUDIO_ENCODING_LINEAR_BE/AUDIO_ENCODING_SLINEAR_BE/

Fix pasto.

Fix some buglets and clean up a little.

Add audio utility programs.
The audio device can be inspected and changed by audioctl,
and the mixer device by mixerctl. The command syntax was
inspired by sysctl.