f6cd87f322
audio: Minor cleanup and enable looping DMA for PSS and PAS.
1997-07-28 01:31:50 +00:00
d58bc6796f
audio: Simplify handling of AUDIO_SETFD and committing of encoding mode.
1997-07-27 23:51:48 +00:00
63decd9438
Fix divide by 0 bug in audio driver.
1997-07-27 23:06:04 +00:00
9745684ebe
Changes to the sudio system:
...
- It is now possible to handle devices that want "looping" DMA,
e.g. the SoundBlaster correctly. The WSS and SB drivers use this.
To do this several new methods were introduced in audio_hw_if.
- Different silence handling (forced by previous change).
- The audio driver can now be mmap()-ed, but due to problems in
the VM system only for writing for now.
- The OSS (Linux) audio emulation takes advantage of some of the
new features.
1997-07-27 01:16:32 +00:00
8727da130b
In the name of backwards compatibility AUDIO_ENCODING_LINEAR has been
...
renamed AUDIO_ENCODING_SLINEAR and AUDIO_ENCODING_LINEAR reverts to the
NetBSD 1.2 sematics. A kernel with COMPAT_12 defined will accept
AUDIO_ENCODING_LINEAR and treat it as before, without COMPAT_12 it
will be rejected.
1997-07-15 07:46:04 +00:00
73ff4bd775
Allow more than one hardware driver to attach to the audio upper layer.
1997-05-27 23:24:56 +00:00
1fd29f4172
Make the audio default parameters into a globally accessible constant.
1997-05-20 12:51:43 +00:00
d7a82223f4
Change lowater calculation a little.
...
Fix mixer setting bug and add some missing splaudio().
Set SB drq16 to 5 and don't pretend to be SB v1.0.
1997-05-17 23:26:33 +00:00
4b487c00bd
Clean up audio_silence_copyout().
1997-05-11 00:41:12 +00:00
c7be49441e
fix typo: LINEAR should have been ULINEAR
1997-05-10 19:01:53 +00:00
e63a553175
Change the interface between high and lowlevel audio drivers again:
...
Set the encoding parameters slightly differently.
Remove the SW encoding/decodinf functions from this interface
and move them to the audio_parameter struct; this is both more efficient
and flexible.
1997-05-09 22:16:27 +00:00
c397fa8357
Return audio buffer size in audio_info_t with ioctl() AUDIO_GETINFO.
...
Use the buffer size to implement one more OSS ioctl().
1997-05-07 19:24:25 +00:00
c4a52794f1
Convert to new orthogonal audio encoding scheme and implement
...
some of the new encodings. The change to ioctl AUDIO_GETENC is
NOT backwards compatible.
1997-05-07 18:51:31 +00:00
269ccaa71b
Fix typo in last commit; from Thorsten Frueauf <frueauf@ira.uka.de>
...
in PR/3566.
1997-05-01 12:27:10 +00:00
526ef2f618
Change the interface between the high and low level audio drivers
...
so that all audio encoding parameters are set at once. This simplifies
the interface and make error checking easier.
1997-04-29 21:01:33 +00:00
231a4bfb1f
Remove bogus pointer cast.
...
Accept FIONBIO ioctls.
1997-04-19 21:25:43 +00:00
2c6048e49f
Make sure to recalculate the block size after changing the
...
sampling rate. Also, nuke the global variable audio_blocksize.
1997-03-20 16:13:55 +00:00
c1cc14fa25
Combine set_encoding and set_precision into a single set_format interface.
1997-03-20 06:48:48 +00:00
8b4878a6ba
Fill in silence-padded blocks so we don't get gaps. From PR 3357,
...
by Lennart Augustsson.
1997-03-20 03:19:53 +00:00
b0c4e068d0
Modify audio_fill_silence() to take an encoding number rather than a softc*
...
and mode.
1997-03-13 02:45:07 +00:00
ac3b8b13b7
Don't share the silence block between devices. Make silence filling work for
...
more encodings, and make it device-independent. From Lennart Augustsson, in
PR kern/3305.
1997-03-13 02:19:32 +00:00
1c47a4325b
close 3079 from Jason Baker -- fixes a test in audio_poll
1997-01-18 04:02:58 +00:00
39379f9a46
Reset `sc_async' on device close.
1996-11-01 23:05:45 +00:00
aa8449a9ef
fix compile errors & warnings
1996-10-16 01:12:18 +00:00
86373f8cf9
backout kprintf changes
1996-10-13 01:37:04 +00:00
5d85fa8122
printf -> kprintf, sprintf -> ksprintf
1996-10-10 22:25:05 +00:00
2bc736661a
Implement poll(2).
1996-09-07 12:40:22 +00:00
e1ea13d92a
Fix typo.
1996-09-01 23:54:53 +00:00
664a66d009
Add mmap method for audio devices.
...
XXX This is just a placeholder to avoid updating conf.h again.
Also, clean up some error values.
1996-09-01 21:33:43 +00:00
4abbd9427d
Remove intr.h for now. This requires more work.
1996-05-13 02:26:15 +00:00
682960c500
Use intr.h on alpha and i386.
1996-05-13 01:01:55 +00:00
1e2c047be7
- Don't use dev_conf.h
...
- Remove unnecessary prototypes
- Fix ioctl arguments
- Don't use kprintf(...TO_LOG...); directly. This does not set the log
priority, and uses priority of the previous message. Use log() with %:
1996-03-30 22:51:23 +00:00
5c3bc6f120
Use %p as appropriate.
1996-03-29 00:11:42 +00:00
e023a87a11
Bring prototypes into scope.
1996-03-14 19:05:07 +00:00
d318abdbc4
prototypes for ccd audio and ncr5380
1996-03-07 15:00:07 +00:00
d1b5c90fd6
Check for errors while changing gain.
1996-02-20 11:47:22 +00:00
5f732f379e
Trivial (and probably not very good) implementation of SIGIO.
1996-02-20 10:00:31 +00:00
4f3fc10939
Fix PR#2060 (add AUDIO_PERROR ioctl to query # of playback drops), also
...
fix semantics of AUDIO_WERROR (now returns a count).
Also repair audio driver back to "real-time mode" where user must
provide data quickly enough for real time audio or silence is played
until user catches up. Add optional "play all" mode (additional bit in
mode field) to play all samples provided, with silence when needed to
avoid buffer underrun.
1996-02-17 02:28:56 +00:00
8ba7909bb4
Eliminate sc_silence, and handle output interrupts somewhat differently.
...
From John Kohl, slightly edited.
1996-02-16 02:25:43 +00:00
47246947c7
Adjust the low and high watermarks. Based on a suggestion from Lennart
...
Augustsson.
1996-02-08 03:05:34 +00:00
186d69c204
Don't adjust the number of blocks in the ring buffer if the driver
...
is currently outputting silence. Fix from Lennart Augustsson
<augustss@cs.chalmers.se>, closes PR #2010 .
1996-02-05 21:11:10 +00:00
0b6a86dfe5
Make the block size always a whole number of samples.
1996-01-07 06:21:02 +00:00
de0584fa25
Avoid zero blocksize (from David Huang; PR#1770).
1996-01-05 13:16:30 +00:00
13bf4371ae
delete extra (blank) line in comment block
1995-11-24 23:45:40 +00:00
693043d786
GUS audio driver from John Kohl.
1995-07-19 19:58:09 +00:00
0589b5a222
Make mode a flag set. Full-dpulex fixes from John Kohl.
1995-07-07 01:52:30 +00:00
cea924779e
call hw->setfd with param not ptr to it
1995-06-04 15:33:50 +00:00
c68110e043
Remove strings
1995-05-08 22:01:34 +00:00
2d93a58abd
Don't call hardware close in mixer_close(). From Rolf Grossmann <grossman@informatik.tu-muenchen.de>
1995-05-08 17:42:07 +00:00
f5675abf16
Set mixer type for rec and play level set. PR#1027
1995-05-08 16:06:38 +00:00
8951a20fe2
Auto-select open mode when opened half-duplex. From John Kohl. PR#1006
1995-05-05 22:36:14 +00:00
30f71c550f
A couple of fixes frm Rolf Grossmann.
1995-04-24 19:13:52 +00:00
fa37f29dc8
Make some functions non-static.
1995-04-17 23:04:31 +00:00
ff6c206c3f
Use void* rather than caddr_t in many places.
1995-03-25 00:00:53 +00:00
1f5bdc75a9
New audio subsystem
1995-02-21 01:35:58 +00:00
augustss