Commit Graph

16 Commits

Author SHA1 Message Date
augustss
658656bb99 Audio changes:
- Change the way attach and open works to allow multiple audio
	  devices.
	- Split the mulaw.c file into two to avoid dragging in mulaw
	  convertsion when they are not needed.  Add 16 bit alaw/mulaw tables.
	- Change the way audio properties are gotten.
	- Recognize more versions os SoundBlaster.
1997-07-31 22:33:08 +00:00
augustss
d58bc6796f audio: Simplify handling of AUDIO_SETFD and committing of encoding mode. 1997-07-27 23:51:48 +00:00
augustss
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
augustss
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
augustss
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
augustss
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
mark
b28684079f Fix broken vidcaudio_set_format() prototype. 1997-03-25 05:09:01 +00:00
mycroft
7a55cafeeb Implement set_format. 1997-03-20 16:51:38 +00:00
mycroft
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
mark
37f3875ce4 Use the IOMD_ID macro to check the IOMD ID number rather than direct reads
from the IOMD.
1996-11-23 03:37:35 +00:00
mark
535518ceed Added support for the A7000 and more generally for ARM7500 based machines
that are not RC7500 boards.
Fixed vidcaudio_sw_encode() and vidcaudio_sw_decode() functions.
1996-10-15 21:33:51 +00:00
christos
ca36ac9ef4 backout previous kprintf change 1996-10-13 03:05:43 +00:00
christos
60dd5ceebe printf -> kprintf, sprintf -> ksprintf 1996-10-11 00:06:28 +00:00
thorpej
5c67e5fad9 New device attachment scheme:
- split softc size and match/attach out from cfdriver into
	  a new struct cfattach.

	- new "attach" directive for files.*.  May specify the name of
	  the cfattach structure, so that devices may be easily attached
	  to parents with different autoconfiguration semantics.
1996-03-17 01:16:48 +00:00
mark
bdb7e8955c Reformatted code to suit style guide.
Fixed IOMD identification during driver probing.
1996-03-06 23:24:52 +00:00
mark
0705e7dfd1 Initial commit of the NetBSD/arm32 port. 1996-01-31 23:24:54 +00:00