src/sys/dev/sound/midi/sequencer.h, branch release/7.0.0_cvs

This commit was manufactured by cvs2svn to create tag

2008-02-24T05:45:17+00:00

'RELENG_7_0_0_RELEASE'.

This commit was manufactured to restore the state of the 7.0-RELEASE image.

semi-automatic style(9)

2007-02-25T13:51:52+00:00

Clean up the BSD license to match the preferred license in

2007-01-28T20:38:07+00:00

/usr/share/examples/etc/bsd-style-copyright.  I've fixed a
few minor wording and formatting differences.

Approved by:	matk, Hannu Savolainen 
Reviewed by:	imp

Commit the new (old) midi framework. It's based in parts on the NetBSD code,

2006-05-27T16:32:05+00:00

but large parts are rewritten by matk and tanimura.

This is old code, it's not maintained since 2003. We also don't have a
maintainer for this! Yuriy Tsibizov took it and uses it in his emu10kx
driver. Since the emu10kx driver will enter the tree "soon" (some bugs
have to be fixed after Yuriy return from his holidays), I add it here
already.

This also contains some changes to emu10k1 and cmi, so if you're lucky,
you can now make some kind of use of midi with those soundcards.

To all those poor souls which don't have such a card: feel free to send
patches, we don't have a maintainer for this.

To those which miss a specific feature in the midi code: feel free to
submit patches, we don't have a maintainer for this.

Oh, did I already told that it would be nice if someone would take care
of it? Maintainer with midi equipment wanted! :-)

If you get LOR's, submit a PR and notify multimedia@ please. If you get
panics, submit a PR with a backtrace (compile the sound system into your
kernel instead of using modules in this case) and notify multimedia@
please.

Written by:	matk, tanimura
Submitted by:	"Yuriy Tsibizov" 
Based upon:	code from NetBSD

Axe the old midi drivers and framework. matk has developed a new

2004-06-01T06:22:59+00:00

module-friendly midi subsystem to be merged soon.

- Provide toggles to show debug messages. Set new sysctl variables

2002-01-04T01:13:49+00:00

  hw.midi.debug and hw.midi.seq.debug to 1 to enable debug log.

- Make debug messages human-frendly.

- Implement /dev/music.

- Add a timer engine required by /dev/music.

- Fix nonblocking I/O.

- Fix the numbering of midi and synth devices.

- Do not uiomove with a mutex locked.

2002-01-01T17:36:26+00:00

- Move from msleep/wakeup to condvar.

- Return either zero or a positive errno value from a function.
  Return additional result via references.

- Unify the typedef of callback functions.

- Mutexify midi(4). The driver runs under the giant lock by default.

2001-02-26T07:36:24+00:00

If you ever want to run midi(4) out of the giant lock, uncomment
MIDI_OUTOFGIANT in midi.h. Confirmed to work for csamidi with WITNESS
and INVARIANTS.

- midi_info, midi_open and seq_info are now tailqs, allowing arbitrary
numbers of devices to be configured.

- Do not send an active sensing message to reset midi modules.

- Clone /dev/sequencer*. /dev/sequencer0 and /dev/sequencer are generated
upon initialization.

Since the unit number of a midi/sequencer device is expressed in 4

2000-09-18T10:17:38+00:00

bits, we can configure only up to 16 units.

Finally merge newmidi.

2000-07-11T11:49:33+00:00

(I had been busy for my own research activity until the last weekend)

Supported devices:

SB Midi Port			(sbc + midi)
SB OPL3				(sbc + midi)
16550 UART			(midi, needs a trick in your hint)
CS461x Midi Port		(csa + midi)

OSS-compatible sequencer	(seq)

Supported playing software:

playmidi			(We definitely need more)

Notes:

/dev/midistat now reports installed midi drivers. /dev/sndstat reports
only pcm drivers. We need the new name(pcmstat?).

EMU8000(SB AWE) does not sound yet but does get probed so that the OPL3
synth on an AWE card works.

TODO:

MSS/PCI bridge drivers
Midi-tty interface to support general serial devices
Modules