add minimal server capability to aucat(1). When started in server

mode, it listens on an unix socket and mixes/demultiplexes any number
of full-duplex streams, doing necessary format conversions and
resampling on the fly.

programs can use the new libsa(3) library to play and record audio.
The library provides a very simple API to connect to the audio server;
if aucat(1) isn't running, it uses the audio(4) driver transparently
instead.

1 files changed, 7 insertions, 22 deletions

diff --git a/usr.bin/aucat/dev.h b/usr.bin/aucat/dev.h
index e5b50af53a3..b23fd9e1561 100644
--- a/usr.bin/aucat/dev.h
+++ b/usr.bin/aucat/dev.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dev.h,v 1.2 2008/08/14 09:58:55 ratchov Exp $	*/
+/*	$OpenBSD: dev.h,v 1.3 2008/10/26 08:49:43 ratchov Exp $	*/
 /*
  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
  *
@@ -22,37 +22,22 @@ struct aparams;
 struct file;
 struct abuf;
 
-extern unsigned dev_infr, dev_onfr;
+extern unsigned dev_bufsz, dev_round, dev_rate;
+extern unsigned dev_rate_div, dev_round_div;
 extern struct aparams dev_ipar, dev_opar;
 extern struct aproc *dev_mix, *dev_sub, *dev_rec, *dev_play;
-extern struct file  *dev_file;
 
-void dev_fill(void);
-void dev_flush(void);
-void dev_init(char *, struct aparams *, struct aparams *);
+void dev_roundrate(unsigned *, unsigned *);
+void dev_init(char *, struct aparams *, struct aparams *, unsigned);
 void dev_start(void);
 void dev_stop(void);
 void dev_run(int);
 void dev_done(void);
+void dev_sync(struct abuf *, struct abuf *);
 void dev_attach(char *,
     struct abuf *, struct aparams *, unsigned,
     struct abuf *, struct aparams *, unsigned);
 
-struct devops {
-	int (*open)(char *, struct aparams *, struct aparams *,
-	    unsigned *, unsigned *);
-	void (*close)(int);
-	void (*start)(int);
-	void (*stop)(int);
-};
-
-extern struct devops *devops, devops_sun;
-
-/*
- * Sun API specific functions
- */
-struct audio_prinfo;
-int sun_infotopar(struct audio_prinfo *, struct aparams *);
-void sun_partoinfo(struct audio_prinfo *, struct aparams *);
+extern struct devops *devops, devops_sun, devops_aucat;
 
 #endif /* !define(DEV_H) */