don't prime server buffers, because it's ugly and conceptually

complicated. Instead, request clients to provide enough samples
and start with buffers full.

4 files changed, 18 insertions, 68 deletions

diff --git a/usr.bin/aucat/aucat.c b/usr.bin/aucat/aucat.c
index daa3d727d2c..e619167a9be 100644
--- a/usr.bin/aucat/aucat.c
+++ b/usr.bin/aucat/aucat.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: aucat.c,v 1.93 2010/06/05 12:45:48 ratchov Exp $	*/
+/*	$OpenBSD: aucat.c,v 1.94 2010/06/05 16:00:52 ratchov Exp $	*/
 /*
  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
  *
@@ -723,7 +723,7 @@ aucat_main(int argc, char **argv)
 		} else {
 			d = dev_new_sio(cd->path, cd->mode,
 			    &cd->ipar, &cd->opar, cd->bufsz, cd->round,
-			    cd->hold, l_flag);
+			    cd->hold);
 		}
 		if (d == NULL)
 			errx(1, "%s: can't open device", cd->path);
diff --git a/usr.bin/aucat/dev.c b/usr.bin/aucat/dev.c
index 19b73b08f70..3a259c42e9c 100644
--- a/usr.bin/aucat/dev.c
+++ b/usr.bin/aucat/dev.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dev.c,v 1.57 2010/06/04 06:15:28 ratchov Exp $	*/
+/*	$OpenBSD: dev.c,v 1.58 2010/06/05 16:00:52 ratchov Exp $	*/
 /*
  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
  *
@@ -105,7 +105,6 @@ void dev_close(struct dev *);
 void dev_start(struct dev *);
 void dev_stop(struct dev *);
 void dev_clear(struct dev *);
-void dev_prime(struct dev *);
 
 struct dev *dev_list = NULL;
 
@@ -115,7 +114,7 @@ struct dev *dev_list = NULL;
 struct dev *
 dev_new_sio(char *path,
     unsigned mode, struct aparams *dipar, struct aparams *dopar,
-    unsigned bufsz, unsigned round, unsigned hold, unsigned prime)
+    unsigned bufsz, unsigned round, unsigned hold)
 {
 	struct dev *d;
 
@@ -132,7 +131,6 @@ dev_new_sio(char *path,
 		d->reqipar = *dipar;
 	d->reqbufsz = bufsz;
 	d->reqround = round;
-	d->prime = prime;
 	d->hold = hold;
 	d->pstate = DEV_CLOSED;
 	d->next = dev_list;
@@ -171,7 +169,6 @@ dev_new_loop(struct aparams *dipar, struct aparams *dopar, unsigned bufsz)
 	d->reqmode = MODE_PLAY | MODE_REC | MODE_LOOP;
 	d->pstate = DEV_CLOSED;
 	d->hold = 0;
-	d->prime = 0;
 	d->next = dev_list;
 	dev_list = d;
 	return d;
@@ -193,7 +190,6 @@ dev_new_thru(void)
 	d->reqmode = 0;
 	d->pstate = DEV_CLOSED;
 	d->hold = 0;
-	d->prime = 0;
 	d->next = dev_list;
 	dev_list = d;
 	return d;
@@ -391,8 +387,6 @@ dev_open(struct dev *d)
 	}
 #endif
 	d->pstate = DEV_INIT;
-	if (d->prime)
-		dev_prime(d);
 	return 1;
 }
 
@@ -748,11 +742,8 @@ dev_run(struct dev *d)
 			dev_stop(d);
 			if (d->refcnt == 0 && !d->hold)
 				dev_close(d);
-			else {
+			else
 				dev_clear(d);
-				if (d->prime)
-					dev_prime(d);
-			}
 		}
 		break;
 	}
@@ -760,10 +751,7 @@ dev_run(struct dev *d)
 }
 
 /*
- * If the device is paused, then resume it. If the caller is using
- * full-duplex and its buffers are small, the ``prime'' flag
- * could be set to initialize device buffers with silence
- *
+ * If the device is paused, then resume it.
  * This routine can be called from aproc context.
  */
 void
@@ -1151,26 +1139,3 @@ dev_clear(struct dev *d)
 		mon_clear(d->mon);
 	}
 }
-
-/*
- * Fill with silence play buffers and schedule the same amount of recorded
- * samples to drop
- */
-void
-dev_prime(struct dev *d)
-{
-
-#ifdef DEBUG
-	if (debug_level >= 3)
-		dbg_puts("priming device\n");
-#endif
-	if (APROC_OK(d->mix)) {
-#ifdef DEBUG
-		if (!LIST_EMPTY(&d->mix->ins)) {
-			dbg_puts("play end not idle, can't prime device\n");
-			dbg_panic();	
-		}
-#endif
-		mix_prime(d->mix);
-	}
-}
diff --git a/usr.bin/aucat/dev.h b/usr.bin/aucat/dev.h
index 62ad96b074e..ab8f412fd23 100644
--- a/usr.bin/aucat/dev.h
+++ b/usr.bin/aucat/dev.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: dev.h,v 1.24 2010/06/04 06:15:28 ratchov Exp $	*/
+/*	$OpenBSD: dev.h,v 1.25 2010/06/05 16:00:52 ratchov Exp $	*/
 /*
  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
  *
@@ -32,7 +32,6 @@ struct dev {
 	unsigned reqbufsz;			/* buffer size */
 	unsigned reqround;			/* block size */
 	unsigned reqrate;			/* sample rate */
-	unsigned prime;				/* prime play buffer? */
 	unsigned hold;				/* hold the device open ? */
 	unsigned refcnt;			/* number of openers */
 #define DEV_CLOSED	0			/* closed */
@@ -63,8 +62,7 @@ void dev_wakeup(struct dev *);
 struct dev *dev_new_thru(void);
 struct dev *dev_new_loop(struct aparams *, struct aparams *, unsigned);
 struct dev *dev_new_sio(char *, unsigned, 
-    struct aparams *, struct aparams *, unsigned, unsigned,
-    unsigned, unsigned);
+    struct aparams *, struct aparams *, unsigned, unsigned, unsigned);
 int  dev_thruadd(struct dev *, char *, int, int);
 void dev_midiattach(struct dev *, struct abuf *, struct abuf *);
 unsigned dev_roundof(struct dev *, unsigned);
diff --git a/usr.bin/aucat/sock.c b/usr.bin/aucat/sock.c
index 624b1ecd5ea..4eec95f70e6 100644
--- a/usr.bin/aucat/sock.c
+++ b/usr.bin/aucat/sock.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: sock.c,v 1.49 2010/06/05 12:45:48 ratchov Exp $	*/
+/*	$OpenBSD: sock.c,v 1.50 2010/06/05 16:00:52 ratchov Exp $	*/
 /*
  * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
  *
@@ -409,23 +409,25 @@ void
 sock_allocbuf(struct sock *f)
 {
 	struct abuf *rbuf = NULL, *wbuf = NULL;
+	unsigned bufsz;
 
+	bufsz = f->bufsz + f->dev->bufsz / f->dev->round * f->round;
 	f->pstate = SOCK_START;
 	if (f->mode & AMSG_PLAY) {
-		rbuf = abuf_new(f->bufsz, &f->rpar);
+		rbuf = abuf_new(bufsz, &f->rpar);
 		aproc_setout(f->pipe.file.rproc, rbuf);
 		if (!ABUF_WOK(rbuf) || (f->pipe.file.state & FILE_EOF))
 			f->pstate = SOCK_READY;
+		f->rmax = bufsz * aparams_bpf(&f->rpar);
 	}
 	if (f->mode & AMSG_RECMASK) {
-		wbuf = abuf_new(f->bufsz, &f->wpar);
+		wbuf = abuf_new(bufsz, &f->wpar);
 		aproc_setin(f->pipe.file.wproc, wbuf);
 		f->walign = f->round;
+		f->wmax = 0;
 	}
 	f->delta = 0;
 	f->startpos = 0;
-	f->wmax = 0;
-	f->rmax = f->bufsz;
 	f->tickpending = 0;
 	f->startpending = 0;
 #ifdef DEBUG
@@ -433,6 +435,8 @@ sock_allocbuf(struct sock *f)
 		sock_dbg(f);
 		dbg_puts(": allocating ");
 		dbg_putu(f->bufsz);
+		dbg_puts("/");
+		dbg_putu(bufsz);
 		dbg_puts(" fr buffers, rmax = ");
 		dbg_putu(f->rmax);
 		dbg_puts("\n");
@@ -926,24 +930,6 @@ sock_setpar(struct sock *f)
 		}
 #endif
 	}
-	if (AMSG_ISSET(p->bufsz)) {
-		/*
-		 * XXX: bufsz will become read-only, but for now
-		 *      allow old library to properly work
-		 */
-#ifdef DEBUG
-		if (debug_level >= 1) {
-			sock_dbg(f);
-			dbg_puts(": legacy client using ");
-			dbg_putx(p->bufsz);
-			dbg_puts("fr total buffer size\n");
-		}
-#endif
-		min = (f->dev->bufsz / f->dev->round) * f->round;
-		if (p->bufsz < min)
-			p->bufsz = min;
-		p->appbufsz = p->bufsz - min;
-	}
 	if (AMSG_ISSET(p->appbufsz)) {
 		rate = (f->mode & AMSG_PLAY) ? f->rpar.rate : f->wpar.rate;
 		min = 1;
@@ -1508,6 +1494,7 @@ sock_buildmsg(struct sock *f)
 		AMSG_INIT(&f->wmsg);
 		f->wmsg.cmd = AMSG_POS;
 		f->wmsg.u.ts.delta = f->startpos;
+		f->rmax += f->startpos;
 		f->wtodo = sizeof(struct amsg);
 		f->wstate = SOCK_WMSG;
 		f->startpending = 0;