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, 51 insertions, 0 deletions

diff --git a/usr.bin/aucat/wav.h b/usr.bin/aucat/wav.h
new file mode 100644
index 00000000000..dea4971d869
--- /dev/null
+++ b/usr.bin/aucat/wav.h
@@ -0,0 +1,51 @@
+/*	$OpenBSD: wav.h,v 1.1 2008/10/26 08:49:44 ratchov Exp $	*/
+/*
+ * Copyright (c) 2008 Alexandre Ratchov <alex@caoua.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+#ifndef WAV_H
+#define WAV_H
+
+#include <sys/types.h>
+
+#include "pipe.h"
+#include "aparams.h"
+
+struct wav {
+	struct pipe pipe;
+#define HDR_AUTO	0	/* guess by looking at the file name */
+#define HDR_RAW		1	/* no headers, ie openbsd native ;-) */
+#define HDR_WAV		2	/* microsoft riff wave */
+	unsigned hdr;		/* HDR_RAW or HDR_WAV */
+	struct aparams hpar;	/* parameters to write on the header */
+	off_t rbytes;		/* bytes to read, -1 if no limit */
+	off_t wbytes;		/* bytes to write, -1 if no limit */
+};
+
+extern struct fileops wav_ops;
+
+struct wav *wav_new_in(struct fileops *, int, char *,
+    struct aparams *, unsigned);
+struct wav *wav_new_out(struct fileops *, int, char *,
+    struct aparams *, unsigned);
+unsigned wav_read(struct file *, unsigned char *, unsigned);
+unsigned wav_write(struct file *, unsigned char *, unsigned);
+void wav_close(struct file *);
+int wav_readhdr(int, struct aparams *, off_t *);
+int wav_writehdr(int, struct aparams *);
+
+/* legacy */
+int legacy_play(char *, char *);
+
+#endif /* !defined(WAV_H) */