Midi & sequencer support from NetBSD, mostly by Lennart Augustsson

1 files changed, 94 insertions, 0 deletions

diff --git a/sys/dev/midivar.h b/sys/dev/midivar.h
new file mode 100644
index 00000000000..da3e1518d0f
--- /dev/null
+++ b/sys/dev/midivar.h
@@ -0,0 +1,94 @@
+/*	$OpenBSD: midivar.h,v 1.1 1999/01/02 00:02:38 niklas Exp $	*/
+/*	$NetBSD: midivar.h,v 1.6 1998/11/25 22:17:07 augustss Exp $	*/
+
+/*
+ * Copyright (c) 1998 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Lennart Augustsson (augustss@netbsd.org).
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _SYS_DEV_MIDIVAR_H_
+#define _SYS_DEV_MIDIVAR_H_
+
+#define MIDI_BUFSIZE 1024
+
+#include "sequencer.h"
+
+struct midi_buffer {
+	u_char	*inp;
+	u_char	*outp;
+	u_char	*end;
+	int	used;
+	int	usedhigh;
+	u_char	start[MIDI_BUFSIZE];
+};
+
+#define MIDI_MAX_WRITE 32	/* max bytes written with busy wait */
+#define MIDI_WAIT 10000		/* microseconds to wait after busy wait */
+
+struct midi_softc {
+	struct	device dev;
+	void	*hw_hdl;	/* Hardware driver handle */
+	struct	midi_hw_if *hw_if; /* Hardware interface */
+	struct	device *sc_dev;	/* Hardware device struct */
+	int	isopen;		/* Open indicator */
+	int	flags;		/* Open flags */
+	struct	midi_buffer outbuf;
+	struct	midi_buffer inbuf;
+	int	props;
+	int	rchan, wchan;
+	int	pbus;
+	struct	selinfo wsel;	/* write selector */
+	struct	selinfo rsel;	/* read selector */
+	struct	proc *async;	/* process who wants audio SIGIO */
+
+	/* MIDI input state machine */
+	int	in_state;
+#define MIDI_IN_START 0
+#define MIDI_IN_DATA 1
+#define MIDI_IN_SYSEX 2
+	u_char	in_msg[3];
+	u_char	in_status;
+	u_int	in_left;
+	u_int	in_pos;
+
+#if NSEQUENCER > 0
+	/* Synthesizer emulation stuff */
+	int	seqopen;
+	struct	midi_dev *seq_md; /* structure that links us with the seq. */
+#endif
+};
+
+#define MIDIUNIT(d) ((d) & 0xff)
+
+#endif /* _SYS_DEV_MIDIVAR_H_ */