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Simplify and improve the way options are parsed and remove ~300 lines
of code that becomes unused. Few command line arguments changes are
required though:

  - stream definitions (-ios) now must follow devices definitions they
    are attached to (-fMn)

  - the -n option is now a special "loopback" device and is thus used
    like -f, eg it must precede streams

  - in midicat, midi thru boxes are not created automatically anymore,
    the new "-M" option must be used for that

  - channel numbers (-Cc options) correspond always to channel numbers
    of the hardware.

  - the -u option isn't needed anymore

  - increase the log verbosity so user errors are logged
    without using -d

tested by many, help from jmc

/*	$OpenBSD: conf.h,v 1.23 2011/10/12 07:20:04 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 CONF_H
#define CONF_H

#ifdef DEBUG
#include <signal.h>

/*
 * Debug trace levels:
 *
 * 0 - fatal errors: bugs, asserts, internal errors.
 * 1 - warnings: bugs in clients, failed allocations, non-fatal errors.
 * 2 - misc information (hardware parameters, incoming clients)
 * 3 - structural changes (new aproc structures and files stream params changes)
 * 4 - data blocks and messages
 */
extern volatile sig_atomic_t debug_level;
#endif

/*
 * MIDI buffer size
 */
#define MIDI_BUFSZ		3125	/* 1 second at 31.25kbit/s */

/*
 * units used for MTC clock.
 */
#define MTC_SEC			2400	/* 1 second is 2400 ticks */

/*
 * device or sub-device mode, must be a superset of corresponding SIO_XXX
 * and MIO_XXX constants
 */
#define MODE_PLAY	0x01	/* allowed to play */
#define MODE_REC	0x02	/* allowed to rec */
#define MODE_MIDIOUT	0x04	/* allowed to read midi */
#define MODE_MIDIIN	0x08	/* allowed to write midi */
#define MODE_MON	0x10	/* allowed to monitor */
#define MODE_LOOP	0x20	/* deviceless mode */
#define MODE_THRU	0x40	/* pass thru insted of device control */
#define MODE_PLAYREC	(MODE_PLAY | MODE_REC)
#define MODE_RECMASK	(MODE_REC | MODE_MON)
#define MODE_AUDIOMASK	(MODE_PLAY | MODE_REC | MODE_MON)
#define MODE_MIDIMASK	(MODE_MIDIIN | MODE_MIDIOUT)

/*
 * underrun/overrun policies, must be the same as SIO_XXX
 */
#define XRUN_IGNORE	0	/* on xrun silently insert/discard samples */
#define XRUN_SYNC	1	/* catchup to sync to the mix/sub */
#define XRUN_ERROR	2	/* xruns are errors, eof/hup buffer */

#endif /* !defined(CONF_H) */