IABSD.fr/src/usr.bin/sndiod/opt.h

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• Author : ratchov
  Date : 2026-05-20 13:02:04
  Hash : 3388eece
  Message : sndiod: Add the server.mode control making the setting dynamic The default mode remains "-m play,rec" but now it can be changed with sndioctl(1). If the server is switched to play-only mode, then existing clients will start recording silence. Similarly if it's switched to rec-only mode, clients are muted. ok armani, deraadt, rsadowski

• usr.bin/sndiod/opt.h

• /*	$OpenBSD: opt.h,v 1.12 2026/05/20 13:02:04 ratchov Exp $	*/
  /*
   * Copyright (c) 2008-2012 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 OPT_H
  #define OPT_H
  
  #define OPT_NMAX		16
  #define OPT_NAPP		8
  
  struct dev;
  
  struct app {
  #define APP_NAMEMAX	12
  	char name[APP_NAMEMAX];		/* name matching [a-z]+ */
  	unsigned int serial;		/* global unique number */
  	int vol;
  };
  
  struct opt_alt {
  	struct opt_alt *next;
  	struct dev *dev;
  };
  
  struct opt {
  	struct opt *next;
  	struct dev *dev;
  	struct opt_alt *alt_list;
  	struct midi *midi;
  	struct mtc *mtc;	/* if set, MMC-controlled MTC source */
  
  	struct app app_array[OPT_NAPP];
  	unsigned int app_serial;
  
  	int num;
  #define OPT_NAMEMAX 11
  	char name[OPT_NAMEMAX + 1];
  	int maxweight;		/* max dynamic range for clients */
  	int pmin, pmax;		/* play channels */
  	int rmin, rmax;		/* recording channels */
  	int dup;		/* true if join/expand enabled */
  	int mode;		/* bitmap of MODE_XXX */
  	int refcnt;
  };
  
  struct opt_mode {
  	int bit;
  	char *name;
  };
  
  extern struct opt *opt_list;
  
  extern const struct opt_mode opt_modes[];
  
  struct app *opt_mkapp(struct opt *o, char *who);
  void opt_appvol(struct opt *o, struct app *a, int vol);
  void opt_midi_vol(struct opt *, struct app *);
  void opt_midi_appdesc(struct opt *o, struct app *a);
  void opt_midi_dump(struct opt *o);
  struct opt *opt_new(struct dev *, char *, int, int, int, int,
      int, int, int, unsigned int);
  void opt_del(struct opt *);
  void opt_setalt(struct opt *, struct dev *);
  struct opt *opt_byname(char *);
  struct opt *opt_bynum(int);
  void opt_init(struct opt *);
  void opt_done(struct opt *);
  void opt_setmode(struct opt *, int, int);
  int opt_setdev(struct opt *, struct dev *);
  void opt_migrate(struct opt *, struct dev *);
  struct dev *opt_ref(struct opt *);
  void opt_unref(struct opt *);
  
  #endif /* !defined(OPT_H) */