The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/mixer.h

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    1 /*-
    2  * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
    3  * All rights reserved.
    4  *
    5  * Redistribution and use in source and binary forms, with or without
    6  * modification, are permitted provided that the following conditions
    7  * are met:
    8  * 1. Redistributions of source code must retain the above copyright
    9  *    notice, this list of conditions and the following disclaimer.
   10  * 2. Redistributions in binary form must reproduce the above copyright
   11  *    notice, this list of conditions and the following disclaimer in the
   12  *    documentation and/or other materials provided with the distribution.
   13  *
   14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   24  * SUCH DAMAGE.
   25  *
   26  * $FreeBSD$
   27  */
   28 
   29 int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
   30 int mixer_uninit(device_t dev);
   31 int mixer_reinit(device_t dev);
   32 int mixer_ioctl(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td);
   33 
   34 int mixer_hwvol_init(device_t dev);
   35 void mixer_hwvol_mute(device_t dev);
   36 void mixer_hwvol_step(device_t dev, int left_step, int right_step);
   37 
   38 void mix_setdevs(struct snd_mixer *m, u_int32_t v);
   39 void mix_setrecdevs(struct snd_mixer *m, u_int32_t v);
   40 u_int32_t mix_getdevs(struct snd_mixer *m);
   41 u_int32_t mix_getrecdevs(struct snd_mixer *m);
   42 void mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs);
   43 void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
   44 u_int32_t mix_getparent(struct snd_mixer *m, u_int32_t dev);
   45 u_int32_t mix_getchild(struct snd_mixer *m, u_int32_t dev);
   46 void *mix_getdevinfo(struct snd_mixer *m);
   47 
   48 /*
   49  * this is a kludge to allow hiding of the struct snd_mixer definition
   50  * 512 should be enough for all architectures
   51  */
   52 #define MIXER_SIZE      (512 + sizeof(struct kobj))
   53 
   54 #define MIXER_DECLARE(name) DEFINE_CLASS(name, name ## _methods, MIXER_SIZE)

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