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) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
    3  * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
    4  * All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  *
   15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   16  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   18  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   21  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   25  * SUCH DAMAGE.
   26  *
   27  * $FreeBSD: releng/11.2/sys/dev/sound/pcm/mixer.h 331722 2018-03-29 02:50:57Z eadler $
   28  */
   29 
   30 #ifndef _PCM_MIXER_H_
   31 #define _PCM_MIXER_H_
   32 
   33 struct snd_mixer *mixer_create(device_t dev, kobj_class_t cls, void *devinfo,
   34     const char *desc);
   35 int mixer_delete(struct snd_mixer *m);
   36 int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
   37 int mixer_uninit(device_t dev);
   38 int mixer_reinit(device_t dev);
   39 int mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td, int from);
   40 int mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi);
   41 
   42 int mixer_hwvol_init(device_t dev);
   43 void mixer_hwvol_mute_locked(struct snd_mixer *m);
   44 void mixer_hwvol_mute(device_t dev);
   45 void mixer_hwvol_step_locked(struct snd_mixer *m, int l_step, int r_step);
   46 void mixer_hwvol_step(device_t dev, int left_step, int right_step);
   47 
   48 int mixer_busy(struct snd_mixer *m);
   49 
   50 int mix_get_locked(struct snd_mixer *m, u_int dev, int *pleft, int *pright);
   51 int mix_set_locked(struct snd_mixer *m, u_int dev, int left, int right);
   52 int mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right);
   53 int mix_get(struct snd_mixer *m, u_int dev);
   54 int mix_setrecsrc(struct snd_mixer *m, u_int32_t src);
   55 u_int32_t mix_getrecsrc(struct snd_mixer *m);
   56 int mix_get_type(struct snd_mixer *m);
   57 
   58 void mix_setdevs(struct snd_mixer *m, u_int32_t v);
   59 void mix_setrecdevs(struct snd_mixer *m, u_int32_t v);
   60 u_int32_t mix_getdevs(struct snd_mixer *m);
   61 u_int32_t mix_getrecdevs(struct snd_mixer *m);
   62 void mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs);
   63 void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
   64 u_int32_t mix_getparent(struct snd_mixer *m, u_int32_t dev);
   65 u_int32_t mix_getchild(struct snd_mixer *m, u_int32_t dev);
   66 void *mix_getdevinfo(struct snd_mixer *m);
   67 struct mtx *mixer_get_lock(struct snd_mixer *m);
   68 
   69 extern int mixer_count;
   70 
   71 #define MIXER_CMD_DIRECT        0       /* send command within driver   */
   72 #define MIXER_CMD_CDEV          1       /* send command from cdev/ioctl */
   73 
   74 #define MIXER_TYPE_PRIMARY      0       /* mixer_init()   */
   75 #define MIXER_TYPE_SECONDARY    1       /* mixer_create() */
   76 
   77 /*
   78  * this is a kludge to allow hiding of the struct snd_mixer definition
   79  * 512 should be enough for all architectures
   80  */
   81 #define MIXER_SIZE      (512 + sizeof(struct kobj) +            \
   82                             sizeof(oss_mixer_enuminfo))
   83 
   84 #define MIXER_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, MIXER_SIZE)
   85 
   86 #endif                          /* _PCM_MIXER_H_ */

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