mixer.h revision 119853
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: head/sys/dev/sound/pcm/mixer.h 119853 2003-09-07 16:28:03Z cg $ 27 */ 28 29int mixer_init(device_t dev, kobj_class_t cls, void *devinfo); 30int mixer_uninit(device_t dev); 31int mixer_reinit(device_t dev); 32int mixer_ioctl(dev_t i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td); 33 34int mixer_hwvol_init(device_t dev); 35void mixer_hwvol_mute(device_t dev); 36void mixer_hwvol_step(device_t dev, int left_step, int right_step); 37 38void mix_setdevs(struct snd_mixer *m, u_int32_t v); 39void mix_setrecdevs(struct snd_mixer *m, u_int32_t v); 40u_int32_t mix_getdevs(struct snd_mixer *m); 41u_int32_t mix_getrecdevs(struct snd_mixer *m); 42void *mix_getdevinfo(struct snd_mixer *m); 43 44/* 45 * this is a kludge to allow hiding of the struct snd_mixer definition 46 * 512 should be enough for all architectures 47 */ 48#define MIXER_SIZE (512 + sizeof(struct kobj)) 49 50#define MIXER_DECLARE(name) DEFINE_CLASS(name, name ## _methods, MIXER_SIZE) 51