0f8dafb458
These two ioctls are not part of the current version of OSS and were considered obsolete. However, their behaviour is not the same as their old one, so this implementation is specific to FreeBSD. Older OSS versions had the MUTE ioctls take and return an integer with a value of 0 or 1, which meant that the _whole_ mixer is unmuted or muted respectively. In my implementation, the ioctl takes and returns a bitmask that tells us which devices are muted. This allows us to mute and unmute only the devices we want, instead of the whole mixer. The bitmask works the same way as in DEVMASK, RECMASK and RECSRC. Integrated the hardware volume feature with the new mute system. Submitted by: Christos Margiolis <christos@freebsd.org> Differential Revision: https://reviews.freebsd.org/D31130 MFC after: 1 week Sponsored by: NVIDIA Networking
92 lines
3.9 KiB
C
92 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
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* Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _PCM_MIXER_H_
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#define _PCM_MIXER_H_
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struct snd_mixer *mixer_create(device_t dev, kobj_class_t cls, void *devinfo,
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const char *desc);
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int mixer_delete(struct snd_mixer *m);
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int mixer_init(device_t dev, kobj_class_t cls, void *devinfo);
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int mixer_uninit(device_t dev);
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int mixer_reinit(device_t dev);
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int mixer_ioctl_cmd(struct cdev *i_dev, u_long cmd, caddr_t arg, int mode, struct thread *td, int from);
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int mixer_oss_mixerinfo(struct cdev *i_dev, oss_mixerinfo *mi);
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int mixer_hwvol_init(device_t dev);
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void mixer_hwvol_mute_locked(struct snd_mixer *m);
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void mixer_hwvol_mute(device_t dev);
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void mixer_hwvol_step_locked(struct snd_mixer *m, int l_step, int r_step);
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void mixer_hwvol_step(device_t dev, int left_step, int right_step);
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int mixer_busy(struct snd_mixer *m);
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int mix_get_locked(struct snd_mixer *m, u_int dev, int *pleft, int *pright);
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int mix_set_locked(struct snd_mixer *m, u_int dev, int left, int right);
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int mix_set(struct snd_mixer *m, u_int dev, u_int left, u_int right);
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int mix_get(struct snd_mixer *m, u_int dev);
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int mix_setrecsrc(struct snd_mixer *m, u_int32_t src);
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u_int32_t mix_getrecsrc(struct snd_mixer *m);
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int mix_get_type(struct snd_mixer *m);
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device_t mix_get_dev(struct snd_mixer *m);
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void mix_setdevs(struct snd_mixer *m, u_int32_t v);
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void mix_setrecdevs(struct snd_mixer *m, u_int32_t v);
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void mix_setmutedevs(struct snd_mixer *m, u_int32_t v);
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u_int32_t mix_getdevs(struct snd_mixer *m);
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u_int32_t mix_getrecdevs(struct snd_mixer *m);
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u_int32_t mix_getmutedevs(struct snd_mixer *m);
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void mix_setparentchild(struct snd_mixer *m, u_int32_t parent, u_int32_t childs);
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void mix_setrealdev(struct snd_mixer *m, u_int32_t dev, u_int32_t realdev);
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u_int32_t mix_getparent(struct snd_mixer *m, u_int32_t dev);
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u_int32_t mix_getchild(struct snd_mixer *m, u_int32_t dev);
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void *mix_getdevinfo(struct snd_mixer *m);
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struct mtx *mixer_get_lock(struct snd_mixer *m);
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extern int mixer_count;
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#define MIXER_CMD_DIRECT 0 /* send command within driver */
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#define MIXER_CMD_CDEV 1 /* send command from cdev/ioctl */
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#define MIXER_TYPE_PRIMARY 0 /* mixer_init() */
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#define MIXER_TYPE_SECONDARY 1 /* mixer_create() */
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/*
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* this is a kludge to allow hiding of the struct snd_mixer definition
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* 512 should be enough for all architectures
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*/
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#define MIXER_SIZE (512 + sizeof(struct kobj) + \
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sizeof(oss_mixer_enuminfo))
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#define MIXER_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, MIXER_SIZE)
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#endif /* _PCM_MIXER_H_ */
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