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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1999-2000 by Sun Microsystems, Inc.
* All rights reserved
*/
#ifndef _SYS_MIXER_H
#define _SYS_MIXER_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <sys/audio.h>
#define MIXER_NAME "audio mixer" /* STREAMS module name */
#define MIXER_VERSION "Rev 1" /* 1st version of audio mixer */
#define MIXER_CONFIGURATION "Config A" /* 1st configuration */
#define MIXER_MOD_NAME "Audio Mixer" /* STREAMS modldrv name */
#define AM_MIXER_MODE 0
#define AM_COMPAT_MODE 1
#define AM_DEFAULT_SAMPLERATE 8000
#define AM_DEFAULT_CHANNELS AUDIO_CHANNELS_MONO
#define AM_DEFAULT_PRECISION AUDIO_PRECISION_8
#define AM_DEFAULT_ENCODING AUDIO_ENCODING_ULAW
#define AM_DEFAULT_GAIN AUDIO_MID_GAIN
/*
* Mixer ioctls.
*/
#define MIOC ('M'<<8)
#define AUDIO_MIXER_MULTIPLE_OPEN (MIOC|10)
#define AUDIO_MIXER_SINGLE_OPEN (MIOC|11)
#define AUDIO_MIXER_GET_SAMPLE_RATES (MIOC|12)
#define AUDIO_MIXERCTL_GETINFO (MIOC|13)
#define AUDIO_MIXERCTL_SETINFO (MIOC|14)
#define AUDIO_MIXERCTL_GET_CHINFO (MIOC|15)
#define AUDIO_MIXERCTL_SET_CHINFO (MIOC|16)
#define AUDIO_MIXERCTL_GET_MODE (MIOC|17)
#define AUDIO_MIXERCTL_SET_MODE (MIOC|18)
#define AUDIO_MIXER_CTL_STRUCT_SIZE(num_ch) (sizeof (am_control_t) + \
((num_ch - 1) * sizeof (int8_t)))
#define AUDIO_MIXER_SAMP_RATES_STRUCT_SIZE(num_srs) \
(sizeof (am_sample_rates_t) + \
((num_srs - 1) * sizeof (uint_t)))
/*
* Mixer software features
*/
#define AM_MIXER 0x00000001 /* audio mixer */
/*
* am_control_t - structure that holds information on the audio device
*/
struct am_control {
/*
* Because a particular channel may be virtual, it isn't possible
* to use the normal ioctl()s to set the some of the hardware's state.
* Only the dev_info structure's play/record gain, balance, port, and
* pause members, as well as the monitor_gain and output_muted members
* may be modified.
*/
audio_info_t dev_info;
/*
* The mixer(7I) manual page shows an example of using the ch_open[]
* array. Each element that is set to 0 represents a channel which
* isn't allocated, and non-zero elements represent a channel that is
* alloacted. This size of this array may change, depending on the
* number of channels the audiosup module allocates per device.
*/
int8_t ch_open[1];
};
typedef struct am_control am_control_t;
/*
* am_sample_rates_t - structure for a list of supported sample rates
*/
struct am_sample_rates {
/*
* Set this to AUIDO_PLAY or AUDIO_RECORD, but not both, to get
* the play or record sample rates, respectively.
*/
uint_t type;
/*
* Some devices support a complete range of sample rates between the
* two provided in the samp_rates[] array. If this is so then this
* flag is set to MIXER_SR_LIMITS when AUDIO_MIXER_GET_SAMPLE_RATES
* returns this structure.
*/
uint_t flags;
/*
* Set this number to the number of sample rates to request. The
* mixer(7I) manual page shows an example of using this structure.
* When AUDIO_MIXER_GET_SAMPLE_RATES returns the number of samples
* available is set. This may be more or less than the number requested.
* If more that only the requested number of samples is arctually
* returned in the samp_rates array.
*/
uint_t num_samp_rates;
/*
* Variable size array for the supported sample rates. See the example
* in the mixer(7I) manual page for how to use this array.
*/
uint_t samp_rates[1];
};
typedef struct am_sample_rates am_sample_rates_t;
/* am_sample_rates.flags defines */
#define MIXER_SR_LIMITS 0x00000001u /* sample rates set limits */
#ifdef __cplusplus
}
#endif
#endif /* _SYS_MIXER_H */
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