/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (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 2009 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ #ifndef _SYS_MIXER_H #define _SYS_MIXER_H #ifdef __cplusplus extern "C" { #endif #include <sys/audio.h> #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(4I) 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(4I) 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(4I) 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 */
