include/sys/audio.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright (c) 1999-2001 by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 #ifndef _SYS_AUDIO_H
  28 #define _SYS_AUDIO_H
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifdef  __cplusplus
  33 extern "C" {
  34 #endif
  35
  36 #include <sys/types.h>
  37 #include <sys/audioio.h>
  38
  39 #define AUDIO_NAME              "audio support" /* STREAMS module name */
  40 #define AUDIO_VERSION           "Rev 1"         /* 1st version of audio arch. */
  41 #define AUDIO_CONFIGURATION     "Config A"      /* 1st configuration */
  42 #define AUDIO_MOD_NAME          "Audio Device Support"
  43                                                 /* STREAMS modldrv name */
  44
  45 #define AUDIO_PLAY                      0x0001          /* output */
  46 #define AUDIO_RECORD                    0x0002          /* input */
  47 #define AUDIO_BOTH                      (AUDIO_PLAY|AUDIO_RECORD)
  48 #define AUDIO_NO_SLEEP                  0x0004
  49 #define AUDIO_SLEEP                     0x0008
  50
  51
  52 #define AUDIO_INIT(I, S) {                                              \
  53                 uint8_t *__x__;                                         \
  54                 for (__x__ = (uint8_t *)(I);                            \
  55                         __x__ < (((uint8_t *)(I)) + (S));               \
  56                                 *__x__++ = (uint8_t)~0);                \
  57                 }
  58
  59 /*
  60  * Audio support ioctls.
  61  */
  62 #define AIOC                            ('A'<<8)
  63 #define AUDIO_GET_CH_NUMBER             (AIOC|10)
  64 #define AUDIO_GET_CH_TYPE               (AIOC|11)
  65 #define AUDIO_GET_NUM_CHS               (AIOC|12)
  66 #define AUDIO_GET_AD_DEV                (AIOC|13)
  67 #define AUDIO_GET_APM_DEV               (AIOC|14)
  68 #define AUDIO_GET_AS_DEV                (AIOC|15)
  69
  70 /*
  71  * audio_device_type_e  - type of audio device the channel is associated with.
  72  */
  73 enum audio_device_type {
  74         UNDEFINED = 0, AUDIO = 1, AUDIOCTL = 2, WTABLE = 3, MIDI = 4,
  75         ATIME = 5, USER1 = 9, USER2 = 10, USER3 = 11
  76 };
  77 typedef enum audio_device_type audio_device_type_e;
  78
  79 /*
  80  * audio_channel_t      - structure holds info on individual channels
  81  */
  82 struct audio_channel {
  83         /*
  84          * Process ID of the process that has this channel open. If this is
  85          * set to 0 then the channel isn't owned by any process and is free.
  86          */
  87         pid_t                   pid;
  88
  89         /*
  90          * When a channel is opened it is a given a new minor number, we always
  91          * clone the device. The ch_number is directly related to that new
  92          * minor number. Each open gets a unique channel number.
  93          */
  94         uint_t                  ch_number;
  95
  96         /*
  97          * Type of audio device opened. This cloned channel retains that
  98          * type, which determines which Audio Personality Module to use.
  99          */
 100         audio_device_type_e     dev_type;
 101
 102         /*
 103          * Each device type has a state structure which describes the hardware.
 104          * Because each state structure is different we need to know the size
 105          * for apps to allocate the correct space.
 106          */
 107         size_t                  info_size;
 108
 109         /*
 110          * The device type's state structure.
 111          */
 112         void                    *info;
 113 };
 114 typedef struct audio_channel audio_channel_t;
 115
 116 #ifdef  __cplusplus
 117 }
 118 #endif
 119
 120 #endif  /* _SYS_AUDIO_H */