FreeBSD/Linux Kernel Cross Reference
sys/device/audio_status.h

     /* 
      * Mach Operating System
      * Copyright (c) 1993 Carnegie Mellon University
      * All Rights Reserved.
      * 
      * Permission to use, copy, modify and distribute this software and its
      * documentation is hereby granted, provided that both the copyright
      * notice and this permission notice appear in all copies of the
      * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     * 
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     * 
     * Carnegie Mellon requests users of this software to return to
     * 
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     * 
     * any improvements or extensions that they make and grant Carnegie Mellon
     * the rights to redistribute these changes.
     */
    /*
     * Copyright (c) 1991, 1992 The Regents of the University of California.
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by the Computer Systems
     *      Engineering Group at Lawrence Berkeley Laboratory.
     * 4. The name of the Laboratory may not be used to endorse or promote 
     *    products derived from this software without specific prior written 
     *    permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      $Header: audio_status.h,v 2.2 93/03/18 10:37:14 mrt Exp $ (LBL)
     */
    /*
     * HISTORY
     * $Log:        audio_status.h,v $
     * Revision 2.2  93/03/18  10:37:14  mrt
     *      Created from Berkeley driver.
     *      [93/03/12            af]
     * 
     */
    
    #ifndef _DEVICE_AUDIO_STATUS_H_
    #define _DEVICE_AUDIO_STATUS_H_
    
    /*
     *      Access to ADC devices, such as the AMD 79C30A/32A.
     */
    
    /*
     * Programmable gains, see tables in device drivers
     * for detailed mapping to device specifics.
     */
    #define AUDIO_MIN_GAIN (0)
    #define AUDIO_MAX_GAIN (255)
    
    /*
     * Encoding of audio samples
     */
    #define AUDIO_ENCODING_ULAW (1)
    #define AUDIO_ENCODING_ALAW (2)
    
    /*
     * Selection of input/output jack
     */
    #define AUDIO_MIKE              1
    
    #define AUDIO_SPEAKER           1
    #define AUDIO_HEADPHONE         2
    
    /*
     * Programming information from/to user application.
     * Only portions of this might be available on any given chip.
    */
   struct audio_prinfo {
           unsigned int    sample_rate;
           unsigned int    channels;
           unsigned int    precision;
           unsigned int    encoding;
           unsigned int    gain;
           unsigned int    port;           /* input/output jack */
           unsigned int    seek;           /* BSD extension */
           unsigned int    ispare[3];
           unsigned int    samples;
           unsigned int    eof;
   
           unsigned char   pause;
           unsigned char   error;
           unsigned char   waiting;
           unsigned char   cspare[3];
           unsigned char   open;
           unsigned char   active;
   
   };
   
   struct audio_info {
           struct  audio_prinfo play;
           struct  audio_prinfo record;
           unsigned int    monitor_gain;
           /* BSD extensions */
           unsigned int    blocksize;      /* input blocking threshold */
           unsigned int    hiwat;          /* output high water mark */
           unsigned int    lowat;          /* output low water mark */
           unsigned int    backlog;        /* samples of output backlog to gen. */
   };
   
   typedef struct audio_info audio_info_t;
   
   #define AUDIO_INITINFO(p)\
           (void)memset((void *)(p), 0xff, sizeof(struct audio_info))
   
   #define AUDIO_GETINFO   _IOR('A', 21, audio_info_t)
   #define AUDIO_SETINFO   _IOWR('A', 22, audio_info_t)
   #define AUDIO_DRAIN     _IO('A', 23)
   #define AUDIO_FLUSH     _IO('A', 24)
   #define AUDIO_WSEEK     _IOR('A', 25, unsigned int)
   #define AUDIO_RERROR    _IOR('A', 26, int)
   #define AUDIO_WERROR    _IOR('A', 27, int)
   
   /*
    * Low level interface to the amd79c30.
    * Internal registers of the MAP block,
    * the Main Audio Processor.
    */
   struct mapreg {
           unsigned short  mr_x[8];
           unsigned short  mr_r[8];
           unsigned short  mr_gx;
           unsigned short  mr_gr;
           unsigned short  mr_ger;
           unsigned short  mr_stgr;
           unsigned short  mr_ftgr;
           unsigned short  mr_atgr;
           unsigned char   mr_mmr1;
           unsigned char   mr_mmr2;
   };
   
   #define AUDIO_GETMAP    _IOR('A', 27, struct mapreg)
   #define AUDIO_SETMAP    _IOW('A', 28, struct mapreg)
   
   /*
    * Compatibility with Sun interface
    */
   struct  audio_ioctl {
           short   control;
           unsigned char   data[46];
   };
   
   #define AUDIOGETREG             _IOWR('i',1,struct audio_ioctl)
   #define AUDIOSETREG             _IOW('i',2,struct audio_ioctl)
   
   #endif /* _DEVICE_AUDIO_STATUS_H_ */

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