mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
77 lines
2.9 KiB
C
77 lines
2.9 KiB
C
/*-
|
|
* Copyright (c) 1994 Søren Schmidt
|
|
* 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
|
|
* in this position and unchanged.
|
|
* 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. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
* $Id: pcaudioio.h,v 1.4 1995/05/30 08:00:44 rgrimes Exp $
|
|
*/
|
|
|
|
#ifndef _PCAUDIOIO_H_
|
|
#define _PCAUDIOIO_H_
|
|
|
|
typedef struct audio_prinfo {
|
|
unsigned sample_rate; /* samples per second */
|
|
unsigned channels; /* # of channels (interleaved) */
|
|
unsigned precision; /* sample size in bits */
|
|
unsigned encoding; /* encoding method used */
|
|
|
|
unsigned gain; /* volume level: 0 - 255 */
|
|
unsigned port; /* input/output device */
|
|
unsigned _fill1[4];
|
|
|
|
unsigned samples; /* samples played */
|
|
unsigned eof; /* ?!? */
|
|
unsigned char pause; /* !=0 pause, ==0 continue */
|
|
unsigned char error; /* !=0 if overflow/underflow */
|
|
unsigned char waiting; /* !=0 if others wants access */
|
|
unsigned char _fill2[3];
|
|
|
|
unsigned char open; /* is device open */
|
|
unsigned char active; /* !=0 if sound hardware is active */
|
|
} audio_prinfo_t;
|
|
|
|
typedef struct audio_info {
|
|
audio_prinfo_t play;
|
|
audio_prinfo_t record;
|
|
unsigned monitor_gain;
|
|
unsigned _fill[4];
|
|
} audio_info_t;
|
|
|
|
#define AUDIO_ENCODING_ULAW (1) /* u-law encoding */
|
|
#define AUDIO_ENCODING_ALAW (2) /* A-law encoding */
|
|
#define AUDIO_ENCODING_RAW (3) /* linear encoding */
|
|
|
|
#define AUDIO_MIN_GAIN (0) /* minimum volume value */
|
|
#define AUDIO_MAX_GAIN (255) /* maximum volume value */
|
|
|
|
#define AUDIO_INITINFO(i) memset((void*)i, 0xff, sizeof(audio_info_t))
|
|
|
|
#define AUDIO_GETINFO _IOR('A', 1, audio_info_t)
|
|
#define AUDIO_SETINFO _IOWR('A', 2, audio_info_t)
|
|
#define AUDIO_DRAIN _IO('A', 3)
|
|
#define AUDIO_FLUSH _IO('A', 4)
|
|
|
|
#endif /*!_PCAUDIOIO_H*/
|