136 lines
4.8 KiB
C
136 lines
4.8 KiB
C
/* $NetBSD: audio_if.h,v 1.10 1997/03/21 04:36:29 mycroft Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994 Havard Eidnes.
|
|
* 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. Neither the name of the University nor of the Laboratory may 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.
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* Generic interface to hardware driver.
|
|
*/
|
|
|
|
struct audio_softc;
|
|
|
|
struct audio_hw_if {
|
|
int (*open)__P((dev_t, int)); /* open hardware */
|
|
void (*close)__P((void *)); /* close hardware */
|
|
int (*drain)__P((void *)); /* Optional: drain buffers */
|
|
|
|
/* Sample rate */
|
|
int (*set_in_sr)__P((void *, u_long));
|
|
u_long (*get_in_sr)__P((void *));
|
|
int (*set_out_sr)__P((void *, u_long));
|
|
u_long (*get_out_sr)__P((void *));
|
|
|
|
/* Encoding. */
|
|
/* Precision = bits/sample, usually 8 or 16 */
|
|
/* XXX should we have separate in/out? */
|
|
int (*query_encoding)__P((void *, struct audio_encoding *));
|
|
int (*set_format)__P((void *, u_int, u_int));
|
|
int (*get_encoding)__P((void *));
|
|
int (*get_precision)__P((void *));
|
|
|
|
/* Channels - mono(1), stereo(2) */
|
|
int (*set_channels)__P((void *, int));
|
|
int (*get_channels)__P((void *));
|
|
|
|
/* Hardware may have some say in the blocksize to choose */
|
|
int (*round_blocksize)__P((void *, int));
|
|
|
|
/* Ports (in/out ports) */
|
|
int (*set_out_port)__P((void *, int));
|
|
int (*get_out_port)__P((void *));
|
|
int (*set_in_port)__P((void *, int));
|
|
int (*get_in_port)__P((void *));
|
|
|
|
/*
|
|
* Changing settings may require taking device out of "data mode",
|
|
* which can be quite expensive. Also, audiosetinfo() may
|
|
* change several settings in quick succession. To avoid
|
|
* having to take the device in/out of "data mode", we provide
|
|
* this function which indicates completion of settings
|
|
* adjustment.
|
|
*/
|
|
int (*commit_settings)__P((void *));
|
|
|
|
/* Software en/decode functions, set if SW coding required by HW */
|
|
void (*sw_encode)__P((void *, int, u_char *, int));
|
|
void (*sw_decode)__P((void *, int, u_char *, int));
|
|
|
|
/* Start input/output routines. These usually control DMA. */
|
|
int (*start_output)__P((void *, void *, int,
|
|
void (*)(void *), void *));
|
|
int (*start_input)__P((void *, void *, int,
|
|
void (*)(void *), void *));
|
|
int (*halt_output)__P((void *));
|
|
int (*halt_input)__P((void *));
|
|
int (*cont_output)__P((void *));
|
|
int (*cont_input)__P((void *));
|
|
|
|
int (*speaker_ctl)__P((void *, int));
|
|
#define SPKR_ON 1
|
|
#define SPKR_OFF 0
|
|
|
|
int (*getdev)__P((void *, struct audio_device *));
|
|
int (*setfd)__P((void *, int));
|
|
|
|
/* Mixer (in/out ports) */
|
|
int (*set_port)__P((void *, mixer_ctrl_t *));
|
|
int (*get_port)__P((void *, mixer_ctrl_t *));
|
|
|
|
int (*query_devinfo)__P((void *, mixer_devinfo_t *));
|
|
|
|
int full_duplex; /* non-null if HW is able to do full-duplex */
|
|
int audio_unit;
|
|
};
|
|
|
|
/* Register / deregister hardware driver */
|
|
extern int audio_hardware_attach __P((struct audio_hw_if *, void *));
|
|
extern int audio_hardware_detach __P((struct audio_hw_if *));
|
|
|
|
/* Device identity flags */
|
|
#define SOUND_DEVICE 0
|
|
#define AUDIO_DEVICE 0x80
|
|
#define MIXER_DEVICE 0x10
|
|
|
|
#define ISDEVAUDIO(x) ((minor(x)&0xf0) == AUDIO_DEVICE)
|
|
#define ISDEVSOUND(x) ((minor(x)&0xf0) == SOUND_DEVICE)
|
|
#define ISDEVMIXER(x) ((minor(x)&0xf0) == MIXER_DEVICE)
|
|
|
|
#define AUDIOUNIT(x) (minor(x)&0x0f)
|
|
#define AUDIODEV(x) (minor(x)&0xf0)
|
|
|
|
#ifndef __i386__
|
|
#define splaudio splbio /* XXX */
|
|
#define IPL_AUDIO IPL_BIO /* XXX */
|
|
#endif
|