195 lines
6.6 KiB
C
195 lines
6.6 KiB
C
/* $NetBSD: audio_if.h,v 1.54 2004/10/29 12:57:16 yamt 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef _SYS_DEV_AUDIO_IF_H_
|
|
#define _SYS_DEV_AUDIO_IF_H_
|
|
|
|
/* check we have an audio(4) configured into kernel */
|
|
#if defined(_KERNEL_OPT)
|
|
#include "audio.h"
|
|
|
|
#if (NAUDIO == 0) && (NMIDI == 0) && (NMIDIBUS == 0)
|
|
#error "No 'audio* at audiobus?' or 'midi* at midibus?' or similar configured"
|
|
#endif
|
|
|
|
#endif /* _KERNEL_OPT */
|
|
|
|
/*
|
|
* Generic interface to hardware driver.
|
|
*/
|
|
|
|
struct audio_softc;
|
|
|
|
struct audio_params {
|
|
u_long sample_rate; /* sample rate */
|
|
u_int encoding; /* e.g. mu-law, linear, etc */
|
|
u_int precision; /* bits/sample */
|
|
u_int channels; /* mono(1), stereo(2) */
|
|
/* Software en/decode functions, set if SW coding required by HW */
|
|
void (*sw_code)(void *, u_char *, int);
|
|
int factor; /* coding space change */
|
|
int factor_denom; /* denominator of factor */
|
|
/*
|
|
* The following four members represent what format is used in a
|
|
* hardware. If hw_sample_rate != sample_rate || hw_channels !=
|
|
* channels, the audio framework converts data. Encoding and
|
|
* precision are converted in sw_code().
|
|
* set_params() should set correct values to them if no conversion is
|
|
* needed.
|
|
*/
|
|
u_long hw_sample_rate;
|
|
u_int hw_encoding;
|
|
u_int hw_precision;
|
|
u_int hw_channels;
|
|
};
|
|
|
|
/* The default audio mode: 8 kHz mono mu-law */
|
|
extern const struct audio_params audio_default;
|
|
|
|
struct malloc_type;
|
|
struct audio_hw_if {
|
|
int (*open)(void *, int); /* open hardware */
|
|
void (*close)(void *); /* close hardware */
|
|
int (*drain)(void *); /* Optional: drain buffers */
|
|
|
|
/* Encoding. */
|
|
/* XXX should we have separate in/out? */
|
|
int (*query_encoding)(void *, struct audio_encoding *);
|
|
|
|
/* Set the audio encoding parameters (record and play).
|
|
* Return 0 on success, or an error code if the
|
|
* requested parameters are impossible.
|
|
* The values in the params struct may be changed (e.g. rounding
|
|
* to the nearest sample rate.)
|
|
*/
|
|
int (*set_params)(void *, int, int, struct audio_params *,
|
|
struct audio_params *);
|
|
|
|
/* Hardware may have some say in the blocksize to choose */
|
|
int (*round_blocksize)(void *, int);
|
|
|
|
/*
|
|
* 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)(void *);
|
|
|
|
/* Start input/output routines. These usually control DMA. */
|
|
int (*init_output)(void *, void *, int);
|
|
int (*init_input)(void *, void *, int);
|
|
int (*start_output)(void *, void *, int,
|
|
void (*)(void *), void *);
|
|
int (*start_input)(void *, void *, int,
|
|
void (*)(void *), void *);
|
|
int (*halt_output)(void *);
|
|
int (*halt_input)(void *);
|
|
|
|
int (*speaker_ctl)(void *, int);
|
|
#define SPKR_ON 1
|
|
#define SPKR_OFF 0
|
|
|
|
int (*getdev)(void *, struct audio_device *);
|
|
int (*setfd)(void *, int);
|
|
|
|
/* Mixer (in/out ports) */
|
|
int (*set_port)(void *, mixer_ctrl_t *);
|
|
int (*get_port)(void *, mixer_ctrl_t *);
|
|
|
|
int (*query_devinfo)(void *, mixer_devinfo_t *);
|
|
|
|
/* Allocate/free memory for the ring buffer. Usually malloc/free. */
|
|
void *(*allocm)(void *, int, size_t, struct malloc_type *, int);
|
|
void (*freem)(void *, void *, struct malloc_type *);
|
|
size_t (*round_buffersize)(void *, int, size_t);
|
|
paddr_t (*mappage)(void *, void *, off_t, int);
|
|
|
|
int (*get_props)(void *); /* device properties */
|
|
|
|
int (*trigger_output)(void *, void *, void *, int,
|
|
void (*)(void *), void *, struct audio_params *);
|
|
int (*trigger_input)(void *, void *, void *, int,
|
|
void (*)(void *), void *, struct audio_params *);
|
|
int (*dev_ioctl)(void *, u_long, caddr_t, int, struct proc *);
|
|
};
|
|
|
|
struct audio_attach_args {
|
|
int type;
|
|
const void *hwif; /* either audio_hw_if * or midi_hw_if * */
|
|
void *hdl;
|
|
};
|
|
#define AUDIODEV_TYPE_AUDIO 0
|
|
#define AUDIODEV_TYPE_MIDI 1
|
|
#define AUDIODEV_TYPE_OPL 2
|
|
#define AUDIODEV_TYPE_MPU 3
|
|
#define AUDIODEV_TYPE_AUX 4
|
|
|
|
/* Attach the MI driver(s) to the MD driver. */
|
|
struct device *audio_attach_mi(const struct audio_hw_if *, void *,
|
|
struct device *);
|
|
int audioprint(void *, const char *);
|
|
|
|
/* Device identity flags */
|
|
#define SOUND_DEVICE 0
|
|
#define AUDIO_DEVICE 0x80
|
|
#define AUDIOCTL_DEVICE 0xc0
|
|
#define MIXER_DEVICE 0x10
|
|
|
|
#define AUDIOUNIT(x) (minor(x)&0x0f)
|
|
#define AUDIODEV(x) (minor(x)&0xf0)
|
|
|
|
#define ISDEVSOUND(x) (AUDIODEV((x)) == SOUND_DEVICE)
|
|
#define ISDEVAUDIO(x) (AUDIODEV((x)) == AUDIO_DEVICE)
|
|
#define ISDEVAUDIOCTL(x) (AUDIODEV((x)) == AUDIOCTL_DEVICE)
|
|
#define ISDEVMIXER(x) (AUDIODEV((x)) == MIXER_DEVICE)
|
|
|
|
#if !defined(__i386__) && !defined(__arm32__) && !defined(IPL_AUDIO)
|
|
#define splaudio splbio /* XXX */
|
|
#define IPL_AUDIO IPL_BIO /* XXX */
|
|
#endif
|
|
|
|
/*
|
|
* USB Audio specification defines 12 channels:
|
|
* L R C LFE Ls Rs Lc Rc S Sl Sr T
|
|
*/
|
|
#define AUDIO_MAX_CHANNELS 12
|
|
|
|
#endif /* _SYS_DEV_AUDIO_IF_H_ */
|
|
|