/* $OpenBSD: audio_if.h,v 1.12 2001/10/01 06:09:24 jason Exp $ */ /* $NetBSD: audio_if.h,v 1.24 1998/01/10 14:07:25 tv 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_ /* * Generic interface to hardware driver. */ struct audio_softc; struct audio_params { u_long sample_rate; /* sample rate */ u_int encoding; /* e.g. ulaw, 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)__P((void *, u_char *, int)); int factor; /* coding space change */ }; /* The default audio mode: 8 kHz mono ulaw */ extern struct audio_params audio_default; struct audio_hw_if { int (*open)__P((void *, int)); /* open hardware */ void (*close)__P((void *)); /* close hardware */ int (*drain)__P((void *)); /* Optional: drain buffers */ /* Encoding. */ /* XXX should we have separate in/out? */ int (*query_encoding)__P((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)__P((void *, int, int, struct audio_params *, struct audio_params *)); /* Hardware may have some say in the blocksize to choose */ int (*round_blocksize)__P((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)__P((void *)); /* Start input/output routines. These usually control DMA. */ int (*init_output)__P((void *, void *, int)); int (*init_input)__P((void *, void *, int)); 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 (*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 *)); /* Allocate/free memory for the ring buffer. Usually malloc/free. */ /* The _old interfaces have been deprecated and will not be called in newer kernels if the new interfaces are present */ void *(*allocm_old)__P((void *, unsigned long, int, int)); void (*freem)__P((void *, void *, int)); unsigned long (*round_buffersize_old)__P((void *, unsigned long)); int (*mappage)__P((void *, void *, int, int)); int (*get_props)__P((void *)); /* device properties */ int (*trigger_output)__P((void *, void *, void *, int, void (*)(void *), void *, struct audio_params *)); int (*trigger_input)__P((void *, void *, void *, int, void (*)(void *), void *, struct audio_params *)); void *(*allocm)__P((void *, int, size_t, int, int)); size_t (*round_buffersize)__P((void *, int, size_t)); }; struct audio_attach_args { int type; 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 /* Attach the MI driver(s) to the MD driver. */ struct device *audio_attach_mi __P((struct audio_hw_if *, void *, struct device *)); int audioprint __P((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(__sparc64__) #define splaudio splbio /* XXX */ #define IPL_AUDIO IPL_BIO /* XXX */ #endif #endif /* _SYS_DEV_AUDIO_IF_H_ */