NetBSD/sys/dev/audiovar.h

227 lines
8.2 KiB
C

/* $NetBSD: audiovar.h,v 1.28 2003/05/03 18:11:09 wiz Exp $ */
/*-
* Copyright (c) 2002 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by TAMURA Kent
*
* 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 NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/*
* Copyright (c) 1991-1993 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. 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.
*
* From: Header: audiovar.h,v 1.3 93/07/18 14:07:25 mccanne Exp (LBL)
*/
#ifndef _SYS_DEV_AUDIOVAR_H_
#define _SYS_DEV_AUDIOVAR_H_
#include "aurateconv.h" /* generated by config(8) */
/*
* Initial/default block duration is both configurable and patchable.
*/
#ifndef AUDIO_BLK_MS
#define AUDIO_BLK_MS 50 /* 50 ms */
#endif
#ifndef AU_RING_SIZE
#define AU_RING_SIZE 65536
#endif
#define AUMINBUF 512
#define AUMINBLK 32
#define AUMINNOBLK 3
struct audio_ringbuffer {
size_t bufsize; /* allocated memory */
int blksize; /* I/O block size */
int maxblks; /* no of blocks in ring */
u_char *start; /* start of buffer area */
u_char *end; /* end of buffer area */
u_char *inp; /* input pointer (to buffer) */
u_char *outp; /* output pointer (from buffer) */
int used; /* no of used bytes */
int usedlow; /* start writer when used falls below this */
int usedhigh; /* stop writer when used goes above this */
u_long stamp; /* bytes transferred */
u_long stamp_last; /* old value of bytes transferred */
u_long drops; /* missed samples from over/underrun */
u_long pdrops; /* paused samples */
char pause; /* transfer is paused */
char copying; /* data is being copied */
char needfill; /* buffer needs filling when copying is done */
char mmapped; /* device is mmap()-ed */
};
#define AUDIO_N_PORTS 4
struct au_mixer_ports {
int index;
int master;
int nports;
u_char isenum;
u_int allports;
u_int aumask[AUDIO_N_PORTS];
u_int misel [AUDIO_N_PORTS];
u_int miport[AUDIO_N_PORTS];
};
#if NAURATECONV > 0
struct auconv_context {
long count;
int32_t prev[AUDIO_MAX_CHANNELS];
uint8_t *ring_start;
uint8_t *ring_end;
};
#endif
/*
* Software state, per audio device.
*/
struct audio_softc {
struct device dev;
void *hw_hdl; /* Hardware driver handle */
struct audio_hw_if *hw_if; /* Hardware interface */
struct device *sc_dev; /* Hardware device struct */
u_char sc_open; /* single use device */
#define AUOPEN_READ 0x01
#define AUOPEN_WRITE 0x02
u_char sc_mode; /* bitmask for RECORD/PLAY */
struct selinfo sc_wsel; /* write selector */
struct selinfo sc_rsel; /* read selector */
struct proc *sc_async_audio; /* process who wants audio SIGIO */
struct mixer_asyncs {
struct mixer_asyncs *next;
struct proc *proc;
} *sc_async_mixer; /* processes who want mixer SIGIO */
/* Sleep channels for reading and writing. */
int sc_rchan;
int sc_wchan;
/* Ring buffers, separate for record and play. */
struct audio_ringbuffer sc_rr; /* Record ring */
struct audio_ringbuffer sc_pr; /* Play ring */
#define MAX_SAMPLE_SIZE (AUDIO_MAX_CHANNELS * 24 / 8) /* 6channels x 24bit precision */
int sc_input_fragment_length;
u_char sc_input_fragment[MAX_SAMPLE_SIZE];
int sc_pconvbuffer_size;
u_char *sc_pconvbuffer;
#if NAURATECONV > 0
struct auconv_context sc_pconv;
#endif
int sc_rconvbuffer_size;
int sc_rconvbuffer_begin;
int sc_rconvbuffer_end;
u_char *sc_rconvbuffer;
#if NAURATECONV > 0
struct auconv_context sc_rconv;
#endif
u_char sc_blkset; /* Blocksize has been set */
u_char *sc_sil_start; /* start of silence in buffer */
int sc_sil_count; /* # of silence bytes */
u_char sc_rbus; /* input DMA in progress */
u_char sc_pbus; /* output DMA in progress */
struct audio_params sc_pparams; /* play encoding parameters */
struct audio_params sc_rparams; /* record encoding parameters */
int sc_eof; /* EOF, i.e. zero sized write, counter */
u_long sc_wstamp;
u_long sc_playdrop;
int sc_full_duplex; /* device in full duplex mode */
struct au_mixer_ports sc_inports, sc_outports;
int sc_monitor_port;
int sc_refcnt;
u_char sc_dying;
#ifdef AUDIO_INTR_TIME
u_long sc_pfirstintr; /* first time we saw a play interrupt */
int sc_pnintr; /* number of interrupts */
u_long sc_plastintr; /* last time we saw a play interrupt */
long sc_pblktime; /* nominal time between interrupts */
u_long sc_rfirstintr; /* first time we saw a rec interrupt */
int sc_rnintr; /* number of interrupts */
u_long sc_rlastintr; /* last time we saw a rec interrupt */
long sc_rblktime; /* nominal time between interrupts */
#endif
};
extern int auconv_check_params(const struct audio_params *);
#if NAURATECONV > 0
extern void auconv_init_context(struct auconv_context *, long, long, uint8_t *,
uint8_t *);
extern int auconv_play(struct auconv_context *, const struct audio_params *,
uint8_t *, const uint8_t *, int);
extern int auconv_record(struct auconv_context *, const struct audio_params *,
uint8_t *, const uint8_t *, int);
#endif /* NAURATECONV */
#endif /* _SYS_DEV_AUDIOVAR_H_ */