/* $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_ */