/* $NetBSD: audiovar.h,v 1.39 2007/02/21 22:59:58 thorpej 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 /* * 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 { audio_stream_t s; int blksize; /* I/O block size (bytes) */ int maxblks; /* no of blocks in ring */ 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 fstamp; /* bytes transferred from/to the buffer near to userland */ u_long drops; /* missed samples from over/underrun */ u_long pdrops; /* paused samples */ bool pause; /* transfer is paused */ bool copying; /* data is being copied */ bool needfill; /* buffer needs filling when copying is done */ bool mmapped; /* device is mmap()-ed */ }; #define AUDIO_N_PORTS 4 struct au_mixer_ports { int index; /* index of port-selector mixerctl */ int master; /* index of master mixerctl */ int nports; /* number of selectable ports */ bool isenum; /* selector is enum type */ u_int allports; /* all aumasks or'd */ u_int aumask[AUDIO_N_PORTS]; /* exposed value of "ports" */ u_int misel [AUDIO_N_PORTS]; /* ord of port, for selector */ u_int miport[AUDIO_N_PORTS]; /* index of port's mixerctl */ bool isdual; /* has working mixerout */ int mixerout; /* ord of mixerout, for dual case */ int cur_port; /* the port that gain actually controls when mixerout is selected, for dual case */ }; /* * Software state, per audio device. */ struct audio_softc { struct device dev; void *hw_hdl; /* Hardware driver handle */ const 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 */ void *sc_sih_rd; void *sc_sih_wr; 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; bool sc_blkset; /* Blocksize has been set */ uint8_t *sc_sil_start; /* start of silence in buffer */ int sc_sil_count; /* # of silence bytes */ bool sc_rbus; /* input DMA in progress */ bool sc_pbus; /* output DMA in progress */ /** * userland * | write(2) & uiomove(9) * sc_pstreams[0] == sc_pustream; * | sc_pfilters[0] * sc_pstreams[1] * : * sc_pstreams[n-1] * | sc_pfilters[n-1] * sc_pr * | * hardware */ audio_params_t sc_pparams; /* play encoding parameters */ audio_stream_t *sc_pustream; /* the first buffer */ int sc_npfilters; /* number of filters */ audio_stream_t sc_pstreams[AUDIO_MAX_FILTERS]; stream_filter_t *sc_pfilters[AUDIO_MAX_FILTERS]; struct audio_ringbuffer sc_pr; /* Play ring */ int sc_writing; int sc_waitcomp; int sc_changing; /** * hardware * | * sc_rr * | sc_rfilters[0] * sc_rstreams[0] * | sc_rfilters[1] * sc_rstreams[1] * : * | sc_rfilters[n-1] * sc_rstreams[n-1] == sc_rustream * | uiomove(9) & read(2) * userland */ struct audio_ringbuffer sc_rr; /* Record ring */ int sc_nrfilters; /* number of filters */ stream_filter_t *sc_rfilters[AUDIO_MAX_FILTERS]; audio_stream_t sc_rstreams[AUDIO_MAX_FILTERS]; audio_stream_t *sc_rustream; /* the last buffer */ audio_params_t sc_rparams; /* record encoding parameters */ int sc_eof; /* EOF, i.e. zero sized write, counter */ u_long sc_wstamp; /* # of bytes read with read(2) */ 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; int sc_opencnt; bool 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 void *sc_powerhook; }; #endif /* _SYS_DEV_AUDIOVAR_H_ */