/* * Copyright (c) 1999 Cameron Grant * 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * $FreeBSD$ */ struct pcmchan_children { SLIST_ENTRY(pcmchan_children) link; struct pcm_channel *channel; }; struct pcmchan_caps { u_int32_t minspeed, maxspeed; u_int32_t *fmtlist; u_int32_t caps; }; #define CHN_NAMELEN 32 struct pcm_channel { kobj_t methods; int num; pid_t pid; int refcount; struct pcm_feeder *feeder; u_int32_t align; int volume; u_int32_t speed; u_int32_t format; u_int32_t flags; u_int32_t feederflags; u_int32_t blocks; int direction; unsigned int interrupts, xruns; struct snd_dbuf *bufhard, *bufsoft; struct snddev_info *parentsnddev; struct pcm_channel *parentchannel; void *devinfo; device_t dev; char name[CHN_NAMELEN]; struct mtx *lock; SLIST_HEAD(, pcmchan_children) children; }; #include "channel_if.h" int chn_reinit(struct pcm_channel *c); int chn_write(struct pcm_channel *c, struct uio *buf); int chn_read(struct pcm_channel *c, struct uio *buf); u_int32_t chn_start(struct pcm_channel *c, int force); int chn_sync(struct pcm_channel *c, int threshold); int chn_flush(struct pcm_channel *c); int chn_poll(struct pcm_channel *c, int ev, struct thread *td); int chn_init(struct pcm_channel *c, void *devinfo, int dir); int chn_kill(struct pcm_channel *c); int chn_setdir(struct pcm_channel *c, int dir); int chn_reset(struct pcm_channel *c, u_int32_t fmt); int chn_setvolume(struct pcm_channel *c, int left, int right); int chn_setspeed(struct pcm_channel *c, int speed); int chn_setformat(struct pcm_channel *c, u_int32_t fmt); int chn_setblocksize(struct pcm_channel *c, int blkcnt, int blksz); int chn_trigger(struct pcm_channel *c, int go); int chn_getptr(struct pcm_channel *c); struct pcmchan_caps *chn_getcaps(struct pcm_channel *c); u_int32_t chn_getformats(struct pcm_channel *c); void chn_resetbuf(struct pcm_channel *c); void chn_intr(struct pcm_channel *c); int chn_wrfeed(struct pcm_channel *c); int chn_rdfeed(struct pcm_channel *c); int chn_abort(struct pcm_channel *c); void chn_wrupdate(struct pcm_channel *c); void chn_rdupdate(struct pcm_channel *c); int chn_notify(struct pcm_channel *c, u_int32_t flags); #ifdef USING_MUTEX #define CHN_LOCK(c) mtx_lock((struct mtx *)((c)->lock)) #define CHN_UNLOCK(c) mtx_unlock((struct mtx *)((c)->lock)) #define CHN_LOCKASSERT(c) #else #define CHN_LOCK(c) #define CHN_UNLOCK(c) #define CHN_LOCKASSERT(c) #endif int fmtvalid(u_int32_t fmt, u_int32_t *fmtlist); #define PCMDIR_VIRTUAL 2 #define PCMDIR_PLAY 1 #define PCMDIR_REC -1 #define PCMTRIG_START 1 #define PCMTRIG_EMLDMAWR 2 #define PCMTRIG_EMLDMARD 3 #define PCMTRIG_STOP 0 #define PCMTRIG_ABORT -1 #define CHN_F_CLOSING 0x00000004 /* a pending close */ #define CHN_F_ABORTING 0x00000008 /* a pending abort */ #define CHN_F_RUNNING 0x00000010 /* dma is running */ #define CHN_F_TRIGGERED 0x00000020 #define CHN_F_NOTRIGGER 0x00000040 #define CHN_F_BUSY 0x00001000 /* has been opened */ #define CHN_F_HAS_SIZE 0x00002000 /* user set block size */ #define CHN_F_NBIO 0x00004000 /* do non-blocking i/o */ #define CHN_F_MAPPED 0x00010000 /* has been mmap()ed */ #define CHN_F_DEAD 0x00020000 #define CHN_F_BADSETTING 0x00040000 #define CHN_F_VIRTUAL 0x10000000 /* not backed by hardware */ #define CHN_F_RESET (CHN_F_BUSY | CHN_F_DEAD | CHN_F_VIRTUAL) #define CHN_N_RATE 0x00000001 #define CHN_N_FORMAT 0x00000002 #define CHN_N_VOLUME 0x00000004 #define CHN_N_BLOCKSIZE 0x00000008 #define CHN_N_TRIGGER 0x00000010 /* * This should be large enough to hold all pcm data between * tsleeps in chn_{read,write} at the highest sample rate. * (which is usually 48kHz * 16bit * stereo = 192000 bytes/sec) */ #define CHN_2NDBUFBLKSIZE (2 * 1024) /* The total number of blocks per secondary bufhard. */ #define CHN_2NDBUFBLKNUM (32) /* The size of a whole secondary bufhard. */ #define CHN_2NDBUFMAXSIZE (131072) #define CHANNEL_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, sizeof(struct kobj))