/*- * 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: src/sys/dev/sound/pcm/buffer.h,v 1.10.2.2 2007/05/13 20:50:31 ariff Exp $ * $DragonFly: src/sys/dev/sound/pcm/buffer.h,v 1.4 2007/06/16 19:48:05 hasso Exp $ */ #define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA) #define SNDBUF_LOCKASSERT(b) #define SNDBUF_F_DMA 0x00000001 #define SNDBUF_F_XRUN 0x00000002 #define SNDBUF_F_RUNNING 0x00000004 #define SNDBUF_F_MANAGED 0x00000008 #define SNDBUF_NAMELEN 48 struct snd_dbuf { device_t dev; u_int8_t *buf, *tmpbuf; unsigned int bufsize, maxsize; volatile int dl; /* transfer size */ volatile int rp; /* pointers to the ready area */ volatile int rl; /* length of ready area */ volatile int hp; volatile u_int32_t total, prev_total; int dmachan, dir; /* dma channel */ u_int32_t fmt, spd, bps; unsigned int blksz, blkcnt; int xrun; u_int32_t flags; bus_dmamap_t dmamap; bus_dma_tag_t dmatag; bus_addr_t buf_addr; struct selinfo sel; struct pcm_channel *channel; char name[SNDBUF_NAMELEN]; }; struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel); void sndbuf_destroy(struct snd_dbuf *b); void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what); int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size); int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size); void sndbuf_free(struct snd_dbuf *b); int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); void sndbuf_reset(struct snd_dbuf *b); void sndbuf_clear(struct snd_dbuf *b, unsigned int length); void sndbuf_fillsilence(struct snd_dbuf *b); u_int32_t sndbuf_getfmt(struct snd_dbuf *b); int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt); unsigned int sndbuf_getspd(struct snd_dbuf *b); void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd); unsigned int sndbuf_getbps(struct snd_dbuf *b); bus_addr_t sndbuf_getbufaddr(struct snd_dbuf *buf); void *sndbuf_getbuf(struct snd_dbuf *b); void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs); unsigned int sndbuf_getsize(struct snd_dbuf *b); unsigned int sndbuf_getmaxsize(struct snd_dbuf *b); unsigned int sndbuf_getalign(struct snd_dbuf *b); unsigned int sndbuf_getblkcnt(struct snd_dbuf *b); void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt); unsigned int sndbuf_getblksz(struct snd_dbuf *b); void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz); unsigned int sndbuf_runsz(struct snd_dbuf *b); void sndbuf_setrun(struct snd_dbuf *b, int go); struct selinfo *sndbuf_getsel(struct snd_dbuf *b); unsigned int sndbuf_getxrun(struct snd_dbuf *b); void sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt); unsigned int sndbuf_gethwptr(struct snd_dbuf *b); void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr); unsigned int sndbuf_getfree(struct snd_dbuf *b); unsigned int sndbuf_getfreeptr(struct snd_dbuf *b); unsigned int sndbuf_getready(struct snd_dbuf *b); unsigned int sndbuf_getreadyptr(struct snd_dbuf *b); unsigned int sndbuf_getblocks(struct snd_dbuf *b); unsigned int sndbuf_getprevblocks(struct snd_dbuf *b); unsigned int sndbuf_gettotal(struct snd_dbuf *b); void sndbuf_updateprevtotal(struct snd_dbuf *b); int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count); int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count); int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count); u_int32_t sndbuf_getflags(struct snd_dbuf *b); void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on); int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq); int sndbuf_dmasetdir(struct snd_dbuf *b, int dir); void sndbuf_dma(struct snd_dbuf *b, int go); int sndbuf_dmaptr(struct snd_dbuf *b); void sndbuf_dmabounce(struct snd_dbuf *b);