diff options
Diffstat (limited to 'sys/dev/sound/pcm/buffer.h')
| -rw-r--r-- | sys/dev/sound/pcm/buffer.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/sys/dev/sound/pcm/buffer.h b/sys/dev/sound/pcm/buffer.h new file mode 100644 index 0000000..5a73898 --- /dev/null +++ b/sys/dev/sound/pcm/buffer.h @@ -0,0 +1,119 @@ +/* + * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> + * 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. + * + * $FreeBSD$ + */ + +#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_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; + u_int32_t buf_addr; + struct selinfo sel; + char name[SNDBUF_NAMELEN]; +}; + +struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc); +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_uiomove(struct snd_dbuf *b, struct uio *uio, 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); |
