1 /* 2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #define ISA_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_ISADMA) 30 #define SNDBUF_LOCKASSERT(b) 31 32 #define SNDBUF_F_ISADMA 0x00000001 33 #define SNDBUF_F_XRUN 0x00000002 34 #define SNDBUF_F_RUNNING 0x00000004 35 36 struct snd_dbuf *sndbuf_create(char *drv, char *desc); 37 void sndbuf_destroy(struct snd_dbuf *b); 38 39 void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what); 40 41 int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size); 42 int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size); 43 void sndbuf_free(struct snd_dbuf *b); 44 int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); 45 int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz); 46 void sndbuf_reset(struct snd_dbuf *b); 47 void sndbuf_clear(struct snd_dbuf *b, unsigned int length); 48 void sndbuf_fillsilence(struct snd_dbuf *b); 49 50 u_int32_t sndbuf_getfmt(struct snd_dbuf *b); 51 int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt); 52 unsigned int sndbuf_getspd(struct snd_dbuf *b); 53 void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd); 54 unsigned int sndbuf_getbps(struct snd_dbuf *b); 55 56 void *sndbuf_getbuf(struct snd_dbuf *b); 57 void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs); 58 unsigned int sndbuf_getsize(struct snd_dbuf *b); 59 unsigned int sndbuf_getmaxsize(struct snd_dbuf *b); 60 unsigned int sndbuf_getalign(struct snd_dbuf *b); 61 unsigned int sndbuf_getblkcnt(struct snd_dbuf *b); 62 void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt); 63 unsigned int sndbuf_getblksz(struct snd_dbuf *b); 64 void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz); 65 unsigned int sndbuf_runsz(struct snd_dbuf *b); 66 void sndbuf_setrun(struct snd_dbuf *b, int go); 67 struct selinfo *sndbuf_getsel(struct snd_dbuf *b); 68 69 unsigned int sndbuf_getxrun(struct snd_dbuf *b); 70 void sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt); 71 unsigned int sndbuf_gethwptr(struct snd_dbuf *b); 72 void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr); 73 unsigned int sndbuf_getfree(struct snd_dbuf *b); 74 unsigned int sndbuf_getfreeptr(struct snd_dbuf *b); 75 unsigned int sndbuf_getready(struct snd_dbuf *b); 76 unsigned int sndbuf_getreadyptr(struct snd_dbuf *b); 77 unsigned int sndbuf_getblocks(struct snd_dbuf *b); 78 unsigned int sndbuf_getprevblocks(struct snd_dbuf *b); 79 unsigned int sndbuf_gettotal(struct snd_dbuf *b); 80 void sndbuf_updateprevtotal(struct snd_dbuf *b); 81 82 int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count); 83 int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count); 84 int sndbuf_uiomove(struct snd_dbuf *b, struct uio *uio, unsigned int count); 85 int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count); 86 87 u_int32_t sndbuf_getflags(struct snd_dbuf *b); 88 void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on); 89 90 int sndbuf_isadmasetup(struct snd_dbuf *b, struct resource *drq); 91 int sndbuf_isadmasetdir(struct snd_dbuf *b, int dir); 92 void sndbuf_isadma(struct snd_dbuf *b, int go); 93 int sndbuf_isadmaptr(struct snd_dbuf *b); 94 void sndbuf_isadmabounce(struct snd_dbuf *b); 95 96 97