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: releng/5.0/sys/dev/sound/pcm/buffer.h 89834 2002-01-26 22:13:24Z cg $
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(device_t dev, 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
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