2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
26 * $FreeBSD: src/sys/dev/sound/pcm/buffer.h,v 1.10 2005/01/06 01:43:20 imp Exp $
27 * $DragonFly: src/sys/dev/sound/pcm/buffer.h,v 1.3 2007/01/04 21:47:03 corecode Exp $
30 #define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA)
31 #define SNDBUF_LOCKASSERT(b)
33 #define SNDBUF_F_DMA 0x00000001
34 #define SNDBUF_F_XRUN 0x00000002
35 #define SNDBUF_F_RUNNING 0x00000004
37 #define SNDBUF_NAMELEN 48
41 u_int8_t *buf, *tmpbuf;
42 unsigned int bufsize, maxsize;
43 volatile int dl; /* transfer size */
44 volatile int rp; /* pointers to the ready area */
45 volatile int rl; /* length of ready area */
47 volatile u_int32_t total, prev_total;
48 int dmachan, dir; /* dma channel */
49 u_int32_t fmt, spd, bps;
50 unsigned int blksz, blkcnt;
57 struct pcm_channel *channel;
58 char name[SNDBUF_NAMELEN];
61 struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel);
62 void sndbuf_destroy(struct snd_dbuf *b);
64 void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what);
66 int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size);
67 int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size);
68 void sndbuf_free(struct snd_dbuf *b);
69 int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
70 int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
71 void sndbuf_reset(struct snd_dbuf *b);
72 void sndbuf_clear(struct snd_dbuf *b, unsigned int length);
73 void sndbuf_fillsilence(struct snd_dbuf *b);
75 u_int32_t sndbuf_getfmt(struct snd_dbuf *b);
76 int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt);
77 unsigned int sndbuf_getspd(struct snd_dbuf *b);
78 void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd);
79 unsigned int sndbuf_getbps(struct snd_dbuf *b);
81 bus_addr_t sndbuf_getbufaddr(struct snd_dbuf *buf);
83 void *sndbuf_getbuf(struct snd_dbuf *b);
84 void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs);
85 unsigned int sndbuf_getsize(struct snd_dbuf *b);
86 unsigned int sndbuf_getmaxsize(struct snd_dbuf *b);
87 unsigned int sndbuf_getalign(struct snd_dbuf *b);
88 unsigned int sndbuf_getblkcnt(struct snd_dbuf *b);
89 void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt);
90 unsigned int sndbuf_getblksz(struct snd_dbuf *b);
91 void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz);
92 unsigned int sndbuf_runsz(struct snd_dbuf *b);
93 void sndbuf_setrun(struct snd_dbuf *b, int go);
94 struct selinfo *sndbuf_getsel(struct snd_dbuf *b);
96 unsigned int sndbuf_getxrun(struct snd_dbuf *b);
97 void sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt);
98 unsigned int sndbuf_gethwptr(struct snd_dbuf *b);
99 void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr);
100 unsigned int sndbuf_getfree(struct snd_dbuf *b);
101 unsigned int sndbuf_getfreeptr(struct snd_dbuf *b);
102 unsigned int sndbuf_getready(struct snd_dbuf *b);
103 unsigned int sndbuf_getreadyptr(struct snd_dbuf *b);
104 unsigned int sndbuf_getblocks(struct snd_dbuf *b);
105 unsigned int sndbuf_getprevblocks(struct snd_dbuf *b);
106 unsigned int sndbuf_gettotal(struct snd_dbuf *b);
107 void sndbuf_updateprevtotal(struct snd_dbuf *b);
109 int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count);
110 int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count);
111 int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count);
113 u_int32_t sndbuf_getflags(struct snd_dbuf *b);
114 void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on);
116 int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq);
117 int sndbuf_dmasetdir(struct snd_dbuf *b, int dir);
118 void sndbuf_dma(struct snd_dbuf *b, int go);
119 int sndbuf_dmaptr(struct snd_dbuf *b);
120 void sndbuf_dmabounce(struct snd_dbuf *b);