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
29 #define SND_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_DMA)
30 #define SNDBUF_LOCKASSERT(b)
32 #define SNDBUF_F_DMA 0x00000001
33 #define SNDBUF_F_XRUN 0x00000002
34 #define SNDBUF_F_RUNNING 0x00000004
35 #define SNDBUF_F_MANAGED 0x00000008
37 #define SNDBUF_NAMELEN 48
41 u_int8_t *buf, *tmpbuf;
42 u_int8_t *shadbuf; /**< shadow buffer used w/ S_D_SILENCE/SKIP */
43 volatile int sl; /**< shadbuf ready length in # of bytes */
44 unsigned int bufsize, maxsize, allocsize;
45 volatile int dl; /* transfer size */
46 volatile int rp; /* pointers to the ready area */
47 volatile int rl; /* length of ready area */
49 volatile u_int32_t total, prev_total;
50 int dmachan, dir; /* dma channel */
51 u_int32_t fmt, spd, bps;
52 unsigned int blksz, blkcnt;
60 struct pcm_channel *channel;
61 char name[SNDBUF_NAMELEN];
64 struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel);
65 void sndbuf_destroy(struct snd_dbuf *b);
67 void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what);
69 int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, int dmaflags, unsigned int size);
70 int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size);
71 void sndbuf_free(struct snd_dbuf *b);
72 int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
73 int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
74 void sndbuf_reset(struct snd_dbuf *b);
75 void sndbuf_clear(struct snd_dbuf *b, unsigned int length);
76 void sndbuf_fillsilence(struct snd_dbuf *b);
77 void sndbuf_softreset(struct snd_dbuf *b);
78 void sndbuf_clearshadow(struct snd_dbuf *b);
80 u_int32_t sndbuf_getfmt(struct snd_dbuf *b);
81 int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt);
82 unsigned int sndbuf_getspd(struct snd_dbuf *b);
83 void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd);
84 unsigned int sndbuf_getbps(struct snd_dbuf *b);
86 bus_addr_t sndbuf_getbufaddr(struct snd_dbuf *buf);
88 void *sndbuf_getbuf(struct snd_dbuf *b);
89 void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs);
90 unsigned int sndbuf_getsize(struct snd_dbuf *b);
91 unsigned int sndbuf_getmaxsize(struct snd_dbuf *b);
92 unsigned int sndbuf_getallocsize(struct snd_dbuf *b);
93 unsigned int sndbuf_getalign(struct snd_dbuf *b);
94 unsigned int sndbuf_getblkcnt(struct snd_dbuf *b);
95 void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt);
96 unsigned int sndbuf_getblksz(struct snd_dbuf *b);
97 void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz);
98 unsigned int sndbuf_runsz(struct snd_dbuf *b);
99 void sndbuf_setrun(struct snd_dbuf *b, int go);
100 struct selinfo *sndbuf_getsel(struct snd_dbuf *b);
102 unsigned int sndbuf_getxrun(struct snd_dbuf *b);
103 void sndbuf_setxrun(struct snd_dbuf *b, unsigned int xrun);
104 unsigned int sndbuf_gethwptr(struct snd_dbuf *b);
105 void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr);
106 unsigned int sndbuf_getfree(struct snd_dbuf *b);
107 unsigned int sndbuf_getfreeptr(struct snd_dbuf *b);
108 unsigned int sndbuf_getready(struct snd_dbuf *b);
109 unsigned int sndbuf_getreadyptr(struct snd_dbuf *b);
110 unsigned int sndbuf_getblocks(struct snd_dbuf *b);
111 unsigned int sndbuf_getprevblocks(struct snd_dbuf *b);
112 unsigned int sndbuf_gettotal(struct snd_dbuf *b);
113 unsigned int snd_xbytes(unsigned int v, unsigned int from, unsigned int to);
114 unsigned int sndbuf_xbytes(unsigned int v, struct snd_dbuf *from, struct snd_dbuf *to);
115 u_int8_t sndbuf_zerodata(u_int32_t fmt);
116 void sndbuf_updateprevtotal(struct snd_dbuf *b);
118 int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count);
119 int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count);
120 int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count);
122 u_int32_t sndbuf_getflags(struct snd_dbuf *b);
123 void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on);
125 int sndbuf_dmasetup(struct snd_dbuf *b, struct resource *drq);
126 int sndbuf_dmasetdir(struct snd_dbuf *b, int dir);
127 void sndbuf_dma(struct snd_dbuf *b, int go);
128 int sndbuf_dmaptr(struct snd_dbuf *b);
129 void sndbuf_dmabounce(struct snd_dbuf *b);
131 #ifdef OSSV4_EXPERIMENT
132 void sndbuf_getpeaks(struct snd_dbuf *b, int *lp, int *rp);