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/fake.c,v 1.14.2.1 2005/12/30 19:55:54 netchild Exp $
29 #include <dev/sound/pcm/sound.h>
32 static u_int32_t fk_fmt[] = {
34 AFMT_STEREO | AFMT_MU_LAW,
36 AFMT_STEREO | AFMT_A_LAW,
38 AFMT_STEREO | AFMT_U8,
40 AFMT_STEREO | AFMT_S8,
42 AFMT_STEREO | AFMT_S16_LE,
44 AFMT_STEREO | AFMT_U16_LE,
46 AFMT_STEREO | AFMT_S16_BE,
48 AFMT_STEREO | AFMT_U16_BE,
50 AFMT_STEREO | AFMT_S24_LE,
52 AFMT_STEREO | AFMT_U24_LE,
54 AFMT_STEREO | AFMT_S24_BE,
56 AFMT_STEREO | AFMT_U24_BE,
58 AFMT_STEREO | AFMT_S32_LE,
60 AFMT_STEREO | AFMT_U32_LE,
62 AFMT_STEREO | AFMT_S32_BE,
64 AFMT_STEREO | AFMT_U32_BE,
67 static struct pcmchan_caps fk_caps = {0, 1000000, fk_fmt, 0};
70 static char fakebuf[FKBUFSZ];
72 /* channel interface */
74 fkchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
76 sndbuf_setup(b, fakebuf, FKBUFSZ);
77 return (void *)0xbabef00d;
81 fkchan_free(kobj_t obj, void *data)
87 fkchan_setformat(kobj_t obj, void *data, u_int32_t format)
93 fkchan_setspeed(kobj_t obj, void *data, u_int32_t speed)
99 fkchan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
105 fkchan_trigger(kobj_t obj, void *data, int go)
111 fkchan_getptr(kobj_t obj, void *data)
116 static struct pcmchan_caps *
117 fkchan_getcaps(kobj_t obj, void *data)
122 static kobj_method_t fkchan_methods[] = {
123 KOBJMETHOD(channel_init, fkchan_init),
124 KOBJMETHOD(channel_free, fkchan_free),
125 KOBJMETHOD(channel_setformat, fkchan_setformat),
126 KOBJMETHOD(channel_setspeed, fkchan_setspeed),
127 KOBJMETHOD(channel_setblocksize, fkchan_setblocksize),
128 KOBJMETHOD(channel_trigger, fkchan_trigger),
129 KOBJMETHOD(channel_getptr, fkchan_getptr),
130 KOBJMETHOD(channel_getcaps, fkchan_getcaps),
133 CHANNEL_DECLARE(fkchan);
136 fkchan_setup(device_t dev)
138 struct snddev_info *d = device_get_softc(dev);
139 struct pcm_channel *c;
141 c = kmalloc(sizeof(*c), M_DEVBUF, M_WAITOK);
142 c->methods = kobj_create(&fkchan_class, M_DEVBUF, M_WAITOK);
145 * Fake channel is such a blessing in disguise. Using this,
146 * we can keep track prefered virtual channel speed without
147 * querying kernel hint repetitively (see vchan_create / vchan.c).
150 ksnprintf(c->name, CHN_NAMELEN, "%s:fake", device_get_nameunit(dev));
156 fkchan_kill(struct pcm_channel *c)
158 kobj_delete(c->methods, M_DEVBUF);