xref: /freebsd/sys/dev/sound/pcm/channel_if.m (revision 5521ff5a4d1929056e7ffc982fac3341ca54df7c) 
1# KOBJ
2#
3# Copyright (c) 2000 Cameron Grant <cg@freebsd.org>
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD$
28#
29
30#include <dev/sound/pcm/sound.h>
31
32INTERFACE channel;
33
34CODE {
35
36	static int
37	channel_nosetdir(kobj_t obj, void *data, int dir)
38	{
39		return 0;
40	}
41
42	static int
43	channel_noreset(kobj_t obj, void *data)
44	{
45		return 0;
46	}
47
48	static int
49	channel_noresetdone(kobj_t obj, void *data)
50	{
51		return 0;
52	}
53
54	static int
55	channel_nofree(kobj_t obj, void *data)
56	{
57		return 1;
58	}
59
60	static u_int32_t
61	channel_nogetptr(kobj_t obj, void *data)
62	{
63		return 0;
64	}
65
66	static int
67	channel_nonotify(kobj_t obj, void *data, u_int32_t changed)
68	{
69		return 0;
70	}
71
72};
73
74METHOD void* init {
75	kobj_t obj;
76	void *devinfo;
77	struct snd_dbuf *b;
78	struct pcm_channel *c;
79	int dir;
80};
81
82METHOD int free {
83	kobj_t obj;
84	void *data;
85} DEFAULT channel_nofree;
86
87METHOD int reset {
88	kobj_t obj;
89	void *data;
90} DEFAULT channel_noreset;
91
92METHOD int resetdone {
93	kobj_t obj;
94	void *data;
95} DEFAULT channel_noresetdone;
96
97METHOD int setdir {
98	kobj_t obj;
99	void *data;
100	int dir;
101} DEFAULT channel_nosetdir;
102
103METHOD u_int32_t setformat {
104	kobj_t obj;
105	void *data;
106	u_int32_t format;
107};
108
109METHOD u_int32_t setspeed {
110	kobj_t obj;
111	void *data;
112	u_int32_t speed;
113};
114
115METHOD u_int32_t setblocksize {
116	kobj_t obj;
117	void *data;
118	u_int32_t blocksize;
119};
120
121METHOD int trigger {
122	kobj_t obj;
123	void *data;
124	int go;
125};
126
127METHOD u_int32_t getptr {
128	kobj_t obj;
129	void *data;
130} DEFAULT channel_nogetptr;
131
132METHOD struct pcmchan_caps* getcaps {
133	kobj_t obj;
134	void *data;
135};
136
137METHOD int notify {
138	kobj_t obj;
139	void *data;
140	u_int32_t changed;
141} DEFAULT channel_nonotify;
142