xref: /freebsd/sys/dev/sound/pcm/feeder_if.m (revision 61e21613) 
1#-
2# KOBJ
3#
4# Copyright (c) 2000 Cameron Grant <cg@freebsd.org>
5# All rights reserved.
6#
7# Redistribution and use in source and binary forms, with or without
8# modification, are permitted provided that the following conditions
9# are met:
10# 1. Redistributions of source code must retain the above copyright
11#    notice, this list of conditions and the following disclaimer.
12# 2. Redistributions in binary form must reproduce the above copyright
13#    notice, this list of conditions and the following disclaimer in the
14#    documentation and/or other materials provided with the distribution.
15#
16# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26# SUCH DAMAGE.
27#
28#
29
30#include <dev/sound/pcm/sound.h>
31
32INTERFACE feeder;
33
34CODE {
35
36	static int
37	feeder_noinit(struct pcm_feeder* feeder)
38	{
39		return 0;
40	}
41
42	static int
43	feeder_nofree(struct pcm_feeder* feeder)
44	{
45		return 0;
46	}
47
48	static int
49	feeder_noset(struct pcm_feeder* feeder, int what, int value)
50	{
51		return -1;
52	}
53
54	static int
55	feeder_noget(struct pcm_feeder* feeder, int what)
56	{
57		return -1;
58	}
59
60};
61
62METHOD int init {
63	struct pcm_feeder* feeder;
64} DEFAULT feeder_noinit;
65
66METHOD int free {
67	struct pcm_feeder* feeder;
68} DEFAULT feeder_nofree;
69
70METHOD int set {
71	struct pcm_feeder* feeder;
72	int what;
73	int value;
74} DEFAULT feeder_noset;
75
76METHOD int get {
77	struct pcm_feeder* feeder;
78	int what;
79} DEFAULT feeder_noget;
80
81METHOD int feed {
82	struct pcm_feeder* feeder;
83	struct pcm_channel* c;
84	u_int8_t* buffer;
85	u_int32_t count;
86	void* source;
87};
88