xref: /freebsd/sys/dev/sound/pcm/feeder_if.m (revision 0b3105a37d7adcadcb720112fed4dc4e8040be99) 
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# $FreeBSD$
29#
30
31#include <dev/sound/pcm/sound.h>
32
33INTERFACE feeder;
34
35CODE {
36
37	static int
38	feeder_noinit(struct pcm_feeder* feeder)
39	{
40		return 0;
41	}
42
43	static int
44	feeder_nofree(struct pcm_feeder* feeder)
45	{
46		return 0;
47	}
48
49	static int
50	feeder_noset(struct pcm_feeder* feeder, int what, int value)
51	{
52		return -1;
53	}
54
55	static int
56	feeder_noget(struct pcm_feeder* feeder, int what)
57	{
58		return -1;
59	}
60
61};
62
63METHOD int init {
64	struct pcm_feeder* feeder;
65} DEFAULT feeder_noinit;
66
67METHOD int free {
68	struct pcm_feeder* feeder;
69} DEFAULT feeder_nofree;
70
71METHOD int set {
72	struct pcm_feeder* feeder;
73	int what;
74	int value;
75} DEFAULT feeder_noset;
76
77METHOD int get {
78	struct pcm_feeder* feeder;
79	int what;
80} DEFAULT feeder_noget;
81
82METHOD int feed {
83	struct pcm_feeder* feeder;
84	struct pcm_channel* c;
85	u_int8_t* buffer;
86	u_int32_t count;
87	void* source;
88};
89