feeder_if.m

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#-
# KOBJ
#
# Copyright (c) 2000 Cameron Grant <cg@freebsd.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# $FreeBSD$
#
 
#include <dev/sound/pcm/sound.h>
 
INTERFACE feeder;
 
CODE {
 
        static int
        feeder_noinit(struct pcm_feeder* feeder)
        {
                return 0;
        }
 
        static int
        feeder_nofree(struct pcm_feeder* feeder)
        {
                return 0;
        }
 
        static int
        feeder_noset(struct pcm_feeder* feeder, int what, int value)
        {
                return -1;
        }
 
        static int
        feeder_noget(struct pcm_feeder* feeder, int what)
        {
                return -1;
        }
 
};
 
METHOD int init {
        struct pcm_feeder* feeder;
} DEFAULT feeder_noinit;
 
METHOD int free {
        struct pcm_feeder* feeder;
} DEFAULT feeder_nofree;
 
METHOD int set {
        struct pcm_feeder* feeder;
        int what;
        int value;
} DEFAULT feeder_noset;
 
METHOD int get {
        struct pcm_feeder* feeder;
        int what;
} DEFAULT feeder_noget;
 
METHOD int feed {
        struct pcm_feeder* feeder;
        struct pcm_channel* c;
        u_int8_t* buffer;
        u_int32_t count;
        void* source;
};