The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/feeder_if.m

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    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: releng/5.2/sys/dev/sound/pcm/feeder_if.m 95840 2002-05-01 03:07:40Z obrien $
   28 #
   29 
   30 #include <dev/sound/pcm/sound.h>
   31 
   32 INTERFACE feeder;
   33 
   34 CODE {
   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 
   62 METHOD int init {
   63         struct pcm_feeder* feeder;
   64 } DEFAULT feeder_noinit;
   65 
   66 METHOD int free {
   67         struct pcm_feeder* feeder;
   68 } DEFAULT feeder_nofree;
   69 
   70 METHOD int set {
   71         struct pcm_feeder* feeder;
   72         int what;
   73         int value;
   74 } DEFAULT feeder_noset;
   75 
   76 METHOD int get {
   77         struct pcm_feeder* feeder;
   78         int what;
   79 } DEFAULT feeder_noget;
   80 
   81 METHOD 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 };

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