channel_if.m

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#-
# KOBJ
#
# Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
# Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006
# 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
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
 
#include <dev/sound/pcm/sound.h>
 
INTERFACE channel;
 
CODE {
 
        static int
        channel_noreset(kobj_t obj, void *data)
        {
                return 0;
        }
 
        static int
        channel_noresetdone(kobj_t obj, void *data)
        {
                return 0;
        }
 
        static int
        channel_nofree(kobj_t obj, void *data)
        {
                return 1;
        }
 
        static u_int32_t
        channel_nogetptr(kobj_t obj, void *data)
        {
                return 0;
        }
 
        static int
        channel_nonotify(kobj_t obj, void *data, u_int32_t changed)
        {
                return 0;
        }
 
        static int
        channel_nogetpeaks(kobj_t obj, void *data, int *lpeak, int *rpeak)
        {
                return -1;
        }
 
        static int
        channel_nogetrates(kobj_t obj, void *data, int **rates)
        {
                *rates = NULL;
                return 0;
        }
 
        static int
        channel_nosetfragments(kobj_t obj, void *data, u_int32_t blocksize, u_int32_t blockcount)
        {
                return ENOTSUP;
        }
 
        static struct pcmchan_matrix *
        channel_nogetmatrix(kobj_t obj, void *data, u_int32_t format)
        {
                format = feeder_matrix_default_format(format);
                return (feeder_matrix_format_map(format));
        }
 
        static int
        channel_nosetmatrix(kobj_t obj, void *data, struct pcmchan_matrix *m)
        {
                return ENOTSUP;
        }
};
 
METHOD void* init {
        kobj_t obj;
        void *devinfo;
        struct snd_dbuf *b;
        struct pcm_channel *c;
        int dir;
};
 
METHOD int free {
        kobj_t obj;
        void *data;
} DEFAULT channel_nofree;
 
METHOD int reset {
        kobj_t obj;
        void *data;
} DEFAULT channel_noreset;
 
METHOD int resetdone {
        kobj_t obj;
        void *data;
} DEFAULT channel_noresetdone;
 
METHOD int setformat {
        kobj_t obj;
        void *data;
        u_int32_t format;
};
 
METHOD u_int32_t setspeed {
        kobj_t obj;
        void *data;
        u_int32_t speed;
};
 
METHOD u_int32_t setblocksize {
        kobj_t obj;
        void *data;
        u_int32_t blocksize;
};
 
METHOD int setfragments {
        kobj_t obj;
        void *data;
        u_int32_t blocksize;
        u_int32_t blockcount;
} DEFAULT channel_nosetfragments;
 
METHOD int trigger {
        kobj_t obj;
        void *data;
        int go;
};
 
METHOD u_int32_t getptr {
        kobj_t obj;
        void *data;
} DEFAULT channel_nogetptr;
 
METHOD struct pcmchan_caps* getcaps {
        kobj_t obj;
        void *data;
};
 
METHOD int notify {
        kobj_t obj;
        void *data;
        u_int32_t changed;
} DEFAULT channel_nonotify;
 
METHOD int getpeaks {
        kobj_t obj;
        void *data;
        int *lpeak;
        int *rpeak;
} DEFAULT channel_nogetpeaks;
 
METHOD int getrates {
        kobj_t obj;
        void *data;
        int **rates;
} DEFAULT channel_nogetrates;
 
METHOD struct pcmchan_matrix * getmatrix {
        kobj_t obj;
        void *data;
        u_int32_t format;
} DEFAULT channel_nogetmatrix;
 
METHOD int setmatrix {
        kobj_t obj;
        void *data;
        struct pcmchan_matrix *m;
} DEFAULT channel_nosetmatrix;