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Diffstat (limited to 'sys/dev/sound/pcm/feeder.h')
| -rw-r--r-- | sys/dev/sound/pcm/feeder.h | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sys/dev/sound/pcm/feeder.h b/sys/dev/sound/pcm/feeder.h new file mode 100644 index 0000000..9fb8ff7 --- /dev/null +++ b/sys/dev/sound/pcm/feeder.h @@ -0,0 +1,83 @@ +/* + * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> + * 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. + * + * $FreeBSD$ + */ + +struct pcm_feederdesc { + u_int32_t type; + u_int32_t in, out; + u_int32_t flags; + int idx; +}; + +struct feeder_class { + KOBJ_CLASS_FIELDS; + int align; + struct pcm_feederdesc *desc; + void *data; +}; + +struct pcm_feeder { + KOBJ_FIELDS; + int align; + struct pcm_feederdesc *desc, desc_static; + void *data; + struct feeder_class *class; + struct pcm_feeder *source, *parent; + +}; + +void feeder_register(void *p); +struct feeder_class *feeder_getclass(struct pcm_feederdesc *desc); + +u_int32_t chn_fmtchain(struct pcm_channel *c, u_int32_t *to); +int chn_addfeeder(struct pcm_channel *c, struct feeder_class *fc, struct pcm_feederdesc *desc); +int chn_removefeeder(struct pcm_channel *c); +struct pcm_feeder *chn_findfeeder(struct pcm_channel *c, u_int32_t type); + +#define FEEDER_DECLARE(feeder, palign, pdata) \ +static struct feeder_class feeder ## _class = { \ + name: #feeder, \ + methods: feeder ## _methods, \ + size: sizeof(struct pcm_feeder), \ + align: palign, \ + desc: feeder ## _desc, \ + data: pdata, \ +}; \ +SYSINIT(feeder, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder ## _class); + +#define FEEDER_ROOT 1 +#define FEEDER_FMT 2 +#define FEEDER_MIXER 3 +#define FEEDER_RATE 4 +#define FEEDER_FILTER 5 +#define FEEDER_VOLUME 6 +#define FEEDER_LAST FEEDER_VOLUME + +#define FEEDRATE_SRC 1 +#define FEEDRATE_DST 2 + + |
