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c30ec7427a
- Rearrange FEEDER_* constants starting from 0 to 31, so the future additions will be much easier and consistent. - Introduce FEEDER_SWAPLR. Few super broken hardwares (found on several extremely cheap uaudio stick, possibly others) mistakenly wired left and right channels wrongly, screwing output or input.
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/*-
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* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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struct pcm_feederdesc {
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u_int32_t type;
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u_int32_t in, out;
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u_int32_t flags;
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int idx;
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};
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struct feeder_class {
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KOBJ_CLASS_FIELDS;
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int align;
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struct pcm_feederdesc *desc;
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void *data;
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};
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struct pcm_feeder {
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KOBJ_FIELDS;
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int align;
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struct pcm_feederdesc *desc, desc_static;
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void *data;
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struct feeder_class *class;
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struct pcm_feeder *source, *parent;
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};
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void feeder_register(void *p);
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struct feeder_class *feeder_getclass(struct pcm_feederdesc *desc);
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u_int32_t chn_fmtscore(u_int32_t fmt);
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u_int32_t chn_fmtbestbit(u_int32_t fmt, u_int32_t *fmts);
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u_int32_t chn_fmtbeststereo(u_int32_t fmt, u_int32_t *fmts);
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u_int32_t chn_fmtbest(u_int32_t fmt, u_int32_t *fmts);
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u_int32_t chn_fmtchain(struct pcm_channel *c, u_int32_t *to);
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int chn_addfeeder(struct pcm_channel *c, struct feeder_class *fc, struct pcm_feederdesc *desc);
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int chn_removefeeder(struct pcm_channel *c);
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struct pcm_feeder *chn_findfeeder(struct pcm_channel *c, u_int32_t type);
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void feeder_printchain(struct pcm_feeder *head);
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#define FEEDER_DECLARE(feeder, palign, pdata) \
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static struct feeder_class feeder ## _class = { \
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.name = #feeder, \
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.methods = feeder ## _methods, \
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.size = sizeof(struct pcm_feeder), \
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.align = palign, \
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.desc = feeder ## _desc, \
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.data = pdata, \
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}; \
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SYSINIT(feeder, SI_SUB_DRIVERS, SI_ORDER_ANY, feeder_register, &feeder ## _class);
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#define FEEDER_ROOT 0
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#define FEEDER_FMT 1
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#define FEEDER_MIXER 2
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#define FEEDER_RATE 3
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#define FEEDER_FILTER 4
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#define FEEDER_VOLUME 5
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#define FEEDER_SWAPLR 6
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#define FEEDER_LAST 32
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#define FEEDRATE_SRC 1
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#define FEEDRATE_DST 2
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#define FEEDRATE_RATEMIN 1
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#define FEEDRATE_RATEMAX 2016000 /* 48000 * 42 */
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#define FEEDRATE_MIN 1
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#define FEEDRATE_MAX 0x7fffff /* sign 24bit ~ 8ghz ! */
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#define FEEDRATE_ROUNDHZ 25
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#define FEEDRATE_ROUNDHZ_MIN 0
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#define FEEDRATE_ROUNDHZ_MAX 500
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/*
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* Default buffer size for feeder processing.
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*
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* Big = less sndbuf_feed(), more memory usage.
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* Small = aggresive sndbuf_feed() (perhaps too much), less memory usage.
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*/
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#define FEEDBUFSZ 16384
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#define FEEDBUFSZ_MIN 2048
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#define FEEDBUFSZ_MAX 131072
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extern int feeder_rate_min;
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extern int feeder_rate_max;
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extern int feeder_rate_round;
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extern int feeder_buffersize;
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