1 /*- 2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sys/dev/sound/pcm/feeder.h,v 1.12.2.1 2006/01/29 02:27:28 ariff Exp $ 27 * $DragonFly: src/sys/dev/sound/pcm/feeder.h,v 1.3 2007/01/04 21:47:03 corecode Exp $ 28 */ 29 30 struct pcm_feederdesc { 31 u_int32_t type; 32 u_int32_t in, out; 33 u_int32_t flags; 34 int idx; 35 }; 36 37 struct feeder_class { 38 KOBJ_CLASS_FIELDS; 39 int align; 40 struct pcm_feederdesc *desc; 41 void *data; 42 }; 43 44 struct pcm_feeder { 45 KOBJ_FIELDS; 46 int align; 47 struct pcm_feederdesc *desc, desc_static; 48 void *data; 49 struct feeder_class *class; 50 struct pcm_feeder *source, *parent; 51 52 }; 53 54 void feeder_register(void *p); 55 struct feeder_class *feeder_getclass(struct pcm_feederdesc *desc); 56 57 int chn_fmtscore(u_int32_t fmt); 58 u_int32_t chn_fmtbestbit(u_int32_t fmt, u_int32_t *fmts); 59 u_int32_t chn_fmtbeststereo(u_int32_t fmt, u_int32_t *fmts); 60 u_int32_t chn_fmtbest(u_int32_t fmt, u_int32_t *fmts); 61 u_int32_t chn_fmtchain(struct pcm_channel *c, u_int32_t *to); 62 int chn_addfeeder(struct pcm_channel *c, struct feeder_class *fc, struct pcm_feederdesc *desc); 63 int chn_removefeeder(struct pcm_channel *c); 64 struct pcm_feeder *chn_findfeeder(struct pcm_channel *c, u_int32_t type); 65 void feeder_printchain(struct pcm_feeder *head); 66 67 #define FEEDER_DECLARE(feeder, palign, pdata) \ 68 static struct feeder_class feeder ## _class = { \ 69 .name = #feeder, \ 70 .methods = feeder ## _methods, \ 71 .size = sizeof(struct pcm_feeder), \ 72 .align = palign, \ 73 .desc = feeder ## _desc, \ 74 .data = pdata, \ 75 }; \ 76 SYSINIT(feeder, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder ## _class); 77 78 #define FEEDER_ROOT 1 79 #define FEEDER_FMT 2 80 #define FEEDER_MIXER 3 81 #define FEEDER_RATE 4 82 #define FEEDER_FILTER 5 83 #define FEEDER_VOLUME 6 84 #define FEEDER_LAST FEEDER_VOLUME 85 86 #define FEEDRATE_SRC 1 87 #define FEEDRATE_DST 2 88 89 90