1 /* 2 * Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk> 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 * $FreeBSD$ 27 */ 28 29 void feeder_register(void *p); 30 pcm_feeder *feeder_get(struct pcm_feederdesc *desc); 31 pcm_feeder *feeder_getroot(void); 32 int feeder_set(pcm_feeder *feeder, int what, int value); 33 34 u_int32_t chn_fmtchain(pcm_channel *c, u_int32_t *to); 35 int chn_addfeeder(pcm_channel *c, pcm_feeder *f); 36 int chn_removefeeder(pcm_channel *c); 37 pcm_feeder *chn_findfeeder(pcm_channel *c, u_int32_t type); 38 39 #define FEEDER_DECLARE(feeder) SYSINIT(feeder, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder) 40 41 #define FEEDER_ROOT 1 42 #define FEEDER_FMT 2 43 #define FEEDER_RATE 3 44 #define FEEDER_FILTER 4 45 #define FEEDER_VOLUME 5 46 #define FEEDER_LAST FEEDER_VOLUME 47 48 #define FEEDRATE_SRC 1 49 #define FEEDRATE_DST 2 50 51 52