/*- * Copyright (c) 2001 Cameron Grant * 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. * * $FreeBSD$ */ int vchan_create(struct pcm_channel *parent, int num); int vchan_destroy(struct pcm_channel *c); int vchan_initsys(device_t dev); /* * Default speed / format */ #define VCHAN_DEFAULT_SPEED 48000 #define VCHAN_DEFAULT_AFMT (AFMT_S16_LE | AFMT_STEREO) #define VCHAN_DEFAULT_STRFMT "s16le" #define VCHAN_PLAY 0 #define VCHAN_REC 1 /* * Offset by +/- 1 so we can distinguish bogus pointer. */ #define VCHAN_SYSCTL_DATA(x, y) \ ((void *)((intptr_t)(((((x) + 1) & 0xfff) << 2) | \ (((VCHAN_##y) + 1) & 0x3)))) #define VCHAN_SYSCTL_DATA_SIZE sizeof(void *) #define VCHAN_SYSCTL_UNIT(x) ((int)(((intptr_t)(x) >> 2) & 0xfff) - 1) #define VCHAN_SYSCTL_DIR(x) ((int)((intptr_t)(x) & 0x3) - 1)