Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/ipfilter/@/dev/sound/pcm/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/ipfilter/@/dev/sound/pcm/channel_if.m |
#- # KOBJ # # Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> # Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 # Copyright (c) 2000 Cameron Grant <cg@FreeBSD.org> # 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: release/9.1.0/sys/dev/sound/pcm/channel_if.m 193640 2009-06-07 19:12:08Z ariff $ # #include <dev/sound/pcm/sound.h> INTERFACE channel; CODE { static int channel_noreset(kobj_t obj, void *data) { return 0; } static int channel_noresetdone(kobj_t obj, void *data) { return 0; } static int channel_nofree(kobj_t obj, void *data) { return 1; } static u_int32_t channel_nogetptr(kobj_t obj, void *data) { return 0; } static int channel_nonotify(kobj_t obj, void *data, u_int32_t changed) { return 0; } static int channel_nogetpeaks(kobj_t obj, void *data, int *lpeak, int *rpeak) { return -1; } static int channel_nogetrates(kobj_t obj, void *data, int **rates) { *rates = NULL; return 0; } static int channel_nosetfragments(kobj_t obj, void *data, u_int32_t blocksize, u_int32_t blockcount) { return ENOTSUP; } static struct pcmchan_matrix * channel_nogetmatrix(kobj_t obj, void *data, u_int32_t format) { format = feeder_matrix_default_format(format); return (feeder_matrix_format_map(format)); } static int channel_nosetmatrix(kobj_t obj, void *data, struct pcmchan_matrix *m) { return ENOTSUP; } }; METHOD void* init { kobj_t obj; void *devinfo; struct snd_dbuf *b; struct pcm_channel *c; int dir; }; METHOD int free { kobj_t obj; void *data; } DEFAULT channel_nofree; METHOD int reset { kobj_t obj; void *data; } DEFAULT channel_noreset; METHOD int resetdone { kobj_t obj; void *data; } DEFAULT channel_noresetdone; METHOD int setformat { kobj_t obj; void *data; u_int32_t format; }; METHOD u_int32_t setspeed { kobj_t obj; void *data; u_int32_t speed; }; METHOD u_int32_t setblocksize { kobj_t obj; void *data; u_int32_t blocksize; }; METHOD int setfragments { kobj_t obj; void *data; u_int32_t blocksize; u_int32_t blockcount; } DEFAULT channel_nosetfragments; METHOD int trigger { kobj_t obj; void *data; int go; }; METHOD u_int32_t getptr { kobj_t obj; void *data; } DEFAULT channel_nogetptr; METHOD struct pcmchan_caps* getcaps { kobj_t obj; void *data; }; METHOD int notify { kobj_t obj; void *data; u_int32_t changed; } DEFAULT channel_nonotify; /** * @brief Retrieve channel peak values * * This function is intended to obtain peak volume values for samples * played/recorded on a channel. Values are on a linear scale from 0 to * 32767. If the channel is monaural, a single value should be recorded * in @c lpeak. * * If hardware support isn't available, the SNDCTL_DSP_GET[IO]PEAKS * operation should return EINVAL. However, we may opt to provide * software support that the user may toggle via sysctl/mixext. * * @param obj standard kobj object (usually @c channel->methods) * @param data driver-specific data (usually @c channel->devinfo) * @param lpeak pointer to store left peak level * @param rpeak pointer to store right peak level * * @retval -1 Error; usually operation isn't supported. * @retval 0 success */ METHOD int getpeaks { kobj_t obj; void *data; int *lpeak; int *rpeak; } DEFAULT channel_nogetpeaks; /** * @brief Retrieve discrete supported sample rates * * Some cards operate at fixed rates, and this call is intended to retrieve * those rates primarily for when in-kernel rate adjustment is undesirable * (e.g., application wants direct DMA access after setting a channel to run * "uncooked"). * * The parameter @c rates is a double pointer which will be reset to * point to an array of supported sample rates. The number of elements * in the array is returned to the caller. * * @param obj standard kobj object (usually @c channel->methods) * @param data driver-specific data (usually @c channel->devinfo) * @param rates rate array pointer * * @return Number of rates in the array */ METHOD int getrates { kobj_t obj; void *data; int **rates; } DEFAULT channel_nogetrates; METHOD struct pcmchan_matrix * getmatrix { kobj_t obj; void *data; u_int32_t format; } DEFAULT channel_nogetmatrix; METHOD int setmatrix { kobj_t obj; void *data; struct pcmchan_matrix *m; } DEFAULT channel_nosetmatrix;