5cfcc28b60
* Add missing A_LAW / MU_LAW format.
- feeder.c
* Fix format chain building. Traverse backward instead of forward
during format chainning.
- feeder_fmt.c
* Add missing alaw/mulaw converter.
* Add 16 -> 24/32bit converter.
* whitespace cleanup.
- sound.h
* alaw / mulaw are member of AFMT_8BIT.
Submitted by: Ariff Abdullah <skywizard@MyBSD.org.my>
164 lines
4.1 KiB
C
164 lines
4.1 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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#include <dev/sound/pcm/sound.h>
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SND_DECLARE_FILE("$FreeBSD$");
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static u_int32_t fk_fmt[] = {
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AFMT_MU_LAW,
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AFMT_STEREO | AFMT_MU_LAW,
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AFMT_A_LAW,
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AFMT_STEREO | AFMT_A_LAW,
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AFMT_U8,
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AFMT_STEREO | AFMT_U8,
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AFMT_S8,
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AFMT_STEREO | AFMT_S8,
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AFMT_S16_LE,
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AFMT_STEREO | AFMT_S16_LE,
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AFMT_U16_LE,
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AFMT_STEREO | AFMT_U16_LE,
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AFMT_S16_BE,
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AFMT_STEREO | AFMT_S16_BE,
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AFMT_U16_BE,
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AFMT_STEREO | AFMT_U16_BE,
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AFMT_S24_LE,
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AFMT_STEREO | AFMT_S24_LE,
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AFMT_U24_LE,
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AFMT_STEREO | AFMT_U24_LE,
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AFMT_S24_BE,
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AFMT_STEREO | AFMT_S24_BE,
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AFMT_U24_BE,
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AFMT_STEREO | AFMT_U24_BE,
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AFMT_S32_LE,
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AFMT_STEREO | AFMT_S32_LE,
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AFMT_U32_LE,
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AFMT_STEREO | AFMT_U32_LE,
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AFMT_S32_BE,
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AFMT_STEREO | AFMT_S32_BE,
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AFMT_U32_BE,
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AFMT_STEREO | AFMT_U32_BE,
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0
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};
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static struct pcmchan_caps fk_caps = {0, 1000000, fk_fmt, 0};
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#define FKBUFSZ 4096
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static char fakebuf[FKBUFSZ];
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/* channel interface */
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static void *
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fkchan_init(kobj_t obj, void *devinfo, struct snd_dbuf *b, struct pcm_channel *c, int dir)
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{
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sndbuf_setup(b, fakebuf, FKBUFSZ);
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return (void *)0xbabef00d;
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}
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static int
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fkchan_free(kobj_t obj, void *data)
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{
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return 0;
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}
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static int
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fkchan_setformat(kobj_t obj, void *data, u_int32_t format)
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{
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return 0;
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}
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static int
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fkchan_setspeed(kobj_t obj, void *data, u_int32_t speed)
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{
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return speed;
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}
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static int
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fkchan_setblocksize(kobj_t obj, void *data, u_int32_t blocksize)
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{
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return blocksize;
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}
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static int
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fkchan_trigger(kobj_t obj, void *data, int go)
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{
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return 0;
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}
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static int
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fkchan_getptr(kobj_t obj, void *data)
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{
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return 0;
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}
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static struct pcmchan_caps *
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fkchan_getcaps(kobj_t obj, void *data)
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{
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return &fk_caps;
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}
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static kobj_method_t fkchan_methods[] = {
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KOBJMETHOD(channel_init, fkchan_init),
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KOBJMETHOD(channel_free, fkchan_free),
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KOBJMETHOD(channel_setformat, fkchan_setformat),
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KOBJMETHOD(channel_setspeed, fkchan_setspeed),
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KOBJMETHOD(channel_setblocksize, fkchan_setblocksize),
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KOBJMETHOD(channel_trigger, fkchan_trigger),
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KOBJMETHOD(channel_getptr, fkchan_getptr),
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KOBJMETHOD(channel_getcaps, fkchan_getcaps),
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{ 0, 0 }
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};
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CHANNEL_DECLARE(fkchan);
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struct pcm_channel *
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fkchan_setup(device_t dev)
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{
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struct snddev_info *d = device_get_softc(dev);
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struct pcm_channel *c;
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c = malloc(sizeof(*c), M_DEVBUF, M_WAITOK);
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c->methods = kobj_create(&fkchan_class, M_DEVBUF, M_WAITOK);
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c->parentsnddev = d;
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/*
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* Fake channel is such a blessing in disguise. Using this,
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* we can keep track prefered virtual channel speed without
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* querying kernel hint repetitively (see vchan_create / vchan.c).
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*/
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c->speed = 0;
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snprintf(c->name, CHN_NAMELEN, "%s:fake", device_get_nameunit(dev));
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return c;
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}
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int
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fkchan_kill(struct pcm_channel *c)
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{
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kobj_delete(c->methods, M_DEVBUF);
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c->methods = NULL;
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free(c, M_DEVBUF);
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return 0;
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}
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