mirror/freebsd
1
0
Fork 0
mirror of https://git.FreeBSD.org/src.git synced 2024-12-20 11:11:24 +00:00
Code Issues Releases Activity
614be65181
freebsd/sys/dev/sound/pcm/buffer.h

97 lines
4.4 KiB
C
Raw Normal View History

update code dealing with snd_dbuf objects to do so using a functional interface modify chn_setblocksize() to pick a default soft-blocksize appropriate to the sample rate and format in use. it will aim for a power of two size small enough to generate block sizes of at most 20ms. it will also set the hard-blocksize taking into account rate/format conversions in use. update drivers to implement setblocksize correctly: updated, tested: sb16, emu10k1, maestro, solo updated, untested: ad1816, ess, mss, sb8, csa not updated: ds1, es137x, fm801, neomagic, t4dwave, via82c686 i lack hardware to test: ad1816, csa, fm801, neomagic others will be updated/tested in the next few days.
2000-12-23 03:16:13 +00:00
/*
* Copyright (c) 1999 Cameron Grant <gandalf@vilnya.demon.co.uk>
* 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.
*
* $FreeBSD$
*/
mega-commit. this introduces a new buffering mechanism which results in dramatic simplification of the channel manager. as several structures have changed, we take the opportunity to move their definitions into the source files where they are used, make them private and de-typedef them. the sound drivers are updated to use snd_setup_intr instead of bus_setup_intr, and to comply with the de-typedefed structures. the ac97, mixer and channel layers have been updated with finegrained locking, as have some drivers- not all though. the rest will follow soon.
2001-03-24 23:10:29 +00:00
#define ISA_DMA(b) (sndbuf_getflags((b)) & SNDBUF_F_ISADMA)
#define SNDBUF_LOCKASSERT(b)
#define SNDBUF_F_ISADMA 0x00000001
#define SNDBUF_F_XRUN 0x00000002
#define SNDBUF_F_RUNNING 0x00000004
* improve error handling * be more specific in verbose boot messages * allow the feeder subsystem to veto pcm* attaching if there is an error initialising the root feeder * don't free/malloc a new tmpbuf when resizing a snd_dbuf to the same size as it currently is * store the feeder description in the feeder structure instead of mallocing space for it
2002-01-26 22:13:24 +00:00
struct snd_dbuf *sndbuf_create(device_t dev, char *drv, char *desc);
mega-commit. this introduces a new buffering mechanism which results in dramatic simplification of the channel manager. as several structures have changed, we take the opportunity to move their definitions into the source files where they are used, make them private and de-typedef them. the sound drivers are updated to use snd_setup_intr instead of bus_setup_intr, and to comply with the de-typedefed structures. the ac97, mixer and channel layers have been updated with finegrained locking, as have some drivers- not all though. the rest will follow soon.
2001-03-24 23:10:29 +00:00
void sndbuf_destroy(struct snd_dbuf *b);
void sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what);
int sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size);
int sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size);
void sndbuf_free(struct snd_dbuf *b);
int sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
int sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz);
void sndbuf_reset(struct snd_dbuf *b);
void sndbuf_clear(struct snd_dbuf *b, unsigned int length);
don't erase info in sndbuf_setup() set free'd pointers to NULL in sndbuf_free() add a new function
2001-05-27 14:39:34 +00:00
void sndbuf_fillsilence(struct snd_dbuf *b);
mega-commit. this introduces a new buffering mechanism which results in dramatic simplification of the channel manager. as several structures have changed, we take the opportunity to move their definitions into the source files where they are used, make them private and de-typedef them. the sound drivers are updated to use snd_setup_intr instead of bus_setup_intr, and to comply with the de-typedefed structures. the ac97, mixer and channel layers have been updated with finegrained locking, as have some drivers- not all though. the rest will follow soon.
2001-03-24 23:10:29 +00:00
u_int32_t sndbuf_getfmt(struct snd_dbuf *b);
int sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt);
unsigned int sndbuf_getspd(struct snd_dbuf *b);
void sndbuf_setspd(struct snd_dbuf *b, unsigned int spd);
unsigned int sndbuf_getbps(struct snd_dbuf *b);
void *sndbuf_getbuf(struct snd_dbuf *b);
void *sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs);
unsigned int sndbuf_getsize(struct snd_dbuf *b);
unsigned int sndbuf_getmaxsize(struct snd_dbuf *b);
unsigned int sndbuf_getalign(struct snd_dbuf *b);
unsigned int sndbuf_getblkcnt(struct snd_dbuf *b);
void sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt);
unsigned int sndbuf_getblksz(struct snd_dbuf *b);
void sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz);
unsigned int sndbuf_runsz(struct snd_dbuf *b);
void sndbuf_setrun(struct snd_dbuf *b, int go);
struct selinfo *sndbuf_getsel(struct snd_dbuf *b);
unsigned int sndbuf_getxrun(struct snd_dbuf *b);
void sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt);
unsigned int sndbuf_gethwptr(struct snd_dbuf *b);
void sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr);
unsigned int sndbuf_getfree(struct snd_dbuf *b);
unsigned int sndbuf_getfreeptr(struct snd_dbuf *b);
unsigned int sndbuf_getready(struct snd_dbuf *b);
unsigned int sndbuf_getreadyptr(struct snd_dbuf *b);
unsigned int sndbuf_getblocks(struct snd_dbuf *b);
unsigned int sndbuf_getprevblocks(struct snd_dbuf *b);
unsigned int sndbuf_gettotal(struct snd_dbuf *b);
void sndbuf_updateprevtotal(struct snd_dbuf *b);
int sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count);
int sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count);
int sndbuf_uiomove(struct snd_dbuf *b, struct uio *uio, unsigned int count);
int sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count);
u_int32_t sndbuf_getflags(struct snd_dbuf *b);
void sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on);
int sndbuf_isadmasetup(struct snd_dbuf *b, struct resource *drq);
int sndbuf_isadmasetdir(struct snd_dbuf *b, int dir);
void sndbuf_isadma(struct snd_dbuf *b, int go);
int sndbuf_isadmaptr(struct snd_dbuf *b);
void sndbuf_isadmabounce(struct snd_dbuf *b);
update code dealing with snd_dbuf objects to do so using a functional interface modify chn_setblocksize() to pick a default soft-blocksize appropriate to the sample rate and format in use. it will aim for a power of two size small enough to generate block sizes of at most 20ms. it will also set the hard-blocksize taking into account rate/format conversions in use. update drivers to implement setblocksize correctly: updated, tested: sb16, emu10k1, maestro, solo updated, untested: ad1816, ess, mss, sb8, csa not updated: ds1, es137x, fm801, neomagic, t4dwave, via82c686 i lack hardware to test: ad1816, csa, fm801, neomagic others will be updated/tested in the next few days.
2000-12-23 03:16:13 +00:00
Reference in New Issue Copy Permalink