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freebsd-dev/sys/dev/sound/pcm/feeder.h

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rework feeder sytem to allow feeders in klds modify driver capability reporting format to list every audio format seperately- required for above and because we could not previously indicate that mono was unsupported. there should be no functional impact.
2000-08-20 22:18:56 +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
struct pcm_feederdesc {
u_int32_t type;
u_int32_t in, out;
u_int32_t flags;
int idx;
};
minor tweaks in speed and format setting routines. don't stop exploring the feeders if a feeder fails to initialise.
2001-04-08 20:20:52 +00:00
struct feeder_class {
KOBJ_CLASS_FIELDS;
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
int align;
struct pcm_feederdesc *desc;
void *data;
};
minor tweaks in speed and format setting routines. don't stop exploring the feeders if a feeder fails to initialise.
2001-04-08 20:20:52 +00:00
struct pcm_feeder {
KOBJ_FIELDS;
kobjify. this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
2000-12-18 01:36:41 +00:00
int align;
* 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 pcm_feederdesc *desc, desc_static;
kobjify. this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
2000-12-18 01:36:41 +00:00
void *data;
minor tweaks in speed and format setting routines. don't stop exploring the feeders if a feeder fails to initialise.
2001-04-08 20:20:52 +00:00
struct feeder_class *class;
make the feederchain builder work for recording. this has not been tested extensively as none of my testboxes have speakers or an audio source at present, but the chains built look correct and reading /dev/audio (ulaw, translated from signed 16 bit little-endian) gives values within the expected range for silence.
2002-01-23 05:10:56 +00:00
struct pcm_feeder *source, *parent;
* 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
kobjify. this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
2000-12-18 01:36:41 +00:00
};
rework feeder sytem to allow feeders in klds modify driver capability reporting format to list every audio format seperately- required for above and because we could not previously indicate that mono was unsupported. there should be no functional impact.
2000-08-20 22:18:56 +00:00
void feeder_register(void *p);
kobjify. this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
2000-12-18 01:36:41 +00:00
struct feeder_class *feeder_getclass(struct pcm_feederdesc *desc);
rework feeder sytem to allow feeders in klds modify driver capability reporting format to list every audio format seperately- required for above and because we could not previously indicate that mono was unsupported. there should be no functional impact.
2000-08-20 22:18:56 +00:00
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 chn_fmtchain(struct pcm_channel *c, u_int32_t *to);
int chn_addfeeder(struct pcm_channel *c, struct feeder_class *fc, struct pcm_feederdesc *desc);
int chn_removefeeder(struct pcm_channel *c);
struct pcm_feeder *chn_findfeeder(struct pcm_channel *c, u_int32_t type);
prepare for adding a rate conversion feeder. move format conversion feeders to feeder_fmt.c - no pertinent history so no repo-copy.
2000-09-23 22:11:32 +00:00
kobjify. this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
2000-12-18 01:36:41 +00:00
#define FEEDER_DECLARE(feeder, palign, pdata) \
static struct feeder_class feeder ## _class = { \
name: #feeder, \
methods: feeder ## _methods, \
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
size: sizeof(struct pcm_feeder), \
kobjify. this gives us several benefits, including: * easier extensibility- new optional methods can be added to ac97/mixer/channel classes without having to fixup every driver. * forward compatibility for drivers, provided no new mandatory methods are added.
2000-12-18 01:36:41 +00:00
align: palign, \
desc: feeder ## _desc, \
data: pdata, \
}; \
SYSINIT(feeder, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, feeder_register, &feeder ## _class);
prepare for adding a rate conversion feeder. move format conversion feeders to feeder_fmt.c - no pertinent history so no repo-copy.
2000-09-23 22:11:32 +00:00
#define FEEDER_ROOT 1
#define FEEDER_FMT 2
add a new method for retrieving feeder parameters
2001-05-27 14:49:14 +00:00
#define FEEDER_MIXER 3
#define FEEDER_RATE 4
#define FEEDER_FILTER 5
#define FEEDER_VOLUME 6
prepare for adding a rate conversion feeder. move format conversion feeders to feeder_fmt.c - no pertinent history so no repo-copy.
2000-09-23 22:11:32 +00:00
#define FEEDER_LAST FEEDER_VOLUME
#define FEEDRATE_SRC 1
#define FEEDRATE_DST 2
rework feeder sytem to allow feeders in klds modify driver capability reporting format to list every audio format seperately- required for above and because we could not previously indicate that mono was unsupported. there should be no functional impact.
2000-08-20 22:18:56 +00:00
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