87506547d2
1. Support wide range sampling rate, as low as 1hz up to int32 max
(which is, insane) through new feeder_rate, multiple precisions
choice (32/64 bit converter). This is indeed, quite insane, but it
does give us more room and flexibility. Plenty sysctl options to
adjust resampling characteristics.
2. Support 24/32 bit pcm format conversion through new, much improved,
simplified and optimized feeder_fmt.
Changes:
1. buffer.c / dsp.c / sound.h
* Support for 24/32 AFMT.
2. feeder_rate.c
* New implementation of sampling rate conversion with 32/64 bit
precision, 1 - int32max hz (which is, ridiculous, yet very
addictive). Much improved / smarter buffer management to not
cause any missing samples at the end of conversion process
* Tunable sysctls for various aspect:
hw.snd.feeder_rate_ratemin - minimum allowable sampling rate
(default to 4000)
hw.snd.feeder_rate_ratemax - maximum allowable sampling rate
(default to 1102500)
hw.snd.feeder_rate_buffersize - conversion buffer size
(default to 8192)
hw.snd.feeder_rate_scaling - scaling / conversion method
(please refer to the source for explaination). Default to
previous implementation type.
3. feeder_fmt.c / sound.h
* New implementation, support for 24/32bit conversion, optimized,
and simplified. Few routines has been removed (8 to xlaw, 16 to
8). It just doesn't make sense.
4. channel.c
* Support for 24/32 AFMT
* Fix wrong xruns increment, causing incorrect underruns statistic
while using vchans.
5. vchan.c
* Support for 24/32 AFMT
* Proper speed / rate detection especially for fixed rate ac97.
User can override it using kernel hint:
hint.pcm.<unit>.vchanrate="xxxx".
Notes / Issues:
* Virtual Channels (vchans)
Enabling vchans can really, really help to solve overrun
issues. This is quite understandable, because it operates
entirely within its own buffering system without relying on
hardware interrupt / state. Even if you don't need vchan,
just enable single channel can help much. Few soundcards
(notably via8233x, sblive, possibly others) have their own
hardware multi channel, and this is unfortunately beyond
vchan reachability.
* The arrival of 24/32 also come with a price. Applications
that can do 24/32bit playback need to be recompiled (notably
mplayer). Use (recompiled) mplayer to experiment / test /
debug this various format using -af format=fmt. Note that
24bit seeking in mplayer is a little bit broken, sometimes
can cause silence or loud static noise. Pausing / seeking
few times can solve this problem.
You don't have to rebuild world entirely for this. Simply
copy /usr/src/sys/sys/soundcard.h to
/usr/include/sys/soundcard.h would suffice. Few drivers also
need recompilation, and this can be done via
/usr/src/sys/modules/sound/.
Support for 24bit hardware playback is beyond the scope of
this changes. That would require spessific hardware driver
changes.
* Don't expect playing 9999999999hz is a wise decision. Be
reasonable. The new feeder_rate implemention provide
flexibility, not insanity. You can easily chew up your CPU
with this kind of mind instability. Please use proper
mosquito repellent device for this obvious cracked brain
attempt. As for testing purposes, you can use (again)
mplayer to generate / play with different sampling rate. Use
something like "mplayer -af resample=192000:0:0 <files>".
Submitted by: Ariff Abdullah <skywizard@MyBSD.org.my>
Tested by: multimedia@
318 lines
9.7 KiB
C
318 lines
9.7 KiB
C
/*-
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* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
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* Copyright by Hannu Savolainen 1995
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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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* $FreeBSD$
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*/
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/*
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* first, include kernel header files.
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*/
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#ifndef _OS_H_
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#define _OS_H_
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#ifdef _KERNEL
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/ioccom.h>
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#include <sys/filio.h>
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#include <sys/sockio.h>
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#include <sys/fcntl.h>
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#include <sys/tty.h>
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#include <sys/proc.h>
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#include <sys/kernel.h> /* for DATA_SET */
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#include <sys/module.h>
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#include <sys/conf.h>
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#include <sys/file.h>
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#include <sys/uio.h>
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#include <sys/syslog.h>
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#include <sys/errno.h>
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#include <sys/malloc.h>
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#include <sys/bus.h>
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#if __FreeBSD_version < 500000
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#include <sys/buf.h>
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#endif
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#include <machine/clock.h> /* for DELAY */
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#include <machine/resource.h>
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#include <machine/bus.h>
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#include <sys/rman.h>
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#include <sys/mman.h>
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#include <sys/poll.h>
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#include <sys/sbuf.h>
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#include <sys/soundcard.h>
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#include <sys/sysctl.h>
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#include <sys/kobj.h>
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#include <vm/vm.h>
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#include <vm/pmap.h>
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#undef USING_MUTEX
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#undef USING_DEVFS
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#if __FreeBSD_version > 500000
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#define USING_MUTEX
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#define USING_DEVFS
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#else
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#define INTR_TYPE_AV INTR_TYPE_TTY
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#define INTR_MPSAFE 0
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#endif
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#define SND_DYNSYSCTL
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struct pcm_channel;
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struct pcm_feeder;
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struct snd_dbuf;
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struct snd_mixer;
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#include <dev/sound/pcm/buffer.h>
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#include <dev/sound/pcm/channel.h>
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#include <dev/sound/pcm/feeder.h>
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#include <dev/sound/pcm/mixer.h>
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#define PCM_SOFTC_SIZE 512
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#define SND_STATUSLEN 64
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#define SOUND_MODVER 1
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#define SOUND_MINVER 1
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#define SOUND_PREFVER SOUND_MODVER
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#define SOUND_MAXVER 1
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/*
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PROPOSAL:
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each unit needs:
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status, mixer, dsp, dspW, audio, sequencer, midi-in, seq2, sndproc = 9 devices
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dspW and audio are deprecated.
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dsp needs min 64 channels, will give it 256
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minor = (unit << 20) + (dev << 16) + channel
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currently minor = (channel << 16) + (unit << 4) + dev
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nomenclature:
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/dev/pcmX/dsp.(0..255)
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/dev/pcmX/dspW
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/dev/pcmX/audio
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/dev/pcmX/status
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/dev/pcmX/mixer
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[etc.]
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*/
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#define PCMMINOR(x) (minor(x))
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#define PCMCHAN(x) ((PCMMINOR(x) & 0x00ff0000) >> 16)
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#define PCMUNIT(x) ((PCMMINOR(x) & 0x000000f0) >> 4)
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#define PCMDEV(x) (PCMMINOR(x) & 0x0000000f)
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#define PCMMKMINOR(u, d, c) ((((c) & 0xff) << 16) | (((u) & 0x0f) << 4) | ((d) & 0x0f))
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#define SD_F_SIMPLEX 0x00000001
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#define SD_F_AUTOVCHAN 0x00000002
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#define SD_F_PRIO_RD 0x10000000
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#define SD_F_PRIO_WR 0x20000000
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#define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR)
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#define SD_F_DIR_SET 0x40000000
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#define SD_F_TRANSIENT 0xf0000000
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/* many variables should be reduced to a range. Here define a macro */
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#define RANGE(var, low, high) (var) = \
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(((var)<(low))? (low) : ((var)>(high))? (high) : (var))
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#define DSP_BUFFSIZE (8192)
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/* make figuring out what a format is easier. got AFMT_STEREO already */
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#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE)
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#define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE)
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#define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
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#define AFMT_8BIT (AFMT_U8 | AFMT_S8)
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#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \
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AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
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#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \
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AFMT_S16_BE | AFMT_U16_BE)
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struct pcm_channel *fkchan_setup(device_t dev);
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int fkchan_kill(struct pcm_channel *c);
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#define SND_MAXVCHANS 255
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/*
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* Minor numbers for the sound driver.
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*
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* Unfortunately Creative called the codec chip of SB as a DSP. For this
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* reason the /dev/dsp is reserved for digitized audio use. There is a
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* device for true DSP processors but it will be called something else.
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* In v3.0 it's /dev/sndproc but this could be a temporary solution.
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*/
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#define SND_DEV_CTL 0 /* Control port /dev/mixer */
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#define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */
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#define SND_DEV_MIDIN 2 /* Raw midi access */
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#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
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#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
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#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
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#define SND_DEV_STATUS 6 /* /dev/sndstat */
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/* #7 not in use now. */
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#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
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#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
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#define SND_DEV_PSS SND_DEV_SNDPROC /* ? */
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#define SND_DEV_NORESET 10
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#define SND_DEV_DSPREC 11 /* recording channels */
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#define DSP_DEFAULT_SPEED 8000
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#define ON 1
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#define OFF 0
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extern int pcm_veto_load;
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extern int snd_unit;
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extern devclass_t pcm_devclass;
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/*
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* some macros for debugging purposes
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* DDB/DEB to enable/disable debugging stuff
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* BVDDB to enable debugging when bootverbose
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*/
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#define BVDDB(x) if (bootverbose) x
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#ifndef DEB
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#define DEB(x)
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#endif
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SYSCTL_DECL(_hw_snd);
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struct sysctl_ctx_list *snd_sysctl_tree(device_t dev);
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struct sysctl_oid *snd_sysctl_tree_top(device_t dev);
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struct pcm_channel *pcm_getfakechan(struct snddev_info *d);
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struct pcm_channel *pcm_chnalloc(struct snddev_info *d, int direction, pid_t pid, int chnum);
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int pcm_chnrelease(struct pcm_channel *c);
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int pcm_chnref(struct pcm_channel *c, int ref);
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int pcm_inprog(struct snddev_info *d, int delta);
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struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, void *devinfo);
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int pcm_chn_destroy(struct pcm_channel *ch);
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int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch);
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int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch);
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int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo);
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unsigned int pcm_getbuffersize(device_t dev, unsigned int min, unsigned int deflt, unsigned int max);
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int pcm_register(device_t dev, void *devinfo, int numplay, int numrec);
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int pcm_unregister(device_t dev);
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int pcm_setstatus(device_t dev, char *str);
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u_int32_t pcm_getflags(device_t dev);
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void pcm_setflags(device_t dev, u_int32_t val);
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void *pcm_getdevinfo(device_t dev);
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int snd_setup_intr(device_t dev, struct resource *res, int flags,
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driver_intr_t hand, void *param, void **cookiep);
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void *snd_mtxcreate(const char *desc, const char *type);
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void snd_mtxfree(void *m);
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void snd_mtxassert(void *m);
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#define snd_mtxlock(m) mtx_lock(m)
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#define snd_mtxunlock(m) mtx_unlock(m)
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int sysctl_hw_snd_vchans(SYSCTL_HANDLER_ARGS);
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typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose);
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int sndstat_register(device_t dev, char *str, sndstat_handler handler);
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int sndstat_registerfile(char *str);
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int sndstat_unregister(device_t dev);
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int sndstat_unregisterfile(char *str);
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int sndstat_busy(void);
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#define SND_DECLARE_FILE(version) \
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_SND_DECLARE_FILE(__LINE__, version)
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#define _SND_DECLARE_FILE(uniq, version) \
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__SND_DECLARE_FILE(uniq, version)
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#define __SND_DECLARE_FILE(uniq, version) \
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static char sndstat_vinfo[] = version; \
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SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \
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SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo);
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/* usage of flags in device config entry (config file) */
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#define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */
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#define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */
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/* ought to be made obsolete but still used by mss */
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#define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */
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#define DV_F_DEV_SHIFT 8 /* force device type/class */
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#define PCM_DEBUG_MTX
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/*
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* this is rather kludgey- we need to duplicate these struct def'ns from sound.c
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* so that the macro versions of pcm_{,un}lock can dereference them.
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* we also have to do this now makedev() has gone away.
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*/
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struct snddev_channel {
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SLIST_ENTRY(snddev_channel) link;
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struct pcm_channel *channel;
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int chan_num;
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struct cdev *dsp_devt;
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struct cdev *dspW_devt;
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struct cdev *audio_devt;
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struct cdev *dspr_devt;
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};
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struct snddev_info {
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SLIST_HEAD(, snddev_channel) channels;
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struct pcm_channel *fakechan;
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unsigned devcount, playcount, reccount, vchancount;
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unsigned flags;
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int inprog;
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unsigned int bufsz;
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void *devinfo;
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device_t dev;
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char status[SND_STATUSLEN];
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struct sysctl_ctx_list sysctl_tree;
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struct sysctl_oid *sysctl_tree_top;
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struct mtx *lock;
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struct cdev *mixer_dev;
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};
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#ifdef PCM_DEBUG_MTX
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#define pcm_lock(d) mtx_lock(((struct snddev_info *)(d))->lock)
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#define pcm_unlock(d) mtx_unlock(((struct snddev_info *)(d))->lock)
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#else
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void pcm_lock(struct snddev_info *d);
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void pcm_unlock(struct snddev_info *d);
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#endif
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#ifdef KLD_MODULE
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#define PCM_KLDSTRING(a) ("kld " # a)
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#else
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#define PCM_KLDSTRING(a) ""
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#endif
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#endif /* _KERNEL */
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#endif /* _OS_H_ */
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