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freebsd-dev/sys/dev/sound/pcm/sound.h
Ariff Abdullah a580b31a54 Welcome to Once-a-year Sound Mega-Commit. Enjoy numerous updates and fixes 
in every sense.

General
-------

- Multichannel safe, endian safe, format safe
   * Large part of critical pcm filters such as vchan.c, feeder_rate.c,
     feeder_volume.c, feeder_fmt.c and feeder.c has been rewritten so that
     using them does not cause the pcm data to be converted to 16bit little
     endian.
   * Macrosses for accessing pcm data safely are defined within sound.h in
     the form of PCM_READ_* / PCM_WRITE_*
   * Currently, most of them are probably limited for mono/stereo handling,
     but the future addition of true multichannel will be much easier.

- Low latency operation
  * Well, this require lot more works to do not just within sound driver,
    but we're heading towards right direction. Buffer/block sizing within
    channel.c is rewritten to calculate precise allocation for various
    combination of sample/data/rate size. As a result, applying correct
    SNDCTL_DSP_POLICY value will achive expected latency behaviour simmilar
    to what commercial 4front driver do.
  * Signal handling fix. ctrl+c of "cat /dev/zero > /dev/dsp" does not
    result long delay.
  * Eliminate sound truncation if the sound data is too small.
    DIY:
      1) Download / extract
         http://people.freebsd.org/~ariff/lowlatency/shortfiles.tar.gz
      2) Do a comparison between "cat state*.au > /dev/dsp" and
         "for x in state*.au ; do cat $x > /dev/dsp ; done"
         - there should be no "perceivable" differences.
    Double close for PR kern/31445.

  CAVEAT: Low latency come with (unbearable) price especially for poorly
          written applications. Applications that trying to act smarter
	  by requesting (wrong) blocksize/blockcount will suffer the most.
	  Fixup samples/patches can be found at:
	  http://people.freebsd.org/~ariff/ports/

- Switch minimum/maximum sampling rate limit to "1" and "2016000" (48k * 42)
  due to closer compatibility with 4front driver.
  Discussed with: marcus@ (long time ago?)

- All driver specific sysctls in the form of "hw.snd.pcm%d.*" have been
  moved to their own dev sysctl nodes, notably:
  hw.snd.pcm%d.vchans -> dev.pcm.%d.vchans
  Bump __FreeBSD_version.

Driver specific
---------------

- Ditto for sysctls.

- snd_atiixp, snd_es137x, snd_via8233, snd_hda
  * Numerous cleanups and fixes.
  * _EXPERIMENTAL_ polling mode support using simple callout_* mechanisme.
   This was intended for pure debugging and latency measurement, but proven
   good enough in few unexpected and rare cases (such as problematic shared
   IRQ with GIANT devices - USB). Polling can be enabled/disabled through
   dev.pcm.0.polling. Disabled by default.

- snd_ich
  * Fix possible overflow during speed calibration. Delay final
    initialization (pcm_setstatus) after calibration finished.
    PR: kern/100169
    Tested by: Kevin Overman <oberman@es.net>
  * Inverted EAPD for few Nec VersaPro.
    PR: kern/104715
    Submitted by: KAWATA Masahiko <kawata@mta.biglobe.ne.jp>

Thanks to various people, notably Joel Dahl, Yuriy Tsibizov, Kevin Oberman,
those at #freebsd-azalia @ freenode and others for testing.

Joel Dahl will do the manpage update.
2006-11-26 12:24:06 +00:00

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/*-
* Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
* Copyright by Hannu Savolainen 1995
* 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.
*
* $FreeBSD$
*/
/*
* first, include kernel header files.
*/
#ifndef _OS_H_
#define _OS_H_
#ifdef _KERNEL
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/ioccom.h>
#include <sys/filio.h>
#include <sys/sockio.h>
#include <sys/fcntl.h>
#include <sys/tty.h>
#include <sys/proc.h>
#include <sys/kernel.h> /* for DATA_SET */
#include <sys/module.h>
#include <sys/conf.h>
#include <sys/file.h>
#include <sys/uio.h>
#include <sys/syslog.h>
#include <sys/errno.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#if __FreeBSD_version < 500000
#include <sys/buf.h>
#endif
#include <machine/resource.h>
#include <machine/bus.h>
#include <sys/rman.h>
#include <sys/limits.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <sys/sbuf.h>
#include <sys/soundcard.h>
#include <sys/sysctl.h>
#include <sys/kobj.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#undef USING_MUTEX
#undef USING_DEVFS
#if __FreeBSD_version > 500000
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/condvar.h>
#define USING_MUTEX
#define USING_DEVFS
#else
#define INTR_TYPE_AV INTR_TYPE_TTY
#define INTR_MPSAFE 0
#endif
#define SND_DYNSYSCTL
struct pcm_channel;
struct pcm_feeder;
struct snd_dbuf;
struct snd_mixer;
#include <dev/sound/pcm/buffer.h>
#include <dev/sound/pcm/channel.h>
#include <dev/sound/pcm/feeder.h>
#include <dev/sound/pcm/mixer.h>
#include <dev/sound/pcm/dsp.h>
#define PCM_SOFTC_SIZE 512
#define SND_STATUSLEN 64
#define SOUND_MODVER 1
#define SOUND_MINVER 1
#define SOUND_PREFVER SOUND_MODVER
#define SOUND_MAXVER 1
/*
PROPOSAL:
each unit needs:
status, mixer, dsp, dspW, audio, sequencer, midi-in, seq2, sndproc = 9 devices
dspW and audio are deprecated.
dsp needs min 64 channels, will give it 256
minor = (unit << 20) + (dev << 16) + channel
currently minor = (channel << 16) + (unit << 4) + dev
nomenclature:
/dev/pcmX/dsp.(0..255)
/dev/pcmX/dspW
/dev/pcmX/audio
/dev/pcmX/status
/dev/pcmX/mixer
[etc.]
*/
#define PCMMAXCHAN 0xff
#define PCMMAXDEV 0x0f
#define PCMMAXUNIT 0x0f
#define PCMMINOR(x) (minor(x))
#define PCMCHAN(x) ((PCMMINOR(x) >> 16) & PCMMAXCHAN)
#define PCMUNIT(x) ((PCMMINOR(x) >> 4) & PCMMAXUNIT)
#define PCMDEV(x) (PCMMINOR(x) & PCMMAXDEV)
#define PCMMKMINOR(u, d, c) ((((c) & PCMMAXCHAN) << 16) | \
(((u) & PCMMAXUNIT) << 4) | ((d) & PCMMAXDEV))
#define SD_F_SIMPLEX 0x00000001
#define SD_F_AUTOVCHAN 0x00000002
#define SD_F_SOFTPCMVOL 0x00000004
#define SD_F_PRIO_RD 0x10000000
#define SD_F_PRIO_WR 0x20000000
#define SD_F_PRIO_SET (SD_F_PRIO_RD | SD_F_PRIO_WR)
#define SD_F_DIR_SET 0x40000000
#define SD_F_TRANSIENT 0xf0000000
/* many variables should be reduced to a range. Here define a macro */
#define RANGE(var, low, high) (var) = \
(((var)<(low))? (low) : ((var)>(high))? (high) : (var))
#define DSP_BUFFSIZE (8192)
/*
* Macros for reading/writing PCM sample / int values from bytes array.
* Since every process is done using signed integer (and to make our life
* less miserable), unsigned sample will be converted to its signed
* counterpart and restored during writing back. To avoid overflow,
* we truncate 32bit (and only 32bit) samples down to 24bit (see below
* for the reason), unless PCM_USE_64BIT_ARITH is defined.
*/
/*
* Automatically turn on 64bit arithmetic on suitable archs
* (amd64 64bit, ia64, etc..) for wider 32bit samples / integer processing.
*/
#if LONG_BIT >= 64
#undef PCM_USE_64BIT_ARITH
#define PCM_USE_64BIT_ARITH 1
#else
#if 0
#undef PCM_USE_64BIT_ARITH
#define PCM_USE_64BIT_ARITH 1
#endif
#endif
#ifdef PCM_USE_64BIT_ARITH
typedef int64_t intpcm_t;
#else
typedef int32_t intpcm_t;
#endif
/* 32bit fixed point shift */
#define PCM_FXSHIFT 8
#define PCM_S8_MAX 0x7f
#define PCM_S8_MIN -0x80
#define PCM_S16_MAX 0x7fff
#define PCM_S16_MIN -0x8000
#define PCM_S24_MAX 0x7fffff
#define PCM_S24_MIN -0x800000
#ifdef PCM_USE_64BIT_ARITH
#if LONG_BIT >= 64
#define PCM_S32_MAX 0x7fffffffL
#define PCM_S32_MIN -0x80000000L
#else
#define PCM_S32_MAX 0x7fffffffLL
#define PCM_S32_MIN -0x80000000LL
#endif
#else
#define PCM_S32_MAX 0x7fffffff
#define PCM_S32_MIN (-0x7fffffff - 1)
#endif
/* Bytes-per-sample definition */
#define PCM_8_BPS 1
#define PCM_16_BPS 2
#define PCM_24_BPS 3
#define PCM_32_BPS 4
#if BYTE_ORDER == LITTLE_ENDIAN
#define PCM_READ_S16_LE(b8) *((int16_t *)(b8))
#define _PCM_READ_S32_LE(b8) *((int32_t *)(b8))
#define PCM_READ_S16_BE(b8) \
((int32_t)((b8)[1] | ((int8_t)((b8)[0])) << 8))
#define _PCM_READ_S32_BE(b8) \
((int32_t)((b8)[3] | (b8)[2] << 8 | (b8)[1] << 16 | \
((int8_t)((b8)[0])) << 24))
#define PCM_WRITE_S16_LE(b8, val) *((int16_t *)(b8)) = (val)
#define _PCM_WRITE_S32_LE(b8, val) *((int32_t *)(b8)) = (val)
#define PCM_WRITE_S16_BE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[1] = val; \
b8[0] = val >> 8; \
} while(0)
#define _PCM_WRITE_S32_BE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[3] = val; \
b8[2] = val >> 8; \
b8[1] = val >> 16; \
b8[0] = val >> 24; \
} while(0)
#define PCM_READ_U16_LE(b8) ((int16_t)(*((uint16_t *)(b8)) ^ 0x8000))
#define _PCM_READ_U32_LE(b8) ((int32_t)(*((uint32_t *)(b8)) ^ 0x80000000))
#define PCM_READ_U16_BE(b8) \
((int32_t)((b8)[1] | ((int8_t)((b8)[0] ^ 0x80)) << 8))
#define _PCM_READ_U32_BE(b8) \
((int32_t)((b8)[3] | (b8)[2] << 8 | (b8)[1] << 16 | \
((int8_t)((b8)[0] ^ 0x80)) << 24))
#define PCM_WRITE_U16_LE(b8, val) *((uint16_t *)(b8)) = (val) ^ 0x8000
#define _PCM_WRITE_U32_LE(b8, val) *((uint32_t *)(b8)) = (val) ^ 0x80000000
#define PCM_WRITE_U16_BE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[1] = val; \
b8[0] = (val >> 8) ^ 0x80; \
} while(0)
#define _PCM_WRITE_U32_BE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[3] = val; \
b8[2] = val >> 8; \
b8[1] = val >> 16; \
b8[0] = (val >> 24) ^ 0x80; \
} while(0)
#else /* !LITTLE_ENDIAN */
#define PCM_READ_S16_LE(b8) \
((int32_t)((b8)[0] | ((int8_t)((b8)[1])) << 8))
#define _PCM_READ_S32_LE(b8) \
((int32_t)((b8)[0] | (b8)[1] << 8 | (b8)[2] << 16 | \
((int8_t)((b8)[3])) << 24))
#define PCM_READ_S16_BE(b8) *((int16_t *)(b8))
#define _PCM_READ_S32_BE(b8) *((int32_t *)(b8))
#define PCM_WRITE_S16_LE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[0] = val; \
b8[1] = val >> 8; \
} while(0)
#define _PCM_WRITE_S32_LE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[0] = val; \
b8[1] = val >> 8; \
b8[2] = val >> 16; \
b8[3] = val >> 24; \
} while(0)
#define PCM_WRITE_S16_BE(b8, val) *((int16_t *)(b8)) = (val)
#define _PCM_WRITE_S32_BE(b8, val) *((int32_t *)(b8)) = (val)
#define PCM_READ_U16_LE(b8) \
((int32_t)((b8)[0] | ((int8_t)((b8)[1] ^ 0x80)) << 8))
#define _PCM_READ_U32_LE(b8) \
((int32_t)((b8)[0] | (b8)[1] << 8 | (b8)[2] << 16 | \
((int8_t)((b8)[3] ^ 0x80)) << 24))
#define PCM_READ_U16_BE(b8) ((int16_t)(*((uint16_t *)(b8)) ^ 0x8000))
#define _PCM_READ_U32_BE(b8) ((int32_t)(*((uint32_t *)(b8)) ^ 0x80000000))
#define PCM_WRITE_U16_LE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[0] = val; \
b8[1] = (val >> 8) ^ 0x80; \
} while(0)
#define _PCM_WRITE_U32_LE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[0] = val; \
b8[1] = val >> 8; \
b8[2] = val >> 16; \
b8[3] = (val >> 24) ^ 0x80; \
} while(0)
#define PCM_WRITE_U16_BE(b8, val) *((uint16_t *)(b8)) = (val) ^ 0x8000
#define _PCM_WRITE_U32_BE(b8, val) *((uint32_t *)(b8)) = (val) ^ 0x80000000
#endif
#define PCM_READ_S24_LE(b8) \
((int32_t)((b8)[0] | (b8)[1] << 8 | ((int8_t)((b8)[2])) << 16))
#define PCM_READ_S24_BE(b8) \
((int32_t)((b8)[2] | (b8)[1] << 8 | ((int8_t)((b8)[0])) << 16))
#define PCM_WRITE_S24_LE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[0] = val; \
b8[1] = val >> 8; \
b8[2] = val >> 16; \
} while(0)
#define PCM_WRITE_S24_BE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[2] = val; \
b8[1] = val >> 8; \
b8[0] = val >> 16; \
} while(0)
#define PCM_READ_U24_LE(b8) \
((int32_t)((b8)[0] | (b8)[1] << 8 | \
((int8_t)((b8)[2] ^ 0x80)) << 16))
#define PCM_READ_U24_BE(b8) \
((int32_t)((b8)[2] | (b8)[1] << 8 | \
((int8_t)((b8)[0] ^ 0x80)) << 16))
#define PCM_WRITE_U24_LE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[0] = val; \
b8[1] = val >> 8; \
b8[2] = (val >> 16) ^ 0x80; \
} while(0)
#define PCM_WRITE_U24_BE(bb8, vval) do { \
int32_t val = (vval); \
uint8_t *b8 = (bb8); \
b8[2] = val; \
b8[1] = val >> 8; \
b8[0] = (val >> 16) ^ 0x80; \
} while(0)
#ifdef PCM_USE_64BIT_ARITH
#define PCM_READ_S32_LE(b8) _PCM_READ_S32_LE(b8)
#define PCM_READ_S32_BE(b8) _PCM_READ_S32_BE(b8)
#define PCM_WRITE_S32_LE(b8, val) _PCM_WRITE_S32_LE(b8, val)
#define PCM_WRITE_S32_BE(b8, val) _PCM_WRITE_S32_BE(b8, val)
#define PCM_READ_U32_LE(b8) _PCM_READ_U32_LE(b8)
#define PCM_READ_U32_BE(b8) _PCM_READ_U32_BE(b8)
#define PCM_WRITE_U32_LE(b8, val) _PCM_WRITE_U32_LE(b8, val)
#define PCM_WRITE_U32_BE(b8, val) _PCM_WRITE_U32_BE(b8, val)
#else /* !PCM_USE_64BIT_ARITH */
/*
* 24bit integer ?!? This is quite unfortunate, eh? Get the fact straight:
* Dynamic range for:
* 1) Human =~ 140db
* 2) 16bit = 96db (close enough)
* 3) 24bit = 144db (perfect)
* 4) 32bit = 196db (way too much)
* 5) Bugs Bunny = Gazillion!@%$Erbzzztt-EINVAL db
* Since we're not Bugs Bunny ..uh..err.. avoiding 64bit arithmetic, 24bit
* is pretty much sufficient for our signed integer processing.
*/
#define PCM_READ_S32_LE(b8) (_PCM_READ_S32_LE(b8) >> PCM_FXSHIFT)
#define PCM_READ_S32_BE(b8) (_PCM_READ_S32_BE(b8) >> PCM_FXSHIFT)
#define PCM_WRITE_S32_LE(b8, val) _PCM_WRITE_S32_LE(b8, (val) << PCM_FXSHIFT)
#define PCM_WRITE_S32_BE(b8, val) _PCM_WRITE_S32_BE(b8, (val) << PCM_FXSHIFT)
#define PCM_READ_U32_LE(b8) (_PCM_READ_U32_LE(b8) >> PCM_FXSHIFT)
#define PCM_READ_U32_BE(b8) (_PCM_READ_U32_BE(b8) >> PCM_FXSHIFT)
#define PCM_WRITE_U32_LE(b8, val) _PCM_WRITE_U32_LE(b8, (val) << PCM_FXSHIFT)
#define PCM_WRITE_U32_BE(b8, val) _PCM_WRITE_U32_BE(b8, (val) << PCM_FXSHIFT)
#endif
/*
* 8bit sample is pretty much useless since it doesn't provide
* sufficient dynamic range throughout our filtering process.
* For the sake of completeness, declare it anyway.
*/
#define PCM_READ_S8(b8) *((int8_t *)(b8))
#define PCM_READ_S8_NE(b8) PCM_READ_S8(b8)
#define PCM_READ_U8(b8) ((int8_t)(*((uint8_t *)(b8)) ^ 0x80))
#define PCM_READ_U8_NE(b8) PCM_READ_U8(b8)
#define PCM_WRITE_S8(b8, val) *((int8_t *)(b8)) = (val)
#define PCM_WRITE_S8_NE(b8, val) PCM_WRITE_S8(b8, val)
#define PCM_WRITE_U8(b8, val) *((uint8_t *)(b8)) = (val) ^ 0x80
#define PCM_WRITE_U8_NE(b8, val) PCM_WRITE_U8(b8, val)
#define PCM_CLAMP_S8(val) \
(((val) > PCM_S8_MAX) ? PCM_S8_MAX : \
(((val) < PCM_S8_MIN) ? PCM_S8_MIN : (val)))
#define PCM_CLAMP_S16(val) \
(((val) > PCM_S16_MAX) ? PCM_S16_MAX : \
(((val) < PCM_S16_MIN) ? PCM_S16_MIN : (val)))
#define PCM_CLAMP_S24(val) \
(((val) > PCM_S24_MAX) ? PCM_S24_MAX : \
(((val) < PCM_S24_MIN) ? PCM_S24_MIN : (val)))
#ifdef PCM_USE_64BIT_ARITH
#define PCM_CLAMP_S32(val) \
(((val) > PCM_S32_MAX) ? PCM_S32_MAX : \
(((val) < PCM_S32_MIN) ? PCM_S32_MIN : (val)))
#else
#define PCM_CLAMP_S32(val) \
(((val) > PCM_S24_MAX) ? PCM_S32_MAX : \
(((val) < PCM_S24_MIN) ? PCM_S32_MIN : \
((val) << PCM_FXSHIFT)))
#endif
#define PCM_CLAMP_U8(val) PCM_CLAMP_S8(val)
#define PCM_CLAMP_U16(val) PCM_CLAMP_S16(val)
#define PCM_CLAMP_U24(val) PCM_CLAMP_S24(val)
#define PCM_CLAMP_U32(val) PCM_CLAMP_S32(val)
/* make figuring out what a format is easier. got AFMT_STEREO already */
#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE)
#define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE)
#define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
#define AFMT_8BIT (AFMT_MU_LAW | AFMT_A_LAW | AFMT_U8 | AFMT_S8)
#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \
AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \
AFMT_S16_BE | AFMT_U16_BE)
struct pcm_channel *fkchan_setup(device_t dev);
int fkchan_kill(struct pcm_channel *c);
/* XXX Flawed definition. I'll fix it someday. */
#define SND_MAXVCHANS PCMMAXCHAN
/*
* Minor numbers for the sound driver.
*
* Unfortunately Creative called the codec chip of SB as a DSP. For this
* reason the /dev/dsp is reserved for digitized audio use. There is a
* device for true DSP processors but it will be called something else.
* In v3.0 it's /dev/sndproc but this could be a temporary solution.
*/
#define SND_DEV_CTL 0 /* Control port /dev/mixer */
#define SND_DEV_SEQ 1 /* Sequencer /dev/sequencer */
#define SND_DEV_MIDIN 2 /* Raw midi access */
#define SND_DEV_DSP 3 /* Digitized voice /dev/dsp */
#define SND_DEV_AUDIO 4 /* Sparc compatible /dev/audio */
#define SND_DEV_DSP16 5 /* Like /dev/dsp but 16 bits/sample */
#define SND_DEV_STATUS 6 /* /dev/sndstat */
/* #7 not in use now. */
#define SND_DEV_SEQ2 8 /* /dev/sequencer, level 2 interface */
#define SND_DEV_SNDPROC 9 /* /dev/sndproc for programmable devices */
#define SND_DEV_PSS SND_DEV_SNDPROC /* ? */
#define SND_DEV_NORESET 10
#define SND_DEV_DSPHW 11 /* specific channel request */
#define DSP_DEFAULT_SPEED 8000
#define ON 1
#define OFF 0
extern int pcm_veto_load;
extern int snd_unit;
extern int snd_maxautovchans;
extern int snd_verbose;
extern devclass_t pcm_devclass;
extern struct unrhdr *pcmsg_unrhdr;
/*
* some macros for debugging purposes
* DDB/DEB to enable/disable debugging stuff
* BVDDB to enable debugging when bootverbose
*/
#define BVDDB(x) if (bootverbose) x
#ifndef DEB
#define DEB(x)
#endif
SYSCTL_DECL(_hw_snd);
struct pcm_channel *pcm_getfakechan(struct snddev_info *d);
int pcm_chnalloc(struct snddev_info *d, struct pcm_channel **ch, int direction, pid_t pid, int chnum);
int pcm_chnrelease(struct pcm_channel *c);
int pcm_chnref(struct pcm_channel *c, int ref);
int pcm_inprog(struct snddev_info *d, int delta);
struct pcm_channel *pcm_chn_create(struct snddev_info *d, struct pcm_channel *parent, kobj_class_t cls, int dir, void *devinfo);
int pcm_chn_destroy(struct pcm_channel *ch);
int pcm_chn_add(struct snddev_info *d, struct pcm_channel *ch);
int pcm_chn_remove(struct snddev_info *d, struct pcm_channel *ch);
int pcm_addchan(device_t dev, int dir, kobj_class_t cls, void *devinfo);
unsigned int pcm_getbuffersize(device_t dev, unsigned int minbufsz, unsigned int deflt, unsigned int maxbufsz);
int pcm_register(device_t dev, void *devinfo, int numplay, int numrec);
int pcm_unregister(device_t dev);
int pcm_setstatus(device_t dev, char *str);
u_int32_t pcm_getflags(device_t dev);
void pcm_setflags(device_t dev, u_int32_t val);
void *pcm_getdevinfo(device_t dev);
int snd_setup_intr(device_t dev, struct resource *res, int flags,
driver_intr_t hand, void *param, void **cookiep);
void *snd_mtxcreate(const char *desc, const char *type);
void snd_mtxfree(void *m);
void snd_mtxassert(void *m);
#define snd_mtxlock(m) mtx_lock(m)
#define snd_mtxunlock(m) mtx_unlock(m)
int sysctl_hw_snd_vchans(SYSCTL_HANDLER_ARGS);
typedef int (*sndstat_handler)(struct sbuf *s, device_t dev, int verbose);
int sndstat_acquire(void);
int sndstat_release(void);
int sndstat_register(device_t dev, char *str, sndstat_handler handler);
int sndstat_registerfile(char *str);
int sndstat_unregister(device_t dev);
int sndstat_unregisterfile(char *str);
#define SND_DECLARE_FILE(version) \
_SND_DECLARE_FILE(__LINE__, version)
#define _SND_DECLARE_FILE(uniq, version) \
__SND_DECLARE_FILE(uniq, version)
#define __SND_DECLARE_FILE(uniq, version) \
static char sndstat_vinfo[] = version; \
SYSINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_registerfile, sndstat_vinfo); \
SYSUNINIT(sdf_ ## uniq, SI_SUB_DRIVERS, SI_ORDER_MIDDLE, sndstat_unregisterfile, sndstat_vinfo);
/* usage of flags in device config entry (config file) */
#define DV_F_DRQ_MASK 0x00000007 /* mask for secondary drq */
#define DV_F_DUAL_DMA 0x00000010 /* set to use secondary dma channel */
/* ought to be made obsolete but still used by mss */
#define DV_F_DEV_MASK 0x0000ff00 /* force device type/class */
#define DV_F_DEV_SHIFT 8 /* force device type/class */
#define PCM_DEBUG_MTX
/*
* this is rather kludgey- we need to duplicate these struct def'ns from sound.c
* so that the macro versions of pcm_{,un}lock can dereference them.
* we also have to do this now makedev() has gone away.
*/
struct snddev_channel {
SLIST_ENTRY(snddev_channel) link;
struct pcm_channel *channel;
int chan_num;
struct cdev *dsp_devt;
struct cdev *dspW_devt;
struct cdev *audio_devt;
struct cdev *dspHW_devt;
};
struct snddev_info {
SLIST_HEAD(, snddev_channel) channels;
struct pcm_channel *fakechan;
unsigned devcount, playcount, reccount, vchancount;
unsigned flags;
int inprog;
unsigned int bufsz;
void *devinfo;
device_t dev;
char status[SND_STATUSLEN];
struct mtx *lock;
struct cdev *mixer_dev;
};
void sound_oss_sysinfo(oss_sysinfo *);
#ifdef PCM_DEBUG_MTX
#define pcm_lock(d) mtx_lock(((struct snddev_info *)(d))->lock)
#define pcm_unlock(d) mtx_unlock(((struct snddev_info *)(d))->lock)
#else
void pcm_lock(struct snddev_info *d);
void pcm_unlock(struct snddev_info *d);
#endif
#ifdef KLD_MODULE
#define PCM_KLDSTRING(a) ("kld " # a)
#else
#define PCM_KLDSTRING(a) ""
#endif
#endif /* _KERNEL */
#endif /* _OS_H_ */
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