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/*-
* Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org>
* Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006
* Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org>
* 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: release/9.1.0/sys/dev/sound/pcm/channel.h 193979 2009-06-11 09:06:09Z ariff $
*/
struct pcmchan_caps {
u_int32_t minspeed, maxspeed;
u_int32_t *fmtlist;
u_int32_t caps;
};
struct pcmchan_matrix {
int id;
uint8_t channels, ext;
struct {
int type;
uint32_t members;
} map[SND_CHN_T_MAX + 1];
uint32_t mask;
int8_t offset[SND_CHN_T_MAX];
};
/* Forward declarations */
struct pcm_channel;
struct pcmchan_syncgroup;
struct pcmchan_syncmember;
extern struct mtx snd_pcm_syncgroups_mtx;
extern SLIST_HEAD(pcm_synclist, pcmchan_syncgroup) snd_pcm_syncgroups;
#define PCM_SG_LOCK() mtx_lock(&snd_pcm_syncgroups_mtx)
#define PCM_SG_TRYLOCK() mtx_trylock(&snd_pcm_syncgroups_mtx)
#define PCM_SG_UNLOCK() mtx_unlock(&snd_pcm_syncgroups_mtx)
#define PCM_SG_LOCKASSERT(arg) mtx_assert(&snd_pcm_syncgroups_mtx, arg)
/**
* @brief Specifies an audio device sync group
*/
struct pcmchan_syncgroup {
SLIST_ENTRY(pcmchan_syncgroup) link;
SLIST_HEAD(, pcmchan_syncmember) members;
int id; /**< Group identifier; set to address of group. */
};
/**
* @brief Specifies a container for members of a sync group
*/
struct pcmchan_syncmember {
SLIST_ENTRY(pcmchan_syncmember) link;
struct pcmchan_syncgroup *parent; /**< group head */
struct pcm_channel *ch;
};
#define CHN_NAMELEN 32
#define CHN_COMM_UNUSED "<UNUSED>"
#define CHN_COMM_UNKNOWN "<UNKNOWN>"
struct pcm_channel {
kobj_t methods;
pid_t pid;
int refcount;
struct pcm_feeder *feeder;
u_int32_t align;
int latency;
u_int32_t speed;
u_int32_t format;
u_int32_t flags;
u_int32_t feederflags;
u_int64_t blocks;
int direction;
unsigned int interrupts, xruns, feedcount;
unsigned int timeout;
struct snd_dbuf *bufhard, *bufsoft;
struct snddev_info *parentsnddev;
struct pcm_channel *parentchannel;
void *devinfo;
device_t dev;
int unit;
char name[CHN_NAMELEN];
char comm[MAXCOMLEN + 1];
struct mtx *lock;
int trigger;
/**
* For interrupt manipulations.
*/
struct cv intr_cv;
/**
* Increment,decrement this around operations that temporarily yield
* lock.
*/
unsigned int inprog;
/**
* Special channel operations should examine @c inprog after acquiring
* lock. If zero, operations may continue. Else, thread should
* wait on this cv for previous operation to finish.
*/
struct cv cv;
/**
* Low water mark for select()/poll().
*
* This is initialized to the channel's fragment size, and will be
* overwritten if a new fragment size is set. Users may alter this
* value directly with the @c SNDCTL_DSP_LOW_WATER ioctl.
*/
unsigned int lw;
/**
* If part of a sync group, this will point to the syncmember
* container.
*/
struct pcmchan_syncmember *sm;
#ifdef OSSV4_EXPERIMENT
u_int16_t lpeak, rpeak; /**< Peak value from 0-32767. */
#endif
struct {
SLIST_HEAD(, pcm_channel) head;
SLIST_ENTRY(pcm_channel) link;
struct {
SLIST_HEAD(, pcm_channel) head;
SLIST_ENTRY(pcm_channel) link;
} busy;
} children;
struct {
struct {
SLIST_ENTRY(pcm_channel) link;
struct {
SLIST_ENTRY(pcm_channel) link;
} busy;
struct {
SLIST_ENTRY(pcm_channel) link;
} opened;
} pcm;
} channels;
struct pcmchan_matrix matrix;
int volume[SND_VOL_C_MAX][SND_CHN_T_VOL_MAX];
void *data1, *data2;
};
#define CHN_HEAD(x, y) &(x)->y.head
#define CHN_INIT(x, y) SLIST_INIT(CHN_HEAD(x, y))
#define CHN_LINK(y) y.link
#define CHN_EMPTY(x, y) SLIST_EMPTY(CHN_HEAD(x, y))
#define CHN_FIRST(x, y) SLIST_FIRST(CHN_HEAD(x, y))
#define CHN_FOREACH(x, y, z) \
SLIST_FOREACH(x, CHN_HEAD(y, z), CHN_LINK(z))
#define CHN_FOREACH_SAFE(w, x, y, z) \
SLIST_FOREACH_SAFE(w, CHN_HEAD(x, z), CHN_LINK(z), y)
#define CHN_INSERT_HEAD(x, y, z) \
SLIST_INSERT_HEAD(CHN_HEAD(x, z), y, CHN_LINK(z))
#define CHN_INSERT_AFTER(x, y, z) \
SLIST_INSERT_AFTER(x, y, CHN_LINK(z))
#define CHN_REMOVE(x, y, z) \
SLIST_REMOVE(CHN_HEAD(x, z), y, pcm_channel, CHN_LINK(z))
#define CHN_INSERT_HEAD_SAFE(x, y, z) do { \
struct pcm_channel *t = NULL; \
CHN_FOREACH(t, x, z) { \
if (t == y) \
break; \
} \
if (t != y) \
CHN_INSERT_HEAD(x, y, z); \
} while (0)
#define CHN_INSERT_AFTER_SAFE(w, x, y, z) do { \
struct pcm_channel *t = NULL; \
CHN_FOREACH(t, w, z) { \
if (t == y) \
break; \
} \
if (t != y) \
CHN_INSERT_AFTER(x, y, z); \
} while (0)
#define CHN_REMOVE_SAFE(x, y, z) do { \
struct pcm_channel *t = NULL; \
CHN_FOREACH(t, x, z) { \
if (t == y) \
break; \
} \
if (t == y) \
CHN_REMOVE(x, y, z); \
} while (0)
#define CHN_INSERT_SORT(w, x, y, z) do { \
struct pcm_channel *t, *a = NULL; \
CHN_FOREACH(t, x, z) { \
if ((y)->unit w t->unit) \
a = t; \
else \
break; \
} \
if (a != NULL) \
CHN_INSERT_AFTER(a, y, z); \
else \
CHN_INSERT_HEAD(x, y, z); \
} while (0)
#define CHN_INSERT_SORT_ASCEND(x, y, z) CHN_INSERT_SORT(>, x, y, z)
#define CHN_INSERT_SORT_DESCEND(x, y, z) CHN_INSERT_SORT(<, x, y, z)
#define CHN_UNIT(x) (snd_unit2u((x)->unit))
#define CHN_DEV(x) (snd_unit2d((x)->unit))
#define CHN_CHAN(x) (snd_unit2c((x)->unit))
#define CHN_BUF_PARENT(x, y) \
(((x) != NULL && (x)->parentchannel != NULL && \
(x)->parentchannel->bufhard != NULL) ? \
(x)->parentchannel->bufhard : (y))
#define CHN_BROADCAST(x) do { \
if ((x)->cv_waiters != 0) \
cv_broadcastpri(x, PRIBIO); \
} while (0)
#include "channel_if.h"
int chn_reinit(struct pcm_channel *c);
int chn_write(struct pcm_channel *c, struct uio *buf);
int chn_read(struct pcm_channel *c, struct uio *buf);
u_int32_t chn_start(struct pcm_channel *c, int force);
int chn_sync(struct pcm_channel *c, int threshold);
int chn_flush(struct pcm_channel *c);
int chn_poll(struct pcm_channel *c, int ev, struct thread *td);
int chn_init(struct pcm_channel *c, void *devinfo, int dir, int direction);
int chn_kill(struct pcm_channel *c);
int chn_reset(struct pcm_channel *c, u_int32_t fmt, u_int32_t spd);
int chn_setvolume(struct pcm_channel *c, int left, int right);
int chn_setvolume_multi(struct pcm_channel *c, int vc, int left, int right,
int center);
int chn_setvolume_matrix(struct pcm_channel *c, int vc, int vt, int val);
int chn_getvolume_matrix(struct pcm_channel *c, int vc, int vt);
void chn_vpc_reset(struct pcm_channel *c, int vc, int force);
int chn_setparam(struct pcm_channel *c, uint32_t format, uint32_t speed);
int chn_setspeed(struct pcm_channel *c, uint32_t speed);
int chn_setformat(struct pcm_channel *c, uint32_t format);
int chn_setblocksize(struct pcm_channel *c, int blkcnt, int blksz);
int chn_setlatency(struct pcm_channel *c, int latency);
void chn_syncstate(struct pcm_channel *c);
int chn_trigger(struct pcm_channel *c, int go);
int chn_getptr(struct pcm_channel *c);
struct pcmchan_caps *chn_getcaps(struct pcm_channel *c);
u_int32_t chn_getformats(struct pcm_channel *c);
struct pcmchan_matrix *chn_getmatrix(struct pcm_channel *);
int chn_setmatrix(struct pcm_channel *, struct pcmchan_matrix *);
int chn_oss_getorder(struct pcm_channel *, unsigned long long *);
int chn_oss_setorder(struct pcm_channel *, unsigned long long *);
int chn_oss_getmask(struct pcm_channel *, uint32_t *);
void chn_resetbuf(struct pcm_channel *c);
void chn_intr_locked(struct pcm_channel *c);
void chn_intr(struct pcm_channel *c);
int chn_abort(struct pcm_channel *c);
int chn_notify(struct pcm_channel *c, u_int32_t flags);
int chn_getrates(struct pcm_channel *c, int **rates);
int chn_syncdestroy(struct pcm_channel *c);
#define CHN_SETVOLUME(...) chn_setvolume_matrix(__VA_ARGS__)
#if defined(SND_DIAGNOSTIC) || defined(INVARIANTS)
#define CHN_GETVOLUME(...) chn_getvolume_matrix(__VA_ARGS__)
#else
#define CHN_GETVOLUME(x, y, z) ((x)->volume[y][z])
#endif
#ifdef OSSV4_EXPERIMENT
int chn_getpeaks(struct pcm_channel *c, int *lpeak, int *rpeak);
#endif
#define CHN_LOCKOWNED(c) mtx_owned((c)->lock)
#define CHN_LOCK(c) mtx_lock((c)->lock)
#define CHN_UNLOCK(c) mtx_unlock((c)->lock)
#define CHN_TRYLOCK(c) mtx_trylock((c)->lock)
#define CHN_LOCKASSERT(c) mtx_assert((c)->lock, MA_OWNED)
#define CHN_UNLOCKASSERT(c) mtx_assert((c)->lock, MA_NOTOWNED)
int snd_fmtvalid(uint32_t fmt, uint32_t *fmtlist);
uint32_t snd_str2afmt(const char *);
uint32_t snd_afmt2str(uint32_t, char *, size_t);
#define AFMTSTR_LEN 16
extern int chn_latency;
extern int chn_latency_profile;
extern int report_soft_formats;
extern int report_soft_matrix;
#define PCMDIR_PLAY 1
#define PCMDIR_PLAY_VIRTUAL 2
#define PCMDIR_REC -1
#define PCMDIR_REC_VIRTUAL -2
#define PCMTRIG_START 1
#define PCMTRIG_EMLDMAWR 2
#define PCMTRIG_EMLDMARD 3
#define PCMTRIG_STOP 0
#define PCMTRIG_ABORT -1
#define PCMTRIG_COMMON(x) ((x) == PCMTRIG_START || \
(x) == PCMTRIG_STOP || \
(x) == PCMTRIG_ABORT)
#define CHN_F_CLOSING 0x00000001 /* a pending close */
#define CHN_F_ABORTING 0x00000002 /* a pending abort */
#define CHN_F_RUNNING 0x00000004 /* dma is running */
#define CHN_F_TRIGGERED 0x00000008
#define CHN_F_NOTRIGGER 0x00000010
#define CHN_F_SLEEPING 0x00000020
#define CHN_F_NBIO 0x00000040 /* do non-blocking i/o */
#define CHN_F_MMAP 0x00000080 /* has been mmap()ed */
#define CHN_F_BUSY 0x00000100 /* has been opened */
#define CHN_F_DIRTY 0x00000200 /* need re-config */
#define CHN_F_DEAD 0x00000400 /* too many errors, dead, mdk */
#define CHN_F_SILENCE 0x00000800 /* silence, nil, null, yada */
#define CHN_F_HAS_SIZE 0x00001000 /* user set block size */
#define CHN_F_HAS_VCHAN 0x00002000 /* vchan master */
#define CHN_F_VCHAN_PASSTHROUGH 0x00004000 /* digital ac3/dts passthrough */
#define CHN_F_VCHAN_ADAPTIVE 0x00008000 /* adaptive format/rate selection */
#define CHN_F_VCHAN_DYNAMIC (CHN_F_VCHAN_PASSTHROUGH | CHN_F_VCHAN_ADAPTIVE)
#define CHN_F_VIRTUAL 0x10000000 /* not backed by hardware */
#define CHN_F_BITPERFECT 0x20000000 /* un-cooked, Heh.. */
#define CHN_F_PASSTHROUGH 0x40000000 /* passthrough re-config */
#define CHN_F_EXCLUSIVE 0x80000000 /* exclusive access */
#define CHN_F_BITS "\020" \
"\001CLOSING" \
"\002ABORTING" \
"\003RUNNING" \
"\004TRIGGERED" \
"\005NOTRIGGER" \
"\006SLEEPING" \
"\007NBIO" \
"\010MMAP" \
"\011BUSY" \
"\012DIRTY" \
"\013DEAD" \
"\014SILENCE" \
"\015HAS_SIZE" \
"\016HAS_VCHAN" \
"\017VCHAN_PASSTHROUGH" \
"\020VCHAN_ADAPTIVE" \
"\035VIRTUAL" \
"\036BITPERFECT" \
"\037PASSTHROUGH" \
"\040EXCLUSIVE"
#define CHN_F_RESET (CHN_F_BUSY | CHN_F_DEAD | \
CHN_F_VIRTUAL | CHN_F_HAS_VCHAN | \
CHN_F_VCHAN_DYNAMIC | \
CHN_F_PASSTHROUGH | CHN_F_EXCLUSIVE)
#define CHN_F_MMAP_INVALID (CHN_F_DEAD | CHN_F_RUNNING)
#define CHN_N_RATE 0x00000001
#define CHN_N_FORMAT 0x00000002
#define CHN_N_VOLUME 0x00000004
#define CHN_N_BLOCKSIZE 0x00000008
#define CHN_N_TRIGGER 0x00000010
#define CHN_LATENCY_MIN 0
#define CHN_LATENCY_MAX 10
#define CHN_LATENCY_DEFAULT 5
#define CHN_POLICY_MIN CHN_LATENCY_MIN
#define CHN_POLICY_MAX CHN_LATENCY_MAX
#define CHN_POLICY_DEFAULT CHN_LATENCY_DEFAULT
#define CHN_LATENCY_PROFILE_MIN 0
#define CHN_LATENCY_PROFILE_MAX 1
#define CHN_LATENCY_PROFILE_DEFAULT CHN_LATENCY_PROFILE_MAX
#define CHN_STARTED(c) ((c)->flags & CHN_F_TRIGGERED)
#define CHN_STOPPED(c) (!CHN_STARTED(c))
#define CHN_DIRSTR(c) (((c)->direction == PCMDIR_PLAY) ? \
"PCMDIR_PLAY" : "PCMDIR_REC")
#define CHN_BITPERFECT(c) ((c)->flags & CHN_F_BITPERFECT)
#define CHN_PASSTHROUGH(c) ((c)->flags & CHN_F_PASSTHROUGH)
#define CHN_TIMEOUT 5
#define CHN_TIMEOUT_MIN 1
#define CHN_TIMEOUT_MAX 10
/*
* This should be large enough to hold all pcm data between
* tsleeps in chn_{read,write} at the highest sample rate.
* (which is usually 48kHz * 16bit * stereo = 192000 bytes/sec)
*/
#define CHN_2NDBUFBLKSIZE (2 * 1024)
/* The total number of blocks per secondary bufhard. */
#define CHN_2NDBUFBLKNUM (32)
/* The size of a whole secondary bufhard. */
#define CHN_2NDBUFMAXSIZE (131072)
#define CHANNEL_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, sizeof(struct kobj))