/*- * SPDX-License-Identifier: BSD-2-Clause * * Copyright (c) 2005-2009 Ariff Abdullah * Portions Copyright (c) Ryan Beasley - GSoC 2006 * Copyright (c) 1999 Cameron Grant * 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. */ 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 "" #define CHN_COMM_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; struct pcmchan_matrix matrix_scratch; int16_t volume[SND_VOL_C_MAX][SND_CHN_T_VOL_MAX]; int8_t muted[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); int chn_setmute_multi(struct pcm_channel *c, int vc, int mute); int chn_setmute_matrix(struct pcm_channel *c, int vc, int vt, int mute); int chn_getmute_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 #define CHN_GETMUTE(x, y, z) ((x)->muted[y][z]) #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 2 /* 21.3ms total buffering */ #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))