1139749Simp/*- 2193640Sariff * Copyright (c) 2005-2009 Ariff Abdullah <ariff@FreeBSD.org> 3193640Sariff * Portions Copyright (c) Ryan Beasley <ryan.beasley@gmail.com> - GSoC 2006 4193640Sariff * Copyright (c) 1999 Cameron Grant <cg@FreeBSD.org> 550724Scg * All rights reserved. 650724Scg * 750724Scg * Redistribution and use in source and binary forms, with or without 850724Scg * modification, are permitted provided that the following conditions 950724Scg * are met: 1050724Scg * 1. Redistributions of source code must retain the above copyright 1150724Scg * notice, this list of conditions and the following disclaimer. 1250724Scg * 2. Redistributions in binary form must reproduce the above copyright 1350724Scg * notice, this list of conditions and the following disclaimer in the 1450724Scg * documentation and/or other materials provided with the distribution. 1550724Scg * 1650724Scg * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1750724Scg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1850724Scg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1950724Scg * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2050724Scg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2150724Scg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2250724Scg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2350724Scg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2450724Scg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2550724Scg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2650724Scg * SUCH DAMAGE. 2750724Scg * 2850733Speter * $FreeBSD$ 2950724Scg */ 3050724Scg 3174763Scgstruct pcmchan_caps { 3274763Scg u_int32_t minspeed, maxspeed; 3374763Scg u_int32_t *fmtlist; 3474763Scg u_int32_t caps; 3574763Scg}; 3674763Scg 37193640Sariffstruct pcmchan_matrix { 38193640Sariff int id; 39193640Sariff uint8_t channels, ext; 40193640Sariff struct { 41193640Sariff int type; 42193640Sariff uint32_t members; 43193640Sariff } map[SND_CHN_T_MAX + 1]; 44193640Sariff uint32_t mask; 45193640Sariff int8_t offset[SND_CHN_T_MAX]; 46193640Sariff}; 47193640Sariff 48162588Snetchild/* Forward declarations */ 49162588Snetchildstruct pcm_channel; 50162588Snetchildstruct pcmchan_syncgroup; 51162588Snetchildstruct pcmchan_syncmember; 52162588Snetchild 53162588Snetchildextern struct mtx snd_pcm_syncgroups_mtx; 54162588Snetchildextern SLIST_HEAD(pcm_synclist, pcmchan_syncgroup) snd_pcm_syncgroups; 55162588Snetchild 56162588Snetchild#define PCM_SG_LOCK() mtx_lock(&snd_pcm_syncgroups_mtx) 57162588Snetchild#define PCM_SG_TRYLOCK() mtx_trylock(&snd_pcm_syncgroups_mtx) 58162588Snetchild#define PCM_SG_UNLOCK() mtx_unlock(&snd_pcm_syncgroups_mtx) 59162588Snetchild#define PCM_SG_LOCKASSERT(arg) mtx_assert(&snd_pcm_syncgroups_mtx, arg) 60162588Snetchild 61162588Snetchild/** 62162588Snetchild * @brief Specifies an audio device sync group 63162588Snetchild */ 64162588Snetchildstruct pcmchan_syncgroup { 65162588Snetchild SLIST_ENTRY(pcmchan_syncgroup) link; 66162588Snetchild SLIST_HEAD(, pcmchan_syncmember) members; 67162588Snetchild int id; /**< Group identifier; set to address of group. */ 68162588Snetchild}; 69162588Snetchild 70162588Snetchild/** 71162588Snetchild * @brief Specifies a container for members of a sync group 72162588Snetchild */ 73162588Snetchildstruct pcmchan_syncmember { 74162588Snetchild SLIST_ENTRY(pcmchan_syncmember) link; 75162588Snetchild struct pcmchan_syncgroup *parent; /**< group head */ 76162588Snetchild struct pcm_channel *ch; 77162588Snetchild}; 78162588Snetchild 79193640Sariff#define CHN_NAMELEN 32 80193640Sariff#define CHN_COMM_UNUSED "<UNUSED>" 81193640Sariff#define CHN_COMM_UNKNOWN "<UNKNOWN>" 82193640Sariff 8374763Scgstruct pcm_channel { 8474763Scg kobj_t methods; 8574763Scg 8677269Scg pid_t pid; 8777269Scg int refcount; 8874763Scg struct pcm_feeder *feeder; 8974763Scg u_int32_t align; 9074763Scg 91164614Sariff int latency; 9274763Scg u_int32_t speed; 9374763Scg u_int32_t format; 9474763Scg u_int32_t flags; 9574763Scg u_int32_t feederflags; 96193640Sariff u_int64_t blocks; 9774763Scg 9874763Scg int direction; 99164614Sariff unsigned int interrupts, xruns, feedcount; 100164614Sariff unsigned int timeout; 10174763Scg struct snd_dbuf *bufhard, *bufsoft; 10277269Scg struct snddev_info *parentsnddev; 10377269Scg struct pcm_channel *parentchannel; 10474763Scg void *devinfo; 10589774Sscottl device_t dev; 106170161Sariff int unit; 10774763Scg char name[CHN_NAMELEN]; 108193640Sariff char comm[MAXCOMLEN + 1]; 109107285Scg struct mtx *lock; 110170161Sariff int trigger; 111162588Snetchild /** 112170815Sariff * For interrupt manipulations. 113170815Sariff */ 114170815Sariff struct cv intr_cv; 115170815Sariff /** 116162588Snetchild * Increment,decrement this around operations that temporarily yield 117162588Snetchild * lock. 118162588Snetchild */ 119162588Snetchild unsigned int inprog; 120162588Snetchild /** 121162588Snetchild * Special channel operations should examine @c inprog after acquiring 122162588Snetchild * lock. If zero, operations may continue. Else, thread should 123162588Snetchild * wait on this cv for previous operation to finish. 124162588Snetchild */ 125162588Snetchild struct cv cv; 126162588Snetchild /** 127162588Snetchild * Low water mark for select()/poll(). 128162588Snetchild * 129162588Snetchild * This is initialized to the channel's fragment size, and will be 130162588Snetchild * overwritten if a new fragment size is set. Users may alter this 131162588Snetchild * value directly with the @c SNDCTL_DSP_LOW_WATER ioctl. 132162588Snetchild */ 133162588Snetchild unsigned int lw; 134162588Snetchild /** 135162588Snetchild * If part of a sync group, this will point to the syncmember 136162588Snetchild * container. 137162588Snetchild */ 138162588Snetchild struct pcmchan_syncmember *sm; 139162588Snetchild#ifdef OSSV4_EXPERIMENT 140162588Snetchild u_int16_t lpeak, rpeak; /**< Peak value from 0-32767. */ 141162588Snetchild#endif 142170161Sariff 143170161Sariff struct { 144170161Sariff SLIST_HEAD(, pcm_channel) head; 145170161Sariff SLIST_ENTRY(pcm_channel) link; 146170161Sariff struct { 147170161Sariff SLIST_HEAD(, pcm_channel) head; 148170161Sariff SLIST_ENTRY(pcm_channel) link; 149170161Sariff } busy; 150170161Sariff } children; 151170161Sariff 152170161Sariff struct { 153170161Sariff struct { 154170161Sariff SLIST_ENTRY(pcm_channel) link; 155170161Sariff struct { 156170161Sariff SLIST_ENTRY(pcm_channel) link; 157170161Sariff } busy; 158193640Sariff struct { 159193640Sariff SLIST_ENTRY(pcm_channel) link; 160193640Sariff } opened; 161170161Sariff } pcm; 162170161Sariff } channels; 163170161Sariff 164193640Sariff struct pcmchan_matrix matrix; 165193640Sariff 166193640Sariff int volume[SND_VOL_C_MAX][SND_CHN_T_VOL_MAX]; 167193640Sariff 168170161Sariff void *data1, *data2; 16974763Scg}; 17074763Scg 171170161Sariff#define CHN_HEAD(x, y) &(x)->y.head 172170161Sariff#define CHN_INIT(x, y) SLIST_INIT(CHN_HEAD(x, y)) 173170161Sariff#define CHN_LINK(y) y.link 174170161Sariff#define CHN_EMPTY(x, y) SLIST_EMPTY(CHN_HEAD(x, y)) 175170161Sariff#define CHN_FIRST(x, y) SLIST_FIRST(CHN_HEAD(x, y)) 176170161Sariff 177170161Sariff#define CHN_FOREACH(x, y, z) \ 178170161Sariff SLIST_FOREACH(x, CHN_HEAD(y, z), CHN_LINK(z)) 179170161Sariff 180170161Sariff#define CHN_FOREACH_SAFE(w, x, y, z) \ 181170161Sariff SLIST_FOREACH_SAFE(w, CHN_HEAD(x, z), CHN_LINK(z), y) 182170161Sariff 183170161Sariff#define CHN_INSERT_HEAD(x, y, z) \ 184170161Sariff SLIST_INSERT_HEAD(CHN_HEAD(x, z), y, CHN_LINK(z)) 185170161Sariff 186170161Sariff#define CHN_INSERT_AFTER(x, y, z) \ 187170161Sariff SLIST_INSERT_AFTER(x, y, CHN_LINK(z)) 188170161Sariff 189170161Sariff#define CHN_REMOVE(x, y, z) \ 190170161Sariff SLIST_REMOVE(CHN_HEAD(x, z), y, pcm_channel, CHN_LINK(z)) 191170161Sariff 192170161Sariff#define CHN_INSERT_HEAD_SAFE(x, y, z) do { \ 193170161Sariff struct pcm_channel *t = NULL; \ 194170161Sariff CHN_FOREACH(t, x, z) { \ 195170161Sariff if (t == y) \ 196170161Sariff break; \ 197170161Sariff } \ 198193640Sariff if (t != y) \ 199170161Sariff CHN_INSERT_HEAD(x, y, z); \ 200193640Sariff} while (0) 201170161Sariff 202170161Sariff#define CHN_INSERT_AFTER_SAFE(w, x, y, z) do { \ 203170161Sariff struct pcm_channel *t = NULL; \ 204170161Sariff CHN_FOREACH(t, w, z) { \ 205170161Sariff if (t == y) \ 206170161Sariff break; \ 207170161Sariff } \ 208193640Sariff if (t != y) \ 209170161Sariff CHN_INSERT_AFTER(x, y, z); \ 210193640Sariff} while (0) 211170161Sariff 212170161Sariff#define CHN_REMOVE_SAFE(x, y, z) do { \ 213170161Sariff struct pcm_channel *t = NULL; \ 214170161Sariff CHN_FOREACH(t, x, z) { \ 215170161Sariff if (t == y) \ 216170161Sariff break; \ 217170161Sariff } \ 218193640Sariff if (t == y) \ 219170161Sariff CHN_REMOVE(x, y, z); \ 220193640Sariff} while (0) 221193640Sariff 222193640Sariff#define CHN_INSERT_SORT(w, x, y, z) do { \ 223193640Sariff struct pcm_channel *t, *a = NULL; \ 224193640Sariff CHN_FOREACH(t, x, z) { \ 225193640Sariff if ((y)->unit w t->unit) \ 226193640Sariff a = t; \ 227193640Sariff else \ 228193640Sariff break; \ 229170161Sariff } \ 230193640Sariff if (a != NULL) \ 231193640Sariff CHN_INSERT_AFTER(a, y, z); \ 232193640Sariff else \ 233193640Sariff CHN_INSERT_HEAD(x, y, z); \ 234193640Sariff} while (0) 235170161Sariff 236193640Sariff#define CHN_INSERT_SORT_ASCEND(x, y, z) CHN_INSERT_SORT(>, x, y, z) 237193640Sariff#define CHN_INSERT_SORT_DESCEND(x, y, z) CHN_INSERT_SORT(<, x, y, z) 238193640Sariff 239170161Sariff#define CHN_UNIT(x) (snd_unit2u((x)->unit)) 240170161Sariff#define CHN_DEV(x) (snd_unit2d((x)->unit)) 241170161Sariff#define CHN_CHAN(x) (snd_unit2c((x)->unit)) 242170161Sariff 243170815Sariff#define CHN_BUF_PARENT(x, y) \ 244170815Sariff (((x) != NULL && (x)->parentchannel != NULL && \ 245170815Sariff (x)->parentchannel->bufhard != NULL) ? \ 246170815Sariff (x)->parentchannel->bufhard : (y)) 247170815Sariff 248170815Sariff#define CHN_BROADCAST(x) do { \ 249170815Sariff if ((x)->cv_waiters != 0) \ 250170815Sariff cv_broadcastpri(x, PRIBIO); \ 251193640Sariff} while (0) 252170815Sariff 25370134Scg#include "channel_if.h" 25470134Scg 25574763Scgint chn_reinit(struct pcm_channel *c); 25674763Scgint chn_write(struct pcm_channel *c, struct uio *buf); 25774763Scgint chn_read(struct pcm_channel *c, struct uio *buf); 25874763Scgu_int32_t chn_start(struct pcm_channel *c, int force); 25974763Scgint chn_sync(struct pcm_channel *c, int threshold); 26074763Scgint chn_flush(struct pcm_channel *c); 26183366Sjulianint chn_poll(struct pcm_channel *c, int ev, struct thread *td); 26250724Scg 263126367Struckmanint chn_init(struct pcm_channel *c, void *devinfo, int dir, int direction); 26474763Scgint chn_kill(struct pcm_channel *c); 265193640Sariffint chn_reset(struct pcm_channel *c, u_int32_t fmt, u_int32_t spd); 26674763Scgint chn_setvolume(struct pcm_channel *c, int left, int right); 267193640Sariffint chn_setvolume_multi(struct pcm_channel *c, int vc, int left, int right, 268193640Sariff int center); 269193640Sariffint chn_setvolume_matrix(struct pcm_channel *c, int vc, int vt, int val); 270193640Sariffint chn_getvolume_matrix(struct pcm_channel *c, int vc, int vt); 271193640Sariffvoid chn_vpc_reset(struct pcm_channel *c, int vc, int force); 272193640Sariffint chn_setparam(struct pcm_channel *c, uint32_t format, uint32_t speed); 273193640Sariffint chn_setspeed(struct pcm_channel *c, uint32_t speed); 274193640Sariffint chn_setformat(struct pcm_channel *c, uint32_t format); 27574763Scgint chn_setblocksize(struct pcm_channel *c, int blkcnt, int blksz); 276164614Sariffint chn_setlatency(struct pcm_channel *c, int latency); 277193640Sariffvoid chn_syncstate(struct pcm_channel *c); 27874763Scgint chn_trigger(struct pcm_channel *c, int go); 27974763Scgint chn_getptr(struct pcm_channel *c); 28074763Scgstruct pcmchan_caps *chn_getcaps(struct pcm_channel *c); 28174763Scgu_int32_t chn_getformats(struct pcm_channel *c); 28250724Scg 283193640Sariffstruct pcmchan_matrix *chn_getmatrix(struct pcm_channel *); 284193640Sariffint chn_setmatrix(struct pcm_channel *, struct pcmchan_matrix *); 285193640Sariff 286193640Sariffint chn_oss_getorder(struct pcm_channel *, unsigned long long *); 287193640Sariffint chn_oss_setorder(struct pcm_channel *, unsigned long long *); 288193640Sariffint chn_oss_getmask(struct pcm_channel *, uint32_t *); 289193640Sariff 29074763Scgvoid chn_resetbuf(struct pcm_channel *c); 291193640Sariffvoid chn_intr_locked(struct pcm_channel *c); 29274763Scgvoid chn_intr(struct pcm_channel *c); 29374763Scgint chn_abort(struct pcm_channel *c); 29450724Scg 29577269Scgint chn_notify(struct pcm_channel *c, u_int32_t flags); 29677269Scg 297162588Snetchildint chn_getrates(struct pcm_channel *c, int **rates); 298162588Snetchildint chn_syncdestroy(struct pcm_channel *c); 299162588Snetchild 300193640Sariff#define CHN_SETVOLUME(...) chn_setvolume_matrix(__VA_ARGS__) 301193640Sariff#if defined(SND_DIAGNOSTIC) || defined(INVARIANTS) 302193640Sariff#define CHN_GETVOLUME(...) chn_getvolume_matrix(__VA_ARGS__) 303193640Sariff#else 304193640Sariff#define CHN_GETVOLUME(x, y, z) ((x)->volume[y][z]) 305193640Sariff#endif 306193640Sariff 307162588Snetchild#ifdef OSSV4_EXPERIMENT 308162588Snetchildint chn_getpeaks(struct pcm_channel *c, int *lpeak, int *rpeak); 309162588Snetchild#endif 310162588Snetchild 311193640Sariff#define CHN_LOCKOWNED(c) mtx_owned((c)->lock) 312193640Sariff#define CHN_LOCK(c) mtx_lock((c)->lock) 313193640Sariff#define CHN_UNLOCK(c) mtx_unlock((c)->lock) 314193640Sariff#define CHN_TRYLOCK(c) mtx_trylock((c)->lock) 315193640Sariff#define CHN_LOCKASSERT(c) mtx_assert((c)->lock, MA_OWNED) 316193640Sariff#define CHN_UNLOCKASSERT(c) mtx_assert((c)->lock, MA_NOTOWNED) 31774763Scg 318193640Sariffint snd_fmtvalid(uint32_t fmt, uint32_t *fmtlist); 31964881Scg 320193640Sariffuint32_t snd_str2afmt(const char *); 321193640Sariffuint32_t snd_afmt2str(uint32_t, char *, size_t); 322164614Sariff 323193640Sariff#define AFMTSTR_LEN 16 324164614Sariff 325164614Sariff 326164614Sariffextern int chn_latency; 327164614Sariffextern int chn_latency_profile; 328164614Sariffextern int report_soft_formats; 329193640Sariffextern int report_soft_matrix; 330164614Sariff 331170161Sariff#define PCMDIR_PLAY 1 332170161Sariff#define PCMDIR_PLAY_VIRTUAL 2 333170161Sariff#define PCMDIR_REC -1 334170161Sariff#define PCMDIR_REC_VIRTUAL -2 33550724Scg 33650724Scg#define PCMTRIG_START 1 33755204Scg#define PCMTRIG_EMLDMAWR 2 33860958Scg#define PCMTRIG_EMLDMARD 3 33950724Scg#define PCMTRIG_STOP 0 34050724Scg#define PCMTRIG_ABORT -1 34150724Scg 342170521Sariff#define PCMTRIG_COMMON(x) ((x) == PCMTRIG_START || \ 343170521Sariff (x) == PCMTRIG_STOP || \ 344170521Sariff (x) == PCMTRIG_ABORT) 345170521Sariff 346193640Sariff#define CHN_F_CLOSING 0x00000001 /* a pending close */ 347193640Sariff#define CHN_F_ABORTING 0x00000002 /* a pending abort */ 348193640Sariff#define CHN_F_RUNNING 0x00000004 /* dma is running */ 349193640Sariff#define CHN_F_TRIGGERED 0x00000008 350193640Sariff#define CHN_F_NOTRIGGER 0x00000010 351193640Sariff#define CHN_F_SLEEPING 0x00000020 35250724Scg 353193640Sariff#define CHN_F_NBIO 0x00000040 /* do non-blocking i/o */ 354193640Sariff#define CHN_F_MMAP 0x00000080 /* has been mmap()ed */ 35550724Scg 356193640Sariff#define CHN_F_BUSY 0x00000100 /* has been opened */ 357193640Sariff#define CHN_F_DIRTY 0x00000200 /* need re-config */ 358193640Sariff#define CHN_F_DEAD 0x00000400 /* too many errors, dead, mdk */ 359193640Sariff#define CHN_F_SILENCE 0x00000800 /* silence, nil, null, yada */ 360193640Sariff 361193640Sariff#define CHN_F_HAS_SIZE 0x00001000 /* user set block size */ 362193640Sariff#define CHN_F_HAS_VCHAN 0x00002000 /* vchan master */ 363193640Sariff 364193640Sariff#define CHN_F_VCHAN_PASSTHROUGH 0x00004000 /* digital ac3/dts passthrough */ 365193640Sariff#define CHN_F_VCHAN_ADAPTIVE 0x00008000 /* adaptive format/rate selection */ 366193640Sariff#define CHN_F_VCHAN_DYNAMIC (CHN_F_VCHAN_PASSTHROUGH | CHN_F_VCHAN_ADAPTIVE) 367193640Sariff 36877269Scg#define CHN_F_VIRTUAL 0x10000000 /* not backed by hardware */ 369193640Sariff#define CHN_F_BITPERFECT 0x20000000 /* un-cooked, Heh.. */ 370193640Sariff#define CHN_F_PASSTHROUGH 0x40000000 /* passthrough re-config */ 371193640Sariff#define CHN_F_EXCLUSIVE 0x80000000 /* exclusive access */ 37254535Scg 373193640Sariff#define CHN_F_BITS "\020" \ 374193640Sariff "\001CLOSING" \ 375193640Sariff "\002ABORTING" \ 376193640Sariff "\003RUNNING" \ 377193640Sariff "\004TRIGGERED" \ 378193640Sariff "\005NOTRIGGER" \ 379193640Sariff "\006SLEEPING" \ 380193640Sariff "\007NBIO" \ 381193640Sariff "\010MMAP" \ 382193640Sariff "\011BUSY" \ 383193640Sariff "\012DIRTY" \ 384193640Sariff "\013DEAD" \ 385193640Sariff "\014SILENCE" \ 386193640Sariff "\015HAS_SIZE" \ 387193640Sariff "\016HAS_VCHAN" \ 388193640Sariff "\017VCHAN_PASSTHROUGH" \ 389193640Sariff "\020VCHAN_ADAPTIVE" \ 390193640Sariff "\035VIRTUAL" \ 391193640Sariff "\036BITPERFECT" \ 392193640Sariff "\037PASSTHROUGH" \ 393193640Sariff "\040EXCLUSIVE" 394193640Sariff 395193640Sariff 396170815Sariff#define CHN_F_RESET (CHN_F_BUSY | CHN_F_DEAD | \ 397193640Sariff CHN_F_VIRTUAL | CHN_F_HAS_VCHAN | \ 398193640Sariff CHN_F_VCHAN_DYNAMIC | \ 399193640Sariff CHN_F_PASSTHROUGH | CHN_F_EXCLUSIVE) 400170815Sariff 401170815Sariff#define CHN_F_MMAP_INVALID (CHN_F_DEAD | CHN_F_RUNNING) 402170815Sariff 403149953Snetchild 40477269Scg 40577269Scg#define CHN_N_RATE 0x00000001 40677269Scg#define CHN_N_FORMAT 0x00000002 40777269Scg#define CHN_N_VOLUME 0x00000004 40877269Scg#define CHN_N_BLOCKSIZE 0x00000008 40977269Scg#define CHN_N_TRIGGER 0x00000010 41077269Scg 411164614Sariff#define CHN_LATENCY_MIN 0 412164614Sariff#define CHN_LATENCY_MAX 10 413164614Sariff#define CHN_LATENCY_DEFAULT 5 414164614Sariff#define CHN_POLICY_MIN CHN_LATENCY_MIN 415164614Sariff#define CHN_POLICY_MAX CHN_LATENCY_MAX 416164614Sariff#define CHN_POLICY_DEFAULT CHN_LATENCY_DEFAULT 417164614Sariff 418164614Sariff#define CHN_LATENCY_PROFILE_MIN 0 419164614Sariff#define CHN_LATENCY_PROFILE_MAX 1 420164614Sariff#define CHN_LATENCY_PROFILE_DEFAULT CHN_LATENCY_PROFILE_MAX 421164614Sariff 422170815Sariff#define CHN_STARTED(c) ((c)->flags & CHN_F_TRIGGERED) 423170815Sariff#define CHN_STOPPED(c) (!CHN_STARTED(c)) 424170815Sariff#define CHN_DIRSTR(c) (((c)->direction == PCMDIR_PLAY) ? \ 425170815Sariff "PCMDIR_PLAY" : "PCMDIR_REC") 426193640Sariff#define CHN_BITPERFECT(c) ((c)->flags & CHN_F_BITPERFECT) 427193640Sariff#define CHN_PASSTHROUGH(c) ((c)->flags & CHN_F_PASSTHROUGH) 428170815Sariff 429170815Sariff#define CHN_TIMEOUT 5 430170815Sariff#define CHN_TIMEOUT_MIN 1 431170815Sariff#define CHN_TIMEOUT_MAX 10 432170815Sariff 43354535Scg/* 43454535Scg * This should be large enough to hold all pcm data between 43554535Scg * tsleeps in chn_{read,write} at the highest sample rate. 43654535Scg * (which is usually 48kHz * 16bit * stereo = 192000 bytes/sec) 43754535Scg */ 43855204Scg#define CHN_2NDBUFBLKSIZE (2 * 1024) 43974763Scg/* The total number of blocks per secondary bufhard. */ 44059020Scg#define CHN_2NDBUFBLKNUM (32) 44174763Scg/* The size of a whole secondary bufhard. */ 44259246Scg#define CHN_2NDBUFMAXSIZE (131072) 44370134Scg 44470134Scg#define CHANNEL_DECLARE(name) static DEFINE_CLASS(name, name ## _methods, sizeof(struct kobj)) 445