Lines Matching full:b
46 struct snd_dbuf *b;
48 b = malloc(sizeof(*b), M_DEVBUF, M_WAITOK | M_ZERO);
49 snprintf(b->name, SNDBUF_NAMELEN, "%s:%s", drv, desc);
50 b->dev = dev;
51 b->channel = channel;
53 return b;
57 sndbuf_destroy(struct snd_dbuf *b)
59 sndbuf_free(b);
60 free(b, M_DEVBUF);
72 struct snd_dbuf *b = (struct snd_dbuf *)arg;
75 device_printf(b->dev, "sndbuf_setmap %lx, %lx; ",
77 printf("%p -> %lx\n", b->buf, (u_long)segs[0].ds_addr);
80 b->buf_addr = segs[0].ds_addr;
82 b->buf_addr = 0;
91 sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, int dmaflags,
96 b->dmatag = dmatag;
97 b->dmaflags = dmaflags | BUS_DMA_NOWAIT | BUS_DMA_COHERENT;
98 b->maxsize = size;
99 b->bufsize = b->maxsize;
100 b->buf_addr = 0;
101 b->flags |= SNDBUF_F_MANAGED;
102 if (bus_dmamem_alloc(b->dmatag, (void **)&b->buf, b->dmaflags,
103 &b->dmamap)) {
104 sndbuf_free(b);
107 if (bus_dmamap_load(b->dmatag, b->dmamap, b->buf, b->maxsize,
108 sndbuf_setmap, b, BUS_DMA_NOWAIT) != 0 || b->buf_addr == 0) {
109 sndbuf_free(b);
113 ret = sndbuf_resize(b, 2, b->maxsize / 2);
115 sndbuf_free(b);
121 sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size)
123 b->flags &= ~SNDBUF_F_MANAGED;
125 b->flags |= SNDBUF_F_MANAGED;
126 b->buf = buf;
127 b->maxsize = size;
128 b->bufsize = b->maxsize;
129 return sndbuf_resize(b, 2, b->maxsize / 2);
133 sndbuf_free(struct snd_dbuf *b)
135 if (b->tmpbuf)
136 free(b->tmpbuf, M_DEVBUF);
138 if (b->shadbuf)
139 free(b->shadbuf, M_DEVBUF);
141 if (b->buf) {
142 if (b->flags & SNDBUF_F_MANAGED) {
143 if (b->buf_addr)
144 bus_dmamap_unload(b->dmatag, b->dmamap);
145 if (b->dmatag)
146 bus_dmamem_free(b->dmatag, b->buf, b->dmamap);
148 free(b->buf, M_DEVBUF);
150 seldrain(sndbuf_getsel(b));
152 b->tmpbuf = NULL;
153 b->shadbuf = NULL;
154 b->buf = NULL;
155 b->sl = 0;
156 b->dmatag = NULL;
157 b->dmamap = NULL;
163 sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz)
168 CHN_LOCK(b->channel);
169 if (b->maxsize == 0)
172 blkcnt = b->blkcnt;
174 blksz = b->blksz;
175 if (blkcnt < 2 || blksz < 16 || (blkcnt * blksz) > b->maxsize) {
176 CHN_UNLOCK(b->channel);
179 if (blkcnt == b->blkcnt && blksz == b->blksz)
184 if (bufsize > b->allocsize ||
185 bufsize < (b->allocsize >> SNDBUF_CACHE_SHIFT)) {
187 CHN_UNLOCK(b->channel);
189 CHN_LOCK(b->channel);
191 printf("%s(): b=%p %p -> %p [%d -> %d : %d]\n",
192 __func__, b, b->tmpbuf, tmpbuf,
193 b->allocsize, allocsize, bufsize);
194 if (b->tmpbuf != NULL)
195 free(b->tmpbuf, M_DEVBUF);
196 b->tmpbuf = tmpbuf;
197 b->allocsize = allocsize;
199 printf("%s(): b=%p %d [%d] NOCHANGE\n",
200 __func__, b, b->allocsize, b->bufsize);
202 b->blkcnt = blkcnt;
203 b->blksz = blksz;
204 b->bufsize = bufsize;
206 sndbuf_reset(b);
208 CHN_UNLOCK(b->channel);
213 sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz)
223 if (bufsize > b->allocsize ||
224 bufsize < (b->allocsize >> SNDBUF_CACHE_SHIFT)) {
226 CHN_UNLOCK(b->channel);
230 CHN_LOCK(b->channel);
231 if (b->buf != NULL)
232 free(b->buf, M_DEVBUF);
233 b->buf = buf;
234 if (b->tmpbuf != NULL)
235 free(b->tmpbuf, M_DEVBUF);
236 b->tmpbuf = tmpbuf;
237 if (b->shadbuf != NULL)
238 free(b->shadbuf, M_DEVBUF);
239 b->shadbuf = shadbuf;
241 printf("%s(): b=%p %d -> %d [%d]\n",
242 __func__, b, b->allocsize, allocsize, bufsize);
243 b->allocsize = allocsize;
245 printf("%s(): b=%p %d [%d] NOCHANGE\n",
246 __func__, b, b->allocsize, b->bufsize);
248 b->blkcnt = blkcnt;
249 b->blksz = blksz;
250 b->bufsize = bufsize;
251 b->maxsize = bufsize;
252 b->sl = bufsize;
254 sndbuf_reset(b);
265 * @param b buffer context
269 sndbuf_clear(struct snd_dbuf *b, unsigned int length)
276 if (length > b->bufsize)
277 length = b->bufsize;
279 data = sndbuf_zerodata(b->fmt);
281 i = sndbuf_getfreeptr(b);
282 p = sndbuf_getbuf(b);
287 if (i >= b->bufsize)
295 * @param b buffer context
298 sndbuf_fillsilence(struct snd_dbuf *b)
300 if (b->bufsize > 0)
301 memset(sndbuf_getbuf(b), sndbuf_zerodata(b->fmt), b->bufsize);
302 b->rp = 0;
303 b->rl = b->bufsize;
307 sndbuf_fillsilence_rl(struct snd_dbuf *b, u_int rl)
309 if (b->bufsize > 0)
310 memset(sndbuf_getbuf(b), sndbuf_zerodata(b->fmt), b->bufsize);
311 b->rp = 0;
312 b->rl = min(b->bufsize, rl);
322 * @param b buffer context
325 sndbuf_softreset(struct snd_dbuf *b)
327 b->rl = 0;
328 if (b->buf && b->bufsize > 0)
329 sndbuf_clear(b, b->bufsize);
333 sndbuf_reset(struct snd_dbuf *b)
335 b->hp = 0;
336 b->rp = 0;
337 b->rl = 0;
338 b->dl = 0;
339 b->prev_total = 0;
340 b->total = 0;
341 b->xrun = 0;
342 if (b->buf && b->bufsize > 0)
343 sndbuf_clear(b, b->bufsize);
344 sndbuf_clearshadow(b);
348 sndbuf_getfmt(struct snd_dbuf *b)
350 return b->fmt;
354 sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt)
356 b->fmt = fmt;
357 b->bps = AFMT_BPS(b->fmt);
358 b->align = AFMT_ALIGN(b->fmt);
363 sndbuf_getspd(struct snd_dbuf *b)
365 return b->spd;
369 sndbuf_setspd(struct snd_dbuf *b, unsigned int spd)
371 b->spd = spd;
375 sndbuf_getalign(struct snd_dbuf *b)
377 return (b->align);
381 sndbuf_getblkcnt(struct snd_dbuf *b)
383 return b->blkcnt;
387 sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt)
389 b->blkcnt = blkcnt;
393 sndbuf_getblksz(struct snd_dbuf *b)
395 return b->blksz;
399 sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz)
401 b->blksz = blksz;
405 sndbuf_getbps(struct snd_dbuf *b)
407 return b->bps;
411 sndbuf_getbuf(struct snd_dbuf *b)
413 return b->buf;
417 sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs)
419 KASSERT(ofs < b->bufsize, ("%s: ofs invalid %d", __func__, ofs));
421 return b->buf + ofs;
425 sndbuf_getsize(struct snd_dbuf *b)
427 return b->bufsize;
431 sndbuf_getmaxsize(struct snd_dbuf *b)
433 return b->maxsize;
437 sndbuf_getallocsize(struct snd_dbuf *b)
439 return b->allocsize;
443 sndbuf_runsz(struct snd_dbuf *b)
445 return b->dl;
449 sndbuf_setrun(struct snd_dbuf *b, int go)
451 b->dl = go? b->blksz : 0;
455 sndbuf_getsel(struct snd_dbuf *b)
457 return &b->sel;
462 sndbuf_getxrun(struct snd_dbuf *b)
464 SNDBUF_LOCKASSERT(b);
466 return b->xrun;
470 sndbuf_setxrun(struct snd_dbuf *b, unsigned int xrun)
472 SNDBUF_LOCKASSERT(b);
474 b->xrun = xrun;
478 sndbuf_gethwptr(struct snd_dbuf *b)
480 SNDBUF_LOCKASSERT(b);
482 return b->hp;
486 sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr)
488 SNDBUF_LOCKASSERT(b);
490 b->hp = ptr;
494 sndbuf_getready(struct snd_dbuf *b)
496 SNDBUF_LOCKASSERT(b);
497 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
499 return b->rl;
503 sndbuf_getreadyptr(struct snd_dbuf *b)
505 SNDBUF_LOCKASSERT(b);
506 KASSERT((b->rp >= 0) && (b->rp <= b->bufsize), ("%s: b->rp invalid %d", __func__, b->rp));
508 return b->rp;
512 sndbuf_getfree(struct snd_dbuf *b)
514 SNDBUF_LOCKASSERT(b);
515 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
517 return b->bufsize - b->rl;
521 sndbuf_getfreeptr(struct snd_dbuf *b)
523 SNDBUF_LOCKASSERT(b);
524 KASSERT((b->rp >= 0) && (b->rp <= b->bufsize), ("%s: b->rp invalid %d", __func__, b->rp));
525 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
527 return (b->rp + b->rl) % b->bufsize;
531 sndbuf_getblocks(struct snd_dbuf *b)
533 SNDBUF_LOCKASSERT(b);
535 return b->total / b->blksz;
539 sndbuf_getprevblocks(struct snd_dbuf *b)
541 SNDBUF_LOCKASSERT(b);
543 return b->prev_total / b->blksz;
547 sndbuf_gettotal(struct snd_dbuf *b)
549 SNDBUF_LOCKASSERT(b);
551 return b->total;
555 sndbuf_getprevtotal(struct snd_dbuf *b)
557 SNDBUF_LOCKASSERT(b);
559 return b->prev_total;
563 sndbuf_updateprevtotal(struct snd_dbuf *b)
565 SNDBUF_LOCKASSERT(b);
567 b->prev_total = b->total;
601 * @param b audio buffer
608 sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count)
612 KASSERT(count <= sndbuf_getfree(b), ("%s: count %d > free %d", __func__, count, sndbuf_getfree(b)));
613 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
614 b->total += count;
617 l = min(count, sndbuf_getsize(b) - sndbuf_getfreeptr(b));
618 bcopy(from, sndbuf_getbufofs(b, sndbuf_getfreeptr(b)), l);
620 b->rl += l;
624 b->rl += count;
625 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d, count %d", __func__, b->rl, count));
638 * @param b PCM channel sound buffer
645 sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count)
649 KASSERT(count <= sndbuf_getready(b), ("%s: count %d > ready %d", __func__, count, sndbuf_getready(b)));
650 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
653 l = min(count, sndbuf_getsize(b) - sndbuf_getreadyptr(b));
654 bcopy(sndbuf_getbufofs(b, sndbuf_getreadyptr(b)), to, l);
656 b->rl -= l;
657 b->rp = (b->rp + l) % b->bufsize;
661 b->rl -= count;
662 b->rp = (b->rp + count) % b->bufsize;
664 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d, count %d", __func__, b->rl, count));
723 sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what)
727 printf(" bufsize: %d, maxsize: %d", b->bufsize, b->maxsize);
729 printf(" dl: %d, rp: %d, rl: %d, hp: %d", b->dl, b->rp, b->rl, b->hp);
731 printf(" total: %ju, prev_total: %ju, xrun: %d", (uintmax_t)b->total, (uintmax_t)b->prev_total, b->xrun);
733 printf(" fmt: 0x%x, spd: %d", b->fmt, b->spd);
735 printf(" blksz: %d, blkcnt: %d, flags: 0x%x", b->blksz, b->blkcnt, b->flags);
741 sndbuf_getflags(struct snd_dbuf *b)
743 return b->flags;
747 sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on)
749 b->flags &= ~flags;
751 b->flags |= flags;
757 * @param b buffer to clear
760 sndbuf_clearshadow(struct snd_dbuf *b)
762 KASSERT(b != NULL, ("b is a null pointer"));
763 KASSERT(b->sl >= 0, ("illegal shadow length"));
765 if ((b->shadbuf != NULL) && (b->sl > 0))
766 memset(b->shadbuf, sndbuf_zerodata(b->fmt), b->sl);
779 * @param b buffer to analyze
784 sndbuf_getpeaks(struct snd_dbuf *b, int *lp, int *rp)