1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <dev/sound/pcm/sound.h>
28
29#include "feeder_if.h"
30
| 1/*-
2 * Copyright (c) 1999 Cameron Grant <cg@freebsd.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#include <dev/sound/pcm/sound.h>
28
29#include "feeder_if.h"
30
|
32
33struct snd_dbuf *
34sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel)
35{
36 struct snd_dbuf *b;
37
38 b = malloc(sizeof(*b), M_DEVBUF, M_WAITOK | M_ZERO);
39 snprintf(b->name, SNDBUF_NAMELEN, "%s:%s", drv, desc);
40 b->dev = dev;
41 b->channel = channel;
42
43 return b;
44}
45
46void
47sndbuf_destroy(struct snd_dbuf *b)
48{
49 free(b, M_DEVBUF);
50}
51
52bus_addr_t
53sndbuf_getbufaddr(struct snd_dbuf *buf)
54{
55 return (buf->buf_addr);
56}
57
58static void
59sndbuf_setmap(void *arg, bus_dma_segment_t *segs, int nseg, int error)
60{
61 struct snd_dbuf *b = (struct snd_dbuf *)arg;
62
63 if (bootverbose) {
64 device_printf(b->dev, "sndbuf_setmap %lx, %lx; ",
65 (u_long)segs[0].ds_addr, (u_long)segs[0].ds_len);
66 printf("%p -> %lx\n", b->buf, (u_long)segs[0].ds_addr);
67 }
68 if (error == 0)
69 b->buf_addr = segs[0].ds_addr;
70 else
71 b->buf_addr = 0;
72}
73
74/*
75 * Allocate memory for DMA buffer. If the device does not use DMA transfers,
76 * the driver can call malloc(9) and sndbuf_setup() itself.
77 */
78
79int
80sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size)
81{
82 int ret;
83
84 b->dmatag = dmatag;
85 b->maxsize = size;
86 b->bufsize = b->maxsize;
87 b->buf_addr = 0;
88 if (bus_dmamem_alloc(b->dmatag, (void **)&b->buf, BUS_DMA_NOWAIT,
89 &b->dmamap))
90 return (ENOMEM);
91 if (bus_dmamap_load(b->dmatag, b->dmamap, b->buf, b->maxsize,
92 sndbuf_setmap, b, 0) != 0 || b->buf_addr == 0) {
93 bus_dmamem_free(b->dmatag, b->buf, b->dmamap);
94 b->dmamap = NULL;
95 return (ENOMEM);
96 }
97
98 ret = sndbuf_resize(b, 2, b->maxsize / 2);
99 if (ret != 0)
100 sndbuf_free(b);
101 return (ret);
102}
103
104int
105sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size)
106{
107 b->buf = buf;
108 b->maxsize = size;
109 b->bufsize = b->maxsize;
110 return sndbuf_resize(b, 2, b->maxsize / 2);
111}
112
113void
114sndbuf_free(struct snd_dbuf *b)
115{
116 if (b->tmpbuf)
117 free(b->tmpbuf, M_DEVBUF);
118 b->tmpbuf = NULL;
119
120 if (b->dmamap)
121 bus_dmamap_unload(b->dmatag, b->dmamap);
122
123 if (b->dmamap && b->buf)
124 bus_dmamem_free(b->dmatag, b->buf, b->dmamap);
125 b->dmamap = NULL;
126 b->buf = NULL;
127}
128
129int
130sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz)
131{
132 u_int8_t *tmpbuf, *f2;
133
134 chn_lock(b->channel);
135 if (b->maxsize == 0)
136 goto out;
137 if (blkcnt == 0)
138 blkcnt = b->blkcnt;
139 if (blksz == 0)
140 blksz = b->blksz;
141 if (blkcnt < 2 || blksz < 16 || (blkcnt * blksz > b->maxsize)) {
142 chn_unlock(b->channel);
143 return EINVAL;
144 }
145 if (blkcnt == b->blkcnt && blksz == b->blksz)
146 goto out;
147
148 chn_unlock(b->channel);
149 tmpbuf = malloc(blkcnt * blksz, M_DEVBUF, M_NOWAIT);
150 if (tmpbuf == NULL)
151 return ENOMEM;
152 chn_lock(b->channel);
153 b->blkcnt = blkcnt;
154 b->blksz = blksz;
155 b->bufsize = blkcnt * blksz;
156 f2 = b->tmpbuf;
157 b->tmpbuf = tmpbuf;
158 sndbuf_reset(b);
159 chn_unlock(b->channel);
160 free(f2, M_DEVBUF);
161 return 0;
162out:
163 chn_unlock(b->channel);
164 return 0;
165}
166
167int
168sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz)
169{
170 u_int8_t *buf, *tmpbuf, *f1, *f2;
171 unsigned int bufsize;
172 int ret;
173
174 if (blkcnt < 2 || blksz < 16)
175 return EINVAL;
176
177 bufsize = blksz * blkcnt;
178
179 chn_unlock(b->channel);
180 buf = malloc(bufsize, M_DEVBUF, M_WAITOK);
181 if (buf == NULL) {
182 ret = ENOMEM;
183 goto out;
184 }
185
186 tmpbuf = malloc(bufsize, M_DEVBUF, M_WAITOK);
187 if (tmpbuf == NULL) {
188 free(buf, M_DEVBUF);
189 ret = ENOMEM;
190 goto out;
191 }
192 chn_lock(b->channel);
193
194 b->blkcnt = blkcnt;
195 b->blksz = blksz;
196 b->bufsize = bufsize;
197 b->maxsize = bufsize;
198 f1 = b->buf;
199 f2 = b->tmpbuf;
200 b->buf = buf;
201 b->tmpbuf = tmpbuf;
202
203 sndbuf_reset(b);
204
205 chn_unlock(b->channel);
206 if (f1)
207 free(f1, M_DEVBUF);
208 if (f2)
209 free(f2, M_DEVBUF);
210
211 ret = 0;
212out:
213 chn_lock(b->channel);
214 return ret;
215}
216
217void
218sndbuf_clear(struct snd_dbuf *b, unsigned int length)
219{
220 int i;
221 u_char data, *p;
222
223 if (length == 0)
224 return;
225 if (length > b->bufsize)
226 length = b->bufsize;
227
228 if (b->fmt & AFMT_SIGNED)
229 data = 0x00;
230 else
231 data = 0x80;
232
233 i = sndbuf_getfreeptr(b);
234 p = sndbuf_getbuf(b);
235 while (length > 0) {
236 p[i] = data;
237 length--;
238 i++;
239 if (i >= b->bufsize)
240 i = 0;
241 }
242}
243
244void
245sndbuf_fillsilence(struct snd_dbuf *b)
246{
247 int i;
248 u_char data, *p;
249
250 if (b->fmt & AFMT_SIGNED)
251 data = 0x00;
252 else
253 data = 0x80;
254
255 i = 0;
256 p = sndbuf_getbuf(b);
257 while (i < b->bufsize)
258 p[i++] = data;
259 b->rp = 0;
260 b->rl = b->bufsize;
261}
262
263void
264sndbuf_reset(struct snd_dbuf *b)
265{
266 b->hp = 0;
267 b->rp = 0;
268 b->rl = 0;
269 b->dl = 0;
270 b->prev_total = 0;
271 b->total = 0;
272 b->xrun = 0;
273 if (b->buf && b->bufsize > 0)
274 sndbuf_clear(b, b->bufsize);
275}
276
277u_int32_t
278sndbuf_getfmt(struct snd_dbuf *b)
279{
280 return b->fmt;
281}
282
283int
284sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt)
285{
286 b->fmt = fmt;
287 b->bps = 1;
288 b->bps <<= (b->fmt & AFMT_STEREO)? 1 : 0;
| 32
33struct snd_dbuf *
34sndbuf_create(device_t dev, char *drv, char *desc, struct pcm_channel *channel)
35{
36 struct snd_dbuf *b;
37
38 b = malloc(sizeof(*b), M_DEVBUF, M_WAITOK | M_ZERO);
39 snprintf(b->name, SNDBUF_NAMELEN, "%s:%s", drv, desc);
40 b->dev = dev;
41 b->channel = channel;
42
43 return b;
44}
45
46void
47sndbuf_destroy(struct snd_dbuf *b)
48{
49 free(b, M_DEVBUF);
50}
51
52bus_addr_t
53sndbuf_getbufaddr(struct snd_dbuf *buf)
54{
55 return (buf->buf_addr);
56}
57
58static void
59sndbuf_setmap(void *arg, bus_dma_segment_t *segs, int nseg, int error)
60{
61 struct snd_dbuf *b = (struct snd_dbuf *)arg;
62
63 if (bootverbose) {
64 device_printf(b->dev, "sndbuf_setmap %lx, %lx; ",
65 (u_long)segs[0].ds_addr, (u_long)segs[0].ds_len);
66 printf("%p -> %lx\n", b->buf, (u_long)segs[0].ds_addr);
67 }
68 if (error == 0)
69 b->buf_addr = segs[0].ds_addr;
70 else
71 b->buf_addr = 0;
72}
73
74/*
75 * Allocate memory for DMA buffer. If the device does not use DMA transfers,
76 * the driver can call malloc(9) and sndbuf_setup() itself.
77 */
78
79int
80sndbuf_alloc(struct snd_dbuf *b, bus_dma_tag_t dmatag, unsigned int size)
81{
82 int ret;
83
84 b->dmatag = dmatag;
85 b->maxsize = size;
86 b->bufsize = b->maxsize;
87 b->buf_addr = 0;
88 if (bus_dmamem_alloc(b->dmatag, (void **)&b->buf, BUS_DMA_NOWAIT,
89 &b->dmamap))
90 return (ENOMEM);
91 if (bus_dmamap_load(b->dmatag, b->dmamap, b->buf, b->maxsize,
92 sndbuf_setmap, b, 0) != 0 || b->buf_addr == 0) {
93 bus_dmamem_free(b->dmatag, b->buf, b->dmamap);
94 b->dmamap = NULL;
95 return (ENOMEM);
96 }
97
98 ret = sndbuf_resize(b, 2, b->maxsize / 2);
99 if (ret != 0)
100 sndbuf_free(b);
101 return (ret);
102}
103
104int
105sndbuf_setup(struct snd_dbuf *b, void *buf, unsigned int size)
106{
107 b->buf = buf;
108 b->maxsize = size;
109 b->bufsize = b->maxsize;
110 return sndbuf_resize(b, 2, b->maxsize / 2);
111}
112
113void
114sndbuf_free(struct snd_dbuf *b)
115{
116 if (b->tmpbuf)
117 free(b->tmpbuf, M_DEVBUF);
118 b->tmpbuf = NULL;
119
120 if (b->dmamap)
121 bus_dmamap_unload(b->dmatag, b->dmamap);
122
123 if (b->dmamap && b->buf)
124 bus_dmamem_free(b->dmatag, b->buf, b->dmamap);
125 b->dmamap = NULL;
126 b->buf = NULL;
127}
128
129int
130sndbuf_resize(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz)
131{
132 u_int8_t *tmpbuf, *f2;
133
134 chn_lock(b->channel);
135 if (b->maxsize == 0)
136 goto out;
137 if (blkcnt == 0)
138 blkcnt = b->blkcnt;
139 if (blksz == 0)
140 blksz = b->blksz;
141 if (blkcnt < 2 || blksz < 16 || (blkcnt * blksz > b->maxsize)) {
142 chn_unlock(b->channel);
143 return EINVAL;
144 }
145 if (blkcnt == b->blkcnt && blksz == b->blksz)
146 goto out;
147
148 chn_unlock(b->channel);
149 tmpbuf = malloc(blkcnt * blksz, M_DEVBUF, M_NOWAIT);
150 if (tmpbuf == NULL)
151 return ENOMEM;
152 chn_lock(b->channel);
153 b->blkcnt = blkcnt;
154 b->blksz = blksz;
155 b->bufsize = blkcnt * blksz;
156 f2 = b->tmpbuf;
157 b->tmpbuf = tmpbuf;
158 sndbuf_reset(b);
159 chn_unlock(b->channel);
160 free(f2, M_DEVBUF);
161 return 0;
162out:
163 chn_unlock(b->channel);
164 return 0;
165}
166
167int
168sndbuf_remalloc(struct snd_dbuf *b, unsigned int blkcnt, unsigned int blksz)
169{
170 u_int8_t *buf, *tmpbuf, *f1, *f2;
171 unsigned int bufsize;
172 int ret;
173
174 if (blkcnt < 2 || blksz < 16)
175 return EINVAL;
176
177 bufsize = blksz * blkcnt;
178
179 chn_unlock(b->channel);
180 buf = malloc(bufsize, M_DEVBUF, M_WAITOK);
181 if (buf == NULL) {
182 ret = ENOMEM;
183 goto out;
184 }
185
186 tmpbuf = malloc(bufsize, M_DEVBUF, M_WAITOK);
187 if (tmpbuf == NULL) {
188 free(buf, M_DEVBUF);
189 ret = ENOMEM;
190 goto out;
191 }
192 chn_lock(b->channel);
193
194 b->blkcnt = blkcnt;
195 b->blksz = blksz;
196 b->bufsize = bufsize;
197 b->maxsize = bufsize;
198 f1 = b->buf;
199 f2 = b->tmpbuf;
200 b->buf = buf;
201 b->tmpbuf = tmpbuf;
202
203 sndbuf_reset(b);
204
205 chn_unlock(b->channel);
206 if (f1)
207 free(f1, M_DEVBUF);
208 if (f2)
209 free(f2, M_DEVBUF);
210
211 ret = 0;
212out:
213 chn_lock(b->channel);
214 return ret;
215}
216
217void
218sndbuf_clear(struct snd_dbuf *b, unsigned int length)
219{
220 int i;
221 u_char data, *p;
222
223 if (length == 0)
224 return;
225 if (length > b->bufsize)
226 length = b->bufsize;
227
228 if (b->fmt & AFMT_SIGNED)
229 data = 0x00;
230 else
231 data = 0x80;
232
233 i = sndbuf_getfreeptr(b);
234 p = sndbuf_getbuf(b);
235 while (length > 0) {
236 p[i] = data;
237 length--;
238 i++;
239 if (i >= b->bufsize)
240 i = 0;
241 }
242}
243
244void
245sndbuf_fillsilence(struct snd_dbuf *b)
246{
247 int i;
248 u_char data, *p;
249
250 if (b->fmt & AFMT_SIGNED)
251 data = 0x00;
252 else
253 data = 0x80;
254
255 i = 0;
256 p = sndbuf_getbuf(b);
257 while (i < b->bufsize)
258 p[i++] = data;
259 b->rp = 0;
260 b->rl = b->bufsize;
261}
262
263void
264sndbuf_reset(struct snd_dbuf *b)
265{
266 b->hp = 0;
267 b->rp = 0;
268 b->rl = 0;
269 b->dl = 0;
270 b->prev_total = 0;
271 b->total = 0;
272 b->xrun = 0;
273 if (b->buf && b->bufsize > 0)
274 sndbuf_clear(b, b->bufsize);
275}
276
277u_int32_t
278sndbuf_getfmt(struct snd_dbuf *b)
279{
280 return b->fmt;
281}
282
283int
284sndbuf_setfmt(struct snd_dbuf *b, u_int32_t fmt)
285{
286 b->fmt = fmt;
287 b->bps = 1;
288 b->bps <<= (b->fmt & AFMT_STEREO)? 1 : 0;
|
291 return 0;
292}
293
294unsigned int
295sndbuf_getspd(struct snd_dbuf *b)
296{
297 return b->spd;
298}
299
300void
301sndbuf_setspd(struct snd_dbuf *b, unsigned int spd)
302{
303 b->spd = spd;
304}
305
306unsigned int
307sndbuf_getalign(struct snd_dbuf *b)
308{
309 static int align[] = {0, 1, 1, 2, 2, 2, 2, 3};
310
311 return align[b->bps - 1];
312}
313
314unsigned int
315sndbuf_getblkcnt(struct snd_dbuf *b)
316{
317 return b->blkcnt;
318}
319
320void
321sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt)
322{
323 b->blkcnt = blkcnt;
324}
325
326unsigned int
327sndbuf_getblksz(struct snd_dbuf *b)
328{
329 return b->blksz;
330}
331
332void
333sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz)
334{
335 b->blksz = blksz;
336}
337
338unsigned int
339sndbuf_getbps(struct snd_dbuf *b)
340{
341 return b->bps;
342}
343
344void *
345sndbuf_getbuf(struct snd_dbuf *b)
346{
347 return b->buf;
348}
349
350void *
351sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs)
352{
353 KASSERT(ofs < b->bufsize, ("%s: ofs invalid %d", __func__, ofs));
354
355 return b->buf + ofs;
356}
357
358unsigned int
359sndbuf_getsize(struct snd_dbuf *b)
360{
361 return b->bufsize;
362}
363
364unsigned int
365sndbuf_getmaxsize(struct snd_dbuf *b)
366{
367 return b->maxsize;
368}
369
370unsigned int
371sndbuf_runsz(struct snd_dbuf *b)
372{
373 return b->dl;
374}
375
376void
377sndbuf_setrun(struct snd_dbuf *b, int go)
378{
379 b->dl = go? b->blksz : 0;
380}
381
382struct selinfo *
383sndbuf_getsel(struct snd_dbuf *b)
384{
385 return &b->sel;
386}
387
388/************************************************************/
389unsigned int
390sndbuf_getxrun(struct snd_dbuf *b)
391{
392 SNDBUF_LOCKASSERT(b);
393
394 return b->xrun;
395}
396
397void
398sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt)
399{
400 SNDBUF_LOCKASSERT(b);
401
402 b->xrun = cnt;
403}
404
405unsigned int
406sndbuf_gethwptr(struct snd_dbuf *b)
407{
408 SNDBUF_LOCKASSERT(b);
409
410 return b->hp;
411}
412
413void
414sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr)
415{
416 SNDBUF_LOCKASSERT(b);
417
418 b->hp = ptr;
419}
420
421unsigned int
422sndbuf_getready(struct snd_dbuf *b)
423{
424 SNDBUF_LOCKASSERT(b);
425 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
426
427 return b->rl;
428}
429
430unsigned int
431sndbuf_getreadyptr(struct snd_dbuf *b)
432{
433 SNDBUF_LOCKASSERT(b);
434 KASSERT((b->rp >= 0) && (b->rp <= b->bufsize), ("%s: b->rp invalid %d", __func__, b->rp));
435
436 return b->rp;
437}
438
439unsigned int
440sndbuf_getfree(struct snd_dbuf *b)
441{
442 SNDBUF_LOCKASSERT(b);
443 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
444
445 return b->bufsize - b->rl;
446}
447
448unsigned int
449sndbuf_getfreeptr(struct snd_dbuf *b)
450{
451 SNDBUF_LOCKASSERT(b);
452 KASSERT((b->rp >= 0) && (b->rp <= b->bufsize), ("%s: b->rp invalid %d", __func__, b->rp));
453 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
454
455 return (b->rp + b->rl) % b->bufsize;
456}
457
458unsigned int
459sndbuf_getblocks(struct snd_dbuf *b)
460{
461 SNDBUF_LOCKASSERT(b);
462
463 return b->total / b->blksz;
464}
465
466unsigned int
467sndbuf_getprevblocks(struct snd_dbuf *b)
468{
469 SNDBUF_LOCKASSERT(b);
470
471 return b->prev_total / b->blksz;
472}
473
474unsigned int
475sndbuf_gettotal(struct snd_dbuf *b)
476{
477 SNDBUF_LOCKASSERT(b);
478
479 return b->total;
480}
481
482void
483sndbuf_updateprevtotal(struct snd_dbuf *b)
484{
485 SNDBUF_LOCKASSERT(b);
486
487 b->prev_total = b->total;
488}
489
490/************************************************************/
491
492int
493sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count)
494{
495 int l;
496
497 KASSERT(count <= sndbuf_getfree(b), ("%s: count %d > free %d", __func__, count, sndbuf_getfree(b)));
498 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
499 b->total += count;
500 if (from != NULL) {
501 while (count > 0) {
502 l = MIN(count, sndbuf_getsize(b) - sndbuf_getfreeptr(b));
503 bcopy(from, sndbuf_getbufofs(b, sndbuf_getfreeptr(b)), l);
504 from += l;
505 b->rl += l;
506 count -= l;
507 }
508 } else
509 b->rl += count;
510 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d, count %d", __func__, b->rl, count));
511
512 return 0;
513}
514
515int
516sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count)
517{
518 int l;
519
520 KASSERT(count <= sndbuf_getready(b), ("%s: count %d > ready %d", __func__, count, sndbuf_getready(b)));
521 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
522 if (to != NULL) {
523 while (count > 0) {
524 l = MIN(count, sndbuf_getsize(b) - sndbuf_getreadyptr(b));
525 bcopy(sndbuf_getbufofs(b, sndbuf_getreadyptr(b)), to, l);
526 to += l;
527 b->rl -= l;
528 b->rp = (b->rp + l) % b->bufsize;
529 count -= l;
530 }
531 } else {
532 b->rl -= count;
533 b->rp = (b->rp + count) % b->bufsize;
534 }
535 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d, count %d", __func__, b->rl, count));
536
537 return 0;
538}
539
540/* count is number of bytes we want added to destination buffer */
541int
542sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count)
543{
544 KASSERT(count > 0, ("can't feed 0 bytes"));
545
546 if (sndbuf_getfree(to) < count)
547 return EINVAL;
548
549 count = FEEDER_FEED(feeder, channel, to->tmpbuf, count, from);
550 if (count)
551 sndbuf_acquire(to, to->tmpbuf, count);
552 /* the root feeder has called sndbuf_dispose(from, , bytes fetched) */
553
554 return 0;
555}
556
557/************************************************************/
558
559void
560sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what)
561{
562 printf("%s: [", s);
563 if (what & 0x01)
564 printf(" bufsize: %d, maxsize: %d", b->bufsize, b->maxsize);
565 if (what & 0x02)
566 printf(" dl: %d, rp: %d, rl: %d, hp: %d", b->dl, b->rp, b->rl, b->hp);
567 if (what & 0x04)
568 printf(" total: %d, prev_total: %d, xrun: %d", b->total, b->prev_total, b->xrun);
569 if (what & 0x08)
570 printf(" fmt: 0x%x, spd: %d", b->fmt, b->spd);
571 if (what & 0x10)
572 printf(" blksz: %d, blkcnt: %d, flags: 0x%x", b->blksz, b->blkcnt, b->flags);
573 printf(" ]\n");
574}
575
576/************************************************************/
577u_int32_t
578sndbuf_getflags(struct snd_dbuf *b)
579{
580 return b->flags;
581}
582
583void
584sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on)
585{
586 b->flags &= ~flags;
587 if (on)
588 b->flags |= flags;
589}
590
| 295 return 0;
296}
297
298unsigned int
299sndbuf_getspd(struct snd_dbuf *b)
300{
301 return b->spd;
302}
303
304void
305sndbuf_setspd(struct snd_dbuf *b, unsigned int spd)
306{
307 b->spd = spd;
308}
309
310unsigned int
311sndbuf_getalign(struct snd_dbuf *b)
312{
313 static int align[] = {0, 1, 1, 2, 2, 2, 2, 3};
314
315 return align[b->bps - 1];
316}
317
318unsigned int
319sndbuf_getblkcnt(struct snd_dbuf *b)
320{
321 return b->blkcnt;
322}
323
324void
325sndbuf_setblkcnt(struct snd_dbuf *b, unsigned int blkcnt)
326{
327 b->blkcnt = blkcnt;
328}
329
330unsigned int
331sndbuf_getblksz(struct snd_dbuf *b)
332{
333 return b->blksz;
334}
335
336void
337sndbuf_setblksz(struct snd_dbuf *b, unsigned int blksz)
338{
339 b->blksz = blksz;
340}
341
342unsigned int
343sndbuf_getbps(struct snd_dbuf *b)
344{
345 return b->bps;
346}
347
348void *
349sndbuf_getbuf(struct snd_dbuf *b)
350{
351 return b->buf;
352}
353
354void *
355sndbuf_getbufofs(struct snd_dbuf *b, unsigned int ofs)
356{
357 KASSERT(ofs < b->bufsize, ("%s: ofs invalid %d", __func__, ofs));
358
359 return b->buf + ofs;
360}
361
362unsigned int
363sndbuf_getsize(struct snd_dbuf *b)
364{
365 return b->bufsize;
366}
367
368unsigned int
369sndbuf_getmaxsize(struct snd_dbuf *b)
370{
371 return b->maxsize;
372}
373
374unsigned int
375sndbuf_runsz(struct snd_dbuf *b)
376{
377 return b->dl;
378}
379
380void
381sndbuf_setrun(struct snd_dbuf *b, int go)
382{
383 b->dl = go? b->blksz : 0;
384}
385
386struct selinfo *
387sndbuf_getsel(struct snd_dbuf *b)
388{
389 return &b->sel;
390}
391
392/************************************************************/
393unsigned int
394sndbuf_getxrun(struct snd_dbuf *b)
395{
396 SNDBUF_LOCKASSERT(b);
397
398 return b->xrun;
399}
400
401void
402sndbuf_setxrun(struct snd_dbuf *b, unsigned int cnt)
403{
404 SNDBUF_LOCKASSERT(b);
405
406 b->xrun = cnt;
407}
408
409unsigned int
410sndbuf_gethwptr(struct snd_dbuf *b)
411{
412 SNDBUF_LOCKASSERT(b);
413
414 return b->hp;
415}
416
417void
418sndbuf_sethwptr(struct snd_dbuf *b, unsigned int ptr)
419{
420 SNDBUF_LOCKASSERT(b);
421
422 b->hp = ptr;
423}
424
425unsigned int
426sndbuf_getready(struct snd_dbuf *b)
427{
428 SNDBUF_LOCKASSERT(b);
429 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
430
431 return b->rl;
432}
433
434unsigned int
435sndbuf_getreadyptr(struct snd_dbuf *b)
436{
437 SNDBUF_LOCKASSERT(b);
438 KASSERT((b->rp >= 0) && (b->rp <= b->bufsize), ("%s: b->rp invalid %d", __func__, b->rp));
439
440 return b->rp;
441}
442
443unsigned int
444sndbuf_getfree(struct snd_dbuf *b)
445{
446 SNDBUF_LOCKASSERT(b);
447 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
448
449 return b->bufsize - b->rl;
450}
451
452unsigned int
453sndbuf_getfreeptr(struct snd_dbuf *b)
454{
455 SNDBUF_LOCKASSERT(b);
456 KASSERT((b->rp >= 0) && (b->rp <= b->bufsize), ("%s: b->rp invalid %d", __func__, b->rp));
457 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
458
459 return (b->rp + b->rl) % b->bufsize;
460}
461
462unsigned int
463sndbuf_getblocks(struct snd_dbuf *b)
464{
465 SNDBUF_LOCKASSERT(b);
466
467 return b->total / b->blksz;
468}
469
470unsigned int
471sndbuf_getprevblocks(struct snd_dbuf *b)
472{
473 SNDBUF_LOCKASSERT(b);
474
475 return b->prev_total / b->blksz;
476}
477
478unsigned int
479sndbuf_gettotal(struct snd_dbuf *b)
480{
481 SNDBUF_LOCKASSERT(b);
482
483 return b->total;
484}
485
486void
487sndbuf_updateprevtotal(struct snd_dbuf *b)
488{
489 SNDBUF_LOCKASSERT(b);
490
491 b->prev_total = b->total;
492}
493
494/************************************************************/
495
496int
497sndbuf_acquire(struct snd_dbuf *b, u_int8_t *from, unsigned int count)
498{
499 int l;
500
501 KASSERT(count <= sndbuf_getfree(b), ("%s: count %d > free %d", __func__, count, sndbuf_getfree(b)));
502 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
503 b->total += count;
504 if (from != NULL) {
505 while (count > 0) {
506 l = MIN(count, sndbuf_getsize(b) - sndbuf_getfreeptr(b));
507 bcopy(from, sndbuf_getbufofs(b, sndbuf_getfreeptr(b)), l);
508 from += l;
509 b->rl += l;
510 count -= l;
511 }
512 } else
513 b->rl += count;
514 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d, count %d", __func__, b->rl, count));
515
516 return 0;
517}
518
519int
520sndbuf_dispose(struct snd_dbuf *b, u_int8_t *to, unsigned int count)
521{
522 int l;
523
524 KASSERT(count <= sndbuf_getready(b), ("%s: count %d > ready %d", __func__, count, sndbuf_getready(b)));
525 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d", __func__, b->rl));
526 if (to != NULL) {
527 while (count > 0) {
528 l = MIN(count, sndbuf_getsize(b) - sndbuf_getreadyptr(b));
529 bcopy(sndbuf_getbufofs(b, sndbuf_getreadyptr(b)), to, l);
530 to += l;
531 b->rl -= l;
532 b->rp = (b->rp + l) % b->bufsize;
533 count -= l;
534 }
535 } else {
536 b->rl -= count;
537 b->rp = (b->rp + count) % b->bufsize;
538 }
539 KASSERT((b->rl >= 0) && (b->rl <= b->bufsize), ("%s: b->rl invalid %d, count %d", __func__, b->rl, count));
540
541 return 0;
542}
543
544/* count is number of bytes we want added to destination buffer */
545int
546sndbuf_feed(struct snd_dbuf *from, struct snd_dbuf *to, struct pcm_channel *channel, struct pcm_feeder *feeder, unsigned int count)
547{
548 KASSERT(count > 0, ("can't feed 0 bytes"));
549
550 if (sndbuf_getfree(to) < count)
551 return EINVAL;
552
553 count = FEEDER_FEED(feeder, channel, to->tmpbuf, count, from);
554 if (count)
555 sndbuf_acquire(to, to->tmpbuf, count);
556 /* the root feeder has called sndbuf_dispose(from, , bytes fetched) */
557
558 return 0;
559}
560
561/************************************************************/
562
563void
564sndbuf_dump(struct snd_dbuf *b, char *s, u_int32_t what)
565{
566 printf("%s: [", s);
567 if (what & 0x01)
568 printf(" bufsize: %d, maxsize: %d", b->bufsize, b->maxsize);
569 if (what & 0x02)
570 printf(" dl: %d, rp: %d, rl: %d, hp: %d", b->dl, b->rp, b->rl, b->hp);
571 if (what & 0x04)
572 printf(" total: %d, prev_total: %d, xrun: %d", b->total, b->prev_total, b->xrun);
573 if (what & 0x08)
574 printf(" fmt: 0x%x, spd: %d", b->fmt, b->spd);
575 if (what & 0x10)
576 printf(" blksz: %d, blkcnt: %d, flags: 0x%x", b->blksz, b->blkcnt, b->flags);
577 printf(" ]\n");
578}
579
580/************************************************************/
581u_int32_t
582sndbuf_getflags(struct snd_dbuf *b)
583{
584 return b->flags;
585}
586
587void
588sndbuf_setflags(struct snd_dbuf *b, u_int32_t flags, int on)
589{
590 b->flags &= ~flags;
591 if (on)
592 b->flags |= flags;
593}
594
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