source: sbliveos2/trunk/sblive/cardwo.c@ 151

Last change on this file since 151 was 142, checked in by ktk, 25 years ago

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1/* $Id: cardwo.c 142 2000-04-23 14:55:46Z ktk $ */
2
3/*
4 **********************************************************************
5 * cardwo.c - PCM output HAL for emu10k1 driver
6 * Copyright 1999, 2000 Creative Labs, Inc.
7 *
8 **********************************************************************
9 *
10 * Date Author Summary of changes
11 * ---- ------ ------------------
12 * October 20, 1999 Bertrand Lee base code release
13 *
14 **********************************************************************
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License as
18 * published by the Free Software Foundation; either version 2 of
19 * the License, or (at your option) any later version.
20 *
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
25 *
26 * You should have received a copy of the GNU General Public
27 * License along with this program; if not, write to the Free
28 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139,
29 * USA.
30 *
31 **********************************************************************
32 */
33
34#include "hwaccess.h"
35#include "cardwo.h"
36#include "audio.h"
37
38/* Volume calcs */
39
40static int set_volume_instance(struct emu10k1_waveout *card_waveout, struct wave_out *wave_out, struct voice_param *left)
41{
42 /* only applicable for playback */
43 u32 volL, volR, vol = 0;
44
45 volL = (wave_out->localvol & 0xffff);
46 volR = ((wave_out->localvol >> 16) & 0xffff);
47
48 if (wave_out->globalvolFactor) {
49 volL = ((u32) (((u16) card_waveout->globalvol & 0xffff) * (u16) volL)) / 0xffff;
50 volR = ((u32) (((u16) (card_waveout->globalvol >> 16) & 0xffff) * ((u16) volR))) / 0xffff;
51 }
52
53 /* BIG ASSUMPTION HERE THAT DEFAULT WAVE PAN/AUX IS 0xff/0xff */
54 /* New volume and pan */
55
56 if (volL == volR) {
57 vol = volL;
58 left->send_c = 0xff;
59 left->send_b = 0xff;
60 } else {
61 if (volL > volR) {
62 vol = volL;
63 left->send_c = 0xff;
64 left->send_b = (char) ((volR * 255) / vol);
65 } else {
66 vol = volR;
67 left->send_b = 0xff;
68 left->send_c = (char) ((volL * 255) / vol);
69 }
70 }
71
72 left->initial_attn = 0xff & sumVolumeToAttenuation(vol * 2);
73
74 return vol;
75}
76
77static void query_format(struct wave_format *wave_fmt)
78{
79 if ((wave_fmt->channels != 1) && (wave_fmt->channels != 2))
80 wave_fmt->channels = 2;
81
82 if (wave_fmt->samplingrate >= 0x2EE00)
83 wave_fmt->samplingrate = 0x2EE00;
84
85 if ((wave_fmt->bitsperchannel != 8) && (wave_fmt->bitsperchannel != 16))
86 wave_fmt->bitsperchannel = 16;
87
88 return;
89}
90
91static int alloc_xferbuffer(struct emu10k1_card *card, struct wave_out *wave_out, u32 * size, void ***buffer)
92{
93 u32 numpages, reqsize, pageindex, pagecount;
94 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
95 unsigned long busaddx;
96 int i;
97
98 reqsize = *size;
99 numpages = reqsize / PAGE_SIZE;
100
101 /* If size is not a multiple of PAGE_SIZE then we need to round up */
102 if (reqsize % PAGE_SIZE)
103 numpages += 1;
104
105 DPD(2, "requested pages is: %d\n", numpages);
106
107 wavexferbuf->numpages = numpages;
108
109 /* Only for playback, request for emu address space */
110 /* Support non page-aligned buffer, don't need interpolation page */
111
112 if ((wave_out->emupageindex = emu10k1_addxmgr_alloc(numpages * PAGE_SIZE, card)) < 0)
113 return CTSTATUS_ERROR;
114
115 if ((wave_out->pagetable = (void **) kmalloc(sizeof(void *) * numpages, GFP_KERNEL)) == NULL)
116 return CTSTATUS_ERROR;
117
118 /* Fill in virtual memory table */
119 for (pagecount = 0; pagecount < numpages; pagecount++) {
120 if ((wave_out->pagetable[pagecount] = (void *) __get_free_page(GFP_KERNEL)) == NULL) {
121 wavexferbuf->numpages = pagecount;
122 return CTSTATUS_ERROR;
123 }
124
125 DPD(2, "Virtual Addx: %p\n", wave_out->pagetable[pagecount]);
126
127 for (i = 0; i < PAGE_SIZE / EMUPAGESIZE; i++) {
128 busaddx = virt_to_bus((u8 *) wave_out->pagetable[pagecount] + i * EMUPAGESIZE);
129
130 DPD(3, "Bus Addx: %lx\n", busaddx);
131
132 pageindex = wave_out->emupageindex + pagecount * PAGE_SIZE / EMUPAGESIZE + i;
133
134 ((u32 *) card->virtualpagetable->virtaddx)[pageindex] = ((u32) busaddx * 2) | pageindex;
135 }
136 }
137
138 *buffer = wave_out->pagetable;
139
140 return CTSTATUS_SUCCESS;
141}
142
143static int get_xferbuffer(struct emu10k1_card *card, struct wave_out *wave_out, u32 * size)
144{
145 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
146 void **buffer;
147
148 wavexferbuf->xferpos = 0;
149 wavexferbuf->silence_xferpos = 0;
150 wavexferbuf->stopposition = 0;
151 wavexferbuf->is_stereo = (wave_out->wave_fmt.channels == 2) ? 1 : 0;
152 wavexferbuf->is_16bit = (wave_out->wave_fmt.bitsperchannel == 16) ? 1 : 0;
153 wavexferbuf->bytespersample = (wavexferbuf->is_stereo + 1) * (wavexferbuf->is_16bit + 1);
154
155 if (alloc_xferbuffer(card, wave_out, size, &buffer) != CTSTATUS_SUCCESS)
156 return CTSTATUS_ERROR;
157
158 /* xferbufsize contains actual transfer buffer size */
159 wavexferbuf->xferbufsize = *size;
160 wavexferbuf->xferbuffer = buffer;
161
162 return CTSTATUS_SUCCESS;
163}
164
165static void dealloc_xferbuffer(struct emu10k1_card *card, struct wave_out *wave_out)
166{
167 u32 pagecount, pageindex;
168 int i;
169
170 if (wave_out->pagetable != NULL) {
171 for (pagecount = 0; pagecount < wave_out->wavexferbuf->numpages; pagecount++) {
172 free_page((unsigned long) wave_out->pagetable[pagecount]);
173
174 for (i = 0; i < PAGE_SIZE / EMUPAGESIZE; i++) {
175 pageindex = wave_out->emupageindex + pagecount * PAGE_SIZE / EMUPAGESIZE + i;
176 ((u32 *) card->virtualpagetable->virtaddx)[pageindex] = (card->silentpage->busaddx * 2) | pageindex;
177 }
178 }
179 kfree(wave_out->pagetable);
180 }
181
182 emu10k1_addxmgr_free(card, wave_out->emupageindex);
183
184 return;
185}
186
187static int get_voice(struct emu10k1_card *card, struct wave_out *wave_out, int device)
188{
189 struct emu10k1_waveout *card_waveout = card->waveout;
190 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
191 struct voice_allocdesc voice_allocdesc;
192 struct voice_param *left, *right;
193 u32 size;
194
195 /* Allocate voices here, if no voices available, return error.
196 * Init voice_allocdesc first.*/
197
198 voice_allocdesc.usage = VOICEMGR_USAGE_PLAYBACK;
199
200 voice_allocdesc.flags = 0;
201
202 if (device == 1)
203 voice_allocdesc.flags |= VOICEMGR_FLAGS_FXRT2;
204
205 if (wave_out->wave_fmt.channels == 1)
206 voice_allocdesc.flags |= VOICEMGR_FLAGS_MONO;
207
208 if (wave_out->wave_fmt.bitsperchannel == 16)
209 voice_allocdesc.flags |= VOICEMGR_FLAGS_16BIT;
210
211 if ((wave_out->voice = emu10k1_voice_alloc(&card->voicemgr, &voice_allocdesc)) == NULL)
212 return CTSTATUS_ERROR;
213
214 /* voice initialization */
215
216 left = &wave_out->voice->params;
217
218 /* Calculate pitch */
219 left->initial_pitch = (u16) (srToPitch(wave_out->wave_fmt.samplingrate) >> 8);
220
221 DPD(2, "Initial pitch --> %x\n", left->initial_pitch);
222
223 /* Easy way out.. gotta calculate value */
224 left->pitch_target = 0;
225 left->volume_target = 0;
226 left->FC_target = 0;
227
228 left->byampl_env_sustain = 0x7f;
229 left->byampl_env_decay = 0x7f;
230
231 if (wave_out->globalreverbFactor) {
232 u8 t = (card_waveout->globalreverb & 0xff) + (wave_out->localreverb & 0xff);
233
234 left->send_a = (t > 255) ? 255 : t;
235 } else {
236 left->send_a = 0;
237 }
238
239 if (wave_out->globalchorusFactor) {
240 u8 t = (card_waveout->globalchorus & 0xff) + (wave_out->localchorus & 0xff);
241
242 left->send_d = (t > 255) ? 255 : t;
243 } else {
244 left->send_d = 0;
245 }
246
247 set_volume_instance(card_waveout, wave_out, left);
248
249 left->pan_target = left->send_c;
250 left->aux_target = left->send_b;
251
252 size = wavexferbuf->xferbufsize / wavexferbuf->bytespersample;
253 left->start = 2 * (wave_out->emupageindex << 11) / wavexferbuf->bytespersample;
254 left->end = left->start + size;
255 left->startloop = left->start;
256 left->endloop = left->end;
257
258 if (wave_out->voice->linked_voice) {
259 DPF(2, "is stereo\n");
260 right = &wave_out->voice->linked_voice->params;
261
262 right->initial_pitch = left->initial_pitch;
263
264 /* Easy way out.. gotta calculate value */
265 right->pitch_target = 0;
266 right->volume_target = 0;
267 right->FC_target = 0;
268
269 right->byampl_env_sustain = 0x7f;
270 right->byampl_env_decay = 0x7f;
271
272 right->send_d = left->send_d;
273 right->send_a = left->send_a;
274
275 /* Left output of right channel is always zero */
276 right->send_c = 0;
277
278 /* Update right channel aux */
279 right->pan_target = 0;
280 right->send_b = left->send_b;
281 right->aux_target = right->send_b;
282
283 /* Zero out right output of left channel */
284 left->send_b = 0;
285 left->aux_target = 0;
286
287 /* Update right channel attenuation */
288 right->initial_attn = left->initial_attn;
289
290 right->start = left->start;
291 right->end = left->end;
292 right->startloop = left->startloop;
293 right->endloop = left->endloop;
294
295 }
296
297 DPD(2, "voice: start=%x, end=%x, startloop=%x, endloop=%x\n", left->start, left->end, left->startloop, left->endloop);
298
299 return CTSTATUS_SUCCESS;
300}
301
302int emu10k1_waveout_open(struct emu10k1_wavedevice *wave_dev)
303{
304 struct emu10k1_card *card = wave_dev->card;
305 struct woinst *woinst = wave_dev->woinst;
306 struct wave_out *wave_out;
307 u32 bytespersec, delay;
308 u32 buffsize;
309
310 DPF(2, "emu10k1_waveout_open()\n");
311
312 if ((wave_out = (struct wave_out *) kmalloc(sizeof(struct wave_out), GFP_KERNEL)) == NULL) {
313 ERROR();
314 emu10k1_waveout_close(wave_dev);
315 return CTSTATUS_ERROR;
316 }
317
318 woinst->wave_out = wave_out;
319
320 /* Init channel object */
321 wave_out->state = CARDWAVE_STATE_STOPPED;
322 wave_out->wave_fmt = woinst->wave_fmt;
323 wave_out->voice = NULL;
324 wave_out->emupageindex = -1;
325 wave_out->wavexferbuf = NULL;
326 wave_out->pagetable = NULL;
327 wave_out->timer = NULL;
328
329 /* Assign default local volume */
330 /* FIXME: Should we be maxing the initial values like this? */
331 wave_out->localvol = 0xffffffff;
332 wave_out->localreverb = 0xffffffff;
333 wave_out->localchorus = 0xffffffff;
334 wave_out->globalvolFactor = 0xffff;
335 wave_out->globalreverbFactor = 0xffff;
336 wave_out->globalchorusFactor = 0xffff;
337
338 wave_out->setpos = 0;
339 wave_out->position = 0;
340
341 wave_out->fill_silence = 0;
342
343 if ((wave_out->wavexferbuf = (struct wave_xferbuf *) kmalloc(sizeof(struct wave_xferbuf), GFP_KERNEL)) == NULL) {
344 ERROR();
345 emu10k1_waveout_close(wave_dev);
346 return CTSTATUS_ERROR;
347 }
348
349 buffsize = woinst->fragment_size * woinst->numfrags;
350
351 if (get_xferbuffer(card, wave_out, &buffsize) != CTSTATUS_SUCCESS) {
352 ERROR();
353 emu10k1_waveout_close(wave_dev);
354 return CTSTATUS_ERROR;
355 }
356
357 woinst->fragment_size = buffsize / woinst->numfrags;
358 wave_out->callbacksize = woinst->fragment_size;
359
360 if (get_voice(card, wave_out, woinst->device) != CTSTATUS_SUCCESS) {
361 ERROR();
362 emu10k1_waveout_close(wave_dev);
363 return CTSTATUS_ERROR;
364 }
365
366 bytespersec = wave_out->wave_fmt.channels * (wave_out->wave_fmt.bitsperchannel >> 3) * (wave_out->wave_fmt.samplingrate);
367 delay = (48000 * wave_out->callbacksize) / bytespersec;
368
369 if ((wave_out->timer = emu10k1_timer_install(card, emu10k1_waveout_bh, (unsigned long) wave_dev, delay / 2)) == NULL) {
370 ERROR();
371 emu10k1_waveout_close(wave_dev);
372 return CTSTATUS_ERROR;
373 }
374
375 return CTSTATUS_SUCCESS;
376}
377
378void emu10k1_waveout_close(struct emu10k1_wavedevice *wave_dev)
379{
380 struct emu10k1_card *card = wave_dev->card;
381 struct wave_out *wave_out = wave_dev->woinst->wave_out;
382
383 DPF(2, "emu10k1_waveout_close()\n");
384
385 if (wave_out->state != CARDWAVE_STATE_STOPPED)
386 emu10k1_waveout_stop(wave_dev);
387
388 if (wave_out->timer != NULL)
389 emu10k1_timer_uninstall(card, wave_out->timer);
390
391 if (wave_out->voice != NULL)
392 emu10k1_voice_free(&card->voicemgr, wave_out->voice);
393
394 if (wave_out->emupageindex >= 0)
395 dealloc_xferbuffer(card, wave_out);
396
397 if (wave_out->wavexferbuf != NULL)
398 kfree(wave_out->wavexferbuf);
399
400 kfree(wave_out);
401 wave_dev->woinst->wave_out = NULL;
402
403 return;
404}
405
406int emu10k1_waveout_start(struct emu10k1_wavedevice *wave_dev)
407{
408 struct emu10k1_card *card = wave_dev->card;
409 struct wave_out *wave_out = wave_dev->woinst->wave_out;
410 u32 start, startPosition;
411
412 DPF(2, "emu10k1_waveout_start()\n");
413
414 /* If already started, return success */
415 if (wave_out->state == CARDWAVE_STATE_STARTED)
416 return CTSTATUS_SUCCESS;
417
418 if (wave_out->state == CARDWAVE_STATE_STOPPED && wave_out->setpos)
419 startPosition = wave_out->position / (wave_out->wavexferbuf->bytespersample);
420 else
421 startPosition = wave_out->wavexferbuf->stopposition;
422
423 start = wave_out->voice->params.start;
424 wave_out->voice->params.start += startPosition;
425
426 DPD(2, "CA is %x\n", wave_out->voice->params.start);
427
428 emu10k1_voice_playback_setup(wave_out->voice);
429
430 wave_out->voice->params.start = start;
431
432 /* Actual start */
433 emu10k1_voice_start(wave_out->voice);
434
435 wave_out->state = CARDWAVE_STATE_STARTED;
436 wave_out->setpos = 0;
437
438 emu10k1_timer_enable(card, wave_out->timer);
439
440 return CTSTATUS_SUCCESS;
441}
442
443int emu10k1_waveout_setformat(struct emu10k1_wavedevice *wave_dev)
444{
445 struct emu10k1_card *card = wave_dev->card;
446 struct woinst *woinst = wave_dev->woinst;
447 struct wave_out *wave_out = woinst->wave_out;
448 u32 bytespersec, delay;
449
450 DPF(2, "emu10k1_waveout_setformat()\n");
451
452 query_format(&woinst->wave_fmt);
453
454 if (wave_out == NULL)
455 return CTSTATUS_SUCCESS;
456
457 if (wave_out->state == CARDWAVE_STATE_STARTED) {
458 woinst->wave_fmt = wave_out->wave_fmt;
459 return CTSTATUS_SUCCESS;
460 }
461
462 if ((wave_out->wave_fmt.samplingrate != woinst->wave_fmt.samplingrate)
463 || (wave_out->wave_fmt.bitsperchannel != woinst->wave_fmt.bitsperchannel)
464 || (wave_out->wave_fmt.channels != woinst->wave_fmt.channels)) {
465 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
466
467 emu10k1_timer_uninstall(card, wave_out->timer);
468
469 emu10k1_voice_free(&card->voicemgr, wave_out->voice);
470
471 wave_out->wave_fmt = woinst->wave_fmt;
472 wave_out->timer = NULL;
473
474 wavexferbuf->xferpos = 0;
475 wavexferbuf->silence_xferpos = 0;
476 wavexferbuf->stopposition = 0;
477 wavexferbuf->is_stereo = (wave_out->wave_fmt.channels == 2) ? 1 : 0;
478 wavexferbuf->is_16bit = (wave_out->wave_fmt.bitsperchannel == 16) ? 1 : 0;
479 wavexferbuf->bytespersample = (wavexferbuf->is_stereo + 1) * (wavexferbuf->is_16bit + 1);
480
481 if (get_voice(card, wave_out, woinst->device) != CTSTATUS_SUCCESS) {
482 ERROR();
483 emu10k1_waveout_close(wave_dev);
484 return CTSTATUS_ERROR;
485 }
486
487 bytespersec = wave_out->wave_fmt.channels * (wave_out->wave_fmt.bitsperchannel >> 3) * (wave_out->wave_fmt.samplingrate);
488 delay = (48000 * wave_out->callbacksize) / bytespersec;
489
490 if ((wave_out->timer = emu10k1_timer_install(card, emu10k1_waveout_bh, (unsigned long) wave_dev, delay / 2)) == NULL) {
491 ERROR();
492 emu10k1_waveout_close(wave_dev);
493 return CTSTATUS_ERROR;
494 }
495 }
496
497 return CTSTATUS_SUCCESS;
498}
499
500void emu10k1_waveout_stop(struct emu10k1_wavedevice *wave_dev)
501{
502 struct emu10k1_card *card = wave_dev->card;
503 struct wave_out *wave_out = wave_dev->woinst->wave_out;
504 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
505 u32 samples = 32;
506 u32 position;
507
508 DPF(2, "emu10k1_waveout_stop()\n");
509
510 if (wave_out->state == CARDWAVE_STATE_STOPPED)
511 return;
512
513 emu10k1_timer_disable(card, wave_out->timer);
514
515 /* Stop actual voice */
516 emu10k1_voice_stop(wave_out->voice);
517
518 /* Save the stop position */
519 emu10k1_voice_getcontrol(wave_out->voice, CCCA_CURRADDR, &wavexferbuf->stopposition);
520
521 wavexferbuf->stopposition -= wave_out->voice->params.start;
522
523 /* Refer to voicemgr.c, CA is not started at zero. We need to take this into account. */
524 position = wavexferbuf->stopposition * wavexferbuf->bytespersample;
525
526 if (!wavexferbuf->is_16bit)
527 samples <<= 1;
528
529 if (wavexferbuf->is_stereo)
530 samples <<= 1;
531
532 samples -= 4;
533
534 if (position >= samples * (wavexferbuf->is_16bit + 1))
535 position -= samples * (wavexferbuf->is_16bit + 1);
536 else
537 position += wavexferbuf->xferbufsize - samples * (wavexferbuf->is_16bit + 1);
538
539 wavexferbuf->stopposition = position / wavexferbuf->bytespersample;
540
541 DPD(2, "position is %x\n", wavexferbuf->stopposition);
542
543 wave_out->state = CARDWAVE_STATE_STOPPED;
544 wave_out->setpos = 0;
545 wave_out->position = 0;
546
547 return;
548}
549
550void emu10k1_waveout_getxfersize(struct woinst *woinst, u32 * size)
551{
552 struct wave_out *wave_out = woinst->wave_out;
553 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
554 u32 curpos = woinst->curpos;
555 u32 pending;
556
557 if ((curpos > wavexferbuf->silence_xferpos)
558 || ((curpos == wavexferbuf->silence_xferpos)
559 && (wave_out->state == CARDWAVE_STATE_STARTED))
560 || ((curpos == wavexferbuf->silence_xferpos) && (wavexferbuf->silence_xferpos != 0)
561 && (wave_out->state == CARDWAVE_STATE_STOPPED))) {
562 *size = curpos - wavexferbuf->silence_xferpos;
563 } else {
564 *size = curpos - wavexferbuf->silence_xferpos + wavexferbuf->xferbufsize;
565 }
566
567 pending = wavexferbuf->xferbufsize - *size;
568
569 wave_out->fill_silence = (pending < wave_out->callbacksize) ? 1 : 0;
570
571 if (pending > woinst->silence_bytes) {
572 *size += woinst->silence_bytes;
573 } else {
574 *size = wavexferbuf->xferbufsize;
575 wavexferbuf->xferpos = curpos;
576 }
577
578 return;
579}
580
581static void copy_block(u32 dst, u8 * src, u32 len, void **pt)
582{
583 int i, j, k;
584
585 i = dst / PAGE_SIZE;
586 j = dst % PAGE_SIZE;
587 k = (len > PAGE_SIZE - j) ? PAGE_SIZE - j : len;
588#ifdef TARGET_OS2
589 copy_from_user((u8 *)pt[i] + j, src, k);
590#else
591 copy_from_user(pt[i] + j, src, k);
592#endif
593 len -= k;
594 while (len >= PAGE_SIZE) {
595 copy_from_user(pt[++i], src + k, PAGE_SIZE);
596 k += PAGE_SIZE;
597 len -= PAGE_SIZE;
598 }
599 copy_from_user(pt[++i], src + k, len);
600
601 return;
602}
603
604static void fill_block(u32 dst, u8 val, u32 len, void **pt)
605{
606 int i, j, k;
607
608 i = dst / PAGE_SIZE;
609 j = dst % PAGE_SIZE;
610 k = (len > PAGE_SIZE - j) ? PAGE_SIZE - j : len;
611#ifdef TARGET_OS2
612 memset((u8 *)pt[i] + j, val, k);
613#else
614 memset(pt[i] + j, val, k);
615#endif
616 len -= k;
617 while (len >= PAGE_SIZE) {
618 memset(pt[++i], val, PAGE_SIZE);
619 len -= PAGE_SIZE;
620 }
621 memset(pt[++i], val, len);
622
623 return;
624}
625
626void emu10k1_waveout_xferdata(struct woinst *woinst, u8 * data, u32 * size)
627{
628 struct wave_out *wave_out = woinst->wave_out;
629 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
630 u32 sizetocopy, sizetocopy_now, start;
631 unsigned long flags;
632
633 sizetocopy = min(wavexferbuf->xferbufsize, *size);
634 *size = sizetocopy;
635
636 if (!sizetocopy)
637 return;
638
639 spin_lock_irqsave(&woinst->lock, flags);
640 woinst->silence_bytes = 0;
641 sizetocopy_now = wavexferbuf->xferbufsize - wavexferbuf->xferpos;
642
643 start = wavexferbuf->xferpos;
644
645 if (sizetocopy > sizetocopy_now) {
646 sizetocopy -= sizetocopy_now;
647 wavexferbuf->xferpos = sizetocopy;
648 wavexferbuf->silence_xferpos = wavexferbuf->xferpos;
649 spin_unlock_irqrestore(&woinst->lock, flags);
650
651 copy_block(start, data, sizetocopy_now, wavexferbuf->xferbuffer);
652 copy_block(0, data + sizetocopy_now, sizetocopy, wavexferbuf->xferbuffer);
653 } else {
654 if (sizetocopy == sizetocopy_now)
655 wavexferbuf->xferpos = 0;
656 else
657 wavexferbuf->xferpos += sizetocopy;
658
659 wavexferbuf->silence_xferpos = wavexferbuf->xferpos;
660 spin_unlock_irqrestore(&woinst->lock, flags);
661
662 copy_block(start, data, sizetocopy, wavexferbuf->xferbuffer);
663 }
664
665 return;
666}
667
668void emu10k1_waveout_fillsilence(struct woinst *woinst)
669{
670 struct wave_out *wave_out = woinst->wave_out;
671 struct wave_xferbuf *wavexferbuf = wave_out->wavexferbuf;
672 u16 filldata;
673 u32 sizetocopy, sizetocopy_now, start;
674 unsigned long flags;
675
676 sizetocopy = wave_out->callbacksize;
677
678 if (wave_out->wave_fmt.bitsperchannel == 8)
679 filldata = 0x8080;
680 else
681 filldata = 0x0000;
682
683 spin_lock_irqsave(&woinst->lock, flags);
684 woinst->silence_bytes += sizetocopy;
685 sizetocopy_now = wavexferbuf->xferbufsize - wavexferbuf->silence_xferpos;
686 start = wavexferbuf->silence_xferpos;
687
688 if (sizetocopy > sizetocopy_now) {
689 sizetocopy -= sizetocopy_now;
690 wavexferbuf->silence_xferpos = sizetocopy;
691 spin_unlock_irqrestore(&woinst->lock, flags);
692 fill_block(start, filldata, sizetocopy_now, wavexferbuf->xferbuffer);
693 fill_block(0, filldata, sizetocopy, wavexferbuf->xferbuffer);
694 } else {
695 if (sizetocopy == sizetocopy_now)
696 wavexferbuf->silence_xferpos = 0;
697 else
698 wavexferbuf->silence_xferpos += sizetocopy;
699
700 spin_unlock_irqrestore(&woinst->lock, flags);
701
702 fill_block(start, filldata, sizetocopy, wavexferbuf->xferbuffer);
703 }
704
705 return;
706}
707
708void emu10k1_waveout_update(struct woinst *woinst)
709{
710 struct wave_out *wave_out = woinst->wave_out;
711 u32 curpos;
712
713 /* There is no actual start yet */
714 if (wave_out->state == CARDWAVE_STATE_STOPPED) {
715 if (wave_out->setpos)
716 curpos = wave_out->position;
717 else
718 curpos = wave_out->wavexferbuf->stopposition * wave_out->wavexferbuf->bytespersample;
719 } else {
720 u32 samples;
721
722 emu10k1_voice_getcontrol(wave_out->voice, CCCA_CURRADDR, &curpos);
723
724 curpos -= wave_out->voice->params.start;
725
726 /* Get number of bytes in play buffer per channel.
727 * If 8 bit mode is enabled, this needs to be changed. */
728 curpos *= wave_out->wavexferbuf->bytespersample;
729
730 /* Refer to voicemgr.c, CA is not started at zero.
731 * We need to take this into account. */
732 samples = 64 * (wave_out->wavexferbuf->is_stereo + 1) - 4 * (wave_out->wavexferbuf->is_16bit + 1);
733
734 if (curpos >= samples)
735 curpos -= samples;
736 else
737 curpos += wave_out->wavexferbuf->xferbufsize - samples;
738 }
739
740 woinst->total_played += curpos - woinst->curpos;
741
742 if (curpos < woinst->curpos)
743 woinst->total_played += woinst->fragment_size * woinst->numfrags;
744
745 woinst->curpos = curpos;
746
747 return;
748}
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