3 * Copyright 1998 Marcus Meissner
4 * Copyright 1998 Rob Riggs
5 * Copyright 2000-2002 TransGaming Technologies, Inc.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include <sys/types.h>
27 #include <sys/fcntl.h>
33 #include <math.h> /* Insomnia - pow() function */
44 #include "wine/windef16.h"
45 #include "wine/debug.h"
48 #include "dsound_private.h"
50 WINE_DEFAULT_DEBUG_CHANNEL(dsound
);
52 void DSOUND_RecalcVolPan(PDSVOLUMEPAN volpan
)
55 TRACE("(%p)\n",volpan
);
57 TRACE("Vol=%ld Pan=%ld\n", volpan
->lVolume
, volpan
->lPan
);
58 /* the AmpFactors are expressed in 16.16 fixed point */
59 volpan
->dwVolAmpFactor
= (ULONG
) (pow(2.0, volpan
->lVolume
/ 600.0) * 0xffff);
60 /* FIXME: dwPan{Left|Right}AmpFactor */
62 /* FIXME: use calculated vol and pan ampfactors */
63 temp
= (double) (volpan
->lVolume
- (volpan
->lPan
> 0 ? volpan
->lPan
: 0));
64 volpan
->dwTotalLeftAmpFactor
= (ULONG
) (pow(2.0, temp
/ 600.0) * 0xffff);
65 temp
= (double) (volpan
->lVolume
+ (volpan
->lPan
< 0 ? volpan
->lPan
: 0));
66 volpan
->dwTotalRightAmpFactor
= (ULONG
) (pow(2.0, temp
/ 600.0) * 0xffff);
68 TRACE("left = %lx, right = %lx\n", volpan
->dwTotalLeftAmpFactor
, volpan
->dwTotalRightAmpFactor
);
71 void DSOUND_AmpFactorToVolPan(PDSVOLUMEPAN volpan
)
74 TRACE("(%p)\n",volpan
);
76 TRACE("left=%lx, right=%lx\n",volpan
->dwTotalLeftAmpFactor
,volpan
->dwTotalRightAmpFactor
);
77 if (volpan
->dwTotalLeftAmpFactor
==0)
80 left
=600 * log(((double)volpan
->dwTotalLeftAmpFactor
) / 0xffff) / log(2);
81 if (volpan
->dwTotalRightAmpFactor
==0)
84 right
=600 * log(((double)volpan
->dwTotalRightAmpFactor
) / 0xffff) / log(2);
87 volpan
->lVolume
=right
;
88 volpan
->dwVolAmpFactor
=volpan
->dwTotalRightAmpFactor
;
93 volpan
->dwVolAmpFactor
=volpan
->dwTotalLeftAmpFactor
;
95 if (volpan
->lVolume
< -10000)
96 volpan
->lVolume
=-10000;
97 volpan
->lPan
=right
-left
;
98 if (volpan
->lPan
< -10000)
101 TRACE("Vol=%ld Pan=%ld\n", volpan
->lVolume
, volpan
->lPan
);
104 void DSOUND_RecalcFormat(IDirectSoundBufferImpl
*dsb
)
109 sw
= dsb
->pwfx
->nChannels
* (dsb
->pwfx
->wBitsPerSample
/ 8);
110 /* calculate the 10ms write lead */
111 dsb
->writelead
= (dsb
->freq
/ 100) * sw
;
114 void DSOUND_CheckEvent(IDirectSoundBufferImpl
*dsb
, int len
)
118 LPDSBPOSITIONNOTIFY event
;
119 TRACE("(%p,%d)\n",dsb
,len
);
121 if (dsb
->nrofnotifies
== 0)
124 TRACE("(%p) buflen = %ld, playpos = %ld, len = %d\n",
125 dsb
, dsb
->buflen
, dsb
->playpos
, len
);
126 for (i
= 0; i
< dsb
->nrofnotifies
; i
++) {
127 event
= dsb
->notifies
+ i
;
128 offset
= event
->dwOffset
;
129 TRACE("checking %d, position %ld, event = %p\n",
130 i
, offset
, event
->hEventNotify
);
131 /* DSBPN_OFFSETSTOP has to be the last element. So this is */
132 /* OK. [Inside DirectX, p274] */
134 /* This also means we can't sort the entries by offset, */
135 /* because DSBPN_OFFSETSTOP == -1 */
136 if (offset
== DSBPN_OFFSETSTOP
) {
137 if (dsb
->state
== STATE_STOPPED
) {
138 SetEvent(event
->hEventNotify
);
139 TRACE("signalled event %p (%d)\n", event
->hEventNotify
, i
);
144 if ((dsb
->playpos
+ len
) >= dsb
->buflen
) {
145 if ((offset
< ((dsb
->playpos
+ len
) % dsb
->buflen
)) ||
146 (offset
>= dsb
->playpos
)) {
147 TRACE("signalled event %p (%d)\n", event
->hEventNotify
, i
);
148 SetEvent(event
->hEventNotify
);
151 if ((offset
>= dsb
->playpos
) && (offset
< (dsb
->playpos
+ len
))) {
152 TRACE("signalled event %p (%d)\n", event
->hEventNotify
, i
);
153 SetEvent(event
->hEventNotify
);
159 /* WAV format info can be found at:
161 * http://www.cwi.nl/ftp/audio/AudioFormats.part2
162 * ftp://ftp.cwi.nl/pub/audio/RIFF-format
164 * Import points to remember:
165 * 8-bit WAV is unsigned
166 * 16-bit WAV is signed
168 /* Use the same formulas as pcmconverter.c */
169 static inline INT16
cvtU8toS16(BYTE b
)
171 return (short)((b
+(b
<< 8))-32768);
174 static inline BYTE
cvtS16toU8(INT16 s
)
176 return (s
>> 8) ^ (unsigned char)0x80;
179 static inline void cp_fields(const IDirectSoundBufferImpl
*dsb
, BYTE
*ibuf
, BYTE
*obuf
)
183 if (dsb
->pwfx
->wBitsPerSample
== 8) {
184 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 8 &&
185 dsb
->dsound
->pwfx
->nChannels
== dsb
->pwfx
->nChannels
) {
186 /* avoid needless 8->16->8 conversion */
188 if (dsb
->pwfx
->nChannels
==2)
192 fl
= cvtU8toS16(*ibuf
);
193 fr
= (dsb
->pwfx
->nChannels
==2 ? cvtU8toS16(*(ibuf
+ 1)) : fl
);
195 fl
= *((INT16
*)ibuf
);
196 fr
= (dsb
->pwfx
->nChannels
==2 ? *(((INT16
*)ibuf
) + 1) : fl
);
199 if (dsb
->dsound
->pwfx
->nChannels
== 2) {
200 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 8) {
201 *obuf
= cvtS16toU8(fl
);
202 *(obuf
+ 1) = cvtS16toU8(fr
);
205 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 16) {
206 *((INT16
*)obuf
) = fl
;
207 *(((INT16
*)obuf
) + 1) = fr
;
211 if (dsb
->dsound
->pwfx
->nChannels
== 1) {
213 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 8) {
214 *obuf
= cvtS16toU8(fl
);
217 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 16) {
218 *((INT16
*)obuf
) = fl
;
224 /* Now with PerfectPitch (tm) technology */
225 static INT
DSOUND_MixerNorm(IDirectSoundBufferImpl
*dsb
, BYTE
*buf
, INT len
)
227 INT i
, size
, ipos
, ilen
;
229 INT iAdvance
= dsb
->pwfx
->nBlockAlign
;
230 INT oAdvance
= dsb
->dsound
->pwfx
->nBlockAlign
;
232 ibp
= dsb
->buffer
->memory
+ dsb
->buf_mixpos
;
235 TRACE("(%p, %p, %p), buf_mixpos=%ld\n", dsb
, ibp
, obp
, dsb
->buf_mixpos
);
236 /* Check for the best case */
237 if ((dsb
->freq
== dsb
->dsound
->pwfx
->nSamplesPerSec
) &&
238 (dsb
->pwfx
->wBitsPerSample
== dsb
->dsound
->pwfx
->wBitsPerSample
) &&
239 (dsb
->pwfx
->nChannels
== dsb
->dsound
->pwfx
->nChannels
)) {
240 DWORD bytesleft
= dsb
->buflen
- dsb
->buf_mixpos
;
241 TRACE("(%p) Best case\n", dsb
);
242 if (len
<= bytesleft
)
243 memcpy(obp
, ibp
, len
);
245 memcpy(obp
, ibp
, bytesleft
);
246 memcpy(obp
+ bytesleft
, dsb
->buffer
->memory
, len
- bytesleft
);
251 /* Check for same sample rate */
252 if (dsb
->freq
== dsb
->dsound
->pwfx
->nSamplesPerSec
) {
253 TRACE("(%p) Same sample rate %ld = primary %ld\n", dsb
,
254 dsb
->freq
, dsb
->dsound
->pwfx
->nSamplesPerSec
);
256 for (i
= 0; i
< len
; i
+= oAdvance
) {
257 cp_fields(dsb
, ibp
, obp
);
261 if (ibp
>= (BYTE
*)(dsb
->buffer
->memory
+ dsb
->buflen
))
262 ibp
= dsb
->buffer
->memory
; /* wrap */
267 /* Mix in different sample rates */
269 /* New PerfectPitch(tm) Technology (c) 1998 Rob Riggs */
270 /* Patent Pending :-] */
272 /* Patent enhancements (c) 2000 Ove KÃ¥ven,
273 * TransGaming Technologies Inc. */
275 /* FIXME("(%p) Adjusting frequency: %ld -> %ld (need optimization)\n",
276 dsb, dsb->freq, dsb->dsound->pwfx->nSamplesPerSec); */
278 size
= len
/ oAdvance
;
280 ipos
= dsb
->buf_mixpos
;
281 for (i
= 0; i
< size
; i
++) {
282 cp_fields(dsb
, (dsb
->buffer
->memory
+ ipos
), obp
);
284 dsb
->freqAcc
+= dsb
->freqAdjust
;
285 if (dsb
->freqAcc
>= (1<<DSOUND_FREQSHIFT
)) {
286 ULONG adv
= (dsb
->freqAcc
>>DSOUND_FREQSHIFT
) * iAdvance
;
287 dsb
->freqAcc
&= (1<<DSOUND_FREQSHIFT
)-1;
288 ipos
+= adv
; ilen
+= adv
;
295 static void DSOUND_MixerVol(IDirectSoundBufferImpl
*dsb
, BYTE
*buf
, INT len
)
299 INT16
*bps
= (INT16
*) buf
;
301 TRACE("(%p,%p,%d)\n",dsb
,buf
,len
);
302 TRACE("left = %lx, right = %lx\n", dsb
->cvolpan
.dwTotalLeftAmpFactor
,
303 dsb
->cvolpan
.dwTotalRightAmpFactor
);
305 if ((!(dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLPAN
) || (dsb
->cvolpan
.lPan
== 0)) &&
306 (!(dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLVOLUME
) || (dsb
->cvolpan
.lVolume
== 0)) &&
307 !(dsb
->dsbd
.dwFlags
& DSBCAPS_CTRL3D
))
308 return; /* Nothing to do */
310 /* If we end up with some bozo coder using panning or 3D sound */
311 /* with a mono primary buffer, it could sound very weird using */
312 /* this method. Oh well, tough patooties. */
314 switch (dsb
->dsound
->pwfx
->wBitsPerSample
) {
316 /* 8-bit WAV is unsigned, but we need to operate */
317 /* on signed data for this to work properly */
318 switch (dsb
->dsound
->pwfx
->nChannels
) {
320 for (i
= 0; i
< len
; i
++) {
321 INT val
= *bpc
- 128;
322 val
= (val
* dsb
->cvolpan
.dwTotalLeftAmpFactor
) >> 16;
328 for (i
= 0; i
< len
; i
+=2) {
329 INT val
= *bpc
- 128;
330 val
= (val
* dsb
->cvolpan
.dwTotalLeftAmpFactor
) >> 16;
333 val
= (val
* dsb
->cvolpan
.dwTotalRightAmpFactor
) >> 16;
339 FIXME("doesn't support %d channels\n", dsb
->dsound
->pwfx
->nChannels
);
344 /* 16-bit WAV is signed -- much better */
345 switch (dsb
->dsound
->pwfx
->nChannels
) {
347 for (i
= 0; i
< len
; i
+= 2) {
348 *bps
= (*bps
* dsb
->cvolpan
.dwTotalLeftAmpFactor
) >> 16;
353 for (i
= 0; i
< len
; i
+= 4) {
354 *bps
= (*bps
* dsb
->cvolpan
.dwTotalLeftAmpFactor
) >> 16;
356 *bps
= (*bps
* dsb
->cvolpan
.dwTotalRightAmpFactor
) >> 16;
361 FIXME("doesn't support %d channels\n", dsb
->dsound
->pwfx
->nChannels
);
366 FIXME("doesn't support %d bit samples\n", dsb
->dsound
->pwfx
->wBitsPerSample
);
371 static void *tmp_buffer
;
372 static size_t tmp_buffer_len
= 0;
374 static void *DSOUND_tmpbuffer(size_t len
)
376 if (len
>tmp_buffer_len
) {
377 void *new_buffer
= realloc(tmp_buffer
, len
);
379 tmp_buffer
= new_buffer
;
380 tmp_buffer_len
= len
;
387 static DWORD
DSOUND_MixInBuffer(IDirectSoundBufferImpl
*dsb
, DWORD writepos
, DWORD fraglen
)
389 INT i
, len
, ilen
, temp
, field
, nBlockAlign
, todo
;
392 TRACE("(%p,%ld,%ld)\n",dsb
,writepos
,fraglen
);
395 if (!(dsb
->playflags
& DSBPLAY_LOOPING
)) {
396 temp
= MulDiv(dsb
->dsound
->pwfx
->nAvgBytesPerSec
, dsb
->buflen
,
397 dsb
->nAvgBytesPerSec
) -
398 MulDiv(dsb
->dsound
->pwfx
->nAvgBytesPerSec
, dsb
->buf_mixpos
,
399 dsb
->nAvgBytesPerSec
);
400 len
= (len
> temp
) ? temp
: len
;
402 nBlockAlign
= dsb
->dsound
->pwfx
->nBlockAlign
;
403 len
= len
/ nBlockAlign
* nBlockAlign
; /* data alignment */
406 /* This should only happen if we aren't looping and temp < nBlockAlign */
410 /* Been seeing segfaults in malloc() for some reason... */
411 TRACE("allocating buffer (size = %d)\n", len
);
412 if ((buf
= ibuf
= (BYTE
*) DSOUND_tmpbuffer(len
)) == NULL
)
415 TRACE("MixInBuffer (%p) len = %d, dest = %ld\n", dsb
, len
, writepos
);
417 ilen
= DSOUND_MixerNorm(dsb
, ibuf
, len
);
418 if ((dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLPAN
) ||
419 (dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLVOLUME
) ||
420 (dsb
->dsbd
.dwFlags
& DSBCAPS_CTRL3D
))
421 DSOUND_MixerVol(dsb
, ibuf
, len
);
423 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 8) {
424 BYTE
*obuf
= dsb
->dsound
->buffer
+ writepos
;
426 if ((writepos
+ len
) <= dsb
->dsound
->buflen
)
429 todo
= dsb
->dsound
->buflen
- writepos
;
431 for (i
= 0; i
< todo
; i
++) {
432 /* 8-bit WAV is unsigned */
433 field
= (*ibuf
++ - 128);
434 field
+= (*obuf
- 128);
435 if (field
> 127) field
= 127;
436 else if (field
< -128) field
= -128;
437 *obuf
++ = field
+ 128;
442 obuf
= dsb
->dsound
->buffer
;
444 for (i
= 0; i
< todo
; i
++) {
445 /* 8-bit WAV is unsigned */
446 field
= (*ibuf
++ - 128);
447 field
+= (*obuf
- 128);
448 if (field
> 127) field
= 127;
449 else if (field
< -128) field
= -128;
450 *obuf
++ = field
+ 128;
454 INT16
*ibufs
, *obufs
;
456 ibufs
= (INT16
*) ibuf
;
457 obufs
= (INT16
*)(dsb
->dsound
->buffer
+ writepos
);
459 if ((writepos
+ len
) <= dsb
->dsound
->buflen
)
462 todo
= (dsb
->dsound
->buflen
- writepos
) / 2;
464 for (i
= 0; i
< todo
; i
++) {
465 /* 16-bit WAV is signed */
468 if (field
> 32767) field
= 32767;
469 else if (field
< -32768) field
= -32768;
473 if (todo
< (len
/ 2)) {
474 todo
= (len
/ 2) - todo
;
475 obufs
= (INT16
*)dsb
->dsound
->buffer
;
477 for (i
= 0; i
< todo
; i
++) {
478 /* 16-bit WAV is signed */
481 if (field
> 32767) field
= 32767;
482 else if (field
< -32768) field
= -32768;
488 if (dsb
->leadin
&& (dsb
->startpos
> dsb
->buf_mixpos
) && (dsb
->startpos
<= dsb
->buf_mixpos
+ ilen
)) {
489 /* HACK... leadin should be reset when the PLAY position reaches the startpos,
490 * not the MIX position... but if the sound buffer is bigger than our prebuffering
491 * (which must be the case for the streaming buffers that need this hack anyway)
492 * plus DS_HEL_MARGIN or equivalent, then this ought to work anyway. */
496 dsb
->buf_mixpos
+= ilen
;
498 if (dsb
->buf_mixpos
>= dsb
->buflen
) {
499 if (dsb
->playflags
& DSBPLAY_LOOPING
) {
501 dsb
->buf_mixpos
%= dsb
->buflen
;
502 if (dsb
->leadin
&& (dsb
->startpos
<= dsb
->buf_mixpos
))
503 dsb
->leadin
= FALSE
; /* HACK: see above */
510 static void DSOUND_PhaseCancel(IDirectSoundBufferImpl
*dsb
, DWORD writepos
, DWORD len
)
512 INT ilen
, field
, nBlockAlign
;
516 TRACE("(%p,%ld,%ld)\n",dsb
,writepos
,len
);
518 nBlockAlign
= dsb
->dsound
->pwfx
->nBlockAlign
;
519 len
= len
/ nBlockAlign
* nBlockAlign
; /* data alignment */
521 TRACE("allocating buffer (size = %ld)\n", len
);
522 if ((buf
= ibuf
= (BYTE
*) DSOUND_tmpbuffer(len
)) == NULL
)
525 TRACE("PhaseCancel (%p) len = %ld, dest = %ld\n", dsb
, len
, writepos
);
527 ilen
= DSOUND_MixerNorm(dsb
, ibuf
, len
);
528 if ((dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLPAN
) ||
529 (dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLVOLUME
) ||
530 (dsb
->dsbd
.dwFlags
& DSBCAPS_CTRL3D
))
531 DSOUND_MixerVol(dsb
, ibuf
, len
);
533 /* subtract instead of add, to phase out premixed data */
534 if (dsb
->dsound
->pwfx
->wBitsPerSample
== 8) {
535 BYTE
*obuf
= dsb
->dsound
->buffer
+ writepos
;
537 if ((writepos
+ len
) <= dsb
->dsound
->buflen
)
540 todo
= dsb
->dsound
->buflen
- writepos
;
542 for (i
= 0; i
< todo
; i
++) {
543 /* 8-bit WAV is unsigned */
544 field
= (*ibuf
++ - 128);
545 field
-= (*obuf
- 128);
546 if (field
> 127) field
= 127;
547 else if (field
< -128) field
= -128;
548 *obuf
++ = field
+ 128;
553 obuf
= dsb
->dsound
->buffer
;
555 for (i
= 0; i
< todo
; i
++) {
556 /* 8-bit WAV is unsigned */
557 field
= (*ibuf
++ - 128);
558 field
-= (*obuf
- 128);
559 if (field
> 127) field
= 127;
560 else if (field
< -128) field
= -128;
561 *obuf
++ = field
+ 128;
565 INT16
*ibufs
, *obufs
;
567 ibufs
= (INT16
*) ibuf
;
568 obufs
= (INT16
*)(dsb
->dsound
->buffer
+ writepos
);
570 if ((writepos
+ len
) <= dsb
->dsound
->buflen
)
573 todo
= (dsb
->dsound
->buflen
- writepos
) / 2;
575 for (i
= 0; i
< todo
; i
++) {
576 /* 16-bit WAV is signed */
579 if (field
> 32767) field
= 32767;
580 else if (field
< -32768) field
= -32768;
584 if (todo
< (len
/ 2)) {
585 todo
= (len
/ 2) - todo
;
586 obufs
= (INT16
*)dsb
->dsound
->buffer
;
588 for (i
= 0; i
< todo
; i
++) {
589 /* 16-bit WAV is signed */
592 if (field
> 32767) field
= 32767;
593 else if (field
< -32768) field
= -32768;
600 static void DSOUND_MixCancel(IDirectSoundBufferImpl
*dsb
, DWORD writepos
, BOOL cancel
)
602 DWORD size
, flen
, len
, npos
, nlen
;
603 INT iAdvance
= dsb
->pwfx
->nBlockAlign
;
604 INT oAdvance
= dsb
->dsound
->pwfx
->nBlockAlign
;
605 /* determine amount of premixed data to cancel */
607 ((dsb
->primary_mixpos
< writepos
) ? dsb
->dsound
->buflen
: 0) +
608 dsb
->primary_mixpos
- writepos
;
610 TRACE("(%p, %ld), buf_mixpos=%ld\n", dsb
, writepos
, dsb
->buf_mixpos
);
612 /* backtrack the mix position */
613 size
= primary_done
/ oAdvance
;
614 flen
= size
* dsb
->freqAdjust
;
615 len
= (flen
>> DSOUND_FREQSHIFT
) * iAdvance
;
616 flen
&= (1<<DSOUND_FREQSHIFT
)-1;
617 while (dsb
->freqAcc
< flen
) {
619 dsb
->freqAcc
+= 1<<DSOUND_FREQSHIFT
;
622 npos
= ((dsb
->buf_mixpos
< len
) ? dsb
->buflen
: 0) +
623 dsb
->buf_mixpos
- len
;
624 if (dsb
->leadin
&& (dsb
->startpos
> npos
) && (dsb
->startpos
<= npos
+ len
)) {
625 /* stop backtracking at startpos */
626 npos
= dsb
->startpos
;
627 len
= ((dsb
->buf_mixpos
< npos
) ? dsb
->buflen
: 0) +
628 dsb
->buf_mixpos
- npos
;
630 nlen
= len
/ dsb
->pwfx
->nBlockAlign
;
631 nlen
= ((nlen
<< DSOUND_FREQSHIFT
) + flen
) / dsb
->freqAdjust
;
632 nlen
*= dsb
->dsound
->pwfx
->nBlockAlign
;
634 ((dsb
->primary_mixpos
< nlen
) ? dsb
->dsound
->buflen
: 0) +
635 dsb
->primary_mixpos
- nlen
;
638 dsb
->freqAcc
-= flen
;
639 dsb
->buf_mixpos
= npos
;
640 dsb
->primary_mixpos
= writepos
;
642 TRACE("new buf_mixpos=%ld, primary_mixpos=%ld (len=%ld)\n",
643 dsb
->buf_mixpos
, dsb
->primary_mixpos
, len
);
645 if (cancel
) DSOUND_PhaseCancel(dsb
, writepos
, len
);
648 void DSOUND_MixCancelAt(IDirectSoundBufferImpl
*dsb
, DWORD buf_writepos
)
651 DWORD i
, size
, flen
, len
, npos
, nlen
;
652 INT iAdvance
= dsb
->pwfx
->nBlockAlign
;
653 INT oAdvance
= dsb
->dsound
->pwfx
->nBlockAlign
;
654 /* determine amount of premixed data to cancel */
656 ((dsb
->buf_mixpos
< buf_writepos
) ? dsb
->buflen
: 0) +
657 dsb
->buf_mixpos
- buf_writepos
;
660 WARN("(%p, %ld), buf_mixpos=%ld\n", dsb
, buf_writepos
, dsb
->buf_mixpos
);
661 /* since this is not implemented yet, just cancel *ALL* prebuffering for now
662 * (which is faster anyway when there's only a single secondary buffer) */
663 dsb
->dsound
->need_remix
= TRUE
;
666 void DSOUND_ForceRemix(IDirectSoundBufferImpl
*dsb
)
669 EnterCriticalSection(&dsb
->lock
);
670 if (dsb
->state
== STATE_PLAYING
) {
671 #if 0 /* this may not be quite reliable yet */
672 dsb
->need_remix
= TRUE
;
674 dsb
->dsound
->need_remix
= TRUE
;
677 LeaveCriticalSection(&dsb
->lock
);
680 static DWORD
DSOUND_MixOne(IDirectSoundBufferImpl
*dsb
, DWORD playpos
, DWORD writepos
, DWORD mixlen
)
683 /* determine this buffer's write position */
684 DWORD buf_writepos
= DSOUND_CalcPlayPosition(dsb
, dsb
->state
& dsb
->dsound
->state
, writepos
,
685 writepos
, dsb
->primary_mixpos
, dsb
->buf_mixpos
);
686 /* determine how much already-mixed data exists */
688 ((dsb
->buf_mixpos
< buf_writepos
) ? dsb
->buflen
: 0) +
689 dsb
->buf_mixpos
- buf_writepos
;
691 ((dsb
->primary_mixpos
< writepos
) ? dsb
->dsound
->buflen
: 0) +
692 dsb
->primary_mixpos
- writepos
;
694 ((dsb
->dsound
->mixpos
< writepos
) ? dsb
->dsound
->buflen
: 0) +
695 dsb
->dsound
->mixpos
- writepos
;
697 ((buf_writepos
< dsb
->playpos
) ? dsb
->buflen
: 0) +
698 buf_writepos
- dsb
->playpos
;
699 DWORD buf_left
= dsb
->buflen
- buf_writepos
;
702 TRACE("(%p,%ld,%ld,%ld)\n",dsb
,playpos
,writepos
,mixlen
);
703 TRACE("buf_writepos=%ld, primary_writepos=%ld\n", buf_writepos
, writepos
);
704 TRACE("buf_done=%ld, primary_done=%ld\n", buf_done
, primary_done
);
705 TRACE("buf_mixpos=%ld, primary_mixpos=%ld, mixlen=%ld\n", dsb
->buf_mixpos
, dsb
->primary_mixpos
,
707 TRACE("looping=%ld, startpos=%ld, leadin=%ld\n", dsb
->playflags
, dsb
->startpos
, dsb
->leadin
);
709 /* check for notification positions */
710 if (dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLPOSITIONNOTIFY
&&
711 dsb
->state
!= STATE_STARTING
) {
712 DSOUND_CheckEvent(dsb
, played
);
715 /* save write position for non-GETCURRENTPOSITION2... */
716 dsb
->playpos
= buf_writepos
;
718 /* check whether CalcPlayPosition detected a mixing underrun */
719 if ((buf_done
== 0) && (dsb
->primary_mixpos
!= writepos
)) {
720 /* it did, but did we have more to play? */
721 if ((dsb
->playflags
& DSBPLAY_LOOPING
) ||
722 (dsb
->buf_mixpos
< dsb
->buflen
)) {
723 /* yes, have to recover */
724 ERR("underrun on sound buffer %p\n", dsb
);
725 TRACE("recovering from underrun: primary_mixpos=%ld\n", writepos
);
727 dsb
->primary_mixpos
= writepos
;
730 /* determine how far ahead we should mix */
731 if (((dsb
->playflags
& DSBPLAY_LOOPING
) ||
732 (dsb
->leadin
&& (dsb
->probably_valid_to
!= 0))) &&
733 !(dsb
->dsbd
.dwFlags
& DSBCAPS_STATIC
)) {
734 /* if this is a streaming buffer, it typically means that
735 * we should defer mixing past probably_valid_to as long
736 * as we can, to avoid unnecessary remixing */
737 /* the heavy-looking calculations shouldn't be that bad,
738 * as any game isn't likely to be have more than 1 or 2
739 * streaming buffers in use at any time anyway... */
740 DWORD probably_valid_left
=
741 (dsb
->probably_valid_to
== (DWORD
)-1) ? dsb
->buflen
:
742 ((dsb
->probably_valid_to
< buf_writepos
) ? dsb
->buflen
: 0) +
743 dsb
->probably_valid_to
- buf_writepos
;
744 /* check for leadin condition */
745 if ((probably_valid_left
== 0) &&
746 (dsb
->probably_valid_to
== dsb
->startpos
) &&
748 probably_valid_left
= dsb
->buflen
;
749 TRACE("streaming buffer probably_valid_to=%ld, probably_valid_left=%ld\n",
750 dsb
->probably_valid_to
, probably_valid_left
);
751 /* check whether the app's time is already up */
752 if (probably_valid_left
< dsb
->writelead
) {
753 WARN("probably_valid_to now within writelead, possible streaming underrun\n");
754 /* once we pass the point of no return,
755 * no reason to hold back anymore */
756 dsb
->probably_valid_to
= (DWORD
)-1;
757 /* we just have to go ahead and mix what we have,
758 * there's no telling what the app is thinking anyway */
760 /* adjust for our frequency and our sample size */
761 probably_valid_left
= MulDiv(probably_valid_left
,
762 1 << DSOUND_FREQSHIFT
,
763 dsb
->pwfx
->nBlockAlign
* dsb
->freqAdjust
) *
764 dsb
->dsound
->pwfx
->nBlockAlign
;
765 /* check whether to clip mix_len */
766 if (probably_valid_left
< mixlen
) {
767 TRACE("clipping to probably_valid_left=%ld\n", probably_valid_left
);
768 mixlen
= probably_valid_left
;
772 /* cut mixlen with what's already been mixed */
773 if (mixlen
< primary_done
) {
774 /* huh? and still CalcPlayPosition didn't
775 * detect an underrun? */
776 FIXME("problem with underrun detection (mixlen=%ld < primary_done=%ld)\n", mixlen
, primary_done
);
779 len
= mixlen
- primary_done
;
780 TRACE("remaining mixlen=%ld\n", len
);
782 if (len
< dsb
->dsound
->fraglen
) {
783 /* smaller than a fragment, wait until it gets larger
784 * before we take the mixing overhead */
785 TRACE("mixlen not worth it, deferring mixing\n");
790 /* ok, we know how much to mix, let's go */
791 still_behind
= (adv_done
> primary_done
);
793 slen
= dsb
->dsound
->buflen
- dsb
->primary_mixpos
;
794 if (slen
> len
) slen
= len
;
795 slen
= DSOUND_MixInBuffer(dsb
, dsb
->primary_mixpos
, slen
);
797 if ((dsb
->primary_mixpos
< dsb
->dsound
->mixpos
) &&
798 (dsb
->primary_mixpos
+ slen
>= dsb
->dsound
->mixpos
))
799 still_behind
= FALSE
;
801 dsb
->primary_mixpos
+= slen
; len
-= slen
;
802 dsb
->primary_mixpos
%= dsb
->dsound
->buflen
;
804 if ((dsb
->state
== STATE_STOPPED
) || !slen
) break;
806 TRACE("new primary_mixpos=%ld, primary_advbase=%ld\n", dsb
->primary_mixpos
, dsb
->dsound
->mixpos
);
807 TRACE("mixed data len=%ld, still_behind=%d\n", mixlen
-len
, still_behind
);
810 /* check if buffer should be considered complete */
811 if (buf_left
< dsb
->writelead
&&
812 !(dsb
->playflags
& DSBPLAY_LOOPING
)) {
813 dsb
->state
= STATE_STOPPED
;
815 dsb
->last_playpos
= 0;
818 DSOUND_CheckEvent(dsb
, buf_left
);
821 /* return how far we think the primary buffer can
822 * advance its underrun detector...*/
823 if (still_behind
) return 0;
824 if ((mixlen
- len
) < primary_done
) return 0;
825 slen
= ((dsb
->primary_mixpos
< dsb
->dsound
->mixpos
) ?
826 dsb
->dsound
->buflen
: 0) + dsb
->primary_mixpos
-
829 /* the primary_done and still_behind checks above should have worked */
830 FIXME("problem with advancement calculation (advlen=%ld > mixlen=%ld)\n", slen
, mixlen
);
836 static DWORD
DSOUND_MixToPrimary(IDirectSoundImpl
*dsound
, DWORD playpos
, DWORD writepos
, DWORD mixlen
, BOOL recover
)
838 INT i
, len
, maxlen
= 0;
839 IDirectSoundBufferImpl
*dsb
;
841 TRACE("(%ld,%ld,%ld,%d)\n", playpos
, writepos
, mixlen
, recover
);
842 for (i
= 0; i
< dsound
->nrofbuffers
; i
++) {
843 dsb
= dsound
->buffers
[i
];
845 if (dsb
->buflen
&& dsb
->state
&& !dsb
->hwbuf
) {
846 TRACE("Checking %p, mixlen=%ld\n", dsb
, mixlen
);
847 EnterCriticalSection(&(dsb
->lock
));
848 if (dsb
->state
== STATE_STOPPING
) {
849 DSOUND_MixCancel(dsb
, writepos
, TRUE
);
850 dsb
->state
= STATE_STOPPED
;
851 DSOUND_CheckEvent(dsb
, 0);
853 if ((dsb
->state
== STATE_STARTING
) || recover
) {
854 dsb
->primary_mixpos
= writepos
;
855 dsb
->cvolpan
= dsb
->volpan
;
856 dsb
->need_remix
= FALSE
;
858 else if (dsb
->need_remix
) {
859 DSOUND_MixCancel(dsb
, writepos
, TRUE
);
860 dsb
->cvolpan
= dsb
->volpan
;
861 dsb
->need_remix
= FALSE
;
863 len
= DSOUND_MixOne(dsb
, playpos
, writepos
, mixlen
);
864 if (dsb
->state
== STATE_STARTING
)
865 dsb
->state
= STATE_PLAYING
;
866 maxlen
= (len
> maxlen
) ? len
: maxlen
;
868 LeaveCriticalSection(&(dsb
->lock
));
875 static void DSOUND_MixReset(IDirectSoundImpl
*dsound
, DWORD writepos
)
878 IDirectSoundBufferImpl
*dsb
;
881 TRACE("(%ld)\n", writepos
);
883 /* the sound of silence */
884 nfiller
= dsound
->pwfx
->wBitsPerSample
== 8 ? 128 : 0;
886 /* reset all buffer mix positions */
887 for (i
= 0; i
< dsound
->nrofbuffers
; i
++) {
888 dsb
= dsound
->buffers
[i
];
890 if (dsb
->buflen
&& dsb
->state
&& !dsb
->hwbuf
) {
891 TRACE("Resetting %p\n", dsb
);
892 EnterCriticalSection(&(dsb
->lock
));
893 if (dsb
->state
== STATE_STOPPING
) {
894 dsb
->state
= STATE_STOPPED
;
896 else if (dsb
->state
== STATE_STARTING
) {
899 DSOUND_MixCancel(dsb
, writepos
, FALSE
);
900 dsb
->cvolpan
= dsb
->volpan
;
901 dsb
->need_remix
= FALSE
;
903 LeaveCriticalSection(&(dsb
->lock
));
907 /* wipe out premixed data */
908 if (dsound
->mixpos
< writepos
) {
909 memset(dsound
->buffer
+ writepos
, nfiller
, dsound
->buflen
- writepos
);
910 memset(dsound
->buffer
, nfiller
, dsound
->mixpos
);
912 memset(dsound
->buffer
+ writepos
, nfiller
, dsound
->mixpos
- writepos
);
915 /* reset primary mix position */
916 dsound
->mixpos
= writepos
;
919 static void DSOUND_CheckReset(IDirectSoundImpl
*dsound
, DWORD writepos
)
921 TRACE("(%p,%ld)\n",dsound
,writepos
);
922 if (dsound
->need_remix
) {
923 DSOUND_MixReset(dsound
, writepos
);
924 dsound
->need_remix
= FALSE
;
925 /* maximize Half-Life performance */
926 dsound
->prebuf
= ds_snd_queue_min
;
927 dsound
->precount
= 0;
930 if (dsound
->precount
>= 4) {
931 if (dsound
->prebuf
< ds_snd_queue_max
)
933 dsound
->precount
= 0;
936 TRACE("premix adjust: %d\n", dsound
->prebuf
);
939 void DSOUND_WaveQueue(IDirectSoundImpl
*dsound
, DWORD mixq
)
941 TRACE("(%p,%ld)\n",dsound
,mixq
);
942 if (mixq
+ dsound
->pwqueue
> ds_hel_queue
) mixq
= ds_hel_queue
- dsound
->pwqueue
;
943 TRACE("queueing %ld buffers, starting at %d\n", mixq
, dsound
->pwwrite
);
944 for (; mixq
; mixq
--) {
945 waveOutWrite(dsound
->hwo
, dsound
->pwave
[dsound
->pwwrite
], sizeof(WAVEHDR
));
947 if (dsound
->pwwrite
>= DS_HEL_FRAGS
) dsound
->pwwrite
= 0;
952 /* #define SYNC_CALLBACK */
954 void DSOUND_PerformMix(IDirectSoundImpl
*dsound
)
960 TRACE("(%p)\n", dsound
);
962 /* the sound of silence */
963 nfiller
= dsound
->pwfx
->wBitsPerSample
== 8 ? 128 : 0;
965 /* whether the primary is forced to play even without secondary buffers */
966 forced
= ((dsound
->state
== STATE_PLAYING
) || (dsound
->state
== STATE_STARTING
));
968 if (dsound
->priolevel
!= DSSCL_WRITEPRIMARY
) {
969 BOOL paused
= ((dsound
->state
== STATE_STOPPED
) || (dsound
->state
== STATE_STARTING
));
970 /* FIXME: document variables */
971 DWORD playpos
, writepos
, inq
, maxq
, frag
;
973 hres
= IDsDriverBuffer_GetPosition(dsound
->hwbuf
, &playpos
, &writepos
);
975 WARN("IDsDriverBuffer_GetPosition failed\n");
978 /* Well, we *could* do Just-In-Time mixing using the writepos,
979 * but that's a little bit ambitious and unnecessary... */
980 /* rather add our safety margin to the writepos, if we're playing */
982 writepos
+= dsound
->writelead
;
983 writepos
%= dsound
->buflen
;
984 } else writepos
= playpos
;
986 playpos
= dsound
->pwplay
* dsound
->fraglen
;
989 writepos
+= ds_hel_margin
* dsound
->fraglen
;
990 writepos
%= dsound
->buflen
;
993 TRACE("primary playpos=%ld, writepos=%ld, clrpos=%ld, mixpos=%ld, buflen=%ld\n",
994 playpos
,writepos
,dsound
->playpos
,dsound
->mixpos
,dsound
->buflen
);
995 assert(dsound
->playpos
< dsound
->buflen
);
996 /* wipe out just-played sound data */
997 if (playpos
< dsound
->playpos
) {
998 memset(dsound
->buffer
+ dsound
->playpos
, nfiller
, dsound
->buflen
- dsound
->playpos
);
999 memset(dsound
->buffer
, nfiller
, playpos
);
1001 memset(dsound
->buffer
+ dsound
->playpos
, nfiller
, playpos
- dsound
->playpos
);
1003 dsound
->playpos
= playpos
;
1005 EnterCriticalSection(&(dsound
->mixlock
));
1007 /* reset mixing if necessary */
1008 DSOUND_CheckReset(dsound
, writepos
);
1010 /* check how much prebuffering is left */
1011 inq
= dsound
->mixpos
;
1013 inq
+= dsound
->buflen
;
1016 /* find the maximum we can prebuffer */
1019 if (maxq
< writepos
)
1020 maxq
+= dsound
->buflen
;
1022 } else maxq
= dsound
->buflen
;
1024 /* clip maxq to dsound->prebuf */
1025 frag
= dsound
->prebuf
* dsound
->fraglen
;
1026 if (maxq
> frag
) maxq
= frag
;
1028 /* check for consistency */
1030 /* the playback position must have passed our last
1031 * mixed position, i.e. it's an underrun, or we have
1032 * nothing more to play */
1033 TRACE("reached end of mixed data (inq=%ld, maxq=%ld)\n", inq
, maxq
);
1035 /* stop the playback now, to allow buffers to refill */
1036 if (dsound
->state
== STATE_PLAYING
) {
1037 dsound
->state
= STATE_STARTING
;
1039 else if (dsound
->state
== STATE_STOPPING
) {
1040 dsound
->state
= STATE_STOPPED
;
1043 /* how can we have an underrun if we aren't playing? */
1044 WARN("unexpected primary state (%ld)\n", dsound
->state
);
1046 #ifdef SYNC_CALLBACK
1047 /* DSOUND_callback may need this lock */
1048 LeaveCriticalSection(&(dsound
->mixlock
));
1050 if (DSOUND_PrimaryStop(dsound
) != DS_OK
)
1051 WARN("DSOUND_PrimaryStop failed\n");
1052 #ifdef SYNC_CALLBACK
1053 EnterCriticalSection(&(dsound
->mixlock
));
1055 if (dsound
->hwbuf
) {
1056 /* the Stop is supposed to reset play position to beginning of buffer */
1057 /* unfortunately, OSS is not able to do so, so get current pointer */
1058 hres
= IDsDriverBuffer_GetPosition(dsound
->hwbuf
, &playpos
, NULL
);
1060 LeaveCriticalSection(&(dsound
->mixlock
));
1061 WARN("IDsDriverBuffer_GetPosition failed\n");
1065 playpos
= dsound
->pwplay
* dsound
->fraglen
;
1068 dsound
->playpos
= playpos
;
1069 dsound
->mixpos
= writepos
;
1071 maxq
= dsound
->buflen
;
1072 if (maxq
> frag
) maxq
= frag
;
1073 memset(dsound
->buffer
, nfiller
, dsound
->buflen
);
1078 frag
= DSOUND_MixToPrimary(dsound
, playpos
, writepos
, maxq
, paused
);
1079 if (forced
) frag
= maxq
- inq
;
1080 dsound
->mixpos
+= frag
;
1081 dsound
->mixpos
%= dsound
->buflen
;
1084 /* buffers have been filled, restart playback */
1085 if (dsound
->state
== STATE_STARTING
) {
1086 dsound
->state
= STATE_PLAYING
;
1088 else if (dsound
->state
== STATE_STOPPED
) {
1089 /* the dsound is supposed to play if there's something to play
1090 * even if it is reported as stopped, so don't let this confuse you */
1091 dsound
->state
= STATE_STOPPING
;
1093 LeaveCriticalSection(&(dsound
->mixlock
));
1095 if (DSOUND_PrimaryPlay(dsound
) != DS_OK
)
1096 WARN("DSOUND_PrimaryPlay failed\n");
1098 TRACE("starting playback\n");
1102 LeaveCriticalSection(&(dsound
->mixlock
));
1104 /* in the DSSCL_WRITEPRIMARY mode, the app is totally in charge... */
1105 if (dsound
->state
== STATE_STARTING
) {
1106 if (DSOUND_PrimaryPlay(dsound
) != DS_OK
)
1107 WARN("DSOUND_PrimaryPlay failed\n");
1109 dsound
->state
= STATE_PLAYING
;
1111 else if (dsound
->state
== STATE_STOPPING
) {
1112 if (DSOUND_PrimaryStop(dsound
) != DS_OK
)
1113 WARN("DSOUND_PrimaryStop failed\n");
1115 dsound
->state
= STATE_STOPPED
;
1120 void CALLBACK
DSOUND_timer(UINT timerID
, UINT msg
, DWORD dwUser
, DWORD dw1
, DWORD dw2
)
1122 IDirectSoundImpl
* This
= (IDirectSoundImpl
*)dwUser
;
1123 DWORD start_time
= GetTickCount();
1125 TRACE("(%d,%d,0x%lx,0x%lx,0x%lx)\n",timerID
,msg
,dwUser
,dw1
,dw2
);
1126 TRACE("entering at %ld\n", start_time
);
1128 if (dsound
!= This
) {
1129 ERR("dsound died without killing us?\n");
1130 timeKillEvent(timerID
);
1131 timeEndPeriod(DS_TIME_RES
);
1135 RtlAcquireResourceShared(&(This
->buffer_list_lock
), TRUE
);
1138 DSOUND_PerformMix(This
);
1140 RtlReleaseResource(&(This
->buffer_list_lock
));
1142 end_time
= GetTickCount();
1143 TRACE("completed processing at %ld, duration = %ld\n", end_time
, end_time
- start_time
);
1146 void CALLBACK
DSOUND_callback(HWAVEOUT hwo
, UINT msg
, DWORD dwUser
, DWORD dw1
, DWORD dw2
)
1148 IDirectSoundImpl
* This
= (IDirectSoundImpl
*)dwUser
;
1149 TRACE("(%p,%x,%lx,%lx,%lx)\n",hwo
,msg
,dwUser
,dw1
,dw2
);
1150 TRACE("entering at %ld, msg=%08x(%s)\n", GetTickCount(), msg
,
1151 msg
==MM_WOM_DONE
? "MM_WOM_DONE" : msg
==MM_WOM_CLOSE
? "MM_WOM_CLOSE" :
1152 msg
==MM_WOM_OPEN
? "MM_WOM_OPEN" : "UNKNOWN");
1153 if (msg
== MM_WOM_DONE
) {
1154 DWORD inq
, mixq
, fraglen
, buflen
, pwplay
, playpos
, mixpos
;
1155 if (This
->pwqueue
== (DWORD
)-1) {
1156 TRACE("completed due to reset\n");
1159 /* it could be a bad idea to enter critical section here... if there's lock contention,
1160 * the resulting scheduling delays might obstruct the winmm player thread */
1161 #ifdef SYNC_CALLBACK
1162 EnterCriticalSection(&(This
->mixlock
));
1164 /* retrieve current values */
1165 fraglen
= This
->fraglen
;
1166 buflen
= This
->buflen
;
1167 pwplay
= This
->pwplay
;
1168 playpos
= pwplay
* fraglen
;
1169 mixpos
= This
->mixpos
;
1170 /* check remaining mixed data */
1171 inq
= ((mixpos
< playpos
) ? buflen
: 0) + mixpos
- playpos
;
1172 mixq
= inq
/ fraglen
;
1173 if ((inq
- (mixq
* fraglen
)) > 0) mixq
++;
1174 /* complete the playing buffer */
1175 TRACE("done playing primary pos=%ld\n", playpos
);
1177 if (pwplay
>= DS_HEL_FRAGS
) pwplay
= 0;
1178 /* write new values */
1179 This
->pwplay
= pwplay
;
1181 /* queue new buffer if we have data for it */
1182 if (inq
>1) DSOUND_WaveQueue(This
, inq
-1);
1183 #ifdef SYNC_CALLBACK
1184 LeaveCriticalSection(&(This
->mixlock
));
1187 TRACE("completed\n");