3 * Copyright 1998 Marcus Meissner
4 * Copyright 1998 Rob Riggs
5 * Copyright 2000-2002 TransGaming Technologies, Inc.
6 * Copyright 2007 Peter Dons Tychsen
7 * Copyright 2007 Maarten Lankhorst
8 * Copyright 2011 Owen Rudge for CodeWeavers
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Lesser General Public
12 * License as published by the Free Software Foundation; either
13 * version 2.1 of the License, or (at your option) any later version.
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * Lesser General Public License for more details.
20 * You should have received a copy of the GNU Lesser General Public
21 * License along with this library; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
27 #include <math.h> /* Insomnia - pow() function */
30 #define NONAMELESSSTRUCT
31 #define NONAMELESSUNION
38 #include "wine/debug.h"
42 #include "dsound_private.h"
44 WINE_DEFAULT_DEBUG_CHANNEL(dsound
);
46 void DSOUND_RecalcVolPan(PDSVOLUMEPAN volpan
)
49 TRACE("(%p)\n",volpan
);
51 TRACE("Vol=%d Pan=%d\n", volpan
->lVolume
, volpan
->lPan
);
52 /* the AmpFactors are expressed in 16.16 fixed point */
53 volpan
->dwVolAmpFactor
= (ULONG
) (pow(2.0, volpan
->lVolume
/ 600.0) * 0xffff);
54 /* FIXME: dwPan{Left|Right}AmpFactor */
56 /* FIXME: use calculated vol and pan ampfactors */
57 temp
= (double) (volpan
->lVolume
- (volpan
->lPan
> 0 ? volpan
->lPan
: 0));
58 volpan
->dwTotalLeftAmpFactor
= (ULONG
) (pow(2.0, temp
/ 600.0) * 0xffff);
59 temp
= (double) (volpan
->lVolume
+ (volpan
->lPan
< 0 ? volpan
->lPan
: 0));
60 volpan
->dwTotalRightAmpFactor
= (ULONG
) (pow(2.0, temp
/ 600.0) * 0xffff);
62 TRACE("left = %x, right = %x\n", volpan
->dwTotalLeftAmpFactor
, volpan
->dwTotalRightAmpFactor
);
65 void DSOUND_AmpFactorToVolPan(PDSVOLUMEPAN volpan
)
68 TRACE("(%p)\n",volpan
);
70 TRACE("left=%x, right=%x\n",volpan
->dwTotalLeftAmpFactor
,volpan
->dwTotalRightAmpFactor
);
71 if (volpan
->dwTotalLeftAmpFactor
==0)
74 left
=600 * log(((double)volpan
->dwTotalLeftAmpFactor
) / 0xffff) / log(2);
75 if (volpan
->dwTotalRightAmpFactor
==0)
78 right
=600 * log(((double)volpan
->dwTotalRightAmpFactor
) / 0xffff) / log(2);
81 volpan
->lVolume
=right
;
82 volpan
->dwVolAmpFactor
=volpan
->dwTotalRightAmpFactor
;
87 volpan
->dwVolAmpFactor
=volpan
->dwTotalLeftAmpFactor
;
89 if (volpan
->lVolume
< -10000)
90 volpan
->lVolume
=-10000;
91 volpan
->lPan
=right
-left
;
92 if (volpan
->lPan
< -10000)
95 TRACE("Vol=%d Pan=%d\n", volpan
->lVolume
, volpan
->lPan
);
98 /** Convert a primary buffer position to a pointer position for device->mix_buffer
99 * device: DirectSoundDevice for which to calculate
100 * pos: Primary buffer position to converts
101 * Returns: Offset for mix_buffer
103 DWORD
DSOUND_bufpos_to_mixpos(const DirectSoundDevice
* device
, DWORD pos
)
105 DWORD ret
= pos
* 32 / device
->pwfx
->wBitsPerSample
;
106 if (device
->pwfx
->wBitsPerSample
== 32)
112 * Recalculate the size for temporary buffer, and new writelead
113 * Should be called when one of the following things occur:
114 * - Primary buffer format is changed
115 * - This buffer format (frequency) is changed
117 void DSOUND_RecalcFormat(IDirectSoundBufferImpl
*dsb
)
119 DWORD ichannels
= dsb
->pwfx
->nChannels
;
120 DWORD ochannels
= dsb
->device
->pwfx
->nChannels
;
121 WAVEFORMATEXTENSIBLE
*pwfxe
;
126 pwfxe
= (WAVEFORMATEXTENSIBLE
*) dsb
->pwfx
;
128 if ((pwfxe
->Format
.wFormatTag
== WAVE_FORMAT_IEEE_FLOAT
) || ((pwfxe
->Format
.wFormatTag
== WAVE_FORMAT_EXTENSIBLE
)
129 && (IsEqualGUID(&pwfxe
->SubFormat
, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT
))))
132 /* calculate the 10ms write lead */
133 dsb
->writelead
= (dsb
->freq
/ 100) * dsb
->pwfx
->nBlockAlign
;
137 dsb
->get_aux
= ieee
? getbpp
[4] : getbpp
[dsb
->pwfx
->wBitsPerSample
/8 - 1];
138 dsb
->put_aux
= putbpp
[dsb
->device
->pwfx
->wBitsPerSample
/8 - 1];
140 dsb
->get
= dsb
->get_aux
;
141 dsb
->put
= dsb
->put_aux
;
143 if (ichannels
== ochannels
)
145 dsb
->mix_channels
= ichannels
;
146 if (ichannels
> 32) {
147 FIXME("Copying %u channels is unsupported, limiting to first 32\n", ichannels
);
148 dsb
->mix_channels
= 32;
151 else if (ichannels
== 1)
153 dsb
->mix_channels
= 1;
154 dsb
->put
= put_mono2stereo
;
156 else if (ochannels
== 1)
158 dsb
->mix_channels
= 1;
164 FIXME("Conversion from %u to %u channels is not implemented, falling back to stereo\n", ichannels
, ochannels
);
165 dsb
->mix_channels
= 2;
170 * Check for application callback requests for when the play position
171 * reaches certain points.
173 * The offsets that will be triggered will be those between the recorded
174 * "last played" position for the buffer (i.e. dsb->playpos) and "len" bytes
175 * beyond that position.
177 void DSOUND_CheckEvent(const IDirectSoundBufferImpl
*dsb
, DWORD playpos
, int len
)
181 LPDSBPOSITIONNOTIFY event
;
182 TRACE("(%p,%d)\n",dsb
,len
);
184 if (dsb
->nrofnotifies
== 0)
187 TRACE("(%p) buflen = %d, playpos = %d, len = %d\n",
188 dsb
, dsb
->buflen
, playpos
, len
);
189 for (i
= 0; i
< dsb
->nrofnotifies
; i
++) {
190 event
= dsb
->notifies
+ i
;
191 offset
= event
->dwOffset
;
192 TRACE("checking %d, position %d, event = %p\n",
193 i
, offset
, event
->hEventNotify
);
194 /* DSBPN_OFFSETSTOP has to be the last element. So this is */
195 /* OK. [Inside DirectX, p274] */
196 /* Windows does not seem to enforce this, and some apps rely */
197 /* on that, so we can't stop there. */
199 /* This also means we can't sort the entries by offset, */
200 /* because DSBPN_OFFSETSTOP == -1 */
201 if (offset
== DSBPN_OFFSETSTOP
) {
202 if (dsb
->state
== STATE_STOPPED
) {
203 SetEvent(event
->hEventNotify
);
204 TRACE("signalled event %p (%d)\n", event
->hEventNotify
, i
);
208 if ((playpos
+ len
) >= dsb
->buflen
) {
209 if ((offset
< ((playpos
+ len
) % dsb
->buflen
)) ||
210 (offset
>= playpos
)) {
211 TRACE("signalled event %p (%d)\n", event
->hEventNotify
, i
);
212 SetEvent(event
->hEventNotify
);
215 if ((offset
>= playpos
) && (offset
< (playpos
+ len
))) {
216 TRACE("signalled event %p (%d)\n", event
->hEventNotify
, i
);
217 SetEvent(event
->hEventNotify
);
223 static inline float get_current_sample(const IDirectSoundBufferImpl
*dsb
,
224 DWORD mixpos
, DWORD channel
)
226 if (mixpos
>= dsb
->buflen
&& !(dsb
->playflags
& DSBPLAY_LOOPING
))
228 return dsb
->get(dsb
, mixpos
% dsb
->buflen
, channel
);
232 * Copy frames from the given input buffer to the given output buffer.
233 * Translate 8 <-> 16 bits and mono <-> stereo
235 static inline void cp_fields(IDirectSoundBufferImpl
*dsb
,
236 UINT ostride
, UINT count
, float *freqAcc
)
238 DWORD ipos
= dsb
->sec_mixpos
;
239 UINT istride
= dsb
->pwfx
->nBlockAlign
, i
;
242 for (i
= 0; i
< count
; ++i
){
244 for (channel
= 0; channel
< dsb
->mix_channels
; channel
++)
245 dsb
->put(dsb
, opos
, channel
,
246 get_current_sample(dsb
, ipos
, channel
));
247 *freqAcc
+= dsb
->freqAdjust
;
248 ipos
+= ((DWORD
)*freqAcc
) * istride
;
249 *freqAcc
-= truncf(*freqAcc
);
253 if (ipos
>= dsb
->buflen
) {
254 if (dsb
->playflags
& DSBPLAY_LOOPING
)
258 dsb
->state
= STATE_STOPPED
;
262 dsb
->sec_mixpos
= ipos
;
266 * Calculate the distance between two buffer offsets, taking wraparound
269 static inline DWORD
DSOUND_BufPtrDiff(DWORD buflen
, DWORD ptr1
, DWORD ptr2
)
271 /* If these asserts fail, the problem is not here, but in the underlying code */
272 assert(ptr1
< buflen
);
273 assert(ptr2
< buflen
);
277 return buflen
+ ptr1
- ptr2
;
281 * Mix at most the given amount of data into the allocated temporary buffer
282 * of the given secondary buffer, starting from the dsb's first currently
283 * unsampled frame (writepos), translating frequency (pitch), stereo/mono
284 * and bits-per-sample so that it is ideal for the primary buffer.
285 * Doesn't perform any mixing - this is a straight copy/convert operation.
287 * dsb = the secondary buffer
288 * writepos = Starting position of changed buffer
289 * len = number of bytes to resample from writepos
291 * NOTE: writepos + len <= buflen. When called by mixer, MixOne makes sure of this.
293 static void DSOUND_MixToTemporary(IDirectSoundBufferImpl
*dsb
, DWORD tmp_len
)
295 INT oAdvance
= dsb
->device
->pwfx
->nBlockAlign
;
296 INT size
= tmp_len
/ oAdvance
;
298 if (dsb
->device
->tmp_buffer_len
< tmp_len
|| !dsb
->device
->tmp_buffer
)
300 dsb
->device
->tmp_buffer_len
= tmp_len
;
301 if (dsb
->device
->tmp_buffer
)
302 dsb
->device
->tmp_buffer
= HeapReAlloc(GetProcessHeap(), 0, dsb
->device
->tmp_buffer
, tmp_len
);
304 dsb
->device
->tmp_buffer
= HeapAlloc(GetProcessHeap(), 0, tmp_len
);
307 cp_fields(dsb
, oAdvance
, size
, &dsb
->freqAcc
);
310 /** Apply volume to the given soundbuffer from (primary) position writepos and length len
311 * Returns: NULL if no volume needs to be applied
312 * or else a memory handle that holds 'len' volume adjusted buffer */
313 static LPBYTE
DSOUND_MixerVol(const IDirectSoundBufferImpl
*dsb
, INT len
)
319 INT nChannels
= dsb
->device
->pwfx
->nChannels
;
320 LPBYTE mem
= dsb
->device
->tmp_buffer
;
322 TRACE("(%p,%d)\n",dsb
,len
);
323 TRACE("left = %x, right = %x\n", dsb
->volpan
.dwTotalLeftAmpFactor
,
324 dsb
->volpan
.dwTotalRightAmpFactor
);
326 if ((!(dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLPAN
) || (dsb
->volpan
.lPan
== 0)) &&
327 (!(dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLVOLUME
) || (dsb
->volpan
.lVolume
== 0)) &&
328 !(dsb
->dsbd
.dwFlags
& DSBCAPS_CTRL3D
))
329 return NULL
; /* Nothing to do */
331 if (nChannels
!= 1 && nChannels
!= 2)
333 FIXME("There is no support for %d channels\n", nChannels
);
337 if (dsb
->device
->pwfx
->wBitsPerSample
!= 8 && dsb
->device
->pwfx
->wBitsPerSample
!= 16)
339 FIXME("There is no support for %d bpp\n", dsb
->device
->pwfx
->wBitsPerSample
);
343 assert(dsb
->device
->tmp_buffer_len
>= len
&& dsb
->device
->tmp_buffer
);
345 bpc
= dsb
->device
->tmp_buffer
;
348 vLeft
= dsb
->volpan
.dwTotalLeftAmpFactor
;
350 vRight
= dsb
->volpan
.dwTotalRightAmpFactor
;
354 switch (dsb
->device
->pwfx
->wBitsPerSample
) {
356 /* 8-bit WAV is unsigned, but we need to operate */
357 /* on signed data for this to work properly */
358 for (i
= 0; i
< len
-1; i
+=2) {
359 *(bpc
++) = (((*(mem
++) - 128) * vLeft
) >> 16) + 128;
360 *(bpc
++) = (((*(mem
++) - 128) * vRight
) >> 16) + 128;
362 if (len
% 2 == 1 && nChannels
== 1)
363 *(bpc
++) = (((*(mem
++) - 128) * vLeft
) >> 16) + 128;
366 /* 16-bit WAV is signed -- much better */
367 for (i
= 0; i
< len
-3; i
+= 4) {
368 *(bps
++) = (*(mems
++) * vLeft
) >> 16;
369 *(bps
++) = (*(mems
++) * vRight
) >> 16;
371 if (len
% 4 == 2 && nChannels
== 1)
372 *(bps
++) = ((INT
)*(mems
++) * vLeft
) >> 16;
375 return dsb
->device
->tmp_buffer
;
379 * Mix (at most) the given number of bytes into the given position of the
380 * device buffer, from the secondary buffer "dsb" (starting at the current
381 * mix position for that buffer).
383 * Returns the number of bytes actually mixed into the device buffer. This
384 * will match fraglen unless the end of the secondary buffer is reached
385 * (and it is not looping).
387 * dsb = the secondary buffer to mix from
388 * writepos = position (offset) in device buffer to write at
389 * fraglen = number of bytes to mix
391 static DWORD
DSOUND_MixInBuffer(IDirectSoundBufferImpl
*dsb
, DWORD writepos
, DWORD fraglen
)
395 DWORD oldpos
, mixbufpos
;
397 TRACE("sec_mixpos=%d/%d\n", dsb
->sec_mixpos
, dsb
->buflen
);
398 TRACE("(%p,%d,%d)\n",dsb
,writepos
,fraglen
);
400 if (len
% dsb
->device
->pwfx
->nBlockAlign
) {
401 INT nBlockAlign
= dsb
->device
->pwfx
->nBlockAlign
;
402 ERR("length not a multiple of block size, len = %d, block size = %d\n", len
, nBlockAlign
);
403 len
-= len
% nBlockAlign
; /* data alignment */
406 /* Resample buffer to temporary buffer specifically allocated for this purpose, if needed */
407 oldpos
= dsb
->sec_mixpos
;
409 DSOUND_MixToTemporary(dsb
, len
);
410 ibuf
= dsb
->device
->tmp_buffer
;
412 /* Apply volume if needed */
413 volbuf
= DSOUND_MixerVol(dsb
, len
);
417 mixbufpos
= DSOUND_bufpos_to_mixpos(dsb
->device
, writepos
);
418 /* Now mix the temporary buffer into the devices main buffer */
419 if ((writepos
+ len
) <= dsb
->device
->buflen
)
420 dsb
->device
->mixfunction(ibuf
, dsb
->device
->mix_buffer
+ mixbufpos
, len
);
423 DWORD todo
= dsb
->device
->buflen
- writepos
;
424 dsb
->device
->mixfunction(ibuf
, dsb
->device
->mix_buffer
+ mixbufpos
, todo
);
425 dsb
->device
->mixfunction(ibuf
+ todo
, dsb
->device
->mix_buffer
, len
- todo
);
428 /* check for notification positions */
429 if (dsb
->dsbd
.dwFlags
& DSBCAPS_CTRLPOSITIONNOTIFY
&&
430 dsb
->state
!= STATE_STARTING
) {
431 INT ilen
= DSOUND_BufPtrDiff(dsb
->buflen
, dsb
->sec_mixpos
, oldpos
);
432 DSOUND_CheckEvent(dsb
, oldpos
, ilen
);
435 /* increase mix position */
436 dsb
->primary_mixpos
+= len
;
437 dsb
->primary_mixpos
%= dsb
->device
->buflen
;
443 * Mix some frames from the given secondary buffer "dsb" into the device
446 * dsb = the secondary buffer
447 * playpos = the current play position in the device buffer (primary buffer)
448 * writepos = the current safe-to-write position in the device buffer
449 * mixlen = the maximum number of bytes in the primary buffer to mix, from the
452 * Returns: the number of bytes beyond the writepos that were mixed.
454 static DWORD
DSOUND_MixOne(IDirectSoundBufferImpl
*dsb
, DWORD writepos
, DWORD mixlen
)
456 /* The buffer's primary_mixpos may be before or after the device
457 * buffer's mixpos, but both must be ahead of writepos. */
460 TRACE("(%p,%d,%d)\n",dsb
,writepos
,mixlen
);
461 TRACE("writepos=%d, primary_mixpos=%d, mixlen=%d\n", writepos
, dsb
->primary_mixpos
, mixlen
);
462 TRACE("looping=%d, leadin=%d\n", dsb
->playflags
, dsb
->leadin
);
464 /* If leading in, only mix about 20 ms, and 'skip' mixing the rest, for more fluid pointer advancement */
465 if (dsb
->leadin
&& dsb
->state
== STATE_STARTING
)
467 if (mixlen
> 2 * dsb
->device
->fraglen
)
469 dsb
->primary_mixpos
+= mixlen
- 2 * dsb
->device
->fraglen
;
470 dsb
->primary_mixpos
%= dsb
->device
->buflen
;
475 /* calculate how much pre-buffering has already been done for this buffer */
476 primary_done
= DSOUND_BufPtrDiff(dsb
->device
->buflen
, dsb
->primary_mixpos
, writepos
);
479 if(mixlen
< primary_done
)
481 /* Should *NEVER* happen */
482 ERR("Fatal error. Under/Overflow? primary_done=%d, mixpos=%d/%d, primary_mixpos=%d, writepos=%d, mixlen=%d\n", primary_done
,dsb
->sec_mixpos
, dsb
->buflen
, dsb
->primary_mixpos
, writepos
, mixlen
);
483 dsb
->primary_mixpos
= writepos
+ mixlen
;
484 dsb
->primary_mixpos
%= dsb
->device
->buflen
;
488 /* take into account already mixed data */
489 mixlen
-= primary_done
;
491 TRACE("primary_done=%d, mixlen (primary) = %i\n", primary_done
, mixlen
);
496 /* First try to mix to the end of the buffer if possible
497 * Theoretically it would allow for better optimization
499 DSOUND_MixInBuffer(dsb
, dsb
->primary_mixpos
, mixlen
);
501 /* re-calculate the primary done */
502 primary_done
= DSOUND_BufPtrDiff(dsb
->device
->buflen
, dsb
->primary_mixpos
, writepos
);
504 TRACE("new primary_mixpos=%d, total mixed data=%d\n", dsb
->primary_mixpos
, primary_done
);
506 /* Report back the total prebuffered amount for this buffer */
511 * For a DirectSoundDevice, go through all the currently playing buffers and
512 * mix them in to the device buffer.
514 * writepos = the current safe-to-write position in the primary buffer
515 * mixlen = the maximum amount to mix into the primary buffer
516 * (beyond the current writepos)
517 * recover = true if the sound device may have been reset and the write
518 * position in the device buffer changed
519 * all_stopped = reports back if all buffers have stopped
521 * Returns: the length beyond the writepos that was mixed to.
524 static DWORD
DSOUND_MixToPrimary(const DirectSoundDevice
*device
, DWORD writepos
, DWORD mixlen
, BOOL recover
, BOOL
*all_stopped
)
528 IDirectSoundBufferImpl
*dsb
;
530 /* unless we find a running buffer, all have stopped */
533 TRACE("(%d,%d,%d)\n", writepos
, mixlen
, recover
);
534 for (i
= 0; i
< device
->nrofbuffers
; i
++) {
535 dsb
= device
->buffers
[i
];
537 TRACE("MixToPrimary for %p, state=%d\n", dsb
, dsb
->state
);
539 if (dsb
->buflen
&& dsb
->state
) {
540 TRACE("Checking %p, mixlen=%d\n", dsb
, mixlen
);
541 RtlAcquireResourceShared(&dsb
->lock
, TRUE
);
542 /* if buffer is stopping it is stopped now */
543 if (dsb
->state
== STATE_STOPPING
) {
544 dsb
->state
= STATE_STOPPED
;
545 DSOUND_CheckEvent(dsb
, 0, 0);
546 } else if (dsb
->state
!= STATE_STOPPED
) {
548 /* if recovering, reset the mix position */
549 if ((dsb
->state
== STATE_STARTING
) || recover
) {
550 dsb
->primary_mixpos
= writepos
;
553 /* if the buffer was starting, it must be playing now */
554 if (dsb
->state
== STATE_STARTING
)
555 dsb
->state
= STATE_PLAYING
;
557 /* mix next buffer into the main buffer */
558 len
= DSOUND_MixOne(dsb
, writepos
, mixlen
);
560 if (!minlen
) minlen
= len
;
562 /* record the minimum length mixed from all buffers */
563 /* we only want to return the length which *all* buffers have mixed */
564 else if (len
) minlen
= (len
< minlen
) ? len
: minlen
;
566 *all_stopped
= FALSE
;
568 RtlReleaseResource(&dsb
->lock
);
572 TRACE("Mixed at least %d from all buffers\n", minlen
);
577 * Add buffers to the emulated wave device system.
579 * device = The current dsound playback device
580 * force = If TRUE, the function will buffer up as many frags as possible,
581 * even though and will ignore the actual state of the primary buffer.
586 static void DSOUND_WaveQueue(DirectSoundDevice
*device
, BOOL force
)
588 DWORD prebuf_frames
, buf_offs_bytes
, wave_fragpos
;
593 TRACE("(%p)\n", device
);
595 /* calculate the current wave frag position */
596 wave_fragpos
= (device
->pwplay
+ device
->pwqueue
) % device
->helfrags
;
598 /* calculate the current wave write position */
599 buf_offs_bytes
= wave_fragpos
* device
->fraglen
;
601 TRACE("wave_fragpos = %i, buf_offs_bytes = %i, pwqueue = %i, prebuf = %i\n",
602 wave_fragpos
, buf_offs_bytes
, device
->pwqueue
, device
->prebuf
);
606 /* check remaining prebuffered frags */
607 prebuf_frags
= device
->mixpos
/ device
->fraglen
;
608 if (prebuf_frags
== device
->helfrags
)
610 TRACE("wave_fragpos = %d, mixpos_frags = %d\n", wave_fragpos
, prebuf_frags
);
611 if (prebuf_frags
< wave_fragpos
)
612 prebuf_frags
+= device
->helfrags
;
613 prebuf_frags
-= wave_fragpos
;
614 TRACE("wanted prebuf_frags = %d\n", prebuf_frags
);
617 /* buffer the maximum amount of frags */
618 prebuf_frags
= device
->prebuf
;
620 /* limit to the queue we have left */
621 if ((prebuf_frags
+ device
->pwqueue
) > device
->prebuf
)
622 prebuf_frags
= device
->prebuf
- device
->pwqueue
;
624 TRACE("prebuf_frags = %i\n", prebuf_frags
);
630 device
->pwqueue
+= prebuf_frags
;
632 prebuf_frames
= ((prebuf_frags
+ wave_fragpos
> device
->helfrags
) ?
633 (device
->helfrags
- wave_fragpos
) :
634 (prebuf_frags
)) * device
->fraglen
/ device
->pwfx
->nBlockAlign
;
636 hr
= IAudioRenderClient_GetBuffer(device
->render
, prebuf_frames
, &buffer
);
638 WARN("GetBuffer failed: %08x\n", hr
);
642 memcpy(buffer
, device
->buffer
+ buf_offs_bytes
,
643 prebuf_frames
* device
->pwfx
->nBlockAlign
);
645 hr
= IAudioRenderClient_ReleaseBuffer(device
->render
, prebuf_frames
, 0);
647 WARN("ReleaseBuffer failed: %08x\n", hr
);
651 /* check if anything wrapped */
652 prebuf_frags
= prebuf_frags
+ wave_fragpos
- device
->helfrags
;
653 if(prebuf_frags
> 0){
654 prebuf_frames
= prebuf_frags
* device
->fraglen
/ device
->pwfx
->nBlockAlign
;
656 hr
= IAudioRenderClient_GetBuffer(device
->render
, prebuf_frames
, &buffer
);
658 WARN("GetBuffer failed: %08x\n", hr
);
662 memcpy(buffer
, device
->buffer
, prebuf_frames
* device
->pwfx
->nBlockAlign
);
664 hr
= IAudioRenderClient_ReleaseBuffer(device
->render
, prebuf_frames
, 0);
666 WARN("ReleaseBuffer failed: %08x\n", hr
);
671 TRACE("queue now = %i\n", device
->pwqueue
);
675 * Perform mixing for a Direct Sound device. That is, go through all the
676 * secondary buffers (the sound bites currently playing) and mix them in
677 * to the primary buffer (the device buffer).
679 static void DSOUND_PerformMix(DirectSoundDevice
*device
)
681 UINT64 clock_pos
, clock_freq
, pos_bytes
;
685 TRACE("(%p)\n", device
);
688 EnterCriticalSection(&device
->mixlock
);
690 hr
= IAudioClock_GetFrequency(device
->clock
, &clock_freq
);
692 WARN("GetFrequency failed: %08x\n", hr
);
693 LeaveCriticalSection(&device
->mixlock
);
697 hr
= IAudioClock_GetPosition(device
->clock
, &clock_pos
, NULL
);
699 WARN("GetCurrentPadding failed: %08x\n", hr
);
700 LeaveCriticalSection(&device
->mixlock
);
704 pos_bytes
= (clock_pos
* device
->pwfx
->nSamplesPerSec
* device
->pwfx
->nBlockAlign
) / clock_freq
;
706 delta_frags
= (pos_bytes
- device
->last_pos_bytes
) / device
->fraglen
;
708 device
->pwplay
+= delta_frags
;
709 device
->pwplay
%= device
->helfrags
;
710 device
->pwqueue
-= delta_frags
;
711 device
->last_pos_bytes
= pos_bytes
- (pos_bytes
% device
->fraglen
);
714 if (device
->priolevel
!= DSSCL_WRITEPRIMARY
) {
715 BOOL recover
= FALSE
, all_stopped
= FALSE
;
716 DWORD playpos
, writepos
, writelead
, maxq
, frag
, prebuff_max
, prebuff_left
, size1
, size2
, mixplaypos
, mixplaypos2
;
720 /* the sound of silence */
721 nfiller
= device
->pwfx
->wBitsPerSample
== 8 ? 128 : 0;
723 /* get the position in the primary buffer */
724 if (DSOUND_PrimaryGetPosition(device
, &playpos
, &writepos
) != 0){
725 LeaveCriticalSection(&(device
->mixlock
));
729 TRACE("primary playpos=%d, writepos=%d, clrpos=%d, mixpos=%d, buflen=%d\n",
730 playpos
,writepos
,device
->playpos
,device
->mixpos
,device
->buflen
);
731 assert(device
->playpos
< device
->buflen
);
733 mixplaypos
= DSOUND_bufpos_to_mixpos(device
, device
->playpos
);
734 mixplaypos2
= DSOUND_bufpos_to_mixpos(device
, playpos
);
736 /* calc maximum prebuff */
737 prebuff_max
= (device
->prebuf
* device
->fraglen
);
738 if (playpos
+ prebuff_max
>= device
->helfrags
* device
->fraglen
)
739 prebuff_max
+= device
->buflen
- device
->helfrags
* device
->fraglen
;
741 /* check how close we are to an underrun. It occurs when the writepos overtakes the mixpos */
742 prebuff_left
= DSOUND_BufPtrDiff(device
->buflen
, device
->mixpos
, playpos
);
743 writelead
= DSOUND_BufPtrDiff(device
->buflen
, writepos
, playpos
);
745 /* check for underrun. underrun occurs when the write position passes the mix position
746 * also wipe out just-played sound data */
747 if((prebuff_left
> prebuff_max
) || (device
->state
== STATE_STOPPED
) || (device
->state
== STATE_STARTING
)){
748 if (device
->state
== STATE_STOPPING
|| device
->state
== STATE_PLAYING
)
749 WARN("Probable buffer underrun\n");
750 else TRACE("Buffer starting or buffer underrun\n");
752 /* recover mixing for all buffers */
755 /* reset mix position to write position */
756 device
->mixpos
= writepos
;
758 ZeroMemory(device
->mix_buffer
, device
->mix_buffer_len
);
759 ZeroMemory(device
->buffer
, device
->buflen
);
760 } else if (playpos
< device
->playpos
) {
761 buf1
= device
->buffer
+ device
->playpos
;
762 buf2
= device
->buffer
;
763 size1
= device
->buflen
- device
->playpos
;
765 FillMemory(device
->mix_buffer
+ mixplaypos
, device
->mix_buffer_len
- mixplaypos
, 0);
766 FillMemory(device
->mix_buffer
, mixplaypos2
, 0);
767 FillMemory(buf1
, size1
, nfiller
);
768 if (playpos
&& (!buf2
|| !size2
))
769 FIXME("%d: (%d, %d)=>(%d, %d) There should be an additional buffer here!!\n", __LINE__
, device
->playpos
, device
->mixpos
, playpos
, writepos
);
770 FillMemory(buf2
, size2
, nfiller
);
772 buf1
= device
->buffer
+ device
->playpos
;
774 size1
= playpos
- device
->playpos
;
776 FillMemory(device
->mix_buffer
+ mixplaypos
, mixplaypos2
- mixplaypos
, 0);
777 FillMemory(buf1
, size1
, nfiller
);
779 device
->playpos
= playpos
;
781 /* find the maximum we can prebuffer from current write position */
782 maxq
= (writelead
< prebuff_max
) ? (prebuff_max
- writelead
) : 0;
784 TRACE("prebuff_left = %d, prebuff_max = %dx%d=%d, writelead=%d\n",
785 prebuff_left
, device
->prebuf
, device
->fraglen
, prebuff_max
, writelead
);
788 frag
= DSOUND_MixToPrimary(device
, writepos
, maxq
, recover
, &all_stopped
);
790 if (frag
+ writepos
> device
->buflen
)
792 DWORD todo
= device
->buflen
- writepos
;
793 device
->normfunction(device
->mix_buffer
+ DSOUND_bufpos_to_mixpos(device
, writepos
), device
->buffer
+ writepos
, todo
);
794 device
->normfunction(device
->mix_buffer
, device
->buffer
, frag
- todo
);
797 device
->normfunction(device
->mix_buffer
+ DSOUND_bufpos_to_mixpos(device
, writepos
), device
->buffer
+ writepos
, frag
);
799 /* update the mix position, taking wrap-around into account */
800 device
->mixpos
= writepos
+ frag
;
801 device
->mixpos
%= device
->buflen
;
803 /* update prebuff left */
804 prebuff_left
= DSOUND_BufPtrDiff(device
->buflen
, device
->mixpos
, playpos
);
806 /* check if have a whole fragment */
807 if (prebuff_left
>= device
->fraglen
){
809 /* update the wave queue */
810 DSOUND_WaveQueue(device
, FALSE
);
812 /* buffers are full. start playing if applicable */
813 if(device
->state
== STATE_STARTING
){
814 TRACE("started primary buffer\n");
815 if(DSOUND_PrimaryPlay(device
) != DS_OK
){
816 WARN("DSOUND_PrimaryPlay failed\n");
819 /* we are playing now */
820 device
->state
= STATE_PLAYING
;
824 /* buffers are full. start stopping if applicable */
825 if(device
->state
== STATE_STOPPED
){
826 TRACE("restarting primary buffer\n");
827 if(DSOUND_PrimaryPlay(device
) != DS_OK
){
828 WARN("DSOUND_PrimaryPlay failed\n");
831 /* start stopping again. as soon as there is no more data, it will stop */
832 device
->state
= STATE_STOPPING
;
837 /* if device was stopping, its for sure stopped when all buffers have stopped */
838 else if((all_stopped
== TRUE
) && (device
->state
== STATE_STOPPING
)){
839 TRACE("All buffers have stopped. Stopping primary buffer\n");
840 device
->state
= STATE_STOPPED
;
842 /* stop the primary buffer now */
843 DSOUND_PrimaryStop(device
);
848 DSOUND_WaveQueue(device
, TRUE
);
850 /* in the DSSCL_WRITEPRIMARY mode, the app is totally in charge... */
851 if (device
->state
== STATE_STARTING
) {
852 if (DSOUND_PrimaryPlay(device
) != DS_OK
)
853 WARN("DSOUND_PrimaryPlay failed\n");
855 device
->state
= STATE_PLAYING
;
857 else if (device
->state
== STATE_STOPPING
) {
858 if (DSOUND_PrimaryStop(device
) != DS_OK
)
859 WARN("DSOUND_PrimaryStop failed\n");
861 device
->state
= STATE_STOPPED
;
865 LeaveCriticalSection(&(device
->mixlock
));
869 void CALLBACK
DSOUND_timer(UINT timerID
, UINT msg
, DWORD_PTR dwUser
,
870 DWORD_PTR dw1
, DWORD_PTR dw2
)
872 DirectSoundDevice
* device
= (DirectSoundDevice
*)dwUser
;
873 DWORD start_time
= GetTickCount();
875 TRACE("(%d,%d,0x%lx,0x%lx,0x%lx)\n",timerID
,msg
,dwUser
,dw1
,dw2
);
876 TRACE("entering at %d\n", start_time
);
878 RtlAcquireResourceShared(&(device
->buffer_list_lock
), TRUE
);
881 DSOUND_PerformMix(device
);
883 RtlReleaseResource(&(device
->buffer_list_lock
));
885 end_time
= GetTickCount();
886 TRACE("completed processing at %d, duration = %d\n", end_time
, end_time
- start_time
);