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[reactos.git] / dll / win32 / msacm32 / pcmconverter.c
1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
2
3 /*
4 * MSACM32 library
5 *
6 * Copyright 2000 Eric Pouech
7 * Copyright 2004 Robert Reif
8 *
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 *
23 * FIXME / TODO list
24 * + get rid of hack for PCM_DriverProc (msacm32.dll shouldn't export
25 * a DriverProc, but this would require implementing a generic
26 * embedded driver handling scheme in msacm32.dll which isn't done yet
27 */
28
29 #include "config.h"
30
31 #include <assert.h>
32 #include <stdarg.h>
33 #include <string.h>
34
35 #include "windef.h"
36 #include "winbase.h"
37 #include "mmsystem.h"
38 #define NOBITMAP
39 #include "mmreg.h"
40 #include "msacm.h"
41 #include "wingdi.h"
42 #include "winnls.h"
43 #include "winuser.h"
44
45 #include "msacmdrv.h"
46 #include "wineacm.h"
47
48 #include "wine/debug.h"
49
50 WINE_DEFAULT_DEBUG_CHANNEL(msacm);
51
52 /***********************************************************************
53 * PCM_drvOpen
54 */
55 static DWORD PCM_drvOpen(LPCSTR str, PACMDRVOPENDESCW adod)
56 {
57 TRACE("(%p, %p)\n", str, adod);
58
59 return (adod == NULL) ||
60 (adod->fccType == ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC &&
61 adod->fccComp == ACMDRIVERDETAILS_FCCCOMP_UNDEFINED);
62 }
63
64 /***********************************************************************
65 * PCM_drvClose
66 */
67 static DWORD PCM_drvClose(DWORD dwDevID)
68 {
69 TRACE("(%d)\n", dwDevID);
70
71 return 1;
72 }
73
74 #define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
75 #define NUM_OF(a,b) ((a)/(b))
76
77 /* flags for fdwDriver */
78 #define PCM_RESAMPLE 1
79
80 typedef void (*PCM_CONVERT_KEEP_RATE)(const unsigned char*, int, unsigned char*);
81
82 typedef void (*PCM_CONVERT_CHANGE_RATE)(const DWORD, const unsigned char*, DWORD*, const DWORD, unsigned char*, DWORD*);
83
84 /* data used while converting */
85 typedef struct tagAcmPcmData {
86 /* conversion routine, depending if rate conversion is required */
87 union {
88 PCM_CONVERT_KEEP_RATE cvtKeepRate;
89 PCM_CONVERT_CHANGE_RATE cvtChangeRate;
90 } cvt;
91 } AcmPcmData;
92
93 /* table to list all supported formats... those are the basic ones. this
94 * also helps given a unique index to each of the supported formats
95 */
96 static const struct {
97 int nChannels;
98 int nBits;
99 int rate;
100 } PCM_Formats[] = {
101 {1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000}, {1, 24, 8000}, {2, 24, 8000},
102 {1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025}, {1, 24, 11025}, {2, 24, 11025},
103 {1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050}, {1, 24, 22050}, {2, 24, 22050},
104 {1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100}, {1, 24, 44100}, {2, 24, 44100},
105 {1, 8, 48000}, {2, 8, 48000}, {1, 16, 48000}, {2, 16, 48000}, {1, 24, 48000}, {2, 24, 48000},
106 {1, 8, 96000}, {2, 8, 96000}, {1, 16, 96000}, {2, 16, 96000}, {1, 24, 96000}, {2, 24, 96000},
107 };
108
109 /***********************************************************************
110 * PCM_GetFormatIndex
111 */
112 static DWORD PCM_GetFormatIndex(LPWAVEFORMATEX wfx)
113 {
114 unsigned int i;
115 TRACE("(%p)\n", wfx);
116
117 for (i = 0; i < NUM_PCM_FORMATS; i++) {
118 if (wfx->nChannels == PCM_Formats[i].nChannels &&
119 wfx->nSamplesPerSec == PCM_Formats[i].rate &&
120 wfx->wBitsPerSample == PCM_Formats[i].nBits)
121 return i;
122 }
123 return 0xFFFFFFFF;
124 }
125
126 /* PCM Conversions:
127 *
128 * parameters:
129 * + 8 bit unsigned vs 16 bit signed
130 * + mono vs stereo (1 or 2 channels)
131 * + sampling rate (8.0, 11.025, 22.05, 44.1 kHz are defined, but algo
132 * shall work in all cases)
133 *
134 * mono => stereo: copy the same sample on Left & Right channels
135 * stereo => mono: use the sum of Left & Right channels
136 */
137
138 /***********************************************************************
139 * C816
140 *
141 * Converts a 8 bit sample to a 16 bit one
142 */
143 static inline short C816(unsigned char b)
144 {
145 return (b - 128) << 8;
146 }
147
148 /***********************************************************************
149 * C168
150 *
151 * Converts a 16 bit sample to a 8 bit one (data loss !!)
152 */
153 static inline unsigned char C168(short s)
154 {
155 return HIBYTE(s) ^ (unsigned char)0x80;
156 }
157
158 /***********************************************************************
159 * C248
160 *
161 * Converts a 24 bit sample to a 8 bit one (data loss !!)
162 */
163 static inline unsigned char C248(int s)
164 {
165 return HIBYTE(HIWORD(s)) ^ (unsigned char)0x80;
166 }
167
168 /***********************************************************************
169 * C2416
170 *
171 * Converts a 24 bit sample to a 16 bit one (data loss !!)
172 */
173 static inline short C2416(int s)
174 {
175 return HIWORD(s);
176 }
177
178 /***********************************************************************
179 * R16
180 *
181 * Read a 16 bit sample (correctly handles endianness)
182 */
183 static inline short R16(const unsigned char* src)
184 {
185 return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
186 }
187
188 /***********************************************************************
189 * R24
190 *
191 * Read a 24 bit sample (correctly handles endianness)
192 * Note, to support signed arithmetic, the values are shifted high in the int
193 * and low 8 bytes are unused.
194 */
195 static inline int R24(const unsigned char* src)
196 {
197 return ((int)src[0] | (int)src[1] << 8 | (int)src[2] << 16) << 8;
198 }
199
200 /***********************************************************************
201 * W16
202 *
203 * Write a 16 bit sample (correctly handles endianness)
204 */
205 static inline void W16(unsigned char* dst, short s)
206 {
207 dst[0] = LOBYTE(s);
208 dst[1] = HIBYTE(s);
209 }
210
211 /***********************************************************************
212 * W24
213 *
214 * Write a 24 bit sample (correctly handles endianness)
215 */
216 static inline void W24(unsigned char* dst, int s)
217 {
218 dst[0] = HIBYTE(LOWORD(s));
219 dst[1] = LOBYTE(HIWORD(s));
220 dst[2] = HIBYTE(HIWORD(s));
221 }
222
223 /***********************************************************************
224 * M24
225 *
226 * Convert the (l,r) 24 bit stereo sample into a 24 bit mono
227 * (takes the sum of the two values)
228 */
229 static inline int M24(int l, int r)
230 {
231 LONGLONG sum = l + r;
232
233 /* clip sum to saturation */
234 if (sum > 0x7fffff00)
235 sum = 0x7fffff00;
236 else if (sum < -0x7fffff00)
237 sum = -0x7fffff00;
238
239 return sum;
240 }
241
242 /***********************************************************************
243 * M16
244 *
245 * Convert the (l,r) 16 bit stereo sample into a 16 bit mono
246 * (takes the sum of the two values)
247 */
248 static inline short M16(short l, short r)
249 {
250 int sum = l + r;
251
252 /* clip sum to saturation */
253 if (sum > 32767)
254 sum = 32767;
255 else if (sum < -32768)
256 sum = -32768;
257
258 return sum;
259 }
260
261 /***********************************************************************
262 * M8
263 *
264 * Convert the (l,r) 8 bit stereo sample into a 8 bit mono
265 * (takes the sum of the two values)
266 */
267 static inline unsigned char M8(unsigned char a, unsigned char b)
268 {
269 int l = a - 128;
270 int r = b - 128;
271 int sum = (l + r) + 128;
272
273 /* clip sum to saturation */
274 if (sum > 0xff)
275 sum = 0xff;
276 else if (sum < 0)
277 sum = 0;
278
279 return sum;
280 }
281
282 /* the conversion routines without rate conversion are labelled cvt<X><Y><N><M>K
283 * where :
284 * <X> is the (M)ono/(S)tereo configuration of input channel
285 * <Y> is the (M)ono/(S)tereo configuration of output channel
286 * <N> is the number of bits of input channel (8 or 16)
287 * <M> is the number of bits of output channel (8 or 16)
288 *
289 * in the parameters, ns is always the number of samples, so the size of input
290 * buffer (resp output buffer) is ns * (<X> == 'Mono' ? 1:2) * (<N> == 8 ? 1:2)
291 */
292
293 static void cvtMM88K(const unsigned char* src, int ns, unsigned char* dst)
294 {
295 TRACE("(%p, %d, %p)\n", src, ns, dst);
296 memcpy(dst, src, ns);
297 }
298
299 static void cvtSS88K(const unsigned char* src, int ns, unsigned char* dst)
300 {
301 TRACE("(%p, %d, %p)\n", src, ns, dst);
302 memcpy(dst, src, ns * 2);
303 }
304
305 static void cvtMM1616K(const unsigned char* src, int ns, unsigned char* dst)
306 {
307 TRACE("(%p, %d, %p)\n", src, ns, dst);
308 memcpy(dst, src, ns * 2);
309 }
310
311 static void cvtSS1616K(const unsigned char* src, int ns, unsigned char* dst)
312 {
313 TRACE("(%p, %d, %p)\n", src, ns, dst);
314 memcpy(dst, src, ns * 4);
315 }
316
317 static void cvtMS88K(const unsigned char* src, int ns, unsigned char* dst)
318 {
319 TRACE("(%p, %d, %p)\n", src, ns, dst);
320
321 while (ns--) {
322 *dst++ = *src;
323 *dst++ = *src++;
324 }
325 }
326
327 static void cvtMS816K(const unsigned char* src, int ns, unsigned char* dst)
328 {
329 short v;
330 TRACE("(%p, %d, %p)\n", src, ns, dst);
331
332 while (ns--) {
333 v = C816(*src++);
334 W16(dst, v); dst += 2;
335 W16(dst, v); dst += 2;
336 }
337 }
338
339 static void cvtMS168K(const unsigned char* src, int ns, unsigned char* dst)
340 {
341 unsigned char v;
342 TRACE("(%p, %d, %p)\n", src, ns, dst);
343
344 while (ns--) {
345 v = C168(R16(src)); src += 2;
346 *dst++ = v;
347 *dst++ = v;
348 }
349 }
350
351 static void cvtMS1616K(const unsigned char* src, int ns, unsigned char* dst)
352 {
353 short v;
354 TRACE("(%p, %d, %p)\n", src, ns, dst);
355
356 while (ns--) {
357 v = R16(src); src += 2;
358 W16(dst, v); dst += 2;
359 W16(dst, v); dst += 2;
360 }
361 }
362
363 static void cvtSM88K(const unsigned char* src, int ns, unsigned char* dst)
364 {
365 TRACE("(%p, %d, %p)\n", src, ns, dst);
366
367 while (ns--) {
368 *dst++ = M8(src[0], src[1]);
369 src += 2;
370 }
371 }
372
373 static void cvtSM816K(const unsigned char* src, int ns, unsigned char* dst)
374 {
375 short v;
376 TRACE("(%p, %d, %p)\n", src, ns, dst);
377
378 while (ns--) {
379 v = M16(C816(src[0]), C816(src[1]));
380 src += 2;
381 W16(dst, v); dst += 2;
382 }
383 }
384
385 static void cvtSM168K(const unsigned char* src, int ns, unsigned char* dst)
386 {
387 TRACE("(%p, %d, %p)\n", src, ns, dst);
388
389 while (ns--) {
390 *dst++ = C168(M16(R16(src), R16(src + 2)));
391 src += 4;
392 }
393 }
394
395 static void cvtSM1616K(const unsigned char* src, int ns, unsigned char* dst)
396 {
397 TRACE("(%p, %d, %p)\n", src, ns, dst);
398
399 while (ns--) {
400 W16(dst, M16(R16(src),R16(src+2))); dst += 2;
401 src += 4;
402 }
403 }
404
405 static void cvtMM816K(const unsigned char* src, int ns, unsigned char* dst)
406 {
407 TRACE("(%p, %d, %p)\n", src, ns, dst);
408
409 while (ns--) {
410 W16(dst, C816(*src++)); dst += 2;
411 }
412 }
413
414 static void cvtSS816K(const unsigned char* src, int ns, unsigned char* dst)
415 {
416 TRACE("(%p, %d, %p)\n", src, ns, dst);
417
418 while (ns--) {
419 W16(dst, C816(*src++)); dst += 2;
420 W16(dst, C816(*src++)); dst += 2;
421 }
422 }
423
424 static void cvtMM168K(const unsigned char* src, int ns, unsigned char* dst)
425 {
426 TRACE("(%p, %d, %p)\n", src, ns, dst);
427
428 while (ns--) {
429 *dst++ = C168(R16(src)); src += 2;
430 }
431 }
432
433 static void cvtSS168K(const unsigned char* src, int ns, unsigned char* dst)
434 {
435 TRACE("(%p, %d, %p)\n", src, ns, dst);
436
437 while (ns--) {
438 *dst++ = C168(R16(src)); src += 2;
439 *dst++ = C168(R16(src)); src += 2;
440 }
441 }
442
443 static void cvtMS248K(const unsigned char* src, int ns, unsigned char* dst)
444 {
445 unsigned char v;
446 TRACE("(%p, %d, %p)\n", src, ns, dst);
447
448 while (ns--) {
449 v = C248(R24(src)); src += 3;
450 *dst++ = v;
451 *dst++ = v;
452 }
453 }
454
455 static void cvtSM248K(const unsigned char* src, int ns, unsigned char* dst)
456 {
457 TRACE("(%p, %d, %p)\n", src, ns, dst);
458
459 while (ns--) {
460 *dst++ = C248(M24(R24(src), R24(src + 3)));
461 src += 6;
462 }
463 }
464
465 static void cvtMM248K(const unsigned char* src, int ns, unsigned char* dst)
466 {
467 TRACE("(%p, %d, %p)\n", src, ns, dst);
468
469 while (ns--) {
470 *dst++ = C248(R24(src)); src += 3;
471 }
472 }
473
474 static void cvtSS248K(const unsigned char* src, int ns, unsigned char* dst)
475 {
476 TRACE("(%p, %d, %p)\n", src, ns, dst);
477
478 while (ns--) {
479 *dst++ = C248(R24(src)); src += 3;
480 *dst++ = C248(R24(src)); src += 3;
481 }
482 }
483
484 static void cvtMS2416K(const unsigned char* src, int ns, unsigned char* dst)
485 {
486 short v;
487 TRACE("(%p, %d, %p)\n", src, ns, dst);
488
489 while (ns--) {
490 v = C2416(R24(src)); src += 3;
491 W16(dst, v); dst += 2;
492 W16(dst, v); dst += 2;
493 }
494 }
495
496 static void cvtSM2416K(const unsigned char* src, int ns, unsigned char* dst)
497 {
498 TRACE("(%p, %d, %p)\n", src, ns, dst);
499
500 while (ns--) {
501 W16(dst, C2416(M24(R24(src), R24(src + 3))));
502 dst += 2;
503 src += 6;
504 }
505 }
506
507 static void cvtMM2416K(const unsigned char* src, int ns, unsigned char* dst)
508 {
509 TRACE("(%p, %d, %p)\n", src, ns, dst);
510
511 while (ns--) {
512 W16(dst, C2416(R24(src))); dst += 2; src += 3;
513 }
514 }
515
516 static void cvtSS2416K(const unsigned char* src, int ns, unsigned char* dst)
517 {
518 TRACE("(%p, %d, %p)\n", src, ns, dst);
519
520 while (ns--) {
521 W16(dst, C2416(R24(src))); dst += 2; src += 3;
522 W16(dst, C2416(R24(src))); dst += 2; src += 3;
523 }
524 }
525
526
527 static const PCM_CONVERT_KEEP_RATE PCM_ConvertKeepRate[] = {
528 cvtSS88K, cvtSM88K, cvtMS88K, cvtMM88K,
529 cvtSS816K, cvtSM816K, cvtMS816K, cvtMM816K,
530 NULL, NULL, NULL, NULL, /* TODO: 8->24 */
531 cvtSS168K, cvtSM168K, cvtMS168K, cvtMM168K,
532 cvtSS1616K, cvtSM1616K, cvtMS1616K, cvtMM1616K,
533 NULL, NULL, NULL, NULL, /* TODO: 16->24 */
534 cvtSS248K, cvtSM248K, cvtMS248K, cvtMM248K,
535 cvtSS2416K, cvtSM2416K, cvtMS2416K, cvtMM2416K,
536 NULL, NULL, NULL, NULL, /* TODO: 24->24 */
537 };
538
539 /* the conversion routines with rate conversion are labelled cvt<X><Y><N><M>C
540 * where :
541 * <X> is the (M)ono/(S)tereo configuration of input channel
542 * <Y> is the (M)ono/(S)tereo configuration of output channel
543 * <N> is the number of bits of input channel (8 or 16)
544 * <M> is the number of bits of output channel (8 or 16)
545 *
546 */
547
548 static void cvtSS88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
549 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
550 {
551 DWORD error = srcRate / 2;
552 DWORD maxSrc = *nsrc, maxDst = *ndst;
553 *ndst = 0;
554 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
555 error += dstRate;
556 while (error > srcRate) {
557 if (*ndst == maxDst)
558 return;
559 (*ndst)++;
560 error -= srcRate;
561
562 *dst++ = src[0];
563 *dst++ = src[1];
564 }
565 src += 2;
566 }
567 }
568
569 static void cvtSM88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
570 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
571 {
572 DWORD error = srcRate / 2;
573 DWORD maxSrc = *nsrc, maxDst = *ndst;
574 *ndst = 0;
575 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
576 error += dstRate;
577 while (error > srcRate) {
578 if (*ndst == maxDst)
579 return;
580 (*ndst)++;
581 error -= srcRate;
582
583 *dst++ = M8(src[0], src[1]);
584 }
585 src += 2;
586 }
587 }
588
589 static void cvtMS88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
590 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
591 {
592 DWORD error = srcRate / 2;
593 DWORD maxSrc = *nsrc, maxDst = *ndst;
594 *ndst = 0;
595 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
596 error += dstRate;
597 while (error > srcRate) {
598 if (*ndst == maxDst)
599 return;
600 (*ndst)++;
601 error -= srcRate;
602
603 *dst++ = src[0];
604 *dst++ = src[0];
605 }
606 src += 1;
607 }
608 }
609
610 static void cvtMM88C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
611 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
612 {
613 DWORD error = srcRate / 2;
614 DWORD maxSrc = *nsrc, maxDst = *ndst;
615 *ndst = 0;
616 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
617 error += dstRate;
618 while (error > srcRate) {
619 if (*ndst == maxDst)
620 return;
621 (*ndst)++;
622 error -= srcRate;
623
624 *dst++ = src[0];
625 }
626 src += 1;
627 }
628 }
629
630 static void cvtSS816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
631 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
632 {
633 DWORD error = srcRate / 2;
634 DWORD maxSrc = *nsrc, maxDst = *ndst;
635 *ndst = 0;
636 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
637 error += dstRate;
638 while (error > srcRate) {
639 if (*ndst == maxDst)
640 return;
641 (*ndst)++;
642 error -= srcRate;
643
644 W16(dst, C816(src[0])); dst += 2;
645 W16(dst, C816(src[1])); dst += 2;
646 }
647 src += 2;
648 }
649 }
650
651 static void cvtSM816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
652 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
653 {
654 DWORD error = srcRate / 2;
655 DWORD maxSrc = *nsrc, maxDst = *ndst;
656 *ndst = 0;
657 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
658 error += dstRate;
659 while (error > srcRate) {
660 if (*ndst == maxDst)
661 return;
662 (*ndst)++;
663 error -= srcRate;
664
665 W16(dst, M16(C816(src[0]), C816(src[1]))); dst += 2;
666 }
667 src += 2;
668 }
669 }
670
671 static void cvtMS816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
672 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
673 {
674 DWORD error = srcRate / 2;
675 DWORD maxSrc = *nsrc, maxDst = *ndst;
676 *ndst = 0;
677 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
678 error += dstRate;
679 while (error > srcRate) {
680 if (*ndst == maxDst)
681 return;
682 (*ndst)++;
683 error -= srcRate;
684
685 W16(dst, C816(src[0])); dst += 2;
686 W16(dst, C816(src[0])); dst += 2;
687 }
688 src += 1;
689 }
690 }
691
692 static void cvtMM816C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
693 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
694 {
695 DWORD error = srcRate / 2;
696 DWORD maxSrc = *nsrc, maxDst = *ndst;
697 *ndst = 0;
698 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
699 error += dstRate;
700 while (error > srcRate) {
701 if (*ndst == maxDst)
702 return;
703 (*ndst)++;
704 error -= srcRate;
705
706 W16(dst, C816(src[0])); dst += 2;
707 }
708 src += 1;
709 }
710 }
711
712 static void cvtSS168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
713 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
714 {
715 DWORD error = srcRate / 2;
716 DWORD maxSrc = *nsrc, maxDst = *ndst;
717 *ndst = 0;
718 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
719 error += dstRate;
720 while (error > srcRate) {
721 if (*ndst == maxDst)
722 return;
723 (*ndst)++;
724 error -= srcRate;
725
726 *dst++ = C168(R16(src));
727 *dst++ = C168(R16(src + 2));
728 }
729 src += 4;
730 }
731 }
732
733 static void cvtSM168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
734 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
735 {
736 DWORD error = srcRate / 2;
737 DWORD maxSrc = *nsrc, maxDst = *ndst;
738 *ndst = 0;
739 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
740 error += dstRate;
741 while (error > srcRate) {
742 if (*ndst == maxDst)
743 return;
744 (*ndst)++;
745 error -= srcRate;
746
747 *dst++ = C168(M16(R16(src), R16(src + 2)));
748 }
749 src += 4;
750 }
751 }
752
753 static void cvtMS168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
754 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
755 {
756 DWORD error = srcRate / 2;
757 DWORD maxSrc = *nsrc, maxDst = *ndst;
758 *ndst = 0;
759 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
760 error += dstRate;
761 while (error > srcRate) {
762 if (*ndst == maxDst)
763 return;
764 (*ndst)++;
765 error -= srcRate;
766
767 *dst++ = C168(R16(src));
768 *dst++ = C168(R16(src));
769 }
770 src += 2;
771 }
772 }
773
774 static void cvtMM168C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
775 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
776 {
777 DWORD error = srcRate / 2;
778 DWORD maxSrc = *nsrc, maxDst = *ndst;
779 *ndst = 0;
780 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
781 error += dstRate;
782 while (error > srcRate) {
783 if (*ndst == maxDst)
784 return;
785 (*ndst)++;
786 error -= srcRate;
787
788 *dst++ = C168(R16(src));
789 }
790 src += 2;
791 }
792 }
793
794 static void cvtSS1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
795 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
796 {
797 DWORD error = srcRate / 2;
798 DWORD maxSrc = *nsrc, maxDst = *ndst;
799 *ndst = 0;
800 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
801 error += dstRate;
802 while (error > srcRate) {
803 if (*ndst == maxDst)
804 return;
805 (*ndst)++;
806 error -= srcRate;
807
808 W16(dst, R16(src)); dst += 2;
809 W16(dst, R16(src + 2)); dst += 2;
810 }
811 src += 4;
812 }
813 }
814
815 static void cvtSM1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
816 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
817 {
818 DWORD error = srcRate / 2;
819 DWORD maxSrc = *nsrc, maxDst = *ndst;
820 *ndst = 0;
821 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
822 error += dstRate;
823 while (error > srcRate) {
824 if (*ndst == maxDst)
825 return;
826 (*ndst)++;
827 error -= srcRate;
828
829 W16(dst, M16(R16(src), R16(src + 2))); dst += 2;
830 }
831 src += 4;
832 }
833 }
834
835 static void cvtMS1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
836 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
837 {
838 DWORD error = srcRate / 2;
839 DWORD maxSrc = *nsrc, maxDst = *ndst;
840 *ndst = 0;
841 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
842 error += dstRate;
843 while (error > srcRate) {
844 if (*ndst == maxDst)
845 return;
846 (*ndst)++;
847 error -= srcRate;
848
849 W16(dst, R16(src)); dst += 2;
850 W16(dst, R16(src)); dst += 2;
851 }
852 src += 2;
853 }
854 }
855
856 static void cvtMM1616C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
857 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
858 {
859 DWORD error = srcRate / 2;
860 DWORD maxSrc = *nsrc, maxDst = *ndst;
861 *ndst = 0;
862 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
863 error += dstRate;
864 while (error > srcRate) {
865 if (*ndst == maxDst)
866 return;
867 (*ndst)++;
868 error -= srcRate;
869
870 W16(dst, R16(src)); dst += 2;
871 }
872 src += 2;
873 }
874 }
875
876 static void cvtSS2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
877 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
878 {
879 DWORD error = srcRate / 2;
880 DWORD maxSrc = *nsrc, maxDst = *ndst;
881 *ndst = 0;
882 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
883 error += dstRate;
884 while (error > srcRate) {
885 if (*ndst == maxDst)
886 return;
887 (*ndst)++;
888 error -= srcRate;
889
890 W24(dst, R24(src)); dst += 3;
891 W24(dst, R24(src + 3)); dst += 3;
892 }
893 src += 6;
894 }
895 }
896
897 static void cvtSM2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
898 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
899 {
900 DWORD error = srcRate / 2;
901 DWORD maxSrc = *nsrc, maxDst = *ndst;
902 *ndst = 0;
903 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
904 error += dstRate;
905 while (error > srcRate) {
906 if (*ndst == maxDst)
907 return;
908 (*ndst)++;
909 error -= srcRate;
910
911 W24(dst, M24(R24(src), R24(src + 3))); dst += 3;
912 }
913 src += 6;
914 }
915 }
916
917 static void cvtMS2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
918 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
919 {
920 DWORD error = srcRate / 2;
921 DWORD maxSrc = *nsrc, maxDst = *ndst;
922 *ndst = 0;
923 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
924 error += dstRate;
925 while (error > srcRate) {
926 if (*ndst == maxDst)
927 return;
928 (*ndst)++;
929 error -= srcRate;
930
931 W24(dst, R24(src)); dst += 3;
932 W24(dst, R24(src)); dst += 3;
933 }
934 src += 3;
935 }
936 }
937
938 static void cvtMM2424C(const DWORD srcRate, const unsigned char *src, DWORD *nsrc,
939 const DWORD dstRate, unsigned char *dst, DWORD *ndst)
940 {
941 DWORD error = srcRate / 2;
942 DWORD maxSrc = *nsrc, maxDst = *ndst;
943 *ndst = 0;
944 for (*nsrc = 0; *nsrc < maxSrc; (*nsrc)++) {
945 error += dstRate;
946 while (error > srcRate) {
947 if (*ndst == maxDst)
948 return;
949 (*ndst)++;
950 error -= srcRate;
951
952 W24(dst, R24(src)); dst += 3;
953 }
954 src += 3;
955 }
956 }
957
958 static const PCM_CONVERT_CHANGE_RATE PCM_ConvertChangeRate[] = {
959 cvtSS88C, cvtSM88C, cvtMS88C, cvtMM88C,
960 cvtSS816C, cvtSM816C, cvtMS816C, cvtMM816C,
961 NULL, NULL, NULL, NULL, /* TODO: 8->24 */
962 cvtSS168C, cvtSM168C, cvtMS168C, cvtMM168C,
963 cvtSS1616C, cvtSM1616C, cvtMS1616C, cvtMM1616C,
964 NULL, NULL, NULL, NULL, /* TODO: 16->24 */
965 NULL, NULL, NULL, NULL, /* TODO: 24->8 */
966 NULL, NULL, NULL, NULL, /* TODO: 24->16 */
967 cvtSS2424C, cvtSM2424C, cvtMS2424C, cvtMM2424C,
968 };
969
970 /***********************************************************************
971 * PCM_DriverDetails
972 *
973 */
974 static LRESULT PCM_DriverDetails(PACMDRIVERDETAILSW add)
975 {
976 TRACE("(%p)\n", add);
977
978 add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
979 add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
980 add->wMid = MM_MICROSOFT;
981 add->wPid = MM_MSFT_ACM_PCM;
982 add->vdwACM = 0x01000000;
983 add->vdwDriver = 0x01000000;
984 add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
985 add->cFormatTags = 1;
986 add->cFilterTags = 0;
987 add->hicon = NULL;
988 MultiByteToWideChar( CP_ACP, 0, "MS-PCM", -1,
989 add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
990 MultiByteToWideChar( CP_ACP, 0, "Wine PCM converter", -1,
991 add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
992 MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
993 add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
994 MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
995 add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
996 add->szFeatures[0] = 0;
997
998 return MMSYSERR_NOERROR;
999 }
1000
1001 /***********************************************************************
1002 * PCM_FormatTagDetails
1003 *
1004 */
1005 static LRESULT PCM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
1006 {
1007 TRACE("(%p, %08x)\n", aftd, dwQuery);
1008
1009 switch (dwQuery) {
1010 case ACM_FORMATTAGDETAILSF_INDEX:
1011 if (aftd->dwFormatTagIndex != 0) {
1012 WARN("not possible\n");
1013 return ACMERR_NOTPOSSIBLE;
1014 }
1015 break;
1016 case ACM_FORMATTAGDETAILSF_FORMATTAG:
1017 if (aftd->dwFormatTag != WAVE_FORMAT_PCM) {
1018 WARN("not possible\n");
1019 return ACMERR_NOTPOSSIBLE;
1020 }
1021 break;
1022 case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
1023 if (aftd->dwFormatTag != WAVE_FORMAT_UNKNOWN &&
1024 aftd->dwFormatTag != WAVE_FORMAT_PCM) {
1025 WARN("not possible\n");
1026 return ACMERR_NOTPOSSIBLE;
1027 }
1028 break;
1029 default:
1030 WARN("Unsupported query %08x\n", dwQuery);
1031 return MMSYSERR_NOTSUPPORTED;
1032 }
1033
1034 aftd->dwFormatTagIndex = 0;
1035 aftd->dwFormatTag = WAVE_FORMAT_PCM;
1036 aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
1037 aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
1038 aftd->cStandardFormats = NUM_PCM_FORMATS;
1039 aftd->szFormatTag[0] = 0;
1040
1041 return MMSYSERR_NOERROR;
1042 }
1043
1044 /***********************************************************************
1045 * PCM_FormatDetails
1046 *
1047 */
1048 static LRESULT PCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
1049 {
1050 TRACE("(%p, %08x)\n", afd, dwQuery);
1051
1052 switch (dwQuery) {
1053 case ACM_FORMATDETAILSF_FORMAT:
1054 if (PCM_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) {
1055 WARN("not possible\n");
1056 return ACMERR_NOTPOSSIBLE;
1057 }
1058 break;
1059 case ACM_FORMATDETAILSF_INDEX:
1060 assert(afd->dwFormatIndex < NUM_PCM_FORMATS);
1061 afd->pwfx->wFormatTag = WAVE_FORMAT_PCM;
1062 afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
1063 afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
1064 afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
1065 /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not
1066 * accessible afd->pwfx->cbSize = 0;
1067 */
1068 afd->pwfx->nBlockAlign =
1069 (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
1070 afd->pwfx->nAvgBytesPerSec =
1071 afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
1072 break;
1073 default:
1074 WARN("Unsupported query %08x\n", dwQuery);
1075 return MMSYSERR_NOTSUPPORTED;
1076 }
1077
1078 afd->dwFormatTag = WAVE_FORMAT_PCM;
1079 afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
1080 afd->szFormat[0] = 0; /* let MSACM format this for us... */
1081 afd->cbwfx = sizeof(PCMWAVEFORMAT);
1082
1083 return MMSYSERR_NOERROR;
1084 }
1085
1086 /***********************************************************************
1087 * PCM_FormatSuggest
1088 *
1089 */
1090 static LRESULT PCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
1091 {
1092 TRACE("(%p)\n", adfs);
1093
1094 /* some tests ... */
1095 if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
1096 adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
1097 PCM_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) {
1098 WARN("not possible\n");
1099 return ACMERR_NOTPOSSIBLE;
1100 }
1101
1102 /* is no suggestion for destination, then copy source value */
1103 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS)) {
1104 adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
1105 }
1106 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC)) {
1107 adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
1108 }
1109 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE)) {
1110 adfs->pwfxDst->wBitsPerSample = adfs->pwfxSrc->wBitsPerSample;
1111 }
1112 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG)) {
1113 if (adfs->pwfxSrc->wFormatTag != WAVE_FORMAT_PCM) {
1114 WARN("source format 0x%x not supported\n", adfs->pwfxSrc->wFormatTag);
1115 return ACMERR_NOTPOSSIBLE;
1116 }
1117 adfs->pwfxDst->wFormatTag = adfs->pwfxSrc->wFormatTag;
1118 } else {
1119 if (adfs->pwfxDst->wFormatTag != WAVE_FORMAT_PCM) {
1120 WARN("destination format 0x%x not supported\n", adfs->pwfxDst->wFormatTag);
1121 return ACMERR_NOTPOSSIBLE;
1122 }
1123 }
1124 /* check if result is ok */
1125 if (PCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) {
1126 WARN("not possible\n");
1127 return ACMERR_NOTPOSSIBLE;
1128 }
1129
1130 /* recompute other values */
1131 adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
1132 adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
1133
1134 return MMSYSERR_NOERROR;
1135 }
1136
1137 /***********************************************************************
1138 * PCM_StreamOpen
1139 *
1140 */
1141 static LRESULT PCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
1142 {
1143 AcmPcmData* apd;
1144 int idx;
1145 DWORD flags;
1146
1147 TRACE("(%p)\n", adsi);
1148
1149 assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
1150
1151 switch(adsi->pwfxSrc->wBitsPerSample){
1152 case 8:
1153 idx = 0;
1154 break;
1155 case 16:
1156 idx = 12;
1157 break;
1158 case 24:
1159 if (adsi->pwfxSrc->nBlockAlign != 3 * adsi->pwfxSrc->nChannels) {
1160 FIXME("Source: 24-bit samples must be packed\n");
1161 return MMSYSERR_NOTSUPPORTED;
1162 }
1163 idx = 24;
1164 break;
1165 default:
1166 FIXME("Unsupported source bit depth: %u\n", adsi->pwfxSrc->wBitsPerSample);
1167 return MMSYSERR_NOTSUPPORTED;
1168 }
1169
1170 switch(adsi->pwfxDst->wBitsPerSample){
1171 case 8:
1172 break;
1173 case 16:
1174 idx += 4;
1175 break;
1176 case 24:
1177 if (adsi->pwfxDst->nBlockAlign != 3 * adsi->pwfxDst->nChannels) {
1178 FIXME("Destination: 24-bit samples must be packed\n");
1179 return MMSYSERR_NOTSUPPORTED;
1180 }
1181 idx += 8;
1182 break;
1183 default:
1184 FIXME("Unsupported destination bit depth: %u\n", adsi->pwfxDst->wBitsPerSample);
1185 return MMSYSERR_NOTSUPPORTED;
1186 }
1187
1188 if (adsi->pwfxSrc->nChannels == 1) idx += 2;
1189
1190 if (adsi->pwfxDst->nChannels == 1) idx += 1;
1191
1192 apd = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmPcmData));
1193 if (!apd)
1194 return MMSYSERR_NOMEM;
1195
1196 if (adsi->pwfxSrc->nSamplesPerSec == adsi->pwfxDst->nSamplesPerSec) {
1197 flags = 0;
1198 apd->cvt.cvtKeepRate = PCM_ConvertKeepRate[idx];
1199 } else {
1200 flags = PCM_RESAMPLE;
1201 apd->cvt.cvtChangeRate = PCM_ConvertChangeRate[idx];
1202 }
1203
1204 if(!apd->cvt.cvtChangeRate && !apd->cvt.cvtKeepRate){
1205 FIXME("Unimplemented conversion from %u -> %u bps\n",
1206 adsi->pwfxSrc->wBitsPerSample,
1207 adsi->pwfxDst->wBitsPerSample);
1208 HeapFree(GetProcessHeap(), 0, apd);
1209 return MMSYSERR_NOTSUPPORTED;
1210 }
1211
1212 adsi->dwDriver = (DWORD_PTR)apd;
1213 adsi->fdwDriver = flags;
1214
1215 return MMSYSERR_NOERROR;
1216 }
1217
1218 /***********************************************************************
1219 * PCM_StreamClose
1220 *
1221 */
1222 static LRESULT PCM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
1223 {
1224 TRACE("(%p)\n", adsi);
1225
1226 HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
1227 return MMSYSERR_NOERROR;
1228 }
1229
1230 /***********************************************************************
1231 * PCM_round
1232 *
1233 */
1234 static inline DWORD PCM_round(DWORD a, DWORD b, DWORD c)
1235 {
1236 assert(c);
1237 /* to be sure, always return an entire number of c... */
1238 return ((double)a * (double)b + (double)c - 1) / (double)c;
1239 }
1240
1241 /***********************************************************************
1242 * PCM_StreamSize
1243 *
1244 */
1245 static LRESULT PCM_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
1246 {
1247 DWORD srcMask = ~(adsi->pwfxSrc->nBlockAlign - 1);
1248 DWORD dstMask = ~(adsi->pwfxDst->nBlockAlign - 1);
1249
1250 TRACE("(%p, %p)\n", adsi, adss);
1251
1252 switch (adss->fdwSize) {
1253 case ACM_STREAMSIZEF_DESTINATION:
1254 /* cbDstLength => cbSrcLength */
1255 adss->cbSrcLength = PCM_round(adss->cbDstLength & dstMask,
1256 adsi->pwfxSrc->nAvgBytesPerSec,
1257 adsi->pwfxDst->nAvgBytesPerSec) & srcMask;
1258 break;
1259 case ACM_STREAMSIZEF_SOURCE:
1260 /* cbSrcLength => cbDstLength */
1261 adss->cbDstLength = PCM_round(adss->cbSrcLength & srcMask,
1262 adsi->pwfxDst->nAvgBytesPerSec,
1263 adsi->pwfxSrc->nAvgBytesPerSec) & dstMask;
1264 break;
1265 default:
1266 WARN("Unsupported query %08x\n", adss->fdwSize);
1267 return MMSYSERR_NOTSUPPORTED;
1268 }
1269 return MMSYSERR_NOERROR;
1270 }
1271
1272 /***********************************************************************
1273 * PCM_StreamConvert
1274 *
1275 */
1276 static LRESULT PCM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
1277 {
1278 AcmPcmData* apd = (AcmPcmData*)adsi->dwDriver;
1279 DWORD nsrc = NUM_OF(adsh->cbSrcLength, adsi->pwfxSrc->nBlockAlign);
1280 DWORD ndst = NUM_OF(adsh->cbDstLength, adsi->pwfxDst->nBlockAlign);
1281
1282 TRACE("(%p, %p)\n", adsi, adsh);
1283
1284 TRACE("nsrc=%d,adsh->cbSrcLength=%d\n", nsrc, adsh->cbSrcLength);
1285 TRACE("ndst=%d,adsh->cbDstLength=%d\n", ndst, adsh->cbDstLength);
1286 TRACE("src [wFormatTag=%u, nChannels=%u, nSamplesPerSec=%u, nAvgBytesPerSec=%u, nBlockAlign=%u, wBitsPerSample=%u, cbSize=%u]\n",
1287 adsi->pwfxSrc->wFormatTag, adsi->pwfxSrc->nChannels, adsi->pwfxSrc->nSamplesPerSec, adsi->pwfxSrc->nAvgBytesPerSec,
1288 adsi->pwfxSrc->nBlockAlign, adsi->pwfxSrc->wBitsPerSample, adsi->pwfxSrc->cbSize);
1289 TRACE("dst [wFormatTag=%u, nChannels=%u, nSamplesPerSec=%u, nAvgBytesPerSec=%u, nBlockAlign=%u, wBitsPerSample=%u, cbSize=%u]\n",
1290 adsi->pwfxDst->wFormatTag, adsi->pwfxDst->nChannels, adsi->pwfxDst->nSamplesPerSec, adsi->pwfxDst->nAvgBytesPerSec,
1291 adsi->pwfxDst->nBlockAlign, adsi->pwfxDst->wBitsPerSample, adsi->pwfxDst->cbSize);
1292
1293 if (adsh->fdwConvert &
1294 ~(ACM_STREAMCONVERTF_BLOCKALIGN|
1295 ACM_STREAMCONVERTF_END|
1296 ACM_STREAMCONVERTF_START)) {
1297 FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert);
1298 }
1299 /* ACM_STREAMCONVERTF_BLOCKALIGN
1300 * currently all conversions are block aligned, so do nothing for this flag
1301 * ACM_STREAMCONVERTF_END
1302 * no pending data, so do nothing for this flag
1303 */
1304 if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START) &&
1305 (adsi->fdwDriver & PCM_RESAMPLE)) {
1306 }
1307
1308 /* do the job */
1309 if (adsi->fdwDriver & PCM_RESAMPLE) {
1310 apd->cvt.cvtChangeRate(adsi->pwfxSrc->nSamplesPerSec, adsh->pbSrc, &nsrc,
1311 adsi->pwfxDst->nSamplesPerSec, adsh->pbDst, &ndst);
1312 } else {
1313 if (nsrc < ndst) ndst = nsrc; else nsrc = ndst;
1314
1315 /* nsrc is now equal to ndst */
1316 apd->cvt.cvtKeepRate(adsh->pbSrc, nsrc, adsh->pbDst);
1317 }
1318
1319 adsh->cbSrcLengthUsed = nsrc * adsi->pwfxSrc->nBlockAlign;
1320 adsh->cbDstLengthUsed = ndst * adsi->pwfxDst->nBlockAlign;
1321
1322 return MMSYSERR_NOERROR;
1323 }
1324
1325 /**************************************************************************
1326 * DriverProc (MSACM32.@)
1327 */
1328 LRESULT CALLBACK PCM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
1329 LPARAM dwParam1, LPARAM dwParam2)
1330 {
1331 TRACE("(%08lx %p %u %08lx %08lx);\n",
1332 dwDevID, hDriv, wMsg, dwParam1, dwParam2);
1333
1334 switch (wMsg) {
1335 case DRV_LOAD: return 1;
1336 case DRV_FREE: return 1;
1337 case DRV_OPEN: return PCM_drvOpen((LPSTR)dwParam1, (PACMDRVOPENDESCW)dwParam2);
1338 case DRV_CLOSE: return PCM_drvClose(dwDevID);
1339 case DRV_ENABLE: return 1;
1340 case DRV_DISABLE: return 1;
1341 case DRV_QUERYCONFIGURE: return 1;
1342 case DRV_CONFIGURE: MessageBoxA(0, "MSACM PCM filter !", "Wine Driver", MB_OK); return 1;
1343 case DRV_INSTALL: return DRVCNF_RESTART;
1344 case DRV_REMOVE: return DRVCNF_RESTART;
1345
1346 case ACMDM_DRIVER_NOTIFY:
1347 /* no caching from other ACM drivers is done so far */
1348 return MMSYSERR_NOERROR;
1349
1350 case ACMDM_DRIVER_DETAILS:
1351 return PCM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
1352
1353 case ACMDM_FORMATTAG_DETAILS:
1354 return PCM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
1355
1356 case ACMDM_FORMAT_DETAILS:
1357 return PCM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
1358
1359 case ACMDM_FORMAT_SUGGEST:
1360 return PCM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
1361
1362 case ACMDM_STREAM_OPEN:
1363 return PCM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
1364
1365 case ACMDM_STREAM_CLOSE:
1366 return PCM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
1367
1368 case ACMDM_STREAM_SIZE:
1369 return PCM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
1370
1371 case ACMDM_STREAM_CONVERT:
1372 return PCM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
1373
1374 case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
1375 case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
1376 /* this converter is not a hardware driver */
1377 case ACMDM_FILTERTAG_DETAILS:
1378 case ACMDM_FILTER_DETAILS:
1379 /* this converter is not a filter */
1380 case ACMDM_STREAM_RESET:
1381 /* only needed for asynchronous driver... we aren't, so just say it */
1382 case ACMDM_STREAM_PREPARE:
1383 case ACMDM_STREAM_UNPREPARE:
1384 /* nothing special to do here... so don't do anything */
1385 return MMSYSERR_NOTSUPPORTED;
1386
1387 default:
1388 return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
1389 }
1390 }
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