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_open_osfhandle is expected to take the absence of either _O_TEXT or
[wine/gsoc_dplay.git] / dlls / msacm / pcmconverter.c
bloba5b46d00c32d597f9d8c4f0a8d49d6511f25d1b3
1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
2
3 /*
4 * MSACM32 library
5 *
6 * Copyright 2000 Eric Pouech
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with this library; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * FIXME / TODO list
23 * + most of the computation should be done in fixed point arithmetic
24 * instead of floating point (16 bits for integral part, and 16 bits
25 * for fractional part for example)
26 * + implement PCM_FormatSuggest function
27 * + get rid of hack for PCM_DriverProc (msacm32.dll shouldn't export
28 * a DriverProc, but this would require implementing a generic
29 * embedded driver handling scheme in msacm32.dll which isn't done yet
30 */
31
32 #include "config.h"
33
34 #include <assert.h>
35 #include <string.h>
36
37 #include "msacm.h"
38 #include "winbase.h"
39 #include "wingdi.h"
40 #include "winnls.h"
41 #include "winuser.h"
42
43 #include "msacmdrv.h"
44 #include "wineacm.h"
45
46 #include "wine/debug.h"
47
48 WINE_DEFAULT_DEBUG_CHANNEL(msacm);
49
50 /***********************************************************************
51 * PCM_drvOpen
52 */
53 static DWORD PCM_drvOpen(LPCSTR str, PACMDRVOPENDESCW adod)
54 {
55 return (adod == NULL) ||
56 (adod->fccType == ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC &&
57 adod->fccComp == ACMDRIVERDETAILS_FCCCOMP_UNDEFINED);
58 }
59
60 /***********************************************************************
61 * PCM_drvClose
62 */
63 static DWORD PCM_drvClose(DWORD dwDevID)
64 {
65 return 1;
66 }
67
68 #define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
69 #define NUM_OF(a,b) (((a)+(b)-1)/(b))
70
71 /* flags for fdwDriver */
72 #define PCM_RESAMPLE 1
73
74 /* data used while converting */
75 typedef struct tagAcmPcmData {
76 /* conversion routine, depending if rate conversion is required */
77 union {
78 void (*cvtKeepRate)(const unsigned char*, int, unsigned char*);
79 void (*cvtChangeRate)(struct tagAcmPcmData*, const unsigned char*,
80 LPDWORD, unsigned char*, LPDWORD);
81 } cvt;
82 /* the following fields are used only with rate conversion) */
83 DWORD srcPos; /* position in source stream */
84 double dstPos; /* position in destination stream */
85 double dstIncr; /* value to increment dst stream when src stream
86 is incremented by 1 */
87 /* last source stream value read */
88 union {
89 unsigned char b; /* 8 bit value */
90 short s; /* 16 bit value */
91 } last[2]; /* two channels max (stereo) */
92 } AcmPcmData;
93
94 /* table to list all supported formats... those are the basic ones. this
95 * also helps given a unique index to each of the supported formats
96 */
97 static struct {
98 int nChannels;
99 int nBits;
100 int rate;
101 } PCM_Formats[] = {
102 {1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000},
103 {1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025},
104 {1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050},
105 {1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100},
106 {1, 8, 48000}, {2, 8, 48000}, {1, 16, 48000}, {2, 16, 48000},
107 {1, 8, 96000}, {2, 8, 96000}, {1, 16, 96000}, {2, 16, 96000}
108 };
109
110 /***********************************************************************
111 * PCM_GetFormatIndex
112 */
113 static DWORD PCM_GetFormatIndex(LPWAVEFORMATEX wfx)
114 {
115 int i;
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 average value of samples from Left & Right channels
136 * resampling; we lookup for each destination sample the two source adjacent
137 * samples were src <= dst < src+1 (dst is increased by a fractional
138 * value which is equivalent to the increment by one on src); then we
139 * use a linear interpolation between src and src+1
140 */
141
142 /***********************************************************************
143 * C816
144 *
145 * Converts a 8 bit sample to a 16 bit one
146 */
147 static inline short C816(unsigned char b)
148 {
149 return (short)((b+(b << 8))-32768);
150 }
151
152 /***********************************************************************
153 * C168
154 *
155 * Converts a 16 bit sample to a 8 bit one (data loss !!)
156 */
157 static inline unsigned char C168(short s)
158 {
159 return HIBYTE(s) ^ (unsigned char)0x80;
160 }
161
162 /***********************************************************************
163 * R16
164 *
165 * Read a 16 bit sample (correctly handles endianess)
166 */
167 static inline short R16(const unsigned char* src)
168 {
169 return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
170 }
171
172 /***********************************************************************
173 * W16
174 *
175 * Write a 16 bit sample (correctly handles endianess)
176 */
177 static inline void W16(unsigned char* dst, short s)
178 {
179 dst[0] = LOBYTE(s);
180 dst[1] = HIBYTE(s);
181 }
182
183 /***********************************************************************
184 * M16
185 *
186 * Convert the (l,r) 16 bit stereo sample into a 16 bit mono
187 * (takes the mid-point of the two values)
188 */
189 static inline short M16(short l, short r)
190 {
191 return (l + r) / 2;
192 }
193
194 /***********************************************************************
195 * M8
196 *
197 * Convert the (l,r) 8 bit stereo sample into a 8 bit mono
198 * (takes the mid-point of the two values)
199 */
200 static inline unsigned char M8(unsigned char a, unsigned char b)
201 {
202 return (unsigned char)((a + b) / 2);
203 }
204
205 /* the conversion routines without rate conversion are labelled cvt<X><Y><N><M>K
206 * where :
207 * <X> is the (M)ono/(S)tereo configuration of input channel
208 * <Y> is the (M)ono/(S)tereo configuration of output channel
209 * <N> is the number of bits of input channel (8 or 16)
210 * <M> is the number of bits of output channel (8 or 16)
211 *
212 * in the parameters, ns is always the number of samples, so the size of input
213 * buffer (resp output buffer) is ns * (<X> == 'Mono' ? 1:2) * (<N> == 8 ? 1:2)
214 */
215
216 static void cvtMM88K(const unsigned char* src, int ns, unsigned char* dst)
217 {
218 memcpy(dst, src, ns);
219 }
220
221 static void cvtSS88K(const unsigned char* src, int ns, unsigned char* dst)
222 {
223 memcpy(dst, src, ns * 2);
224 }
225
226 static void cvtMM1616K(const unsigned char* src, int ns, unsigned char* dst)
227 {
228 memcpy(dst, src, ns * 2);
229 }
230
231 static void cvtSS1616K(const unsigned char* src, int ns, unsigned char* dst)
232 {
233 memcpy(dst, src, ns * 4);
234 }
235
236 static void cvtMS88K(const unsigned char* src, int ns, unsigned char* dst)
237 {
238 while (ns--) {
239 *dst++ = *src;
240 *dst++ = *src++;
241 }
242 }
243
244 static void cvtMS816K(const unsigned char* src, int ns, unsigned char* dst)
245 {
246 short v;
247
248 while (ns--) {
249 v = C816(*src++);
250 W16(dst, v); dst += 2;
251 W16(dst, v); dst += 2;
252 }
253 }
254
255 static void cvtMS168K(const unsigned char* src, int ns, unsigned char* dst)
256 {
257 unsigned char v;
258
259 while (ns--) {
260 v = C168(R16(src)); src += 2;
261 *dst++ = v;
262 *dst++ = v;
263 }
264 }
265
266 static void cvtMS1616K(const unsigned char* src, int ns, unsigned char* dst)
267 {
268 short v;
269
270 while (ns--) {
271 v = R16(src); src += 2;
272 W16(dst, v); dst += 2;
273 W16(dst, v); dst += 2;
274 }
275 }
276
277 static void cvtSM88K(const unsigned char* src, int ns, unsigned char* dst)
278 {
279 while (ns--) {
280 *dst++ = M8(src[0], src[1]);
281 src += 2;
282 }
283 }
284
285 static void cvtSM816K(const unsigned char* src, int ns, unsigned char* dst)
286 {
287 short v;
288
289 while (ns--) {
290 v = M16(C816(src[0]), C816(src[1]));
291 src += 2;
292 W16(dst, v); dst += 2;
293 }
294 }
295
296 static void cvtSM168K(const unsigned char* src, int ns, unsigned char* dst)
297 {
298 while (ns--) {
299 *dst++ = C168(M16(R16(src), R16(src + 2)));
300 src += 4;
301 }
302 }
303
304 static void cvtSM1616K(const unsigned char* src, int ns, unsigned char* dst)
305 {
306 while (ns--) {
307 W16(dst, M16(R16(src),R16(src+2))); dst += 2;
308 src += 4;
309 }
310 }
311
312 static void cvtMM816K(const unsigned char* src, int ns, unsigned char* dst)
313 {
314 while (ns--) {
315 W16(dst, C816(*src++)); dst += 2;
316 }
317 }
318
319 static void cvtSS816K(const unsigned char* src, int ns, unsigned char* dst)
320 {
321 while (ns--) {
322 W16(dst, C816(*src++)); dst += 2;
323 W16(dst, C816(*src++)); dst += 2;
324 }
325 }
326
327 static void cvtMM168K(const unsigned char* src, int ns, unsigned char* dst)
328 {
329 while (ns--) {
330 *dst++ = C168(R16(src)); src += 2;
331 }
332 }
333
334 static void cvtSS168K(const unsigned char* src, int ns, unsigned char* dst)
335 {
336 while (ns--) {
337 *dst++ = C168(R16(src)); src += 2;
338 *dst++ = C168(R16(src)); src += 2;
339 }
340 }
341
342 static void (*PCM_ConvertKeepRate[16])(const unsigned char*, int, unsigned char*) = {
343 cvtSS88K, cvtSM88K, cvtMS88K, cvtMM88K,
344 cvtSS816K, cvtSM816K, cvtMS816K, cvtMM816K,
345 cvtSS168K, cvtSM168K, cvtMS168K, cvtMM168K,
346 cvtSS1616K, cvtSM1616K, cvtMS1616K, cvtMM1616K,
347 };
348
349 /***********************************************************************
350 * I
351 *
352 * Interpolate the value at r (r in ]0, 1]) between the two points v1 and v2
353 * Linear interpolation is used
354 */
355 static inline double I(double v1, double v2, double r)
356 {
357 if (0.0 >= r || r > 1.0) FIXME("r!! %f\n", r);
358 return (1.0 - r) * v1 + r * v2;
359 }
360
361 static void cvtSS88C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
362 unsigned char* dst, LPDWORD ndst)
363 {
364 double r;
365
366 while (*nsrc != 0 && *ndst != 0) {
367 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
368 if (*nsrc == 0) return;
369 apd->last[0].b = *src++;
370 apd->last[1].b = *src++;
371 apd->srcPos++;
372 (*nsrc)--;
373 }
374 /* now do the interpolation */
375 *dst++ = I(apd->last[0].b, src[0], r);
376 *dst++ = I(apd->last[1].b, src[1], r);
377 apd->dstPos += apd->dstIncr;
378 (*ndst)--;
379 }
380 }
381
382 /* the conversion routines with rate conversion are labelled cvt<X><Y><N><M>C
383 * where :
384 * <X> is the (M)ono/(S)tereo configuration of input channel
385 * <Y> is the (M)ono/(S)tereo configuration of output channel
386 * <N> is the number of bits of input channel (8 or 16)
387 * <M> is the number of bits of output channel (8 or 16)
388 *
389 */
390 static void cvtSM88C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
391 unsigned char* dst, LPDWORD ndst)
392 {
393 double r;
394
395 while (*nsrc != 0 && *ndst != 0) {
396 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
397 if (*nsrc == 0) return;
398 apd->last[0].b = *src++;
399 apd->last[1].b = *src++;
400 apd->srcPos++;
401 (*nsrc)--;
402 }
403 /* now do the interpolation */
404 *dst++ = I(M8(apd->last[0].b, apd->last[1].b), M8(src[0], src[1]), r);
405 apd->dstPos += apd->dstIncr;
406 (*ndst)--;
407 }
408 }
409
410 static void cvtMS88C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
411 unsigned char* dst, LPDWORD ndst)
412 {
413 double r;
414
415 while (*nsrc != 0 && *ndst != 0) {
416 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
417 if (*nsrc == 0) return;
418 apd->last[0].b = *src++;
419 apd->srcPos++;
420 (*nsrc)--;
421 }
422 /* now do the interpolation */
423 dst[0] = dst[1] = I(apd->last[0].b, src[0], r);
424 dst += 2;
425 apd->dstPos += apd->dstIncr;
426 (*ndst)--;
427 }
428 }
429
430 static void cvtMM88C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
431 unsigned char* dst, LPDWORD ndst)
432 {
433 double r;
434
435 while (*nsrc != 0 && *ndst != 0) {
436 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
437 if (*nsrc == 0) return;
438 apd->last[0].b = *src++;
439 apd->srcPos++;
440 (*nsrc)--;
441 }
442 /* now do the interpolation */
443 *dst++ = I(apd->last[0].b, src[0], r);
444 apd->dstPos += apd->dstIncr;
445 (*ndst)--;
446 }
447 }
448
449 static void cvtSS816C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
450 unsigned char* dst, LPDWORD ndst)
451 {
452 double r;
453
454 while (*nsrc != 0 && *ndst != 0) {
455 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
456 if (*nsrc == 0) return;
457 apd->last[0].b = *src++;
458 apd->last[1].b = *src++;
459 apd->srcPos++;
460 (*nsrc)--;
461 }
462 /* now do the interpolation */
463 W16(dst, I(C816(apd->last[0].b), C816(src[0]), r)); dst += 2;
464 W16(dst, I(C816(apd->last[1].b), C816(src[1]), r)); dst += 2;
465 apd->dstPos += apd->dstIncr;
466 (*ndst)--;
467 }
468 }
469
470 static void cvtSM816C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
471 unsigned char* dst, LPDWORD ndst)
472 {
473 double r;
474
475 while (*nsrc != 0 && *ndst != 0) {
476 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
477 if (*nsrc == 0) return;
478 apd->last[0].b = *src++;
479 apd->last[1].b = *src++;
480 apd->srcPos++;
481 (*nsrc)--;
482 }
483 /* now do the interpolation */
484 W16(dst, I(M16(C816(apd->last[0].b), C816(apd->last[1].b)),
485 M16(C816(src[0]), C816(src[1])), r));
486 dst += 2;
487 apd->dstPos += apd->dstIncr;
488 (*ndst)--;
489 }
490 }
491
492 static void cvtMS816C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
493 unsigned char* dst, LPDWORD ndst)
494 {
495 double r;
496 short v;
497
498 while (*nsrc != 0 && *ndst != 0) {
499 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
500 if (*nsrc == 0) return;
501 apd->last[0].b = *src++;
502 apd->srcPos++;
503 (*nsrc)--;
504 }
505 /* now do the interpolation */
506 v = I(C816(apd->last[0].b), C816(src[0]), r);
507 W16(dst, v); dst += 2;
508 W16(dst, v); dst += 2;
509 apd->dstPos += apd->dstIncr;
510 (*ndst)--;
511 }
512 }
513
514 static void cvtMM816C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
515 unsigned char* dst, LPDWORD ndst)
516 {
517 double r;
518
519 while (*nsrc != 0 && *ndst != 0) {
520 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
521 if (*nsrc == 0) return;
522 apd->last[0].b = *src++;
523 apd->srcPos++;
524 (*nsrc)--;
525 }
526 /* now do the interpolation */
527 W16(dst, I(C816(apd->last[0].b), C816(src[0]), r));
528 dst += 2;
529 apd->dstPos += apd->dstIncr;
530 (*ndst)--;
531 }
532 }
533
534 static void cvtSS168C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
535 unsigned char* dst, LPDWORD ndst)
536 {
537 double r;
538
539 while (*nsrc != 0 && *ndst != 0) {
540 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
541 if (*nsrc == 0) return;
542 apd->last[0].s = R16(src); src += 2;
543 apd->last[1].s = R16(src); src += 2;
544 apd->srcPos++;
545 (*nsrc)--;
546 }
547 /* now do the interpolation */
548 *dst++ = C168(I(apd->last[0].s, R16(src) , r));
549 *dst++ = C168(I(apd->last[1].s, R16(src+2), r));
550 apd->dstPos += apd->dstIncr;
551 (*ndst)--;
552 }
553 }
554
555 static void cvtSM168C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
556 unsigned char* dst, LPDWORD ndst)
557 {
558 double r;
559
560 while (*nsrc != 0 && *ndst != 0) {
561 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
562 if (*nsrc == 0) return;
563 apd->last[0].s = R16(src); src += 2;
564 apd->last[1].s = R16(src); src += 2;
565 apd->srcPos++;
566 (*nsrc)--;
567 }
568 /* now do the interpolation */
569 *dst++ = C168(I(M16(apd->last[0].s, apd->last[1].s),
570 M16(R16(src), R16(src + 2)), r));
571 apd->dstPos += apd->dstIncr;
572 (*ndst)--;
573 }
574 }
575
576
577 static void cvtMS168C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
578 unsigned char* dst, LPDWORD ndst)
579 {
580 double r;
581
582 while (*nsrc != 0 && *ndst != 0) {
583 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
584 if (*nsrc == 0) return;
585 apd->last[0].s = R16(src); src += 2;
586 apd->srcPos++;
587 (*nsrc)--;
588 }
589 /* now do the interpolation */
590 dst[0] = dst[1] = C168(I(apd->last[0].s, R16(src), r)); dst += 2;
591 apd->dstPos += apd->dstIncr;
592 (*ndst)--;
593 }
594 }
595
596
597 static void cvtMM168C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
598 unsigned char* dst, LPDWORD ndst)
599 {
600 double r;
601
602 while (*nsrc != 0 && *ndst != 0) {
603 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
604 if (*nsrc == 0) return;
605 apd->last[0].s = R16(src); src += 2;
606 apd->srcPos++;
607 (*nsrc)--;
608 }
609 /* now do the interpolation */
610 *dst++ = C168(I(apd->last[0].s, R16(src), r));
611 apd->dstPos += apd->dstIncr;
612 (*ndst)--;
613 }
614 }
615
616 static void cvtSS1616C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
617 unsigned char* dst, LPDWORD ndst)
618 {
619 double r;
620
621 while (*nsrc != 0 && *ndst != 0) {
622 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
623 if (*nsrc == 0) return;
624 apd->last[0].s = R16(src); src += 2;
625 apd->last[1].s = R16(src); src += 2;
626 apd->srcPos++;
627 (*nsrc)--;
628 }
629 /* now do the interpolation */
630 W16(dst, I(apd->last[0].s, R16(src) , r)); dst += 2;
631 W16(dst, I(apd->last[1].s, R16(src+2), r)); dst += 2;
632 apd->dstPos += apd->dstIncr;
633 (*ndst)--;
634 }
635 }
636
637 static void cvtSM1616C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
638 unsigned char* dst, LPDWORD ndst)
639 {
640 double r;
641
642 while (*nsrc != 0 && *ndst != 0) {
643 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
644 if (*nsrc == 0) return;
645 apd->last[0].s = R16(src); src += 2;
646 apd->last[1].s = R16(src); src += 2;
647 apd->srcPos++;
648 (*nsrc)--;
649 }
650 /* now do the interpolation */
651 W16(dst, I(M16(apd->last[0].s, apd->last[1].s),
652 M16(R16(src), R16(src+2)), r));
653 dst += 2;
654 apd->dstPos += apd->dstIncr;
655 (*ndst)--;
656 }
657 }
658
659 static void cvtMS1616C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
660 unsigned char* dst, LPDWORD ndst)
661 {
662 double r;
663 short v;
664
665 while (*nsrc != 0 && *ndst != 0) {
666 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
667 if (*nsrc == 0) return;
668 apd->last[0].s = R16(src); src += 2;
669 apd->srcPos++;
670 (*nsrc)--;
671 }
672 /* now do the interpolation */
673 v = I(apd->last[0].s, R16(src), r);
674 W16(dst, v); dst += 2;
675 W16(dst, v); dst += 2;
676 apd->dstPos += apd->dstIncr;
677 (*ndst)--;
678 }
679 }
680
681 static void cvtMM1616C(AcmPcmData* apd, const unsigned char* src, LPDWORD nsrc,
682 unsigned char* dst, LPDWORD ndst)
683 {
684 double r;
685
686 while (*nsrc != 0 && *ndst != 0) {
687 while ((r = (double)apd->srcPos - apd->dstPos) <= 0) {
688 if (*nsrc == 0) return;
689 apd->last[0].s = R16(src); src += 2;
690 apd->srcPos++;
691 (*nsrc)--;
692 }
693 /* now do the interpolation */
694 W16(dst, I(apd->last[0].s, R16(src), r)); dst += 2;
695 apd->dstPos += apd->dstIncr;
696 (*ndst)--;
697 }
698 }
699
700 static void (*PCM_ConvertChangeRate[16])(AcmPcmData* apd,
701 const unsigned char* src, LPDWORD nsrc,
702 unsigned char* dst, LPDWORD ndst) = {
703 cvtSS88C, cvtSM88C, cvtMS88C, cvtMM88C,
704 cvtSS816C, cvtSM816C, cvtMS816C, cvtMM816C,
705 cvtSS168C, cvtSM168C, cvtMS168C, cvtMM168C,
706 cvtSS1616C, cvtSM1616C, cvtMS1616C, cvtMM1616C,
707 };
708
709 /***********************************************************************
710 * PCM_DriverDetails
711 *
712 */
713 static LRESULT PCM_DriverDetails(PACMDRIVERDETAILSW add)
714 {
715 add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
716 add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
717 add->wMid = 0xFF;
718 add->wPid = 0x00;
719 add->vdwACM = 0x01000000;
720 add->vdwDriver = 0x01000000;
721 add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
722 add->cFormatTags = 1;
723 add->cFilterTags = 0;
724 add->hicon = NULL;
725 MultiByteToWideChar( CP_ACP, 0, "WINE-PCM", -1,
726 add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
727 MultiByteToWideChar( CP_ACP, 0, "Wine PCM converter", -1,
728 add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
729 MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
730 add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
731 MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
732 add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
733 add->szFeatures[0] = 0;
734
735 return MMSYSERR_NOERROR;
736 }
737
738 /***********************************************************************
739 * PCM_FormatTagDetails
740 *
741 */
742 static LRESULT PCM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
743 {
744 switch (dwQuery) {
745 case ACM_FORMATTAGDETAILSF_INDEX:
746 if (aftd->dwFormatTagIndex != 0) return ACMERR_NOTPOSSIBLE;
747 break;
748 case ACM_FORMATTAGDETAILSF_FORMATTAG:
749 if (aftd->dwFormatTag != WAVE_FORMAT_PCM) return ACMERR_NOTPOSSIBLE;
750 break;
751 case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
752 if (aftd->dwFormatTag != WAVE_FORMAT_UNKNOWN &&
753 aftd->dwFormatTag != WAVE_FORMAT_PCM)
754 return ACMERR_NOTPOSSIBLE;
755 break;
756 default:
757 WARN("Unsupported query %08lx\n", dwQuery);
758 return MMSYSERR_NOTSUPPORTED;
759 }
760
761 aftd->dwFormatTagIndex = 0;
762 aftd->dwFormatTag = WAVE_FORMAT_PCM;
763 aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
764 aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
765 aftd->cStandardFormats = NUM_PCM_FORMATS;
766 aftd->szFormatTag[0] = 0;
767
768 return MMSYSERR_NOERROR;
769 }
770
771 /***********************************************************************
772 * PCM_FormatDetails
773 *
774 */
775 static LRESULT PCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
776 {
777 switch (dwQuery) {
778 case ACM_FORMATDETAILSF_FORMAT:
779 if (PCM_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
780 break;
781 case ACM_FORMATDETAILSF_INDEX:
782 assert(afd->dwFormatIndex < NUM_PCM_FORMATS);
783 afd->pwfx->wFormatTag = WAVE_FORMAT_PCM;
784 afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
785 afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
786 afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
787 /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not
788 * accessible afd->pwfx->cbSize = 0;
789 */
790 afd->pwfx->nBlockAlign =
791 (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
792 afd->pwfx->nAvgBytesPerSec =
793 afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
794 break;
795 default:
796 WARN("Unsupported query %08lx\n", dwQuery);
797 return MMSYSERR_NOTSUPPORTED;
798 }
799
800 afd->dwFormatTag = WAVE_FORMAT_PCM;
801 afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CONVERTER;
802 afd->szFormat[0] = 0; /* let MSACM format this for us... */
803 afd->cbwfx = sizeof(PCMWAVEFORMAT);
804
805 return MMSYSERR_NOERROR;
806 }
807
808 /***********************************************************************
809 * PCM_FormatSuggest
810 *
811 */
812 static LRESULT PCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
813 {
814 /* some tests ... */
815 if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
816 adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
817 PCM_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
818
819 /* is no suggestion for destination, then copy source value */
820 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS)) {
821 adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
822 }
823 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC)) {
824 adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
825 }
826 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE)) {
827 adfs->pwfxDst->wBitsPerSample = adfs->pwfxSrc->wBitsPerSample;
828 }
829 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG)) {
830 if (adfs->pwfxSrc->wFormatTag != WAVE_FORMAT_PCM) return ACMERR_NOTPOSSIBLE;
831 adfs->pwfxDst->wFormatTag = adfs->pwfxSrc->wFormatTag;
832 }
833 /* check if result is ok */
834 if (PCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
835
836 /* recompute other values */
837 adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
838 adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
839
840 return MMSYSERR_NOERROR;
841 }
842
843 /***********************************************************************
844 * PCM_Reset
845 *
846 */
847 static void PCM_Reset(AcmPcmData* apd, int srcNumBits)
848 {
849 apd->srcPos = 0;
850 apd->dstPos = 0;
851 /* initialize with neutral value */
852 if (srcNumBits == 16) {
853 apd->last[0].s = 0;
854 apd->last[1].s = 0;
855 } else {
856 apd->last[0].b = (BYTE)0x80;
857 apd->last[1].b = (BYTE)0x80;
858 }
859 }
860
861 /***********************************************************************
862 * PCM_StreamOpen
863 *
864 */
865 static LRESULT PCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
866 {
867 AcmPcmData* apd;
868 int idx = 0;
869
870 assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
871
872 if (PCM_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
873 PCM_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
874 return ACMERR_NOTPOSSIBLE;
875
876 apd = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmPcmData));
877 if (apd == 0) return MMSYSERR_NOMEM;
878
879 adsi->dwDriver = (DWORD)apd;
880 adsi->fdwDriver = 0;
881
882 if (adsi->pwfxSrc->wBitsPerSample == 16) idx += 8;
883 if (adsi->pwfxDst->wBitsPerSample == 16) idx += 4;
884 if (adsi->pwfxSrc->nChannels == 1) idx += 2;
885 if (adsi->pwfxDst->nChannels == 1) idx += 1;
886
887 if (adsi->pwfxSrc->nSamplesPerSec == adsi->pwfxDst->nSamplesPerSec) {
888 apd->cvt.cvtKeepRate = PCM_ConvertKeepRate[idx];
889 } else {
890 adsi->fdwDriver |= PCM_RESAMPLE;
891 apd->dstIncr = (double)(adsi->pwfxSrc->nSamplesPerSec) /
892 (double)(adsi->pwfxDst->nSamplesPerSec);
893 PCM_Reset(apd, adsi->pwfxSrc->wBitsPerSample);
894 apd->cvt.cvtChangeRate = PCM_ConvertChangeRate[idx];
895 }
896
897 return MMSYSERR_NOERROR;
898 }
899
900 /***********************************************************************
901 * PCM_StreamClose
902 *
903 */
904 static LRESULT PCM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
905 {
906 HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
907 return MMSYSERR_NOERROR;
908 }
909
910 /***********************************************************************
911 * PCM_round
912 *
913 */
914 static inline DWORD PCM_round(DWORD a, DWORD b, DWORD c)
915 {
916 assert(a && b && c);
917 /* to be sure, always return an entire number of c... */
918 return ((double)a * (double)b + (double)c - 1) / (double)c;
919 }
920
921 /***********************************************************************
922 * PCM_StreamSize
923 *
924 */
925 static LRESULT PCM_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
926 {
927 DWORD srcMask = ~(adsi->pwfxSrc->nBlockAlign - 1);
928 DWORD dstMask = ~(adsi->pwfxDst->nBlockAlign - 1);
929
930 switch (adss->fdwSize) {
931 case ACM_STREAMSIZEF_DESTINATION:
932 /* cbDstLength => cbSrcLength */
933 adss->cbSrcLength = PCM_round(adss->cbDstLength & dstMask,
934 adsi->pwfxSrc->nAvgBytesPerSec,
935 adsi->pwfxDst->nAvgBytesPerSec) & srcMask;
936 break;
937 case ACM_STREAMSIZEF_SOURCE:
938 /* cbSrcLength => cbDstLength */
939 adss->cbDstLength = PCM_round(adss->cbSrcLength & srcMask,
940 adsi->pwfxDst->nAvgBytesPerSec,
941 adsi->pwfxSrc->nAvgBytesPerSec) & dstMask;
942 break;
943 default:
944 WARN("Unsupported query %08lx\n", adss->fdwSize);
945 return MMSYSERR_NOTSUPPORTED;
946 }
947 return MMSYSERR_NOERROR;
948 }
949
950 /***********************************************************************
951 * PCM_StreamConvert
952 *
953 */
954 static LRESULT PCM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
955 {
956 AcmPcmData* apd = (AcmPcmData*)adsi->dwDriver;
957 DWORD nsrc = NUM_OF(adsh->cbSrcLength, adsi->pwfxSrc->nBlockAlign);
958 DWORD ndst = NUM_OF(adsh->cbDstLength, adsi->pwfxDst->nBlockAlign);
959
960 if (adsh->fdwConvert &
961 ~(ACM_STREAMCONVERTF_BLOCKALIGN|
962 ACM_STREAMCONVERTF_END|
963 ACM_STREAMCONVERTF_START)) {
964 FIXME("Unsupported fdwConvert (%08lx), ignoring it\n", adsh->fdwConvert);
965 }
966 /* ACM_STREAMCONVERTF_BLOCKALIGN
967 * currently all conversions are block aligned, so do nothing for this flag
968 * ACM_STREAMCONVERTF_END
969 * no pending data, so do nothing for this flag
970 */
971 if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START) &&
972 (adsi->fdwDriver & PCM_RESAMPLE)) {
973 PCM_Reset(apd, adsi->pwfxSrc->wBitsPerSample);
974 }
975
976 /* do the job */
977 if (adsi->fdwDriver & PCM_RESAMPLE) {
978 DWORD nsrc2 = nsrc;
979 DWORD ndst2 = ndst;
980
981 apd->cvt.cvtChangeRate(apd, adsh->pbSrc, &nsrc2, adsh->pbDst, &ndst2);
982 nsrc -= nsrc2;
983 ndst -= ndst2;
984 } else {
985 if (nsrc < ndst) ndst = nsrc; else nsrc = ndst;
986
987 /* nsrc is now equal to ndst */
988 apd->cvt.cvtKeepRate(adsh->pbSrc, nsrc, adsh->pbDst);
989 }
990
991 adsh->cbSrcLengthUsed = nsrc * adsi->pwfxSrc->nBlockAlign;
992 adsh->cbDstLengthUsed = ndst * adsi->pwfxDst->nBlockAlign;
993
994 return MMSYSERR_NOERROR;
995 }
996
997 /**************************************************************************
998 * DriverProc (MSACM32.@)
999 */
1000 LRESULT CALLBACK PCM_DriverProc(DWORD dwDevID, HDRVR hDriv, UINT wMsg,
1001 LPARAM dwParam1, LPARAM dwParam2)
1002 {
1003 TRACE("(%08lx %08lx %u %08lx %08lx);\n",
1004 dwDevID, (DWORD)hDriv, wMsg, dwParam1, dwParam2);
1005
1006 switch (wMsg) {
1007 case DRV_LOAD: return 1;
1008 case DRV_FREE: return 1;
1009 case DRV_OPEN: return PCM_drvOpen((LPSTR)dwParam1, (PACMDRVOPENDESCW)dwParam2);
1010 case DRV_CLOSE: return PCM_drvClose(dwDevID);
1011 case DRV_ENABLE: return 1;
1012 case DRV_DISABLE: return 1;
1013 case DRV_QUERYCONFIGURE: return 1;
1014 case DRV_CONFIGURE: MessageBoxA(0, "MSACM PCM filter !", "Wine Driver", MB_OK); return 1;
1015 case DRV_INSTALL: return DRVCNF_RESTART;
1016 case DRV_REMOVE: return DRVCNF_RESTART;
1017
1018 case ACMDM_DRIVER_NOTIFY:
1019 /* no caching from other ACM drivers is done so far */
1020 return MMSYSERR_NOERROR;
1021
1022 case ACMDM_DRIVER_DETAILS:
1023 return PCM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
1024
1025 case ACMDM_FORMATTAG_DETAILS:
1026 return PCM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
1027
1028 case ACMDM_FORMAT_DETAILS:
1029 return PCM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
1030
1031 case ACMDM_FORMAT_SUGGEST:
1032 return PCM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
1033
1034 case ACMDM_STREAM_OPEN:
1035 return PCM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
1036
1037 case ACMDM_STREAM_CLOSE:
1038 return PCM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
1039
1040 case ACMDM_STREAM_SIZE:
1041 return PCM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
1042
1043 case ACMDM_STREAM_CONVERT:
1044 return PCM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
1045
1046 case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
1047 case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
1048 /* this converter is not a hardware driver */
1049 case ACMDM_FILTERTAG_DETAILS:
1050 case ACMDM_FILTER_DETAILS:
1051 /* this converter is not a filter */
1052 case ACMDM_STREAM_RESET:
1053 /* only needed for asynchronous driver... we aren't, so just say it */
1054 case ACMDM_STREAM_PREPARE:
1055 case ACMDM_STREAM_UNPREPARE:
1056 /* nothing special to do here... so don't do anything */
1057 return MMSYSERR_NOTSUPPORTED;
1058
1059 default:
1060 return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
1061 }
1062 return 0;
1063 }
DirectPlay implementation for GSoC