Release 1.5.29.
[wine] / dlls / msgsm32.acm / msgsm32.c
1 /*
2  * GSM 06.10 codec handling
3  * Copyright (C) 2009 Maarten Lankhorst
4  *
5  * Based on msg711.acm
6  * Copyright (C) 2002 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21  */
22
23 #include "config.h"
24 #include <wine/port.h>
25
26 #include <assert.h>
27 #include <stdarg.h>
28 #include <string.h>
29
30 #ifdef HAVE_GSM_GSM_H
31 #include <gsm/gsm.h>
32 #elif defined(HAVE_GSM_H)
33 #include <gsm.h>
34 #endif
35
36 #include "windef.h"
37 #include "winbase.h"
38 #include "wingdi.h"
39 #include "winuser.h"
40 #include "winnls.h"
41 #include "mmsystem.h"
42 #include "mmreg.h"
43 #include "msacm.h"
44 #include "msacmdrv.h"
45 #include "wine/library.h"
46 #include "wine/debug.h"
47
48 WINE_DEFAULT_DEBUG_CHANNEL(gsm);
49
50 #ifdef SONAME_LIBGSM
51
52 static void *libgsm_handle;
53 #define FUNCPTR(f) static typeof(f) * p##f
54 FUNCPTR(gsm_create);
55 FUNCPTR(gsm_destroy);
56 FUNCPTR(gsm_option);
57 FUNCPTR(gsm_encode);
58 FUNCPTR(gsm_decode);
59
60 #define LOAD_FUNCPTR(f) \
61     if((p##f = wine_dlsym(libgsm_handle, #f, NULL, 0)) == NULL) { \
62         wine_dlclose(libgsm_handle, NULL, 0); \
63         libgsm_handle = NULL; \
64         return 0; \
65     }
66
67 /***********************************************************************
68  *           GSM_drvLoad
69  */
70 static LRESULT GSM_drvLoad(void)
71 {
72     char error[128];
73
74     libgsm_handle = wine_dlopen(SONAME_LIBGSM, RTLD_NOW, error, sizeof(error));
75     if (libgsm_handle)
76     {
77         LOAD_FUNCPTR(gsm_create);
78         LOAD_FUNCPTR(gsm_destroy);
79         LOAD_FUNCPTR(gsm_option);
80         LOAD_FUNCPTR(gsm_encode);
81         LOAD_FUNCPTR(gsm_decode);
82         return 1;
83     }
84     else
85     {
86         ERR("Couldn't load " SONAME_LIBGSM ": %s\n", error);
87         return 0;
88     }
89 }
90
91 /***********************************************************************
92  *           GSM_drvFree
93  */
94 static LRESULT GSM_drvFree(void)
95 {
96     if (libgsm_handle)
97         wine_dlclose(libgsm_handle, NULL, 0);
98     return 1;
99 }
100
101 #else
102
103 static LRESULT GSM_drvFree(void)
104 {
105     return 1;
106 }
107
108 #endif
109
110 /***********************************************************************
111  *           GSM_DriverDetails
112  *
113  */
114 static  LRESULT GSM_DriverDetails(PACMDRIVERDETAILSW add)
115 {
116     add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
117     add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
118     /* Details found from probing native msgsm32.acm */
119     add->wMid = MM_MICROSOFT;
120     add->wPid = 36;
121     add->vdwACM = 0x3320000;
122     add->vdwDriver = 0x4000000;
123     add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
124     add->cFormatTags = 2;
125     add->cFilterTags = 0;
126     add->hicon = NULL;
127     MultiByteToWideChar( CP_ACP, 0, "Wine GSM 6.10", -1,
128                          add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
129     MultiByteToWideChar( CP_ACP, 0, "Wine GSM 6.10 libgsm codec", -1,
130                          add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
131     MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
132                          add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
133     MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
134                          add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
135     add->szFeatures[0] = 0;
136     return MMSYSERR_NOERROR;
137 }
138
139 /* Validate a WAVEFORMATEX structure */
140 static DWORD GSM_FormatValidate(const WAVEFORMATEX *wfx)
141 {
142     if (wfx->nChannels != 1)
143         return 0;
144
145     switch (wfx->wFormatTag)
146     {
147     case WAVE_FORMAT_PCM:
148         if (wfx->wBitsPerSample != 16)
149         {
150             WARN("PCM wBitsPerSample %u\n", wfx->wBitsPerSample);
151             return 0;
152         }
153         if (wfx->nBlockAlign != 2)
154         {
155             WARN("PCM nBlockAlign %u\n", wfx->nBlockAlign);
156             return 0;
157         }
158         if (wfx->nAvgBytesPerSec != wfx->nBlockAlign * wfx->nSamplesPerSec)
159         {
160             WARN("PCM nAvgBytesPerSec %u/%u\n",
161                  wfx->nAvgBytesPerSec,
162                  wfx->nBlockAlign * wfx->nSamplesPerSec);
163             return 0;
164         }
165         return 1;
166     case WAVE_FORMAT_GSM610:
167         if (wfx->cbSize < sizeof(WORD))
168         {
169             WARN("GSM cbSize %u\n", wfx->cbSize);
170             return 0;
171         }
172         if (wfx->wBitsPerSample != 0)
173         {
174             WARN("GSM wBitsPerSample %u\n", wfx->wBitsPerSample);
175             return 0;
176         }
177         if (wfx->nBlockAlign != 65)
178         {
179             WARN("GSM nBlockAlign %u\n", wfx->nBlockAlign);
180             return 0;
181         }
182         if (((const GSM610WAVEFORMAT*)wfx)->wSamplesPerBlock != 320)
183         {
184             WARN("GSM wSamplesPerBlock %u\n",
185                  ((const GSM610WAVEFORMAT*)wfx)->wSamplesPerBlock);
186             return 0;
187         }
188         if (wfx->nAvgBytesPerSec != wfx->nSamplesPerSec * 65 / 320)
189         {
190             WARN("GSM nAvgBytesPerSec %d / %d\n",
191                  wfx->nAvgBytesPerSec, wfx->nSamplesPerSec * 65 / 320);
192             return 0;
193         }
194         return 1;
195     default:
196         return 0;
197     }
198     return 0;
199 }
200
201 static const DWORD gsm_rates[] = { 8000, 11025, 22050, 44100, 48000, 96000 };
202 #define NUM_RATES (sizeof(gsm_rates)/sizeof(*gsm_rates))
203
204 /***********************************************************************
205  *           GSM_FormatTagDetails
206  *
207  */
208 static  LRESULT GSM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
209 {
210     static const WCHAR szPcm[]={'P','C','M',0};
211     static const WCHAR szGsm[]={'G','S','M',' ','6','.','1','0',0};
212
213     switch (dwQuery)
214     {
215     case ACM_FORMATTAGDETAILSF_INDEX:
216         if (aftd->dwFormatTagIndex > 1) return ACMERR_NOTPOSSIBLE;
217         break;
218     case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
219         if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
220         {
221             aftd->dwFormatTagIndex = 1;
222             break;
223         }
224         /* fall through */
225     case ACM_FORMATTAGDETAILSF_FORMATTAG:
226         switch (aftd->dwFormatTag)
227         {
228         case WAVE_FORMAT_PCM: aftd->dwFormatTagIndex = 0; break;
229         case WAVE_FORMAT_GSM610: aftd->dwFormatTagIndex = 1; break;
230         default: return ACMERR_NOTPOSSIBLE;
231         }
232         break;
233     default:
234         WARN("Unsupported query %08x\n", dwQuery);
235         return MMSYSERR_NOTSUPPORTED;
236     }
237
238     aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
239     switch (aftd->dwFormatTagIndex)
240     {
241     case 0:
242         aftd->dwFormatTag = WAVE_FORMAT_PCM;
243         aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
244         aftd->cStandardFormats = NUM_RATES;
245         lstrcpyW(aftd->szFormatTag, szPcm);
246         break;
247     case 1:
248         aftd->dwFormatTag = WAVE_FORMAT_GSM610;
249         aftd->cbFormatSize = sizeof(GSM610WAVEFORMAT);
250         aftd->cStandardFormats = NUM_RATES;
251         lstrcpyW(aftd->szFormatTag, szGsm);
252         break;
253     }
254     return MMSYSERR_NOERROR;
255 }
256
257 /***********************************************************************
258  *           GSM_FormatDetails
259  *
260  */
261 static  LRESULT GSM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
262 {
263     switch (dwQuery)
264     {
265     case ACM_FORMATDETAILSF_FORMAT:
266         if (!GSM_FormatValidate(afd->pwfx)) return ACMERR_NOTPOSSIBLE;
267         break;
268     case ACM_FORMATDETAILSF_INDEX:
269         afd->pwfx->wFormatTag = afd->dwFormatTag;
270         switch (afd->dwFormatTag)
271         {
272         case WAVE_FORMAT_PCM:
273             if (afd->dwFormatIndex >= NUM_RATES) return ACMERR_NOTPOSSIBLE;
274             afd->pwfx->nChannels = 1;
275             afd->pwfx->nSamplesPerSec = gsm_rates[afd->dwFormatIndex];
276             afd->pwfx->wBitsPerSample = 16;
277             afd->pwfx->nBlockAlign = 2;
278             afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
279             break;
280         case WAVE_FORMAT_GSM610:
281             if (afd->dwFormatIndex >= NUM_RATES) return ACMERR_NOTPOSSIBLE;
282             afd->pwfx->nChannels = 1;
283             afd->pwfx->nSamplesPerSec = gsm_rates[afd->dwFormatIndex];
284             afd->pwfx->wBitsPerSample = 0;
285             afd->pwfx->nBlockAlign = 65;
286             afd->pwfx->nAvgBytesPerSec = afd->pwfx->nSamplesPerSec * 65 / 320;
287             afd->pwfx->cbSize = sizeof(WORD);
288             ((GSM610WAVEFORMAT*)afd->pwfx)->wSamplesPerBlock = 320;
289             break;
290         default:
291             WARN("Unsupported tag %08x\n", afd->dwFormatTag);
292             return MMSYSERR_INVALPARAM;
293         }
294         break;
295     default:
296         WARN("Unsupported query %08x\n", dwQuery);
297         return MMSYSERR_NOTSUPPORTED;
298     }
299     afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
300     afd->szFormat[0] = 0; /* let MSACM format this for us... */
301
302     return MMSYSERR_NOERROR;
303 }
304
305 /***********************************************************************
306  *           GSM_FormatSuggest
307  *
308  */
309 static  LRESULT GSM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
310 {
311     /* some tests ... */
312     if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
313         adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
314         !GSM_FormatValidate(adfs->pwfxSrc)) return ACMERR_NOTPOSSIBLE;
315     /* FIXME: should do those tests against the real size (according to format tag */
316
317     /* If no suggestion for destination, then copy source value */
318     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
319         adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
320     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
321         adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
322
323     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
324     {
325         if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
326             adfs->pwfxDst->wBitsPerSample = 0;
327         else
328             adfs->pwfxDst->wBitsPerSample = 16;
329     }
330     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
331     {
332         switch (adfs->pwfxSrc->wFormatTag)
333         {
334         case WAVE_FORMAT_PCM: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_GSM610; break;
335         case WAVE_FORMAT_GSM610: adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM; break;
336         }
337     }
338
339     /* recompute other values */
340     switch (adfs->pwfxDst->wFormatTag)
341     {
342     case WAVE_FORMAT_PCM:
343         adfs->pwfxDst->nBlockAlign = 2;
344         adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * 2;
345         break;
346     case WAVE_FORMAT_GSM610:
347         if (adfs->pwfxDst->cbSize < sizeof(WORD))
348             return ACMERR_NOTPOSSIBLE;
349         adfs->pwfxDst->nBlockAlign = 65;
350         adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * 65 / 320;
351         ((GSM610WAVEFORMAT*)adfs->pwfxDst)->wSamplesPerBlock = 320;
352         break;
353     default:
354         return ACMERR_NOTPOSSIBLE;
355     }
356
357     /* check if result is ok */
358     if (!GSM_FormatValidate(adfs->pwfxDst)) return ACMERR_NOTPOSSIBLE;
359     return MMSYSERR_NOERROR;
360 }
361
362 #ifdef SONAME_LIBGSM
363 /***********************************************************************
364  *           GSM_StreamOpen
365  *
366  */
367 static  LRESULT GSM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
368 {
369     int used = 1;
370     gsm r;
371     if (!GSM_FormatValidate(adsi->pwfxSrc) || !GSM_FormatValidate(adsi->pwfxDst))
372         return MMSYSERR_NOTSUPPORTED;
373
374     if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec)
375         return MMSYSERR_NOTSUPPORTED;
376
377     if (!GSM_drvLoad()) return MMSYSERR_NOTSUPPORTED;
378
379     r = pgsm_create();
380     if (!r)
381         return MMSYSERR_NOMEM;
382     if (pgsm_option(r, GSM_OPT_WAV49, &used) < 0)
383     {
384         FIXME("Your libgsm library doesn't support GSM_OPT_WAV49\n");
385         FIXME("Please recompile libgsm with WAV49 support\n");
386         pgsm_destroy(r);
387         return MMSYSERR_NOTSUPPORTED;
388     }
389     adsi->dwDriver = (DWORD_PTR)r;
390     return MMSYSERR_NOERROR;
391 }
392
393 /***********************************************************************
394  *           GSM_StreamClose
395  *
396  */
397 static  LRESULT GSM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
398 {
399     pgsm_destroy((gsm)adsi->dwDriver);
400     return MMSYSERR_NOERROR;
401 }
402
403 /***********************************************************************
404  *           GSM_StreamSize
405  *
406  */
407 static  LRESULT GSM_StreamSize(const ACMDRVSTREAMINSTANCE *adsi, PACMDRVSTREAMSIZE adss)
408 {
409     switch (adss->fdwSize)
410     {
411     case ACM_STREAMSIZEF_DESTINATION:
412         /* cbDstLength => cbSrcLength */
413         if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
414              adsi->pwfxDst->wFormatTag == WAVE_FORMAT_GSM610)
415         {
416             adss->cbSrcLength = adss->cbDstLength / 65 * 640;
417         }
418         else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610 &&
419                  adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
420         {
421             adss->cbSrcLength = adss->cbDstLength / 640 * 65;
422         }
423         else
424         {
425             return MMSYSERR_NOTSUPPORTED;
426         }
427         return MMSYSERR_NOERROR;
428     case ACM_STREAMSIZEF_SOURCE:
429         /* cbSrcLength => cbDstLength */
430         if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
431              adsi->pwfxDst->wFormatTag == WAVE_FORMAT_GSM610)
432         {
433             adss->cbDstLength = (adss->cbSrcLength + 639) / 640 * 65;
434         }
435         else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610 &&
436                  adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
437         {
438             adss->cbDstLength = adss->cbSrcLength / 65 * 640;
439         }
440         else
441         {
442             return MMSYSERR_NOTSUPPORTED;
443         }
444         return MMSYSERR_NOERROR;
445     default:
446         WARN("Unsupported query %08x\n", adss->fdwSize);
447         return MMSYSERR_NOTSUPPORTED;
448     }
449 }
450
451 /***********************************************************************
452  *           GSM_StreamConvert
453  *
454  */
455 static LRESULT GSM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
456 {
457     gsm r = (gsm)adsi->dwDriver;
458     DWORD nsrc = 0;
459     DWORD ndst = 0;
460     BYTE *src = adsh->pbSrc;
461     BYTE *dst = adsh->pbDst;
462     int odd = 0;
463
464     if (adsh->fdwConvert &
465         ~(ACM_STREAMCONVERTF_BLOCKALIGN|
466           ACM_STREAMCONVERTF_END|
467           ACM_STREAMCONVERTF_START))
468     {
469         FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert);
470     }
471
472     /* Reset the index to 0, just to be sure */
473     pgsm_option(r, GSM_OPT_FRAME_INDEX, &odd);
474
475     /* The native ms codec writes 65 bytes, and this requires 2 libgsm calls.
476      * First 32 bytes are written, or 33 bytes read
477      * Second 33 bytes are written, or 32 bytes read
478      */
479
480     /* Decode */
481     if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_GSM610)
482     {
483         if (adsh->cbSrcLength / 65 * 640 > adsh->cbDstLength)
484         {
485              return ACMERR_NOTPOSSIBLE;
486         }
487
488         while (nsrc + 65 <= adsh->cbSrcLength)
489         {
490             /* Decode data */
491             if (pgsm_decode(r, src + nsrc, (gsm_signal*)(dst + ndst)) < 0)
492                 FIXME("Couldn't decode data\n");
493             ndst += 320;
494             nsrc += 33;
495
496             if (pgsm_decode(r, src + nsrc, (gsm_signal*)(dst + ndst)) < 0)
497                 FIXME("Couldn't decode data\n");
498             ndst += 320;
499             nsrc += 32;
500         }
501     }
502     else
503     {
504         /* Testing a little seems to reveal that despite being able to fit
505          * inside the buffer if ACM_STREAMCONVERTF_BLOCKALIGN is set
506          * it still rounds up
507          */
508         if ((adsh->cbSrcLength + 639) / 640 * 65 > adsh->cbDstLength)
509         {
510             return ACMERR_NOTPOSSIBLE;
511         }
512
513         /* The packing algorythm writes 32 bytes, then 33 bytes,
514          * and it seems to pad to align to 65 bytes always
515          * adding extra data where necessary
516          */
517         while (nsrc + 640 <= adsh->cbSrcLength)
518         {
519             /* Encode data */
520             pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
521             nsrc += 320;
522             ndst += 32;
523             pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
524             nsrc += 320;
525             ndst += 33;
526         }
527
528         /* If ACM_STREAMCONVERTF_BLOCKALIGN isn't set pad with zeros */
529         if (!(adsh->fdwConvert & ACM_STREAMCONVERTF_BLOCKALIGN) &&
530             nsrc < adsh->cbSrcLength)
531         {
532             char emptiness[320];
533             int todo = adsh->cbSrcLength - nsrc;
534
535             if (todo > 320)
536             {
537                 pgsm_encode(r, (gsm_signal*)(src+nsrc), dst+ndst);
538                 ndst += 32;
539                 todo -= 320;
540                 nsrc += 320;
541
542                 memcpy(emptiness, src+nsrc, todo);
543                 memset(emptiness + todo, 0, 320 - todo);
544                 pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
545                 ndst += 33;
546             }
547             else
548             {
549                 memcpy(emptiness, src+nsrc, todo);
550                 memset(emptiness + todo, 0, 320 - todo);
551                 pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
552                 ndst += 32;
553
554                 memset(emptiness, 0, todo);
555                 pgsm_encode(r, (gsm_signal*)emptiness, dst+ndst);
556                 ndst += 33;
557             }
558             nsrc = adsh->cbSrcLength;
559         }
560     }
561
562     adsh->cbSrcLengthUsed = nsrc;
563     adsh->cbDstLengthUsed = ndst;
564     TRACE("%d(%d) -> %d(%d)\n", nsrc, adsh->cbSrcLength, ndst, adsh->cbDstLength);
565     return MMSYSERR_NOERROR;
566 }
567
568 #endif
569
570 /**************************************************************************
571  *                      GSM_DriverProc                  [exported]
572  */
573 LRESULT CALLBACK GSM_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
574                                          LPARAM dwParam1, LPARAM dwParam2)
575 {
576     TRACE("(%08lx %p %04x %08lx %08lx);\n",
577           dwDevID, hDriv, wMsg, dwParam1, dwParam2);
578
579     switch (wMsg)
580     {
581     case DRV_LOAD:              return 1;
582     case DRV_FREE:              return GSM_drvFree();
583     case DRV_OPEN:              return 1;
584     case DRV_CLOSE:             return 1;
585     case DRV_ENABLE:            return 1;
586     case DRV_DISABLE:           return 1;
587     case DRV_QUERYCONFIGURE:    return 1;
588     case DRV_CONFIGURE:         MessageBoxA(0, "GSM 06.10 codec", "Wine Driver", MB_OK); return 1;
589     case DRV_INSTALL:           return DRVCNF_RESTART;
590     case DRV_REMOVE:            return DRVCNF_RESTART;
591
592     case ACMDM_DRIVER_NOTIFY:
593         /* no caching from other ACM drivers is done so far */
594         return MMSYSERR_NOERROR;
595
596     case ACMDM_DRIVER_DETAILS:
597         return GSM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
598
599     case ACMDM_FORMATTAG_DETAILS:
600         return GSM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
601
602     case ACMDM_FORMAT_DETAILS:
603         return GSM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
604
605     case ACMDM_FORMAT_SUGGEST:
606         return GSM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
607
608 #ifdef SONAME_LIBGSM
609     case ACMDM_STREAM_OPEN:
610         return GSM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
611
612     case ACMDM_STREAM_CLOSE:
613         return GSM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
614
615     case ACMDM_STREAM_SIZE:
616         return GSM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
617
618     case ACMDM_STREAM_CONVERT:
619         return GSM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
620 #else
621     case ACMDM_STREAM_OPEN: WARN("libgsm support not compiled in!\n");
622     case ACMDM_STREAM_CLOSE:
623     case ACMDM_STREAM_SIZE:
624     case ACMDM_STREAM_CONVERT:
625         return MMSYSERR_NOTSUPPORTED;
626 #endif
627
628     case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
629     case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
630         /* this converter is not a hardware driver */
631     case ACMDM_FILTERTAG_DETAILS:
632     case ACMDM_FILTER_DETAILS:
633         /* this converter is not a filter */
634     case ACMDM_STREAM_RESET:
635         /* only needed for asynchronous driver... we aren't, so just say it */
636         return MMSYSERR_NOTSUPPORTED;
637     case ACMDM_STREAM_PREPARE:
638     case ACMDM_STREAM_UNPREPARE:
639         /* nothing special to do here... so don't do anything */
640         return MMSYSERR_NOERROR;
641
642     default:
643         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
644     }
645 }