dbghelp: Fix an invalid pointer cast.
[wine] / dlls / winemp3.acm / mpegl3.c
1 /*
2  * MPEG Layer 3 handling
3  *
4  *      Copyright (C) 2002              Eric Pouech
5  *      Copyright (C) 2009              CodeWeavers, Aric Stewart
6  *
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 #include "windef.h"
30 #include "winbase.h"
31 #include "wingdi.h"
32 #include "winuser.h"
33 #include "winnls.h"
34 #include "mmsystem.h"
35 #include "mmreg.h"
36 #include "msacm.h"
37 #include "msacmdrv.h"
38
39 #ifdef HAVE_MPG123_H
40 #include <mpg123.h>
41 #endif
42
43 #include "wine/debug.h"
44
45 WINE_DEFAULT_DEBUG_CHANNEL(mpeg3);
46
47 /***********************************************************************
48  *           MPEG3_drvOpen
49  */
50 static LRESULT MPEG3_drvOpen(LPCSTR str)
51 {
52     mpg123_init();
53     return 1;
54 }
55
56 /***********************************************************************
57  *           MPEG3_drvClose
58  */
59 static LRESULT MPEG3_drvClose(DWORD_PTR dwDevID)
60 {
61     mpg123_exit();
62     return 1;
63 }
64
65 typedef struct tagAcmMpeg3Data
66 {
67     void (*convert)(PACMDRVSTREAMINSTANCE adsi,
68                     const unsigned char*, LPDWORD, unsigned char*, LPDWORD);
69     mpg123_handle *mh;
70 } AcmMpeg3Data;
71
72 /* table to list all supported formats... those are the basic ones. this
73  * also helps given a unique index to each of the supported formats
74  */
75 typedef struct
76 {
77     int         nChannels;
78     int         nBits;
79     int         rate;
80 } Format;
81
82 static const Format PCM_Formats[] =
83 {
84     {1,  8,  8000}, {2,  8,  8000}, {1, 16,  8000}, {2, 16,  8000},
85     {1,  8, 11025}, {2,  8, 11025}, {1, 16, 11025}, {2, 16, 11025},
86     {1,  8, 12000}, {2,  8, 12000}, {1, 16, 12000}, {2, 16, 12000},
87     {1,  8, 16000}, {2,  8, 16000}, {1, 16, 16000}, {2, 16, 16000},
88     {1,  8, 22050}, {2,  8, 22050}, {1, 16, 22050}, {2, 16, 22050},
89     {1,  8, 24000}, {2,  8, 24000}, {1, 16, 24000}, {2, 16, 24000},
90     {1,  8, 32000}, {2,  8, 32000}, {1, 16, 32000}, {2, 16, 32000},
91     {1,  8, 44100}, {2,  8, 44100}, {1, 16, 44100}, {2, 16, 44100},
92     {1,  8, 48000}, {2,  8, 48000}, {1, 16, 48000}, {2, 16, 48000}
93 };
94
95 static const Format MPEG3_Formats[] =
96 {
97     {1,  0,  8000}, {2,  0,  8000},
98     {1,  0, 11025}, {2,  0, 11025},
99     {1,  0, 12000}, {2,  0, 12000},
100     {1,  0, 16000}, {2,  0, 16000},
101     {1,  0, 22050}, {2,  0, 22050},
102     {1,  0, 24000}, {2,  0, 24000},
103     {1,  0, 32000}, {2,  0, 32000},
104     {1,  0, 44100}, {2,  0, 44100},
105     {1,  0, 48000}, {2,  0, 48000}
106 };
107
108 #define NUM_PCM_FORMATS         (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
109 #define NUM_MPEG3_FORMATS       (sizeof(MPEG3_Formats) / sizeof(MPEG3_Formats[0]))
110
111 /***********************************************************************
112  *           MPEG3_GetFormatIndex
113  */
114 static  DWORD   MPEG3_GetFormatIndex(LPWAVEFORMATEX wfx)
115 {
116     int         i, hi;
117     const Format *fmts;
118
119     switch (wfx->wFormatTag)
120     {
121     case WAVE_FORMAT_PCM:
122         hi = NUM_PCM_FORMATS;
123         fmts = PCM_Formats;
124         break;
125     case WAVE_FORMAT_MPEGLAYER3:
126         hi = NUM_MPEG3_FORMATS;
127         fmts = MPEG3_Formats;
128         break;
129     default:
130         return 0xFFFFFFFF;
131     }
132
133     for (i = 0; i < hi; i++)
134     {
135         if (wfx->nChannels == fmts[i].nChannels &&
136             wfx->nSamplesPerSec == fmts[i].rate &&
137             (wfx->wBitsPerSample == fmts[i].nBits || !fmts[i].nBits))
138             return i;
139     }
140
141     return 0xFFFFFFFF;
142 }
143
144 static void mp3_horse(PACMDRVSTREAMINSTANCE adsi,
145                       const unsigned char* src, LPDWORD nsrc,
146                       unsigned char* dst, LPDWORD ndst)
147 {
148     AcmMpeg3Data*       amd = (AcmMpeg3Data*)adsi->dwDriver;
149     int                 ret;
150     size_t              size;
151     DWORD               dpos = 0;
152
153
154     if (*nsrc > 0)
155     {
156         ret = mpg123_feed(amd->mh, src, *nsrc);
157         if (ret != MPG123_OK)
158         {
159             ERR("Error feeding data\n");
160             *ndst = *nsrc = 0;
161             return;
162         }
163     }
164
165     do {
166         size = 0;
167         ret = mpg123_read(amd->mh, dst + dpos, *ndst - dpos, &size);
168         if (ret == MPG123_ERR)
169         {
170             FIXME("Error occurred during decoding!\n");
171             *ndst = *nsrc = 0;
172             return;
173         }
174
175         if (ret == MPG123_NEW_FORMAT)
176         {
177             if TRACE_ON(mpeg3)
178             {
179                 long rate;
180                 int channels, enc;
181                 mpg123_getformat(amd->mh, &rate, &channels, &enc);
182                 TRACE("New format: %li Hz, %i channels, encoding value %i\n", rate, channels, enc);
183             }
184         }
185         dpos += size;
186     } while (ret == MPG123_OK);
187     *ndst = dpos;
188 }
189
190 /***********************************************************************
191  *           MPEG3_DriverDetails
192  *
193  */
194 static  LRESULT MPEG3_DriverDetails(PACMDRIVERDETAILSW add)
195 {
196     add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
197     add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
198     add->wMid = 0xFF;
199     add->wPid = 0x00;
200     add->vdwACM = 0x01000000;
201     add->vdwDriver = 0x01000000;
202     add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
203     add->cFormatTags = 2; /* PCM, MPEG3 */
204     add->cFilterTags = 0;
205     add->hicon = NULL;
206     MultiByteToWideChar( CP_ACP, 0, "WINE-MPEG3", -1,
207                          add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
208     MultiByteToWideChar( CP_ACP, 0, "Wine MPEG3 decoder", -1,
209                          add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
210     MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
211                          add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
212     MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
213                          add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
214     add->szFeatures[0] = 0;
215
216     return MMSYSERR_NOERROR;
217 }
218
219 /***********************************************************************
220  *           MPEG3_FormatTagDetails
221  *
222  */
223 static  LRESULT MPEG3_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
224 {
225     static const WCHAR szPcm[]={'P','C','M',0};
226     static const WCHAR szMpeg3[]={'M','P','e','g','3',0};
227
228     switch (dwQuery)
229     {
230     case ACM_FORMATTAGDETAILSF_INDEX:
231         if (aftd->dwFormatTagIndex >= 2) return ACMERR_NOTPOSSIBLE;
232         break;
233     case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
234         if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
235         {
236             aftd->dwFormatTagIndex = 1; /* WAVE_FORMAT_MPEGLAYER3 is bigger than PCM */
237             break;
238         }
239         /* fall thru */
240     case ACM_FORMATTAGDETAILSF_FORMATTAG:
241         switch (aftd->dwFormatTag)
242         {
243         case WAVE_FORMAT_PCM:           aftd->dwFormatTagIndex = 0; break;
244         case WAVE_FORMAT_MPEGLAYER3:    aftd->dwFormatTagIndex = 1; break;
245         default:                        return ACMERR_NOTPOSSIBLE;
246         }
247         break;
248     default:
249         WARN("Unsupported query %08x\n", dwQuery);
250         return MMSYSERR_NOTSUPPORTED;
251     }
252
253     aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
254     switch (aftd->dwFormatTagIndex)
255     {
256     case 0:
257         aftd->dwFormatTag = WAVE_FORMAT_PCM;
258         aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
259         aftd->cStandardFormats = NUM_PCM_FORMATS;
260         lstrcpyW(aftd->szFormatTag, szPcm);
261         break;
262     case 1:
263         aftd->dwFormatTag = WAVE_FORMAT_MPEGLAYER3;
264         aftd->cbFormatSize = sizeof(MPEGLAYER3WAVEFORMAT);
265         aftd->cStandardFormats = NUM_MPEG3_FORMATS;
266         lstrcpyW(aftd->szFormatTag, szMpeg3);
267         break;
268     }
269     return MMSYSERR_NOERROR;
270 }
271
272 static void fill_in_wfx(unsigned cbwfx, WAVEFORMATEX* wfx, unsigned bit_rate)
273 {
274     MPEGLAYER3WAVEFORMAT*   mp3wfx = (MPEGLAYER3WAVEFORMAT*)wfx;
275
276     wfx->nAvgBytesPerSec = bit_rate / 8;
277     if (cbwfx >= sizeof(WAVEFORMATEX))
278         wfx->cbSize = sizeof(MPEGLAYER3WAVEFORMAT) - sizeof(WAVEFORMATEX);
279     if (cbwfx >= sizeof(MPEGLAYER3WAVEFORMAT))
280     {
281         mp3wfx->wID = MPEGLAYER3_ID_MPEG;
282         mp3wfx->fdwFlags = MPEGLAYER3_FLAG_PADDING_OFF;
283         mp3wfx->nBlockSize = (bit_rate * 144) / wfx->nSamplesPerSec;
284         mp3wfx->nFramesPerBlock = 1;
285         mp3wfx->nCodecDelay = 0x0571;
286     }
287 }
288
289 /***********************************************************************
290  *           MPEG3_FormatDetails
291  *
292  */
293 static  LRESULT MPEG3_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
294 {
295     switch (dwQuery)
296     {
297     case ACM_FORMATDETAILSF_FORMAT:
298         if (MPEG3_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
299         break;
300     case ACM_FORMATDETAILSF_INDEX:
301         afd->pwfx->wFormatTag = afd->dwFormatTag;
302         switch (afd->dwFormatTag)
303         {
304         case WAVE_FORMAT_PCM:
305             if (afd->dwFormatIndex >= NUM_PCM_FORMATS) return ACMERR_NOTPOSSIBLE;
306             afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
307             afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
308             afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
309             /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
310              * afd->pwfx->cbSize = 0;
311              */
312             afd->pwfx->nBlockAlign =
313                 (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
314             afd->pwfx->nAvgBytesPerSec =
315                 afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
316             break;
317         case WAVE_FORMAT_MPEGLAYER3:
318             if (afd->dwFormatIndex >= NUM_MPEG3_FORMATS) return ACMERR_NOTPOSSIBLE;
319             afd->pwfx->nChannels = MPEG3_Formats[afd->dwFormatIndex].nChannels;
320             afd->pwfx->nSamplesPerSec = MPEG3_Formats[afd->dwFormatIndex].rate;
321             afd->pwfx->wBitsPerSample = MPEG3_Formats[afd->dwFormatIndex].nBits;
322             afd->pwfx->nBlockAlign = 1;
323             fill_in_wfx(afd->cbwfx, afd->pwfx, 192000);
324             break;
325         default:
326             WARN("Unsupported tag %08x\n", afd->dwFormatTag);
327             return MMSYSERR_INVALPARAM;
328         }
329         break;
330     default:
331         WARN("Unsupported query %08x\n", dwQuery);
332         return MMSYSERR_NOTSUPPORTED;
333     }
334     afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
335     afd->szFormat[0] = 0; /* let MSACM format this for us... */
336
337     return MMSYSERR_NOERROR;
338 }
339
340 /***********************************************************************
341  *           MPEG3_FormatSuggest
342  *
343  */
344 static  LRESULT MPEG3_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
345 {
346     /* some tests ... */
347     if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
348         adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
349         MPEG3_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
350     /* FIXME: should do those tests against the real size (according to format tag */
351
352     /* If no suggestion for destination, then copy source value */
353     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
354         adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
355     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
356         adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
357
358     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
359     {
360         if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
361             adfs->pwfxDst->wBitsPerSample = 4;
362         else
363             adfs->pwfxDst->wBitsPerSample = 16;
364     }
365     if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
366     {
367         if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
368             adfs->pwfxDst->wFormatTag = WAVE_FORMAT_MPEGLAYER3;
369         else
370             adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
371     }
372
373     /* check if result is ok */
374     if (MPEG3_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
375
376     /* recompute other values */
377     switch (adfs->pwfxDst->wFormatTag)
378     {
379     case WAVE_FORMAT_PCM:
380         adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
381         adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
382         break;
383     case WAVE_FORMAT_MPEGLAYER3:
384         adfs->pwfxDst->nBlockAlign = 1;
385         fill_in_wfx(adfs->cbwfxDst, adfs->pwfxDst, 192000);
386         break;
387     default:
388         FIXME("\n");
389         break;
390     }
391
392     return MMSYSERR_NOERROR;
393 }
394
395 /***********************************************************************
396  *           MPEG3_Reset
397  *
398  */
399 static void MPEG3_Reset(PACMDRVSTREAMINSTANCE adsi, AcmMpeg3Data* aad)
400 {
401     mpg123_feedseek(aad->mh, 0, SEEK_SET, NULL);
402     mpg123_close(aad->mh);
403     mpg123_open_feed(aad->mh);
404 }
405
406 /***********************************************************************
407  *           MPEG3_StreamOpen
408  *
409  */
410 static  LRESULT MPEG3_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
411 {
412     AcmMpeg3Data*       aad;
413     int err;
414
415     assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
416
417     if (MPEG3_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
418         MPEG3_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
419         return ACMERR_NOTPOSSIBLE;
420
421     aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmMpeg3Data));
422     if (aad == 0) return MMSYSERR_NOMEM;
423
424     adsi->dwDriver = (DWORD_PTR)aad;
425
426     if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
427         adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
428     {
429         goto theEnd;
430     }
431     else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
432              adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
433     {
434         /* resampling or mono <=> stereo not available
435          * MPEG3 algo only define 16 bit per sample output
436          */
437         if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
438             adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
439             adsi->pwfxDst->wBitsPerSample != 16)
440             goto theEnd;
441         aad->convert = mp3_horse;
442         aad->mh = mpg123_new(NULL,&err);
443         mpg123_open_feed(aad->mh);
444     }
445     /* no encoding yet
446     else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
447              adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
448     */
449     else goto theEnd;
450     MPEG3_Reset(adsi, aad);
451
452     return MMSYSERR_NOERROR;
453
454  theEnd:
455     HeapFree(GetProcessHeap(), 0, aad);
456     adsi->dwDriver = 0L;
457     return MMSYSERR_NOTSUPPORTED;
458 }
459
460 /***********************************************************************
461  *           MPEG3_StreamClose
462  *
463  */
464 static  LRESULT MPEG3_StreamClose(PACMDRVSTREAMINSTANCE adsi)
465 {
466     mpg123_close(((AcmMpeg3Data*)adsi->dwDriver)->mh);
467     mpg123_delete(((AcmMpeg3Data*)adsi->dwDriver)->mh);
468     HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
469     return MMSYSERR_NOERROR;
470 }
471
472 /***********************************************************************
473  *           MPEG3_StreamSize
474  *
475  */
476 static  LRESULT MPEG3_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
477 {
478     DWORD nblocks;
479
480     switch (adss->fdwSize)
481     {
482     case ACM_STREAMSIZEF_DESTINATION:
483         /* cbDstLength => cbSrcLength */
484         if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
485             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
486         {
487             nblocks = (adss->cbDstLength - 3000) / (DWORD)(adsi->pwfxDst->nAvgBytesPerSec * 1152 / adsi->pwfxDst->nSamplesPerSec + 0.5);
488             if (nblocks == 0)
489                 return ACMERR_NOTPOSSIBLE;
490             adss->cbSrcLength = nblocks * 1152 * adsi->pwfxSrc->nBlockAlign;
491         }
492         else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
493                  adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
494         {
495             nblocks = adss->cbDstLength / (adsi->pwfxDst->nBlockAlign * 1152);
496             if (nblocks == 0)
497                 return ACMERR_NOTPOSSIBLE;
498             adss->cbSrcLength = nblocks * (DWORD)(adsi->pwfxSrc->nAvgBytesPerSec * 1152 / adsi->pwfxSrc->nSamplesPerSec);
499         }
500         else
501         {
502             return MMSYSERR_NOTSUPPORTED;
503         }
504         break;
505     case ACM_STREAMSIZEF_SOURCE:
506         /* cbSrcLength => cbDstLength */
507         if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
508             adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
509         {
510             nblocks = adss->cbSrcLength / (adsi->pwfxSrc->nBlockAlign * 1152);
511             if (nblocks == 0)
512                 return ACMERR_NOTPOSSIBLE;
513             if (adss->cbSrcLength % (DWORD)(adsi->pwfxSrc->nBlockAlign * 1152))
514                 /* Round block count up. */
515                 nblocks++;
516             adss->cbDstLength = 3000 + nblocks * (DWORD)(adsi->pwfxDst->nAvgBytesPerSec * 1152 / adsi->pwfxDst->nSamplesPerSec + 0.5);
517         }
518         else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_MPEGLAYER3 &&
519                  adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
520         {
521             nblocks = adss->cbSrcLength / (DWORD)(adsi->pwfxSrc->nAvgBytesPerSec * 1152 / adsi->pwfxSrc->nSamplesPerSec);
522             if (nblocks == 0)
523                 return ACMERR_NOTPOSSIBLE;
524             if (adss->cbSrcLength % (DWORD)(adsi->pwfxSrc->nAvgBytesPerSec * 1152 / adsi->pwfxSrc->nSamplesPerSec))
525                 /* Round block count up. */
526                 nblocks++;
527             adss->cbDstLength = nblocks * 1152 * adsi->pwfxDst->nBlockAlign;
528         }
529         else
530         {
531             return MMSYSERR_NOTSUPPORTED;
532         }
533         break;
534     default:
535         WARN("Unsupported query %08x\n", adss->fdwSize);
536         return MMSYSERR_NOTSUPPORTED;
537     }
538     return MMSYSERR_NOERROR;
539 }
540
541 /***********************************************************************
542  *           MPEG3_StreamConvert
543  *
544  */
545 static LRESULT MPEG3_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
546 {
547     AcmMpeg3Data*       aad = (AcmMpeg3Data*)adsi->dwDriver;
548     DWORD               nsrc = adsh->cbSrcLength;
549     DWORD               ndst = adsh->cbDstLength;
550
551     if (adsh->fdwConvert &
552         ~(ACM_STREAMCONVERTF_BLOCKALIGN|
553           ACM_STREAMCONVERTF_END|
554           ACM_STREAMCONVERTF_START))
555     {
556         FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh->fdwConvert);
557     }
558     /* ACM_STREAMCONVERTF_BLOCKALIGN
559      *  currently all conversions are block aligned, so do nothing for this flag
560      * ACM_STREAMCONVERTF_END
561      *  no pending data, so do nothing for this flag
562      */
563     if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START))
564     {
565         MPEG3_Reset(adsi, aad);
566     }
567
568     aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
569     adsh->cbSrcLengthUsed = nsrc;
570     adsh->cbDstLengthUsed = ndst;
571
572     return MMSYSERR_NOERROR;
573 }
574
575 /**************************************************************************
576  *                      MPEG3_DriverProc                        [exported]
577  */
578 LRESULT CALLBACK MPEG3_DriverProc(DWORD_PTR dwDevID, HDRVR hDriv, UINT wMsg,
579                                          LPARAM dwParam1, LPARAM dwParam2)
580 {
581     TRACE("(%08lx %p %04x %08lx %08lx);\n",
582           dwDevID, hDriv, wMsg, dwParam1, dwParam2);
583
584     switch (wMsg)
585     {
586     case DRV_LOAD:              return 1;
587     case DRV_FREE:              return 1;
588     case DRV_OPEN:              return MPEG3_drvOpen((LPSTR)dwParam1);
589     case DRV_CLOSE:             return MPEG3_drvClose(dwDevID);
590     case DRV_ENABLE:            return 1;
591     case DRV_DISABLE:           return 1;
592     case DRV_QUERYCONFIGURE:    return 1;
593     case DRV_CONFIGURE:         MessageBoxA(0, "MPEG3 filter !", "Wine Driver", MB_OK); return 1;
594     case DRV_INSTALL:           return DRVCNF_RESTART;
595     case DRV_REMOVE:            return DRVCNF_RESTART;
596
597     case ACMDM_DRIVER_NOTIFY:
598         /* no caching from other ACM drivers is done so far */
599         return MMSYSERR_NOERROR;
600
601     case ACMDM_DRIVER_DETAILS:
602         return MPEG3_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
603
604     case ACMDM_FORMATTAG_DETAILS:
605         return MPEG3_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
606
607     case ACMDM_FORMAT_DETAILS:
608         return MPEG3_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
609
610     case ACMDM_FORMAT_SUGGEST:
611         return MPEG3_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
612
613     case ACMDM_STREAM_OPEN:
614         return MPEG3_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
615
616     case ACMDM_STREAM_CLOSE:
617         return MPEG3_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
618
619     case ACMDM_STREAM_SIZE:
620         return MPEG3_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
621
622     case ACMDM_STREAM_CONVERT:
623         return MPEG3_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
624
625     case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
626     case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
627         /* this converter is not a hardware driver */
628     case ACMDM_FILTERTAG_DETAILS:
629     case ACMDM_FILTER_DETAILS:
630         /* this converter is not a filter */
631     case ACMDM_STREAM_RESET:
632         /* only needed for asynchronous driver... we aren't, so just say it */
633         return MMSYSERR_NOTSUPPORTED;
634     case ACMDM_STREAM_PREPARE:
635     case ACMDM_STREAM_UNPREPARE:
636         /* nothing special to do here... so don't do anything */
637         return MMSYSERR_NOERROR;
638
639     default:
640         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
641     }
642 }