2 * MPEG Layer 3 handling
4 * Copyright (C) 2002 Eric Pouech
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
37 #include "wine/debug.h"
39 WINE_DEFAULT_DEBUG_CHANNEL(mpeg3
);
41 /***********************************************************************
44 static LRESULT
MPEG3_drvOpen(LPCSTR str
)
49 /***********************************************************************
52 static LRESULT
MPEG3_drvClose(DWORD_PTR dwDevID
)
57 typedef struct tagAcmMpeg3Data
59 void (*convert
)(PACMDRVSTREAMINSTANCE adsi
,
60 const unsigned char*, LPDWORD
, unsigned char*, LPDWORD
);
64 /* table to list all supported formats... those are the basic ones. this
65 * also helps given a unique index to each of the supported formats
74 static const Format PCM_Formats
[] =
76 {1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000},
77 {1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025},
78 {1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050},
79 {1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100},
80 {1, 8, 48000}, {2, 8, 48000}, {1, 16, 48000}, {2, 16, 48000},
83 static const Format MPEG3_Formats
[] =
85 {1, 0, 8000}, {2, 0, 8000}, {1, 0, 11025}, {2, 0, 11025},
86 {1, 0, 22050}, {2, 0, 22050}, {1, 0, 44100}, {2, 0, 44100},
87 {1, 0, 48000}, {2, 0, 48000},
90 #define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
91 #define NUM_MPEG3_FORMATS (sizeof(MPEG3_Formats) / sizeof(MPEG3_Formats[0]))
93 /***********************************************************************
94 * MPEG3_GetFormatIndex
96 static DWORD
MPEG3_GetFormatIndex(LPWAVEFORMATEX wfx
)
101 switch (wfx
->wFormatTag
)
103 case WAVE_FORMAT_PCM
:
104 hi
= NUM_PCM_FORMATS
;
107 case WAVE_FORMAT_MPEGLAYER3
:
108 hi
= NUM_MPEG3_FORMATS
;
109 fmts
= MPEG3_Formats
;
115 for (i
= 0; i
< hi
; i
++)
117 if (wfx
->nChannels
== fmts
[i
].nChannels
&&
118 wfx
->nSamplesPerSec
== fmts
[i
].rate
&&
119 wfx
->wBitsPerSample
== fmts
[i
].nBits
)
126 static DWORD
get_num_buffered_bytes(struct mpstr
*mp
)
129 struct buf
* p
= mp
->tail
;
131 numBuff
+= p
->size
- p
->pos
;
137 static void mp3_horse(PACMDRVSTREAMINSTANCE adsi
,
138 const unsigned char* src
, LPDWORD nsrc
,
139 unsigned char* dst
, LPDWORD ndst
)
141 AcmMpeg3Data
* amd
= (AcmMpeg3Data
*)adsi
->dwDriver
;
144 DWORD buffered_before
;
145 DWORD buffered_during
;
146 DWORD buffered_after
;
148 /* Skip leading ID v3 header */
149 if (amd
->mp
.fsizeold
== -1 && !strncmp("ID3", (char*)src
, 3))
152 const char *header
= (char *)src
;
154 TRACE("Found ID3 v2.%d.%d\n", header
[3], header
[4]);
155 length
+= (header
[6] & 0x7F) << 21;
156 length
+= (header
[7] & 0x7F) << 14;
157 length
+= (header
[8] & 0x7F) << 7;
158 length
+= (header
[9] & 0x7F);
159 TRACE("Length: %u\n", length
);
165 buffered_before
= get_num_buffered_bytes(&amd
->mp
);
166 ret
= decodeMP3(&amd
->mp
, src
, *nsrc
, dst
, *ndst
, &size
);
167 buffered_during
= get_num_buffered_bytes(&amd
->mp
);
175 if (*ndst
- dpos
< 4608) break;
176 ret
= decodeMP3(&amd
->mp
, NULL
, 0,
177 dst
+ dpos
, *ndst
- dpos
, &size
);
178 } while (ret
== MP3_OK
);
181 buffered_after
= get_num_buffered_bytes(&amd
->mp
);
182 TRACE("before %d put %d during %d after %d\n", buffered_before
, *nsrc
, buffered_during
, buffered_after
);
184 *nsrc
-= buffered_after
;
185 ClearMP3Buffer(&amd
->mp
);
188 /***********************************************************************
189 * MPEG3_DriverDetails
192 static LRESULT
MPEG3_DriverDetails(PACMDRIVERDETAILSW add
)
194 add
->fccType
= ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC
;
195 add
->fccComp
= ACMDRIVERDETAILS_FCCCOMP_UNDEFINED
;
198 add
->vdwACM
= 0x01000000;
199 add
->vdwDriver
= 0x01000000;
200 add
->fdwSupport
= ACMDRIVERDETAILS_SUPPORTF_CODEC
;
201 add
->cFormatTags
= 2; /* PCM, MPEG3 */
202 add
->cFilterTags
= 0;
204 MultiByteToWideChar( CP_ACP
, 0, "WINE-MPEG3", -1,
205 add
->szShortName
, sizeof(add
->szShortName
)/sizeof(WCHAR
) );
206 MultiByteToWideChar( CP_ACP
, 0, "Wine MPEG3 decoder", -1,
207 add
->szLongName
, sizeof(add
->szLongName
)/sizeof(WCHAR
) );
208 MultiByteToWideChar( CP_ACP
, 0, "Brought to you by the Wine team (based on mpglib by Michael Hipp)...", -1,
209 add
->szCopyright
, sizeof(add
->szCopyright
)/sizeof(WCHAR
) );
210 MultiByteToWideChar( CP_ACP
, 0, "Refer to LICENSE file", -1,
211 add
->szLicensing
, sizeof(add
->szLicensing
)/sizeof(WCHAR
) );
212 add
->szFeatures
[0] = 0;
214 return MMSYSERR_NOERROR
;
217 /***********************************************************************
218 * MPEG3_FormatTagDetails
221 static LRESULT
MPEG3_FormatTagDetails(PACMFORMATTAGDETAILSW aftd
, DWORD dwQuery
)
223 static const WCHAR szPcm
[]={'P','C','M',0};
224 static const WCHAR szMpeg3
[]={'M','P','e','g','3',0};
228 case ACM_FORMATTAGDETAILSF_INDEX
:
229 if (aftd
->dwFormatTagIndex
>= 2) return ACMERR_NOTPOSSIBLE
;
231 case ACM_FORMATTAGDETAILSF_LARGESTSIZE
:
232 if (aftd
->dwFormatTag
== WAVE_FORMAT_UNKNOWN
)
234 aftd
->dwFormatTagIndex
= 1; /* WAVE_FORMAT_MPEGLAYER3 is bigger than PCM */
238 case ACM_FORMATTAGDETAILSF_FORMATTAG
:
239 switch (aftd
->dwFormatTag
)
241 case WAVE_FORMAT_PCM
: aftd
->dwFormatTagIndex
= 0; break;
242 case WAVE_FORMAT_MPEGLAYER3
: aftd
->dwFormatTagIndex
= 1; break;
243 default: return ACMERR_NOTPOSSIBLE
;
247 WARN("Unsupported query %08x\n", dwQuery
);
248 return MMSYSERR_NOTSUPPORTED
;
251 aftd
->fdwSupport
= ACMDRIVERDETAILS_SUPPORTF_CODEC
;
252 switch (aftd
->dwFormatTagIndex
)
255 aftd
->dwFormatTag
= WAVE_FORMAT_PCM
;
256 aftd
->cbFormatSize
= sizeof(PCMWAVEFORMAT
);
257 aftd
->cStandardFormats
= NUM_PCM_FORMATS
;
258 lstrcpyW(aftd
->szFormatTag
, szPcm
);
261 aftd
->dwFormatTag
= WAVE_FORMAT_MPEGLAYER3
;
262 aftd
->cbFormatSize
= sizeof(MPEGLAYER3WAVEFORMAT
);
263 aftd
->cStandardFormats
= NUM_MPEG3_FORMATS
;
264 lstrcpyW(aftd
->szFormatTag
, szMpeg3
);
267 return MMSYSERR_NOERROR
;
270 static void fill_in_wfx(unsigned cbwfx
, WAVEFORMATEX
* wfx
, unsigned bit_rate
)
272 MPEGLAYER3WAVEFORMAT
* mp3wfx
= (MPEGLAYER3WAVEFORMAT
*)wfx
;
274 wfx
->nAvgBytesPerSec
= bit_rate
/ 8;
275 if (cbwfx
>= sizeof(WAVEFORMATEX
))
276 wfx
->cbSize
= sizeof(MPEGLAYER3WAVEFORMAT
) - sizeof(WAVEFORMATEX
);
277 if (cbwfx
>= sizeof(MPEGLAYER3WAVEFORMAT
))
279 mp3wfx
->wID
= MPEGLAYER3_ID_MPEG
;
280 mp3wfx
->fdwFlags
= MPEGLAYER3_FLAG_PADDING_OFF
;
281 mp3wfx
->nBlockSize
= (bit_rate
* 144) / wfx
->nSamplesPerSec
;
282 mp3wfx
->nFramesPerBlock
= 1;
283 mp3wfx
->nCodecDelay
= 0x0571;
287 /***********************************************************************
288 * MPEG3_FormatDetails
291 static LRESULT
MPEG3_FormatDetails(PACMFORMATDETAILSW afd
, DWORD dwQuery
)
295 case ACM_FORMATDETAILSF_FORMAT
:
296 if (MPEG3_GetFormatIndex(afd
->pwfx
) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE
;
298 case ACM_FORMATDETAILSF_INDEX
:
299 afd
->pwfx
->wFormatTag
= afd
->dwFormatTag
;
300 switch (afd
->dwFormatTag
)
302 case WAVE_FORMAT_PCM
:
303 if (afd
->dwFormatIndex
>= NUM_PCM_FORMATS
) return ACMERR_NOTPOSSIBLE
;
304 afd
->pwfx
->nChannels
= PCM_Formats
[afd
->dwFormatIndex
].nChannels
;
305 afd
->pwfx
->nSamplesPerSec
= PCM_Formats
[afd
->dwFormatIndex
].rate
;
306 afd
->pwfx
->wBitsPerSample
= PCM_Formats
[afd
->dwFormatIndex
].nBits
;
307 /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
308 * afd->pwfx->cbSize = 0;
310 afd
->pwfx
->nBlockAlign
=
311 (afd
->pwfx
->nChannels
* afd
->pwfx
->wBitsPerSample
) / 8;
312 afd
->pwfx
->nAvgBytesPerSec
=
313 afd
->pwfx
->nSamplesPerSec
* afd
->pwfx
->nBlockAlign
;
315 case WAVE_FORMAT_MPEGLAYER3
:
316 if (afd
->dwFormatIndex
>= NUM_MPEG3_FORMATS
) return ACMERR_NOTPOSSIBLE
;
317 afd
->pwfx
->nChannels
= MPEG3_Formats
[afd
->dwFormatIndex
].nChannels
;
318 afd
->pwfx
->nSamplesPerSec
= MPEG3_Formats
[afd
->dwFormatIndex
].rate
;
319 afd
->pwfx
->wBitsPerSample
= MPEG3_Formats
[afd
->dwFormatIndex
].nBits
;
320 afd
->pwfx
->nBlockAlign
= 1;
321 fill_in_wfx(afd
->cbwfx
, afd
->pwfx
, 192000);
324 WARN("Unsupported tag %08x\n", afd
->dwFormatTag
);
325 return MMSYSERR_INVALPARAM
;
329 WARN("Unsupported query %08x\n", dwQuery
);
330 return MMSYSERR_NOTSUPPORTED
;
332 afd
->fdwSupport
= ACMDRIVERDETAILS_SUPPORTF_CODEC
;
333 afd
->szFormat
[0] = 0; /* let MSACM format this for us... */
335 return MMSYSERR_NOERROR
;
338 /***********************************************************************
339 * MPEG3_FormatSuggest
342 static LRESULT
MPEG3_FormatSuggest(PACMDRVFORMATSUGGEST adfs
)
345 if (adfs
->cbwfxSrc
< sizeof(PCMWAVEFORMAT
) ||
346 adfs
->cbwfxDst
< sizeof(PCMWAVEFORMAT
) ||
347 MPEG3_GetFormatIndex(adfs
->pwfxSrc
) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE
;
348 /* FIXME: should do those tests against the real size (according to format tag */
350 /* If no suggestion for destination, then copy source value */
351 if (!(adfs
->fdwSuggest
& ACM_FORMATSUGGESTF_NCHANNELS
))
352 adfs
->pwfxDst
->nChannels
= adfs
->pwfxSrc
->nChannels
;
353 if (!(adfs
->fdwSuggest
& ACM_FORMATSUGGESTF_NSAMPLESPERSEC
))
354 adfs
->pwfxDst
->nSamplesPerSec
= adfs
->pwfxSrc
->nSamplesPerSec
;
356 if (!(adfs
->fdwSuggest
& ACM_FORMATSUGGESTF_WBITSPERSAMPLE
))
358 if (adfs
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_PCM
)
359 adfs
->pwfxDst
->wBitsPerSample
= 4;
361 adfs
->pwfxDst
->wBitsPerSample
= 16;
363 if (!(adfs
->fdwSuggest
& ACM_FORMATSUGGESTF_WFORMATTAG
))
365 if (adfs
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_PCM
)
366 adfs
->pwfxDst
->wFormatTag
= WAVE_FORMAT_MPEGLAYER3
;
368 adfs
->pwfxDst
->wFormatTag
= WAVE_FORMAT_PCM
;
371 /* check if result is ok */
372 if (MPEG3_GetFormatIndex(adfs
->pwfxDst
) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE
;
374 /* recompute other values */
375 switch (adfs
->pwfxDst
->wFormatTag
)
377 case WAVE_FORMAT_PCM
:
378 adfs
->pwfxDst
->nBlockAlign
= (adfs
->pwfxDst
->nChannels
* adfs
->pwfxDst
->wBitsPerSample
) / 8;
379 adfs
->pwfxDst
->nAvgBytesPerSec
= adfs
->pwfxDst
->nSamplesPerSec
* adfs
->pwfxDst
->nBlockAlign
;
381 case WAVE_FORMAT_MPEGLAYER3
:
382 adfs
->pwfxDst
->nBlockAlign
= 1;
383 fill_in_wfx(adfs
->cbwfxDst
, adfs
->pwfxDst
, 192000);
390 return MMSYSERR_NOERROR
;
393 /***********************************************************************
397 static void MPEG3_Reset(PACMDRVSTREAMINSTANCE adsi
, AcmMpeg3Data
* aad
)
399 ClearMP3Buffer(&aad
->mp
);
403 /***********************************************************************
407 static LRESULT
MPEG3_StreamOpen(PACMDRVSTREAMINSTANCE adsi
)
411 assert(!(adsi
->fdwOpen
& ACM_STREAMOPENF_ASYNC
));
413 if (MPEG3_GetFormatIndex(adsi
->pwfxSrc
) == 0xFFFFFFFF ||
414 MPEG3_GetFormatIndex(adsi
->pwfxDst
) == 0xFFFFFFFF)
415 return ACMERR_NOTPOSSIBLE
;
417 aad
= HeapAlloc(GetProcessHeap(), 0, sizeof(AcmMpeg3Data
));
418 if (aad
== 0) return MMSYSERR_NOMEM
;
420 adsi
->dwDriver
= (DWORD
)aad
;
422 if (adsi
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_PCM
&&
423 adsi
->pwfxDst
->wFormatTag
== WAVE_FORMAT_PCM
)
427 else if (adsi
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_MPEGLAYER3
&&
428 adsi
->pwfxDst
->wFormatTag
== WAVE_FORMAT_PCM
)
430 /* resampling or mono <=> stereo not available
431 * MPEG3 algo only define 16 bit per sample output
433 if (adsi
->pwfxSrc
->nSamplesPerSec
!= adsi
->pwfxDst
->nSamplesPerSec
||
434 adsi
->pwfxSrc
->nChannels
!= adsi
->pwfxDst
->nChannels
||
435 adsi
->pwfxDst
->wBitsPerSample
!= 16)
437 aad
->convert
= mp3_horse
;
441 else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
442 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_MPEGLAYER3)
445 MPEG3_Reset(adsi
, aad
);
447 return MMSYSERR_NOERROR
;
450 HeapFree(GetProcessHeap(), 0, aad
);
452 return MMSYSERR_NOTSUPPORTED
;
455 /***********************************************************************
459 static LRESULT
MPEG3_StreamClose(PACMDRVSTREAMINSTANCE adsi
)
461 ClearMP3Buffer(&((AcmMpeg3Data
*)adsi
->dwDriver
)->mp
);
462 HeapFree(GetProcessHeap(), 0, (void*)adsi
->dwDriver
);
463 return MMSYSERR_NOERROR
;
466 /***********************************************************************
470 static LRESULT
MPEG3_StreamSize(PACMDRVSTREAMINSTANCE adsi
, PACMDRVSTREAMSIZE adss
)
472 switch (adss
->fdwSize
)
474 case ACM_STREAMSIZEF_DESTINATION
:
475 /* cbDstLength => cbSrcLength */
476 if (adsi
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_PCM
&&
477 adsi
->pwfxDst
->wFormatTag
== WAVE_FORMAT_MPEGLAYER3
)
479 /* don't take block overhead into account, doesn't matter too much */
480 adss
->cbSrcLength
= adss
->cbDstLength
* 12;
482 else if (adsi
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_MPEGLAYER3
&&
483 adsi
->pwfxDst
->wFormatTag
== WAVE_FORMAT_PCM
)
485 FIXME("misses the block header overhead\n");
486 adss
->cbSrcLength
= 256 + adss
->cbDstLength
/ 12;
490 return MMSYSERR_NOTSUPPORTED
;
493 case ACM_STREAMSIZEF_SOURCE
:
494 /* cbSrcLength => cbDstLength */
495 if (adsi
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_PCM
&&
496 adsi
->pwfxDst
->wFormatTag
== WAVE_FORMAT_MPEGLAYER3
)
498 FIXME("misses the block header overhead\n");
499 adss
->cbDstLength
= 256 + adss
->cbSrcLength
/ 12;
501 else if (adsi
->pwfxSrc
->wFormatTag
== WAVE_FORMAT_MPEGLAYER3
&&
502 adsi
->pwfxDst
->wFormatTag
== WAVE_FORMAT_PCM
)
504 /* don't take block overhead into account, doesn't matter too much */
505 adss
->cbDstLength
= adss
->cbSrcLength
* 12;
509 return MMSYSERR_NOTSUPPORTED
;
513 WARN("Unsupported query %08x\n", adss
->fdwSize
);
514 return MMSYSERR_NOTSUPPORTED
;
516 return MMSYSERR_NOERROR
;
519 /***********************************************************************
520 * MPEG3_StreamConvert
523 static LRESULT
MPEG3_StreamConvert(PACMDRVSTREAMINSTANCE adsi
, PACMDRVSTREAMHEADER adsh
)
525 AcmMpeg3Data
* aad
= (AcmMpeg3Data
*)adsi
->dwDriver
;
526 DWORD nsrc
= adsh
->cbSrcLength
;
527 DWORD ndst
= adsh
->cbDstLength
;
529 if (adsh
->fdwConvert
&
530 ~(ACM_STREAMCONVERTF_BLOCKALIGN
|
531 ACM_STREAMCONVERTF_END
|
532 ACM_STREAMCONVERTF_START
))
534 FIXME("Unsupported fdwConvert (%08x), ignoring it\n", adsh
->fdwConvert
);
536 /* ACM_STREAMCONVERTF_BLOCKALIGN
537 * currently all conversions are block aligned, so do nothing for this flag
538 * ACM_STREAMCONVERTF_END
539 * no pending data, so do nothing for this flag
541 if ((adsh
->fdwConvert
& ACM_STREAMCONVERTF_START
))
543 MPEG3_Reset(adsi
, aad
);
546 aad
->convert(adsi
, adsh
->pbSrc
, &nsrc
, adsh
->pbDst
, &ndst
);
547 adsh
->cbSrcLengthUsed
= nsrc
;
548 adsh
->cbDstLengthUsed
= ndst
;
550 return MMSYSERR_NOERROR
;
553 /**************************************************************************
554 * MPEG3_DriverProc [exported]
556 LRESULT CALLBACK
MPEG3_DriverProc(DWORD_PTR dwDevID
, HDRVR hDriv
, UINT wMsg
,
557 LPARAM dwParam1
, LPARAM dwParam2
)
559 TRACE("(%08lx %p %04x %08lx %08lx);\n",
560 dwDevID
, hDriv
, wMsg
, dwParam1
, dwParam2
);
564 case DRV_LOAD
: return 1;
565 case DRV_FREE
: return 1;
566 case DRV_OPEN
: return MPEG3_drvOpen((LPSTR
)dwParam1
);
567 case DRV_CLOSE
: return MPEG3_drvClose(dwDevID
);
568 case DRV_ENABLE
: return 1;
569 case DRV_DISABLE
: return 1;
570 case DRV_QUERYCONFIGURE
: return 1;
571 case DRV_CONFIGURE
: MessageBoxA(0, "MPEG3 filter !", "Wine Driver", MB_OK
); return 1;
572 case DRV_INSTALL
: return DRVCNF_RESTART
;
573 case DRV_REMOVE
: return DRVCNF_RESTART
;
575 case ACMDM_DRIVER_NOTIFY
:
576 /* no caching from other ACM drivers is done so far */
577 return MMSYSERR_NOERROR
;
579 case ACMDM_DRIVER_DETAILS
:
580 return MPEG3_DriverDetails((PACMDRIVERDETAILSW
)dwParam1
);
582 case ACMDM_FORMATTAG_DETAILS
:
583 return MPEG3_FormatTagDetails((PACMFORMATTAGDETAILSW
)dwParam1
, dwParam2
);
585 case ACMDM_FORMAT_DETAILS
:
586 return MPEG3_FormatDetails((PACMFORMATDETAILSW
)dwParam1
, dwParam2
);
588 case ACMDM_FORMAT_SUGGEST
:
589 return MPEG3_FormatSuggest((PACMDRVFORMATSUGGEST
)dwParam1
);
591 case ACMDM_STREAM_OPEN
:
592 return MPEG3_StreamOpen((PACMDRVSTREAMINSTANCE
)dwParam1
);
594 case ACMDM_STREAM_CLOSE
:
595 return MPEG3_StreamClose((PACMDRVSTREAMINSTANCE
)dwParam1
);
597 case ACMDM_STREAM_SIZE
:
598 return MPEG3_StreamSize((PACMDRVSTREAMINSTANCE
)dwParam1
, (PACMDRVSTREAMSIZE
)dwParam2
);
600 case ACMDM_STREAM_CONVERT
:
601 return MPEG3_StreamConvert((PACMDRVSTREAMINSTANCE
)dwParam1
, (PACMDRVSTREAMHEADER
)dwParam2
);
603 case ACMDM_HARDWARE_WAVE_CAPS_INPUT
:
604 case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT
:
605 /* this converter is not a hardware driver */
606 case ACMDM_FILTERTAG_DETAILS
:
607 case ACMDM_FILTER_DETAILS
:
608 /* this converter is not a filter */
609 case ACMDM_STREAM_RESET
:
610 /* only needed for asynchronous driver... we aren't, so just say it */
611 return MMSYSERR_NOTSUPPORTED
;
612 case ACMDM_STREAM_PREPARE
:
613 case ACMDM_STREAM_UNPREPARE
:
614 /* nothing special to do here... so don't do anything */
615 return MMSYSERR_NOERROR
;
618 return DefDriverProc(dwDevID
, hDriv
, wMsg
, dwParam1
, dwParam2
);