1 /*
2 * Copyright 2002 Michael Günnewig
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
17 */
18
19 #include <assert.h>
20 #include <stdarg.h>
21
22 #include "windef.h"
23 #include "winbase.h"
24 #include "wingdi.h"
25 #include "winuser.h"
26 #include "winerror.h"
27 #include "mmsystem.h"
28 #include "vfw.h"
29 #include "msacm.h"
30
31 #include "avifile_private.h"
32
33 #include "wine/debug.h"
34
35 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
36
37 /***********************************************************************/
38
39 typedef struct _IAVIStreamImpl {
40 /* IUnknown stuff */
41 IAVIStream IAVIStream_iface;
42 LONG ref;
43
44 /* IAVIStream stuff */
45 PAVISTREAM pStream;
46 AVISTREAMINFOW sInfo;
47
48 HACMSTREAM has;
49
50 LPWAVEFORMATEX lpInFormat;
51 LONG cbInFormat;
52
53 LPWAVEFORMATEX lpOutFormat;
54 LONG cbOutFormat;
55
56 ACMSTREAMHEADER acmStreamHdr;
57 } IAVIStreamImpl;
58
59 /***********************************************************************/
60
61 #define CONVERT_STREAM_to_THIS(a) do { \
62 DWORD __bytes; \
63 acmStreamSize(This->has,*(a) * This->lpInFormat->nBlockAlign,\
64 &__bytes, ACM_STREAMSIZEF_SOURCE); \
65 *(a) = __bytes / This->lpOutFormat->nBlockAlign; } while(0)
66
67 #define CONVERT_THIS_to_STREAM(a) do { \
68 DWORD __bytes; \
69 acmStreamSize(This->has,*(a) * This->lpOutFormat->nBlockAlign,\
70 &__bytes, ACM_STREAMSIZEF_DESTINATION); \
71 *(a) = __bytes / This->lpInFormat->nBlockAlign; } while(0)
72
73 static HRESULT AVIFILE_OpenCompressor(IAVIStreamImpl *This)
74 {
75 HRESULT hr;
76
77 /* pre-conditions */
78 assert(This != NULL);
79 assert(This->pStream != NULL);
80
81 if (This->has != NULL)
82 return AVIERR_OK;
83
84 if (This->lpInFormat == NULL) {
85 /* decode or encode the data from pStream */
86 hr = AVIStreamFormatSize(This->pStream, This->sInfo.dwStart, &This->cbInFormat);
87 if (FAILED(hr))
88 return hr;
89 This->lpInFormat = HeapAlloc(GetProcessHeap(), 0, This->cbInFormat);
90 if (This->lpInFormat == NULL)
91 return AVIERR_MEMORY;
92
93 hr = IAVIStream_ReadFormat(This->pStream, This->sInfo.dwStart,
94 This->lpInFormat, &This->cbInFormat);
95 if (FAILED(hr))
96 return hr;
97
98 if (This->lpOutFormat == NULL) {
99 /* we must decode to default format */
100 This->cbOutFormat = sizeof(PCMWAVEFORMAT);
101 This->lpOutFormat = HeapAlloc(GetProcessHeap(), 0, This->cbOutFormat);
102 if (This->lpOutFormat == NULL)
103 return AVIERR_MEMORY;
104
105 This->lpOutFormat->wFormatTag = WAVE_FORMAT_PCM;
106 if (acmFormatSuggest(NULL, This->lpInFormat, This->lpOutFormat,
107 This->cbOutFormat, ACM_FORMATSUGGESTF_WFORMATTAG) != S_OK)
108 return AVIERR_NOCOMPRESSOR;
109 }
110 } else if (This->lpOutFormat == NULL)
111 return AVIERR_ERROR; /* To what should I encode? */
112
113 if (acmStreamOpen(&This->has, NULL, This->lpInFormat, This->lpOutFormat,
114 NULL, 0, 0, ACM_STREAMOPENF_NONREALTIME) != S_OK)
115 return AVIERR_NOCOMPRESSOR;
116
117 /* update AVISTREAMINFO structure */
118 This->sInfo.dwSampleSize = This->lpOutFormat->nBlockAlign;
119 This->sInfo.dwScale = This->lpOutFormat->nBlockAlign;
120 This->sInfo.dwRate = This->lpOutFormat->nAvgBytesPerSec;
121 This->sInfo.dwQuality = (DWORD)ICQUALITY_DEFAULT;
122 SetRectEmpty(&This->sInfo.rcFrame);
123
124 /* convert positions and sizes to output format */
125 CONVERT_STREAM_to_THIS(&This->sInfo.dwStart);
126 CONVERT_STREAM_to_THIS(&This->sInfo.dwLength);
127 CONVERT_STREAM_to_THIS(&This->sInfo.dwSuggestedBufferSize);
128
129 return AVIERR_OK;
130 }
131
132 static inline IAVIStreamImpl *impl_from_IAVIStream(IAVIStream *iface)
133 {
134 return CONTAINING_RECORD(iface, IAVIStreamImpl, IAVIStream_iface);
135 }
136
137 static HRESULT WINAPI ACMStream_fnQueryInterface(IAVIStream *iface,
138 REFIID refiid, LPVOID *obj)
139 {
140 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
141
142 TRACE("(%p,%s,%p)\n", iface, debugstr_guid(refiid), obj);
143
144 if (IsEqualGUID(&IID_IUnknown, refiid) ||
145 IsEqualGUID(&IID_IAVIStream, refiid)) {
146 *obj = This;
147 IAVIStream_AddRef(iface);
148
149 return S_OK;
150 }
151
152 return OLE_E_ENUM_NOMORE;
153 }
154
155 static ULONG WINAPI ACMStream_fnAddRef(IAVIStream *iface)
156 {
157 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
158 ULONG ref = InterlockedIncrement(&This->ref);
159
160 TRACE("(%p) -> %d\n", iface, ref);
161
162 /* also add reference to the nested stream */
163 if (This->pStream != NULL)
164 IAVIStream_AddRef(This->pStream);
165
166 return ref;
167 }
168
169 static ULONG WINAPI ACMStream_fnRelease(IAVIStream* iface)
170 {
171 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
172 ULONG ref = InterlockedDecrement(&This->ref);
173
174 TRACE("(%p) -> %d\n", iface, ref);
175
176 if (ref == 0) {
177 /* destruct */
178 if (This->has != NULL) {
179 if (This->acmStreamHdr.fdwStatus & ACMSTREAMHEADER_STATUSF_PREPARED)
180 acmStreamUnprepareHeader(This->has, &This->acmStreamHdr, 0);
181 acmStreamClose(This->has, 0);
182 This->has = NULL;
183 }
184 HeapFree(GetProcessHeap(), 0, This->acmStreamHdr.pbSrc);
185 This->acmStreamHdr.pbSrc = NULL;
186 HeapFree(GetProcessHeap(), 0, This->acmStreamHdr.pbDst);
187 This->acmStreamHdr.pbDst = NULL;
188 if (This->lpInFormat != NULL) {
189 HeapFree(GetProcessHeap(), 0, This->lpInFormat);
190 This->lpInFormat = NULL;
191 This->cbInFormat = 0;
192 }
193 if (This->lpOutFormat != NULL) {
194 HeapFree(GetProcessHeap(), 0, This->lpOutFormat);
195 This->lpOutFormat = NULL;
196 This->cbOutFormat = 0;
197 }
198 if (This->pStream != NULL) {
199 IAVIStream_Release(This->pStream);
200 This->pStream = NULL;
201 }
202 HeapFree(GetProcessHeap(), 0, This);
203
204 return 0;
205 }
206
207 /* also release reference to the nested stream */
208 if (This->pStream != NULL)
209 IAVIStream_Release(This->pStream);
210
211 return ref;
212 }
213
214 /* lParam1: PAVISTREAM
215 * lParam2: LPAVICOMPRESSOPTIONS -- even if doc's say LPWAVEFORMAT
216 */
217 static HRESULT WINAPI ACMStream_fnCreate(IAVIStream *iface, LPARAM lParam1,
218 LPARAM lParam2)
219 {
220 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
221
222 TRACE("(%p,0x%08lX,0x%08lX)\n", iface, lParam1, lParam2);
223
224 /* check for swapped parameters */
225 if ((LPVOID)lParam1 != NULL &&
226 ((LPAVICOMPRESSOPTIONS)lParam1)->fccType == streamtypeAUDIO) {
227 register LPARAM tmp = lParam1;
228
229 lParam1 = lParam2;
230 lParam2 = tmp;
231 }
232
233 if ((LPVOID)lParam1 == NULL)
234 return AVIERR_BADPARAM;
235
236 IAVIStream_Info((PAVISTREAM)lParam1, &This->sInfo, sizeof(This->sInfo));
237 if (This->sInfo.fccType != streamtypeAUDIO)
238 return AVIERR_ERROR; /* error in registry or AVIMakeCompressedStream */
239
240 This->sInfo.fccHandler = 0; /* be paranoid */
241
242 /* FIXME: check ACM version? Which version does we need? */
243
244 if ((LPVOID)lParam2 != NULL) {
245 /* We only need the format from the compress-options */
246 if (((LPAVICOMPRESSOPTIONS)lParam2)->fccType == streamtypeAUDIO)
247 lParam2 = (LPARAM)((LPAVICOMPRESSOPTIONS)lParam2)->lpFormat;
248
249 if (((LPWAVEFORMATEX)lParam2)->wFormatTag != WAVE_FORMAT_PCM)
250 This->cbOutFormat = sizeof(WAVEFORMATEX) + ((LPWAVEFORMATEX)lParam2)->cbSize;
251 else
252 This->cbOutFormat = sizeof(PCMWAVEFORMAT);
253
254 This->lpOutFormat = HeapAlloc(GetProcessHeap(), 0, This->cbOutFormat);
255 if (This->lpOutFormat == NULL)
256 return AVIERR_MEMORY;
257
258 memcpy(This->lpOutFormat, (LPVOID)lParam2, This->cbOutFormat);
259 } else {
260 This->lpOutFormat = NULL;
261 This->cbOutFormat = 0;
262 }
263
264 This->pStream = (PAVISTREAM)lParam1;
265 IAVIStream_AddRef(This->pStream);
266
267 return AVIERR_OK;
268 }
269
270 static HRESULT WINAPI ACMStream_fnInfo(IAVIStream *iface,LPAVISTREAMINFOW psi,
271 LONG size)
272 {
273 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
274
275 TRACE("(%p,%p,%d)\n", iface, psi, size);
276
277 if (psi == NULL)
278 return AVIERR_BADPARAM;
279 if (size < 0)
280 return AVIERR_BADSIZE;
281
282 /* Need codec to correct some values in structure */
283 if (This->has == NULL) {
284 HRESULT hr = AVIFILE_OpenCompressor(This);
285
286 if (FAILED(hr))
287 return hr;
288 }
289
290 memcpy(psi, &This->sInfo, min(size, (LONG)sizeof(This->sInfo)));
291
292 if (size < (LONG)sizeof(This->sInfo))
293 return AVIERR_BUFFERTOOSMALL;
294 return AVIERR_OK;
295 }
296
297 static LONG WINAPI ACMStream_fnFindSample(IAVIStream *iface, LONG pos,
298 LONG flags)
299 {
300 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
301
302 TRACE("(%p,%d,0x%08X)\n",iface,pos,flags);
303
304 if (flags & FIND_FROM_START) {
305 pos = This->sInfo.dwStart;
306 flags &= ~(FIND_FROM_START|FIND_PREV);
307 flags |= FIND_NEXT;
308 }
309
310 /* convert pos from our 'space' to This->pStream's one */
311 CONVERT_THIS_to_STREAM(&pos);
312
313 /* ask stream */
314 pos = IAVIStream_FindSample(This->pStream, pos, flags);
315
316 if (pos != -1) {
317 /* convert pos back to our 'space' if it's no size or physical pos */
318 if ((flags & FIND_RET) == 0)
319 CONVERT_STREAM_to_THIS(&pos);
320 }
321
322 return pos;
323 }
324
325 static HRESULT WINAPI ACMStream_fnReadFormat(IAVIStream *iface, LONG pos,
326 LPVOID format, LONG *formatsize)
327 {
328 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
329
330 TRACE("(%p,%d,%p,%p)\n", iface, pos, format, formatsize);
331
332 if (formatsize == NULL)
333 return AVIERR_BADPARAM;
334
335 if (This->has == NULL) {
336 HRESULT hr = AVIFILE_OpenCompressor(This);
337
338 if (FAILED(hr))
339 return hr;
340 }
341
342 /* only interested in needed buffersize? */
343 if (format == NULL || *formatsize <= 0) {
344 *formatsize = This->cbOutFormat;
345
346 return AVIERR_OK;
347 }
348
349 /* copy initial format (only as much as will fit) */
350 memcpy(format, This->lpOutFormat, min(*formatsize, This->cbOutFormat));
351 if (*formatsize < This->cbOutFormat) {
352 *formatsize = This->cbOutFormat;
353 return AVIERR_BUFFERTOOSMALL;
354 }
355
356 *formatsize = This->cbOutFormat;
357 return AVIERR_OK;
358 }
359
360 static HRESULT WINAPI ACMStream_fnSetFormat(IAVIStream *iface, LONG pos,
361 LPVOID format, LONG formatsize)
362 {
363 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
364
365 HRESULT hr;
366
367 TRACE("(%p,%d,%p,%d)\n", iface, pos, format, formatsize);
368
369 /* check parameters */
370 if (format == NULL || formatsize <= 0)
371 return AVIERR_BADPARAM;
372
373 /* Input format already known?
374 * Changing is unsupported, but be quiet if it's the same */
375 if (This->lpInFormat != NULL) {
376 if (This->cbInFormat != formatsize ||
377 memcmp(format, This->lpInFormat, formatsize) != 0)
378 return AVIERR_UNSUPPORTED;
379
380 return AVIERR_OK;
381 }
382
383 /* Does the nested stream support writing? */
384 if ((This->sInfo.dwCaps & AVIFILECAPS_CANWRITE) == 0)
385 return AVIERR_READONLY;
386
387 This->lpInFormat = HeapAlloc(GetProcessHeap(), 0, formatsize);
388 if (This->lpInFormat == NULL)
389 return AVIERR_MEMORY;
390 This->cbInFormat = formatsize;
391 memcpy(This->lpInFormat, format, formatsize);
392
393 /* initialize formats and get compressor */
394 hr = AVIFILE_OpenCompressor(This);
395 if (FAILED(hr))
396 return hr;
397
398 CONVERT_THIS_to_STREAM(&pos);
399
400 /* tell the nested stream the new format */
401 return IAVIStream_SetFormat(This->pStream, pos, This->lpOutFormat,
402 This->cbOutFormat);
403 }
404
405 static HRESULT WINAPI ACMStream_fnRead(IAVIStream *iface, LONG start,
406 LONG samples, LPVOID buffer,
407 LONG buffersize, LPLONG bytesread,
408 LPLONG samplesread)
409 {
410 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
411
412 HRESULT hr;
413 DWORD size;
414
415 TRACE("(%p,%d,%d,%p,%d,%p,%p)\n", iface, start, samples, buffer,
416 buffersize, bytesread, samplesread);
417
418 /* clear return parameters if given */
419 if (bytesread != NULL)
420 *bytesread = 0;
421 if (samplesread != NULL)
422 *samplesread = 0;
423
424 /* Do we have our compressor? */
425 if (This->has == NULL) {
426 hr = AVIFILE_OpenCompressor(This);
427
428 if (FAILED(hr))
429 return hr;
430 }
431
432 /* only need to pass through? */
433 if (This->cbInFormat == This->cbOutFormat &&
434 memcmp(This->lpInFormat, This->lpOutFormat, This->cbInFormat) == 0) {
435 return IAVIStream_Read(This->pStream, start, samples, buffer, buffersize,
436 bytesread, samplesread);
437 }
438
439 /* read as much as fit? */
440 if (samples == -1)
441 samples = buffersize / This->lpOutFormat->nBlockAlign;
442 /* limit to buffersize */
443 if (samples * This->lpOutFormat->nBlockAlign > buffersize)
444 samples = buffersize / This->lpOutFormat->nBlockAlign;
445
446 /* only return needed size? */
447 if (buffer == NULL || buffersize <= 0 || samples == 0) {
448 if (bytesread == NULL && samplesread == NULL)
449 return AVIERR_BADPARAM;
450
451 if (bytesread != NULL)
452 *bytesread = samples * This->lpOutFormat->nBlockAlign;
453 if (samplesread != NULL)
454 *samplesread = samples;
455
456 return AVIERR_OK;
457 }
458
459 /* map our positions to pStream positions */
460 CONVERT_THIS_to_STREAM(&start);
461
462 /* our needed internal buffersize */
463 size = samples * This->lpInFormat->nBlockAlign;
464
465 /* Need to free destination buffer used for writing? */
466 if (This->acmStreamHdr.pbDst != NULL) {
467 HeapFree(GetProcessHeap(), 0, This->acmStreamHdr.pbDst);
468 This->acmStreamHdr.pbDst = NULL;
469 This->acmStreamHdr.dwDstUser = 0;
470 }
471
472 /* need bigger source buffer? */
473 if (This->acmStreamHdr.pbSrc == NULL ||
474 This->acmStreamHdr.dwSrcUser < size) {
475 if (This->acmStreamHdr.pbSrc == NULL)
476 This->acmStreamHdr.pbSrc = HeapAlloc(GetProcessHeap(), 0, size);
477 else
478 This->acmStreamHdr.pbSrc = HeapReAlloc(GetProcessHeap(), 0, This->acmStreamHdr.pbSrc, size);
479 if (This->acmStreamHdr.pbSrc == NULL)
480 return AVIERR_MEMORY;
481 This->acmStreamHdr.dwSrcUser = size;
482 }
483
484 This->acmStreamHdr.cbStruct = sizeof(This->acmStreamHdr);
485 This->acmStreamHdr.cbSrcLengthUsed = 0;
486 This->acmStreamHdr.cbDstLengthUsed = 0;
487 This->acmStreamHdr.cbSrcLength = size;
488
489 /* read source data */
490 hr = IAVIStream_Read(This->pStream, start, -1, This->acmStreamHdr.pbSrc,
491 This->acmStreamHdr.cbSrcLength,
492 (LONG *)&This->acmStreamHdr.cbSrcLength, NULL);
493 if (FAILED(hr) || This->acmStreamHdr.cbSrcLength == 0)
494 return hr;
495
496 /* need to prepare stream? */
497 This->acmStreamHdr.pbDst = buffer;
498 This->acmStreamHdr.cbDstLength = buffersize;
499 if ((This->acmStreamHdr.fdwStatus & ACMSTREAMHEADER_STATUSF_PREPARED) == 0) {
500 if (acmStreamPrepareHeader(This->has, &This->acmStreamHdr, 0) != S_OK) {
501 This->acmStreamHdr.pbDst = NULL;
502 This->acmStreamHdr.cbDstLength = 0;
503 return AVIERR_COMPRESSOR;
504 }
505 }
506
507 /* now do the conversion */
508 /* FIXME: use ACM_CONVERTF_* flags */
509 if (acmStreamConvert(This->has, &This->acmStreamHdr, 0) != S_OK)
510 hr = AVIERR_COMPRESSOR;
511
512 This->acmStreamHdr.pbDst = NULL;
513 This->acmStreamHdr.cbDstLength = 0;
514
515 /* fill out return parameters if given */
516 if (bytesread != NULL)
517 *bytesread = This->acmStreamHdr.cbDstLengthUsed;
518 if (samplesread != NULL)
519 *samplesread =
520 This->acmStreamHdr.cbDstLengthUsed / This->lpOutFormat->nBlockAlign;
521
522 return hr;
523 }
524
525 static HRESULT WINAPI ACMStream_fnWrite(IAVIStream *iface, LONG start,
526 LONG samples, LPVOID buffer,
527 LONG buffersize, DWORD flags,
528 LPLONG sampwritten,
529 LPLONG byteswritten)
530 {
531 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
532
533 HRESULT hr;
534 ULONG size;
535
536 TRACE("(%p,%d,%d,%p,%d,0x%08X,%p,%p)\n", iface, start, samples,
537 buffer, buffersize, flags, sampwritten, byteswritten);
538
539 /* clear return parameters if given */
540 if (sampwritten != NULL)
541 *sampwritten = 0;
542 if (byteswritten != NULL)
543 *byteswritten = 0;
544
545 /* check parameters */
546 if (buffer == NULL && (buffersize > 0 || samples > 0))
547 return AVIERR_BADPARAM;
548
549 /* Have we write capability? */
550 if ((This->sInfo.dwCaps & AVIFILECAPS_CANWRITE) == 0)
551 return AVIERR_READONLY;
552
553 /* also need a compressor */
554 if (This->has == NULL)
555 return AVIERR_NOCOMPRESSOR;
556
557 /* map our sizes to pStream sizes */
558 size = buffersize;
559 CONVERT_THIS_to_STREAM(&size);
560 CONVERT_THIS_to_STREAM(&start);
561
562 /* no bytes to write? -- short circuit */
563 if (size == 0) {
564 return IAVIStream_Write(This->pStream, -1, samples, buffer, size,
565 flags, sampwritten, byteswritten);
566 }
567
568 /* Need to free source buffer used for reading? */
569 if (This->acmStreamHdr.pbSrc != NULL) {
570 HeapFree(GetProcessHeap(), 0, This->acmStreamHdr.pbSrc);
571 This->acmStreamHdr.pbSrc = NULL;
572 This->acmStreamHdr.dwSrcUser = 0;
573 }
574
575 /* Need bigger destination buffer? */
576 if (This->acmStreamHdr.pbDst == NULL ||
577 This->acmStreamHdr.dwDstUser < size) {
578 if (This->acmStreamHdr.pbDst == NULL)
579 This->acmStreamHdr.pbDst = HeapAlloc(GetProcessHeap(), 0, size);
580 else
581 This->acmStreamHdr.pbDst = HeapReAlloc(GetProcessHeap(), 0, This->acmStreamHdr.pbDst, size);
582 if (This->acmStreamHdr.pbDst == NULL)
583 return AVIERR_MEMORY;
584 This->acmStreamHdr.dwDstUser = size;
585 }
586 This->acmStreamHdr.cbStruct = sizeof(This->acmStreamHdr);
587 This->acmStreamHdr.cbSrcLengthUsed = 0;
588 This->acmStreamHdr.cbDstLengthUsed = 0;
589 This->acmStreamHdr.cbDstLength = This->acmStreamHdr.dwDstUser;
590
591 /* need to prepare stream? */
592 This->acmStreamHdr.pbSrc = buffer;
593 This->acmStreamHdr.cbSrcLength = buffersize;
594 if ((This->acmStreamHdr.fdwStatus & ACMSTREAMHEADER_STATUSF_PREPARED) == 0) {
595 if (acmStreamPrepareHeader(This->has, &This->acmStreamHdr, 0) != S_OK) {
596 This->acmStreamHdr.pbSrc = NULL;
597 This->acmStreamHdr.cbSrcLength = 0;
598 return AVIERR_COMPRESSOR;
599 }
600 }
601
602 /* now do the conversion */
603 /* FIXME: use ACM_CONVERTF_* flags */
604 if (acmStreamConvert(This->has, &This->acmStreamHdr, 0) != S_OK)
605 hr = AVIERR_COMPRESSOR;
606 else
607 hr = AVIERR_OK;
608
609 This->acmStreamHdr.pbSrc = NULL;
610 This->acmStreamHdr.cbSrcLength = 0;
611
612 if (FAILED(hr))
613 return hr;
614
615 return IAVIStream_Write(This->pStream,-1,This->acmStreamHdr.cbDstLengthUsed /
616 This->lpOutFormat->nBlockAlign,This->acmStreamHdr.pbDst,
617 This->acmStreamHdr.cbDstLengthUsed,flags,sampwritten,
618 byteswritten);
619 }
620
621 static HRESULT WINAPI ACMStream_fnDelete(IAVIStream *iface, LONG start,
622 LONG samples)
623 {
624 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
625
626 TRACE("(%p,%d,%d)\n", iface, start, samples);
627
628 /* check parameters */
629 if (start < 0 || samples < 0)
630 return AVIERR_BADPARAM;
631
632 /* Delete before start of stream? */
633 if ((DWORD)(start + samples) < This->sInfo.dwStart)
634 return AVIERR_OK;
635
636 /* Delete after end of stream? */
637 if ((DWORD)start > This->sInfo.dwLength)
638 return AVIERR_OK;
639
640 /* For the rest we need write capability */
641 if ((This->sInfo.dwCaps & AVIFILECAPS_CANWRITE) == 0)
642 return AVIERR_READONLY;
643
644 /* A compressor is also necessary */
645 if (This->has == NULL)
646 return AVIERR_NOCOMPRESSOR;
647
648 /* map our positions to pStream positions */
649 CONVERT_THIS_to_STREAM(&start);
650 CONVERT_THIS_to_STREAM(&samples);
651
652 return IAVIStream_Delete(This->pStream, start, samples);
653 }
654
655 static HRESULT WINAPI ACMStream_fnReadData(IAVIStream *iface, DWORD fcc,
656 LPVOID lp, LPLONG lpread)
657 {
658 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
659
660 TRACE("(%p,0x%08X,%p,%p)\n", iface, fcc, lp, lpread);
661
662 assert(This->pStream != NULL);
663
664 return IAVIStream_ReadData(This->pStream, fcc, lp, lpread);
665 }
666
667 static HRESULT WINAPI ACMStream_fnWriteData(IAVIStream *iface, DWORD fcc,
668 LPVOID lp, LONG size)
669 {
670 IAVIStreamImpl *This = impl_from_IAVIStream(iface);
671
672 TRACE("(%p,0x%08x,%p,%d)\n", iface, fcc, lp, size);
673
674 assert(This->pStream != NULL);
675
676 return IAVIStream_WriteData(This->pStream, fcc, lp, size);
677 }
678
679 static HRESULT WINAPI ACMStream_fnSetInfo(IAVIStream *iface,
680 LPAVISTREAMINFOW info, LONG infolen)
681 {
682 FIXME("(%p,%p,%d): stub\n", iface, info, infolen);
683
684 return E_FAIL;
685 }
686
687 static const struct IAVIStreamVtbl iacmst = {
688 ACMStream_fnQueryInterface,
689 ACMStream_fnAddRef,
690 ACMStream_fnRelease,
691 ACMStream_fnCreate,
692 ACMStream_fnInfo,
693 ACMStream_fnFindSample,
694 ACMStream_fnReadFormat,
695 ACMStream_fnSetFormat,
696 ACMStream_fnRead,
697 ACMStream_fnWrite,
698 ACMStream_fnDelete,
699 ACMStream_fnReadData,
700 ACMStream_fnWriteData,
701 ACMStream_fnSetInfo
702 };
703
704 HRESULT AVIFILE_CreateACMStream(REFIID riid, LPVOID *ppv)
705 {
706 IAVIStreamImpl *pstream;
707 HRESULT hr;
708
709 assert(riid != NULL && ppv != NULL);
710
711 *ppv = NULL;
712
713 pstream = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IAVIStreamImpl));
714 if (pstream == NULL)
715 return AVIERR_MEMORY;
716
717 pstream->IAVIStream_iface.lpVtbl = &iacmst;
718
719 hr = IAVIStream_QueryInterface(&pstream->IAVIStream_iface, riid, ppv);
720 if (FAILED(hr))
721 HeapFree(GetProcessHeap(), 0, pstream);
722
723 return hr;
724 }
725
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