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- Merge from trunk up to r45543
[reactos.git] / dll / win32 / avifil32 / avifile.c
1 /*
2 * Copyright 1999 Marcus Meissner
3 * Copyright 2002-2003 Michael Günnewig
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18 */
19
20 /* TODO:
21 * - IAVIStreaming interface is missing for the IAVIStreamImpl
22 * - IAVIStream_fnFindSample: FIND_INDEX isn't supported.
23 * - IAVIStream_fnReadFormat: formatchanges aren't read in.
24 * - IAVIStream_fnDelete: a stub.
25 * - IAVIStream_fnSetInfo: a stub.
26 * - make thread safe
27 *
28 * KNOWN Bugs:
29 * - native version can hangup when reading a file generated with this DLL.
30 * When index is missing it works, but index seems to be okay.
31 */
32
33 #include <assert.h>
34 #include <stdarg.h>
35
36 #include "windef.h"
37 #include "winbase.h"
38 #include "wingdi.h"
39 #include "winuser.h"
40 #include "winnls.h"
41 #include "winerror.h"
42 #include "mmsystem.h"
43 #include "vfw.h"
44
45 #include "avifile_private.h"
46 #include "extrachunk.h"
47
48 #include "wine/unicode.h"
49 #include "wine/debug.h"
50
51 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
52
53 #ifndef IDX_PER_BLOCK
54 #define IDX_PER_BLOCK 2730
55 #endif
56
57 /***********************************************************************/
58
59 static HRESULT WINAPI IAVIFile_fnQueryInterface(IAVIFile* iface,REFIID refiid,LPVOID *obj);
60 static ULONG WINAPI IAVIFile_fnAddRef(IAVIFile* iface);
61 static ULONG WINAPI IAVIFile_fnRelease(IAVIFile* iface);
62 static HRESULT WINAPI IAVIFile_fnInfo(IAVIFile*iface,AVIFILEINFOW*afi,LONG size);
63 static HRESULT WINAPI IAVIFile_fnGetStream(IAVIFile*iface,PAVISTREAM*avis,DWORD fccType,LONG lParam);
64 static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile*iface,PAVISTREAM*avis,AVISTREAMINFOW*asi);
65 static HRESULT WINAPI IAVIFile_fnWriteData(IAVIFile*iface,DWORD ckid,LPVOID lpData,LONG size);
66 static HRESULT WINAPI IAVIFile_fnReadData(IAVIFile*iface,DWORD ckid,LPVOID lpData,LONG *size);
67 static HRESULT WINAPI IAVIFile_fnEndRecord(IAVIFile*iface);
68 static HRESULT WINAPI IAVIFile_fnDeleteStream(IAVIFile*iface,DWORD fccType,LONG lParam);
69
70 static const struct IAVIFileVtbl iavift = {
71 IAVIFile_fnQueryInterface,
72 IAVIFile_fnAddRef,
73 IAVIFile_fnRelease,
74 IAVIFile_fnInfo,
75 IAVIFile_fnGetStream,
76 IAVIFile_fnCreateStream,
77 IAVIFile_fnWriteData,
78 IAVIFile_fnReadData,
79 IAVIFile_fnEndRecord,
80 IAVIFile_fnDeleteStream
81 };
82
83 static HRESULT WINAPI IPersistFile_fnQueryInterface(IPersistFile*iface,REFIID refiid,LPVOID*obj);
84 static ULONG WINAPI IPersistFile_fnAddRef(IPersistFile*iface);
85 static ULONG WINAPI IPersistFile_fnRelease(IPersistFile*iface);
86 static HRESULT WINAPI IPersistFile_fnGetClassID(IPersistFile*iface,CLSID*pClassID);
87 static HRESULT WINAPI IPersistFile_fnIsDirty(IPersistFile*iface);
88 static HRESULT WINAPI IPersistFile_fnLoad(IPersistFile*iface,LPCOLESTR pszFileName,DWORD dwMode);
89 static HRESULT WINAPI IPersistFile_fnSave(IPersistFile*iface,LPCOLESTR pszFileName,BOOL fRemember);
90 static HRESULT WINAPI IPersistFile_fnSaveCompleted(IPersistFile*iface,LPCOLESTR pszFileName);
91 static HRESULT WINAPI IPersistFile_fnGetCurFile(IPersistFile*iface,LPOLESTR*ppszFileName);
92
93 static const struct IPersistFileVtbl ipersistft = {
94 IPersistFile_fnQueryInterface,
95 IPersistFile_fnAddRef,
96 IPersistFile_fnRelease,
97 IPersistFile_fnGetClassID,
98 IPersistFile_fnIsDirty,
99 IPersistFile_fnLoad,
100 IPersistFile_fnSave,
101 IPersistFile_fnSaveCompleted,
102 IPersistFile_fnGetCurFile
103 };
104
105 static HRESULT WINAPI IAVIStream_fnQueryInterface(IAVIStream*iface,REFIID refiid,LPVOID *obj);
106 static ULONG WINAPI IAVIStream_fnAddRef(IAVIStream*iface);
107 static ULONG WINAPI IAVIStream_fnRelease(IAVIStream* iface);
108 static HRESULT WINAPI IAVIStream_fnCreate(IAVIStream*iface,LPARAM lParam1,LPARAM lParam2);
109 static HRESULT WINAPI IAVIStream_fnInfo(IAVIStream*iface,AVISTREAMINFOW *psi,LONG size);
110 static LONG WINAPI IAVIStream_fnFindSample(IAVIStream*iface,LONG pos,LONG flags);
111 static HRESULT WINAPI IAVIStream_fnReadFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG *formatsize);
112 static HRESULT WINAPI IAVIStream_fnSetFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG formatsize);
113 static HRESULT WINAPI IAVIStream_fnRead(IAVIStream*iface,LONG start,LONG samples,LPVOID buffer,LONG buffersize,LONG *bytesread,LONG *samplesread);
114 static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream*iface,LONG start,LONG samples,LPVOID buffer,LONG buffersize,DWORD flags,LONG *sampwritten,LONG *byteswritten);
115 static HRESULT WINAPI IAVIStream_fnDelete(IAVIStream*iface,LONG start,LONG samples);
116 static HRESULT WINAPI IAVIStream_fnReadData(IAVIStream*iface,DWORD fcc,LPVOID lp,LONG *lpread);
117 static HRESULT WINAPI IAVIStream_fnWriteData(IAVIStream*iface,DWORD fcc,LPVOID lp,LONG size);
118 static HRESULT WINAPI IAVIStream_fnSetInfo(IAVIStream*iface,AVISTREAMINFOW*info,LONG infolen);
119
120 static const struct IAVIStreamVtbl iavist = {
121 IAVIStream_fnQueryInterface,
122 IAVIStream_fnAddRef,
123 IAVIStream_fnRelease,
124 IAVIStream_fnCreate,
125 IAVIStream_fnInfo,
126 IAVIStream_fnFindSample,
127 IAVIStream_fnReadFormat,
128 IAVIStream_fnSetFormat,
129 IAVIStream_fnRead,
130 IAVIStream_fnWrite,
131 IAVIStream_fnDelete,
132 IAVIStream_fnReadData,
133 IAVIStream_fnWriteData,
134 IAVIStream_fnSetInfo
135 };
136
137 typedef struct _IAVIFileImpl IAVIFileImpl;
138
139 typedef struct _IPersistFileImpl {
140 /* IUnknown stuff */
141 const IPersistFileVtbl *lpVtbl;
142
143 /* IPersistFile stuff */
144 IAVIFileImpl *paf;
145 } IPersistFileImpl;
146
147 typedef struct _IAVIStreamImpl {
148 /* IUnknown stuff */
149 const IAVIStreamVtbl *lpVtbl;
150 LONG ref;
151
152 /* IAVIStream stuff */
153 IAVIFileImpl *paf;
154 DWORD nStream; /* the n-th stream in file */
155 AVISTREAMINFOW sInfo;
156
157 LPVOID lpFormat;
158 DWORD cbFormat;
159
160 LPVOID lpHandlerData;
161 DWORD cbHandlerData;
162
163 EXTRACHUNKS extra;
164
165 LPDWORD lpBuffer;
166 DWORD cbBuffer; /* size of lpBuffer */
167 DWORD dwCurrentFrame; /* frame/block currently in lpBuffer */
168
169 LONG lLastFrame; /* last correct index in idxFrames */
170 AVIINDEXENTRY *idxFrames;
171 DWORD nIdxFrames; /* upper index limit of idxFrames */
172 AVIINDEXENTRY *idxFmtChanges;
173 DWORD nIdxFmtChanges; /* upper index limit of idxFmtChanges */
174 } IAVIStreamImpl;
175
176 struct _IAVIFileImpl {
177 /* IUnknown stuff */
178 const IAVIFileVtbl *lpVtbl;
179 LONG ref;
180
181 /* IAVIFile stuff... */
182 IPersistFileImpl iPersistFile;
183
184 AVIFILEINFOW fInfo;
185 IAVIStreamImpl *ppStreams[MAX_AVISTREAMS];
186
187 EXTRACHUNKS fileextra;
188
189 DWORD dwMoviChunkPos; /* some stuff for saving ... */
190 DWORD dwIdxChunkPos;
191 DWORD dwNextFramePos;
192 DWORD dwInitialFrames;
193
194 MMCKINFO ckLastRecord;
195 AVIINDEXENTRY *idxRecords; /* won't be updated while loading */
196 DWORD nIdxRecords; /* current fill level */
197 DWORD cbIdxRecords; /* size of idxRecords */
198
199 /* IPersistFile stuff ... */
200 HMMIO hmmio;
201 LPWSTR szFileName;
202 UINT uMode;
203 BOOL fDirty;
204 };
205
206 /***********************************************************************/
207
208 static HRESULT AVIFILE_AddFrame(IAVIStreamImpl *This, DWORD ckid, DWORD size,
209 DWORD offset, DWORD flags);
210 static HRESULT AVIFILE_AddRecord(IAVIFileImpl *This);
211 static DWORD AVIFILE_ComputeMoviStart(IAVIFileImpl *This);
212 static void AVIFILE_ConstructAVIStream(IAVIFileImpl *paf, DWORD nr,
213 const AVISTREAMINFOW *asi);
214 static void AVIFILE_DestructAVIStream(IAVIStreamImpl *This);
215 static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This);
216 static HRESULT AVIFILE_LoadIndex(const IAVIFileImpl *This, DWORD size, DWORD offset);
217 static HRESULT AVIFILE_ParseIndex(const IAVIFileImpl *This, AVIINDEXENTRY *lp,
218 LONG count, DWORD pos, BOOL *bAbsolute);
219 static HRESULT AVIFILE_ReadBlock(IAVIStreamImpl *This, DWORD start,
220 LPVOID buffer, DWORD size);
221 static void AVIFILE_SamplesToBlock(const IAVIStreamImpl *This, LPLONG pos,
222 LPLONG offset);
223 static HRESULT AVIFILE_SaveFile(IAVIFileImpl *This);
224 static HRESULT AVIFILE_SaveIndex(const IAVIFileImpl *This);
225 static ULONG AVIFILE_SearchStream(const IAVIFileImpl *This, DWORD fccType,
226 LONG lSkip);
227 static void AVIFILE_UpdateInfo(IAVIFileImpl *This);
228 static HRESULT AVIFILE_WriteBlock(IAVIStreamImpl *This, DWORD block,
229 FOURCC ckid, DWORD flags, LPCVOID buffer,
230 LONG size);
231
232 HRESULT AVIFILE_CreateAVIFile(REFIID riid, LPVOID *ppv)
233 {
234 IAVIFileImpl *pfile;
235 HRESULT hr;
236
237 assert(riid != NULL && ppv != NULL);
238
239 *ppv = NULL;
240
241 pfile = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IAVIFileImpl));
242 if (pfile == NULL)
243 return AVIERR_MEMORY;
244
245 pfile->lpVtbl = &iavift;
246 pfile->ref = 0;
247 pfile->iPersistFile.lpVtbl = &ipersistft;
248 pfile->iPersistFile.paf = pfile;
249
250 hr = IAVIFile_QueryInterface((IAVIFile*)pfile, riid, ppv);
251 if (FAILED(hr))
252 HeapFree(GetProcessHeap(), 0, pfile);
253
254 return hr;
255 }
256
257 static HRESULT WINAPI IAVIFile_fnQueryInterface(IAVIFile *iface, REFIID refiid,
258 LPVOID *obj)
259 {
260 IAVIFileImpl *This = (IAVIFileImpl *)iface;
261
262 TRACE("(%p,%s,%p)\n", This, debugstr_guid(refiid), obj);
263
264 if (IsEqualGUID(&IID_IUnknown, refiid) ||
265 IsEqualGUID(&IID_IAVIFile, refiid)) {
266 *obj = iface;
267 IAVIFile_AddRef(iface);
268
269 return S_OK;
270 } else if (IsEqualGUID(&IID_IPersistFile, refiid)) {
271 *obj = &This->iPersistFile;
272 IAVIFile_AddRef(iface);
273
274 return S_OK;
275 }
276
277 return OLE_E_ENUM_NOMORE;
278 }
279
280 static ULONG WINAPI IAVIFile_fnAddRef(IAVIFile *iface)
281 {
282 IAVIFileImpl *This = (IAVIFileImpl *)iface;
283 ULONG ref = InterlockedIncrement(&This->ref);
284
285 TRACE("(%p) -> %d\n", iface, ref);
286
287 return ref;
288 }
289
290 static ULONG WINAPI IAVIFile_fnRelease(IAVIFile *iface)
291 {
292 IAVIFileImpl *This = (IAVIFileImpl *)iface;
293 UINT i;
294 ULONG ref = InterlockedDecrement(&This->ref);
295
296 TRACE("(%p) -> %d\n", iface, ref);
297
298 if (!ref) {
299 if (This->fDirty) {
300 /* need to write headers to file */
301 AVIFILE_SaveFile(This);
302 }
303
304 for (i = 0; i < This->fInfo.dwStreams; i++) {
305 if (This->ppStreams[i] != NULL) {
306 if (This->ppStreams[i]->ref != 0) {
307 ERR(": someone has still %u reference to stream %u (%p)!\n",
308 This->ppStreams[i]->ref, i, This->ppStreams[i]);
309 }
310 AVIFILE_DestructAVIStream(This->ppStreams[i]);
311 HeapFree(GetProcessHeap(), 0, This->ppStreams[i]);
312 This->ppStreams[i] = NULL;
313 }
314 }
315
316 if (This->idxRecords != NULL) {
317 HeapFree(GetProcessHeap(), 0, This->idxRecords);
318 This->idxRecords = NULL;
319 This->nIdxRecords = 0;
320 }
321
322 if (This->fileextra.lp != NULL) {
323 HeapFree(GetProcessHeap(), 0, This->fileextra.lp);
324 This->fileextra.lp = NULL;
325 This->fileextra.cb = 0;
326 }
327
328 HeapFree(GetProcessHeap(), 0, This->szFileName);
329 This->szFileName = NULL;
330
331 if (This->hmmio != NULL) {
332 mmioClose(This->hmmio, 0);
333 This->hmmio = NULL;
334 }
335
336 HeapFree(GetProcessHeap(), 0, This);
337 }
338 return ref;
339 }
340
341 static HRESULT WINAPI IAVIFile_fnInfo(IAVIFile *iface, LPAVIFILEINFOW afi,
342 LONG size)
343 {
344 IAVIFileImpl *This = (IAVIFileImpl *)iface;
345
346 TRACE("(%p,%p,%d)\n",iface,afi,size);
347
348 if (afi == NULL)
349 return AVIERR_BADPARAM;
350 if (size < 0)
351 return AVIERR_BADSIZE;
352
353 AVIFILE_UpdateInfo(This);
354
355 memcpy(afi, &This->fInfo, min((DWORD)size, sizeof(This->fInfo)));
356
357 if ((DWORD)size < sizeof(This->fInfo))
358 return AVIERR_BUFFERTOOSMALL;
359 return AVIERR_OK;
360 }
361
362 static HRESULT WINAPI IAVIFile_fnGetStream(IAVIFile *iface, PAVISTREAM *avis,
363 DWORD fccType, LONG lParam)
364 {
365 IAVIFileImpl *This = (IAVIFileImpl *)iface;
366
367 ULONG nStream;
368
369 TRACE("(%p,%p,0x%08X,%d)\n", iface, avis, fccType, lParam);
370
371 if (avis == NULL || lParam < 0)
372 return AVIERR_BADPARAM;
373
374 nStream = AVIFILE_SearchStream(This, fccType, lParam);
375
376 /* Does the requested stream exist? */
377 if (nStream < This->fInfo.dwStreams &&
378 This->ppStreams[nStream] != NULL) {
379 *avis = (PAVISTREAM)This->ppStreams[nStream];
380 IAVIStream_AddRef(*avis);
381
382 return AVIERR_OK;
383 }
384
385 /* Sorry, but the specified stream doesn't exist */
386 return AVIERR_NODATA;
387 }
388
389 static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile *iface,PAVISTREAM *avis,
390 LPAVISTREAMINFOW asi)
391 {
392 IAVIFileImpl *This = (IAVIFileImpl *)iface;
393
394 DWORD n;
395
396 TRACE("(%p,%p,%p)\n", iface, avis, asi);
397
398 /* check parameters */
399 if (avis == NULL || asi == NULL)
400 return AVIERR_BADPARAM;
401
402 *avis = NULL;
403
404 /* Does the user have write permission? */
405 if ((This->uMode & MMIO_RWMODE) == 0)
406 return AVIERR_READONLY;
407
408 /* Can we add another stream? */
409 n = This->fInfo.dwStreams;
410 if (n >= MAX_AVISTREAMS || This->dwMoviChunkPos != 0) {
411 /* already reached max nr of streams
412 * or have already written frames to disk */
413 return AVIERR_UNSUPPORTED;
414 }
415
416 /* check AVISTREAMINFO for some really needed things */
417 if (asi->fccType == 0 || asi->dwScale == 0 || asi->dwRate == 0)
418 return AVIERR_BADFORMAT;
419
420 /* now it seems to be save to add the stream */
421 assert(This->ppStreams[n] == NULL);
422 This->ppStreams[n] = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
423 sizeof(IAVIStreamImpl));
424 if (This->ppStreams[n] == NULL)
425 return AVIERR_MEMORY;
426
427 /* initialize the new allocated stream */
428 AVIFILE_ConstructAVIStream(This, n, asi);
429
430 This->fInfo.dwStreams++;
431 This->fDirty = TRUE;
432
433 /* update our AVIFILEINFO structure */
434 AVIFILE_UpdateInfo(This);
435
436 /* return it */
437 *avis = (PAVISTREAM)This->ppStreams[n];
438 IAVIStream_AddRef(*avis);
439
440 return AVIERR_OK;
441 }
442
443 static HRESULT WINAPI IAVIFile_fnWriteData(IAVIFile *iface, DWORD ckid,
444 LPVOID lpData, LONG size)
445 {
446 IAVIFileImpl *This = (IAVIFileImpl *)iface;
447
448 TRACE("(%p,0x%08X,%p,%d)\n", iface, ckid, lpData, size);
449
450 /* check parameters */
451 if (lpData == NULL)
452 return AVIERR_BADPARAM;
453 if (size < 0)
454 return AVIERR_BADSIZE;
455
456 /* Do we have write permission? */
457 if ((This->uMode & MMIO_RWMODE) == 0)
458 return AVIERR_READONLY;
459
460 This->fDirty = TRUE;
461
462 return WriteExtraChunk(&This->fileextra, ckid, lpData, size);
463 }
464
465 static HRESULT WINAPI IAVIFile_fnReadData(IAVIFile *iface, DWORD ckid,
466 LPVOID lpData, LONG *size)
467 {
468 IAVIFileImpl *This = (IAVIFileImpl *)iface;
469
470 TRACE("(%p,0x%08X,%p,%p)\n", iface, ckid, lpData, size);
471
472 return ReadExtraChunk(&This->fileextra, ckid, lpData, size);
473 }
474
475 static HRESULT WINAPI IAVIFile_fnEndRecord(IAVIFile *iface)
476 {
477 IAVIFileImpl *This = (IAVIFileImpl *)iface;
478
479 TRACE("(%p)\n",iface);
480
481 if ((This->uMode & MMIO_RWMODE) == 0)
482 return AVIERR_READONLY;
483
484 This->fDirty = TRUE;
485
486 /* no frames written to any stream? -- compute start of 'movi'-chunk */
487 if (This->dwMoviChunkPos == 0)
488 AVIFILE_ComputeMoviStart(This);
489
490 This->fInfo.dwFlags |= AVIFILEINFO_ISINTERLEAVED;
491
492 /* already written frames to any stream, ... */
493 if (This->ckLastRecord.dwFlags & MMIO_DIRTY) {
494 /* close last record */
495 if (mmioAscend(This->hmmio, &This->ckLastRecord, 0) != 0)
496 return AVIERR_FILEWRITE;
497
498 AVIFILE_AddRecord(This);
499
500 if (This->fInfo.dwSuggestedBufferSize < This->ckLastRecord.cksize + 3 * sizeof(DWORD))
501 This->fInfo.dwSuggestedBufferSize = This->ckLastRecord.cksize + 3 * sizeof(DWORD);
502 }
503
504 /* write out a new record into file, but don't close it */
505 This->ckLastRecord.cksize = 0;
506 This->ckLastRecord.fccType = listtypeAVIRECORD;
507 if (mmioSeek(This->hmmio, This->dwNextFramePos, SEEK_SET) == -1)
508 return AVIERR_FILEWRITE;
509 if (mmioCreateChunk(This->hmmio, &This->ckLastRecord, MMIO_CREATELIST) != 0)
510 return AVIERR_FILEWRITE;
511 This->dwNextFramePos += 3 * sizeof(DWORD);
512
513 return AVIERR_OK;
514 }
515
516 static HRESULT WINAPI IAVIFile_fnDeleteStream(IAVIFile *iface, DWORD fccType,
517 LONG lParam)
518 {
519 IAVIFileImpl *This = (IAVIFileImpl *)iface;
520
521 ULONG nStream;
522
523 TRACE("(%p,0x%08X,%d)\n", iface, fccType, lParam);
524
525 /* check parameter */
526 if (lParam < 0)
527 return AVIERR_BADPARAM;
528
529 /* Have user write permissions? */
530 if ((This->uMode & MMIO_RWMODE) == 0)
531 return AVIERR_READONLY;
532
533 nStream = AVIFILE_SearchStream(This, fccType, lParam);
534
535 /* Does the requested stream exist? */
536 if (nStream < This->fInfo.dwStreams &&
537 This->ppStreams[nStream] != NULL) {
538 /* ... so delete it now */
539 HeapFree(GetProcessHeap(), 0, This->ppStreams[nStream]);
540
541 if (This->fInfo.dwStreams - nStream > 0)
542 memcpy(This->ppStreams + nStream, This->ppStreams + nStream + 1,
543 (This->fInfo.dwStreams - nStream) * sizeof(IAVIStreamImpl*));
544
545 This->ppStreams[This->fInfo.dwStreams] = NULL;
546 This->fInfo.dwStreams--;
547 This->fDirty = TRUE;
548
549 /* This->fInfo will be updated further when asked for */
550 return AVIERR_OK;
551 } else
552 return AVIERR_NODATA;
553 }
554
555 /***********************************************************************/
556
557 static HRESULT WINAPI IPersistFile_fnQueryInterface(IPersistFile *iface,
558 REFIID refiid, LPVOID *obj)
559 {
560 IPersistFileImpl *This = (IPersistFileImpl *)iface;
561
562 assert(This->paf != NULL);
563
564 return IAVIFile_QueryInterface((PAVIFILE)This->paf, refiid, obj);
565 }
566
567 static ULONG WINAPI IPersistFile_fnAddRef(IPersistFile *iface)
568 {
569 IPersistFileImpl *This = (IPersistFileImpl *)iface;
570
571 assert(This->paf != NULL);
572
573 return IAVIFile_AddRef((PAVIFILE)This->paf);
574 }
575
576 static ULONG WINAPI IPersistFile_fnRelease(IPersistFile *iface)
577 {
578 IPersistFileImpl *This = (IPersistFileImpl *)iface;
579
580 assert(This->paf != NULL);
581
582 return IAVIFile_Release((PAVIFILE)This->paf);
583 }
584
585 static HRESULT WINAPI IPersistFile_fnGetClassID(IPersistFile *iface,
586 LPCLSID pClassID)
587 {
588 TRACE("(%p,%p)\n", iface, pClassID);
589
590 if (pClassID == NULL)
591 return AVIERR_BADPARAM;
592
593 *pClassID = CLSID_AVIFile;
594
595 return AVIERR_OK;
596 }
597
598 static HRESULT WINAPI IPersistFile_fnIsDirty(IPersistFile *iface)
599 {
600 IPersistFileImpl *This = (IPersistFileImpl *)iface;
601
602 TRACE("(%p)\n", iface);
603
604 assert(This->paf != NULL);
605
606 return (This->paf->fDirty ? S_OK : S_FALSE);
607 }
608
609 static HRESULT WINAPI IPersistFile_fnLoad(IPersistFile *iface,
610 LPCOLESTR pszFileName, DWORD dwMode)
611 {
612 IPersistFileImpl *This = (IPersistFileImpl *)iface;
613
614 int len;
615
616 TRACE("(%p,%s,0x%08X)\n", iface, debugstr_w(pszFileName), dwMode);
617
618 /* check parameter */
619 if (pszFileName == NULL)
620 return AVIERR_BADPARAM;
621
622 assert(This->paf != NULL);
623 if (This->paf->hmmio != NULL)
624 return AVIERR_ERROR; /* No reuse of this object for another file! */
625
626 /* remember mode and name */
627 This->paf->uMode = dwMode;
628
629 len = lstrlenW(pszFileName) + 1;
630 This->paf->szFileName = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
631 if (This->paf->szFileName == NULL)
632 return AVIERR_MEMORY;
633 lstrcpyW(This->paf->szFileName, pszFileName);
634
635 /* try to open the file */
636 This->paf->hmmio = mmioOpenW(This->paf->szFileName, NULL,
637 MMIO_ALLOCBUF | dwMode);
638 if (This->paf->hmmio == NULL) {
639 /* mmioOpenW not in native DLLs of Win9x -- try mmioOpenA */
640 LPSTR szFileName;
641
642 len = WideCharToMultiByte(CP_ACP, 0, This->paf->szFileName, -1,
643 NULL, 0, NULL, NULL);
644 szFileName = HeapAlloc(GetProcessHeap(), 0, len * sizeof(CHAR));
645 if (szFileName == NULL)
646 return AVIERR_MEMORY;
647
648 WideCharToMultiByte(CP_ACP, 0, This->paf->szFileName, -1, szFileName,
649 len, NULL, NULL);
650
651 This->paf->hmmio = mmioOpenA(szFileName, NULL, MMIO_ALLOCBUF | dwMode);
652 HeapFree(GetProcessHeap(), 0, szFileName);
653 if (This->paf->hmmio == NULL)
654 return AVIERR_FILEOPEN;
655 }
656
657 /* should we create a new file? */
658 if (dwMode & OF_CREATE) {
659 memset(& This->paf->fInfo, 0, sizeof(This->paf->fInfo));
660 This->paf->fInfo.dwFlags = AVIFILEINFO_HASINDEX | AVIFILEINFO_TRUSTCKTYPE;
661
662 return AVIERR_OK;
663 } else
664 return AVIFILE_LoadFile(This->paf);
665 }
666
667 static HRESULT WINAPI IPersistFile_fnSave(IPersistFile *iface,
668 LPCOLESTR pszFileName,BOOL fRemember)
669 {
670 TRACE("(%p,%s,%d)\n", iface, debugstr_w(pszFileName), fRemember);
671
672 /* We write directly to disk, so nothing to do. */
673
674 return AVIERR_OK;
675 }
676
677 static HRESULT WINAPI IPersistFile_fnSaveCompleted(IPersistFile *iface,
678 LPCOLESTR pszFileName)
679 {
680 TRACE("(%p,%s)\n", iface, debugstr_w(pszFileName));
681
682 /* We write directly to disk, so nothing to do. */
683
684 return AVIERR_OK;
685 }
686
687 static HRESULT WINAPI IPersistFile_fnGetCurFile(IPersistFile *iface,
688 LPOLESTR *ppszFileName)
689 {
690 IPersistFileImpl *This = (IPersistFileImpl *)iface;
691
692 TRACE("(%p,%p)\n", iface, ppszFileName);
693
694 if (ppszFileName == NULL)
695 return AVIERR_BADPARAM;
696
697 *ppszFileName = NULL;
698
699 assert(This->paf != NULL);
700
701 if (This->paf->szFileName != NULL) {
702 int len = lstrlenW(This->paf->szFileName) + 1;
703
704 *ppszFileName = CoTaskMemAlloc(len * sizeof(WCHAR));
705 if (*ppszFileName == NULL)
706 return AVIERR_MEMORY;
707
708 strcpyW(*ppszFileName, This->paf->szFileName);
709 }
710
711 return AVIERR_OK;
712 }
713
714 /***********************************************************************/
715
716 static HRESULT WINAPI IAVIStream_fnQueryInterface(IAVIStream *iface,
717 REFIID refiid, LPVOID *obj)
718 {
719 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
720
721 TRACE("(%p,%s,%p)\n", iface, debugstr_guid(refiid), obj);
722
723 if (IsEqualGUID(&IID_IUnknown, refiid) ||
724 IsEqualGUID(&IID_IAVIStream, refiid)) {
725 *obj = This;
726 IAVIStream_AddRef(iface);
727
728 return S_OK;
729 }
730 /* FIXME: IAVIStreaming interface */
731
732 return OLE_E_ENUM_NOMORE;
733 }
734
735 static ULONG WINAPI IAVIStream_fnAddRef(IAVIStream *iface)
736 {
737 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
738 ULONG ref = InterlockedIncrement(&This->ref);
739
740 TRACE("(%p) -> %d\n", iface, ref);
741
742 /* also add ref to parent, so that it doesn't kill us */
743 if (This->paf != NULL)
744 IAVIFile_AddRef((PAVIFILE)This->paf);
745
746 return ref;
747 }
748
749 static ULONG WINAPI IAVIStream_fnRelease(IAVIStream* iface)
750 {
751 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
752 ULONG ref = InterlockedDecrement(&This->ref);
753
754 TRACE("(%p) -> %d\n", iface, ref);
755
756 if (This->paf != NULL)
757 IAVIFile_Release((PAVIFILE)This->paf);
758
759 return ref;
760 }
761
762 static HRESULT WINAPI IAVIStream_fnCreate(IAVIStream *iface, LPARAM lParam1,
763 LPARAM lParam2)
764 {
765 TRACE("(%p,0x%08lX,0x%08lX)\n", iface, lParam1, lParam2);
766
767 /* This IAVIStream interface needs an AVIFile */
768 return AVIERR_UNSUPPORTED;
769 }
770
771 static HRESULT WINAPI IAVIStream_fnInfo(IAVIStream *iface,LPAVISTREAMINFOW psi,
772 LONG size)
773 {
774 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
775
776 TRACE("(%p,%p,%d)\n", iface, psi, size);
777
778 if (psi == NULL)
779 return AVIERR_BADPARAM;
780 if (size < 0)
781 return AVIERR_BADSIZE;
782
783 memcpy(psi, &This->sInfo, min((DWORD)size, sizeof(This->sInfo)));
784
785 if ((DWORD)size < sizeof(This->sInfo))
786 return AVIERR_BUFFERTOOSMALL;
787 return AVIERR_OK;
788 }
789
790 static LONG WINAPI IAVIStream_fnFindSample(IAVIStream *iface, LONG pos,
791 LONG flags)
792 {
793 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
794
795 LONG offset = 0;
796
797 TRACE("(%p,%d,0x%08X)\n",iface,pos,flags);
798
799 if (flags & FIND_FROM_START) {
800 pos = This->sInfo.dwStart;
801 flags &= ~(FIND_FROM_START|FIND_PREV);
802 flags |= FIND_NEXT;
803 }
804
805 if (This->sInfo.dwSampleSize != 0) {
806 /* convert samples into block number with offset */
807 AVIFILE_SamplesToBlock(This, &pos, &offset);
808 }
809
810 if (flags & FIND_TYPE) {
811 if (flags & FIND_KEY) {
812 while (0 <= pos && pos <= This->lLastFrame) {
813 if (This->idxFrames[pos].dwFlags & AVIIF_KEYFRAME)
814 goto RETURN_FOUND;
815
816 if (flags & FIND_NEXT)
817 pos++;
818 else
819 pos--;
820 };
821 } else if (flags & FIND_ANY) {
822 while (0 <= pos && pos <= This->lLastFrame) {
823 if (This->idxFrames[pos].dwChunkLength > 0)
824 goto RETURN_FOUND;
825
826 if (flags & FIND_NEXT)
827 pos++;
828 else
829 pos--;
830
831 };
832 } else if ((flags & FIND_FORMAT) && This->idxFmtChanges != NULL &&
833 This->sInfo.fccType == streamtypeVIDEO) {
834 if (flags & FIND_NEXT) {
835 ULONG n;
836
837 for (n = 0; n < This->sInfo.dwFormatChangeCount; n++)
838 if (This->idxFmtChanges[n].ckid >= pos) {
839 pos = This->idxFmtChanges[n].ckid;
840 goto RETURN_FOUND;
841 }
842 } else {
843 LONG n;
844
845 for (n = (LONG)This->sInfo.dwFormatChangeCount; n >= 0; n--) {
846 if (This->idxFmtChanges[n].ckid <= pos) {
847 pos = This->idxFmtChanges[n].ckid;
848 goto RETURN_FOUND;
849 }
850 }
851
852 if (pos > (LONG)This->sInfo.dwStart)
853 return 0; /* format changes always for first frame */
854 }
855 }
856
857 return -1;
858 }
859
860 RETURN_FOUND:
861 if (pos < (LONG)This->sInfo.dwStart)
862 return -1;
863
864 switch (flags & FIND_RET) {
865 case FIND_LENGTH:
866 /* physical size */
867 pos = This->idxFrames[pos].dwChunkLength;
868 break;
869 case FIND_OFFSET:
870 /* physical position */
871 pos = This->idxFrames[pos].dwChunkOffset + 2 * sizeof(DWORD)
872 + offset * This->sInfo.dwSampleSize;
873 break;
874 case FIND_SIZE:
875 /* logical size */
876 if (This->sInfo.dwSampleSize)
877 pos = This->sInfo.dwSampleSize;
878 else
879 pos = 1;
880 break;
881 case FIND_INDEX:
882 FIXME(": FIND_INDEX flag is not supported!\n");
883 /* This is an index in the index-table on disc. */
884 break;
885 }; /* else logical position */
886
887 return pos;
888 }
889
890 static HRESULT WINAPI IAVIStream_fnReadFormat(IAVIStream *iface, LONG pos,
891 LPVOID format, LONG *formatsize)
892 {
893 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
894
895 TRACE("(%p,%d,%p,%p)\n", iface, pos, format, formatsize);
896
897 if (formatsize == NULL)
898 return AVIERR_BADPARAM;
899
900 /* only interested in needed buffersize? */
901 if (format == NULL || *formatsize <= 0) {
902 *formatsize = This->cbFormat;
903
904 return AVIERR_OK;
905 }
906
907 /* copy initial format (only as much as will fit) */
908 memcpy(format, This->lpFormat, min(*(DWORD*)formatsize, This->cbFormat));
909 if (*(DWORD*)formatsize < This->cbFormat) {
910 *formatsize = This->cbFormat;
911 return AVIERR_BUFFERTOOSMALL;
912 }
913
914 /* Could format change? When yes will it change? */
915 if ((This->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
916 pos > This->sInfo.dwStart) {
917 LONG lLastFmt;
918
919 lLastFmt = IAVIStream_fnFindSample(iface, pos, FIND_FORMAT|FIND_PREV);
920 if (lLastFmt > 0) {
921 FIXME(": need to read formatchange for %d -- unimplemented!\n",lLastFmt);
922 }
923 }
924
925 *formatsize = This->cbFormat;
926 return AVIERR_OK;
927 }
928
929 static HRESULT WINAPI IAVIStream_fnSetFormat(IAVIStream *iface, LONG pos,
930 LPVOID format, LONG formatsize)
931 {
932 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
933
934 LPBITMAPINFOHEADER lpbiNew = format;
935
936 TRACE("(%p,%d,%p,%d)\n", iface, pos, format, formatsize);
937
938 /* check parameters */
939 if (format == NULL || formatsize <= 0)
940 return AVIERR_BADPARAM;
941
942 /* Do we have write permission? */
943 if ((This->paf->uMode & MMIO_RWMODE) == 0)
944 return AVIERR_READONLY;
945
946 /* can only set format before frame is written! */
947 if (This->lLastFrame > pos)
948 return AVIERR_UNSUPPORTED;
949
950 /* initial format or a formatchange? */
951 if (This->lpFormat == NULL) {
952 /* initial format */
953 if (This->paf->dwMoviChunkPos != 0)
954 return AVIERR_ERROR; /* user has used API in wrong sequence! */
955
956 This->lpFormat = HeapAlloc(GetProcessHeap(), 0, formatsize);
957 if (This->lpFormat == NULL)
958 return AVIERR_MEMORY;
959 This->cbFormat = formatsize;
960
961 memcpy(This->lpFormat, format, formatsize);
962
963 /* update some infos about stream */
964 if (This->sInfo.fccType == streamtypeVIDEO) {
965 LONG lDim;
966
967 lDim = This->sInfo.rcFrame.right - This->sInfo.rcFrame.left;
968 if (lDim < lpbiNew->biWidth)
969 This->sInfo.rcFrame.right = This->sInfo.rcFrame.left + lpbiNew->biWidth;
970 lDim = This->sInfo.rcFrame.bottom - This->sInfo.rcFrame.top;
971 if (lDim < lpbiNew->biHeight)
972 This->sInfo.rcFrame.bottom = This->sInfo.rcFrame.top + lpbiNew->biHeight;
973 } else if (This->sInfo.fccType == streamtypeAUDIO)
974 This->sInfo.dwSampleSize = ((LPWAVEFORMATEX)This->lpFormat)->nBlockAlign;
975
976 return AVIERR_OK;
977 } else {
978 MMCKINFO ck;
979 LPBITMAPINFOHEADER lpbiOld = This->lpFormat;
980 RGBQUAD *rgbNew = (RGBQUAD*)((LPBYTE)lpbiNew + lpbiNew->biSize);
981 AVIPALCHANGE *lppc = NULL;
982 UINT n;
983
984 /* perhaps format change, check it ... */
985 if (This->cbFormat != formatsize)
986 return AVIERR_UNSUPPORTED;
987
988 /* no format change, only the initial one */
989 if (memcmp(This->lpFormat, format, formatsize) == 0)
990 return AVIERR_OK;
991
992 /* check that's only the palette, which changes */
993 if (lpbiOld->biSize != lpbiNew->biSize ||
994 lpbiOld->biWidth != lpbiNew->biWidth ||
995 lpbiOld->biHeight != lpbiNew->biHeight ||
996 lpbiOld->biPlanes != lpbiNew->biPlanes ||
997 lpbiOld->biBitCount != lpbiNew->biBitCount ||
998 lpbiOld->biCompression != lpbiNew->biCompression ||
999 lpbiOld->biClrUsed != lpbiNew->biClrUsed)
1000 return AVIERR_UNSUPPORTED;
1001
1002 This->sInfo.dwFlags |= AVISTREAMINFO_FORMATCHANGES;
1003
1004 /* simply say all colors have changed */
1005 ck.ckid = MAKEAVICKID(cktypePALchange, This->nStream);
1006 ck.cksize = 2 * sizeof(WORD) + lpbiOld->biClrUsed * sizeof(PALETTEENTRY);
1007 lppc = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1008 if (lppc == NULL)
1009 return AVIERR_MEMORY;
1010
1011 lppc->bFirstEntry = 0;
1012 lppc->bNumEntries = (lpbiOld->biClrUsed < 256 ? lpbiOld->biClrUsed : 0);
1013 lppc->wFlags = 0;
1014 for (n = 0; n < lpbiOld->biClrUsed; n++) {
1015 lppc->peNew[n].peRed = rgbNew[n].rgbRed;
1016 lppc->peNew[n].peGreen = rgbNew[n].rgbGreen;
1017 lppc->peNew[n].peBlue = rgbNew[n].rgbBlue;
1018 lppc->peNew[n].peFlags = 0;
1019 }
1020
1021 if (mmioSeek(This->paf->hmmio, This->paf->dwNextFramePos, SEEK_SET) == -1 ||
1022 mmioCreateChunk(This->paf->hmmio, &ck, 0) != S_OK ||
1023 mmioWrite(This->paf->hmmio, (HPSTR)lppc, ck.cksize) != ck.cksize ||
1024 mmioAscend(This->paf->hmmio, &ck, 0) != S_OK)
1025 {
1026 HeapFree(GetProcessHeap(), 0, lppc);
1027 return AVIERR_FILEWRITE;
1028 }
1029
1030 This->paf->dwNextFramePos += ck.cksize + 2 * sizeof(DWORD);
1031
1032 HeapFree(GetProcessHeap(), 0, lppc);
1033
1034 return AVIFILE_AddFrame(This, cktypePALchange, n, ck.dwDataOffset, 0);
1035 }
1036 }
1037
1038 static HRESULT WINAPI IAVIStream_fnRead(IAVIStream *iface, LONG start,
1039 LONG samples, LPVOID buffer,
1040 LONG buffersize, LPLONG bytesread,
1041 LPLONG samplesread)
1042 {
1043 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1044
1045 DWORD size;
1046 HRESULT hr;
1047
1048 TRACE("(%p,%d,%d,%p,%d,%p,%p)\n", iface, start, samples, buffer,
1049 buffersize, bytesread, samplesread);
1050
1051 /* clear return parameters if given */
1052 if (bytesread != NULL)
1053 *bytesread = 0;
1054 if (samplesread != NULL)
1055 *samplesread = 0;
1056
1057 /* check parameters */
1058 if ((LONG)This->sInfo.dwStart > start)
1059 return AVIERR_NODATA; /* couldn't read before start of stream */
1060 if (This->sInfo.dwStart + This->sInfo.dwLength < (DWORD)start)
1061 return AVIERR_NODATA; /* start is past end of stream */
1062
1063 /* should we read as much as possible? */
1064 if (samples == -1) {
1065 /* User should know how much we have read */
1066 if (bytesread == NULL && samplesread == NULL)
1067 return AVIERR_BADPARAM;
1068
1069 if (This->sInfo.dwSampleSize != 0)
1070 samples = buffersize / This->sInfo.dwSampleSize;
1071 else
1072 samples = 1;
1073 }
1074
1075 /* limit to end of stream */
1076 if ((LONG)This->sInfo.dwLength < samples)
1077 samples = This->sInfo.dwLength;
1078 if ((start - This->sInfo.dwStart) > (This->sInfo.dwLength - samples))
1079 samples = This->sInfo.dwLength - (start - This->sInfo.dwStart);
1080
1081 /* nothing to read? Then leave ... */
1082 if (samples == 0)
1083 return AVIERR_OK;
1084
1085 if (This->sInfo.dwSampleSize != 0) {
1086 /* fixed samplesize -- we can read over frame/block boundaries */
1087 LONG block = start;
1088 LONG offset = 0;
1089
1090 if (!buffer)
1091 {
1092 if (bytesread)
1093 *bytesread = samples*This->sInfo.dwSampleSize;
1094 if (samplesread)
1095 *samplesread = samples;
1096 return AVIERR_OK;
1097 }
1098
1099 /* convert start sample to block,offset pair */
1100 AVIFILE_SamplesToBlock(This, &block, &offset);
1101
1102 /* convert samples to bytes */
1103 samples *= This->sInfo.dwSampleSize;
1104
1105 while (samples > 0 && buffersize > 0) {
1106 LONG blocksize;
1107 if (block != This->dwCurrentFrame) {
1108 hr = AVIFILE_ReadBlock(This, block, NULL, 0);
1109 if (FAILED(hr))
1110 return hr;
1111 }
1112
1113 size = min((DWORD)samples, (DWORD)buffersize);
1114 blocksize = This->lpBuffer[1];
1115 TRACE("blocksize = %u\n",blocksize);
1116 size = min(size, blocksize - offset);
1117 memcpy(buffer, ((BYTE*)&This->lpBuffer[2]) + offset, size);
1118
1119 block++;
1120 offset = 0;
1121 buffer = ((LPBYTE)buffer)+size;
1122 samples -= size;
1123 buffersize -= size;
1124
1125 /* fill out return parameters if given */
1126 if (bytesread != NULL)
1127 *bytesread += size;
1128 if (samplesread != NULL)
1129 *samplesread += size / This->sInfo.dwSampleSize;
1130 }
1131
1132 if (samples == 0)
1133 return AVIERR_OK;
1134 else
1135 return AVIERR_BUFFERTOOSMALL;
1136 } else {
1137 /* variable samplesize -- we can only read one full frame/block */
1138 if (samples > 1)
1139 samples = 1;
1140
1141 assert(start <= This->lLastFrame);
1142 size = This->idxFrames[start].dwChunkLength;
1143 if (buffer != NULL && buffersize >= size) {
1144 hr = AVIFILE_ReadBlock(This, start, buffer, size);
1145 if (FAILED(hr))
1146 return hr;
1147 } else if (buffer != NULL)
1148 return AVIERR_BUFFERTOOSMALL;
1149
1150 /* fill out return parameters if given */
1151 if (bytesread != NULL)
1152 *bytesread = size;
1153 if (samplesread != NULL)
1154 *samplesread = samples;
1155
1156 return AVIERR_OK;
1157 }
1158 }
1159
1160 static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream *iface, LONG start,
1161 LONG samples, LPVOID buffer,
1162 LONG buffersize, DWORD flags,
1163 LPLONG sampwritten,
1164 LPLONG byteswritten)
1165 {
1166 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1167
1168 FOURCC ckid;
1169 HRESULT hr;
1170
1171 TRACE("(%p,%d,%d,%p,%d,0x%08X,%p,%p)\n", iface, start, samples,
1172 buffer, buffersize, flags, sampwritten, byteswritten);
1173
1174 /* clear return parameters if given */
1175 if (sampwritten != NULL)
1176 *sampwritten = 0;
1177 if (byteswritten != NULL)
1178 *byteswritten = 0;
1179
1180 /* check parameters */
1181 if (buffer == NULL && (buffersize > 0 || samples > 0))
1182 return AVIERR_BADPARAM;
1183
1184 /* Have we write permission? */
1185 if ((This->paf->uMode & MMIO_RWMODE) == 0)
1186 return AVIERR_READONLY;
1187
1188 switch (This->sInfo.fccType) {
1189 case streamtypeAUDIO:
1190 ckid = MAKEAVICKID(cktypeWAVEbytes, This->nStream);
1191 break;
1192 default:
1193 if ((flags & AVIIF_KEYFRAME) && buffersize != 0)
1194 ckid = MAKEAVICKID(cktypeDIBbits, This->nStream);
1195 else
1196 ckid = MAKEAVICKID(cktypeDIBcompressed, This->nStream);
1197 break;
1198 };
1199
1200 /* append to end of stream? */
1201 if (start == -1) {
1202 if (This->lLastFrame == -1)
1203 start = This->sInfo.dwStart;
1204 else
1205 start = This->sInfo.dwLength;
1206 } else if (This->lLastFrame == -1)
1207 This->sInfo.dwStart = start;
1208
1209 if (This->sInfo.dwSampleSize != 0) {
1210 /* fixed sample size -- audio like */
1211 if (samples * This->sInfo.dwSampleSize != buffersize)
1212 return AVIERR_BADPARAM;
1213
1214 /* Couldn't skip audio-like data -- User must supply appropriate silence */
1215 if (This->sInfo.dwLength != start)
1216 return AVIERR_UNSUPPORTED;
1217
1218 /* Convert position to frame/block */
1219 start = This->lLastFrame + 1;
1220
1221 if ((This->paf->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) == 0) {
1222 FIXME(": not interleaved, could collect audio data!\n");
1223 }
1224 } else {
1225 /* variable sample size -- video like */
1226 if (samples > 1)
1227 return AVIERR_UNSUPPORTED;
1228
1229 /* must we fill up with empty frames? */
1230 if (This->lLastFrame != -1) {
1231 FOURCC ckid2 = MAKEAVICKID(cktypeDIBcompressed, This->nStream);
1232
1233 while (start > This->lLastFrame + 1) {
1234 hr = AVIFILE_WriteBlock(This, This->lLastFrame + 1, ckid2, 0, NULL, 0);
1235 if (FAILED(hr))
1236 return hr;
1237 }
1238 }
1239 }
1240
1241 /* write the block now */
1242 hr = AVIFILE_WriteBlock(This, start, ckid, flags, buffer, buffersize);
1243 if (SUCCEEDED(hr)) {
1244 /* fill out return parameters if given */
1245 if (sampwritten != NULL)
1246 *sampwritten = samples;
1247 if (byteswritten != NULL)
1248 *byteswritten = buffersize;
1249 }
1250
1251 return hr;
1252 }
1253
1254 static HRESULT WINAPI IAVIStream_fnDelete(IAVIStream *iface, LONG start,
1255 LONG samples)
1256 {
1257 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1258
1259 FIXME("(%p,%d,%d): stub\n", iface, start, samples);
1260
1261 /* check parameters */
1262 if (start < 0 || samples < 0)
1263 return AVIERR_BADPARAM;
1264
1265 /* Delete before start of stream? */
1266 if (start + samples < This->sInfo.dwStart)
1267 return AVIERR_OK;
1268
1269 /* Delete after end of stream? */
1270 if (start > This->sInfo.dwLength)
1271 return AVIERR_OK;
1272
1273 /* For the rest we need write permissions */
1274 if ((This->paf->uMode & MMIO_RWMODE) == 0)
1275 return AVIERR_READONLY;
1276
1277 /* 1. overwrite the data with JUNK
1278 *
1279 * if ISINTERLEAVED {
1280 * 2. concat all neighboured JUNK-blocks in this record to one
1281 * 3. if this record only contains JUNK and is at end set dwNextFramePos
1282 * to start of this record, repeat this.
1283 * } else {
1284 * 2. concat all neighboured JUNK-blocks.
1285 * 3. if the JUNK block is at the end, then set dwNextFramePos to
1286 * start of this block.
1287 * }
1288 */
1289
1290 return AVIERR_UNSUPPORTED;
1291 }
1292
1293 static HRESULT WINAPI IAVIStream_fnReadData(IAVIStream *iface, DWORD fcc,
1294 LPVOID lp, LPLONG lpread)
1295 {
1296 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1297
1298 TRACE("(%p,0x%08X,%p,%p)\n", iface, fcc, lp, lpread);
1299
1300 if (fcc == ckidSTREAMHANDLERDATA) {
1301 if (This->lpHandlerData != NULL && This->cbHandlerData > 0) {
1302 if (lp == NULL || *lpread <= 0) {
1303 *lpread = This->cbHandlerData;
1304 return AVIERR_OK;
1305 }
1306
1307 memcpy(lp, This->lpHandlerData, min(This->cbHandlerData, *lpread));
1308 if (*lpread < This->cbHandlerData)
1309 return AVIERR_BUFFERTOOSMALL;
1310 return AVIERR_OK;
1311 } else
1312 return AVIERR_NODATA;
1313 } else
1314 return ReadExtraChunk(&This->extra, fcc, lp, lpread);
1315 }
1316
1317 static HRESULT WINAPI IAVIStream_fnWriteData(IAVIStream *iface, DWORD fcc,
1318 LPVOID lp, LONG size)
1319 {
1320 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1321
1322 TRACE("(%p,0x%08x,%p,%d)\n", iface, fcc, lp, size);
1323
1324 /* check parameters */
1325 if (lp == NULL)
1326 return AVIERR_BADPARAM;
1327 if (size <= 0)
1328 return AVIERR_BADSIZE;
1329
1330 /* need write permission */
1331 if ((This->paf->uMode & MMIO_RWMODE) == 0)
1332 return AVIERR_READONLY;
1333
1334 /* already written something to this file? */
1335 if (This->paf->dwMoviChunkPos != 0) {
1336 /* the data will be inserted before the 'movi' chunk, so check for
1337 * enough space */
1338 DWORD dwPos = AVIFILE_ComputeMoviStart(This->paf);
1339
1340 /* ckid,size => 2 * sizeof(DWORD) */
1341 dwPos += 2 * sizeof(DWORD) + size;
1342 if (size >= This->paf->dwMoviChunkPos - 2 * sizeof(DWORD))
1343 return AVIERR_UNSUPPORTED; /* not enough space left */
1344 }
1345
1346 This->paf->fDirty = TRUE;
1347
1348 if (fcc == ckidSTREAMHANDLERDATA) {
1349 if (This->lpHandlerData != NULL) {
1350 FIXME(": handler data already set -- overwirte?\n");
1351 return AVIERR_UNSUPPORTED;
1352 }
1353
1354 This->lpHandlerData = HeapAlloc(GetProcessHeap(), 0, size);
1355 if (This->lpHandlerData == NULL)
1356 return AVIERR_MEMORY;
1357 This->cbHandlerData = size;
1358 memcpy(This->lpHandlerData, lp, size);
1359
1360 return AVIERR_OK;
1361 } else
1362 return WriteExtraChunk(&This->extra, fcc, lp, size);
1363 }
1364
1365 static HRESULT WINAPI IAVIStream_fnSetInfo(IAVIStream *iface,
1366 LPAVISTREAMINFOW info, LONG infolen)
1367 {
1368 FIXME("(%p,%p,%d): stub\n", iface, info, infolen);
1369
1370 return E_FAIL;
1371 }
1372
1373 /***********************************************************************/
1374
1375 static HRESULT AVIFILE_AddFrame(IAVIStreamImpl *This, DWORD ckid, DWORD size, DWORD offset, DWORD flags)
1376 {
1377 UINT n;
1378
1379 /* pre-conditions */
1380 assert(This != NULL);
1381
1382 switch (TWOCCFromFOURCC(ckid)) {
1383 case cktypeDIBbits:
1384 if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
1385 flags |= AVIIF_KEYFRAME;
1386 break;
1387 case cktypeDIBcompressed:
1388 if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
1389 flags &= ~AVIIF_KEYFRAME;
1390 break;
1391 case cktypePALchange:
1392 if (This->sInfo.fccType != streamtypeVIDEO) {
1393 ERR(": found palette change in non-video stream!\n");
1394 return AVIERR_BADFORMAT;
1395 }
1396
1397 if (This->idxFmtChanges == NULL || This->nIdxFmtChanges <= This->sInfo.dwFormatChangeCount) {
1398 DWORD new_count = This->nIdxFmtChanges + 16;
1399 void *new_buffer;
1400
1401 if (This->idxFmtChanges == NULL) {
1402 This->idxFmtChanges =
1403 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, new_count * sizeof(AVIINDEXENTRY));
1404 if (!This->idxFmtChanges) return AVIERR_MEMORY;
1405 } else {
1406 new_buffer = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->idxFmtChanges,
1407 new_count * sizeof(AVIINDEXENTRY));
1408 if (!new_buffer) return AVIERR_MEMORY;
1409 This->idxFmtChanges = new_buffer;
1410 }
1411 This->nIdxFmtChanges = new_count;
1412 }
1413
1414 This->sInfo.dwFlags |= AVISTREAMINFO_FORMATCHANGES;
1415 n = ++This->sInfo.dwFormatChangeCount;
1416 This->idxFmtChanges[n].ckid = This->lLastFrame;
1417 This->idxFmtChanges[n].dwFlags = 0;
1418 This->idxFmtChanges[n].dwChunkOffset = offset;
1419 This->idxFmtChanges[n].dwChunkLength = size;
1420
1421 return AVIERR_OK;
1422 case cktypeWAVEbytes:
1423 if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
1424 flags |= AVIIF_KEYFRAME;
1425 break;
1426 default:
1427 WARN(": unknown TWOCC 0x%04X found\n", TWOCCFromFOURCC(ckid));
1428 break;
1429 };
1430
1431 /* first frame is always a keyframe */
1432 if (This->lLastFrame == -1)
1433 flags |= AVIIF_KEYFRAME;
1434
1435 if (This->sInfo.dwSuggestedBufferSize < size)
1436 This->sInfo.dwSuggestedBufferSize = size;
1437
1438 /* get memory for index */
1439 if (This->idxFrames == NULL || This->lLastFrame + 1 >= This->nIdxFrames) {
1440 This->nIdxFrames += 512;
1441 if (This->idxFrames == NULL)
1442 This->idxFrames = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->nIdxFrames * sizeof(AVIINDEXENTRY));
1443 else
1444 This->idxFrames = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->idxFrames,
1445 This->nIdxFrames * sizeof(AVIINDEXENTRY));
1446 if (This->idxFrames == NULL)
1447 return AVIERR_MEMORY;
1448 }
1449
1450 This->lLastFrame++;
1451 This->idxFrames[This->lLastFrame].ckid = ckid;
1452 This->idxFrames[This->lLastFrame].dwFlags = flags;
1453 This->idxFrames[This->lLastFrame].dwChunkOffset = offset;
1454 This->idxFrames[This->lLastFrame].dwChunkLength = size;
1455
1456 /* update AVISTREAMINFO structure if necessary */
1457 if (This->sInfo.dwLength <= This->lLastFrame)
1458 This->sInfo.dwLength = This->lLastFrame + 1;
1459
1460 return AVIERR_OK;
1461 }
1462
1463 static HRESULT AVIFILE_AddRecord(IAVIFileImpl *This)
1464 {
1465 /* pre-conditions */
1466 assert(This != NULL && This->ppStreams[0] != NULL);
1467
1468 if (This->idxRecords == NULL || This->cbIdxRecords == 0) {
1469 This->cbIdxRecords += 1024 * sizeof(AVIINDEXENTRY);
1470 This->idxRecords = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->cbIdxRecords);
1471 if (This->idxRecords == NULL)
1472 return AVIERR_MEMORY;
1473 }
1474
1475 assert(This->nIdxRecords < This->cbIdxRecords/sizeof(AVIINDEXENTRY));
1476
1477 This->idxRecords[This->nIdxRecords].ckid = listtypeAVIRECORD;
1478 This->idxRecords[This->nIdxRecords].dwFlags = AVIIF_LIST;
1479 This->idxRecords[This->nIdxRecords].dwChunkOffset =
1480 This->ckLastRecord.dwDataOffset - 2 * sizeof(DWORD);
1481 This->idxRecords[This->nIdxRecords].dwChunkLength =
1482 This->ckLastRecord.cksize;
1483 This->nIdxRecords++;
1484
1485 return AVIERR_OK;
1486 }
1487
1488 static DWORD AVIFILE_ComputeMoviStart(IAVIFileImpl *This)
1489 {
1490 DWORD dwPos;
1491 DWORD nStream;
1492
1493 /* RIFF,hdrl,movi,avih => (3 * 3 + 2) * sizeof(DWORD) = 11 * sizeof(DWORD) */
1494 dwPos = 11 * sizeof(DWORD) + sizeof(MainAVIHeader);
1495
1496 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
1497 IAVIStreamImpl *pStream = This->ppStreams[nStream];
1498
1499 /* strl,strh,strf => (3 + 2 * 2) * sizeof(DWORD) = 7 * sizeof(DWORD) */
1500 dwPos += 7 * sizeof(DWORD) + sizeof(AVIStreamHeader);
1501 dwPos += ((pStream->cbFormat + 1) & ~1U);
1502 if (pStream->lpHandlerData != NULL && pStream->cbHandlerData > 0)
1503 dwPos += 2 * sizeof(DWORD) + ((pStream->cbHandlerData + 1) & ~1U);
1504 if (lstrlenW(pStream->sInfo.szName) > 0)
1505 dwPos += 2 * sizeof(DWORD) + ((lstrlenW(pStream->sInfo.szName) + 1) & ~1U);
1506 }
1507
1508 if (This->dwMoviChunkPos == 0) {
1509 This->dwNextFramePos = dwPos;
1510
1511 /* pad to multiple of AVI_HEADERSIZE only if we are more than 8 bytes away from it */
1512 if (((dwPos + AVI_HEADERSIZE) & ~(AVI_HEADERSIZE - 1)) - dwPos > 2 * sizeof(DWORD))
1513 This->dwNextFramePos = (dwPos + AVI_HEADERSIZE) & ~(AVI_HEADERSIZE - 1);
1514
1515 This->dwMoviChunkPos = This->dwNextFramePos - sizeof(DWORD);
1516 }
1517
1518 return dwPos;
1519 }
1520
1521 static void AVIFILE_ConstructAVIStream(IAVIFileImpl *paf, DWORD nr, const AVISTREAMINFOW *asi)
1522 {
1523 IAVIStreamImpl *pstream;
1524
1525 /* pre-conditions */
1526 assert(paf != NULL);
1527 assert(nr < MAX_AVISTREAMS);
1528 assert(paf->ppStreams[nr] != NULL);
1529
1530 pstream = paf->ppStreams[nr];
1531
1532 pstream->lpVtbl = &iavist;
1533 pstream->ref = 0;
1534 pstream->paf = paf;
1535 pstream->nStream = nr;
1536 pstream->dwCurrentFrame = (DWORD)-1;
1537 pstream->lLastFrame = -1;
1538
1539 if (asi != NULL) {
1540 memcpy(&pstream->sInfo, asi, sizeof(pstream->sInfo));
1541
1542 if (asi->dwLength > 0) {
1543 /* pre-allocate mem for frame-index structure */
1544 pstream->idxFrames =
1545 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, asi->dwLength * sizeof(AVIINDEXENTRY));
1546 if (pstream->idxFrames != NULL)
1547 pstream->nIdxFrames = asi->dwLength;
1548 }
1549 if (asi->dwFormatChangeCount > 0) {
1550 /* pre-allocate mem for formatchange-index structure */
1551 pstream->idxFmtChanges =
1552 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, asi->dwFormatChangeCount * sizeof(AVIINDEXENTRY));
1553 if (pstream->idxFmtChanges != NULL)
1554 pstream->nIdxFmtChanges = asi->dwFormatChangeCount;
1555 }
1556
1557 /* These values will be computed */
1558 pstream->sInfo.dwLength = 0;
1559 pstream->sInfo.dwSuggestedBufferSize = 0;
1560 pstream->sInfo.dwFormatChangeCount = 0;
1561 pstream->sInfo.dwEditCount = 1;
1562 if (pstream->sInfo.dwSampleSize > 0)
1563 SetRectEmpty(&pstream->sInfo.rcFrame);
1564 }
1565
1566 pstream->sInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
1567 }
1568
1569 static void AVIFILE_DestructAVIStream(IAVIStreamImpl *This)
1570 {
1571 /* pre-conditions */
1572 assert(This != NULL);
1573
1574 This->dwCurrentFrame = (DWORD)-1;
1575 This->lLastFrame = -1;
1576 This->paf = NULL;
1577 if (This->idxFrames != NULL) {
1578 HeapFree(GetProcessHeap(), 0, This->idxFrames);
1579 This->idxFrames = NULL;
1580 This->nIdxFrames = 0;
1581 }
1582 HeapFree(GetProcessHeap(), 0, This->idxFmtChanges);
1583 This->idxFmtChanges = NULL;
1584 if (This->lpBuffer != NULL) {
1585 HeapFree(GetProcessHeap(), 0, This->lpBuffer);
1586 This->lpBuffer = NULL;
1587 This->cbBuffer = 0;
1588 }
1589 if (This->lpHandlerData != NULL) {
1590 HeapFree(GetProcessHeap(), 0, This->lpHandlerData);
1591 This->lpHandlerData = NULL;
1592 This->cbHandlerData = 0;
1593 }
1594 if (This->extra.lp != NULL) {
1595 HeapFree(GetProcessHeap(), 0, This->extra.lp);
1596 This->extra.lp = NULL;
1597 This->extra.cb = 0;
1598 }
1599 if (This->lpFormat != NULL) {
1600 HeapFree(GetProcessHeap(), 0, This->lpFormat);
1601 This->lpFormat = NULL;
1602 This->cbFormat = 0;
1603 }
1604 }
1605
1606 static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
1607 {
1608 MainAVIHeader MainAVIHdr;
1609 MMCKINFO ckRIFF;
1610 MMCKINFO ckLIST1;
1611 MMCKINFO ckLIST2;
1612 MMCKINFO ck;
1613 IAVIStreamImpl *pStream;
1614 DWORD nStream;
1615 HRESULT hr;
1616
1617 if (This->hmmio == NULL)
1618 return AVIERR_FILEOPEN;
1619
1620 /* initialize stream ptr's */
1621 memset(This->ppStreams, 0, sizeof(This->ppStreams));
1622
1623 /* try to get "RIFF" chunk -- must not be at beginning of file! */
1624 ckRIFF.fccType = formtypeAVI;
1625 if (mmioDescend(This->hmmio, &ckRIFF, NULL, MMIO_FINDRIFF) != S_OK) {
1626 ERR(": not an AVI!\n");
1627 return AVIERR_FILEREAD;
1628 }
1629
1630 /* get "LIST" "hdrl" */
1631 ckLIST1.fccType = listtypeAVIHEADER;
1632 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ckLIST1, &ckRIFF, MMIO_FINDLIST);
1633 if (FAILED(hr))
1634 return hr;
1635
1636 /* get "avih" chunk */
1637 ck.ckid = ckidAVIMAINHDR;
1638 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckLIST1, MMIO_FINDCHUNK);
1639 if (FAILED(hr))
1640 return hr;
1641
1642 if (ck.cksize != sizeof(MainAVIHdr)) {
1643 ERR(": invalid size of %d for MainAVIHeader!\n", ck.cksize);
1644 return AVIERR_BADFORMAT;
1645 }
1646 if (mmioRead(This->hmmio, (HPSTR)&MainAVIHdr, ck.cksize) != ck.cksize)
1647 return AVIERR_FILEREAD;
1648
1649 /* check for MAX_AVISTREAMS limit */
1650 if (MainAVIHdr.dwStreams > MAX_AVISTREAMS) {
1651 WARN("file contains %u streams, but only supports %d -- change MAX_AVISTREAMS!\n", MainAVIHdr.dwStreams, MAX_AVISTREAMS);
1652 return AVIERR_UNSUPPORTED;
1653 }
1654
1655 /* adjust permissions if copyrighted material in file */
1656 if (MainAVIHdr.dwFlags & AVIFILEINFO_COPYRIGHTED) {
1657 This->uMode &= ~MMIO_RWMODE;
1658 This->uMode |= MMIO_READ;
1659 }
1660
1661 /* convert MainAVIHeader into AVIFILINFOW */
1662 memset(&This->fInfo, 0, sizeof(This->fInfo));
1663 This->fInfo.dwRate = MainAVIHdr.dwMicroSecPerFrame;
1664 This->fInfo.dwScale = 1000000;
1665 This->fInfo.dwMaxBytesPerSec = MainAVIHdr.dwMaxBytesPerSec;
1666 This->fInfo.dwFlags = MainAVIHdr.dwFlags;
1667 This->fInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
1668 This->fInfo.dwLength = MainAVIHdr.dwTotalFrames;
1669 This->fInfo.dwStreams = MainAVIHdr.dwStreams;
1670 This->fInfo.dwSuggestedBufferSize = 0;
1671 This->fInfo.dwWidth = MainAVIHdr.dwWidth;
1672 This->fInfo.dwHeight = MainAVIHdr.dwHeight;
1673 LoadStringW(AVIFILE_hModule, IDS_AVIFILETYPE, This->fInfo.szFileType,
1674 sizeof(This->fInfo.szFileType)/sizeof(This->fInfo.szFileType[0]));
1675
1676 /* go back to into header list */
1677 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
1678 return AVIERR_FILEREAD;
1679
1680 /* foreach stream exists a "LIST","strl" chunk */
1681 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
1682 /* get next nested chunk in this "LIST","strl" */
1683 if (mmioDescend(This->hmmio, &ckLIST2, &ckLIST1, 0) != S_OK)
1684 return AVIERR_FILEREAD;
1685
1686 /* nested chunk must be of type "LIST","strl" -- when not normally JUNK */
1687 if (ckLIST2.ckid == FOURCC_LIST &&
1688 ckLIST2.fccType == listtypeSTREAMHEADER) {
1689 pStream = This->ppStreams[nStream] =
1690 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IAVIStreamImpl));
1691 if (pStream == NULL)
1692 return AVIERR_MEMORY;
1693 AVIFILE_ConstructAVIStream(This, nStream, NULL);
1694
1695 ck.ckid = 0;
1696 while (mmioDescend(This->hmmio, &ck, &ckLIST2, 0) == S_OK) {
1697 switch (ck.ckid) {
1698 case ckidSTREAMHANDLERDATA:
1699 if (pStream->lpHandlerData != NULL)
1700 return AVIERR_BADFORMAT;
1701 pStream->lpHandlerData = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1702 if (pStream->lpHandlerData == NULL)
1703 return AVIERR_MEMORY;
1704 pStream->cbHandlerData = ck.cksize;
1705
1706 if (mmioRead(This->hmmio, pStream->lpHandlerData, ck.cksize) != ck.cksize)
1707 return AVIERR_FILEREAD;
1708 break;
1709 case ckidSTREAMFORMAT:
1710 if (pStream->lpFormat != NULL)
1711 return AVIERR_BADFORMAT;
1712 if (ck.cksize == 0)
1713 break;
1714
1715 pStream->lpFormat = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1716 if (pStream->lpFormat == NULL)
1717 return AVIERR_MEMORY;
1718 pStream->cbFormat = ck.cksize;
1719
1720 if (mmioRead(This->hmmio, pStream->lpFormat, ck.cksize) != ck.cksize)
1721 return AVIERR_FILEREAD;
1722
1723 if (pStream->sInfo.fccType == streamtypeVIDEO) {
1724 LPBITMAPINFOHEADER lpbi = pStream->lpFormat;
1725
1726 /* some corrections to the video format */
1727 if (lpbi->biClrUsed == 0 && lpbi->biBitCount <= 8)
1728 lpbi->biClrUsed = 1u << lpbi->biBitCount;
1729 if (lpbi->biCompression == BI_RGB && lpbi->biSizeImage == 0)
1730 lpbi->biSizeImage = DIBWIDTHBYTES(*lpbi) * lpbi->biHeight;
1731 if (lpbi->biCompression != BI_RGB && lpbi->biBitCount == 8) {
1732 if (pStream->sInfo.fccHandler == mmioFOURCC('R','L','E','0') ||
1733 pStream->sInfo.fccHandler == mmioFOURCC('R','L','E',' '))
1734 lpbi->biCompression = BI_RLE8;
1735 }
1736 if (lpbi->biCompression == BI_RGB &&
1737 (pStream->sInfo.fccHandler == 0 ||
1738 pStream->sInfo.fccHandler == mmioFOURCC('N','O','N','E')))
1739 pStream->sInfo.fccHandler = comptypeDIB;
1740
1741 /* init rcFrame if it's empty */
1742 if (IsRectEmpty(&pStream->sInfo.rcFrame))
1743 SetRect(&pStream->sInfo.rcFrame, 0, 0, lpbi->biWidth, lpbi->biHeight);
1744 }
1745 break;
1746 case ckidSTREAMHEADER:
1747 {
1748 static const WCHAR streamTypeFmt[] = {'%','4','.','4','h','s',0};
1749
1750 AVIStreamHeader streamHdr;
1751 WCHAR szType[25];
1752 WCHAR streamNameFmt[25];
1753 UINT count;
1754 LONG n = ck.cksize;
1755
1756 if (ck.cksize > sizeof(streamHdr))
1757 n = sizeof(streamHdr);
1758
1759 if (mmioRead(This->hmmio, (HPSTR)&streamHdr, n) != n)
1760 return AVIERR_FILEREAD;
1761
1762 pStream->sInfo.fccType = streamHdr.fccType;
1763 pStream->sInfo.fccHandler = streamHdr.fccHandler;
1764 pStream->sInfo.dwFlags = streamHdr.dwFlags;
1765 pStream->sInfo.wPriority = streamHdr.wPriority;
1766 pStream->sInfo.wLanguage = streamHdr.wLanguage;
1767 pStream->sInfo.dwInitialFrames = streamHdr.dwInitialFrames;
1768 pStream->sInfo.dwScale = streamHdr.dwScale;
1769 pStream->sInfo.dwRate = streamHdr.dwRate;
1770 pStream->sInfo.dwStart = streamHdr.dwStart;
1771 pStream->sInfo.dwLength = streamHdr.dwLength;
1772 pStream->sInfo.dwSuggestedBufferSize = 0;
1773 pStream->sInfo.dwQuality = streamHdr.dwQuality;
1774 pStream->sInfo.dwSampleSize = streamHdr.dwSampleSize;
1775 pStream->sInfo.rcFrame.left = streamHdr.rcFrame.left;
1776 pStream->sInfo.rcFrame.top = streamHdr.rcFrame.top;
1777 pStream->sInfo.rcFrame.right = streamHdr.rcFrame.right;
1778 pStream->sInfo.rcFrame.bottom = streamHdr.rcFrame.bottom;
1779 pStream->sInfo.dwEditCount = 0;
1780 pStream->sInfo.dwFormatChangeCount = 0;
1781
1782 /* generate description for stream like "filename.avi Type #n" */
1783 if (streamHdr.fccType == streamtypeVIDEO)
1784 LoadStringW(AVIFILE_hModule, IDS_VIDEO, szType, sizeof(szType)/sizeof(szType[0]));
1785 else if (streamHdr.fccType == streamtypeAUDIO)
1786 LoadStringW(AVIFILE_hModule, IDS_AUDIO, szType, sizeof(szType)/sizeof(szType[0]));
1787 else
1788 wsprintfW(szType, streamTypeFmt, (char*)&streamHdr.fccType);
1789
1790 /* get count of this streamtype up to this stream */
1791 count = 0;
1792 for (n = nStream; 0 <= n; n--) {
1793 if (This->ppStreams[n]->sInfo.fccHandler == streamHdr.fccType)
1794 count++;
1795 }
1796
1797 memset(pStream->sInfo.szName, 0, sizeof(pStream->sInfo.szName));
1798
1799 LoadStringW(AVIFILE_hModule, IDS_AVISTREAMFORMAT, streamNameFmt, sizeof(streamNameFmt)/sizeof(streamNameFmt[0]));
1800
1801 /* FIXME: avoid overflow -- better use wsnprintfW, which doesn't exists ! */
1802 wsprintfW(pStream->sInfo.szName, streamNameFmt,
1803 AVIFILE_BasenameW(This->szFileName), szType, count);
1804 }
1805 break;
1806 case ckidSTREAMNAME:
1807 { /* streamname will be saved as ASCII string */
1808 LPSTR str = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1809 if (str == NULL)
1810 return AVIERR_MEMORY;
1811
1812 if (mmioRead(This->hmmio, str, ck.cksize) != ck.cksize)
1813 {
1814 HeapFree(GetProcessHeap(), 0, str);
1815 return AVIERR_FILEREAD;
1816 }
1817
1818 MultiByteToWideChar(CP_ACP, 0, str, -1, pStream->sInfo.szName,
1819 sizeof(pStream->sInfo.szName)/sizeof(pStream->sInfo.szName[0]));
1820
1821 HeapFree(GetProcessHeap(), 0, str);
1822 }
1823 break;
1824 case ckidAVIPADDING:
1825 case mmioFOURCC('p','a','d','d'):
1826 break;
1827 default:
1828 WARN(": found extra chunk 0x%08X\n", ck.ckid);
1829 hr = ReadChunkIntoExtra(&pStream->extra, This->hmmio, &ck);
1830 if (FAILED(hr))
1831 return hr;
1832 };
1833 if (pStream->lpFormat != NULL && pStream->sInfo.fccType == streamtypeAUDIO)
1834 {
1835 WAVEFORMATEX *wfx = pStream->lpFormat; /* wfx->nBlockAlign = wfx->nChannels * wfx->wBitsPerSample / 8; could be added */
1836 pStream->sInfo.dwSampleSize = wfx->nBlockAlign; /* to deal with corrupt wfx->nBlockAlign but Windows doesn't do this */
1837 TRACE("Block size reset to %u, chan=%u bpp=%u\n", wfx->nBlockAlign, wfx->nChannels, wfx->wBitsPerSample);
1838 pStream->sInfo.dwScale = 1;
1839 pStream->sInfo.dwRate = wfx->nSamplesPerSec;
1840 }
1841 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
1842 return AVIERR_FILEREAD;
1843 }
1844 } else {
1845 /* nested chunks in "LIST","hdrl" which are not of type "LIST","strl" */
1846 hr = ReadChunkIntoExtra(&This->fileextra, This->hmmio, &ckLIST2);
1847 if (FAILED(hr))
1848 return hr;
1849 }
1850 if (mmioAscend(This->hmmio, &ckLIST2, 0) != S_OK)
1851 return AVIERR_FILEREAD;
1852 }
1853
1854 /* read any extra headers in "LIST","hdrl" */
1855 FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckLIST1, 0);
1856 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
1857 return AVIERR_FILEREAD;
1858
1859 /* search "LIST","movi" chunk in "RIFF","AVI " */
1860 ckLIST1.fccType = listtypeAVIMOVIE;
1861 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ckLIST1, &ckRIFF,
1862 MMIO_FINDLIST);
1863 if (FAILED(hr))
1864 return hr;
1865
1866 This->dwMoviChunkPos = ckLIST1.dwDataOffset;
1867 This->dwIdxChunkPos = ckLIST1.cksize + ckLIST1.dwDataOffset;
1868 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
1869 return AVIERR_FILEREAD;
1870
1871 /* try to find an index */
1872 ck.ckid = ckidAVINEWINDEX;
1873 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio,
1874 &ck, &ckRIFF, MMIO_FINDCHUNK);
1875 if (SUCCEEDED(hr) && ck.cksize > 0) {
1876 if (FAILED(AVIFILE_LoadIndex(This, ck.cksize, ckLIST1.dwDataOffset)))
1877 This->fInfo.dwFlags &= ~AVIFILEINFO_HASINDEX;
1878 }
1879
1880 /* when we haven't found an index or it's bad, then build one
1881 * by parsing 'movi' chunk */
1882 if ((This->fInfo.dwFlags & AVIFILEINFO_HASINDEX) == 0) {
1883 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++)
1884 This->ppStreams[nStream]->lLastFrame = -1;
1885
1886 if (mmioSeek(This->hmmio, ckLIST1.dwDataOffset + sizeof(DWORD), SEEK_SET) == -1) {
1887 ERR(": Oops, can't seek back to 'movi' chunk!\n");
1888 return AVIERR_FILEREAD;
1889 }
1890
1891 /* seek through the 'movi' list until end */
1892 while (mmioDescend(This->hmmio, &ck, &ckLIST1, 0) == S_OK) {
1893 if (ck.ckid != FOURCC_LIST) {
1894 if (mmioAscend(This->hmmio, &ck, 0) == S_OK) {
1895 nStream = StreamFromFOURCC(ck.ckid);
1896
1897 if (nStream > This->fInfo.dwStreams)
1898 return AVIERR_BADFORMAT;
1899
1900 AVIFILE_AddFrame(This->ppStreams[nStream], ck.ckid, ck.cksize,
1901 ck.dwDataOffset - 2 * sizeof(DWORD), 0);
1902 } else {
1903 nStream = StreamFromFOURCC(ck.ckid);
1904 WARN(": file seems to be truncated!\n");
1905 if (nStream <= This->fInfo.dwStreams &&
1906 This->ppStreams[nStream]->sInfo.dwSampleSize > 0) {
1907 ck.cksize = mmioSeek(This->hmmio, 0, SEEK_END);
1908 if (ck.cksize != -1) {
1909 ck.cksize -= ck.dwDataOffset;
1910 ck.cksize &= ~(This->ppStreams[nStream]->sInfo.dwSampleSize - 1);
1911
1912 AVIFILE_AddFrame(This->ppStreams[nStream], ck.ckid, ck.cksize,
1913 ck.dwDataOffset - 2 * sizeof(DWORD), 0);
1914 }
1915 }
1916 }
1917 }
1918 }
1919 }
1920
1921 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++)
1922 {
1923 DWORD sugbuf = This->ppStreams[nStream]->sInfo.dwSuggestedBufferSize;
1924 if (This->fInfo.dwSuggestedBufferSize < sugbuf)
1925 This->fInfo.dwSuggestedBufferSize = sugbuf;
1926 }
1927
1928 /* find other chunks */
1929 FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckRIFF, 0);
1930
1931 return AVIERR_OK;
1932 }
1933
1934 static HRESULT AVIFILE_LoadIndex(const IAVIFileImpl *This, DWORD size, DWORD offset)
1935 {
1936 AVIINDEXENTRY *lp;
1937 DWORD pos, n;
1938 HRESULT hr = AVIERR_OK;
1939 BOOL bAbsolute = TRUE;
1940
1941 lp = HeapAlloc(GetProcessHeap(), 0, IDX_PER_BLOCK * sizeof(AVIINDEXENTRY));
1942 if (lp == NULL)
1943 return AVIERR_MEMORY;
1944
1945 /* adjust limits for index tables, so that inserting will be faster */
1946 for (n = 0; n < This->fInfo.dwStreams; n++) {
1947 IAVIStreamImpl *pStream = This->ppStreams[n];
1948
1949 pStream->lLastFrame = -1;
1950
1951 if (pStream->idxFrames != NULL) {
1952 HeapFree(GetProcessHeap(), 0, pStream->idxFrames);
1953 pStream->idxFrames = NULL;
1954 pStream->nIdxFrames = 0;
1955 }
1956
1957 if (pStream->sInfo.dwSampleSize != 0) {
1958 if (n > 0 && This->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) {
1959 pStream->nIdxFrames = This->ppStreams[0]->nIdxFrames;
1960 } else if (pStream->sInfo.dwSuggestedBufferSize) {
1961 pStream->nIdxFrames =
1962 pStream->sInfo.dwLength / pStream->sInfo.dwSuggestedBufferSize;
1963 }
1964 } else
1965 pStream->nIdxFrames = pStream->sInfo.dwLength;
1966
1967 pStream->idxFrames =
1968 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, pStream->nIdxFrames * sizeof(AVIINDEXENTRY));
1969 if (pStream->idxFrames == NULL && pStream->nIdxFrames > 0) {
1970 pStream->nIdxFrames = 0;
1971 HeapFree(GetProcessHeap(), 0, lp);
1972 return AVIERR_MEMORY;
1973 }
1974 }
1975
1976 pos = (DWORD)-1;
1977 while (size != 0) {
1978 LONG read = min(IDX_PER_BLOCK * sizeof(AVIINDEXENTRY), size);
1979
1980 if (mmioRead(This->hmmio, (HPSTR)lp, read) != read) {
1981 hr = AVIERR_FILEREAD;
1982 break;
1983 }
1984 size -= read;
1985
1986 if (pos == (DWORD)-1)
1987 pos = offset - lp->dwChunkOffset + sizeof(DWORD);
1988
1989 AVIFILE_ParseIndex(This, lp, read / sizeof(AVIINDEXENTRY),
1990 pos, &bAbsolute);
1991 }
1992
1993 HeapFree(GetProcessHeap(), 0, lp);
1994
1995 /* checking ... */
1996 for (n = 0; n < This->fInfo.dwStreams; n++) {
1997 IAVIStreamImpl *pStream = This->ppStreams[n];
1998
1999 if (pStream->sInfo.dwSampleSize == 0 &&
2000 pStream->sInfo.dwLength != pStream->lLastFrame+1)
2001 ERR("stream %u length mismatch: dwLength=%u found=%d\n",
2002 n, pStream->sInfo.dwLength, pStream->lLastFrame);
2003 }
2004
2005 return hr;
2006 }
2007
2008 static HRESULT AVIFILE_ParseIndex(const IAVIFileImpl *This, AVIINDEXENTRY *lp,
2009 LONG count, DWORD pos, BOOL *bAbsolute)
2010 {
2011 if (lp == NULL)
2012 return AVIERR_BADPARAM;
2013
2014 for (; count > 0; count--, lp++) {
2015 WORD nStream = StreamFromFOURCC(lp->ckid);
2016
2017 if (lp->ckid == listtypeAVIRECORD || nStream == 0x7F)
2018 continue; /* skip these */
2019
2020 if (nStream > This->fInfo.dwStreams)
2021 return AVIERR_BADFORMAT;
2022
2023 if (*bAbsolute && lp->dwChunkOffset < This->dwMoviChunkPos)
2024 *bAbsolute = FALSE;
2025
2026 if (*bAbsolute)
2027 lp->dwChunkOffset += sizeof(DWORD);
2028 else
2029 lp->dwChunkOffset += pos;
2030
2031 if (FAILED(AVIFILE_AddFrame(This->ppStreams[nStream], lp->ckid, lp->dwChunkLength, lp->dwChunkOffset, lp->dwFlags)))
2032 return AVIERR_MEMORY;
2033 }
2034
2035 return AVIERR_OK;
2036 }
2037
2038 static HRESULT AVIFILE_ReadBlock(IAVIStreamImpl *This, DWORD pos,
2039 LPVOID buffer, DWORD size)
2040 {
2041 /* pre-conditions */
2042 assert(This != NULL);
2043 assert(This->paf != NULL);
2044 assert(This->paf->hmmio != NULL);
2045 assert(This->sInfo.dwStart <= pos && pos < This->sInfo.dwLength);
2046 assert(pos <= This->lLastFrame);
2047
2048 /* should we read as much as block gives us? */
2049 if (size == 0 || size > This->idxFrames[pos].dwChunkLength)
2050 size = This->idxFrames[pos].dwChunkLength;
2051
2052 /* read into out own buffer or given one? */
2053 if (buffer == NULL) {
2054 /* we also read the chunk */
2055 size += 2 * sizeof(DWORD);
2056
2057 /* check that buffer is big enough -- don't trust dwSuggestedBufferSize */
2058 if (This->lpBuffer == NULL || This->cbBuffer < size) {
2059 DWORD maxSize = max(size, This->sInfo.dwSuggestedBufferSize);
2060
2061 if (This->lpBuffer == NULL) {
2062 This->lpBuffer = HeapAlloc(GetProcessHeap(), 0, maxSize);
2063 if (!This->lpBuffer) return AVIERR_MEMORY;
2064 } else {
2065 void *new_buffer = HeapReAlloc(GetProcessHeap(), 0, This->lpBuffer, maxSize);
2066 if (!new_buffer) return AVIERR_MEMORY;
2067 This->lpBuffer = new_buffer;
2068 }
2069 This->cbBuffer = maxSize;
2070 }
2071
2072 /* now read the complete chunk into our buffer */
2073 if (mmioSeek(This->paf->hmmio, This->idxFrames[pos].dwChunkOffset, SEEK_SET) == -1)
2074 return AVIERR_FILEREAD;
2075 if (mmioRead(This->paf->hmmio, (HPSTR)This->lpBuffer, size) != size)
2076 return AVIERR_FILEREAD;
2077
2078 /* check if it was the correct block which we have read */
2079 if (This->lpBuffer[0] != This->idxFrames[pos].ckid ||
2080 This->lpBuffer[1] != This->idxFrames[pos].dwChunkLength) {
2081 ERR(": block %d not found at 0x%08X\n", pos, This->idxFrames[pos].dwChunkOffset);
2082 ERR(": Index says: '%4.4s'(0x%08X) size 0x%08X\n",
2083 (char*)&This->idxFrames[pos].ckid, This->idxFrames[pos].ckid,
2084 This->idxFrames[pos].dwChunkLength);
2085 ERR(": Data says: '%4.4s'(0x%08X) size 0x%08X\n",
2086 (char*)&This->lpBuffer[0], This->lpBuffer[0], This->lpBuffer[1]);
2087 return AVIERR_FILEREAD;
2088 }
2089 } else {
2090 if (mmioSeek(This->paf->hmmio, This->idxFrames[pos].dwChunkOffset + 2 * sizeof(DWORD), SEEK_SET) == -1)
2091 return AVIERR_FILEREAD;
2092 if (mmioRead(This->paf->hmmio, buffer, size) != size)
2093 return AVIERR_FILEREAD;
2094 }
2095
2096 return AVIERR_OK;
2097 }
2098
2099 static void AVIFILE_SamplesToBlock(const IAVIStreamImpl *This, LPLONG pos, LPLONG offset)
2100 {
2101 LONG block;
2102
2103 /* pre-conditions */
2104 assert(This != NULL);
2105 assert(pos != NULL);
2106 assert(offset != NULL);
2107 assert(This->sInfo.dwSampleSize != 0);
2108 assert(*pos >= This->sInfo.dwStart);
2109
2110 /* convert start sample to start bytes */
2111 (*offset) = (*pos) - This->sInfo.dwStart;
2112 (*offset) *= This->sInfo.dwSampleSize;
2113
2114 /* convert bytes to block number */
2115 for (block = 0; block <= This->lLastFrame; block++) {
2116 if (This->idxFrames[block].dwChunkLength <= *offset)
2117 (*offset) -= This->idxFrames[block].dwChunkLength;
2118 else
2119 break;
2120 }
2121
2122 *pos = block;
2123 }
2124
2125 static HRESULT AVIFILE_SaveFile(IAVIFileImpl *This)
2126 {
2127 MainAVIHeader MainAVIHdr;
2128 IAVIStreamImpl* pStream;
2129 MMCKINFO ckRIFF;
2130 MMCKINFO ckLIST1;
2131 MMCKINFO ckLIST2;
2132 MMCKINFO ck;
2133 DWORD nStream;
2134 DWORD dwPos;
2135 HRESULT hr;
2136
2137 /* initialize some things */
2138 if (This->dwMoviChunkPos == 0)
2139 AVIFILE_ComputeMoviStart(This);
2140
2141 /* written one record to much? */
2142 if (This->ckLastRecord.dwFlags & MMIO_DIRTY) {
2143 This->dwNextFramePos -= 3 * sizeof(DWORD);
2144 if (This->nIdxRecords > 0)
2145 This->nIdxRecords--;
2146 }
2147
2148 AVIFILE_UpdateInfo(This);
2149
2150 assert(This->fInfo.dwScale != 0);
2151
2152 memset(&MainAVIHdr, 0, sizeof(MainAVIHdr));
2153 MainAVIHdr.dwMicroSecPerFrame = MulDiv(This->fInfo.dwRate, 1000000,
2154 This->fInfo.dwScale);
2155 MainAVIHdr.dwMaxBytesPerSec = This->fInfo.dwMaxBytesPerSec;
2156 MainAVIHdr.dwPaddingGranularity = AVI_HEADERSIZE;
2157 MainAVIHdr.dwFlags = This->fInfo.dwFlags;
2158 MainAVIHdr.dwTotalFrames = This->fInfo.dwLength;
2159 MainAVIHdr.dwInitialFrames = 0;
2160 MainAVIHdr.dwStreams = This->fInfo.dwStreams;
2161 MainAVIHdr.dwSuggestedBufferSize = This->fInfo.dwSuggestedBufferSize;
2162 MainAVIHdr.dwWidth = This->fInfo.dwWidth;
2163 MainAVIHdr.dwHeight = This->fInfo.dwHeight;
2164 MainAVIHdr.dwInitialFrames = This->dwInitialFrames;
2165
2166 /* now begin writing ... */
2167 mmioSeek(This->hmmio, 0, SEEK_SET);
2168
2169 /* RIFF chunk */
2170 ckRIFF.cksize = 0;
2171 ckRIFF.fccType = formtypeAVI;
2172 if (mmioCreateChunk(This->hmmio, &ckRIFF, MMIO_CREATERIFF) != S_OK)
2173 return AVIERR_FILEWRITE;
2174
2175 /* AVI headerlist */
2176 ckLIST1.cksize = 0;
2177 ckLIST1.fccType = listtypeAVIHEADER;
2178 if (mmioCreateChunk(This->hmmio, &ckLIST1, MMIO_CREATELIST) != S_OK)
2179 return AVIERR_FILEWRITE;
2180
2181 /* MainAVIHeader */
2182 ck.ckid = ckidAVIMAINHDR;
2183 ck.cksize = sizeof(MainAVIHdr);
2184 ck.fccType = 0;
2185 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2186 return AVIERR_FILEWRITE;
2187 if (mmioWrite(This->hmmio, (HPSTR)&MainAVIHdr, ck.cksize) != ck.cksize)
2188 return AVIERR_FILEWRITE;
2189 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2190 return AVIERR_FILEWRITE;
2191
2192 /* write the headers of each stream into a separate streamheader list */
2193 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2194 AVIStreamHeader strHdr;
2195
2196 pStream = This->ppStreams[nStream];
2197
2198 /* begin the new streamheader list */
2199 ckLIST2.cksize = 0;
2200 ckLIST2.fccType = listtypeSTREAMHEADER;
2201 if (mmioCreateChunk(This->hmmio, &ckLIST2, MMIO_CREATELIST) != S_OK)
2202 return AVIERR_FILEWRITE;
2203
2204 /* create an AVIStreamHeader from the AVSTREAMINFO */
2205 strHdr.fccType = pStream->sInfo.fccType;
2206 strHdr.fccHandler = pStream->sInfo.fccHandler;
2207 strHdr.dwFlags = pStream->sInfo.dwFlags;
2208 strHdr.wPriority = pStream->sInfo.wPriority;
2209 strHdr.wLanguage = pStream->sInfo.wLanguage;
2210 strHdr.dwInitialFrames = pStream->sInfo.dwInitialFrames;
2211 strHdr.dwScale = pStream->sInfo.dwScale;
2212 strHdr.dwRate = pStream->sInfo.dwRate;
2213 strHdr.dwStart = pStream->sInfo.dwStart;
2214 strHdr.dwLength = pStream->sInfo.dwLength;
2215 strHdr.dwSuggestedBufferSize = pStream->sInfo.dwSuggestedBufferSize;
2216 strHdr.dwQuality = pStream->sInfo.dwQuality;
2217 strHdr.dwSampleSize = pStream->sInfo.dwSampleSize;
2218 strHdr.rcFrame.left = pStream->sInfo.rcFrame.left;
2219 strHdr.rcFrame.top = pStream->sInfo.rcFrame.top;
2220 strHdr.rcFrame.right = pStream->sInfo.rcFrame.right;
2221 strHdr.rcFrame.bottom = pStream->sInfo.rcFrame.bottom;
2222
2223 /* now write the AVIStreamHeader */
2224 ck.ckid = ckidSTREAMHEADER;
2225 ck.cksize = sizeof(strHdr);
2226 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2227 return AVIERR_FILEWRITE;
2228 if (mmioWrite(This->hmmio, (HPSTR)&strHdr, ck.cksize) != ck.cksize)
2229 return AVIERR_FILEWRITE;
2230 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2231 return AVIERR_FILEWRITE;
2232
2233 /* ... the hopefully ever present streamformat ... */
2234 ck.ckid = ckidSTREAMFORMAT;
2235 ck.cksize = pStream->cbFormat;
2236 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2237 return AVIERR_FILEWRITE;
2238 if (pStream->lpFormat != NULL && ck.cksize > 0) {
2239 if (mmioWrite(This->hmmio, pStream->lpFormat, ck.cksize) != ck.cksize)
2240 return AVIERR_FILEWRITE;
2241 }
2242 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2243 return AVIERR_FILEWRITE;
2244
2245 /* ... some optional existing handler data ... */
2246 if (pStream->lpHandlerData != NULL && pStream->cbHandlerData > 0) {
2247 ck.ckid = ckidSTREAMHANDLERDATA;
2248 ck.cksize = pStream->cbHandlerData;
2249 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2250 return AVIERR_FILEWRITE;
2251 if (mmioWrite(This->hmmio, pStream->lpHandlerData, ck.cksize) != ck.cksize)
2252 return AVIERR_FILEWRITE;
2253 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2254 return AVIERR_FILEWRITE;
2255 }
2256
2257 /* ... some optional additional extra chunk for this stream ... */
2258 if (pStream->extra.lp != NULL && pStream->extra.cb > 0) {
2259 /* the chunk header(s) are already in the structure */
2260 if (mmioWrite(This->hmmio, pStream->extra.lp, pStream->extra.cb) != pStream->extra.cb)
2261 return AVIERR_FILEWRITE;
2262 }
2263
2264 /* ... an optional name for this stream ... */
2265 if (lstrlenW(pStream->sInfo.szName) > 0) {
2266 LPSTR str;
2267
2268 ck.ckid = ckidSTREAMNAME;
2269 ck.cksize = lstrlenW(pStream->sInfo.szName) + 1;
2270 if (ck.cksize & 1) /* align */
2271 ck.cksize++;
2272 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2273 return AVIERR_FILEWRITE;
2274
2275 /* the streamname must be saved in ASCII not Unicode */
2276 str = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
2277 if (str == NULL)
2278 return AVIERR_MEMORY;
2279 WideCharToMultiByte(CP_ACP, 0, pStream->sInfo.szName, -1, str,
2280 ck.cksize, NULL, NULL);
2281
2282 if (mmioWrite(This->hmmio, str, ck.cksize) != ck.cksize) {
2283 HeapFree(GetProcessHeap(), 0, str);
2284 return AVIERR_FILEWRITE;
2285 }
2286
2287 HeapFree(GetProcessHeap(), 0, str);
2288 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2289 return AVIERR_FILEWRITE;
2290 }
2291
2292 /* close streamheader list for this stream */
2293 if (mmioAscend(This->hmmio, &ckLIST2, 0) != S_OK)
2294 return AVIERR_FILEWRITE;
2295 } /* for (0 <= nStream < MainAVIHdr.dwStreams) */
2296
2297 /* close the aviheader list */
2298 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
2299 return AVIERR_FILEWRITE;
2300
2301 /* check for padding to pre-guessed 'movi'-chunk position */
2302 dwPos = ckLIST1.dwDataOffset + ckLIST1.cksize;
2303 if (This->dwMoviChunkPos - 2 * sizeof(DWORD) > dwPos) {
2304 ck.ckid = ckidAVIPADDING;
2305 ck.cksize = This->dwMoviChunkPos - dwPos - 4 * sizeof(DWORD);
2306 assert((LONG)ck.cksize >= 0);
2307
2308 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2309 return AVIERR_FILEWRITE;
2310 if (mmioSeek(This->hmmio, ck.cksize, SEEK_CUR) == -1)
2311 return AVIERR_FILEWRITE;
2312 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2313 return AVIERR_FILEWRITE;
2314 }
2315
2316 /* now write the 'movi' chunk */
2317 mmioSeek(This->hmmio, This->dwMoviChunkPos - 2 * sizeof(DWORD), SEEK_SET);
2318 ckLIST1.cksize = 0;
2319 ckLIST1.fccType = listtypeAVIMOVIE;
2320 if (mmioCreateChunk(This->hmmio, &ckLIST1, MMIO_CREATELIST) != S_OK)
2321 return AVIERR_FILEWRITE;
2322 if (mmioSeek(This->hmmio, This->dwNextFramePos, SEEK_SET) == -1)
2323 return AVIERR_FILEWRITE;
2324 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
2325 return AVIERR_FILEWRITE;
2326
2327 /* write 'idx1' chunk */
2328 hr = AVIFILE_SaveIndex(This);
2329 if (FAILED(hr))
2330 return hr;
2331
2332 /* write optional extra file chunks */
2333 if (This->fileextra.lp != NULL && This->fileextra.cb > 0) {
2334 /* as for the streams, are the chunk header(s) in the structure */
2335 if (mmioWrite(This->hmmio, This->fileextra.lp, This->fileextra.cb) != This->fileextra.cb)
2336 return AVIERR_FILEWRITE;
2337 }
2338
2339 /* close RIFF chunk */
2340 if (mmioAscend(This->hmmio, &ckRIFF, 0) != S_OK)
2341 return AVIERR_FILEWRITE;
2342
2343 /* add some JUNK at end for bad parsers */
2344 memset(&ckRIFF, 0, sizeof(ckRIFF));
2345 mmioWrite(This->hmmio, (HPSTR)&ckRIFF, sizeof(ckRIFF));
2346 mmioFlush(This->hmmio, 0);
2347
2348 return AVIERR_OK;
2349 }
2350
2351 static HRESULT AVIFILE_SaveIndex(const IAVIFileImpl *This)
2352 {
2353 IAVIStreamImpl *pStream;
2354 AVIINDEXENTRY idx;
2355 MMCKINFO ck;
2356 DWORD nStream;
2357 LONG n;
2358
2359 ck.ckid = ckidAVINEWINDEX;
2360 ck.cksize = 0;
2361 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2362 return AVIERR_FILEWRITE;
2363
2364 if (This->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) {
2365 /* is interleaved -- write block of corresponding frames */
2366 LONG lInitialFrames = 0;
2367 LONG stepsize;
2368 LONG i;
2369
2370 if (This->ppStreams[0]->sInfo.dwSampleSize == 0)
2371 stepsize = 1;
2372 else
2373 stepsize = AVIStreamTimeToSample((PAVISTREAM)This->ppStreams[0], 1000000);
2374
2375 assert(stepsize > 0);
2376
2377 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2378 if (lInitialFrames < This->ppStreams[nStream]->sInfo.dwInitialFrames)
2379 lInitialFrames = This->ppStreams[nStream]->sInfo.dwInitialFrames;
2380 }
2381
2382 for (i = -lInitialFrames; i < (LONG)This->fInfo.dwLength - lInitialFrames;
2383 i += stepsize) {
2384 DWORD nFrame = lInitialFrames + i;
2385
2386 assert(nFrame < This->nIdxRecords);
2387
2388 idx.ckid = listtypeAVIRECORD;
2389 idx.dwFlags = AVIIF_LIST;
2390 idx.dwChunkLength = This->idxRecords[nFrame].dwChunkLength;
2391 idx.dwChunkOffset = This->idxRecords[nFrame].dwChunkOffset
2392 - This->dwMoviChunkPos;
2393 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2394 return AVIERR_FILEWRITE;
2395
2396 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2397 pStream = This->ppStreams[nStream];
2398
2399 /* heave we reached start of this stream? */
2400 if (-(LONG)pStream->sInfo.dwInitialFrames > i)
2401 continue;
2402
2403 if (pStream->sInfo.dwInitialFrames < lInitialFrames)
2404 nFrame -= (lInitialFrames - pStream->sInfo.dwInitialFrames);
2405
2406 /* reached end of this stream? */
2407 if (pStream->lLastFrame <= nFrame)
2408 continue;
2409
2410 if ((pStream->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
2411 pStream->sInfo.dwFormatChangeCount != 0 &&
2412 pStream->idxFmtChanges != NULL) {
2413 DWORD pos;
2414
2415 for (pos = 0; pos < pStream->sInfo.dwFormatChangeCount; pos++) {
2416 if (pStream->idxFmtChanges[pos].ckid == nFrame) {
2417 idx.dwFlags = AVIIF_NOTIME;
2418 idx.ckid = MAKEAVICKID(cktypePALchange, pStream->nStream);
2419 idx.dwChunkLength = pStream->idxFmtChanges[pos].dwChunkLength;
2420 idx.dwChunkOffset = pStream->idxFmtChanges[pos].dwChunkOffset
2421 - This->dwMoviChunkPos;
2422
2423 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2424 return AVIERR_FILEWRITE;
2425 break;
2426 }
2427 }
2428 } /* if have formatchanges */
2429
2430 idx.ckid = pStream->idxFrames[nFrame].ckid;
2431 idx.dwFlags = pStream->idxFrames[nFrame].dwFlags;
2432 idx.dwChunkLength = pStream->idxFrames[nFrame].dwChunkLength;
2433 idx.dwChunkOffset = pStream->idxFrames[nFrame].dwChunkOffset
2434 - This->dwMoviChunkPos;
2435 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2436 return AVIERR_FILEWRITE;
2437 }
2438 }
2439 } else {
2440 /* not interleaved -- write index for each stream at once */
2441 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2442 pStream = This->ppStreams[nStream];
2443
2444 for (n = 0; n <= pStream->lLastFrame; n++) {
2445 if ((pStream->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
2446 (pStream->sInfo.dwFormatChangeCount != 0)) {
2447 DWORD pos;
2448
2449 for (pos = 0; pos < pStream->sInfo.dwFormatChangeCount; pos++) {
2450 if (pStream->idxFmtChanges[pos].ckid == n) {
2451 idx.dwFlags = AVIIF_NOTIME;
2452 idx.ckid = MAKEAVICKID(cktypePALchange, pStream->nStream);
2453 idx.dwChunkLength = pStream->idxFmtChanges[pos].dwChunkLength;
2454 idx.dwChunkOffset =
2455 pStream->idxFmtChanges[pos].dwChunkOffset - This->dwMoviChunkPos;
2456 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2457 return AVIERR_FILEWRITE;
2458 break;
2459 }
2460 }
2461 } /* if have formatchanges */
2462
2463 idx.ckid = pStream->idxFrames[n].ckid;
2464 idx.dwFlags = pStream->idxFrames[n].dwFlags;
2465 idx.dwChunkLength = pStream->idxFrames[n].dwChunkLength;
2466 idx.dwChunkOffset = pStream->idxFrames[n].dwChunkOffset
2467 - This->dwMoviChunkPos;
2468
2469 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2470 return AVIERR_FILEWRITE;
2471 }
2472 }
2473 } /* if not interleaved */
2474
2475 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2476 return AVIERR_FILEWRITE;
2477
2478 return AVIERR_OK;
2479 }
2480
2481 static ULONG AVIFILE_SearchStream(const IAVIFileImpl *This, DWORD fcc, LONG lSkip)
2482 {
2483 UINT i;
2484 UINT nStream;
2485
2486 /* pre-condition */
2487 assert(lSkip >= 0);
2488
2489 if (fcc != 0) {
2490 /* search the number of the specified stream */
2491 nStream = (ULONG)-1;
2492 for (i = 0; i < This->fInfo.dwStreams; i++) {
2493 assert(This->ppStreams[i] != NULL);
2494
2495 if (This->ppStreams[i]->sInfo.fccType == fcc) {
2496 if (lSkip == 0) {
2497 nStream = i;
2498 break;
2499 } else
2500 lSkip--;
2501 }
2502 }
2503 } else
2504 nStream = lSkip;
2505
2506 return nStream;
2507 }
2508
2509 static void AVIFILE_UpdateInfo(IAVIFileImpl *This)
2510 {
2511 UINT i;
2512
2513 /* pre-conditions */
2514 assert(This != NULL);
2515
2516 This->fInfo.dwMaxBytesPerSec = 0;
2517 This->fInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
2518 This->fInfo.dwSuggestedBufferSize = 0;
2519 This->fInfo.dwWidth = 0;
2520 This->fInfo.dwHeight = 0;
2521 This->fInfo.dwScale = 0;
2522 This->fInfo.dwRate = 0;
2523 This->fInfo.dwLength = 0;
2524 This->dwInitialFrames = 0;
2525
2526 for (i = 0; i < This->fInfo.dwStreams; i++) {
2527 AVISTREAMINFOW *psi;
2528 DWORD n;
2529
2530 /* pre-conditions */
2531 assert(This->ppStreams[i] != NULL);
2532
2533 psi = &This->ppStreams[i]->sInfo;
2534 assert(psi->dwScale != 0);
2535 assert(psi->dwRate != 0);
2536
2537 if (i == 0) {
2538 /* use first stream timings as base */
2539 This->fInfo.dwScale = psi->dwScale;
2540 This->fInfo.dwRate = psi->dwRate;
2541 This->fInfo.dwLength = psi->dwLength;
2542 } else {
2543 n = AVIStreamSampleToSample((PAVISTREAM)This->ppStreams[0],
2544 (PAVISTREAM)This->ppStreams[i],psi->dwLength);
2545 if (This->fInfo.dwLength < n)
2546 This->fInfo.dwLength = n;
2547 }
2548
2549 if (This->dwInitialFrames < psi->dwInitialFrames)
2550 This->dwInitialFrames = psi->dwInitialFrames;
2551
2552 if (This->fInfo.dwSuggestedBufferSize < psi->dwSuggestedBufferSize)
2553 This->fInfo.dwSuggestedBufferSize = psi->dwSuggestedBufferSize;
2554
2555 if (psi->dwSampleSize != 0) {
2556 /* fixed sample size -- exact computation */
2557 This->fInfo.dwMaxBytesPerSec += MulDiv(psi->dwSampleSize, psi->dwRate,
2558 psi->dwScale);
2559 } else {
2560 /* variable sample size -- only upper limit */
2561 This->fInfo.dwMaxBytesPerSec += MulDiv(psi->dwSuggestedBufferSize,
2562 psi->dwRate, psi->dwScale);
2563
2564 /* update dimensions */
2565 n = psi->rcFrame.right - psi->rcFrame.left;
2566 if (This->fInfo.dwWidth < n)
2567 This->fInfo.dwWidth = n;
2568 n = psi->rcFrame.bottom - psi->rcFrame.top;
2569 if (This->fInfo.dwHeight < n)
2570 This->fInfo.dwHeight = n;
2571 }
2572 }
2573 }
2574
2575 static HRESULT AVIFILE_WriteBlock(IAVIStreamImpl *This, DWORD block,
2576 FOURCC ckid, DWORD flags, LPCVOID buffer,
2577 LONG size)
2578 {
2579 MMCKINFO ck;
2580
2581 ck.ckid = ckid;
2582 ck.cksize = size;
2583 ck.fccType = 0;
2584
2585 /* if no frame/block is already written, we must compute start of movi chunk */
2586 if (This->paf->dwMoviChunkPos == 0)
2587 AVIFILE_ComputeMoviStart(This->paf);
2588
2589 if (mmioSeek(This->paf->hmmio, This->paf->dwNextFramePos, SEEK_SET) == -1)
2590 return AVIERR_FILEWRITE;
2591
2592 if (mmioCreateChunk(This->paf->hmmio, &ck, 0) != S_OK)
2593 return AVIERR_FILEWRITE;
2594 if (buffer != NULL && size > 0) {
2595 if (mmioWrite(This->paf->hmmio, buffer, size) != size)
2596 return AVIERR_FILEWRITE;
2597 }
2598 if (mmioAscend(This->paf->hmmio, &ck, 0) != S_OK)
2599 return AVIERR_FILEWRITE;
2600
2601 This->paf->fDirty = TRUE;
2602 This->paf->dwNextFramePos = mmioSeek(This->paf->hmmio, 0, SEEK_CUR);
2603
2604 return AVIFILE_AddFrame(This, ckid, size,
2605 ck.dwDataOffset - 2 * sizeof(DWORD), flags);
2606 }
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