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[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 /* convert start sample to block,offset pair */
1091 AVIFILE_SamplesToBlock(This, &block, &offset);
1092
1093 /* convert samples to bytes */
1094 samples *= This->sInfo.dwSampleSize;
1095
1096 while (samples > 0 && buffersize > 0) {
1097 if (block != This->dwCurrentFrame) {
1098 hr = AVIFILE_ReadBlock(This, block, NULL, 0);
1099 if (FAILED(hr))
1100 return hr;
1101 }
1102
1103 size = min((DWORD)samples, (DWORD)buffersize);
1104 size = min(size, This->cbBuffer - offset);
1105 memcpy(buffer, ((BYTE*)&This->lpBuffer[2]) + offset, size);
1106
1107 block++;
1108 offset = 0;
1109 buffer = ((LPBYTE)buffer)+size;
1110 samples -= size;
1111 buffersize -= size;
1112
1113 /* fill out return parameters if given */
1114 if (bytesread != NULL)
1115 *bytesread += size;
1116 if (samplesread != NULL)
1117 *samplesread += size / This->sInfo.dwSampleSize;
1118 }
1119
1120 if (samples == 0)
1121 return AVIERR_OK;
1122 else
1123 return AVIERR_BUFFERTOOSMALL;
1124 } else {
1125 /* variable samplesize -- we can only read one full frame/block */
1126 if (samples > 1)
1127 samples = 1;
1128
1129 assert(start <= This->lLastFrame);
1130 size = This->idxFrames[start].dwChunkLength;
1131 if (buffer != NULL && buffersize >= size) {
1132 hr = AVIFILE_ReadBlock(This, start, buffer, size);
1133 if (FAILED(hr))
1134 return hr;
1135 } else if (buffer != NULL)
1136 return AVIERR_BUFFERTOOSMALL;
1137
1138 /* fill out return parameters if given */
1139 if (bytesread != NULL)
1140 *bytesread = size;
1141 if (samplesread != NULL)
1142 *samplesread = samples;
1143
1144 return AVIERR_OK;
1145 }
1146 }
1147
1148 static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream *iface, LONG start,
1149 LONG samples, LPVOID buffer,
1150 LONG buffersize, DWORD flags,
1151 LPLONG sampwritten,
1152 LPLONG byteswritten)
1153 {
1154 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1155
1156 FOURCC ckid;
1157 HRESULT hr;
1158
1159 TRACE("(%p,%d,%d,%p,%d,0x%08X,%p,%p)\n", iface, start, samples,
1160 buffer, buffersize, flags, sampwritten, byteswritten);
1161
1162 /* clear return parameters if given */
1163 if (sampwritten != NULL)
1164 *sampwritten = 0;
1165 if (byteswritten != NULL)
1166 *byteswritten = 0;
1167
1168 /* check parameters */
1169 if (buffer == NULL && (buffersize > 0 || samples > 0))
1170 return AVIERR_BADPARAM;
1171
1172 /* Have we write permission? */
1173 if ((This->paf->uMode & MMIO_RWMODE) == 0)
1174 return AVIERR_READONLY;
1175
1176 switch (This->sInfo.fccType) {
1177 case streamtypeAUDIO:
1178 ckid = MAKEAVICKID(cktypeWAVEbytes, This->nStream);
1179 break;
1180 default:
1181 if ((flags & AVIIF_KEYFRAME) && buffersize != 0)
1182 ckid = MAKEAVICKID(cktypeDIBbits, This->nStream);
1183 else
1184 ckid = MAKEAVICKID(cktypeDIBcompressed, This->nStream);
1185 break;
1186 };
1187
1188 /* append to end of stream? */
1189 if (start == -1) {
1190 if (This->lLastFrame == -1)
1191 start = This->sInfo.dwStart;
1192 else
1193 start = This->sInfo.dwLength;
1194 } else if (This->lLastFrame == -1)
1195 This->sInfo.dwStart = start;
1196
1197 if (This->sInfo.dwSampleSize != 0) {
1198 /* fixed sample size -- audio like */
1199 if (samples * This->sInfo.dwSampleSize != buffersize)
1200 return AVIERR_BADPARAM;
1201
1202 /* Couldn't skip audio-like data -- User must supply appropriate silence */
1203 if (This->sInfo.dwLength != start)
1204 return AVIERR_UNSUPPORTED;
1205
1206 /* Convert position to frame/block */
1207 start = This->lLastFrame + 1;
1208
1209 if ((This->paf->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) == 0) {
1210 FIXME(": not interleaved, could collect audio data!\n");
1211 }
1212 } else {
1213 /* variable sample size -- video like */
1214 if (samples > 1)
1215 return AVIERR_UNSUPPORTED;
1216
1217 /* must we fill up with empty frames? */
1218 if (This->lLastFrame != -1) {
1219 FOURCC ckid2 = MAKEAVICKID(cktypeDIBcompressed, This->nStream);
1220
1221 while (start > This->lLastFrame + 1) {
1222 hr = AVIFILE_WriteBlock(This, This->lLastFrame + 1, ckid2, 0, NULL, 0);
1223 if (FAILED(hr))
1224 return hr;
1225 }
1226 }
1227 }
1228
1229 /* write the block now */
1230 hr = AVIFILE_WriteBlock(This, start, ckid, flags, buffer, buffersize);
1231 if (SUCCEEDED(hr)) {
1232 /* fill out return parameters if given */
1233 if (sampwritten != NULL)
1234 *sampwritten = samples;
1235 if (byteswritten != NULL)
1236 *byteswritten = buffersize;
1237 }
1238
1239 return hr;
1240 }
1241
1242 static HRESULT WINAPI IAVIStream_fnDelete(IAVIStream *iface, LONG start,
1243 LONG samples)
1244 {
1245 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1246
1247 FIXME("(%p,%d,%d): stub\n", iface, start, samples);
1248
1249 /* check parameters */
1250 if (start < 0 || samples < 0)
1251 return AVIERR_BADPARAM;
1252
1253 /* Delete before start of stream? */
1254 if (start + samples < This->sInfo.dwStart)
1255 return AVIERR_OK;
1256
1257 /* Delete after end of stream? */
1258 if (start > This->sInfo.dwLength)
1259 return AVIERR_OK;
1260
1261 /* For the rest we need write permissions */
1262 if ((This->paf->uMode & MMIO_RWMODE) == 0)
1263 return AVIERR_READONLY;
1264
1265 /* 1. overwrite the data with JUNK
1266 *
1267 * if ISINTERLEAVED {
1268 * 2. concat all neighboured JUNK-blocks in this record to one
1269 * 3. if this record only contains JUNK and is at end set dwNextFramePos
1270 * to start of this record, repeat this.
1271 * } else {
1272 * 2. concat all neighboured JUNK-blocks.
1273 * 3. if the JUNK block is at the end, then set dwNextFramePos to
1274 * start of this block.
1275 * }
1276 */
1277
1278 return AVIERR_UNSUPPORTED;
1279 }
1280
1281 static HRESULT WINAPI IAVIStream_fnReadData(IAVIStream *iface, DWORD fcc,
1282 LPVOID lp, LPLONG lpread)
1283 {
1284 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1285
1286 TRACE("(%p,0x%08X,%p,%p)\n", iface, fcc, lp, lpread);
1287
1288 if (fcc == ckidSTREAMHANDLERDATA) {
1289 if (This->lpHandlerData != NULL && This->cbHandlerData > 0) {
1290 if (lp == NULL || *lpread <= 0) {
1291 *lpread = This->cbHandlerData;
1292 return AVIERR_OK;
1293 }
1294
1295 memcpy(lp, This->lpHandlerData, min(This->cbHandlerData, *lpread));
1296 if (*lpread < This->cbHandlerData)
1297 return AVIERR_BUFFERTOOSMALL;
1298 return AVIERR_OK;
1299 } else
1300 return AVIERR_NODATA;
1301 } else
1302 return ReadExtraChunk(&This->extra, fcc, lp, lpread);
1303 }
1304
1305 static HRESULT WINAPI IAVIStream_fnWriteData(IAVIStream *iface, DWORD fcc,
1306 LPVOID lp, LONG size)
1307 {
1308 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
1309
1310 TRACE("(%p,0x%08x,%p,%d)\n", iface, fcc, lp, size);
1311
1312 /* check parameters */
1313 if (lp == NULL)
1314 return AVIERR_BADPARAM;
1315 if (size <= 0)
1316 return AVIERR_BADSIZE;
1317
1318 /* need write permission */
1319 if ((This->paf->uMode & MMIO_RWMODE) == 0)
1320 return AVIERR_READONLY;
1321
1322 /* already written something to this file? */
1323 if (This->paf->dwMoviChunkPos != 0) {
1324 /* the data will be inserted before the 'movi' chunk, so check for
1325 * enough space */
1326 DWORD dwPos = AVIFILE_ComputeMoviStart(This->paf);
1327
1328 /* ckid,size => 2 * sizeof(DWORD) */
1329 dwPos += 2 * sizeof(DWORD) + size;
1330 if (size >= This->paf->dwMoviChunkPos - 2 * sizeof(DWORD))
1331 return AVIERR_UNSUPPORTED; /* not enough space left */
1332 }
1333
1334 This->paf->fDirty = TRUE;
1335
1336 if (fcc == ckidSTREAMHANDLERDATA) {
1337 if (This->lpHandlerData != NULL) {
1338 FIXME(": handler data already set -- overwirte?\n");
1339 return AVIERR_UNSUPPORTED;
1340 }
1341
1342 This->lpHandlerData = HeapAlloc(GetProcessHeap(), 0, size);
1343 if (This->lpHandlerData == NULL)
1344 return AVIERR_MEMORY;
1345 This->cbHandlerData = size;
1346 memcpy(This->lpHandlerData, lp, size);
1347
1348 return AVIERR_OK;
1349 } else
1350 return WriteExtraChunk(&This->extra, fcc, lp, size);
1351 }
1352
1353 static HRESULT WINAPI IAVIStream_fnSetInfo(IAVIStream *iface,
1354 LPAVISTREAMINFOW info, LONG infolen)
1355 {
1356 FIXME("(%p,%p,%d): stub\n", iface, info, infolen);
1357
1358 return E_FAIL;
1359 }
1360
1361 /***********************************************************************/
1362
1363 static HRESULT AVIFILE_AddFrame(IAVIStreamImpl *This, DWORD ckid, DWORD size, DWORD offset, DWORD flags)
1364 {
1365 /* pre-conditions */
1366 assert(This != NULL);
1367
1368 switch (TWOCCFromFOURCC(ckid)) {
1369 case cktypeDIBbits:
1370 if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
1371 flags |= AVIIF_KEYFRAME;
1372 break;
1373 case cktypeDIBcompressed:
1374 if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
1375 flags &= ~AVIIF_KEYFRAME;
1376 break;
1377 case cktypePALchange:
1378 if (This->sInfo.fccType != streamtypeVIDEO) {
1379 ERR(": found palette change in non-video stream!\n");
1380 return AVIERR_BADFORMAT;
1381 }
1382 This->sInfo.dwFlags |= AVISTREAMINFO_FORMATCHANGES;
1383 This->sInfo.dwFormatChangeCount++;
1384
1385 if (This->idxFmtChanges == NULL || This->sInfo.dwFormatChangeCount < This->nIdxFmtChanges) {
1386 UINT n = This->sInfo.dwFormatChangeCount;
1387
1388 This->nIdxFmtChanges += 16;
1389 if (This->idxFmtChanges == NULL)
1390 This->idxFmtChanges =
1391 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->nIdxFmtChanges * sizeof(AVIINDEXENTRY));
1392 else
1393 This->idxFmtChanges =
1394 HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->idxFmtChanges,
1395 This->nIdxFmtChanges * sizeof(AVIINDEXENTRY));
1396 if (This->idxFmtChanges == NULL)
1397 return AVIERR_MEMORY;
1398
1399 This->idxFmtChanges[n].ckid = This->lLastFrame;
1400 This->idxFmtChanges[n].dwFlags = 0;
1401 This->idxFmtChanges[n].dwChunkOffset = offset;
1402 This->idxFmtChanges[n].dwChunkLength = size;
1403
1404 return AVIERR_OK;
1405 }
1406 break;
1407 case cktypeWAVEbytes:
1408 if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
1409 flags |= AVIIF_KEYFRAME;
1410 break;
1411 default:
1412 WARN(": unknown TWOCC 0x%04X found\n", TWOCCFromFOURCC(ckid));
1413 break;
1414 };
1415
1416 /* first frame is always a keyframe */
1417 if (This->lLastFrame == -1)
1418 flags |= AVIIF_KEYFRAME;
1419
1420 if (This->sInfo.dwSuggestedBufferSize < size)
1421 This->sInfo.dwSuggestedBufferSize = size;
1422
1423 /* get memory for index */
1424 if (This->idxFrames == NULL || This->lLastFrame + 1 >= This->nIdxFrames) {
1425 This->nIdxFrames += 512;
1426 if (This->idxFrames == NULL)
1427 This->idxFrames = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->nIdxFrames * sizeof(AVIINDEXENTRY));
1428 else
1429 This->idxFrames = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->idxFrames,
1430 This->nIdxFrames * sizeof(AVIINDEXENTRY));
1431 if (This->idxFrames == NULL)
1432 return AVIERR_MEMORY;
1433 }
1434
1435 This->lLastFrame++;
1436 This->idxFrames[This->lLastFrame].ckid = ckid;
1437 This->idxFrames[This->lLastFrame].dwFlags = flags;
1438 This->idxFrames[This->lLastFrame].dwChunkOffset = offset;
1439 This->idxFrames[This->lLastFrame].dwChunkLength = size;
1440
1441 /* update AVISTREAMINFO structure if necessary */
1442 if (This->sInfo.dwLength <= This->lLastFrame)
1443 This->sInfo.dwLength = This->lLastFrame + 1;
1444
1445 return AVIERR_OK;
1446 }
1447
1448 static HRESULT AVIFILE_AddRecord(IAVIFileImpl *This)
1449 {
1450 /* pre-conditions */
1451 assert(This != NULL && This->ppStreams[0] != NULL);
1452
1453 if (This->idxRecords == NULL || This->cbIdxRecords == 0) {
1454 This->cbIdxRecords += 1024 * sizeof(AVIINDEXENTRY);
1455 This->idxRecords = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->cbIdxRecords);
1456 if (This->idxRecords == NULL)
1457 return AVIERR_MEMORY;
1458 }
1459
1460 assert(This->nIdxRecords < This->cbIdxRecords/sizeof(AVIINDEXENTRY));
1461
1462 This->idxRecords[This->nIdxRecords].ckid = listtypeAVIRECORD;
1463 This->idxRecords[This->nIdxRecords].dwFlags = AVIIF_LIST;
1464 This->idxRecords[This->nIdxRecords].dwChunkOffset =
1465 This->ckLastRecord.dwDataOffset - 2 * sizeof(DWORD);
1466 This->idxRecords[This->nIdxRecords].dwChunkLength =
1467 This->ckLastRecord.cksize;
1468 This->nIdxRecords++;
1469
1470 return AVIERR_OK;
1471 }
1472
1473 static DWORD AVIFILE_ComputeMoviStart(IAVIFileImpl *This)
1474 {
1475 DWORD dwPos;
1476 DWORD nStream;
1477
1478 /* RIFF,hdrl,movi,avih => (3 * 3 + 2) * sizeof(DWORD) = 11 * sizeof(DWORD) */
1479 dwPos = 11 * sizeof(DWORD) + sizeof(MainAVIHeader);
1480
1481 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
1482 IAVIStreamImpl *pStream = This->ppStreams[nStream];
1483
1484 /* strl,strh,strf => (3 + 2 * 2) * sizeof(DWORD) = 7 * sizeof(DWORD) */
1485 dwPos += 7 * sizeof(DWORD) + sizeof(AVIStreamHeader);
1486 dwPos += ((pStream->cbFormat + 1) & ~1U);
1487 if (pStream->lpHandlerData != NULL && pStream->cbHandlerData > 0)
1488 dwPos += 2 * sizeof(DWORD) + ((pStream->cbHandlerData + 1) & ~1U);
1489 if (lstrlenW(pStream->sInfo.szName) > 0)
1490 dwPos += 2 * sizeof(DWORD) + ((lstrlenW(pStream->sInfo.szName) + 1) & ~1U);
1491 }
1492
1493 if (This->dwMoviChunkPos == 0) {
1494 This->dwNextFramePos = dwPos;
1495
1496 /* pad to multiple of AVI_HEADERSIZE only if we are more than 8 bytes away from it */
1497 if (((dwPos + AVI_HEADERSIZE) & ~(AVI_HEADERSIZE - 1)) - dwPos > 2 * sizeof(DWORD))
1498 This->dwNextFramePos = (dwPos + AVI_HEADERSIZE) & ~(AVI_HEADERSIZE - 1);
1499
1500 This->dwMoviChunkPos = This->dwNextFramePos - sizeof(DWORD);
1501 }
1502
1503 return dwPos;
1504 }
1505
1506 static void AVIFILE_ConstructAVIStream(IAVIFileImpl *paf, DWORD nr, const AVISTREAMINFOW *asi)
1507 {
1508 IAVIStreamImpl *pstream;
1509
1510 /* pre-conditions */
1511 assert(paf != NULL);
1512 assert(nr < MAX_AVISTREAMS);
1513 assert(paf->ppStreams[nr] != NULL);
1514
1515 pstream = paf->ppStreams[nr];
1516
1517 pstream->lpVtbl = &iavist;
1518 pstream->ref = 0;
1519 pstream->paf = paf;
1520 pstream->nStream = nr;
1521 pstream->dwCurrentFrame = (DWORD)-1;
1522 pstream->lLastFrame = -1;
1523
1524 if (asi != NULL) {
1525 memcpy(&pstream->sInfo, asi, sizeof(pstream->sInfo));
1526
1527 if (asi->dwLength > 0) {
1528 /* pre-allocate mem for frame-index structure */
1529 pstream->idxFrames =
1530 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, asi->dwLength * sizeof(AVIINDEXENTRY));
1531 if (pstream->idxFrames != NULL)
1532 pstream->nIdxFrames = asi->dwLength;
1533 }
1534 if (asi->dwFormatChangeCount > 0) {
1535 /* pre-allocate mem for formatchange-index structure */
1536 pstream->idxFmtChanges =
1537 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, asi->dwFormatChangeCount * sizeof(AVIINDEXENTRY));
1538 if (pstream->idxFmtChanges != NULL)
1539 pstream->nIdxFmtChanges = asi->dwFormatChangeCount;
1540 }
1541
1542 /* These values will be computed */
1543 pstream->sInfo.dwLength = 0;
1544 pstream->sInfo.dwSuggestedBufferSize = 0;
1545 pstream->sInfo.dwFormatChangeCount = 0;
1546 pstream->sInfo.dwEditCount = 1;
1547 if (pstream->sInfo.dwSampleSize > 0)
1548 SetRectEmpty(&pstream->sInfo.rcFrame);
1549 }
1550
1551 pstream->sInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
1552 }
1553
1554 static void AVIFILE_DestructAVIStream(IAVIStreamImpl *This)
1555 {
1556 /* pre-conditions */
1557 assert(This != NULL);
1558
1559 This->dwCurrentFrame = (DWORD)-1;
1560 This->lLastFrame = -1;
1561 This->paf = NULL;
1562 if (This->idxFrames != NULL) {
1563 HeapFree(GetProcessHeap(), 0, This->idxFrames);
1564 This->idxFrames = NULL;
1565 This->nIdxFrames = 0;
1566 }
1567 HeapFree(GetProcessHeap(), 0, This->idxFmtChanges);
1568 This->idxFmtChanges = NULL;
1569 if (This->lpBuffer != NULL) {
1570 HeapFree(GetProcessHeap(), 0, This->lpBuffer);
1571 This->lpBuffer = NULL;
1572 This->cbBuffer = 0;
1573 }
1574 if (This->lpHandlerData != NULL) {
1575 HeapFree(GetProcessHeap(), 0, This->lpHandlerData);
1576 This->lpHandlerData = NULL;
1577 This->cbHandlerData = 0;
1578 }
1579 if (This->extra.lp != NULL) {
1580 HeapFree(GetProcessHeap(), 0, This->extra.lp);
1581 This->extra.lp = NULL;
1582 This->extra.cb = 0;
1583 }
1584 if (This->lpFormat != NULL) {
1585 HeapFree(GetProcessHeap(), 0, This->lpFormat);
1586 This->lpFormat = NULL;
1587 This->cbFormat = 0;
1588 }
1589 }
1590
1591 static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
1592 {
1593 MainAVIHeader MainAVIHdr;
1594 MMCKINFO ckRIFF;
1595 MMCKINFO ckLIST1;
1596 MMCKINFO ckLIST2;
1597 MMCKINFO ck;
1598 IAVIStreamImpl *pStream;
1599 DWORD nStream;
1600 HRESULT hr;
1601
1602 if (This->hmmio == NULL)
1603 return AVIERR_FILEOPEN;
1604
1605 /* initialize stream ptr's */
1606 memset(This->ppStreams, 0, sizeof(This->ppStreams));
1607
1608 /* try to get "RIFF" chunk -- must not be at beginning of file! */
1609 ckRIFF.fccType = formtypeAVI;
1610 if (mmioDescend(This->hmmio, &ckRIFF, NULL, MMIO_FINDRIFF) != S_OK) {
1611 ERR(": not an AVI!\n");
1612 return AVIERR_FILEREAD;
1613 }
1614
1615 /* get "LIST" "hdrl" */
1616 ckLIST1.fccType = listtypeAVIHEADER;
1617 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ckLIST1, &ckRIFF, MMIO_FINDLIST);
1618 if (FAILED(hr))
1619 return hr;
1620
1621 /* get "avih" chunk */
1622 ck.ckid = ckidAVIMAINHDR;
1623 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckLIST1, MMIO_FINDCHUNK);
1624 if (FAILED(hr))
1625 return hr;
1626
1627 if (ck.cksize != sizeof(MainAVIHdr)) {
1628 ERR(": invalid size of %d for MainAVIHeader!\n", ck.cksize);
1629 return AVIERR_BADFORMAT;
1630 }
1631 if (mmioRead(This->hmmio, (HPSTR)&MainAVIHdr, ck.cksize) != ck.cksize)
1632 return AVIERR_FILEREAD;
1633
1634 /* check for MAX_AVISTREAMS limit */
1635 if (MainAVIHdr.dwStreams > MAX_AVISTREAMS) {
1636 WARN("file contains %u streams, but only supports %d -- change MAX_AVISTREAMS!\n", MainAVIHdr.dwStreams, MAX_AVISTREAMS);
1637 return AVIERR_UNSUPPORTED;
1638 }
1639
1640 /* adjust permissions if copyrighted material in file */
1641 if (MainAVIHdr.dwFlags & AVIFILEINFO_COPYRIGHTED) {
1642 This->uMode &= ~MMIO_RWMODE;
1643 This->uMode |= MMIO_READ;
1644 }
1645
1646 /* convert MainAVIHeader into AVIFILINFOW */
1647 memset(&This->fInfo, 0, sizeof(This->fInfo));
1648 This->fInfo.dwRate = MainAVIHdr.dwMicroSecPerFrame;
1649 This->fInfo.dwScale = 1000000;
1650 This->fInfo.dwMaxBytesPerSec = MainAVIHdr.dwMaxBytesPerSec;
1651 This->fInfo.dwFlags = MainAVIHdr.dwFlags;
1652 This->fInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
1653 This->fInfo.dwLength = MainAVIHdr.dwTotalFrames;
1654 This->fInfo.dwStreams = MainAVIHdr.dwStreams;
1655 This->fInfo.dwSuggestedBufferSize = MainAVIHdr.dwSuggestedBufferSize;
1656 This->fInfo.dwWidth = MainAVIHdr.dwWidth;
1657 This->fInfo.dwHeight = MainAVIHdr.dwHeight;
1658 LoadStringW(AVIFILE_hModule, IDS_AVIFILETYPE, This->fInfo.szFileType,
1659 sizeof(This->fInfo.szFileType)/sizeof(This->fInfo.szFileType[0]));
1660
1661 /* go back to into header list */
1662 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
1663 return AVIERR_FILEREAD;
1664
1665 /* foreach stream exists a "LIST","strl" chunk */
1666 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
1667 /* get next nested chunk in this "LIST","strl" */
1668 if (mmioDescend(This->hmmio, &ckLIST2, &ckLIST1, 0) != S_OK)
1669 return AVIERR_FILEREAD;
1670
1671 /* nested chunk must be of type "LIST","strl" -- when not normally JUNK */
1672 if (ckLIST2.ckid == FOURCC_LIST &&
1673 ckLIST2.fccType == listtypeSTREAMHEADER) {
1674 pStream = This->ppStreams[nStream] =
1675 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IAVIStreamImpl));
1676 if (pStream == NULL)
1677 return AVIERR_MEMORY;
1678 AVIFILE_ConstructAVIStream(This, nStream, NULL);
1679
1680 ck.ckid = 0;
1681 while (mmioDescend(This->hmmio, &ck, &ckLIST2, 0) == S_OK) {
1682 switch (ck.ckid) {
1683 case ckidSTREAMHANDLERDATA:
1684 if (pStream->lpHandlerData != NULL)
1685 return AVIERR_BADFORMAT;
1686 pStream->lpHandlerData = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1687 if (pStream->lpHandlerData == NULL)
1688 return AVIERR_MEMORY;
1689 pStream->cbHandlerData = ck.cksize;
1690
1691 if (mmioRead(This->hmmio, pStream->lpHandlerData, ck.cksize) != ck.cksize)
1692 return AVIERR_FILEREAD;
1693 break;
1694 case ckidSTREAMFORMAT:
1695 if (pStream->lpFormat != NULL)
1696 return AVIERR_BADFORMAT;
1697 if (ck.cksize == 0)
1698 break;
1699
1700 pStream->lpFormat = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1701 if (pStream->lpFormat == NULL)
1702 return AVIERR_MEMORY;
1703 pStream->cbFormat = ck.cksize;
1704
1705 if (mmioRead(This->hmmio, pStream->lpFormat, ck.cksize) != ck.cksize)
1706 return AVIERR_FILEREAD;
1707
1708 if (pStream->sInfo.fccType == streamtypeVIDEO) {
1709 LPBITMAPINFOHEADER lpbi = pStream->lpFormat;
1710
1711 /* some corrections to the video format */
1712 if (lpbi->biClrUsed == 0 && lpbi->biBitCount <= 8)
1713 lpbi->biClrUsed = 1u << lpbi->biBitCount;
1714 if (lpbi->biCompression == BI_RGB && lpbi->biSizeImage == 0)
1715 lpbi->biSizeImage = DIBWIDTHBYTES(*lpbi) * lpbi->biHeight;
1716 if (lpbi->biCompression != BI_RGB && lpbi->biBitCount == 8) {
1717 if (pStream->sInfo.fccHandler == mmioFOURCC('R','L','E','0') ||
1718 pStream->sInfo.fccHandler == mmioFOURCC('R','L','E',' '))
1719 lpbi->biCompression = BI_RLE8;
1720 }
1721 if (lpbi->biCompression == BI_RGB &&
1722 (pStream->sInfo.fccHandler == 0 ||
1723 pStream->sInfo.fccHandler == mmioFOURCC('N','O','N','E')))
1724 pStream->sInfo.fccHandler = comptypeDIB;
1725
1726 /* init rcFrame if it's empty */
1727 if (IsRectEmpty(&pStream->sInfo.rcFrame))
1728 SetRect(&pStream->sInfo.rcFrame, 0, 0, lpbi->biWidth, lpbi->biHeight);
1729 }
1730 break;
1731 case ckidSTREAMHEADER:
1732 {
1733 static const WCHAR streamTypeFmt[] = {'%','4','.','4','h','s',0};
1734
1735 AVIStreamHeader streamHdr;
1736 WCHAR szType[25];
1737 WCHAR streamNameFmt[25];
1738 UINT count;
1739 LONG n = ck.cksize;
1740
1741 if (ck.cksize > sizeof(streamHdr))
1742 n = sizeof(streamHdr);
1743
1744 if (mmioRead(This->hmmio, (HPSTR)&streamHdr, n) != n)
1745 return AVIERR_FILEREAD;
1746
1747 pStream->sInfo.fccType = streamHdr.fccType;
1748 pStream->sInfo.fccHandler = streamHdr.fccHandler;
1749 pStream->sInfo.dwFlags = streamHdr.dwFlags;
1750 pStream->sInfo.wPriority = streamHdr.wPriority;
1751 pStream->sInfo.wLanguage = streamHdr.wLanguage;
1752 pStream->sInfo.dwInitialFrames = streamHdr.dwInitialFrames;
1753 pStream->sInfo.dwScale = streamHdr.dwScale;
1754 pStream->sInfo.dwRate = streamHdr.dwRate;
1755 pStream->sInfo.dwStart = streamHdr.dwStart;
1756 pStream->sInfo.dwLength = streamHdr.dwLength;
1757 pStream->sInfo.dwSuggestedBufferSize =
1758 streamHdr.dwSuggestedBufferSize;
1759 pStream->sInfo.dwQuality = streamHdr.dwQuality;
1760 pStream->sInfo.dwSampleSize = streamHdr.dwSampleSize;
1761 pStream->sInfo.rcFrame.left = streamHdr.rcFrame.left;
1762 pStream->sInfo.rcFrame.top = streamHdr.rcFrame.top;
1763 pStream->sInfo.rcFrame.right = streamHdr.rcFrame.right;
1764 pStream->sInfo.rcFrame.bottom = streamHdr.rcFrame.bottom;
1765 pStream->sInfo.dwEditCount = 0;
1766 pStream->sInfo.dwFormatChangeCount = 0;
1767
1768 /* generate description for stream like "filename.avi Type #n" */
1769 if (streamHdr.fccType == streamtypeVIDEO)
1770 LoadStringW(AVIFILE_hModule, IDS_VIDEO, szType, sizeof(szType)/sizeof(szType[0]));
1771 else if (streamHdr.fccType == streamtypeAUDIO)
1772 LoadStringW(AVIFILE_hModule, IDS_AUDIO, szType, sizeof(szType)/sizeof(szType[0]));
1773 else
1774 wsprintfW(szType, streamTypeFmt, (char*)&streamHdr.fccType);
1775
1776 /* get count of this streamtype up to this stream */
1777 count = 0;
1778 for (n = nStream; 0 <= n; n--) {
1779 if (This->ppStreams[n]->sInfo.fccHandler == streamHdr.fccType)
1780 count++;
1781 }
1782
1783 memset(pStream->sInfo.szName, 0, sizeof(pStream->sInfo.szName));
1784
1785 LoadStringW(AVIFILE_hModule, IDS_AVISTREAMFORMAT, streamNameFmt, sizeof(streamNameFmt)/sizeof(streamNameFmt[0]));
1786
1787 /* FIXME: avoid overflow -- better use wsnprintfW, which doesn't exists ! */
1788 wsprintfW(pStream->sInfo.szName, streamNameFmt,
1789 AVIFILE_BasenameW(This->szFileName), szType, count);
1790 }
1791 break;
1792 case ckidSTREAMNAME:
1793 { /* streamname will be saved as ASCII string */
1794 LPSTR str = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
1795 if (str == NULL)
1796 return AVIERR_MEMORY;
1797
1798 if (mmioRead(This->hmmio, str, ck.cksize) != ck.cksize)
1799 {
1800 HeapFree(GetProcessHeap(), 0, str);
1801 return AVIERR_FILEREAD;
1802 }
1803
1804 MultiByteToWideChar(CP_ACP, 0, str, -1, pStream->sInfo.szName,
1805 sizeof(pStream->sInfo.szName)/sizeof(pStream->sInfo.szName[0]));
1806
1807 HeapFree(GetProcessHeap(), 0, str);
1808 }
1809 break;
1810 case ckidAVIPADDING:
1811 case mmioFOURCC('p','a','d','d'):
1812 break;
1813 default:
1814 WARN(": found extra chunk 0x%08X\n", ck.ckid);
1815 hr = ReadChunkIntoExtra(&pStream->extra, This->hmmio, &ck);
1816 if (FAILED(hr))
1817 return hr;
1818 };
1819
1820 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
1821 return AVIERR_FILEREAD;
1822 }
1823 } else {
1824 /* nested chunks in "LIST","hdrl" which are not of type "LIST","strl" */
1825 hr = ReadChunkIntoExtra(&This->fileextra, This->hmmio, &ckLIST2);
1826 if (FAILED(hr))
1827 return hr;
1828 }
1829 if (mmioAscend(This->hmmio, &ckLIST2, 0) != S_OK)
1830 return AVIERR_FILEREAD;
1831 }
1832
1833 /* read any extra headers in "LIST","hdrl" */
1834 FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckLIST1, 0);
1835 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
1836 return AVIERR_FILEREAD;
1837
1838 /* search "LIST","movi" chunk in "RIFF","AVI " */
1839 ckLIST1.fccType = listtypeAVIMOVIE;
1840 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ckLIST1, &ckRIFF,
1841 MMIO_FINDLIST);
1842 if (FAILED(hr))
1843 return hr;
1844
1845 This->dwMoviChunkPos = ckLIST1.dwDataOffset;
1846 This->dwIdxChunkPos = ckLIST1.cksize + ckLIST1.dwDataOffset;
1847 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
1848 return AVIERR_FILEREAD;
1849
1850 /* try to find an index */
1851 ck.ckid = ckidAVINEWINDEX;
1852 hr = FindChunkAndKeepExtras(&This->fileextra, This->hmmio,
1853 &ck, &ckRIFF, MMIO_FINDCHUNK);
1854 if (SUCCEEDED(hr) && ck.cksize > 0) {
1855 if (FAILED(AVIFILE_LoadIndex(This, ck.cksize, ckLIST1.dwDataOffset)))
1856 This->fInfo.dwFlags &= ~AVIFILEINFO_HASINDEX;
1857 }
1858
1859 /* when we haven't found an index or it's bad, then build one
1860 * by parsing 'movi' chunk */
1861 if ((This->fInfo.dwFlags & AVIFILEINFO_HASINDEX) == 0) {
1862 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++)
1863 This->ppStreams[nStream]->lLastFrame = -1;
1864
1865 if (mmioSeek(This->hmmio, ckLIST1.dwDataOffset + sizeof(DWORD), SEEK_SET) == -1) {
1866 ERR(": Oops, can't seek back to 'movi' chunk!\n");
1867 return AVIERR_FILEREAD;
1868 }
1869
1870 /* seek through the 'movi' list until end */
1871 while (mmioDescend(This->hmmio, &ck, &ckLIST1, 0) == S_OK) {
1872 if (ck.ckid != FOURCC_LIST) {
1873 if (mmioAscend(This->hmmio, &ck, 0) == S_OK) {
1874 nStream = StreamFromFOURCC(ck.ckid);
1875
1876 if (nStream > This->fInfo.dwStreams)
1877 return AVIERR_BADFORMAT;
1878
1879 AVIFILE_AddFrame(This->ppStreams[nStream], ck.ckid, ck.cksize,
1880 ck.dwDataOffset - 2 * sizeof(DWORD), 0);
1881 } else {
1882 nStream = StreamFromFOURCC(ck.ckid);
1883 WARN(": file seems to be truncated!\n");
1884 if (nStream <= This->fInfo.dwStreams &&
1885 This->ppStreams[nStream]->sInfo.dwSampleSize > 0) {
1886 ck.cksize = mmioSeek(This->hmmio, 0, SEEK_END);
1887 if (ck.cksize != -1) {
1888 ck.cksize -= ck.dwDataOffset;
1889 ck.cksize &= ~(This->ppStreams[nStream]->sInfo.dwSampleSize - 1);
1890
1891 AVIFILE_AddFrame(This->ppStreams[nStream], ck.ckid, ck.cksize,
1892 ck.dwDataOffset - 2 * sizeof(DWORD), 0);
1893 }
1894 }
1895 }
1896 }
1897 }
1898 }
1899
1900 /* find other chunks */
1901 FindChunkAndKeepExtras(&This->fileextra, This->hmmio, &ck, &ckRIFF, 0);
1902
1903 return AVIERR_OK;
1904 }
1905
1906 static HRESULT AVIFILE_LoadIndex(const IAVIFileImpl *This, DWORD size, DWORD offset)
1907 {
1908 AVIINDEXENTRY *lp;
1909 DWORD pos, n;
1910 HRESULT hr = AVIERR_OK;
1911 BOOL bAbsolute = TRUE;
1912
1913 lp = HeapAlloc(GetProcessHeap(), 0, IDX_PER_BLOCK * sizeof(AVIINDEXENTRY));
1914 if (lp == NULL)
1915 return AVIERR_MEMORY;
1916
1917 /* adjust limits for index tables, so that inserting will be faster */
1918 for (n = 0; n < This->fInfo.dwStreams; n++) {
1919 IAVIStreamImpl *pStream = This->ppStreams[n];
1920
1921 pStream->lLastFrame = -1;
1922
1923 if (pStream->idxFrames != NULL) {
1924 HeapFree(GetProcessHeap(), 0, pStream->idxFrames);
1925 pStream->idxFrames = NULL;
1926 pStream->nIdxFrames = 0;
1927 }
1928
1929 if (pStream->sInfo.dwSampleSize != 0) {
1930 if (n > 0 && This->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) {
1931 pStream->nIdxFrames = This->ppStreams[0]->nIdxFrames;
1932 } else if (pStream->sInfo.dwSuggestedBufferSize) {
1933 pStream->nIdxFrames =
1934 pStream->sInfo.dwLength / pStream->sInfo.dwSuggestedBufferSize;
1935 }
1936 } else
1937 pStream->nIdxFrames = pStream->sInfo.dwLength;
1938
1939 pStream->idxFrames =
1940 HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, pStream->nIdxFrames * sizeof(AVIINDEXENTRY));
1941 if (pStream->idxFrames == NULL && pStream->nIdxFrames > 0) {
1942 pStream->nIdxFrames = 0;
1943 HeapFree(GetProcessHeap(), 0, lp);
1944 return AVIERR_MEMORY;
1945 }
1946 }
1947
1948 pos = (DWORD)-1;
1949 while (size != 0) {
1950 LONG read = min(IDX_PER_BLOCK * sizeof(AVIINDEXENTRY), size);
1951
1952 if (mmioRead(This->hmmio, (HPSTR)lp, read) != read) {
1953 hr = AVIERR_FILEREAD;
1954 break;
1955 }
1956 size -= read;
1957
1958 if (pos == (DWORD)-1)
1959 pos = offset - lp->dwChunkOffset + sizeof(DWORD);
1960
1961 AVIFILE_ParseIndex(This, lp, read / sizeof(AVIINDEXENTRY),
1962 pos, &bAbsolute);
1963 }
1964
1965 HeapFree(GetProcessHeap(), 0, lp);
1966
1967 /* checking ... */
1968 for (n = 0; n < This->fInfo.dwStreams; n++) {
1969 IAVIStreamImpl *pStream = This->ppStreams[n];
1970
1971 if (pStream->sInfo.dwSampleSize == 0 &&
1972 pStream->sInfo.dwLength != pStream->lLastFrame+1)
1973 ERR("stream %u length mismatch: dwLength=%u found=%d\n",
1974 n, pStream->sInfo.dwLength, pStream->lLastFrame);
1975 }
1976
1977 return hr;
1978 }
1979
1980 static HRESULT AVIFILE_ParseIndex(const IAVIFileImpl *This, AVIINDEXENTRY *lp,
1981 LONG count, DWORD pos, BOOL *bAbsolute)
1982 {
1983 if (lp == NULL)
1984 return AVIERR_BADPARAM;
1985
1986 for (; count > 0; count--, lp++) {
1987 WORD nStream = StreamFromFOURCC(lp->ckid);
1988
1989 if (lp->ckid == listtypeAVIRECORD || nStream == 0x7F)
1990 continue; /* skip these */
1991
1992 if (nStream > This->fInfo.dwStreams)
1993 return AVIERR_BADFORMAT;
1994
1995 if (*bAbsolute && lp->dwChunkOffset < This->dwMoviChunkPos)
1996 *bAbsolute = FALSE;
1997
1998 if (*bAbsolute)
1999 lp->dwChunkOffset += sizeof(DWORD);
2000 else
2001 lp->dwChunkOffset += pos;
2002
2003 if (FAILED(AVIFILE_AddFrame(This->ppStreams[nStream], lp->ckid, lp->dwChunkLength, lp->dwChunkOffset, lp->dwFlags)))
2004 return AVIERR_MEMORY;
2005 }
2006
2007 return AVIERR_OK;
2008 }
2009
2010 static HRESULT AVIFILE_ReadBlock(IAVIStreamImpl *This, DWORD pos,
2011 LPVOID buffer, DWORD size)
2012 {
2013 /* pre-conditions */
2014 assert(This != NULL);
2015 assert(This->paf != NULL);
2016 assert(This->paf->hmmio != NULL);
2017 assert(This->sInfo.dwStart <= pos && pos < This->sInfo.dwLength);
2018 assert(pos <= This->lLastFrame);
2019
2020 /* should we read as much as block gives us? */
2021 if (size == 0 || size > This->idxFrames[pos].dwChunkLength)
2022 size = This->idxFrames[pos].dwChunkLength;
2023
2024 /* read into out own buffer or given one? */
2025 if (buffer == NULL) {
2026 /* we also read the chunk */
2027 size += 2 * sizeof(DWORD);
2028
2029 /* check that buffer is big enough -- don't trust dwSuggestedBufferSize */
2030 if (This->lpBuffer == NULL || size < This->cbBuffer) {
2031 DWORD maxSize = max(size, This->sInfo.dwSuggestedBufferSize);
2032
2033 if (This->lpBuffer == NULL)
2034 This->lpBuffer = HeapAlloc(GetProcessHeap(), 0, maxSize);
2035 else
2036 This->lpBuffer = HeapReAlloc(GetProcessHeap(), 0, This->lpBuffer, maxSize);
2037 if (This->lpBuffer == NULL)
2038 return AVIERR_MEMORY;
2039 This->cbBuffer = max(size, This->sInfo.dwSuggestedBufferSize);
2040 }
2041
2042 /* now read the complete chunk into our buffer */
2043 if (mmioSeek(This->paf->hmmio, This->idxFrames[pos].dwChunkOffset, SEEK_SET) == -1)
2044 return AVIERR_FILEREAD;
2045 if (mmioRead(This->paf->hmmio, (HPSTR)This->lpBuffer, size) != size)
2046 return AVIERR_FILEREAD;
2047
2048 /* check if it was the correct block which we have read */
2049 if (This->lpBuffer[0] != This->idxFrames[pos].ckid ||
2050 This->lpBuffer[1] != This->idxFrames[pos].dwChunkLength) {
2051 ERR(": block %d not found at 0x%08X\n", pos, This->idxFrames[pos].dwChunkOffset);
2052 ERR(": Index says: '%4.4s'(0x%08X) size 0x%08X\n",
2053 (char*)&This->idxFrames[pos].ckid, This->idxFrames[pos].ckid,
2054 This->idxFrames[pos].dwChunkLength);
2055 ERR(": Data says: '%4.4s'(0x%08X) size 0x%08X\n",
2056 (char*)&This->lpBuffer[0], This->lpBuffer[0], This->lpBuffer[1]);
2057 return AVIERR_FILEREAD;
2058 }
2059 } else {
2060 if (mmioSeek(This->paf->hmmio, This->idxFrames[pos].dwChunkOffset + 2 * sizeof(DWORD), SEEK_SET) == -1)
2061 return AVIERR_FILEREAD;
2062 if (mmioRead(This->paf->hmmio, buffer, size) != size)
2063 return AVIERR_FILEREAD;
2064 }
2065
2066 return AVIERR_OK;
2067 }
2068
2069 static void AVIFILE_SamplesToBlock(const IAVIStreamImpl *This, LPLONG pos, LPLONG offset)
2070 {
2071 LONG block;
2072
2073 /* pre-conditions */
2074 assert(This != NULL);
2075 assert(pos != NULL);
2076 assert(offset != NULL);
2077 assert(This->sInfo.dwSampleSize != 0);
2078 assert(*pos >= This->sInfo.dwStart);
2079
2080 /* convert start sample to start bytes */
2081 (*offset) = (*pos) - This->sInfo.dwStart;
2082 (*offset) *= This->sInfo.dwSampleSize;
2083
2084 /* convert bytes to block number */
2085 for (block = 0; block <= This->lLastFrame; block++) {
2086 if (This->idxFrames[block].dwChunkLength <= *offset)
2087 (*offset) -= This->idxFrames[block].dwChunkLength;
2088 else
2089 break;
2090 }
2091
2092 *pos = block;
2093 }
2094
2095 static HRESULT AVIFILE_SaveFile(IAVIFileImpl *This)
2096 {
2097 MainAVIHeader MainAVIHdr;
2098 IAVIStreamImpl* pStream;
2099 MMCKINFO ckRIFF;
2100 MMCKINFO ckLIST1;
2101 MMCKINFO ckLIST2;
2102 MMCKINFO ck;
2103 DWORD nStream;
2104 DWORD dwPos;
2105 HRESULT hr;
2106
2107 /* initialize some things */
2108 if (This->dwMoviChunkPos == 0)
2109 AVIFILE_ComputeMoviStart(This);
2110
2111 /* written one record to much? */
2112 if (This->ckLastRecord.dwFlags & MMIO_DIRTY) {
2113 This->dwNextFramePos -= 3 * sizeof(DWORD);
2114 if (This->nIdxRecords > 0)
2115 This->nIdxRecords--;
2116 }
2117
2118 AVIFILE_UpdateInfo(This);
2119
2120 assert(This->fInfo.dwScale != 0);
2121
2122 memset(&MainAVIHdr, 0, sizeof(MainAVIHdr));
2123 MainAVIHdr.dwMicroSecPerFrame = MulDiv(This->fInfo.dwRate, 1000000,
2124 This->fInfo.dwScale);
2125 MainAVIHdr.dwMaxBytesPerSec = This->fInfo.dwMaxBytesPerSec;
2126 MainAVIHdr.dwPaddingGranularity = AVI_HEADERSIZE;
2127 MainAVIHdr.dwFlags = This->fInfo.dwFlags;
2128 MainAVIHdr.dwTotalFrames = This->fInfo.dwLength;
2129 MainAVIHdr.dwInitialFrames = 0;
2130 MainAVIHdr.dwStreams = This->fInfo.dwStreams;
2131 MainAVIHdr.dwSuggestedBufferSize = This->fInfo.dwSuggestedBufferSize;
2132 MainAVIHdr.dwWidth = This->fInfo.dwWidth;
2133 MainAVIHdr.dwHeight = This->fInfo.dwHeight;
2134 MainAVIHdr.dwInitialFrames = This->dwInitialFrames;
2135
2136 /* now begin writing ... */
2137 mmioSeek(This->hmmio, 0, SEEK_SET);
2138
2139 /* RIFF chunk */
2140 ckRIFF.cksize = 0;
2141 ckRIFF.fccType = formtypeAVI;
2142 if (mmioCreateChunk(This->hmmio, &ckRIFF, MMIO_CREATERIFF) != S_OK)
2143 return AVIERR_FILEWRITE;
2144
2145 /* AVI headerlist */
2146 ckLIST1.cksize = 0;
2147 ckLIST1.fccType = listtypeAVIHEADER;
2148 if (mmioCreateChunk(This->hmmio, &ckLIST1, MMIO_CREATELIST) != S_OK)
2149 return AVIERR_FILEWRITE;
2150
2151 /* MainAVIHeader */
2152 ck.ckid = ckidAVIMAINHDR;
2153 ck.cksize = sizeof(MainAVIHdr);
2154 ck.fccType = 0;
2155 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2156 return AVIERR_FILEWRITE;
2157 if (mmioWrite(This->hmmio, (HPSTR)&MainAVIHdr, ck.cksize) != ck.cksize)
2158 return AVIERR_FILEWRITE;
2159 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2160 return AVIERR_FILEWRITE;
2161
2162 /* write the headers of each stream into a separate streamheader list */
2163 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2164 AVIStreamHeader strHdr;
2165
2166 pStream = This->ppStreams[nStream];
2167
2168 /* begin the new streamheader list */
2169 ckLIST2.cksize = 0;
2170 ckLIST2.fccType = listtypeSTREAMHEADER;
2171 if (mmioCreateChunk(This->hmmio, &ckLIST2, MMIO_CREATELIST) != S_OK)
2172 return AVIERR_FILEWRITE;
2173
2174 /* create an AVIStreamHeader from the AVSTREAMINFO */
2175 strHdr.fccType = pStream->sInfo.fccType;
2176 strHdr.fccHandler = pStream->sInfo.fccHandler;
2177 strHdr.dwFlags = pStream->sInfo.dwFlags;
2178 strHdr.wPriority = pStream->sInfo.wPriority;
2179 strHdr.wLanguage = pStream->sInfo.wLanguage;
2180 strHdr.dwInitialFrames = pStream->sInfo.dwInitialFrames;
2181 strHdr.dwScale = pStream->sInfo.dwScale;
2182 strHdr.dwRate = pStream->sInfo.dwRate;
2183 strHdr.dwStart = pStream->sInfo.dwStart;
2184 strHdr.dwLength = pStream->sInfo.dwLength;
2185 strHdr.dwSuggestedBufferSize = pStream->sInfo.dwSuggestedBufferSize;
2186 strHdr.dwQuality = pStream->sInfo.dwQuality;
2187 strHdr.dwSampleSize = pStream->sInfo.dwSampleSize;
2188 strHdr.rcFrame.left = pStream->sInfo.rcFrame.left;
2189 strHdr.rcFrame.top = pStream->sInfo.rcFrame.top;
2190 strHdr.rcFrame.right = pStream->sInfo.rcFrame.right;
2191 strHdr.rcFrame.bottom = pStream->sInfo.rcFrame.bottom;
2192
2193 /* now write the AVIStreamHeader */
2194 ck.ckid = ckidSTREAMHEADER;
2195 ck.cksize = sizeof(strHdr);
2196 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2197 return AVIERR_FILEWRITE;
2198 if (mmioWrite(This->hmmio, (HPSTR)&strHdr, ck.cksize) != ck.cksize)
2199 return AVIERR_FILEWRITE;
2200 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2201 return AVIERR_FILEWRITE;
2202
2203 /* ... the hopefully ever present streamformat ... */
2204 ck.ckid = ckidSTREAMFORMAT;
2205 ck.cksize = pStream->cbFormat;
2206 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2207 return AVIERR_FILEWRITE;
2208 if (pStream->lpFormat != NULL && ck.cksize > 0) {
2209 if (mmioWrite(This->hmmio, pStream->lpFormat, ck.cksize) != ck.cksize)
2210 return AVIERR_FILEWRITE;
2211 }
2212 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2213 return AVIERR_FILEWRITE;
2214
2215 /* ... some optional existing handler data ... */
2216 if (pStream->lpHandlerData != NULL && pStream->cbHandlerData > 0) {
2217 ck.ckid = ckidSTREAMHANDLERDATA;
2218 ck.cksize = pStream->cbHandlerData;
2219 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2220 return AVIERR_FILEWRITE;
2221 if (mmioWrite(This->hmmio, pStream->lpHandlerData, ck.cksize) != ck.cksize)
2222 return AVIERR_FILEWRITE;
2223 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2224 return AVIERR_FILEWRITE;
2225 }
2226
2227 /* ... some optional additional extra chunk for this stream ... */
2228 if (pStream->extra.lp != NULL && pStream->extra.cb > 0) {
2229 /* the chunk header(s) are already in the structure */
2230 if (mmioWrite(This->hmmio, pStream->extra.lp, pStream->extra.cb) != pStream->extra.cb)
2231 return AVIERR_FILEWRITE;
2232 }
2233
2234 /* ... an optional name for this stream ... */
2235 if (lstrlenW(pStream->sInfo.szName) > 0) {
2236 LPSTR str;
2237
2238 ck.ckid = ckidSTREAMNAME;
2239 ck.cksize = lstrlenW(pStream->sInfo.szName) + 1;
2240 if (ck.cksize & 1) /* align */
2241 ck.cksize++;
2242 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2243 return AVIERR_FILEWRITE;
2244
2245 /* the streamname must be saved in ASCII not Unicode */
2246 str = HeapAlloc(GetProcessHeap(), 0, ck.cksize);
2247 if (str == NULL)
2248 return AVIERR_MEMORY;
2249 WideCharToMultiByte(CP_ACP, 0, pStream->sInfo.szName, -1, str,
2250 ck.cksize, NULL, NULL);
2251
2252 if (mmioWrite(This->hmmio, str, ck.cksize) != ck.cksize) {
2253 HeapFree(GetProcessHeap(), 0, str);
2254 return AVIERR_FILEWRITE;
2255 }
2256
2257 HeapFree(GetProcessHeap(), 0, str);
2258 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2259 return AVIERR_FILEWRITE;
2260 }
2261
2262 /* close streamheader list for this stream */
2263 if (mmioAscend(This->hmmio, &ckLIST2, 0) != S_OK)
2264 return AVIERR_FILEWRITE;
2265 } /* for (0 <= nStream < MainAVIHdr.dwStreams) */
2266
2267 /* close the aviheader list */
2268 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
2269 return AVIERR_FILEWRITE;
2270
2271 /* check for padding to pre-guessed 'movi'-chunk position */
2272 dwPos = ckLIST1.dwDataOffset + ckLIST1.cksize;
2273 if (This->dwMoviChunkPos - 2 * sizeof(DWORD) > dwPos) {
2274 ck.ckid = ckidAVIPADDING;
2275 ck.cksize = This->dwMoviChunkPos - dwPos - 4 * sizeof(DWORD);
2276 assert((LONG)ck.cksize >= 0);
2277
2278 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2279 return AVIERR_FILEWRITE;
2280 if (mmioSeek(This->hmmio, ck.cksize, SEEK_CUR) == -1)
2281 return AVIERR_FILEWRITE;
2282 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2283 return AVIERR_FILEWRITE;
2284 }
2285
2286 /* now write the 'movi' chunk */
2287 mmioSeek(This->hmmio, This->dwMoviChunkPos - 2 * sizeof(DWORD), SEEK_SET);
2288 ckLIST1.cksize = 0;
2289 ckLIST1.fccType = listtypeAVIMOVIE;
2290 if (mmioCreateChunk(This->hmmio, &ckLIST1, MMIO_CREATELIST) != S_OK)
2291 return AVIERR_FILEWRITE;
2292 if (mmioSeek(This->hmmio, This->dwNextFramePos, SEEK_SET) == -1)
2293 return AVIERR_FILEWRITE;
2294 if (mmioAscend(This->hmmio, &ckLIST1, 0) != S_OK)
2295 return AVIERR_FILEWRITE;
2296
2297 /* write 'idx1' chunk */
2298 hr = AVIFILE_SaveIndex(This);
2299 if (FAILED(hr))
2300 return hr;
2301
2302 /* write optional extra file chunks */
2303 if (This->fileextra.lp != NULL && This->fileextra.cb > 0) {
2304 /* as for the streams, are the chunk header(s) in the structure */
2305 if (mmioWrite(This->hmmio, This->fileextra.lp, This->fileextra.cb) != This->fileextra.cb)
2306 return AVIERR_FILEWRITE;
2307 }
2308
2309 /* close RIFF chunk */
2310 if (mmioAscend(This->hmmio, &ckRIFF, 0) != S_OK)
2311 return AVIERR_FILEWRITE;
2312
2313 /* add some JUNK at end for bad parsers */
2314 memset(&ckRIFF, 0, sizeof(ckRIFF));
2315 mmioWrite(This->hmmio, (HPSTR)&ckRIFF, sizeof(ckRIFF));
2316 mmioFlush(This->hmmio, 0);
2317
2318 return AVIERR_OK;
2319 }
2320
2321 static HRESULT AVIFILE_SaveIndex(const IAVIFileImpl *This)
2322 {
2323 IAVIStreamImpl *pStream;
2324 AVIINDEXENTRY idx;
2325 MMCKINFO ck;
2326 DWORD nStream;
2327 LONG n;
2328
2329 ck.ckid = ckidAVINEWINDEX;
2330 ck.cksize = 0;
2331 if (mmioCreateChunk(This->hmmio, &ck, 0) != S_OK)
2332 return AVIERR_FILEWRITE;
2333
2334 if (This->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) {
2335 /* is interleaved -- write block of corresponding frames */
2336 LONG lInitialFrames = 0;
2337 LONG stepsize;
2338 LONG i;
2339
2340 if (This->ppStreams[0]->sInfo.dwSampleSize == 0)
2341 stepsize = 1;
2342 else
2343 stepsize = AVIStreamTimeToSample((PAVISTREAM)This->ppStreams[0], 1000000);
2344
2345 assert(stepsize > 0);
2346
2347 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2348 if (lInitialFrames < This->ppStreams[nStream]->sInfo.dwInitialFrames)
2349 lInitialFrames = This->ppStreams[nStream]->sInfo.dwInitialFrames;
2350 }
2351
2352 for (i = -lInitialFrames; i < (LONG)This->fInfo.dwLength - lInitialFrames;
2353 i += stepsize) {
2354 DWORD nFrame = lInitialFrames + i;
2355
2356 assert(nFrame < This->nIdxRecords);
2357
2358 idx.ckid = listtypeAVIRECORD;
2359 idx.dwFlags = AVIIF_LIST;
2360 idx.dwChunkLength = This->idxRecords[nFrame].dwChunkLength;
2361 idx.dwChunkOffset = This->idxRecords[nFrame].dwChunkOffset
2362 - This->dwMoviChunkPos;
2363 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2364 return AVIERR_FILEWRITE;
2365
2366 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2367 pStream = This->ppStreams[nStream];
2368
2369 /* heave we reached start of this stream? */
2370 if (-(LONG)pStream->sInfo.dwInitialFrames > i)
2371 continue;
2372
2373 if (pStream->sInfo.dwInitialFrames < lInitialFrames)
2374 nFrame -= (lInitialFrames - pStream->sInfo.dwInitialFrames);
2375
2376 /* reached end of this stream? */
2377 if (pStream->lLastFrame <= nFrame)
2378 continue;
2379
2380 if ((pStream->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
2381 pStream->sInfo.dwFormatChangeCount != 0 &&
2382 pStream->idxFmtChanges != NULL) {
2383 DWORD pos;
2384
2385 for (pos = 0; pos < pStream->sInfo.dwFormatChangeCount; pos++) {
2386 if (pStream->idxFmtChanges[pos].ckid == nFrame) {
2387 idx.dwFlags = AVIIF_NOTIME;
2388 idx.ckid = MAKEAVICKID(cktypePALchange, pStream->nStream);
2389 idx.dwChunkLength = pStream->idxFmtChanges[pos].dwChunkLength;
2390 idx.dwChunkOffset = pStream->idxFmtChanges[pos].dwChunkOffset
2391 - This->dwMoviChunkPos;
2392
2393 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2394 return AVIERR_FILEWRITE;
2395 break;
2396 }
2397 }
2398 } /* if have formatchanges */
2399
2400 idx.ckid = pStream->idxFrames[nFrame].ckid;
2401 idx.dwFlags = pStream->idxFrames[nFrame].dwFlags;
2402 idx.dwChunkLength = pStream->idxFrames[nFrame].dwChunkLength;
2403 idx.dwChunkOffset = pStream->idxFrames[nFrame].dwChunkOffset
2404 - This->dwMoviChunkPos;
2405 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2406 return AVIERR_FILEWRITE;
2407 }
2408 }
2409 } else {
2410 /* not interleaved -- write index for each stream at once */
2411 for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
2412 pStream = This->ppStreams[nStream];
2413
2414 for (n = 0; n <= pStream->lLastFrame; n++) {
2415 if ((pStream->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
2416 (pStream->sInfo.dwFormatChangeCount != 0)) {
2417 DWORD pos;
2418
2419 for (pos = 0; pos < pStream->sInfo.dwFormatChangeCount; pos++) {
2420 if (pStream->idxFmtChanges[pos].ckid == n) {
2421 idx.dwFlags = AVIIF_NOTIME;
2422 idx.ckid = MAKEAVICKID(cktypePALchange, pStream->nStream);
2423 idx.dwChunkLength = pStream->idxFmtChanges[pos].dwChunkLength;
2424 idx.dwChunkOffset =
2425 pStream->idxFmtChanges[pos].dwChunkOffset - This->dwMoviChunkPos;
2426 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2427 return AVIERR_FILEWRITE;
2428 break;
2429 }
2430 }
2431 } /* if have formatchanges */
2432
2433 idx.ckid = pStream->idxFrames[n].ckid;
2434 idx.dwFlags = pStream->idxFrames[n].dwFlags;
2435 idx.dwChunkLength = pStream->idxFrames[n].dwChunkLength;
2436 idx.dwChunkOffset = pStream->idxFrames[n].dwChunkOffset
2437 - This->dwMoviChunkPos;
2438
2439 if (mmioWrite(This->hmmio, (HPSTR)&idx, sizeof(idx)) != sizeof(idx))
2440 return AVIERR_FILEWRITE;
2441 }
2442 }
2443 } /* if not interleaved */
2444
2445 if (mmioAscend(This->hmmio, &ck, 0) != S_OK)
2446 return AVIERR_FILEWRITE;
2447
2448 return AVIERR_OK;
2449 }
2450
2451 static ULONG AVIFILE_SearchStream(const IAVIFileImpl *This, DWORD fcc, LONG lSkip)
2452 {
2453 UINT i;
2454 UINT nStream;
2455
2456 /* pre-condition */
2457 assert(lSkip >= 0);
2458
2459 if (fcc != 0) {
2460 /* search the number of the specified stream */
2461 nStream = (ULONG)-1;
2462 for (i = 0; i < This->fInfo.dwStreams; i++) {
2463 assert(This->ppStreams[i] != NULL);
2464
2465 if (This->ppStreams[i]->sInfo.fccType == fcc) {
2466 if (lSkip == 0) {
2467 nStream = i;
2468 break;
2469 } else
2470 lSkip--;
2471 }
2472 }
2473 } else
2474 nStream = lSkip;
2475
2476 return nStream;
2477 }
2478
2479 static void AVIFILE_UpdateInfo(IAVIFileImpl *This)
2480 {
2481 UINT i;
2482
2483 /* pre-conditions */
2484 assert(This != NULL);
2485
2486 This->fInfo.dwMaxBytesPerSec = 0;
2487 This->fInfo.dwCaps = AVIFILECAPS_CANREAD|AVIFILECAPS_CANWRITE;
2488 This->fInfo.dwSuggestedBufferSize = 0;
2489 This->fInfo.dwWidth = 0;
2490 This->fInfo.dwHeight = 0;
2491 This->fInfo.dwScale = 0;
2492 This->fInfo.dwRate = 0;
2493 This->fInfo.dwLength = 0;
2494 This->dwInitialFrames = 0;
2495
2496 for (i = 0; i < This->fInfo.dwStreams; i++) {
2497 AVISTREAMINFOW *psi;
2498 DWORD n;
2499
2500 /* pre-conditions */
2501 assert(This->ppStreams[i] != NULL);
2502
2503 psi = &This->ppStreams[i]->sInfo;
2504 assert(psi->dwScale != 0);
2505 assert(psi->dwRate != 0);
2506
2507 if (i == 0) {
2508 /* use first stream timings as base */
2509 This->fInfo.dwScale = psi->dwScale;
2510 This->fInfo.dwRate = psi->dwRate;
2511 This->fInfo.dwLength = psi->dwLength;
2512 } else {
2513 n = AVIStreamSampleToSample((PAVISTREAM)This->ppStreams[0],
2514 (PAVISTREAM)This->ppStreams[i],psi->dwLength);
2515 if (This->fInfo.dwLength < n)
2516 This->fInfo.dwLength = n;
2517 }
2518
2519 if (This->dwInitialFrames < psi->dwInitialFrames)
2520 This->dwInitialFrames = psi->dwInitialFrames;
2521
2522 if (This->fInfo.dwSuggestedBufferSize < psi->dwSuggestedBufferSize)
2523 This->fInfo.dwSuggestedBufferSize = psi->dwSuggestedBufferSize;
2524
2525 if (psi->dwSampleSize != 0) {
2526 /* fixed sample size -- exact computation */
2527 This->fInfo.dwMaxBytesPerSec += MulDiv(psi->dwSampleSize, psi->dwRate,
2528 psi->dwScale);
2529 } else {
2530 /* variable sample size -- only upper limit */
2531 This->fInfo.dwMaxBytesPerSec += MulDiv(psi->dwSuggestedBufferSize,
2532 psi->dwRate, psi->dwScale);
2533
2534 /* update dimensions */
2535 n = psi->rcFrame.right - psi->rcFrame.left;
2536 if (This->fInfo.dwWidth < n)
2537 This->fInfo.dwWidth = n;
2538 n = psi->rcFrame.bottom - psi->rcFrame.top;
2539 if (This->fInfo.dwHeight < n)
2540 This->fInfo.dwHeight = n;
2541 }
2542 }
2543 }
2544
2545 static HRESULT AVIFILE_WriteBlock(IAVIStreamImpl *This, DWORD block,
2546 FOURCC ckid, DWORD flags, LPCVOID buffer,
2547 LONG size)
2548 {
2549 MMCKINFO ck;
2550
2551 ck.ckid = ckid;
2552 ck.cksize = size;
2553 ck.fccType = 0;
2554
2555 /* if no frame/block is already written, we must compute start of movi chunk */
2556 if (This->paf->dwMoviChunkPos == 0)
2557 AVIFILE_ComputeMoviStart(This->paf);
2558
2559 if (mmioSeek(This->paf->hmmio, This->paf->dwNextFramePos, SEEK_SET) == -1)
2560 return AVIERR_FILEWRITE;
2561
2562 if (mmioCreateChunk(This->paf->hmmio, &ck, 0) != S_OK)
2563 return AVIERR_FILEWRITE;
2564 if (buffer != NULL && size > 0) {
2565 if (mmioWrite(This->paf->hmmio, buffer, size) != size)
2566 return AVIERR_FILEWRITE;
2567 }
2568 if (mmioAscend(This->paf->hmmio, &ck, 0) != S_OK)
2569 return AVIERR_FILEWRITE;
2570
2571 This->paf->fDirty = TRUE;
2572 This->paf->dwNextFramePos = mmioSeek(This->paf->hmmio, 0, SEEK_CUR);
2573
2574 return AVIFILE_AddFrame(This, ckid, size,
2575 ck.dwDataOffset - 2 * sizeof(DWORD), flags);
2576 }
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