dlls/avifil32/editstream.c

   1 /*
   2  * Copyright 2003 Michael Günnewig
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  17  */
  18
  19 #define COM_NO_WINDOWS_H
  20 #include <assert.h>
  21 #include <stdarg.h>
  22
  23 #include "windef.h"
  24 #include "winbase.h"
  25 #include "winuser.h"
  26 #include "wingdi.h"
  27 #include "winnls.h"
  28 #include "winerror.h"
  29 #include "windowsx.h"
  30 #include "mmsystem.h"
  31 #include "vfw.h"
  32
  33 #include "avifile_private.h"
  34 #include "extrachunk.h"
  35
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
  39
  40 /***********************************************************************/
  41
  42 /* internal interface to get access to table of stream in an editable stream */
  43 typedef struct IEditStreamInternal IEditStreamInternal;
  44
  45 typedef struct _EditStreamTable {
  46   PAVISTREAM pStream;  /* stream which contains the data */
  47   DWORD      dwStart;  /* where starts the part which is also our */
  48   DWORD      dwLength; /* how many is also in this stream */
  49 } EditStreamTable;
  50
  51 #define INTERFACE IEditStreamInternal
  52 #define IEditStreamInternal_METHODS \
  53     IUnknown_METHODS \
  54     STDMETHOD(GetEditStreamImpl)(THIS_ LPVOID*) PURE;
  55 DECLARE_INTERFACE_(IEditStreamInternal, IUnknown) { IEditStreamInternal_METHODS };
  56 #undef INTERFACE
  57
  58 #define EditStreamEnd(This,streamNr) ((This)->pStreams[streamNr].dwStart + \
  59                                       (This)->pStreams[streamNr].dwLength)
  60
  61 /***********************************************************************/
  62
  63 static HRESULT WINAPI IAVIEditStream_fnQueryInterface(IAVIEditStream*iface,REFIID refiid,LPVOID *obj);
  64 static ULONG   WINAPI IAVIEditStream_fnAddRef(IAVIEditStream*iface);
  65 static ULONG   WINAPI IAVIEditStream_fnRelease(IAVIEditStream*iface);
  66 static HRESULT WINAPI IAVIEditStream_fnCut(IAVIEditStream*iface,LONG*plStart,
  67                                            LONG*plLength,PAVISTREAM*ppResult);
  68 static HRESULT WINAPI IAVIEditStream_fnCopy(IAVIEditStream*iface,LONG*plStart,
  69                                             LONG*plLength,PAVISTREAM*ppResult);
  70 static HRESULT WINAPI IAVIEditStream_fnPaste(IAVIEditStream*iface,LONG*plStart,
  71                                              LONG*plLength,PAVISTREAM pSource,
  72                                              LONG lStart,LONG lEnd);
  73 static HRESULT WINAPI IAVIEditStream_fnClone(IAVIEditStream*iface,
  74                                              PAVISTREAM*ppResult);
  75 static HRESULT WINAPI IAVIEditStream_fnSetInfo(IAVIEditStream*iface,
  76                                                LPAVISTREAMINFOW asi,LONG size);
  77
  78 struct IAVIEditStreamVtbl ieditstream = {
  79   IAVIEditStream_fnQueryInterface,
  80   IAVIEditStream_fnAddRef,
  81   IAVIEditStream_fnRelease,
  82   IAVIEditStream_fnCut,
  83   IAVIEditStream_fnCopy,
  84   IAVIEditStream_fnPaste,
  85   IAVIEditStream_fnClone,
  86   IAVIEditStream_fnSetInfo
  87 };
  88
  89 static HRESULT WINAPI IEditAVIStream_fnQueryInterface(IAVIStream*iface,REFIID refiid,LPVOID*obj);
  90 static ULONG   WINAPI IEditAVIStream_fnAddRef(IAVIStream*iface);
  91 static ULONG   WINAPI IEditAVIStream_fnRelease(IAVIStream*iface);
  92 static HRESULT WINAPI IEditAVIStream_fnCreate(IAVIStream*iface,LPARAM lParam1,LPARAM lParam2);
  93 static HRESULT WINAPI IEditAVIStream_fnInfo(IAVIStream*iface,AVISTREAMINFOW *psi,LONG size);
  94 static LONG    WINAPI IEditAVIStream_fnFindSample(IAVIStream*iface,LONG pos,
  95                                                   LONG flags);
  96 static HRESULT WINAPI IEditAVIStream_fnReadFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG*formatsize);
  97 static HRESULT WINAPI IEditAVIStream_fnSetFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG formatsize);
  98 static HRESULT WINAPI IEditAVIStream_fnRead(IAVIStream*iface,LONG start,
  99                                             LONG samples,LPVOID buffer,
 100                                             LONG buffersize,LONG*bytesread,
 101                                             LONG*samplesread);
 102 static HRESULT WINAPI IEditAVIStream_fnWrite(IAVIStream*iface,LONG start,
 103                                              LONG samples,LPVOID buffer,
 104                                              LONG buffersize,DWORD flags,
 105                                              LONG*sampwritten,LONG*byteswritten);
 106 static HRESULT WINAPI IEditAVIStream_fnDelete(IAVIStream*iface,LONG start,LONG samples);
 107 static HRESULT WINAPI IEditAVIStream_fnReadData(IAVIStream*iface,DWORD fcc,
 108                                                 LPVOID lp,LONG *lpread);
 109 static HRESULT WINAPI IEditAVIStream_fnWriteData(IAVIStream*iface,DWORD fcc,
 110                                                  LPVOID lp,LONG size);
 111 static HRESULT WINAPI IEditAVIStream_fnSetInfo(IAVIStream*iface,AVISTREAMINFOW*info,LONG infolen);
 112
 113 struct IAVIStreamVtbl ieditstast = {
 114   IEditAVIStream_fnQueryInterface,
 115   IEditAVIStream_fnAddRef,
 116   IEditAVIStream_fnRelease,
 117   IEditAVIStream_fnCreate,
 118   IEditAVIStream_fnInfo,
 119   IEditAVIStream_fnFindSample,
 120   IEditAVIStream_fnReadFormat,
 121   IEditAVIStream_fnSetFormat,
 122   IEditAVIStream_fnRead,
 123   IEditAVIStream_fnWrite,
 124   IEditAVIStream_fnDelete,
 125   IEditAVIStream_fnReadData,
 126   IEditAVIStream_fnWriteData,
 127   IEditAVIStream_fnSetInfo
 128 };
 129
 130 static HRESULT WINAPI IEditStreamInternal_fnQueryInterface(IEditStreamInternal*iface,REFIID refiid,LPVOID*obj);
 131 static ULONG   WINAPI IEditStreamInternal_fnAddRef(IEditStreamInternal*iface);
 132 static ULONG   WINAPI IEditStreamInternal_fnRelease(IEditStreamInternal*iface);
 133 static HRESULT WINAPI IEditStreamInternal_fnGetEditStreamImpl(IEditStreamInternal*iface,LPVOID*ppimpl);
 134
 135 struct IEditStreamInternalVtbl ieditstreaminternal = {
 136   IEditStreamInternal_fnQueryInterface,
 137   IEditStreamInternal_fnAddRef,
 138   IEditStreamInternal_fnRelease,
 139   IEditStreamInternal_fnGetEditStreamImpl
 140 };
 141
 142 typedef struct _IAVIEditStreamImpl IAVIEditStreamImpl;
 143
 144 typedef struct _IEditAVIStreamImpl {
 145   /* IUnknown stuff */
 146   IAVIStreamVtbl *lpVtbl;
 147
 148   /* IAVIStream stuff */
 149   IAVIEditStreamImpl *pae;
 150 } IEditAVIStreamImpl;
 151
 152 typedef struct _IEditStreamInternalImpl {
 153   /* IUnknown stuff */
 154   IEditStreamInternalVtbl *lpVtbl;
 155
 156   /* IEditStreamInternal stuff */
 157   IAVIEditStreamImpl *pae;
 158 } IEditStreamInternalImpl;
 159
 160 struct _IAVIEditStreamImpl {
 161   /* IUnknown stuff */
 162   IAVIEditStreamVtbl *lpVtbl;
 163   DWORD  ref;
 164
 165   /* IAVIEditStream stuff */
 166   IEditAVIStreamImpl      iAVIStream;
 167   IEditStreamInternalImpl iEditStreamInternal;
 168
 169   AVISTREAMINFOW       sInfo;
 170
 171   EditStreamTable     *pStreams;
 172   DWORD                nStreams;   /* current fill level of pStreams table */
 173   DWORD                nTableSize; /* size of pStreams table */
 174
 175   BOOL                 bDecompress;
 176   PAVISTREAM           pCurStream;
 177   PGETFRAME            pg;         /* IGetFrame for pCurStream */
 178   LPBITMAPINFOHEADER   lpFrame;    /* frame of pCurStream */
 179 };
 180
 181 /***********************************************************************/
 182
 183 PAVIEDITSTREAM AVIFILE_CreateEditStream(PAVISTREAM pstream)
 184 {
 185   IAVIEditStreamImpl *pedit = NULL;
 186
 187   pedit = (IAVIEditStreamImpl*)LocalAlloc(LPTR,sizeof(IAVIEditStreamImpl));
 188   if (pedit == NULL)
 189     return NULL;
 190
 191   pedit->lpVtbl            = &ieditstream;
 192   pedit->iAVIStream.lpVtbl = &ieditstast;
 193   pedit->iAVIStream.pae    = pedit;
 194   pedit->iEditStreamInternal.lpVtbl = &ieditstreaminternal;
 195   pedit->iEditStreamInternal.pae    = pedit;
 196   pedit->ref = 1;
 197
 198   IAVIStream_Create((PAVISTREAM)&pedit->iAVIStream,(LPARAM)pstream,0);
 199
 200   return (PAVIEDITSTREAM)pedit;
 201 }
 202
 203 static HRESULT AVIFILE_FindStreamInTable(IAVIEditStreamImpl* const This,
 204                                          DWORD pos,PAVISTREAM *ppStream,
 205                                          DWORD* streamPos,
 206                                          DWORD* streamNr,BOOL bFindSample)
 207 {
 208   DWORD n;
 209
 210   TRACE("(%p,%lu,%p,%p,%p,%d)\n",This,pos,ppStream,streamPos,
 211         streamNr,bFindSample);
 212
 213   if (pos < This->sInfo.dwStart)
 214     return AVIERR_BADPARAM;
 215
 216   pos -= This->sInfo.dwStart;
 217   for (n = 0; n < This->nStreams; n++) {
 218     if (pos < This->pStreams[n].dwLength) {
 219       *ppStream  = This->pStreams[n].pStream;
 220       *streamPos = This->pStreams[n].dwStart + pos;
 221       if (streamNr != NULL)
 222         *streamNr = n;
 223
 224       return AVIERR_OK;
 225     }
 226     pos -= This->pStreams[n].dwLength;
 227   }
 228   if (pos == 0 && bFindSample) {
 229     *ppStream  = This->pStreams[--n].pStream;
 230     *streamPos = EditStreamEnd(This, n);
 231     if (streamNr != NULL)
 232       *streamNr = n;
 233
 234     TRACE(" -- pos=0 && b=1 -> (%p,%lu,%lu)\n",*ppStream, *streamPos, n);
 235     return AVIERR_OK;
 236   } else {
 237     *ppStream = NULL;
 238     *streamPos = 0;
 239     if (streamNr != NULL)
 240       *streamNr = 0;
 241
 242     TRACE(" -> ERROR (NULL,0,0)\n");
 243     return AVIERR_BADPARAM;
 244   }
 245 }
 246
 247 static LPVOID AVIFILE_ReadFrame(IAVIEditStreamImpl* const This,
 248                                 PAVISTREAM pstream, LONG pos)
 249 {
 250   PGETFRAME pg;
 251
 252   TRACE("(%p,%p,%ld)\n",This,pstream,pos);
 253
 254   if (pstream == NULL)
 255     return NULL;
 256
 257   /* if stream changes make sure that only palette changes */
 258   if (This->pCurStream != pstream) {
 259     pg = AVIStreamGetFrameOpen(pstream, NULL);
 260     if (pg == NULL)
 261       return NULL;
 262     if (This->pg != NULL) {
 263       if (IGetFrame_SetFormat(pg, This->lpFrame, NULL, 0, 0, -1, -1)) {
 264         AVIStreamGetFrameClose(pg);
 265         ERR(": IGetFrame_SetFormat failed\n");
 266         return NULL;
 267       }
 268       AVIStreamGetFrameClose(This->pg);
 269     }
 270     This->pg         = pg;
 271     This->pCurStream = pstream;
 272   }
 273
 274   /* now get the decompressed frame */
 275   This->lpFrame = AVIStreamGetFrame(This->pg, pos);
 276   if (This->lpFrame != NULL)
 277     This->sInfo.dwSuggestedBufferSize = This->lpFrame->biSizeImage;
 278
 279   return This->lpFrame;
 280 }
 281
 282 static HRESULT AVIFILE_RemoveStream(IAVIEditStreamImpl* const This, DWORD nr)
 283 {
 284   assert(This != NULL);
 285   assert(nr < This->nStreams);
 286
 287   /* remove part nr */
 288   IAVIStream_Release(This->pStreams[nr].pStream);
 289   This->nStreams--;
 290   if (This->nStreams - nr > 0) {
 291     memmove(This->pStreams + nr, This->pStreams + nr + 1,
 292             (This->nStreams - nr) * sizeof(EditStreamTable));
 293   }
 294   This->pStreams[This->nStreams].pStream  = NULL;
 295   This->pStreams[This->nStreams].dwStart  = 0;
 296   This->pStreams[This->nStreams].dwLength = 0;
 297
 298   /* try to merge the part before the deleted one and the one after it */
 299   if (0 < nr && 0 < This->nStreams &&
 300       This->pStreams[nr - 1].pStream == This->pStreams[nr].pStream) {
 301     if (EditStreamEnd(This, nr - 1) == This->pStreams[nr].dwStart) {
 302       This->pStreams[nr - 1].dwLength += This->pStreams[nr].dwLength;
 303       return AVIFILE_RemoveStream(This, nr);
 304     }
 305   }
 306
 307   return AVIERR_OK;
 308 }
 309
 310 static BOOL AVIFILE_FormatsEqual(PAVISTREAM avi1, PAVISTREAM avi2)
 311 {
 312   LPVOID fmt1 = NULL, fmt2 = NULL;
 313   LONG size1, size2, start1, start2;
 314   BOOL status = FALSE;
 315
 316   assert(avi1 != NULL && avi2 != NULL);
 317
 318   /* get stream starts and check format sizes */
 319   start1 = AVIStreamStart(avi1);
 320   start2 = AVIStreamStart(avi2);
 321   if (FAILED(AVIStreamFormatSize(avi1, start1, &size1)))
 322     return FALSE;
 323   if (FAILED(AVIStreamFormatSize(avi2, start2, &size2)))
 324     return FALSE;
 325   if (size1 != size2)
 326     return FALSE;
 327
 328   /* sizes match, now get formats and compare them */
 329   fmt1 = GlobalAllocPtr(GHND, size1);
 330   if (fmt1 == NULL)
 331     return FALSE;
 332   if (SUCCEEDED(AVIStreamReadFormat(avi1, start1, fmt1, &size1))) {
 333     fmt2 = GlobalAllocPtr(GHND, size1);
 334     if (fmt2 != NULL) {
 335       if (SUCCEEDED(AVIStreamReadFormat(avi2, start2, fmt2, &size1)))
 336         status = (memcmp(fmt1, fmt2, size1) == 0);
 337     }
 338   }
 339
 340   if (fmt2 != NULL)
 341     GlobalFreePtr(fmt2);
 342   GlobalFreePtr(fmt1);
 343
 344   return status;
 345 }
 346
 347 /***********************************************************************/
 348
 349 static HRESULT WINAPI IAVIEditStream_fnQueryInterface(IAVIEditStream*iface,REFIID refiid,LPVOID *obj)
 350 {
 351   ICOM_THIS(IAVIEditStreamImpl,iface);
 352
 353   TRACE("(%p,%s,%p)\n", This, debugstr_guid(refiid), obj);
 354
 355   if (IsEqualGUID(&IID_IUnknown, refiid) ||
 356       IsEqualGUID(&IID_IAVIEditStream, refiid)) {
 357     *obj = iface;
 358     IAVIEditStream_AddRef(iface);
 359
 360     return S_OK;
 361   } else if (IsEqualGUID(&IID_IAVIStream, refiid)) {
 362     *obj = &This->iAVIStream;
 363     IAVIEditStream_AddRef(iface);
 364
 365     return S_OK;
 366   } else if (IsEqualGUID(&IID_IEditStreamInternal, refiid)) {
 367     *obj = &This->iEditStreamInternal;
 368     IAVIEditStream_AddRef(iface);
 369
 370     return S_OK;
 371   }
 372
 373   return OLE_E_ENUM_NOMORE;
 374 }
 375
 376 static ULONG   WINAPI IAVIEditStream_fnAddRef(IAVIEditStream*iface)
 377 {
 378   ICOM_THIS(IAVIEditStreamImpl,iface);
 379
 380   TRACE("(%p) -> %ld\n", iface, This->ref + 1);
 381   return ++(This->ref);
 382 }
 383
 384 static ULONG   WINAPI IAVIEditStream_fnRelease(IAVIEditStream*iface)
 385 {
 386   ICOM_THIS(IAVIEditStreamImpl,iface);
 387   DWORD i;
 388
 389   TRACE("(%p) -> %ld\n", iface, This->ref - 1);
 390
 391   if (!--(This->ref)) {
 392     /* releaase memory */
 393     if (This->pg != NULL)
 394       AVIStreamGetFrameClose(This->pg);
 395     if (This->pStreams != NULL) {
 396       for (i = 0; i < This->nStreams; i++) {
 397         if (This->pStreams[i].pStream != NULL)
 398           IAVIStream_Release(This->pStreams[i].pStream);
 399       }
 400       GlobalFreePtr(This->pStreams);
 401     }
 402
 403     LocalFree((HLOCAL)This);
 404     return 0;
 405   }
 406   return This->ref;
 407 }
 408
 409 static HRESULT WINAPI IAVIEditStream_fnCut(IAVIEditStream*iface,LONG*plStart,
 410                                            LONG*plLength,PAVISTREAM*ppResult)
 411 {
 412   ICOM_THIS(IAVIEditStreamImpl,iface);
 413   PAVISTREAM stream;
 414   DWORD      start, len, streamPos, streamNr;
 415   HRESULT    hr;
 416
 417   TRACE("(%p,%p,%p,%p)\n",iface,plStart,plLength,ppResult);
 418
 419   if (ppResult != NULL)
 420     *ppResult = NULL;
 421   if (plStart == NULL || plLength == NULL || *plStart < 0)
 422     return AVIERR_BADPARAM;
 423
 424   /* if asked for cutted part copy it before deleting */
 425   if (ppResult != NULL) {
 426     hr = IAVIEditStream_Copy(iface, plStart, plLength, ppResult);
 427     if (FAILED(hr))
 428       return hr;
 429   }
 430
 431   start = *plStart;
 432   len   = *plLength;
 433
 434   /* now delete the requested part */
 435   while (len > 0) {
 436     hr = AVIFILE_FindStreamInTable(This, start, &stream,
 437                                    &streamPos, &streamNr, FALSE);
 438     if (FAILED(hr))
 439       return hr;
 440     if (This->pStreams[streamNr].dwStart == streamPos) {
 441       /* deleting from start of part */
 442       if (len < This->pStreams[streamNr].dwLength) {
 443         start += len;
 444         This->pStreams[streamNr].dwStart  += len;
 445         This->pStreams[streamNr].dwLength -= len;
 446         This->sInfo.dwLength -= len;
 447         len = 0;
 448
 449         /* we must return decompressed data now */
 450         This->bDecompress = TRUE;
 451       } else {
 452         /* deleting hole part */
 453         len -= This->pStreams[streamNr].dwLength;
 454         AVIFILE_RemoveStream(This,streamNr);
 455       }
 456     } else if (EditStreamEnd(This, streamNr) <= streamPos + len) {
 457       /* deleting at end of a part */
 458       DWORD count = EditStreamEnd(This, streamNr) - streamPos;
 459       This->sInfo.dwLength -= count;
 460       len                  -= count;
 461       This->pStreams[streamNr].dwLength =
 462         streamPos - This->pStreams[streamNr].dwStart;
 463     } else {
 464       /* splitting */
 465       if (This->nStreams + 1 >= This->nTableSize) {
 466         This->pStreams =
 467           GlobalReAllocPtr(This->pStreams, (This->nTableSize + 32) * sizeof(EditStreamTable), GMEM_SHARE|GHND);
 468         if (This->pStreams == NULL)
 469           return AVIERR_MEMORY;
 470         This->nTableSize += 32;
 471       }
 472       memmove(This->pStreams + streamNr + 1, This->pStreams + streamNr,
 473               (This->nStreams - streamNr) * sizeof(EditStreamTable));
 474       This->nStreams++;
 475
 476       IAVIStream_AddRef(This->pStreams[streamNr + 1].pStream);
 477       This->pStreams[streamNr + 1].dwStart  = streamPos + len;
 478       This->pStreams[streamNr + 1].dwLength =
 479         EditStreamEnd(This, streamNr) - This->pStreams[streamNr + 1].dwStart;
 480
 481       This->pStreams[streamNr].dwLength =
 482         streamPos - This->pStreams[streamNr].dwStart;
 483       This->sInfo.dwLength -= len;
 484       len = 0;
 485     }
 486   }
 487
 488   This->sInfo.dwEditCount++;
 489
 490   return AVIERR_OK;
 491 }
 492
 493 static HRESULT WINAPI IAVIEditStream_fnCopy(IAVIEditStream*iface,LONG*plStart,
 494                                             LONG*plLength,PAVISTREAM*ppResult)
 495 {
 496   ICOM_THIS(IAVIEditStreamImpl,iface);
 497   IAVIEditStreamImpl* pEdit;
 498   HRESULT hr;
 499   LONG start = 0;
 500
 501   TRACE("(%p,%p,%p,%p)\n",iface,plStart,plLength,ppResult);
 502
 503   if (ppResult == NULL)
 504     return AVIERR_BADPARAM;
 505   *ppResult = NULL;
 506   if (plStart == NULL || plLength == NULL || *plStart < 0 || *plLength < 0)
 507     return AVIERR_BADPARAM;
 508
 509   /* check bounds */
 510   if (*(LPDWORD)plLength > This->sInfo.dwLength)
 511     *(LPDWORD)plLength = This->sInfo.dwLength;
 512   if (*(LPDWORD)plStart < This->sInfo.dwStart) {
 513     *(LPDWORD)plLength -= This->sInfo.dwStart - *(LPDWORD)plStart;
 514     *(LPDWORD)plStart   = This->sInfo.dwStart;
 515     if (*plLength < 0)
 516       return AVIERR_BADPARAM;
 517   }
 518   if (*(LPDWORD)plStart + *(LPDWORD)plLength > This->sInfo.dwStart + This->sInfo.dwLength)
 519     *(LPDWORD)plLength = This->sInfo.dwStart + This->sInfo.dwLength -
 520       *(LPDWORD)plStart;
 521
 522   pEdit = (IAVIEditStreamImpl*)AVIFILE_CreateEditStream(NULL);
 523   if (pEdit == NULL)
 524     return AVIERR_MEMORY;
 525
 526   hr = IAVIEditStream_Paste((PAVIEDITSTREAM)pEdit,&start,plLength,
 527                             (PAVISTREAM)&This->iAVIStream,*plStart,
 528                             *plStart + *plLength);
 529   *plStart = start;
 530   if (FAILED(hr))
 531     IAVIEditStream_Release((PAVIEDITSTREAM)pEdit);
 532   else
 533     *ppResult = (PAVISTREAM)&pEdit->iAVIStream;
 534
 535   return hr;
 536 }
 537
 538 static HRESULT WINAPI IAVIEditStream_fnPaste(IAVIEditStream*iface,LONG*plStart,
 539                                              LONG*plLength,PAVISTREAM pSource,
 540                                              LONG lStart,LONG lLength)
 541 {
 542   ICOM_THIS(IAVIEditStreamImpl,iface);
 543   AVISTREAMINFOW      srcInfo;
 544   IEditStreamInternal*pInternal = NULL;
 545   IAVIEditStreamImpl *pEdit = NULL;
 546   PAVISTREAM          pStream;
 547   DWORD               startPos, endPos, streamNr, n, nStreams;
 548
 549   TRACE("(%p,%p,%p,%p,%ld,%ld)\n",iface,plStart,plLength,
 550         pSource,lStart,lLength);
 551
 552   if (pSource == NULL)
 553     return AVIERR_BADHANDLE;
 554   if (plStart == NULL || *plStart < 0)
 555     return AVIERR_BADPARAM;
 556   if (This->sInfo.dwStart + This->sInfo.dwLength < *plStart)
 557     return AVIERR_BADPARAM; /* Can't paste with holes */
 558   if (FAILED(IAVIStream_Info(pSource, &srcInfo, sizeof(srcInfo))))
 559     return AVIERR_ERROR;
 560   if (lStart < srcInfo.dwStart || lStart >= srcInfo.dwStart + srcInfo.dwLength)
 561     return AVIERR_BADPARAM;
 562   if (This->sInfo.fccType == 0) {
 563     /* This stream is empty */
 564     IAVIStream_Info(pSource, &This->sInfo, sizeof(This->sInfo));
 565     This->sInfo.dwStart  = *plStart;
 566     This->sInfo.dwLength = 0;
 567   }
 568   if (This->sInfo.fccType != srcInfo.fccType)
 569     return AVIERR_UNSUPPORTED; /* different stream types */
 570   if (lLength == -1) /* Copy the hole stream */
 571     lLength = srcInfo.dwLength;
 572   if (lStart + lLength > srcInfo.dwStart + srcInfo.dwLength)
 573     lLength = srcInfo.dwStart + srcInfo.dwLength - lStart;
 574   if (lLength + *plStart >= 0x80000000)
 575     return AVIERR_MEMORY;
 576
 577   /* streamtype specific tests */
 578   if (srcInfo.fccType == streamtypeVIDEO) {
 579     DWORD size;
 580
 581     size = srcInfo.rcFrame.right - srcInfo.rcFrame.left;
 582     if (size != This->sInfo.rcFrame.right - This->sInfo.rcFrame.left)
 583       return AVIERR_UNSUPPORTED; /* FIXME: Can't GetFrame convert it? */
 584     size = srcInfo.rcFrame.bottom - srcInfo.rcFrame.top;
 585     if (size != This->sInfo.rcFrame.bottom - This->sInfo.rcFrame.top)
 586       return AVIERR_UNSUPPORTED; /* FIXME: Can't GetFrame convert it? */
 587   } else if (srcInfo.fccType == streamtypeAUDIO) {
 588     if (! AVIFILE_FormatsEqual((PAVISTREAM)&This->iAVIStream, pSource))
 589       return AVIERR_UNSUPPORTED;
 590   } else {
 591     /* FIXME: streamtypeMIDI and streamtypeTEXT */
 592     return AVIERR_UNSUPPORTED;
 593   }
 594
 595   /* try to get an IEditStreamInternal interface */
 596   if (SUCCEEDED(IAVIStream_QueryInterface(pSource, &IID_IEditStreamInternal,
 597                                           (LPVOID*)&pInternal))) {
 598     pInternal->lpVtbl->GetEditStreamImpl(pInternal, (LPVOID*)&pEdit);
 599     pInternal->lpVtbl->Release(pInternal);
 600   }
 601
 602   /* for video must check for change of format */
 603   if (This->sInfo.fccType == streamtypeVIDEO) {
 604     if (! This->bDecompress) {
 605       /* Need to decompress if any of the following conditions matches:
 606        *  - pSource is an editable stream which decompresses
 607        *  - the nearest keyframe of pSource isn't lStart
 608        *  - the nearest keyframe of this stream isn't *plStart
 609        *  - the format of pSource doesn't match this one
 610        */
 611       if ((pEdit != NULL && pEdit->bDecompress) ||
 612           AVIStreamNearestKeyFrame(pSource, lStart) != lStart ||
 613           AVIStreamNearestKeyFrame((PAVISTREAM)&This->iAVIStream, *plStart) != *plStart ||
 614           (This->nStreams > 0 && !AVIFILE_FormatsEqual((PAVISTREAM)&This->iAVIStream, pSource))) {
 615         /* Use first stream part to get format to convert everything to */
 616         AVIFILE_ReadFrame(This, This->pStreams[0].pStream,
 617                           This->pStreams[0].dwStart);
 618
 619         /* Check if we could convert the source streams to the disired format... */
 620         if (pEdit != NULL) {
 621           if (FAILED(AVIFILE_FindStreamInTable(pEdit, lStart, &pStream,
 622                                                &startPos, &streamNr, TRUE)))
 623             return AVIERR_INTERNAL;
 624           for (n = lStart; n < lStart + lLength; streamNr++) {
 625             if (AVIFILE_ReadFrame(This, pEdit->pStreams[streamNr].pStream, startPos) == NULL)
 626               return AVIERR_BADFORMAT;
 627             startPos = pEdit->pStreams[streamNr].dwStart;
 628             n += pEdit->pStreams[streamNr].dwLength;
 629           }
 630         } else if (AVIFILE_ReadFrame(This, pSource, lStart) == NULL)
 631           return AVIERR_BADFORMAT;
 632
 633         This->bDecompress      = TRUE;
 634         This->sInfo.fccHandler = 0;
 635       }
 636     } else if (AVIFILE_ReadFrame(This, pSource, lStart) == NULL)
 637       return AVIERR_BADFORMAT; /* Can't convert source to own format */
 638   } /* FIXME: something special for the other formats? */
 639
 640   /* Make sure we have enough memory for parts */
 641   if (pEdit != NULL) {
 642     DWORD nLastStream;
 643
 644     AVIFILE_FindStreamInTable(pEdit, lStart + lLength, &pStream,
 645                               &endPos, &nLastStream, TRUE);
 646     AVIFILE_FindStreamInTable(pEdit, lStart, &pStream,
 647                               &startPos, &streamNr, FALSE);
 648     if (nLastStream == streamNr)
 649       nLastStream++;
 650
 651     nStreams = nLastStream - streamNr;
 652   } else
 653     nStreams = 1;
 654   if (This->nStreams + nStreams + 1 > This->nTableSize) {
 655     n = This->nStreams + nStreams + 33;
 656
 657     This->pStreams =
 658       GlobalReAllocPtr(This->pStreams, n * sizeof(EditStreamTable), GMEM_SHARE|GHND);
 659     if (This->pStreams == NULL)
 660       return AVIERR_MEMORY;
 661     This->nTableSize = n;
 662   }
 663
 664   if (plLength != NULL)
 665     *plLength = lLength;
 666
 667   /* now do the real work */
 668   if (This->sInfo.dwStart + This->sInfo.dwLength > *plStart) {
 669     AVIFILE_FindStreamInTable(This, *plStart, &pStream,
 670                               &startPos, &streamNr, FALSE);
 671     if (startPos != This->pStreams[streamNr].dwStart) {
 672       /* split stream streamNr at startPos */
 673       memmove(This->pStreams + streamNr + nStreams + 1,
 674               This->pStreams + streamNr,
 675               (This->nStreams + nStreams - streamNr + 1) * sizeof(EditStreamTable));
 676
 677       This->pStreams[streamNr + 2].dwLength =
 678         EditStreamEnd(This, streamNr + 2) - startPos;
 679       This->pStreams[streamNr + 2].dwStart = startPos;
 680       This->pStreams[streamNr].dwLength =
 681         startPos - This->pStreams[streamNr].dwStart;
 682       IAVIStream_AddRef(This->pStreams[streamNr].pStream);
 683       streamNr++;
 684     } else {
 685       /* insert before stream at streamNr */
 686       memmove(This->pStreams + streamNr + nStreams, This->pStreams + streamNr,
 687               (This->nStreams + nStreams - streamNr) * sizeof(EditStreamTable));
 688     }
 689   } else /* append the streams */
 690     streamNr = This->nStreams;
 691
 692   if (pEdit != NULL) {
 693     /* insert the parts of the editable stream instead of itself */
 694     AVIFILE_FindStreamInTable(pEdit, lStart + lLength, &pStream,
 695                               &endPos, NULL, FALSE);
 696     AVIFILE_FindStreamInTable(pEdit, lStart, &pStream, &startPos, &n, FALSE);
 697
 698     memcpy(This->pStreams + streamNr, pEdit->pStreams + n,
 699            nStreams * sizeof(EditStreamTable));
 700     if (This->pStreams[streamNr].dwStart < startPos) {
 701       This->pStreams[streamNr].dwLength =
 702         EditStreamEnd(This, streamNr) - startPos;
 703       This->pStreams[streamNr].dwStart  = startPos;
 704     }
 705     if (endPos < EditStreamEnd(This, streamNr + nStreams))
 706       This->pStreams[streamNr + nStreams].dwLength =
 707         endPos - This->pStreams[streamNr + nStreams].dwStart;
 708   } else {
 709     /* a simple stream */
 710     This->pStreams[streamNr].pStream  = pSource;
 711     This->pStreams[streamNr].dwStart  = lStart;
 712     This->pStreams[streamNr].dwLength = lLength;
 713   }
 714
 715   for (n = 0; n < nStreams; n++) {
 716     IAVIStream_AddRef(This->pStreams[streamNr + n].pStream);
 717     if (0 < streamNr + n &&
 718         This->pStreams[streamNr + n - 1].pStream != This->pStreams[streamNr + n].pStream) {
 719       This->sInfo.dwFlags |= AVISTREAMINFO_FORMATCHANGES;
 720       This->sInfo.dwFormatChangeCount++;
 721     }
 722   }
 723   This->sInfo.dwEditCount++;
 724   This->sInfo.dwLength += lLength;
 725   This->nStreams += nStreams;
 726
 727   return AVIERR_OK;
 728 }
 729
 730 static HRESULT WINAPI IAVIEditStream_fnClone(IAVIEditStream*iface,
 731                                              PAVISTREAM*ppResult)
 732 {
 733   ICOM_THIS(IAVIEditStreamImpl,iface);
 734   IAVIEditStreamImpl* pEdit;
 735   DWORD i;
 736
 737   TRACE("(%p,%p)\n",iface,ppResult);
 738
 739   if (ppResult == NULL)
 740     return AVIERR_BADPARAM;
 741   *ppResult = NULL;
 742
 743   pEdit = (IAVIEditStreamImpl*)AVIFILE_CreateEditStream(NULL);
 744   if (pEdit == NULL)
 745     return AVIERR_MEMORY;
 746   if (This->nStreams > pEdit->nTableSize) {
 747     pEdit->pStreams = GlobalReAllocPtr(pEdit->pStreams, This->nStreams * sizeof(EditStreamTable),GMEM_SHARE|GHND);
 748     if (pEdit->pStreams == NULL)
 749       return AVIERR_MEMORY;
 750     pEdit->nTableSize = This->nStreams;
 751   }
 752   pEdit->nStreams = This->nStreams;
 753   memcpy(pEdit->pStreams, This->pStreams,
 754          This->nStreams * sizeof(EditStreamTable));
 755   memcpy(&pEdit->sInfo,&This->sInfo,sizeof(This->sInfo));
 756   for (i = 0; i < This->nStreams; i++) {
 757     if (pEdit->pStreams[i].pStream != NULL)
 758       IAVIStream_AddRef(pEdit->pStreams[i].pStream);
 759   }
 760
 761   *ppResult = (PAVISTREAM)&pEdit->iAVIStream;
 762
 763   return AVIERR_OK;
 764 }
 765
 766 static HRESULT WINAPI IAVIEditStream_fnSetInfo(IAVIEditStream*iface,
 767                                                LPAVISTREAMINFOW asi,LONG size)
 768 {
 769   ICOM_THIS(IAVIEditStreamImpl,iface);
 770
 771   TRACE("(%p,%p,%ld)\n",iface,asi,size);
 772
 773   /* check parameters */
 774   if (asi == NULL)
 775     return AVIERR_BADPARAM;
 776   if (size != sizeof(AVISTREAMINFOW))
 777     return AVIERR_BADSIZE;
 778   if (asi->dwScale == 0 || asi->dwRate == 0 || (LONG)asi->dwQuality < -1 ||
 779       asi->dwQuality > ICQUALITY_HIGH)
 780     return AVIERR_ERROR;
 781
 782   This->sInfo.wLanguage = asi->wLanguage;
 783   This->sInfo.wPriority = asi->wPriority;
 784   This->sInfo.dwStart   = asi->dwStart;
 785   if (asi->dwRate != 0)
 786     This->sInfo.dwRate  = asi->dwRate;
 787   if (asi->dwScale != 0)
 788     This->sInfo.dwScale = asi->dwScale;
 789   if (asi->dwQuality <= ICQUALITY_HIGH)
 790     This->sInfo.dwQuality = ICQUALITY_HIGH;
 791   CopyRect(&This->sInfo.rcFrame, &asi->rcFrame);
 792   memcpy(&This->sInfo.szName, &asi->szName, sizeof(asi->szName));
 793   This->sInfo.dwEditCount++;
 794
 795   return AVIERR_OK;
 796 }
 797
 798 static HRESULT WINAPI IEditAVIStream_fnQueryInterface(IAVIStream*iface,
 799                                                       REFIID refiid,LPVOID*obj)
 800 {
 801   ICOM_THIS(IEditAVIStreamImpl,iface);
 802
 803   assert(This->pae != NULL);
 804
 805   return IAVIEditStream_QueryInterface((IAVIEditStream*)This->pae,refiid,obj);
 806 }
 807
 808 static ULONG   WINAPI IEditAVIStream_fnAddRef(IAVIStream*iface)
 809 {
 810   ICOM_THIS(IEditAVIStreamImpl,iface);
 811
 812   assert(This->pae != NULL);
 813
 814   return IAVIEditStream_AddRef((IAVIEditStream*)This->pae);
 815 }
 816
 817 static ULONG   WINAPI IEditAVIStream_fnRelease(IAVIStream*iface)
 818 {
 819   ICOM_THIS(IEditAVIStreamImpl,iface);
 820
 821   assert(This->pae != NULL);
 822
 823   return IAVIEditStream_Release((IAVIEditStream*)This->pae);
 824 }
 825
 826 static HRESULT WINAPI IEditAVIStream_fnCreate(IAVIStream*iface,
 827                                               LPARAM lParam1,LPARAM lParam2)
 828 {
 829   IAVIEditStreamImpl *This = ((IEditAVIStreamImpl*)iface)->pae;
 830
 831   if (lParam2 != 0)
 832     return AVIERR_ERROR;
 833
 834   if (This->pStreams == NULL) {
 835     This->pStreams =
 836       GlobalAllocPtr(GMEM_SHARE|GHND, 256 * sizeof(EditStreamTable));
 837     if (This->pStreams == NULL)
 838       return AVIERR_MEMORY;
 839     This->nTableSize = 256;
 840   }
 841
 842   if (lParam1 != 0) {
 843     IAVIStream_Info((PAVISTREAM)lParam1, &This->sInfo, sizeof(This->sInfo));
 844     IAVIStream_AddRef((PAVISTREAM)lParam1);
 845     This->pStreams[0].pStream  = (PAVISTREAM)lParam1;
 846     This->pStreams[0].dwStart  = This->sInfo.dwStart;
 847     This->pStreams[0].dwLength = This->sInfo.dwLength;
 848     This->nStreams = 1;
 849   }
 850   return AVIERR_OK;
 851 }
 852
 853 static HRESULT WINAPI IEditAVIStream_fnInfo(IAVIStream*iface,
 854                                             AVISTREAMINFOW *psi,LONG size)
 855 {
 856   ICOM_THIS(IEditAVIStreamImpl,iface);
 857
 858   TRACE("(%p,%p,%ld)\n",iface,psi,size);
 859
 860   assert(This->pae != NULL);
 861
 862   if (psi == NULL)
 863     return AVIERR_BADPARAM;
 864   if (size < 0)
 865     return AVIERR_BADSIZE;
 866
 867   if (This->pae->bDecompress)
 868     This->pae->sInfo.fccHandler = 0;
 869
 870   memcpy(psi, &This->pae->sInfo, min((DWORD)size, sizeof(This->pae->sInfo)));
 871
 872   if ((DWORD)size < sizeof(This->pae->sInfo))
 873     return AVIERR_BUFFERTOOSMALL;
 874   return AVIERR_OK;
 875 }
 876
 877 static LONG    WINAPI IEditAVIStream_fnFindSample(IAVIStream*iface,LONG pos,
 878                                                   LONG flags)
 879 {
 880   IAVIEditStreamImpl* const This = ((IEditAVIStreamImpl* const)iface)->pae;
 881   PAVISTREAM stream;
 882   DWORD      streamPos, streamNr;
 883
 884   TRACE("(%p,%ld,0x%08lX)\n",iface,pos,flags);
 885
 886   if (flags & FIND_FROM_START)
 887     pos = (LONG)This->sInfo.dwStart;
 888
 889   /* outside of stream? */
 890   if (pos < (LONG)This->sInfo.dwStart ||
 891       (LONG)This->sInfo.dwStart + (LONG)This->sInfo.dwLength <= pos)
 892     return -1;
 893
 894   /* map our position to a stream and position in it */
 895   if (AVIFILE_FindStreamInTable(This, pos, &stream, &streamPos,
 896                                 &streamNr, TRUE))
 897     return -1; /* doesn't exist */
 898
 899   if (This->bDecompress) {
 900     /* only one stream -- format changes only at start */
 901     if (flags & FIND_FORMAT)
 902       return (flags & FIND_NEXT ? -1 : 0);
 903
 904     /* FIXME: map positions back to us */
 905     return IAVIStream_FindSample(stream, streamPos, flags);
 906   } else {
 907     /* assume change of format every frame */
 908     return pos;
 909   }
 910 }
 911
 912 static HRESULT WINAPI IEditAVIStream_fnReadFormat(IAVIStream*iface,LONG pos,
 913                                                   LPVOID format,LONG*fmtsize)
 914 {
 915   IAVIEditStreamImpl* const This = ((IEditAVIStreamImpl* const)iface)->pae;
 916   LPBITMAPINFOHEADER  lp;
 917   PAVISTREAM          stream;
 918   DWORD               n;
 919   HRESULT             hr;
 920
 921   TRACE("(%p,%ld,%p,%p)\n",iface,pos,format,fmtsize);
 922
 923   if (fmtsize == NULL || pos < This->sInfo.dwStart ||
 924       This->sInfo.dwStart + This->sInfo.dwLength <= pos)
 925     return AVIERR_BADPARAM;
 926
 927   /* find stream corresponding to position */
 928   hr = AVIFILE_FindStreamInTable(This, pos, &stream, &n, NULL, FALSE);
 929   if (FAILED(hr))
 930     return hr;
 931
 932   if (! This->bDecompress)
 933     return IAVIStream_ReadFormat(stream, n, format, fmtsize);
 934
 935   lp = (LPBITMAPINFOHEADER)AVIFILE_ReadFrame(This, stream, n);
 936   if (lp == NULL)
 937     return AVIERR_ERROR;
 938   if (lp->biBitCount <= 8) {
 939     n  = (lp->biClrUsed > 0 ? lp->biClrUsed : 1 << lp->biBitCount);
 940     n *= sizeof(RGBQUAD);
 941   } else
 942     n = 0;
 943   n += lp->biSize;
 944
 945   memcpy(format, lp, min((LONG)n, *fmtsize));
 946   hr = ((LONG)n > *fmtsize ? AVIERR_BUFFERTOOSMALL : AVIERR_OK);
 947   *fmtsize = n;
 948
 949   return hr;
 950 }
 951
 952 static HRESULT WINAPI IEditAVIStream_fnSetFormat(IAVIStream*iface,LONG pos,
 953                                                  LPVOID format,LONG formatsize)
 954 {
 955   TRACE("(%p,%ld,%p,%ld)\n",iface,pos,format,formatsize);
 956
 957   return AVIERR_UNSUPPORTED;
 958 }
 959
 960 static HRESULT WINAPI IEditAVIStream_fnRead(IAVIStream*iface,LONG start,
 961                                             LONG samples,LPVOID buffer,
 962                                             LONG buffersize,LONG*bytesread,
 963                                             LONG*samplesread)
 964 {
 965   IAVIEditStreamImpl* const This = ((IEditAVIStreamImpl* const)iface)->pae;
 966   PAVISTREAM stream;
 967   DWORD   streamPos, streamNr;
 968   LONG    readBytes, readSamples, count;
 969   HRESULT hr;
 970
 971   TRACE("(%p,%ld,%ld,%p,%ld,%p,%p) -- 0x%08lX\n",iface,start,samples,
 972         buffer,buffersize,bytesread,samplesread,This->sInfo.fccType);
 973
 974   /* check parameters */
 975   if (bytesread != NULL)
 976     *bytesread = 0;
 977   if (samplesread != NULL)
 978     *samplesread = 0;
 979   if (buffersize < 0)
 980     return AVIERR_BADSIZE;
 981   if ((DWORD)start < This->sInfo.dwStart ||
 982       This->sInfo.dwStart + This->sInfo.dwLength < (DWORD)start)
 983     return AVIERR_BADPARAM;
 984
 985   if (! This->bDecompress) {
 986     /* audio like data -- sample-based */
 987     do {
 988       if (samples == 0)
 989         return AVIERR_OK; /* nothing at all or already done */
 990
 991       if (FAILED(AVIFILE_FindStreamInTable(This, start, &stream,
 992                                            &streamPos, &streamNr, FALSE)))
 993         return AVIERR_ERROR;
 994
 995       /* limit to end of the stream */
 996       count = samples;
 997       if (streamPos + count > EditStreamEnd(This, streamNr))
 998         count = EditStreamEnd(This, streamNr) - streamPos;
 999
1000       hr = IAVIStream_Read(stream, streamPos, count, buffer, buffersize,
1001                            &readBytes, &readSamples);
1002       if (FAILED(hr))
1003         return hr;
1004       if (readBytes == 0 && readSamples == 0 && count != 0)
1005         return AVIERR_FILEREAD; /* for bad stream implementations */
1006
1007       if (samplesread != NULL)
1008         *samplesread += readSamples;
1009       if (bytesread != NULL)
1010         *bytesread += readBytes;
1011       if (buffer != NULL) {
1012         buffer = ((LPBYTE)buffer)+readBytes;
1013         buffersize     -= readBytes;
1014       }
1015       start   += count;
1016       samples -= count;
1017     } while (This->sInfo.dwStart + This->sInfo.dwLength > start);
1018   } else {
1019     /* video like data -- frame-based */
1020     LPBITMAPINFOHEADER lp;
1021
1022     if (samples == 0)
1023       return AVIERR_OK;
1024
1025     if (FAILED(AVIFILE_FindStreamInTable(This, start, &stream,
1026                                          &streamPos, &streamNr, FALSE)))
1027       return AVIERR_ERROR;
1028
1029     lp = AVIFILE_ReadFrame(This, stream, streamPos);
1030     if (lp == NULL)
1031       return AVIERR_ERROR;
1032
1033     if (buffer != NULL) {
1034       /* need size of format to skip */
1035       if (lp->biBitCount <= 8) {
1036         count  = lp->biClrUsed > 0 ? lp->biClrUsed : 1 << lp->biBitCount;
1037         count *= sizeof(RGBQUAD);
1038       } else
1039         count = 0;
1040       count += lp->biSize;
1041
1042       if (buffersize < lp->biSizeImage)
1043         return AVIERR_BUFFERTOOSMALL;
1044       memcpy(buffer, (LPBYTE)lp + count, lp->biSizeImage);
1045     }
1046
1047     if (bytesread != NULL)
1048       *bytesread = lp->biSizeImage;
1049     if (samplesread != NULL)
1050       *samplesread = 1;
1051   }
1052
1053   return AVIERR_OK;
1054 }
1055
1056 static HRESULT WINAPI IEditAVIStream_fnWrite(IAVIStream*iface,LONG start,
1057                                              LONG samples,LPVOID buffer,
1058                                              LONG buffersize,DWORD flags,
1059                                              LONG*sampwritten,LONG*byteswritten)
1060 {
1061   TRACE("(%p,%ld,%ld,%p,%ld,0x%08lX,%p,%p)\n",iface,start,samples,buffer,
1062         buffersize,flags,sampwritten,byteswritten);
1063
1064   /* be sure return parameters have correct values */
1065   if (sampwritten != NULL)
1066     *sampwritten = 0;
1067   if (byteswritten != NULL)
1068     *byteswritten = 0;
1069
1070   return AVIERR_UNSUPPORTED;
1071 }
1072
1073 static HRESULT WINAPI IEditAVIStream_fnDelete(IAVIStream*iface,LONG start,
1074                                               LONG samples)
1075 {
1076   ICOM_THIS(IEditAVIStreamImpl,iface);
1077
1078   TRACE("(%p,%ld,%ld)\n",iface,start,samples);
1079
1080   return IAVIEditStream_Cut((IAVIEditStream*)This->pae,&start,&samples,NULL);
1081 }
1082
1083 static HRESULT WINAPI IEditAVIStream_fnReadData(IAVIStream*iface,DWORD fcc,
1084                                                 LPVOID lp,LONG *lpread)
1085 {
1086   IAVIEditStreamImpl* const This = ((IEditAVIStreamImpl* const)iface)->pae;
1087   DWORD n;
1088
1089   TRACE("(%p,0x%08lX,%p,%p)\n",iface,fcc,lp,lpread);
1090
1091   /* check parameters */
1092   if (lp == NULL || lpread == NULL)
1093     return AVIERR_BADPARAM;
1094
1095   /* simply ask every stream and return the first block found */
1096   for (n = 0; n < This->nStreams; n++) {
1097     HRESULT hr = IAVIStream_ReadData(This->pStreams[n].pStream,fcc,lp,lpread);
1098
1099     if (SUCCEEDED(hr))
1100       return hr;
1101   }
1102
1103   *lpread = 0;
1104   return AVIERR_NODATA;
1105 }
1106
1107 static HRESULT WINAPI IEditAVIStream_fnWriteData(IAVIStream*iface,DWORD fcc,
1108                                                  LPVOID lp,LONG size)
1109 {
1110   TRACE("(%p,0x%08lX,%p,%ld)\n",iface,fcc,lp,size);
1111
1112   return AVIERR_UNSUPPORTED;
1113 }
1114
1115 static HRESULT WINAPI IEditAVIStream_fnSetInfo(IAVIStream*iface,
1116                                                AVISTREAMINFOW*info,LONG len)
1117 {
1118   ICOM_THIS(IEditAVIStreamImpl,iface);
1119
1120   TRACE("(%p,%p,%ld)\n",iface,info,len);
1121
1122   return IAVIEditStream_SetInfo((IAVIEditStream*)This->pae,info,len);
1123 }
1124
1125 static HRESULT WINAPI IEditStreamInternal_fnQueryInterface(IEditStreamInternal*iface,REFIID refiid,LPVOID*obj)
1126 {
1127   ICOM_THIS(IEditStreamInternalImpl,iface);
1128
1129   assert(This->pae != NULL);
1130
1131   return IAVIEditStream_QueryInterface((IAVIEditStream*)This->pae, refiid, obj);
1132 }
1133
1134 static ULONG   WINAPI IEditStreamInternal_fnAddRef(IEditStreamInternal*iface)
1135 {
1136   ICOM_THIS(IEditStreamInternalImpl,iface);
1137
1138   assert(This->pae != NULL);
1139
1140   return IAVIEditStream_AddRef((IAVIEditStream*)This->pae);
1141 }
1142
1143 static ULONG   WINAPI IEditStreamInternal_fnRelease(IEditStreamInternal*iface)
1144 {
1145   ICOM_THIS(IEditStreamInternalImpl,iface);
1146
1147   assert(This->pae != NULL);
1148
1149   return IAVIEditStream_Release((IAVIEditStream*)This->pae);
1150 }
1151
1152 static HRESULT  WINAPI IEditStreamInternal_fnGetEditStreamImpl(IEditStreamInternal*iface,LPVOID*ppimpl)
1153 {
1154   ICOM_THIS(IEditStreamInternalImpl,iface);
1155
1156   TRACE("(%p,%p) -> %p\n", iface, ppimpl, This->pae);
1157
1158   assert(This->pae != NULL);
1159   assert(ppimpl != NULL);
1160
1161   *ppimpl = This->pae;
1162   return AVIERR_OK;
1163 }