2 * Copyright 2002 Michael Günnewig
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.
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.
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
19 #define COM_NO_WINDOWS_H
34 #include "avifile_private.h"
36 #include "wine/debug.h"
38 WINE_DEFAULT_DEBUG_CHANNEL(avifile);
40 #define MAX_FRAMESIZE (16 * 1024 * 1024)
41 #define MAX_FRAMESIZE_DIFF 512
43 /***********************************************************************/
45 static HRESULT WINAPI ICMStream_fnQueryInterface(IAVIStream*iface,REFIID refiid,LPVOID *obj);
46 static ULONG WINAPI ICMStream_fnAddRef(IAVIStream*iface);
47 static ULONG WINAPI ICMStream_fnRelease(IAVIStream* iface);
48 static HRESULT WINAPI ICMStream_fnCreate(IAVIStream*iface,LPARAM lParam1,LPARAM lParam2);
49 static HRESULT WINAPI ICMStream_fnInfo(IAVIStream*iface,AVISTREAMINFOW *psi,LONG size);
50 static LONG WINAPI ICMStream_fnFindSample(IAVIStream*iface,LONG pos,LONG flags);
51 static HRESULT WINAPI ICMStream_fnReadFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG *formatsize);
52 static HRESULT WINAPI ICMStream_fnSetFormat(IAVIStream*iface,LONG pos,LPVOID format,LONG formatsize);
53 static HRESULT WINAPI ICMStream_fnRead(IAVIStream*iface,LONG start,LONG samples,LPVOID buffer,LONG buffersize,LONG *bytesread,LONG *samplesread);
54 static HRESULT WINAPI ICMStream_fnWrite(IAVIStream*iface,LONG start,LONG samples,LPVOID buffer,LONG buffersize,DWORD flags,LONG *sampwritten,LONG *byteswritten);
55 static HRESULT WINAPI ICMStream_fnDelete(IAVIStream*iface,LONG start,LONG samples);
56 static HRESULT WINAPI ICMStream_fnReadData(IAVIStream*iface,DWORD fcc,LPVOID lp,LONG *lpread);
57 static HRESULT WINAPI ICMStream_fnWriteData(IAVIStream*iface,DWORD fcc,LPVOID lp,LONG size);
58 static HRESULT WINAPI ICMStream_fnSetInfo(IAVIStream*iface,AVISTREAMINFOW*info,LONG infolen);
60 struct IAVIStreamVtbl iicmst = {
61 ICMStream_fnQueryInterface,
66 ICMStream_fnFindSample,
67 ICMStream_fnReadFormat,
68 ICMStream_fnSetFormat,
73 ICMStream_fnWriteData,
77 typedef struct _IAVIStreamImpl {
79 IAVIStreamVtbl *lpVtbl;
82 /* IAVIStream stuff */
94 DWORD dwBytesPerFrame;
97 LPBITMAPINFOHEADER lpbiCur; /* current frame */
99 LPBITMAPINFOHEADER lpbiPrev; /* previous frame */
102 LPBITMAPINFOHEADER lpbiOutput; /* output format of codec */
104 LPBITMAPINFOHEADER lpbiInput; /* input format for codec */
108 /***********************************************************************/
110 static HRESULT AVIFILE_EncodeFrame(IAVIStreamImpl *This,
111 LPBITMAPINFOHEADER lpbi, LPVOID lpBits);
112 static HRESULT AVIFILE_OpenGetFrame(IAVIStreamImpl *This);
114 static inline void AVIFILE_Reset(IAVIStreamImpl *This)
118 This->dwLastQuality = ICQUALITY_HIGH;
119 This->dwUnusedBytes = 0;
122 HRESULT AVIFILE_CreateICMStream(REFIID riid, LPVOID *ppv)
124 IAVIStreamImpl *pstream;
127 assert(riid != NULL && ppv != NULL);
131 pstream = (IAVIStreamImpl*)LocalAlloc(LPTR, sizeof(IAVIStreamImpl));
133 return AVIERR_MEMORY;
135 pstream->lpVtbl = &iicmst;
136 AVIFILE_Reset(pstream);
138 hr = IAVIStream_QueryInterface((IAVIStream*)pstream, riid, ppv);
140 LocalFree((HLOCAL)pstream);
145 static HRESULT WINAPI ICMStream_fnQueryInterface(IAVIStream *iface,
146 REFIID refiid, LPVOID *obj)
148 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
150 TRACE("(%p,%s,%p)\n", iface, debugstr_guid(refiid), obj);
152 if (IsEqualGUID(&IID_IUnknown, refiid) ||
153 IsEqualGUID(&IID_IAVIStream, refiid)) {
155 IAVIStream_AddRef(iface);
160 return OLE_E_ENUM_NOMORE;
163 static ULONG WINAPI ICMStream_fnAddRef(IAVIStream *iface)
165 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
166 ULONG ref = InterlockedIncrement(&This->ref);
168 TRACE("(%p) -> %ld\n", iface, ref);
170 /* also add reference to the nested stream */
171 if (This->pStream != NULL)
172 IAVIStream_AddRef(This->pStream);
177 static ULONG WINAPI ICMStream_fnRelease(IAVIStream* iface)
179 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
180 ULONG ref = InterlockedDecrement(&This->ref);
182 TRACE("(%p) -> %ld\n", iface, ref);
186 if (This->pg != NULL) {
187 AVIStreamGetFrameClose(This->pg);
190 if (This->pStream != NULL) {
191 IAVIStream_Release(This->pStream);
192 This->pStream = NULL;
194 if (This->hic != NULL) {
195 if (This->lpbiPrev != NULL) {
196 ICDecompressEnd(This->hic);
197 GlobalFreePtr(This->lpbiPrev);
198 This->lpbiPrev = NULL;
201 ICCompressEnd(This->hic);
204 if (This->lpbiCur != NULL) {
205 GlobalFreePtr(This->lpbiCur);
206 This->lpbiCur = NULL;
209 if (This->lpbiOutput != NULL) {
210 GlobalFreePtr(This->lpbiOutput);
211 This->lpbiOutput = NULL;
214 if (This->lpbiInput != NULL) {
215 GlobalFreePtr(This->lpbiInput);
216 This->lpbiInput = NULL;
220 LocalFree((HLOCAL)This);
225 /* also release reference to the nested stream */
226 if (This->pStream != NULL)
227 IAVIStream_Release(This->pStream);
232 /* lParam1: PAVISTREAM
233 * lParam2: LPAVICOMPRESSOPTIONS
235 static HRESULT WINAPI ICMStream_fnCreate(IAVIStream *iface, LPARAM lParam1,
238 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
241 ICCOMPRESSFRAMES icFrames;
242 LPAVICOMPRESSOPTIONS pco = (LPAVICOMPRESSOPTIONS)lParam2;
244 TRACE("(%p,0x%08lX,0x%08lX)\n", iface, lParam1, lParam2);
246 /* check parameter */
247 if ((LPVOID)lParam1 == NULL)
248 return AVIERR_BADPARAM;
250 /* get infos from stream */
251 IAVIStream_Info((PAVISTREAM)lParam1, &This->sInfo, sizeof(This->sInfo));
252 if (This->sInfo.fccType != streamtypeVIDEO)
253 return AVIERR_ERROR; /* error in registry or AVIMakeCompressedStream */
255 /* add reference to the stream */
256 This->pStream = (PAVISTREAM)lParam1;
257 IAVIStream_AddRef(This->pStream);
261 if (pco != NULL && pco->fccHandler != comptypeDIB) {
262 /* we should compress */
263 This->sInfo.fccHandler = pco->fccHandler;
265 This->hic = ICOpen(ICTYPE_VIDEO, pco->fccHandler, ICMODE_COMPRESS);
266 if (This->hic == NULL)
267 return AVIERR_NOCOMPRESSOR;
269 /* restore saved state of codec */
270 if (pco->cbParms > 0 && pco->lpParms != NULL) {
271 ICSetState(This->hic, pco->lpParms, pco->cbParms);
274 /* set quality -- resolve default quality */
275 This->sInfo.dwQuality = pco->dwQuality;
276 if (pco->dwQuality == ICQUALITY_DEFAULT)
277 This->sInfo.dwQuality = ICGetDefaultQuality(This->hic);
279 /* get capabilities of codec */
280 ICGetInfo(This->hic, &icinfo, sizeof(icinfo));
281 This->dwICMFlags = icinfo.dwFlags;
284 if ((pco->dwFlags & AVICOMPRESSF_KEYFRAMES) &&
285 (icinfo.dwFlags & (VIDCF_TEMPORAL|VIDCF_FASTTEMPORALC))) {
286 This->lKeyFrameEvery = pco->dwKeyFrameEvery;
288 This->lKeyFrameEvery = 1;
291 if ((pco->dwFlags & AVICOMPRESSF_DATARATE)) {
292 /* Do we have a chance to reduce size to desired one? */
293 if ((icinfo.dwFlags & (VIDCF_CRUNCH|VIDCF_QUALITY)) == 0)
294 return AVIERR_NOCOMPRESSOR;
296 assert(This->sInfo.dwRate != 0);
298 This->dwBytesPerFrame = MulDiv(pco->dwBytesPerSecond,
299 This->sInfo.dwScale, This->sInfo.dwRate);
301 pco->dwBytesPerSecond = 0;
302 This->dwBytesPerFrame = 0;
305 if (icinfo.dwFlags & VIDCF_COMPRESSFRAMES) {
306 memset(&icFrames, 0, sizeof(icFrames));
307 icFrames.lpbiOutput = This->lpbiOutput;
308 icFrames.lpbiInput = This->lpbiInput;
309 icFrames.lFrameCount = This->sInfo.dwLength;
310 icFrames.lQuality = This->sInfo.dwQuality;
311 icFrames.lDataRate = pco->dwBytesPerSecond;
312 icFrames.lKeyRate = This->lKeyFrameEvery;
313 icFrames.dwRate = This->sInfo.dwRate;
314 icFrames.dwScale = This->sInfo.dwScale;
315 ICSendMessage(This->hic, ICM_COMPRESS_FRAMES_INFO,
316 (LPARAM)&icFrames, (LPARAM)sizeof(icFrames));
319 This->sInfo.fccHandler = comptypeDIB;
324 static HRESULT WINAPI ICMStream_fnInfo(IAVIStream *iface,LPAVISTREAMINFOW psi,
327 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
329 TRACE("(%p,%p,%ld)\n", iface, psi, size);
332 return AVIERR_BADPARAM;
334 return AVIERR_BADSIZE;
336 memcpy(psi, &This->sInfo, min((DWORD)size, sizeof(This->sInfo)));
338 if ((DWORD)size < sizeof(This->sInfo))
339 return AVIERR_BUFFERTOOSMALL;
343 static LONG WINAPI ICMStream_fnFindSample(IAVIStream *iface, LONG pos,
346 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
348 TRACE("(%p,%ld,0x%08lX)\n",iface,pos,flags);
350 if (flags & FIND_FROM_START) {
351 pos = This->sInfo.dwStart;
352 flags &= ~(FIND_FROM_START|FIND_PREV);
356 if (flags & FIND_RET)
357 WARN(": FIND_RET flags will be ignored!\n");
359 if (flags & FIND_KEY) {
360 if (This->hic == NULL)
361 return pos; /* we decompress so every frame is a keyframe */
363 if (flags & FIND_PREV) {
364 /* need to read old or new frames? */
365 if (This->lLastKey <= pos || pos < This->lCurrent)
366 IAVIStream_Read(iface, pos, 1, NULL, 0, NULL, NULL);
368 return This->lLastKey;
370 } else if (flags & FIND_ANY) {
371 return pos; /* We really don't know, reread is to expensive, so guess. */
372 } else if (flags & FIND_FORMAT) {
373 if (flags & FIND_PREV)
380 static HRESULT WINAPI ICMStream_fnReadFormat(IAVIStream *iface, LONG pos,
381 LPVOID format, LONG *formatsize)
383 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
385 LPBITMAPINFOHEADER lpbi;
388 TRACE("(%p,%ld,%p,%p)\n", iface, pos, format, formatsize);
390 if (formatsize == NULL)
391 return AVIERR_BADPARAM;
393 if (This->pg == NULL) {
394 hr = AVIFILE_OpenGetFrame(This);
400 lpbi = (LPBITMAPINFOHEADER)AVIStreamGetFrame(This->pg, pos);
402 return AVIERR_MEMORY;
404 if (This->hic == NULL) {
405 LONG size = lpbi->biSize + lpbi->biClrUsed * sizeof(RGBQUAD);
408 if (This->sInfo.dwSuggestedBufferSize < lpbi->biSizeImage)
409 This->sInfo.dwSuggestedBufferSize = lpbi->biSizeImage;
411 This->cbOutput = size;
412 if (format != NULL) {
413 if (This->lpbiOutput != NULL)
414 memcpy(format, This->lpbiOutput, min(*formatsize, This->cbOutput));
416 memcpy(format, lpbi, min(*formatsize, size));
419 } else if (format != NULL)
420 memcpy(format, This->lpbiOutput, min(*formatsize, This->cbOutput));
422 if (*formatsize < This->cbOutput)
423 hr = AVIERR_BUFFERTOOSMALL;
427 *formatsize = This->cbOutput;
431 static HRESULT WINAPI ICMStream_fnSetFormat(IAVIStream *iface, LONG pos,
432 LPVOID format, LONG formatsize)
434 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
436 TRACE("(%p,%ld,%p,%ld)\n", iface, pos, format, formatsize);
438 /* check parameters */
439 if (format == NULL || formatsize <= 0)
440 return AVIERR_BADPARAM;
442 /* We can only accept RGB data for writing */
443 if (((LPBITMAPINFOHEADER)format)->biCompression != BI_RGB) {
444 WARN(": need RGB data as input\n");
445 return AVIERR_UNSUPPORTED;
448 /* Input format already known?
449 * Changing of palette is supported, but be quiet if it's the same */
450 if (This->lpbiInput != NULL) {
451 if (This->cbInput != formatsize)
452 return AVIERR_UNSUPPORTED;
454 if (memcmp(format, This->lpbiInput, formatsize) == 0)
458 /* Does the nested stream support writing? */
459 if ((This->sInfo.dwCaps & AVIFILECAPS_CANWRITE) == 0)
460 return AVIERR_READONLY;
462 /* check if frame is already written */
463 if (This->sInfo.dwLength + This->sInfo.dwStart > pos)
464 return AVIERR_UNSUPPORTED;
466 /* check if we should compress */
467 if (This->sInfo.fccHandler == 0 ||
468 This->sInfo.fccHandler == mmioFOURCC('N','O','N','E'))
469 This->sInfo.fccHandler = comptypeDIB;
471 /* only pass through? */
472 if (This->sInfo.fccHandler == comptypeDIB)
473 return IAVIStream_SetFormat(This->pStream, pos, format, formatsize);
475 /* initial format setting? */
476 if (This->lpbiInput == NULL) {
479 assert(This->hic != NULL);
481 /* get memory for input format */
482 This->lpbiInput = (LPBITMAPINFOHEADER)GlobalAllocPtr(GHND, formatsize);
483 if (This->lpbiInput == NULL)
484 return AVIERR_MEMORY;
485 This->cbInput = formatsize;
486 memcpy(This->lpbiInput, format, formatsize);
488 /* get output format */
489 size = ICCompressGetFormatSize(This->hic, This->lpbiInput);
490 if (size < sizeof(BITMAPINFOHEADER))
491 return AVIERR_COMPRESSOR;
492 This->lpbiOutput = (LPBITMAPINFOHEADER)GlobalAllocPtr(GHND, size);
493 if (This->lpbiOutput == NULL)
494 return AVIERR_MEMORY;
495 This->cbOutput = size;
496 if (ICCompressGetFormat(This->hic,This->lpbiInput,This->lpbiOutput) < S_OK)
497 return AVIERR_COMPRESSOR;
499 /* update AVISTREAMINFO structure */
500 This->sInfo.rcFrame.right =
501 This->sInfo.rcFrame.left + This->lpbiOutput->biWidth;
502 This->sInfo.rcFrame.bottom =
503 This->sInfo.rcFrame.top + This->lpbiOutput->biHeight;
505 /* prepare codec for compression */
506 if (ICCompressBegin(This->hic, This->lpbiInput, This->lpbiOutput) != S_OK)
507 return AVIERR_COMPRESSOR;
509 /* allocate memory for compressed frame */
510 size = ICCompressGetSize(This->hic, This->lpbiInput, This->lpbiOutput);
512 (LPBITMAPINFOHEADER)GlobalAllocPtr(GMEM_MOVEABLE, This->cbOutput + size);
513 if (This->lpbiCur == NULL)
514 return AVIERR_MEMORY;
515 memcpy(This->lpbiCur, This->lpbiOutput, This->cbOutput);
516 This->lpCur = DIBPTR(This->lpbiCur);
518 /* allocate memory for last frame if needed */
519 if (This->lKeyFrameEvery != 1 &&
520 (This->dwICMFlags & VIDCF_FASTTEMPORALC) == 0) {
521 size = ICDecompressGetFormatSize(This->hic, This->lpbiOutput);
522 This->lpbiPrev = (LPBITMAPINFOHEADER)GlobalAllocPtr(GHND, size);
523 if (This->lpbiPrev == NULL)
524 return AVIERR_MEMORY;
525 if (ICDecompressGetFormat(This->hic, This->lpbiOutput, This->lpbiPrev) < S_OK)
526 return AVIERR_COMPRESSOR;
528 if (This->lpbiPrev->biSizeImage == 0) {
529 This->lpbiPrev->biSizeImage =
530 DIBWIDTHBYTES(*This->lpbiPrev) * This->lpbiPrev->biHeight;
533 /* get memory for format and picture */
534 size += This->lpbiPrev->biSizeImage;
536 (LPBITMAPINFOHEADER)GlobalReAllocPtr(This->lpbiPrev,size,GMEM_MOVEABLE);
537 if (This->lpbiPrev == NULL)
538 return AVIERR_MEMORY;
539 This->lpPrev = DIBPTR(This->lpbiPrev);
541 /* prepare codec also for decompression */
542 if (ICDecompressBegin(This->hic,This->lpbiOutput,This->lpbiPrev) != S_OK)
543 return AVIERR_COMPRESSOR;
546 /* format change -- check that's only the palette */
547 LPBITMAPINFOHEADER lpbi = (LPBITMAPINFOHEADER)format;
549 if (lpbi->biSize != This->lpbiInput->biSize ||
550 lpbi->biWidth != This->lpbiInput->biWidth ||
551 lpbi->biHeight != This->lpbiInput->biHeight ||
552 lpbi->biBitCount != This->lpbiInput->biBitCount ||
553 lpbi->biPlanes != This->lpbiInput->biPlanes ||
554 lpbi->biCompression != This->lpbiInput->biCompression ||
555 lpbi->biClrUsed != This->lpbiInput->biClrUsed)
556 return AVIERR_UNSUPPORTED;
558 /* get new output format */
559 if (ICCompressGetFormat(This->hic, lpbi, This->lpbiOutput) < S_OK)
560 return AVIERR_BADFORMAT;
562 /* restart compression */
563 ICCompressEnd(This->hic);
564 if (ICCompressBegin(This->hic, lpbi, This->lpbiOutput) != S_OK)
565 return AVIERR_COMPRESSOR;
567 /* check if we need to restart decompresion also */
568 if (This->lKeyFrameEvery != 1 &&
569 (This->dwICMFlags & VIDCF_FASTTEMPORALC) == 0) {
570 ICDecompressEnd(This->hic);
571 if (ICDecompressGetFormat(This->hic,This->lpbiOutput,This->lpbiPrev) < S_OK)
572 return AVIERR_COMPRESSOR;
573 if (ICDecompressBegin(This->hic,This->lpbiOutput,This->lpbiPrev) != S_OK)
574 return AVIERR_COMPRESSOR;
578 /* tell nested stream the new format */
579 return IAVIStream_SetFormat(This->pStream, pos,
580 This->lpbiOutput, This->cbOutput);
583 static HRESULT WINAPI ICMStream_fnRead(IAVIStream *iface, LONG start,
584 LONG samples, LPVOID buffer,
585 LONG buffersize, LPLONG bytesread,
588 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
590 LPBITMAPINFOHEADER lpbi;
592 TRACE("(%p,%ld,%ld,%p,%ld,%p,%p)\n", iface, start, samples, buffer,
593 buffersize, bytesread, samplesread);
595 /* clear return parameters if given */
596 if (bytesread != NULL)
598 if (samplesread != NULL)
604 /* check parameters */
605 if (samples != 1 && (bytesread == NULL && samplesread == NULL))
606 return AVIERR_BADPARAM;
607 if (samples == -1) /* read as much as we could */
610 if (This->pg == NULL) {
611 HRESULT hr = AVIFILE_OpenGetFrame(This);
617 /* compress or decompress? */
618 if (This->hic == NULL) {
620 lpbi = (LPBITMAPINFOHEADER)AVIStreamGetFrame(This->pg, start);
622 return AVIERR_MEMORY;
624 if (buffer != NULL && buffersize > 0) {
625 /* check buffersize */
626 if (buffersize < lpbi->biSizeImage)
627 return AVIERR_BUFFERTOOSMALL;
629 memcpy(buffer, DIBPTR(lpbi), lpbi->biSizeImage);
632 /* fill out return parameters if given */
633 if (bytesread != NULL)
634 *bytesread = lpbi->biSizeImage;
637 if (This->lCurrent > start)
640 while (start > This->lCurrent) {
643 lpbi = (LPBITMAPINFOHEADER)AVIStreamGetFrame(This->pg, ++This->lCurrent);
646 return AVIERR_MEMORY;
649 hr = AVIFILE_EncodeFrame(This, lpbi, DIBPTR(lpbi));
656 if (buffer != NULL && buffersize > 0) {
657 /* check buffersize */
658 if (This->lpbiCur->biSizeImage > buffersize)
659 return AVIERR_BUFFERTOOSMALL;
661 memcpy(buffer, This->lpCur, This->lpbiCur->biSizeImage);
664 /* fill out return parameters if given */
665 if (bytesread != NULL)
666 *bytesread = This->lpbiCur->biSizeImage;
669 /* fill out return parameters if given */
670 if (samplesread != NULL)
676 static HRESULT WINAPI ICMStream_fnWrite(IAVIStream *iface, LONG start,
677 LONG samples, LPVOID buffer,
678 LONG buffersize, DWORD flags,
682 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
686 TRACE("(%p,%ld,%ld,%p,%ld,0x%08lX,%p,%p)\n", iface, start, samples,
687 buffer, buffersize, flags, sampwritten, byteswritten);
689 /* clear return parameters if given */
690 if (sampwritten != NULL)
692 if (byteswritten != NULL)
695 /* check parameters */
696 if (buffer == NULL && (buffersize > 0 || samples > 0))
697 return AVIERR_BADPARAM;
699 if (This->sInfo.fccHandler == comptypeDIB) {
700 /* only pass through */
701 flags |= AVIIF_KEYFRAME;
703 return IAVIStream_Write(This->pStream, start, samples, buffer, buffersize,
704 flags, sampwritten, byteswritten);
706 /* compress data before writing to pStream */
707 if (samples != 1 && (sampwritten == NULL && byteswritten == NULL))
708 return AVIERR_UNSUPPORTED;
710 This->lCurrent = start;
711 hr = AVIFILE_EncodeFrame(This, This->lpbiInput, buffer);
715 if (This->lLastKey == start)
716 flags |= AVIIF_KEYFRAME;
718 return IAVIStream_Write(This->pStream, start, samples, This->lpCur,
719 This->lpbiCur->biSizeImage, flags, byteswritten,
724 static HRESULT WINAPI ICMStream_fnDelete(IAVIStream *iface, LONG start,
727 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
729 TRACE("(%p,%ld,%ld)\n", iface, start, samples);
731 return IAVIStream_Delete(This->pStream, start, samples);
734 static HRESULT WINAPI ICMStream_fnReadData(IAVIStream *iface, DWORD fcc,
735 LPVOID lp, LPLONG lpread)
737 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
739 TRACE("(%p,0x%08lX,%p,%p)\n", iface, fcc, lp, lpread);
741 assert(This->pStream != NULL);
743 return IAVIStream_ReadData(This->pStream, fcc, lp, lpread);
746 static HRESULT WINAPI ICMStream_fnWriteData(IAVIStream *iface, DWORD fcc,
747 LPVOID lp, LONG size)
749 IAVIStreamImpl *This = (IAVIStreamImpl *)iface;
751 TRACE("(%p,0x%08lx,%p,%ld)\n", iface, fcc, lp, size);
753 assert(This->pStream != NULL);
755 return IAVIStream_WriteData(This->pStream, fcc, lp, size);
758 static HRESULT WINAPI ICMStream_fnSetInfo(IAVIStream *iface,
759 LPAVISTREAMINFOW info, LONG infolen)
761 FIXME("(%p,%p,%ld): stub\n", iface, info, infolen);
766 /***********************************************************************/
768 static HRESULT AVIFILE_EncodeFrame(IAVIStreamImpl *This,
769 LPBITMAPINFOHEADER lpbi, LPVOID lpBits)
771 DWORD dwMinQual, dwMaxQual, dwCurQual;
775 BOOL bDecreasedQual = FALSE;
779 /* make lKeyFrameEvery and at start a keyframe */
780 if ((This->lKeyFrameEvery != 0 &&
781 (This->lCurrent - This->lLastKey) >= This->lKeyFrameEvery) ||
782 This->lCurrent == This->sInfo.dwStart) {
783 idxFlags = AVIIF_KEYFRAME;
784 icmFlags = ICCOMPRESS_KEYFRAME;
787 if (This->lKeyFrameEvery != 0) {
788 if (This->lCurrent == This->sInfo.dwStart) {
789 if (idxFlags & AVIIF_KEYFRAME) {
790 /* for keyframes allow to consume all unused bytes */
791 dwRequest = This->dwBytesPerFrame + This->dwUnusedBytes;
792 This->dwUnusedBytes = 0;
794 /* for non-keyframes only allow something of the unused bytes to be consumed */
798 if (This->dwBytesPerFrame >= This->dwUnusedBytes)
799 tmp1 = This->dwBytesPerFrame / This->lKeyFrameEvery;
800 tmp2 = (This->dwUnusedBytes + tmp1) / This->lKeyFrameEvery;
802 dwRequest = This->dwBytesPerFrame - tmp1 + tmp2;
803 This->dwUnusedBytes -= tmp2;
806 dwRequest = MAX_FRAMESIZE;
808 /* only one keyframe at start desired */
809 if (This->lCurrent == This->sInfo.dwStart) {
810 dwRequest = This->dwBytesPerFrame + This->dwUnusedBytes;
811 This->dwUnusedBytes = 0;
813 dwRequest = MAX_FRAMESIZE;
816 /* must we check for framesize to gain requested
817 * datarate or could we trust codec? */
818 doSizeCheck = (dwRequest != 0 && ((This->dwICMFlags & (VIDCF_CRUNCH|VIDCF_QUALITY)) == 0));
820 dwMaxQual = dwCurQual = This->sInfo.dwQuality;
821 dwMinQual = ICQUALITY_LOW;
824 if ((icmFlags & ICCOMPRESS_KEYFRAME) == 0 &&
825 (This->dwICMFlags & VIDCF_FASTTEMPORALC) == 0)
832 hr = ICCompress(This->hic,icmFlags,This->lpbiCur,This->lpCur,lpbi,lpBits,
833 &idxCkid, &idxFlags, This->lCurrent, dwRequest, dwCurQual,
834 noPrev ? NULL:This->lpbiPrev, noPrev ? NULL:This->lpPrev);
835 if (hr == ICERR_NEWPALETTE) {
836 FIXME(": codec has changed palette -- unhandled!\n");
837 } else if (hr != ICERR_OK)
838 return AVIERR_COMPRESSOR;
840 /* need to check for framesize */
844 if (dwRequest >= This->lpbiCur->biSizeImage) {
845 /* frame is smaller -- try to maximize quality */
846 if (dwMaxQual - dwCurQual > 10) {
847 DWORD tmp = dwRequest / 8;
849 if (tmp < MAX_FRAMESIZE_DIFF)
850 tmp = MAX_FRAMESIZE_DIFF;
852 if (tmp < dwRequest - This->lpbiCur->biSizeImage && bDecreasedQual) {
854 dwCurQual = (dwMinQual + dwMaxQual) / 2;
860 } else if (dwMaxQual - dwMinQual <= 1) {
863 dwMaxQual = dwCurQual;
865 if (bDecreasedQual || dwCurQual == This->dwLastQuality)
866 dwCurQual = (dwMinQual + dwMaxQual) / 2;
868 FIXME(": no new quality computed min=%lu cur=%lu max=%lu last=%lu\n",
869 dwMinQual, dwCurQual, dwMaxQual, This->dwLastQuality);
871 bDecreasedQual = TRUE;
875 /* remember some values */
876 This->dwLastQuality = dwCurQual;
877 This->dwUnusedBytes = dwRequest - This->lpbiCur->biSizeImage;
878 if (icmFlags & ICCOMPRESS_KEYFRAME)
879 This->lLastKey = This->lCurrent;
881 /* Does we manage previous frame? */
882 if (This->lpPrev != NULL && This->lKeyFrameEvery != 1)
883 ICDecompress(This->hic, 0, This->lpbiCur, This->lpCur,
884 This->lpbiPrev, This->lpPrev);
889 static HRESULT AVIFILE_OpenGetFrame(IAVIStreamImpl *This)
891 LPBITMAPINFOHEADER lpbi;
895 assert(This != NULL);
896 assert(This->pStream != NULL);
897 assert(This->pg == NULL);
899 This->pg = AVIStreamGetFrameOpen(This->pStream, NULL);
900 if (This->pg == NULL)
903 /* When we only decompress this is enough */
904 if (This->sInfo.fccHandler == comptypeDIB)
907 assert(This->hic != NULL);
908 assert(This->lpbiOutput == NULL);
910 /* get input format */
911 lpbi = (LPBITMAPINFOHEADER)AVIStreamGetFrame(This->pg, This->sInfo.dwStart);
913 return AVIERR_MEMORY;
915 /* get memory for output format */
916 size = ICCompressGetFormatSize(This->hic, lpbi);
917 if ((LONG)size < (LONG)sizeof(BITMAPINFOHEADER))
918 return AVIERR_COMPRESSOR;
919 This->lpbiOutput = (LPBITMAPINFOHEADER)GlobalAllocPtr(GHND, size);
920 if (This->lpbiOutput == NULL)
921 return AVIERR_MEMORY;
922 This->cbOutput = size;
924 if (ICCompressGetFormat(This->hic, lpbi, This->lpbiOutput) < S_OK)
925 return AVIERR_BADFORMAT;
927 /* update AVISTREAMINFO structure */
928 This->sInfo.rcFrame.right =
929 This->sInfo.rcFrame.left + This->lpbiOutput->biWidth;
930 This->sInfo.rcFrame.bottom =
931 This->sInfo.rcFrame.top + This->lpbiOutput->biHeight;
932 This->sInfo.dwSuggestedBufferSize =
933 ICCompressGetSize(This->hic, lpbi, This->lpbiOutput);
935 /* prepare codec for compression */
936 if (ICCompressBegin(This->hic, lpbi, This->lpbiOutput) != S_OK)
937 return AVIERR_COMPRESSOR;
939 /* allocate memory for current frame */
940 size += This->sInfo.dwSuggestedBufferSize;
941 This->lpbiCur = (LPBITMAPINFOHEADER)GlobalAllocPtr(GMEM_MOVEABLE, size);
942 if (This->lpbiCur == NULL)
943 return AVIERR_MEMORY;
944 memcpy(This->lpbiCur, This->lpbiOutput, This->cbOutput);
945 This->lpCur = DIBPTR(This->lpbiCur);
947 /* allocate memory for last frame if needed */
948 if (This->lKeyFrameEvery != 1 &&
949 (This->dwICMFlags & VIDCF_FASTTEMPORALC) == 0) {
950 size = ICDecompressGetFormatSize(This->hic, This->lpbiOutput);
951 This->lpbiPrev = (LPBITMAPINFOHEADER)GlobalAllocPtr(GHND, size);
952 if (This->lpbiPrev == NULL)
953 return AVIERR_MEMORY;
954 if (ICDecompressGetFormat(This->hic, This->lpbiOutput, This->lpbiPrev) < S_OK)
955 return AVIERR_COMPRESSOR;
957 if (This->lpbiPrev->biSizeImage == 0) {
958 This->lpbiPrev->biSizeImage =
959 DIBWIDTHBYTES(*This->lpbiPrev) * This->lpbiPrev->biHeight;
962 /* get memory for format and picture */
963 size += This->lpbiPrev->biSizeImage;
965 (LPBITMAPINFOHEADER)GlobalReAllocPtr(This->lpbiPrev,size,GMEM_MOVEABLE);
966 if (This->lpbiPrev == NULL)
967 return AVIERR_MEMORY;
968 This->lpPrev = DIBPTR(This->lpbiPrev);
970 /* prepare codec also for decompression */
971 if (ICDecompressBegin(This->hic,This->lpbiOutput,This->lpbiPrev) != S_OK)
972 return AVIERR_COMPRESSOR;