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- Fixed many bugs which prevents writing. 

- Fixed segfault while parsing invalid index.
- Keep parsing of index even if streamheader says it's empty
- Fixed bug in AVIFILE_SaveIndex when stream is empty.
- Fixed bug in AVIFILE_WriteBlock, when chunk is not of even size.
This commit is contained in:
Michael Günnewig 2002-10-21 23:40:09 +00:00 committed by Alexandre Julliard
parent f6bcf23d6a
commit 4828568478
1 changed files with 52 additions and 31 deletions
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83
dlls/avifil32/avifile.c
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@ -162,7 +162,7 @@ typedef struct _IAVIStreamImpl {
DWORD cbBuffer; /* size of lpBuffer */
DWORD dwCurrentFrame; /* frame/block currently in lpBuffer */
DWORD dwLastFrame; /* last correct index in idxFrames */
LONG lLastFrame; /* last correct index in idxFrames */
AVIINDEXENTRY *idxFrames;
DWORD nIdxFrames; /* upper index limit of idxFrames */
AVIINDEXENTRY *idxFmtChanges;
@ -390,6 +390,8 @@ static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile *iface,PAVISTREAM *avis,
if (avis == NULL || asi == NULL)
return AVIERR_BADPARAM;
*avis = NULL;
/* Does the user have write permission? */
if ((This->uMode & MMIO_RWMODE) == 0)
return AVIERR_READONLY;
@ -422,6 +424,10 @@ static HRESULT WINAPI IAVIFile_fnCreateStream(IAVIFile *iface,PAVISTREAM *avis,
/* update our AVIFILEINFO structure */
AVIFILE_UpdateInfo(This);
/* return it */
*avis = (PAVISTREAM)This->ppStreams[n];
IAVIStream_AddRef(*avis);
return AVIERR_OK;
}
@ -757,7 +763,7 @@ static LONG WINAPI IAVIStream_fnFindSample(IAVIStream *iface, LONG pos,
if (flags & FIND_TYPE) {
if (flags & FIND_KEY) {
while (0 <= pos && pos <= This->dwLastFrame) {
while (0 <= pos && pos <= This->lLastFrame) {
if (This->idxFrames[pos].dwFlags & AVIIF_KEYFRAME)
goto RETURN_FOUND;
@ -767,7 +773,7 @@ static LONG WINAPI IAVIStream_fnFindSample(IAVIStream *iface, LONG pos,
pos--;
};
} else if (flags & FIND_ANY) {
while (0 <= pos && pos <= This->dwLastFrame) {
while (0 <= pos && pos <= This->lLastFrame) {
if (This->idxFrames[pos].dwChunkLength > 0)
goto RETURN_FOUND;
@ -882,11 +888,11 @@ static HRESULT WINAPI IAVIStream_fnSetFormat(IAVIStream *iface, LONG pos,
return AVIERR_READONLY;
/* can only set format before frame is written! */
if (This->dwLastFrame > pos)
if (This->lLastFrame > pos)
return AVIERR_UNSUPPORTED;
/* initial format or a formatchange? */
if (This->lpFormat != NULL) {
if (This->lpFormat == NULL) {
/* initial format */
if (This->paf->dwMoviChunkPos != 0)
return AVIERR_ERROR; /* user has used API in wrong sequnece! */
@ -1063,7 +1069,7 @@ static HRESULT WINAPI IAVIStream_fnRead(IAVIStream *iface, LONG start,
if (samples > 1)
samples = 1;
assert(start <= This->dwLastFrame);
assert(start <= This->lLastFrame);
size = This->idxFrames[start].dwChunkLength;
if (buffer != NULL && buffersize >= size) {
hr = AVIFILE_ReadBlock(This, start, buffer, size);
@ -1124,11 +1130,12 @@ static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream *iface, LONG start,
/* append to end of stream? */
if (start == -1) {
if (This->dwLastFrame == -1)
if (This->lLastFrame == -1)
start = This->sInfo.dwStart;
else
start = This->sInfo.dwLength;
}
} else if (This->lLastFrame == -1)
This->sInfo.dwStart = start;
if (This->sInfo.dwSampleSize != 0) {
/* fixed sample size -- audio like */
@ -1140,7 +1147,7 @@ static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream *iface, LONG start,
return AVIERR_UNSUPPORTED;
/* Convert position to frame/block */
start = This->dwLastFrame + 1;
start = This->lLastFrame + 1;
if ((This->paf->fInfo.dwFlags & AVIFILEINFO_ISINTERLEAVED) == 0) {
FIXME(": not interleaved, could collect audio data!\n");
@ -1151,11 +1158,11 @@ static HRESULT WINAPI IAVIStream_fnWrite(IAVIStream *iface, LONG start,
return AVIERR_UNSUPPORTED;
/* must we fill up with empty frames? */
if (This->dwLastFrame != -1) {
if (This->lLastFrame != -1) {
FOURCC ckid2 = MAKEAVICKID(cktypeDIBcompressed, This->nStream);
while (start > This->dwLastFrame + 1) {
hr = AVIFILE_WriteBlock(This, This->dwLastFrame + 1, ckid2, 0, NULL, 0);
while (start > This->lLastFrame + 1) {
hr = AVIFILE_WriteBlock(This, This->lLastFrame + 1, ckid2, 0, NULL, 0);
if (FAILED(hr))
return hr;
}
@ -1298,6 +1305,9 @@ static HRESULT WINAPI IAVIStream_fnSetInfo(IAVIStream *iface,
static HRESULT AVIFILE_AddFrame(IAVIStreamImpl *This, DWORD ckid, DWORD size, DWORD offset, DWORD flags)
{
/* pre-conditions */
assert(This != NULL);
switch (TWOCCFromFOURCC(ckid)) {
case cktypeDIBbits:
if (This->paf->fInfo.dwFlags & AVIFILEINFO_TRUSTCKTYPE)
@ -1323,7 +1333,7 @@ static HRESULT AVIFILE_AddFrame(IAVIStreamImpl *This, DWORD ckid, DWORD size, DW
if (This->idxFmtChanges == NULL)
return AVIERR_MEMORY;
This->idxFmtChanges[n].ckid = This->dwLastFrame;
This->idxFmtChanges[n].ckid = This->lLastFrame;
This->idxFmtChanges[n].dwFlags = 0;
This->idxFmtChanges[n].dwChunkOffset = offset;
This->idxFmtChanges[n].dwChunkLength = size;
@ -1341,25 +1351,29 @@ static HRESULT AVIFILE_AddFrame(IAVIStreamImpl *This, DWORD ckid, DWORD size, DW
};
/* first frame is alwasy a keyframe */
if (This->dwLastFrame == -1)
if (This->lLastFrame == -1)
flags |= AVIIF_KEYFRAME;
if (This->sInfo.dwSuggestedBufferSize < size)
This->sInfo.dwSuggestedBufferSize = size;
/* get memory for index */
if (This->idxFrames == NULL || This->dwLastFrame + 1 >= This->nIdxFrames) {
if (This->idxFrames == NULL || This->lLastFrame + 1 >= This->nIdxFrames) {
This->nIdxFrames += 512;
This->idxFrames = GlobalReAllocPtr(This->idxFrames, This->nIdxFrames * sizeof(AVIINDEXENTRY), GHND);
if (This->idxFrames == NULL)
return AVIERR_MEMORY;
}
This->dwLastFrame++;
This->idxFrames[This->dwLastFrame].ckid = ckid;
This->idxFrames[This->dwLastFrame].dwFlags = flags;
This->idxFrames[This->dwLastFrame].dwChunkOffset = offset;
This->idxFrames[This->dwLastFrame].dwChunkLength = size;
This->lLastFrame++;
This->idxFrames[This->lLastFrame].ckid = ckid;
This->idxFrames[This->lLastFrame].dwFlags = flags;
This->idxFrames[This->lLastFrame].dwChunkOffset = offset;
This->idxFrames[This->lLastFrame].dwChunkLength = size;
/* update AVISTREAMINFO structure if neccessary */
if (This->sInfo.dwLength < This->lLastFrame)
This->sInfo.dwLength = This->lLastFrame;
return AVIERR_OK;
}
@ -1413,7 +1427,7 @@ static void AVIFILE_ConstructAVIStream(IAVIFileImpl *paf, DWORD nr, LPAVISTRE
pstream->paf = paf;
pstream->nStream = nr;
pstream->dwCurrentFrame = -1;
pstream->dwLastFrame = -1;
pstream->lLastFrame = -1;
if (asi != NULL) {
memcpy(&pstream->sInfo, asi, sizeof(pstream->sInfo));
@ -1451,7 +1465,7 @@ static void AVIFILE_DestructAVIStream(IAVIStreamImpl *This)
assert(This != NULL);
This->dwCurrentFrame = -1;
This->dwLastFrame = -1;
This->lLastFrame = -1;
This->paf = NULL;
if (This->idxFrames != NULL) {
GlobalFreePtr(This->idxFrames);
@ -1746,7 +1760,7 @@ static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
* by parsing 'movi' chunk */
if ((This->fInfo.dwFlags & AVIFILEINFO_HASINDEX) == 0) {
for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++)
This->ppStreams[nStream]->dwLastFrame = -1;
This->ppStreams[nStream]->lLastFrame = -1;
if (mmioSeek(This->hmmio, ckLIST1.dwDataOffset + sizeof(DWORD), SEEK_SET) == -1) {
ERR(": Oops, can't seek back to 'movi' chunk!\n");
@ -1759,6 +1773,9 @@ static HRESULT AVIFILE_LoadFile(IAVIFileImpl *This)
if (mmioAscend(This->hmmio, &ck, 0) == S_OK) {
nStream = StreamFromFOURCC(ck.ckid);
if (nStream > This->fInfo.dwStreams)
return AVIERR_BADFORMAT;
AVIFILE_AddFrame(This->ppStreams[nStream], ck.ckid, ck.cksize,
ck.dwDataOffset - 2 * sizeof(DWORD), 0);
} else {
@ -1802,7 +1819,7 @@ static HRESULT AVIFILE_LoadIndex(IAVIFileImpl *This, DWORD size, DWORD offset)
for (n = 0; n < This->fInfo.dwStreams; n++) {
IAVIStreamImpl *pStream = This->ppStreams[n];
pStream->dwLastFrame = -1;
pStream->lLastFrame = -1;
if (pStream->idxFrames != NULL) {
GlobalFreePtr(pStream->idxFrames);
@ -1822,7 +1839,7 @@ static HRESULT AVIFILE_LoadIndex(IAVIFileImpl *This, DWORD size, DWORD offset)
pStream->idxFrames =
(AVIINDEXENTRY*)GlobalAllocPtr(GHND, pStream->nIdxFrames * sizeof(AVIINDEXENTRY));
if (pStream->idxFrames == NULL) {
if (pStream->idxFrames == NULL && pStream->nIdxFrames > 0) {
pStream->nIdxFrames = 0;
return AVIERR_MEMORY;
}
@ -1889,7 +1906,7 @@ static HRESULT AVIFILE_ReadBlock(IAVIStreamImpl *This, DWORD pos,
assert(This->paf != NULL);
assert(This->paf->hmmio != (HMMIO)NULL);
assert(This->sInfo.dwStart <= pos && pos < This->sInfo.dwLength);
assert(pos <= This->dwLastFrame);
assert(pos <= This->lLastFrame);
/* should we read as much as block gives us? */
if (size == 0 || size > This->idxFrames[pos].dwChunkLength)
@ -1953,7 +1970,7 @@ static void AVIFILE_SamplesToBlock(IAVIStreamImpl *This, LPLONG pos,
(*offset) *= This->sInfo.dwSampleSize;
/* convert bytes to block number */
for (block = 0; block <= This->dwLastFrame; block++) {
for (block = 0; block <= This->lLastFrame; block++) {
if (This->idxFrames[block].dwChunkLength <= *offset)
(*offset) -= This->idxFrames[block].dwChunkLength;
else
@ -2049,6 +2066,7 @@ static HRESULT AVIFILE_SaveFile(IAVIFileImpl *This)
strHdr.dwInitialFrames = pStream->sInfo.dwInitialFrames;
strHdr.dwScale = pStream->sInfo.dwScale;
strHdr.dwRate = pStream->sInfo.dwRate;
strHdr.dwStart = pStream->sInfo.dwStart;
strHdr.dwLength = pStream->sInfo.dwLength;
strHdr.dwSuggestedBufferSize = pStream->sInfo.dwSuggestedBufferSize;
strHdr.dwQuality = pStream->sInfo.dwQuality;
@ -2240,7 +2258,7 @@ static HRESULT AVIFILE_SaveIndex(IAVIFileImpl *This)
nFrame -= (lInitialFrames - pStream->sInfo.dwInitialFrames);
/* reached end of this stream? */
if (pStream->dwLastFrame <= nFrame)
if (pStream->lLastFrame <= nFrame)
continue;
if ((pStream->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
@ -2274,10 +2292,13 @@ static HRESULT AVIFILE_SaveIndex(IAVIFileImpl *This)
}
} else {
/* not interleaved -- write index for each stream at once */
for (nStream = 0; nStream < This->fInfo.dwStreams; n++) {
for (nStream = 0; nStream < This->fInfo.dwStreams; nStream++) {
pStream = This->ppStreams[nStream];
for (n = 0; n < pStream->dwLastFrame; n++) {
if (pStream->lLastFrame == -1)
pStream->lLastFrame = 0;
for (n = 0; n < pStream->lLastFrame; n++) {
if ((pStream->sInfo.dwFlags & AVISTREAMINFO_FORMATCHANGES) &&
(pStream->sInfo.dwFormatChangeCount != 0)) {
DWORD pos;
@ -2431,7 +2452,7 @@ static HRESULT AVIFILE_WriteBlock(IAVIStreamImpl *This, DWORD block,
return AVIERR_FILEWRITE;
This->paf->fDirty = TRUE;
This->paf->dwNextFramePos = ck.dwDataOffset + ck.cksize;
This->paf->dwNextFramePos = mmioSeek(This->paf->hmmio, 0, SEEK_CUR);
return AVIFILE_AddFrame(This, ckid, size, ck.dwDataOffset, flags);
}