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dmstyle: Simplify parsing of a style track list.
Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=53941
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parent
72597b170e
commit
8881ada9c9
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@ -303,8 +303,7 @@ static const IDirectMusicTrack8Vtbl dmtrack8_vtbl = {
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style_track_Join
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};
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static HRESULT parse_style_ref(IDirectMusicStyleTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
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IStream *pStm)
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static HRESULT parse_style_ref(IDirectMusicStyleTrack *This, DWORD size, IStream *pStm)
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{
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DMUS_PRIVATE_CHUNK Chunk;
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DWORD ListSize[3], ListCount[3];
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@ -314,12 +313,7 @@ static HRESULT parse_style_ref(IDirectMusicStyleTrack *This, DMUS_PRIVATE_CHUNK
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IDirectMusicObject* pObject = NULL;
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LPDMUS_PRIVATE_STYLE_ITEM pNewItem = NULL;
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if (pChunk->fccID != DMUS_FOURCC_STYLE_REF_LIST) {
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ERR_(dmfile)(": %s chunk should be a STYLE list\n", debugstr_fourcc (pChunk->fccID));
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return E_FAIL;
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}
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ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
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ListSize[0] = size - sizeof(FOURCC);
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ListCount[0] = 0;
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do {
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@ -387,107 +381,33 @@ static HRESULT parse_style_ref(IDirectMusicStyleTrack *This, DMUS_PRIVATE_CHUNK
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return S_OK;
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}
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static HRESULT parse_styletrack_list(IDirectMusicStyleTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
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IStream *pStm)
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{
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DMUS_PRIVATE_CHUNK Chunk;
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DWORD ListSize[3], ListCount[3];
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LARGE_INTEGER liMove; /* used when skipping chunks */
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HRESULT hr;
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if (pChunk->fccID != DMUS_FOURCC_STYLE_TRACK_LIST) {
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ERR_(dmfile)(": %s chunk should be a STYLETRACK list\n", debugstr_fourcc (pChunk->fccID));
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return E_FAIL;
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}
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ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
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ListCount[0] = 0;
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do {
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IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
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ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
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TRACE_(dmfile)(": %s chunk (size = %ld)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
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switch (Chunk.fccID) {
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case FOURCC_LIST: {
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IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
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TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
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ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
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ListCount[1] = 0;
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switch (Chunk.fccID) {
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case DMUS_FOURCC_STYLE_REF_LIST: {
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TRACE_(dmfile)(": STYLE_REF list\n");
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hr = parse_style_ref(This, &Chunk, pStm);
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if (FAILED(hr)) return hr;
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break;
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}
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default: {
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TRACE_(dmfile)(": unknown (skipping)\n");
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liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
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IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
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break;
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}
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}
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break;
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}
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default: {
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TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
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liMove.QuadPart = Chunk.dwSize;
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IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
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break;
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}
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}
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TRACE_(dmfile)(": ListCount[0] = %ld < ListSize[0] = %ld\n", ListCount[0], ListSize[0]);
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} while (ListCount[0] < ListSize[0]);
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return S_OK;
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}
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static inline IDirectMusicStyleTrack *impl_from_IPersistStream(IPersistStream *iface)
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{
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return CONTAINING_RECORD(iface, IDirectMusicStyleTrack, dmobj.IPersistStream_iface);
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}
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static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface, IStream *pStm)
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static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface, IStream *stream)
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{
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IDirectMusicStyleTrack *This = impl_from_IPersistStream(iface);
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DMUS_PRIVATE_CHUNK Chunk;
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LARGE_INTEGER liMove;
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HRESULT hr;
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FIXME("(%p, %p): Loading not fully implemented yet\n", This, pStm);
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IDirectMusicStyleTrack *This = impl_from_IPersistStream(iface);
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struct chunk_entry track = {0};
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struct chunk_entry chunk = {.parent = &track};
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HRESULT hr;
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IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
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TRACE_(dmfile)(": %s chunk (size = %ld)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
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switch (Chunk.fccID) {
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case FOURCC_LIST: {
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IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
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TRACE_(dmfile)(": %s chunk (size = %ld)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
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switch (Chunk.fccID) {
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case DMUS_FOURCC_STYLE_TRACK_LIST: {
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TRACE_(dmfile)(": Chord track list\n");
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hr = parse_styletrack_list(This, &Chunk, pStm);
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if (FAILED(hr)) return hr;
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break;
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}
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default: {
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TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
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liMove.QuadPart = Chunk.dwSize;
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IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
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return E_FAIL;
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}
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}
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TRACE_(dmfile)(": reading finished\n");
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break;
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}
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default: {
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TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
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liMove.QuadPart = Chunk.dwSize;
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IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
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return E_FAIL;
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}
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}
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TRACE("(%p, %p): Loading\n", This, stream);
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return S_OK;
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if (!stream)
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return E_POINTER;
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if (stream_get_chunk(stream, &track) != S_OK || track.id != FOURCC_LIST ||
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track.type != DMUS_FOURCC_STYLE_TRACK_LIST)
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return DMUS_E_TRACK_NOT_FOUND;
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while ((hr = stream_next_chunk(stream, &chunk)) == S_OK)
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if (chunk.id == FOURCC_LIST && chunk.type == DMUS_FOURCC_STYLE_REF_LIST)
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if (FAILED(hr = parse_style_ref(This, chunk.size, stream)))
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break;
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return SUCCEEDED(hr) ? S_OK : hr;
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}
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static const IPersistStreamVtbl persiststream_vtbl = {
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