Christian Costa : dmusic: Set instrument stream position where the instrument begins, not at the beginning of the instruments list. Simplify CustomLoad accordingly.
Module: wine Branch: master Commit: f30c18f3d245f40a0aca8708b30431f9949ed6ee URL: http://source.winehq.org/git/wine.git/?a=commit;h=f30c18f3d245f40a0aca8708b3... Author: Christian Costa <titan.costa(a)gmail.com> Date: Wed Dec 19 09:58:03 2012 +0100 dmusic: Set instrument stream position where the instrument begins, not at the beginning of the instruments list. Simplify CustomLoad accordingly. --- dlls/dmusic/collection.c | 7 +- dlls/dmusic/dmusic_private.h | 3 +- dlls/dmusic/instrument.c | 158 +++++++++++------------------------------ 3 files changed, 49 insertions(+), 119 deletions(-) diff --git a/dlls/dmusic/collection.c b/dlls/dmusic/collection.c index e4ac798..5002c9e 100644 --- a/dlls/dmusic/collection.c +++ b/dlls/dmusic/collection.c @@ -118,7 +118,7 @@ static HRESULT WINAPI IDirectMusicCollectionImpl_IDirectMusicCollection_GetInstr if (patch == inst_patch) { *instrument = inst_entry->pInstrument; IDirectMusicInstrument_AddRef(inst_entry->pInstrument); - IDirectMusicInstrumentImpl_Custom_Load(inst_entry->pInstrument, This->pStm); + IDirectMusicInstrumentImpl_CustomLoad(inst_entry->pInstrument, This->pStm); TRACE(": returning instrument %p\n", *instrument); return S_OK; } @@ -665,10 +665,11 @@ static HRESULT WINAPI IDirectMusicCollectionImpl_IPersistStream_Load(LPPERSISTST DMUSIC_CreateDirectMusicInstrumentImpl(&IID_IDirectMusicInstrument, (LPVOID*)&new_instrument->pInstrument, NULL); { IDirectMusicInstrumentImpl *instrument = impl_from_IDirectMusicInstrument(new_instrument->pInstrument); + /* Store offset and length, they will be needed when loading the instrument */ liMove.QuadPart = 0; IStream_Seek(stream, liMove, STREAM_SEEK_CUR, &dlibInstrumentPosition); - /* Store offset, it'll be needed later */ - instrument->liInstrumentPosition.QuadPart = dlibInstrumentPosition.QuadPart - (2 * sizeof(FOURCC) + sizeof(DWORD)); + instrument->liInstrumentPosition.QuadPart = dlibInstrumentPosition.QuadPart; + instrument->length = ListSize[1]; do { IStream_Read(stream, &chunk, sizeof(FOURCC) + sizeof(DWORD), NULL); ListCount[1] += sizeof(FOURCC) + sizeof(DWORD) + chunk.dwSize; diff --git a/dlls/dmusic/dmusic_private.h b/dlls/dmusic/dmusic_private.h index 3e625d6..3c05ceb 100644 --- a/dlls/dmusic/dmusic_private.h +++ b/dlls/dmusic/dmusic_private.h @@ -230,6 +230,7 @@ struct IDirectMusicInstrumentImpl { /* IDirectMusicInstrumentImpl fields */ LARGE_INTEGER liInstrumentPosition; /* offset in a stream where instrument chunk can be found */ + ULONG length; /* Length of the instrument in the stream */ LPGUID pInstrumentID; LPINSTHEADER pHeader; WCHAR wszName[DMUS_MAX_NAME]; @@ -242,7 +243,7 @@ static inline IDirectMusicInstrumentImpl *impl_from_IDirectMusicInstrument(IDire } /* custom :) */ -extern HRESULT IDirectMusicInstrumentImpl_Custom_Load (LPDIRECTMUSICINSTRUMENT iface, LPSTREAM pStm) DECLSPEC_HIDDEN; +extern HRESULT IDirectMusicInstrumentImpl_CustomLoad(IDirectMusicInstrument *iface, IStream *stream) DECLSPEC_HIDDEN; /********************************************************************** * Dll lifetime tracking declaration for dmusic.dll diff --git a/dlls/dmusic/instrument.c b/dlls/dmusic/instrument.c index 9c3d3d6..cc57313 100644 --- a/dlls/dmusic/instrument.c +++ b/dlls/dmusic/instrument.c @@ -156,140 +156,68 @@ static inline DWORD subtract_bytes(DWORD len, DWORD bytes) return len - bytes; } -static HRESULT load_instrument(IDirectMusicInstrumentImpl *This, IStream *stream, DWORD length) +static inline HRESULT advance_stream(IStream *stream, ULONG bytes) { - HRESULT hr; - FOURCC fourcc; - DWORD bytes; LARGE_INTEGER move; + HRESULT ret; - while(length){ - hr = read_from_stream(stream, &fourcc, sizeof(fourcc)); - if(FAILED(hr)) - return hr; - - hr = read_from_stream(stream, &bytes, sizeof(bytes)); - if(FAILED(hr)) - return hr; - - length = subtract_bytes(length, sizeof(fourcc) + sizeof(bytes)); - - switch(fourcc){ - case FOURCC_INSH: - TRACE("INSH chunk: %u bytes\n", bytes); - hr = read_from_stream(stream, This->pHeader, sizeof(*This->pHeader)); - if(FAILED(hr)) - return hr; - - move.QuadPart = bytes - sizeof(*This->pHeader); - hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL); - if(FAILED(hr)){ - WARN("IStream_Seek failed: %08x\n", hr); - return hr; - } - - length = subtract_bytes(length, bytes); - break; - - case FOURCC_DLID: - TRACE("DLID chunk: %u bytes\n", bytes); - hr = read_from_stream(stream, This->pInstrumentID, sizeof(*This->pInstrumentID)); - if(FAILED(hr)) - return hr; - - move.QuadPart = bytes - sizeof(*This->pInstrumentID); - hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL); - if(FAILED(hr)){ - WARN("IStream_Seek failed: %08x\n", hr); - return hr; - } - - length = subtract_bytes(length, bytes); - break; - - default: - TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(fourcc), bytes); - - move.QuadPart = bytes; - hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL); - if(FAILED(hr)){ - WARN("IStream_Seek failed: %08x\n", hr); - return hr; - } - - length = subtract_bytes(length, bytes); - break; - } - } + move.QuadPart = bytes; - return S_OK; + ret = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL); + if (FAILED(ret)) + WARN("IStream_Seek failed: %08x\n", ret); + + return ret; } -/* aux. function that completely loads instrument; my tests indicate that it's - called somewhere around IDirectMusicCollection_GetInstrument */ -HRESULT IDirectMusicInstrumentImpl_Custom_Load(LPDIRECTMUSICINSTRUMENT iface, LPSTREAM stream) +/* Function that loads all instrument data and which is called from IDirectMusicCollection_GetInstrument as in native */ +HRESULT IDirectMusicInstrumentImpl_CustomLoad(IDirectMusicInstrument *iface, IStream *stream) { IDirectMusicInstrumentImpl *This = impl_from_IDirectMusicInstrument(iface); - LARGE_INTEGER move; - FOURCC fourcc; - DWORD bytes; HRESULT hr; + DMUS_PRIVATE_CHUNK chunk; + ULONG length = This->length; - TRACE("(%p, %p, offset = %s)\n", This, stream, wine_dbgstr_longlong(This->liInstrumentPosition.QuadPart)); + TRACE("(%p, %p): offset = 0x%s, length = %u)\n", This, stream, wine_dbgstr_longlong(This->liInstrumentPosition.QuadPart), This->length); hr = IStream_Seek(stream, This->liInstrumentPosition, STREAM_SEEK_SET, NULL); - if(FAILED(hr)){ + if (FAILED(hr)) + { WARN("IStream_Seek failed: %08x\n", hr); - goto load_failure; + return DMUS_E_UNSUPPORTED_STREAM; } - hr = read_from_stream(stream, &fourcc, sizeof(fourcc)); - if(FAILED(hr)) - goto load_failure; + while (length) + { + hr = read_from_stream(stream, &chunk, sizeof(chunk)); + if (FAILED(hr)) + return DMUS_E_UNSUPPORTED_STREAM; - if(fourcc != FOURCC_LIST){ - WARN("Loading failed: Expected LIST chunk, got: %s\n", debugstr_fourcc(fourcc)); - goto load_failure; - } + length = subtract_bytes(length, sizeof(chunk) + chunk.dwSize); + + switch (chunk.fccID) + { + case FOURCC_INSH: + case FOURCC_DLID: + TRACE("Chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize); + + /* Instrument header and id are already set so just skip */ + hr = advance_stream(stream, chunk.dwSize); + if (FAILED(hr)) + return DMUS_E_UNSUPPORTED_STREAM; - hr = read_from_stream(stream, &bytes, sizeof(bytes)); - if(FAILED(hr)) - goto load_failure; - - TRACE("LIST chunk: %u bytes\n", bytes); - while(1){ - hr = read_from_stream(stream, &fourcc, sizeof(fourcc)); - if(FAILED(hr)) - goto load_failure; - - switch(fourcc){ - case FOURCC_INS: - TRACE("INS chunk: (no byte count)\n"); - hr = load_instrument(This, stream, bytes - sizeof(FOURCC)); - if(FAILED(hr)) - goto load_failure; - break; - - default: - hr = read_from_stream(stream, &bytes, sizeof(bytes)); - if(FAILED(hr)) - goto load_failure; - - TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(fourcc), bytes); - - move.QuadPart = bytes; - hr = IStream_Seek(stream, move, STREAM_SEEK_CUR, NULL); - if(FAILED(hr)){ - WARN("IStream_Seek failed: %08x\n", hr); - return hr; - } - - break; + break; + + default: + TRACE("Unknown chunk %s: %u bytes\n", debugstr_fourcc(chunk.fccID), chunk.dwSize); + + hr = advance_stream(stream, chunk.dwSize); + if (FAILED(hr)) + return DMUS_E_UNSUPPORTED_STREAM; + + break; } } return S_OK; - -load_failure: - return DMUS_E_UNSUPPORTED_STREAM; }
participants (1)
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Alexandre Julliard