[4/4] windowscodecs: Implement IWICComponentFactory::CreateDecoderFromFileHandle.
Hans Leidekker
hans at codeweavers.com
Wed Feb 6 06:53:21 CST 2013
---
dlls/windowscodecs/imgfactory.c | 19 ++-
dlls/windowscodecs/stream.c | 239 ++++++++++++++++++++++++++++++++
dlls/windowscodecs/wincodecs_private.h | 2 +
3 files changed, 258 insertions(+), 2 deletions(-)
diff --git a/dlls/windowscodecs/imgfactory.c b/dlls/windowscodecs/imgfactory.c
index 223b041..9a6c818 100644
--- a/dlls/windowscodecs/imgfactory.c
+++ b/dlls/windowscodecs/imgfactory.c
@@ -238,9 +238,24 @@ static HRESULT WINAPI ComponentFactory_CreateDecoderFromFileHandle(
IWICComponentFactory *iface, ULONG_PTR hFile, const GUID *pguidVendor,
WICDecodeOptions metadataOptions, IWICBitmapDecoder **ppIDecoder)
{
- FIXME("(%p,%lx,%s,%u,%p): stub\n", iface, hFile, debugstr_guid(pguidVendor),
+ IWICStream *stream;
+ HRESULT hr;
+
+ TRACE("(%p,%lx,%s,%u,%p)\n", iface, hFile, debugstr_guid(pguidVendor),
metadataOptions, ppIDecoder);
- return E_NOTIMPL;
+
+ hr = StreamImpl_Create(&stream);
+ if (SUCCEEDED(hr))
+ {
+ hr = stream_initialize_from_filehandle(stream, (HANDLE)hFile);
+ if (SUCCEEDED(hr))
+ {
+ hr = IWICComponentFactory_CreateDecoderFromStream(iface, (IStream*)stream,
+ pguidVendor, metadataOptions, ppIDecoder);
+ }
+ IWICStream_Release(stream);
+ }
+ return hr;
}
static HRESULT WINAPI ComponentFactory_CreateComponentInfo(IWICComponentFactory *iface,
diff --git a/dlls/windowscodecs/stream.c b/dlls/windowscodecs/stream.c
index a123b9d..f6bfedf 100644
--- a/dlls/windowscodecs/stream.c
+++ b/dlls/windowscodecs/stream.c
@@ -264,6 +264,175 @@ static const IStreamVtbl StreamOnMemory_Vtbl =
};
/******************************************
+ * StreamOnFileHandle implementation (internal)
+ *
+ */
+typedef struct StreamOnFileHandle {
+ IStream IStream_iface;
+ LONG ref;
+
+ HANDLE map;
+ void *mem;
+ IWICStream *stream;
+} StreamOnFileHandle;
+
+static inline StreamOnFileHandle *StreamOnFileHandle_from_IStream(IStream *iface)
+{
+ return CONTAINING_RECORD(iface, StreamOnFileHandle, IStream_iface);
+}
+
+static HRESULT WINAPI StreamOnFileHandle_QueryInterface(IStream *iface,
+ REFIID iid, void **ppv)
+{
+ TRACE("(%p,%s,%p)\n", iface, debugstr_guid(iid), ppv);
+
+ if (!ppv) return E_INVALIDARG;
+
+ if (IsEqualIID(&IID_IUnknown, iid) || IsEqualIID(&IID_IStream, iid) ||
+ IsEqualIID(&IID_ISequentialStream, iid))
+ {
+ *ppv = iface;
+ IUnknown_AddRef((IUnknown*)*ppv);
+ return S_OK;
+ }
+ else
+ {
+ *ppv = NULL;
+ return E_NOINTERFACE;
+ }
+}
+
+static ULONG WINAPI StreamOnFileHandle_AddRef(IStream *iface)
+{
+ StreamOnFileHandle *This = StreamOnFileHandle_from_IStream(iface);
+ ULONG ref = InterlockedIncrement(&This->ref);
+
+ TRACE("(%p) refcount=%u\n", iface, ref);
+
+ return ref;
+}
+
+static ULONG WINAPI StreamOnFileHandle_Release(IStream *iface)
+{
+ StreamOnFileHandle *This = StreamOnFileHandle_from_IStream(iface);
+ ULONG ref = InterlockedDecrement(&This->ref);
+
+ TRACE("(%p) refcount=%u\n", iface, ref);
+
+ if (ref == 0) {
+ IWICStream_Release(This->stream);
+ UnmapViewOfFile(This->mem);
+ CloseHandle(This->map);
+ HeapFree(GetProcessHeap(), 0, This);
+ }
+ return ref;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Read(IStream *iface,
+ void *pv, ULONG cb, ULONG *pcbRead)
+{
+ StreamOnFileHandle *This = StreamOnFileHandle_from_IStream(iface);
+ TRACE("(%p)\n", This);
+
+ return IWICStream_Read(This->stream, pv, cb, pcbRead);
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Write(IStream *iface,
+ void const *pv, ULONG cb, ULONG *pcbWritten)
+{
+ ERR("(%p)\n", iface);
+ return HRESULT_FROM_WIN32(ERROR_ACCESS_DENIED);
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Seek(IStream *iface,
+ LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER *plibNewPosition)
+{
+ StreamOnFileHandle *This = StreamOnFileHandle_from_IStream(iface);
+ TRACE("(%p)\n", This);
+
+ return IWICStream_Seek(This->stream, dlibMove, dwOrigin, plibNewPosition);
+}
+
+static HRESULT WINAPI StreamOnFileHandle_SetSize(IStream *iface,
+ ULARGE_INTEGER libNewSize)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_CopyTo(IStream *iface,
+ IStream *pstm, ULARGE_INTEGER cb, ULARGE_INTEGER *pcbRead, ULARGE_INTEGER *pcbWritten)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Commit(IStream *iface,
+ DWORD grfCommitFlags)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Revert(IStream *iface)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_LockRegion(IStream *iface,
+ ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_UnlockRegion(IStream *iface,
+ ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Stat(IStream *iface,
+ STATSTG *pstatstg, DWORD grfStatFlag)
+{
+ StreamOnFileHandle *This = StreamOnFileHandle_from_IStream(iface);
+ TRACE("(%p)\n", This);
+
+ return IWICStream_Stat(This->stream, pstatstg, grfStatFlag);
+}
+
+static HRESULT WINAPI StreamOnFileHandle_Clone(IStream *iface,
+ IStream **ppstm)
+{
+ TRACE("(%p)\n", iface);
+ return E_NOTIMPL;
+}
+
+
+static const IStreamVtbl StreamOnFileHandle_Vtbl =
+{
+ /*** IUnknown methods ***/
+ StreamOnFileHandle_QueryInterface,
+ StreamOnFileHandle_AddRef,
+ StreamOnFileHandle_Release,
+ /*** ISequentialStream methods ***/
+ StreamOnFileHandle_Read,
+ StreamOnFileHandle_Write,
+ /*** IStream methods ***/
+ StreamOnFileHandle_Seek,
+ StreamOnFileHandle_SetSize,
+ StreamOnFileHandle_CopyTo,
+ StreamOnFileHandle_Commit,
+ StreamOnFileHandle_Revert,
+ StreamOnFileHandle_LockRegion,
+ StreamOnFileHandle_UnlockRegion,
+ StreamOnFileHandle_Stat,
+ StreamOnFileHandle_Clone,
+};
+
+/******************************************
* StreamOnStreamRange implementation
*
* Used by IWICStream_InitializeFromIStreamRegion
@@ -825,6 +994,76 @@ static HRESULT WINAPI IWICStreamImpl_InitializeFromMemory(IWICStream *iface,
return S_OK;
}
+static HRESULT map_file(HANDLE file, HANDLE *map, void **mem, LARGE_INTEGER *size)
+{
+ *map = NULL;
+ if (!GetFileSizeEx(file, size)) return HRESULT_FROM_WIN32(GetLastError());
+ if (size->u.HighPart)
+ {
+ WARN("file too large\n");
+ return E_FAIL;
+ }
+ if (!(*map = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, size->u.LowPart, NULL)))
+ {
+ return HRESULT_FROM_WIN32(GetLastError());
+ }
+ if (!(*mem = MapViewOfFile(*map, FILE_MAP_READ, 0, 0, size->u.LowPart)))
+ {
+ CloseHandle(*map);
+ return HRESULT_FROM_WIN32(GetLastError());
+ }
+ return S_OK;
+}
+
+HRESULT stream_initialize_from_filehandle(IWICStream *iface, HANDLE file)
+{
+ IWICStreamImpl *This = impl_from_IWICStream(iface);
+ StreamOnFileHandle *pObject;
+ IWICStream *stream = NULL;
+ HANDLE map;
+ void *mem;
+ LARGE_INTEGER size;
+ HRESULT hr;
+ TRACE("(%p,%p)\n", iface, file);
+
+ if (This->pStream) return WINCODEC_ERR_WRONGSTATE;
+
+ hr = map_file(file, &map, &mem, &size);
+ if (FAILED(hr)) return hr;
+
+ hr = StreamImpl_Create(&stream);
+ if (FAILED(hr)) goto error;
+
+ hr = IWICStreamImpl_InitializeFromMemory(stream, mem, size.u.LowPart);
+ if (FAILED(hr)) goto error;
+
+ pObject = HeapAlloc(GetProcessHeap(), 0, sizeof(StreamOnFileHandle));
+ if (!pObject)
+ {
+ hr = E_OUTOFMEMORY;
+ goto error;
+ }
+ pObject->IStream_iface.lpVtbl = &StreamOnFileHandle_Vtbl;
+ pObject->ref = 1;
+ pObject->map = map;
+ pObject->mem = mem;
+ pObject->stream = stream;
+
+ if (InterlockedCompareExchangePointer((void**)&This->pStream, pObject, NULL))
+ {
+ /* Some other thread set the stream first. */
+ IStream_Release(&pObject->IStream_iface);
+ return WINCODEC_ERR_WRONGSTATE;
+ }
+ return S_OK;
+
+error:
+ if (stream) IWICStream_Release(stream);
+ UnmapViewOfFile(mem);
+ CloseHandle(map);
+ return hr;
+}
+
static HRESULT WINAPI IWICStreamImpl_InitializeFromIStreamRegion(IWICStream *iface,
IStream *pIStream, ULARGE_INTEGER ulOffset, ULARGE_INTEGER ulMaxSize)
{
diff --git a/dlls/windowscodecs/wincodecs_private.h b/dlls/windowscodecs/wincodecs_private.h
index 8eae4a7..dddb327 100644
--- a/dlls/windowscodecs/wincodecs_private.h
+++ b/dlls/windowscodecs/wincodecs_private.h
@@ -105,4 +105,6 @@ extern HRESULT GCEReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **
extern HRESULT APEReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv) DECLSPEC_HIDDEN;
extern HRESULT GifCommentReader_CreateInstance(IUnknown *pUnkOuter, REFIID iid, void **ppv) DECLSPEC_HIDDEN;
+extern HRESULT stream_initialize_from_filehandle(IWICStream *iface, HANDLE hfile) DECLSPEC_HIDDEN;
+
#endif /* WINCODECS_PRIVATE_H */
--
1.7.10.4
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