IFileSourceFilter::Load (Windows Embedded CE 6.0)
1/6/2010
This method loads a media file.
Syntax
HRESULT Load(
LPCOLESTR pszFileName,
const AM_MEDIA_TYPE* pmt
);
Parameters
- pszFileName
[in] Absolute path of the file to open.
- pmt
[in] Media type of the file. This can be NULL.
Return Value
Returns an HRESULT value that depends on the implementation.
HRESULT can be one of the following standard constants or other values not listed.
| Value | Description |
|---|---|
E_FAIL |
Failure. |
E_POINTER |
Null pointer argument. |
E_INVALIDARG |
Invalid argument. |
E_NOTIMPL |
Method is not supported. |
S_OK or NOERROR |
Success. |
Remarks
This is an initialization method for the interface. It is not designed to load multiple files, and calls to this method after the first call fail.
Implement this method to load the file specified by pszFileName.
The name in pszFileName need not be a disk file name (that is, one you could pass to the Win32 CreateFile function, for example). It could also be a URL name. The URL moniker filter uses IFileSourceFilter to retrieve its URL name, and IGraphBuilder::AddSourceFilter (and hence IGraphBuilder::RenderFile) handles this correctly.
IGraphBuilder::AddSourceFilter returns a specific error (ERROR_FILE_NOT_FOUND) upon not finding the file, which indicates that the file specified does not exist, not that the filter does not exist.
Requirements
| Windows Embedded CE | Windows CE 2.12 and later |
| Note | Microsoft DirectShow applications and DirectShow filters have different include file and Library requirements For more information, see Setting Up the Build Environment, Version 2.12 requires DXPAK 1.0 or later |