IGetFrame::SetFormat method (vfw.h)
The SetFormat method sets the decompressed image format of the frames being extracted and optionally provides a buffer for the decompression operation.
Syntax
HRESULT SetFormat(
LPBITMAPINFOHEADER lpbi,
LPVOID lpBits,
int x,
int y,
int dx,
int dy
);
Parameters
lpbi
Pointer to a BITMAPINFOHEADER structure defining the decompressed image format. You can also specify NULL or the value ((LPBITMAPINFOHEADER) 1) for this parameter. NULL causes the decompressor to choose a format that is appropriate for editing (normally a 24-bit image depth format). The value ((LPBITMAPINFOHEADER) 1) causes the decompressor to choose a format appropriate for the current display mode.
lpBits
Pointer to a buffer to contain the decompressed image data. Specify NULL to have this method allocate a buffer.
x
The x-coordinate of the destination rectangle within the DIB specified by lpbi. This parameter is used when lpBits is not NULL.
y
The y-coordinate of the destination rectangle within the DIB specified by lpbi. This parameter is used when lpBits is not NULL.
dx
Width of the destination rectangle. This parameter is used when lpBits is not NULL.
dy
Height of the destination rectangle. This parameter is used when lpBits is not NULL.
Return value
Returns NOERROR if successful, E_OUTOFMEMORY if the decompressed image is larger than the buffer size, or E_FAIL otherwise.
Remarks
The x, y, dx, and dy parameters identify the portion of the bitmap specified by lpbi and lpBits that receives the decompressed image.
For handlers written in C++, SetFormat has the following syntax:
HRESULT SetFormat(LPBITMAPINFOHEADER lpbi, LPVOID lpBits, int x,
int y, int dx, int dy);
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only] |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | vfw.h |
| Library | Vfw32.lib |