ValidateBitmapInfoHeader function
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The ValidateBitmapInfoHeader function checks a BITMAPINFOHEADER structure for certain common errors that can cause buffer overruns or integer overflows.
Note
This function does not guarantee that the BITMAPINFOHEADER structure is valid or that code using the structure is secure.
Syntax
BOOL ValidateBitmapInfoHeader(
const BITMAPINFOHEADER *pbmi,
DWORD cbSize
);
Parameters
-
pbmi
-
Pointer to the BITMAPINFOHEADER structure to validate.
-
cbSize
-
Size of the memory block that holds the structure, in bytes.
Return value
Returns a Boolean value. If the value is FALSE, the BITMAPINFOHEADER structure is not valid.
Remarks
This function guards against the following errors:
- Arithmetic overflow in the structure size or an invalid structure size.
- Invalid value for the biClrUsed member.
- Arithmetic overflow in the image size (biSizeImage).
- Invalid values for the image size (biSizeImage) for RGB formats.
The function does not check whether the structure describes a valid video format.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
See also