IMediaDet::EnterBitmapGrabMode method
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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.]
Note
[Deprecated. This API may be removed from future releases of Windows.]
The EnterBitmapGrabMode method switches the media detector to bitmap grab mode and seeks the filter graph to a specified time.
Syntax
HRESULT EnterBitmapGrabMode(
double StreamTime
);
Parameters
-
StreamTime
-
Time, in seconds, to which the graph seeks.
Return value
Returns an HRESULT value. Possible values include the following:
| Return code | Description |
|---|---|
|
Success. |
|
Invalid argument. |
|
The source file does not have a video stream. |
|
Seek command timed out. |
Remarks
Before calling this method, set the file name and stream by calling IMediaDet::put_Filename and IMediaDet::put_CurrentStream.
This method inserts the Sample Grabber filter into the filter graph. You can then call IMediaDet::GetSampleGrabber to obtain a pointer to the ISampleGrabber interface. Once the media detector enters bitmap grab mode, the various informational methods in IMediaDet do not work.
The IMediaDet::GetBitmapBits or IMediaDet::WriteBitmapBits methods also put the media detector into bitmap grab mode.
Note
The header file Qedit.h is not compatible with Direct3D headers later than version 7.
Note
To obtain Qedit.h, download the Microsoft Windows SDK Update for Windows Vista and .NET Framework 3.0. Qedit.h is not available in the Microsoft Windows SDK for Windows 7 and .NET Framework 3.5 Service Pack 1.
Requirements
| Requirement | Value |
|---|---|
| Header |
|
| Library |
|
See also