Represents a block of memory that contains media data. Use this interface to access the data in the buffer.
The IMFMediaBuffer interface has these methods.
|IMFMediaBuffer::GetCurrentLength||Retrieves the length of the valid data in the buffer.|
|IMFMediaBuffer::GetMaxLength||Retrieves the allocated size of the buffer.|
|IMFMediaBuffer::Lock||Gives the caller access to the memory in the buffer, for reading or writing.|
|IMFMediaBuffer::SetCurrentLength||Sets the length of the valid data in the buffer.|
|IMFMediaBuffer::Unlock||Unlocks a buffer that was previously locked. Call this method once for every call to IMFMediaBuffer::Lock.|
If the buffer contains 2-D image data (such as an uncompressed video frame), you should query the buffer for the IMF2DBuffer interface. The methods on IMF2DBuffer are optimized for 2-D data.
To get a buffer from a media sample, call one of the following IMFSample methods:
|MFCreateMemoryBuffer||Creates a buffer and allocates system memory.|
|MFCreateMediaBufferWrapper||Creates a media buffer that wraps an existing media buffer.|
|MFCreateDXSurfaceBuffer||Creates a buffer that manages a DirectX surface.|
|MFCreateAlignedMemoryBuffer||Creates a buffer and allocates system memory with a specified alignment.|
This interface is available on the following platforms if the Windows Media Format 11 SDK redistributable components are installed:
- Windows XP with Service Pack 2 (SP2) and later.
- Windows XP Media Center Edition 2005 with KB900325 (Windows XP Media Center Edition 2005) and KB925766 (October 2006 Update Rollup for Windows XP Media Center Edition) installed.
|Minimum supported client||Windows Vista [desktop apps | UWP apps]|
|Minimum supported server||Windows Server 2008 [desktop apps | UWP apps]|
|Header||mfobjects.h (include Mfidl.h)|