IMediaBuffer interface (mediaobj.h)
[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 It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation.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 IMediaBuffer interface provides methods for manipulating a data buffer. Buffers passed to the IMediaObject::ProcessInput and ProcessOutput methods must implement this interface.
Inheritance
The IMediaBuffer interface inherits from the IUnknown interface. IMediaBuffer also has these types of members:
Methods
The IMediaBuffer interface has these methods.
| IMediaBuffer::GetBufferAndLength The GetBufferAndLength method retrieves the buffer and the size of the valid data in the buffer. |
| IMediaBuffer::GetMaxLength The GetMaxLength method retrieves the maximum number of bytes this buffer can hold. |
| IMediaBuffer::SetLength The SetLength method specifies the length of the data currently in the buffer. |
Requirements
| Requirement | Value |
|---|---|
| Target Platform | Windows |
| Header | mediaobj.h (include Dmo.h) |