IMediaObjectInPlace Interface
The IMediaObjectInPlace interface provides methods for processing data in place. A Microsoft DirectX Media Object (DMO) can expose this interface if it meets the following conditions:
- It has one input stream and one output stream.
- Both streams use the same media type.
- The output is produced in place on the buffer; that is, without copying data.
This interface provides an optimized way to process data. The application calls a single IMediaObjectInPlace::Process method instead of the IMediaObject::ProcessInput and IMediaObject::ProcessOutput methods. However, any DMO that implements this interface must also implement the IMediaObject interface. Therefore, an application is never obligated to use this interface, and a DMO is never guaranteed to implement it.
In addition to the methods inherited from IUnknown, the IMediaObjectInPlace interface exposes the following methods.
| Method | Description |
| Clone | Creates a copy of the DMO in its current state. |
| GetLatency | Retrieves the latency introduced by this DMO. |
| Process | Processes a block of data. |
Requirements
Header: Declared in Mediaobj.h; include Dmo.h
Library: Dmoguids.lib.