The BMediaEncoder class is a base class from which encoder classes may be derived. It handles all the work of locating an appropriate encoder add-on and interfacing with it. All you have to do is implement the and AddTrackInfo() functions to write a chunk of encoded data to the destination and to write information about the track into the file.

The BMediaBufferEncoder class is provided for you; it's a derived class that implements WriteChunk() to write encoded data into a memory buffer.

An application that wants to encode a stream of data that's not originating from a file should use a subclass of BMediaEncoder (such as BMediaBufferEncoder) to do so.

The BMediaDecoder class is a base class from which decoder classes may be derived. It handles all the work of locating an appropriate decoder add-on and interfacing with it. All you have to do is implement the GetNextChunk() function to fetch the next chunk of encoded data to be processed.

The BMediaBufferDecoder class is provided for you; it's a derived class that implements GetNextChunk() to return data from a memory buffer.

An application that wants to decode a stream of data that's not originating from a file should use a subclass of BMediaDecoder (such as BMediaBufferDecoder) to do so.