/**
* AP_EventEncoder
*
* External (client-visible) interface to the encoder part of a codec
* plugin library. The AP_EventEncoder struct contains a table of
* function pointers, declared in the AP_EventEncoder_Functions struct
* above. The implementation of these functions is private. Users of
* the encoder should invokefunctions on it as in the following example
* (encoder is of type AP_EventEncoder*):
*
* i = encoder->functions->sendNormalisedEvent(encoder, event, timestamps);
*/
struct AP_EventEncoder {
/**
* Pointer to private internal data.
*/
  void* reserved;
/**
* Function table of encoder operations. See documentation for
* AP_EventEncoder_Functions for details.
*/
  struct AP_EventEncoder_Functions* functions;
};
/**
* AP_EventDecoder
*
* External (client-visible) interface to the decoder part of a codec
* plugin library. The AP_EventDecoder struct contains a table of
* function pointers, declared in the AP_EventEDecoder_Functions struct
* above. The implementation of these functions is private. Users of the
* decoder should invoke functions on it as in the following example (
* decoder is of type AP_EventDecoder*):
*
* i = decoder->functions->sendTransportEvent(decoder, event, timestamps);
*/
struct AP_EventDecoder {
/**
* Pointer to private internal data.
*/
  void* reserved;
/**
* Function table of decoder operations. See documentation for
* AP_EventDecoder_Functions for details.
*/
  struct AP_EventDecoder_Functions* functions;
};
/**
* AP_EventCodec
*
* External (client-visible) interface to an IAF codec plug-in library. The
* AP_EventCodec struct contains pointers to the encoder and decoder parts
* of the codec (either of these may be NULL if the codec operates in one
* direction only) and a table of function pointers, declared in the
* AP_EventCodec_Functions struct above. The implementation of these
* functions is private. Users of the codec should invoke functions on it
* as in the following example (codec is of type AP_EventCodec*):
*
* i = codec->functions->updateProperties(codec, properties, timestampConfig);
*/
struct AP_EventCodec {
/**
* Pointer to private internal data.
*/
  void* reserved;
/**
* Function table of codec operations. See documentation for
* AP_EventCodec_Functions for details.
*/
  struct AP_EventCodec_Functions* functions;
/**
* Pointer to embedded encoder.
*/
  AP_EventEncoder* encoder;
/**
* Pointer to embedded decoder.
*/
  AP_EventDecoder* decoder;
};