fsfw/datalinklayer/MapPacketExtractionIF.h

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2020-08-18 13:09:15 +02:00
/**
* @file MapPacketExtractionIF.h
* @brief This file defines the MapPacketExtractionIF class.
* @date 25.03.2013
* @author baetz
*/
#ifndef MAPPACKETEXTRACTIONIF_H_
#define MAPPACKETEXTRACTIONIF_H_
#include "../datalinklayer/CCSDSReturnValuesIF.h"
#include "../datalinklayer/TcTransferFrame.h"
/**
* This is the interface for MAP Packet Extraction classes.
* All classes implementing this interface shall be able to extract blocked or segmented Space
* Packets on a certain MAP channel. This is done in accordance with the CCSDS TC Space Data Link
* Protocol.
*/
class MapPacketExtractionIF : public CCSDSReturnValuesIF {
protected:
static const uint8_t FIRST_PORTION = 0b01; //!< Identification of the first part of a segmented Packet.
static const uint8_t CONTINUING_PORTION = 0b00; //!< Identification of a continuing part of segmented Packets.
static const uint8_t LAST_PORTION = 0b10; //!< The last portion of a segmented Packet.
static const uint8_t NO_SEGMENTATION = 0b11; //!< A Frame without segmentation but maybe with blocking.
public:
/**
* Empty virtual destructor.
*/
virtual ~MapPacketExtractionIF() {
}
/**
* Method to call to handle a single Transfer Frame.
* The method tries to extract Packets from the frame as stated in the Standard.
* @param frame
* @return
*/
virtual ReturnValue_t extractPackets( TcTransferFrame* frame ) = 0;
/**
* Any post-instantiation initialization shall be done in this method.
* @return
*/
virtual ReturnValue_t initialize() = 0;
};
#endif /* MAPPACKETEXTRACTIONIF_H_ */