72 lines
2.9 KiB
C++
Executable File
72 lines
2.9 KiB
C++
Executable File
/*********************************************************************
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*
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* AUTHORIZATION TO USE AND DISTRIBUTE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that:
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*
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* (1) source code distributions retain this paragraph in its entirety,
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*
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* (2) distributions including binary code include this paragraph in
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* its entirety in the documentation or other materials provided
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* with the distribution, and
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*
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* (3) all advertising materials mentioning features or use of this
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* software display the following acknowledgment:
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*
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* "This product includes software written and developed
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* by Brian Adamson and Joe Macker of the Naval Research
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* Laboratory (NRL)."
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*
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* The name of NRL, the name(s) of NRL employee(s), or any entity
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* of the United States Government may not be used to endorse or
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* promote products derived from this software, nor does the
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* inclusion of the NRL written and developed software directly or
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* indirectly suggest NRL or United States Government endorsement
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* of this product.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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********************************************************************/
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#ifndef _NORM_ENCODER
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#define _NORM_ENCODER
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#include "protokit.h" // protolib stuff
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class NormTelemetryContext
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{
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public:
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virtual ~NormTelemetryContext() {}
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virtual double GetGrtt() const = 0;
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virtual double GetTxRate() const = 0;
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virtual unsigned int GetGroupSize() const = 0;
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virtual double GetCurrentTime() const = 0;
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};
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class NormEncoder
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{
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public:
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virtual ~NormEncoder();
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virtual bool Init(unsigned int numData, unsigned int numParity, UINT16 vectorSize) = 0;
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virtual void Destroy() = 0;
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virtual void Encode(unsigned int segmentId, const char *dataVector, char **parityVectorList) = 0;
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virtual void EncodeParity(unsigned int parityId, char* parityVector) { (void)parityId; (void)parityVector; }
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virtual bool IsRateless() const { return false; }
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virtual UINT16 CalculateProactiveParity(unsigned int blockId, UINT16 numData, const NormTelemetryContext& context) { return 0; }
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virtual UINT16 CalculateReactiveParity(unsigned int blockId, UINT16 requestedErasures, const NormTelemetryContext& context) { return requestedErasures; }
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}; // end class NormEncoder
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class NormDecoder
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{
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public:
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virtual ~NormDecoder();
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virtual bool Init(unsigned int numData, unsigned int numParity, UINT16 vectorSize) = 0;
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virtual void Destroy() = 0;
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virtual int Decode(char** vectorList, unsigned int numData, unsigned int erasureCount, unsigned int* erasureLocs) = 0;
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}; // end class NormDecoder
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#endif // _NORM_ENCODER
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