42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
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#ifndef MD_TELEMETRY
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#define MD_TELEMETRY
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#define MAX_FRAMESIZE 100 // Capacity if data elements of both kinds.
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#define nameOffsetIdx (frame + (sizeof(unsigned short) * (1 + *nNames)))
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class mdAPIFrame {
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public:
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char *frame,*frameData,*nameCursor;
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int frameSize,i,nameOffset;
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unsigned short *nameOffsets,*nNames;
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std::string manifest[MAX_FRAMESIZE];
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mdAPIFrame(const char *buffer,int size) : frameSize(size)
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{frame = (char *)buffer;
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frameData = frame + frameSize;
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nNames = (unsigned short *)frame;
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nameOffsets = ((unsigned short *)frame) + 1;
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nameCursor = frame + ((MAX_FRAMESIZE + 1) * sizeof(unsigned short));
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nameOffsets[0] = nameCursor - frame;
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nameOffset = 0;
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}
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char *nameIdx(int j) {return frame + ((MAX_FRAMESIZE+1) * sizeof(unsigned short)) + nameOffsets[j];}
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void newOut() { memset(frame,0,frameSize); }
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void newIn() { for (i=0;i< *nNames;i++) manifest[i] = std::string(nameIdx(i)); }
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void pack(mdOperationalDataElement *ode, std::string &next) {
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frameData -= ode->pack(frameData);
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strcpy(nameCursor,next.c_str());
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*((unsigned short *)nameOffsetIdx) = nameOffset;
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nameOffset += (unsigned short)next.length() + 1;
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*nNames++;
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}
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};
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#endif
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