DataMapEncodeBuffer

Syntax

unsigned char *DataMapEncodeBuffer(struct DataMap *ptr,int *size);

Header

general/dmap.h

Library

dmap

Description

The DataMapEncodeBuffer function encodes a DataMap data structure into a memory buffer.

The data structure is pointed to by the argument ptr.

The structure is encoded and stored in a memory buffer, the size of this memory buffer is stored at the location pointed to by the argument size.

Returns

Returns a pointer to the memory buffer on success. On error, a NULL pointer is returned.

Errors

On error, a NULL pointer is returned.

Example

Source Code: DataMapEncodeBuffer.c

/* DataMapEncodeBuffer.c
   =====================
   Author: R.J.Barnes
 Copyright (c) 2012 The Johns Hopkins University/Applied Physics Laboratory

This file is part of the Radar Software Toolkit (RST).

RST is free software: you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.

Modifications:

*/


#include <stdio.h>
#include <stdlib.h>

#include "rtypes.h"
#include "dmap.h"



int main(int argc,char *argv[]) {

  int t,n;
  unsigned char *buffer=NULL;
  int size;

  float set[3]={0.1,0.2,10.2};
  int value;

  int32 dim=1;
  int32 rng[1]={3};

  struct DataMap *dmap;

  dmap=DataMapMake();

  DataMapAddArray(dmap,"set",DATAFLOAT,dim,rng,&set);
  DataMapAddScalar(dmap,"value",DATAINT,&value);

  for (t=0;t<100;t++) {
    for (n=0;n<3;n++) set[n]=set[n]+0.1;
    buffer=DataMapEncodeBuffer(dmap,&size);
    fprintf(stderr,"Buffer size=%d'n",size);

  }
  DataMapFree(dmap);
  return 0;

}