fit_decoder

/////////////////////////////////////////////////////////////////////////////////////////////

// Copyright 2025 Garmin International, Inc.

// Licensed under the Flexible and Interoperable Data Transfer (FIT) Protocol License; you

// may not use this file except in compliance with the Flexible and Interoperable Data

// Transfer (FIT) Protocol License.

/////////////////////////////////////////////////////////////////////////////////////////////

// ****WARNING****  This file is auto-generated!  Do NOT edit this file.

// Profile Version = 21.171.0Release

// Tag = production/release/21.171.0-0-g57fed75

/////////////////////////////////////////////////////////////////////////////////////////////



#include "fit_buffer_encode.hpp"
#include "fit_crc.hpp"

namespace fit
{

BufferEncode::BufferEncode(void)
{
   this->Open();
}

void BufferEncode::Open()
{
   stringWriter.str(std::string(""));
   stringWriter.clear();
   dataSize = 0;

   for (FIT_UINT8 i = 0; i < FIT_MAX_LOCAL_MESGS; ++i)
   {
      lastMesgDefinition[i].SetNum(FIT_MESG_NUM_INVALID);
      lastMesgDefinition[i].SetLocalNum(i);
      lastMesgDefinition[i].ClearFields();
   }
}

void BufferEncode::Write(const MesgDefinition& mesgDef)
{
   dataSize += mesgDef.Write(stringWriter);
   lastMesgDefinition[mesgDef.GetLocalNum()] = mesgDef;
}

void BufferEncode::Write(const Mesg& mesg)
{
   MesgDefinition mesgDefinition(mesg);

   if (!lastMesgDefinition[mesg.GetLocalNum()].Supports(mesgDefinition))
      Write(mesgDefinition);

   dataSize += mesg.Write(stringWriter, &(lastMesgDefinition[mesg.GetLocalNum()]));
}

void BufferEncode::Write(const std::vector<Mesg>& mesgs)
{
   for (std::vector<Mesg>::size_type i = 0; i < mesgs.size(); i++)
      Write(mesgs[i]);
}

std::string BufferEncode::Close(void)
{
   FIT_FILE_HDR file_header;

   // Get the data.

   std::string dataString = stringWriter.str();

   // Write the header.

   stringWriter.str(std::string(""));
   stringWriter.clear();
   file_header.header_size = FIT_FILE_HDR_SIZE;
   file_header.profile_version = FIT_PROFILE_VERSION;
   file_header.protocol_version = FIT_PROTOCOL_VERSION;
   memcpy((FIT_UINT8 *)&file_header.data_type, ".FIT", 4);
   file_header.data_size = dataSize;
   file_header.crc = CRC::Calc16(&file_header, FIT_STRUCT_OFFSET(crc, FIT_FILE_HDR));
   stringWriter.write((const char *)&file_header, FIT_FILE_HDR_SIZE);

   std::string headerString = stringWriter.str();

   // Write the CRC.

   stringWriter.str(std::string(""));
   stringWriter.clear();

   FIT_UINT16 crc = 0;

   for (std::string::size_type i = 0; i < headerString.size(); i++)
      crc = CRC::Get16(crc, (int) headerString[i]);

   for (std::string::size_type i = 0; i < dataString.size(); i++)
      crc = CRC::Get16(crc, (int) dataString[i]);

   stringWriter.put(crc & 0xFF);
   stringWriter.put((char)(crc >> 8));

   std::string crcString = stringWriter.str();

   // Discard the output stream and re-initialize.

   Open();

   // Put the result together.

   return (headerString + dataString + crcString);
}

void BufferEncode::OnMesg(Mesg &mesg)
{
   Write(mesg);
}

void BufferEncode::OnMesgDefinition(MesgDefinition& mesgDef)
{
   Write(mesgDef);
}

} // namespace fit