DataPacket.cpp

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// ======================================================================
// \title  DataPacket.cpp
// \author bocchino
// \brief  cpp file for FilePacket::DataPacket
//
// \copyright
// Copyright 2009-2016, by the California Institute of Technology.
// ALL RIGHTS RESERVED.  United States Government Sponsorship
// acknowledged.
//
// ======================================================================
 
#include <Fw/FilePacket/FilePacket.hpp>
#include <Fw/Types/Assert.hpp>
 
namespace Fw {
 
  void FilePacket::DataPacket ::
    initialize(
        const U32 sequenceIndex,
        const U32 byteOffset,
        const U16 dataSize,
        const U8 *const data
    )
  {
    this->header.initialize(FilePacket::T_DATA, sequenceIndex);
    this->byteOffset = byteOffset;
    this->dataSize = dataSize;
    this->data = data;
  }
 
  U32 FilePacket::DataPacket ::
    bufferSize() const
  {
    return
      this->header.bufferSize() +
      sizeof(this->byteOffset) +
      sizeof(this->dataSize) +
      this->dataSize;
  }
 
  SerializeStatus FilePacket::DataPacket ::
    toBuffer(Buffer& buffer) const
  {
    SerialBuffer serialBuffer(
        buffer.getData(),
        buffer.getSize()
    );
    return this->toSerialBuffer(serialBuffer);
  }
 
  SerializeStatus FilePacket::DataPacket ::
    fromSerialBuffer(SerialBuffer& serialBuffer)
  {
 
    FW_ASSERT(this->header.type == T_DATA);
 
    SerializeStatus status = serialBuffer.deserialize(this->byteOffset);
    if (status != FW_SERIALIZE_OK)
      return status;
 
    status = serialBuffer.deserialize(this->dataSize);
    if (status != FW_SERIALIZE_OK)
      return status;
 
    if (serialBuffer.getBuffLeft() != this->dataSize)
      return FW_DESERIALIZE_SIZE_MISMATCH;
 
    U8 *const addr = serialBuffer.getBuffAddr();
    this->data = &addr[this->fixedLengthSize()];
 
    return FW_SERIALIZE_OK;
 
  }
 
  U32 FilePacket::DataPacket ::
    fixedLengthSize() const
  {
    return
      this->header.bufferSize() +
      sizeof(this->byteOffset) +
      sizeof(this->dataSize);
  }
 
  SerializeStatus FilePacket::DataPacket ::
    toSerialBuffer(SerialBuffer& serialBuffer) const
  {
 
    FW_ASSERT(this->header.type == T_DATA);
 
    SerializeStatus status;
 
    status = this->header.toSerialBuffer(serialBuffer);
    if (status != FW_SERIALIZE_OK)
      return status;
 
    status = serialBuffer.serialize(this->byteOffset);
    if (status != FW_SERIALIZE_OK)
      return status;
 
    status = serialBuffer.serialize(this->dataSize);
    if (status != FW_SERIALIZE_OK)
      return status;
 
    status = serialBuffer.pushBytes(this->data, dataSize);
 
    return status;
 
  }
 
}