converter/nexus/NxMessageDecoder.cpp

   1 /*
   2  * Copyright (C) 2013 Freescale Semiconductor, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a copy
   5  * of this software and associated documentation files (the "Software"), to deal
   6  * in the Software without restriction, including without limitation the rights
   7  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   8  * copies of the Software, and to permit persons to whom the Software is
   9  * furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  17  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  19  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  20  * IN THE SOFTWARE.
  21  */
  22
  23 #include "NxMessageDecoder.h"
  24 #include "NxMessage.h"
  25 #include "AUXMessageProtocol.h"
  26 #include "NxPacketDecoder.h"
  27 #include "NxPacketSet.h"
  28 #include <iostream>
  29 using std::cout;
  30 using std::endl;
  31
  32 NxMessageDecoder::NxMessageDecoder() :
  33         verbose_(false)
  34 {
  35         protocol_ = new AUXMessageProtocol();
  36         packet_decoder_ = new NxPacketDecoder();
  37         packet_set_ = new NxPacketSet();
  38 }
  39
  40 NxMessageDecoder::~NxMessageDecoder()
  41 {
  42         delete protocol_;
  43         delete packet_decoder_;
  44         delete packet_set_;
  45 }
  46
  47 void NxMessageDecoder::verbose(bool verbose)
  48 {
  49         verbose_ = verbose;
  50         protocol_->verbose(verbose);
  51         packet_decoder_->verbose(verbose);
  52         packet_set_->verbose(verbose);
  53 }
  54
  55 // input data - the MDO/MSEO for each data beat
  56 // output msg - pointer will be set if NxMessage is available
  57 // return true if no error
  58 bool NxMessageDecoder::accept(uint32_t data, NxMessage* &msg)
  59 {
  60         AUXMessageProtocol::Outcome outcome;
  61         bool ret = protocol_->evaluate((data & 3), outcome);
  62         if (ret) {
  63                 ret = protocol_->act((data >> 2), *packet_set_);
  64                 if (ret) {
  65                         if (outcome == AUXMessageProtocol::ADD_LAST_MESSAGE) {
  66                                 // decode the NxPacketSet information into a NXMessage
  67                                 if (verbose_) {
  68                                         cout << "END OF MESSAGE - Starting Decode."
  69                                                 << endl;
  70                                 }
  71                                 ret = packet_decoder_->decode(*packet_set_,
  72                                         msg);
  73                         }
  74                 }
  75         }
  76
  77         return ret;
  78 }