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 * License, included below. This software may be subject to other third party
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 * All rights reserved.
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 *    this list of conditions and the following disclaimer.
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 *    this list of conditions and the following disclaimer in the documentation
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/** \file     SEIRemovalAppCfg.cpp
    \brief    Decoder configuration class
*/

#include <cstdio>
#include <cstring>
#include <string>
#include "SEIRemovalAppCfg.h"
#include "Utilities/program_options_lite.h"

namespace po = df::program_options_lite;

//! \ingroup DecoderApp
//! \{

// ====================================================================================================================
// Public member functions
// ====================================================================================================================

/** \param argc number of arguments
    \param argv array of arguments
 */
bool SEIRemovalAppCfg::parseCfg( int argc, char* argv[] )
{
  bool do_help = false;
  int warnUnknowParameter = 0;
  po::Options opts;

  // clang-format off
  opts.addOptions()
  ("help",                      do_help,                               false,      "this help text")
  ("BitstreamFileIn,b",         m_bitstreamFileNameIn,                 std::string(""), "bitstream input file name")
  ("BitstreamFileOut,o",        m_bitstreamFileNameOut,                std::string(""), "bitstream output file name")
  ("DiscardPrefixSEI,p",        m_discardPrefixSEIs,                   false,      "remove all prefix SEIs (default: 0)")
  ("DiscardSuffixSEI,s",        m_discardSuffixSEIs,                   true,       "remove all suffix SEIs (default: 1)")
  ("NumSkip",                   m_numNALUnitsToSkip,                   0,          "number of NAL units to skip (counted inclusive the units skipped with -p/-s options)" )
  ("NumWrite",                  m_numNALUnitsToWrite,                  -1,         "number of NAL units to write (counted inclusive the units skipped with -p/-s/--NumSkip options), -1 to disable" )

  ("WarnUnknowParameter,w",     warnUnknowParameter,                   0,          "warn for unknown configuration parameters instead of failing")
  ;
  // clang-format on

  po::setDefaults(opts);
  po::ErrorReporter err;
  const std::list<const char *> &argv_unhandled = po::scanArgv(opts, argc, (const char **) argv, err);

  for (std::list<const char *>::const_iterator it = argv_unhandled.begin(); it != argv_unhandled.end(); it++)
  {
    std::cerr << "Unhandled argument ignored: "<< *it << std::endl;
  }

  if (argc == 1 || do_help)
  {
    po::doHelp(std::cout, opts);
    return false;
  }

  if (err.is_errored)
  {
    if (!warnUnknowParameter)
    {
      /* errors have already been reported to stderr */
      return false;
    }
  }


  if (m_bitstreamFileNameIn.empty())
  {
    std::cerr << "No input file specified, aborting" << std::endl;
    return false;
  }
  if (m_bitstreamFileNameOut.empty())
  {
    std::cerr << "No output file specified, aborting" << std::endl;
    return false;
  }


  return true;
}

SEIRemovalAppCfg::SEIRemovalAppCfg()
: m_bitstreamFileNameIn()
, m_bitstreamFileNameOut()
, m_discardPrefixSEIs( false )
, m_discardSuffixSEIs( false )
{
}

SEIRemovalAppCfg::~SEIRemovalAppCfg()
{
}

//! \}