/src/vvenc/source/Lib/apputils/IStreamIO.h

Source
/* -----------------------------------------------------------------------------
The copyright in this software is being made available under the Clear BSD
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other Intellectual Property Rights other than the copyrights concerning 
the Software are granted under this license.

The Clear BSD License

Copyright (c) 2019-2026, Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. & The VVenC Authors.
All rights reserved.

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     * Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.

     * Redistributions in binary form must reproduce the above copyright
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     documentation and/or other materials provided with the distribution.

     * Neither the name of the copyright holder nor the names of its
     contributors may be used to endorse or promote products derived from this
     software without specific prior written permission.

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THIS LICENSE. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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------------------------------------------------------------------------------------------- */
#pragma once

#include <iostream>
#include <sstream>
#include <string>
#include <list>
#include <map>
#include <vector>
#include <algorithm>
#include <cstdint>
#include <limits>

#include "VVEncAppCfg.h"
#include <vvenc/vvencCfg.h>

//! \ingroup Interface
//! \{

namespace apputils {

template<typename E>
struct SVPair
{
  const char* str;
  E           value;
};

// ====================================================================================================================
// string <-> vector
// ====================================================================================================================

template<typename T>
class IStreamToRefVec
{
  public:
    IStreamToRefVec( std::vector<T*> v, bool _allRequired, char _sep = 'x' )
      : valVec( v )
      , sep( _sep)
      , allRequired( _allRequired)
    {
    }

    ~IStreamToRefVec()
    {
    }

    template<typename F>
    friend std::istream& operator >> ( std::istream& in, IStreamToRefVec<F>& toVec );

    template<typename F>
    friend std::ostream& operator << ( std::ostream& os, const IStreamToRefVec<F>& toVec );

  private:
    std::vector<T*> valVec;
    char sep;
    bool allRequired;
};

template<typename T>
inline std::istream& operator >> ( std::istream& in, IStreamToRefVec<T>& toVec )
{
  const size_t maxSize = toVec.valVec.size();
  size_t idx = 0;
  bool fail = false;
  // split into multiple lines if any
  while ( ! in.eof() )
  {
    std::string line;
    std::getline( in, line );
    // treat all whitespaces and commas as valid separators
    if( toVec.sep == 'x')
      replace_if( line.begin(), line.end(), []( int c ){ return isspace( c ) || c == 'x'; }, ' ' );
    else if( toVec.sep == '/')
      replace_if( line.begin(), line.end(), []( int c ){ return isspace( c ) || c == '/'; }, ' ' );
    else
      replace_if( line.begin(), line.end(), []( int c ){ return isspace( c ) || c == ','; }, ' ' );
    std::stringstream tokenStream( line );
    std::string token;
    // split into multiple tokens if any
    while( std::getline( tokenStream, token, ' ' ) )
    {
      if ( ! token.length() )
        continue;
      // convert to value
      std::stringstream convStream( token );
      T val;
      convStream >> val;
      fail |= convStream.fail();
      if( idx >= maxSize )
      {
        fail = true;//try to write behind buffer
      }
      else
      {
        *toVec.valVec[idx++] =  val;
      }
    }
  }

  if ( fail || (toVec.allRequired && idx != maxSize) )
  {
    in.setstate( std::ios::failbit );
  }

  return in;
}

template<typename T>
inline std::ostream& operator << ( std::ostream& os, const IStreamToRefVec<T>& toVec )
{
  bool bfirst = true;
  for( auto& e: toVec.valVec )
  {
    if( bfirst )
    {
      bfirst = false;
    }
    else
    {
      os << toVec.sep;
    }
    os << *e;
  }
  return os;
}


// ====================================================================================================================
// string <-> enum
// ====================================================================================================================

template<typename E>
class IStreamToEnum
{
  public:
    IStreamToEnum( E* d, const std::vector<SVPair<E>>* m )
      : dstVal ( d )
        , toMap( m )
    {
    }

    ~IStreamToEnum()
    {
    }

    template<typename F>
    friend std::ostream& operator << ( std::ostream& os, const IStreamToEnum<F>& toEnum );

    template<typename F>
    friend std::istream& operator >> ( std::istream& in, IStreamToEnum<F>& toEnum );

  private:
    E*                            dstVal;
    const std::vector<SVPair<E>>* toMap;
};

template<typename E>
inline std::istream& operator >> ( std::istream& in, IStreamToEnum<E>& toEnum )
{
  std::string str;
  in >> str;

  for ( const auto& map : *toEnum.toMap )
  {
    if ( str == map.str )
    {
      *toEnum.dstVal = map.value;
      return in;
    }
  }

  /* not found */
  in.setstate( std::ios::failbit );
  return in;
}

template<typename E>
inline std::ostream& operator << ( std::ostream& os, const IStreamToEnum<E>& toEnum )
{
  for ( const auto& map : *toEnum.toMap )
  {
    if ( *toEnum.dstVal == map.value )
    {
      os << map.str;
      return os;
    }
  }

  /* not found */
  os.setstate( std::ios::failbit );
  return os;
}

// ====================================================================================================================
// string <-> int8_t
// ====================================================================================================================

class IStreamToInt8
{
  public:
    IStreamToInt8( int8_t * d )
      : dstVal ( d )
    {
    }

    ~IStreamToInt8()
    {
    }

    friend std::ostream& operator << ( std::ostream& os, const IStreamToInt8& toInt8 );

    friend std::istream& operator >> ( std::istream& in, IStreamToInt8& toInt8 );

  private:
    int8_t* dstVal;
};

inline std::istream& operator >> ( std::istream& in, IStreamToInt8& toInt8 )
{
  std::string str;
  in >> str;
  int ret = std::stoi( str );
  if( ret < std::numeric_limits<int8_t>::min() || ret > std::numeric_limits<int8_t>::max() )
  {
    in.setstate( std::ios::failbit );
  }
  *toInt8.dstVal = (int8_t)ret;
  return in;
}

inline std::ostream& operator << ( std::ostream& os, const IStreamToInt8& toInt8 )
{
  os << (int)(*toInt8.dstVal);
  return os;
}

// ====================================================================================================================
// string <-> function
// ====================================================================================================================

class VVEncAppCfg;
typedef void (*setParamFunc) (VVEncAppCfg*, vvenc_config*, int);

template<typename E>
class IStreamToFunc
{
  public:
    IStreamToFunc( setParamFunc func, VVEncAppCfg* appCfg, vvenc_config* encCfg, const std::vector<SVPair<E>>* m, const E _default )
      : mfunc( func )
      , mappCfg ( appCfg )
      , mencCfg( encCfg )
      , toMap( m )
      , dstVal( _default )
    {
    }

    ~IStreamToFunc()
    {
    }

    template<typename F>
    friend std::istream& operator >> ( std::istream& in, IStreamToFunc<F>& toEnum );

    template<typename F>
    friend std::ostream& operator << ( std::ostream& in, const IStreamToFunc<F>& toEnum );

  private:
    setParamFunc                  mfunc;
    VVEncAppCfg*                  mappCfg;
    vvenc_config*                 mencCfg;
    const std::vector<SVPair<E>>* toMap;
    E                             dstVal;
};

template<typename E>
inline std::istream& operator >> ( std::istream& in, IStreamToFunc<E>& toEnum )
{
  std::string str;
  in >> str;

  for ( const auto& map : *toEnum.toMap )
  {
    if ( str == map.str )
    {
      toEnum.dstVal = map.value;
      toEnum.mfunc( toEnum.mappCfg, toEnum.mencCfg, map.value);
      return in;
    }
  }

  /* not found */
  in.setstate( std::ios::failbit );
  return in;
}

template<typename F>
inline std::ostream& operator << ( std::ostream& os, const IStreamToFunc<F>& toEnum )
{
  for ( const auto& map : *toEnum.toMap )
  {
    if ( toEnum.dstVal == map.value )
    {
      os << map.str;
      return os;
    }
  }

  /* not found */
  os.setstate( std::ios::failbit );
  return os;
}

// ====================================================================================================================
// string -> list
// ====================================================================================================================

template<typename T>
class IStreamToVec
{
  public:
    IStreamToVec( std::vector<T>* v )
      : valVec( v )
    {
    }

    ~IStreamToVec()
    {
    }

    template<typename F>
    friend std::istream& operator >> ( std::istream& in, IStreamToVec<F>& toVec );

    template<typename F>
    friend std::ostream& operator << ( std::ostream& in, const IStreamToVec<F>& toVec );

  private:
    std::vector<T>* valVec;
};

template<typename T>
inline std::istream& operator >> ( std::istream& in, IStreamToVec<T>& toVec )
{
  std::vector<T>* valVec = toVec.valVec;
  valVec->clear();

  bool fail = false;
  // split into multiple lines if any
  while ( ! in.eof() )
  {
    std::string line;
    std::getline( in, line );

    if( line == "[]" || line == "empty"  )
    {
      return in;    // forcing empty entry
    }
    else
    {
      // treat all whitespaces and commas as valid separators
      replace_if( line.begin(), line.end(), []( int c ){ return isspace( c ) || c == ','; }, ' ' );
      std::stringstream tokenStream( line );
      std::string token;
      // split into multiple tokens if any
      while( std::getline( tokenStream, token, ' ' ) )
      {
        if ( ! token.length() )
          continue;
        // convert to value
        std::stringstream convStream( token );
        T val;
        convStream >> val;
        fail |= convStream.fail();
        valVec->push_back( val );
      }
    }
  }

  if ( fail || (! valVec->size() ) )
  {
    in.setstate( std::ios::failbit );
  }

  return in;
}

template<typename T>
inline std::ostream& operator << ( std::ostream& os, const IStreamToVec<T>& toVec )
{
  if( (*(toVec.valVec)).empty() )
  {
    os << "[]";
    return os;
  }

  bool bfirst = true;
  for( auto& e : (*(toVec.valVec)))
  {
    if( bfirst )
    {
      bfirst = false;
    }
    else
    {
      os << ",";
    }
    os << e;
  }

  return os;
}


// ====================================================================================================================
// string -> array
// ====================================================================================================================

template<typename T>
class IStreamToArr
{
  public:
    IStreamToArr( T* v, size_t maxSize )
    : _valVec        ( v )
    , _maxSize       ( maxSize )
    , _curSize       ( nullptr )
    {
    }

    IStreamToArr( T* v, size_t maxSize, int* curSize )
    : _valVec        ( v )
    , _maxSize       ( maxSize )
    , _curSize       ( curSize )
    {
    }

    ~IStreamToArr()
    {
    }

    template<typename F>
    friend std::istream& operator >> ( std::istream& in, IStreamToArr<F>& toArr );

    template<typename F>
    friend std::ostream& operator << ( std::ostream& in, const IStreamToArr<F>& toArr );

  private:
    T*     _valVec;
    size_t _maxSize;
    int*   _curSize;
};

template<typename T>
inline std::istream& operator >> ( std::istream& in, IStreamToArr<T>& toArr )
{
  for( size_t i = 0; i < toArr._maxSize; i++ ) memset(&toArr._valVec[i],0, sizeof(T));

  bool fail = false;
  size_t pos = 0;
  if ( toArr._curSize ) *toArr._curSize = 0;
  // split into multiple lines if any
  while ( ! in.eof() )
  {
    std::string line;
    std::getline( in, line );

    if( line == "[]" || line == "empty"  )
    {
      return in;    // forcing empty entry
    }
    else
    {
      // treat all whitespaces and commas as valid separators
      replace_if( line.begin(), line.end(), []( int c ){ return isspace( c ) || c == ','; }, ' ' );
      std::stringstream tokenStream( line );
      std::string token;
      // split into multiple tokens if any
      while( std::getline( tokenStream, token, ' ' ) )
      {
        if ( ! token.length() )
          continue;
        // convert to value
        std::stringstream convStream( token );
        T val;
        convStream >> val;
        fail |= convStream.fail();

        if ( pos < toArr._maxSize )
        {
          toArr._valVec[pos] = val;
        }
        pos++;
      }
    }
  }

  if ( fail || ( 0 == pos ) || (pos > toArr._maxSize) )
  {
    in.setstate( std::ios::failbit );
  }

  if ( toArr._curSize ) *toArr._curSize = static_cast<int>( std::min<size_t>( pos, toArr._maxSize ) );

  return in;
}

template<>
inline std::istream& operator >> ( std::istream& in, IStreamToArr<char>& toArr )
{
  for( size_t i = 0; i < toArr._maxSize; i++ ) memset(&toArr._valVec[i],0, sizeof(char));

  bool fail = false;
  size_t size = 0;
  // split into multiple lines if any
  while ( ! in.eof() )
  {
    std::string line;
    std::getline( in, line );

    if( line == "" || line == "\"\"" || line == "[]" || line == "empty" || line == "''"  )
    {
      return in;    // forcing empty entry
    }
    else
    {
      if( line.size() >= toArr._maxSize )
      {
        line.copy( toArr._valVec , toArr._maxSize-1 );
        toArr._valVec[toArr._maxSize-1] = '\0';
        fail = true;
      }
      else
      {
        line.copy( toArr._valVec , line.size()+1 );
        toArr._valVec[line.size()] = '\0';
        size = line.size();
      }
    }
  }

  if ( fail || ( 0 == size ) )
  {
    in.setstate( std::ios::failbit );
  }

  return in;
}

template<typename T>
inline std::ostream& operator << ( std::ostream& os, const IStreamToArr<T>& toArr )
{
  int size=0;
  for ( size_t i = 0; i < toArr._maxSize; i++ )
  {
    if( toArr._valVec[i] != 0 ) size++;
    else break;
  }

  if( 0 == size )
  {
    os << "[]";
    return os;
  }

  bool bfirst = true;
  for ( int i = 0; i < size; i++ )
  {
    if( bfirst )
    {
      bfirst = false;
    }
    else
    {
      os << ",";
    }
    os << toArr._valVec[i];
  }

  return os;
}

template<>
inline std::ostream& operator << ( std::ostream& os, const IStreamToArr<char>& toArr )
{
  int size=0;
  for ( size_t i = 0; i < toArr._maxSize; i++ )
  {
    if( toArr._valVec[i] != '\0' ) size++;
    else break;
  }

  if( 0 == size )
  {
    os << "''";
    return os;
  }

  for ( int i = 0; i < size; i++ )
  {
    os << toArr._valVec[i];
  }

  return os;
}


// ====================================================================================================================
// string -> abbreviated value
// ====================================================================================================================

// T: value type, A abbreviation value type
template<typename T, typename A>
class IStreamToAbbr
{
  public:
    IStreamToAbbr( T* v, const std::vector<SVPair<A>>* m  )
    : dstVal ( v )
    , toMap  ( m )      
    {
    }

    ~IStreamToAbbr()
    {
    }

    template<typename F, typename G>
    friend std::istream& operator >> ( std::istream& in, IStreamToAbbr<F,G>& toValue );

    template<typename F, typename G>
    friend std::ostream& operator << ( std::ostream& in, const IStreamToAbbr<F,G>& toValue );

  private:
    T*                            dstVal;
    const std::vector<SVPair<A>>* toMap;
};

template<typename T, typename A>
inline std::istream& operator >> ( std::istream& in, IStreamToAbbr<T,A>& toValue )
{
  std::string str;
  in >> str;

  // search map for a used abbreviation
  for ( const auto& map : *toValue.toMap )
  {
    std::string key(map.str);
    std::size_t n = str.find( key );
    if (n!=std::string::npos)
    {
      str.erase(n, key.length());                                                 // remove the scaling unit, e.g. 1.5M -> 1.5
      replace_if( str.begin(), str.end(), []( int c ){ return c == ','; }, '.' ); // use correct comma syntax for double representaion

      bool isNumber = strspn( str.c_str(), "-.0123456789" ) == str.size(); // check if valid double value
      if( !isNumber)
      {
        in.setstate( std::ios::failbit );
        return in;
      }

      double value = strtod(str.c_str(), NULL); // convert input string to double
      value *= map.value;                       // scale depending on given abbreviation/scaling factor
      double roundDir    = value < 0 ? -1 : ( value > 0 ? 1 : 0 );
      double roundOffset = std::is_floating_point<T>::value ? 0.0 : 0.5;
      value += roundDir * roundOffset;
      *toValue.dstVal = ( T ) value;
      return in;
    }
  }

  // read value in original format
  std::string::size_type posAfter;
  *toValue.dstVal = std::stoi( str, &posAfter );

  if( posAfter && !str.substr(posAfter).empty() ) // check if value is valid int
  {
    in.setstate( std::ios::failbit );
  }

  return in;
}

template<typename T, typename A>
inline std::ostream& operator << ( std::ostream& os, const IStreamToAbbr<T,A>& toValue )
{
  os << *toValue.dstVal;
  return os;
}


// ====================================================================================================================
// vvencGOPEntry
// ====================================================================================================================


inline std::ostream& operator<< ( std::ostream& os, const vvencGOPEntry& entry )
{
  os << entry.m_sliceType;
  os << entry.m_POC;
  os << entry.m_QPOffset;
  os << entry.m_QPOffsetModelOffset;
  os << entry.m_QPOffsetModelScale;
  os << entry.m_CbQPoffset;
  os << entry.m_CrQPoffset;
  os << entry.m_QPFactor;
  os << entry.m_tcOffsetDiv2;
  os << entry.m_betaOffsetDiv2;
  os << entry.m_cfgUnused1;
  os << entry.m_cfgUnused2;
  os << entry.m_cfgUnused3;
  os << entry.m_cfgUnused4;
  os << entry.m_temporalId;

  for( int l = 0; l < 2; l++)
  {
    os <<  entry.m_numRefPicsActive[l];
    os <<  entry.m_numRefPics[l];
    for ( int i = 0; i < entry.m_numRefPics[l]; i++ )
    {
      os <<  entry.m_deltaRefPics[l][i];
    }
  }

  return os;
}

inline std::istream& operator>> ( std::istream& in, vvencGOPEntry& entry )
{
  in >> entry.m_sliceType;
  in >> entry.m_POC;
  in >> entry.m_QPOffset;
  in >> entry.m_QPOffsetModelOffset;
  in >> entry.m_QPOffsetModelScale;
  in >> entry.m_CbQPoffset;
  in >> entry.m_CrQPoffset;
  in >> entry.m_QPFactor;
  in >> entry.m_tcOffsetDiv2;
  in >> entry.m_betaOffsetDiv2;
  in >> entry.m_cfgUnused1;
  in >> entry.m_cfgUnused2;
  in >> entry.m_cfgUnused3;
  in >> entry.m_cfgUnused4;
  in >> entry.m_temporalId;

  for( int l = 0; l < 2; l++)
  {
    in >> entry.m_numRefPicsActive[l];
    in >> entry.m_numRefPics[l];
    for ( int i = 0; i < entry.m_numRefPics[l]; i++ )
    {
      in >> entry.m_deltaRefPics[l][i];
    }
  }

  return in;
}


} // namespace

//! \}


Coverage Report

Created: 2026-04-01 07:49