Method get

deps/opencv/modules/core/src/algorithm.cpp:878–1109

}

void AlgorithmInfo::get(const Algorithm* algo, const char* parameter, int argType, void* value) const
{
    const Param* p = findstr(data->params, parameter);
    if( !p )
        CV_Error_( CV_StsBadArg, ("No parameter '%s' is found", parameter ? parameter : "<NULL>") );

    GetSetParam f;
    f.get_int = p->getter;

    if( argType == Param::INT || argType == Param::BOOLEAN || argType == Param::REAL || argType == Param::SHORT
            || argType == Param::FLOAT || argType == Param::UNSIGNED_INT || argType == Param::UINT64 || argType == Param::UCHAR)
    {
        if( p->type == Param::INT )
        {
            if (!( argType == Param::INT || argType == Param::REAL || argType == Param::FLOAT || argType == Param::UNSIGNED_INT || argType == Param::UINT64 || argType == Param::UCHAR))
            {
                string message = getErrorMessageForWrongArgumentInGetter(algo->name(), parameter, p->type, argType);
                CV_Error(CV_StsBadArg, message);
            }
            int val = p->getter ? (algo->*f.get_int)() : *(int*)((uchar*)algo + p->offset);

            if( argType == Param::INT )
                *(int*)value = (int)val;
            else if ( argType == Param::REAL )
                *(double*)value = (double)val;
            else if ( argType == Param::FLOAT)
                *(float*)value = (float)val;
            else if ( argType == Param::UNSIGNED_INT )
                *(unsigned int*)value = (unsigned int)val;
            else if ( argType == Param::UINT64 )
                *(uint64*)value = (uint64)val;
            else if ( argType == Param::UCHAR)
                *(uchar*)value = (uchar)val;
            else
                CV_Error(CV_StsBadArg, "Wrong argument type");

        }
        else if( p->type == Param::SHORT )
        {
            if( argType != Param::INT )
            {
                string message = getErrorMessageForWrongArgumentInGetter(algo->name(), parameter, p->type, argType);
                CV_Error(CV_StsBadArg, message);
            }
            int val = p->getter ? (algo->*f.get_int)() : *(short*)((uchar*)algo + p->offset);

            *(int*)value = val;
        }
        else if( p->type == Param::BOOLEAN )
        {
            if (!( argType == Param::INT || argType == Param::BOOLEAN || argType == Param::REAL || argType == Param::FLOAT || argType == Param::UNSIGNED_INT || argType == Param::UINT64 || argType == Param::UCHAR))
            {
                string message = getErrorMessageForWrongArgumentInGetter(algo->name(), parameter, p->type, argType);
                CV_Error(CV_StsBadArg, message);
            }
            bool val = p->getter ? (algo->*f.get_bool)() : *(bool*)((uchar*)algo + p->offset);

            if( argType == Param::INT )