void loadOptions( OptionMap& outOptions, void* av_class, int req_flags )
{
if( ! av_class )
return;
std::multimap<std::string, std::string> optionUnitToParentName;
std::vector<Option> childOptions;
const AVOption* avOption = NULL;
// iterate on options
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT( 51, 12, 0 )
while( ( avOption = av_next_option( av_class, avOption ) ) )
#else
while( ( avOption = av_opt_next( av_class, avOption ) ) )
#endif
{
if( ! avOption ||
! avOption->name ||
( avOption->flags & req_flags ) != req_flags )
{
continue;
}
Option option( *const_cast<AVOption*>( avOption ), av_class );
if( option.getType() == eOptionBaseTypeChild )
{
childOptions.push_back( option );
}
else
{
outOptions.insert( std::make_pair( option.getName(), option ) );
optionUnitToParentName.insert( std::make_pair( option.getUnit(), option.getName() ) );
}
}
// iterate on child options
for( std::vector<Option>::iterator itOption = childOptions.begin(); itOption != childOptions.end(); ++itOption )
{
bool parentFound = false;
for( std::multimap<std::string, std::string>::iterator itUnit = optionUnitToParentName.begin(); itUnit != optionUnitToParentName.end(); ++itUnit )
{
if( itUnit->first == itOption->getUnit() )
{
std::string nameParentOption = itUnit->second;
Option& parentOption = outOptions.at( nameParentOption );
parentOption.appendChild( *itOption );
// child of a Choice
if( parentOption.getType() == eOptionBaseTypeChoice )
{
if( itOption->getDefaultInt() == parentOption.getDefaultInt() )
parentOption.setDefaultChildIndex( parentOption.getChilds().size() - 1 );
}
parentFound = true;
break;
}
}
if( ! parentFound )
{
LOG_WARN( "Can't find a choice option for " << itOption->getName() )
}
}
}
