FadePlugin.cpp

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#include "FadePlugin.hpp"
#include "FadeProcess.hpp"
#include "FadeDefinitions.hpp"

#include <boost/gil/gil_all.hpp>

namespace tuttle {
namespace plugin {
namespace fade {


FadePlugin::FadePlugin( OfxImageEffectHandle handle )
: OFX::ImageEffect( handle )
{
    _clipSrcFrom = fetchClip( kOfxImageEffectTransitionSourceFromClipName );
    _clipSrcTo = fetchClip( kOfxImageEffectTransitionSourceToClipName );
    _clipDst = fetchClip( kOfxImageEffectOutputClipName );
        
        _paramTransition = fetchDoubleParam( kOfxImageEffectTransitionParamName );
        _paramRod = fetchChoiceParam( kParamRod );
        _paramColor = fetchRGBAParam( kParamColor );
}

FadeProcessParams FadePlugin::getProcessParams() const
{
        FadeProcessParams params;
        params._transition = _paramTransition->getValue();
        params._rod = static_cast<EParamRod>( _paramRod->getValue() );
        params._color = ofxToGil( _paramColor->getValue() );
        return params;
}

void FadePlugin::changedParam( const OFX::InstanceChangedArgs &args, const std::string &paramName )
{
//    if( paramName == kParamHelpButton )
//    {
//        sendMessage( OFX::Message::eMessageMessage,
//                     "", // No XML resources
//                     kParamHelpString );
//    }
}

//bool FadePlugin::getRegionOfDefinition( const OFX::RegionOfDefinitionArguments& args, OfxRectD& rod )
//{
//      FadeProcessParams<Scalar> params = getProcessParams();
//      OfxRectD srcRod = _clipSrc->getCanonicalRod( args.time );
//
//      switch( params._border )
//      {
//              case eParamBorderPadded:
//                      rod.x1 = srcRod.x1 + 1;
//                      rod.y1 = srcRod.y1 + 1;
//                      rod.x2 = srcRod.x2 - 1;
//                      rod.y2 = srcRod.y2 - 1;
//                      return true;
//              default:
//                      break;
//      }
//      return false;
//}

bool FadePlugin::isIdentity( const OFX::RenderArguments& args, OFX::Clip*& identityClip, double& identityTime )
{
        FadeProcessParams params = getProcessParams();
                if( params._transition == 0.0 && _clipSrcFrom->isConnected() )
        {
                identityClip = _clipSrcFrom;
                identityTime = args.time;
                return true;
        }
        else if( params._transition == 1.0 && _clipSrcTo->isConnected() )
        {
                identityClip = _clipSrcTo;
                identityTime = args.time;
                return true;
        }
        return false;
}

/**
 * @brief The overridden render function
 * @param[in]   args     Rendering parameters
 */
void FadePlugin::render( const OFX::RenderArguments &args )
{
        doGilRender<FadeProcess>( *this, args );
}


}
}
}