ImageGilFilterProcessor.hpp

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#ifndef _TUTTLE_PLUGIN_IMAGEGILFILTERPROCESSOR_HPP_
#define _TUTTLE_PLUGIN_IMAGEGILFILTERPROCESSOR_HPP_

#include "ImageGilProcessor.hpp"

#include <boost/scoped_ptr.hpp>

namespace tuttle {
namespace plugin {

/**
 * @brief Base class that can be used to process images of any type using boost::gil library view to access images.
 */
template <class SView, class DView = SView>
class ImageGilFilterProcessor : public ImageGilProcessor<DView>
{
protected:
        OFX::Clip* _clipSrc;       ///< Source image clip
        boost::scoped_ptr<OFX::Image> _src;
        OfxRectI _srcPixelRod;
        SView _srcView; ///< @brief source clip (filters have only one input)

public:
        ImageGilFilterProcessor( OFX::ImageEffect& effect, const EImageOrientation imageOrientation );
        virtual ~ImageGilFilterProcessor();

        virtual void setup( const OFX::RenderArguments& args );
};

template<class SView, class DView>
ImageGilFilterProcessor<SView, DView>::ImageGilFilterProcessor( OFX::ImageEffect& effect, const EImageOrientation imageOrientation )
        : ImageGilProcessor<DView>( effect, imageOrientation )
{
        _clipSrc = effect.fetchClip( kOfxImageEffectSimpleSourceClipName );
        
        if( ! _clipSrc->isConnected() )
                BOOST_THROW_EXCEPTION( exception::ImageNotConnected() );
}

template<class SView, class DView>
ImageGilFilterProcessor<SView, DView>::~ImageGilFilterProcessor()
{}

template<class SView, class DView>
void ImageGilFilterProcessor<SView, DView>::setup( const OFX::RenderArguments& args )
{
        ImageGilProcessor<DView>::setup( args );

        // source view
//      TUTTLE_LOG_INFOS;
//      TUTTLE_LOG_VAR( TUTTLE_INFO, "src - fetchImage " << time );
        _src.reset( _clipSrc->fetchImage( args.time ) );
        if( ! _src.get() )
                BOOST_THROW_EXCEPTION( exception::ImageNotReady()
                                << exception::dev() + "Error on clip " + quotes(_clipSrc->name())
                                << exception::time( args.time ) );
        if( _src->getRowDistanceBytes() == 0 )
                BOOST_THROW_EXCEPTION( exception::WrongRowBytes()
                                << exception::dev() + "Error on clip " + quotes(_clipSrc->name())
                                << exception::time( args.time ) );
        
        if( OFX::getImageEffectHostDescription()->hostName == "uk.co.thefoundry.nuke" )
        {
                // bug in nuke, getRegionOfDefinition() on OFX::Image returns bounds
                _srcPixelRod   = _clipSrc->getPixelRod( args.time, args.renderScale );
        }
        else
        {
                _srcPixelRod = _src->getRegionOfDefinition();
        }
        _srcView = ImageGilProcessor<DView>::template getCustomView<SView>( _src.get(), _srcPixelRod );

//      // Make sure bit depths are same
//      if( this->_src->getPixelDepth() != this->_dst->getPixelDepth() ||
//          this->_src->getPixelComponents() != this->_dst->getPixelComponents() )
//              BOOST_THROW_EXCEPTION( exception::BitDepthMismatch() );
}

}
}

#endif