ColorBarsProcess.tcc

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#include "ColorBarsProcess.hpp"

#include <tuttle/plugin/ofxToGil/point.hpp>

#include <boost/numeric/conversion/cast.hpp>

namespace tuttle {
namespace plugin {
namespace colorBars {

template<class View>
ColorBarsProcess<View>::ColorBarsProcess( ColorBarsPlugin &instance )
: ImageGilProcessor<View>( instance, eImageOrientationFromBottomToTop )
, _plugin( instance )
{
}

template<class View>
void ColorBarsProcess<View>::setup( const OFX::RenderArguments& args )
{
        using namespace boost::gil;
        ImageGilProcessor<View>::setup( args );

        
        boost::function_requires<PixelLocatorConcept<Locator> >();
        gil_function_requires < StepIteratorConcept<typename Locator::x_iterator> >();

        OfxRectD rod = _plugin._clipDst->getCanonicalRod( args.time );

        Point dims( rod.x2 - rod.x1, rod.y2 - rod.y1 );

        ColorBarsParams params = _plugin.getProcessParams();
        
        // create a squared view
        ColorBarsVirtualView colorbars( Point( 1, 1 ), Locator( Point( 0, 0 ), Point( 1, 1 ), ColorBarsFunctorT( dims.x, params.mode == eColorBarsLevels75 ) ) );
        // create a subview depending on the image ratio
        _srcView = subimage_view<>( colorbars, 0, 0, boost::numeric_cast<int>( dims.x ), boost::numeric_cast<int>( dims.y ) );
        
}

/**
 * @brief Function called by rendering thread each time a process must be done.
 * @param[in] procWindowRoW  Processing window
 */
template<class View>
void ColorBarsProcess<View>::multiThreadProcessImages( const OfxRectI& procWindowRoW )
{
        using namespace boost::gil;
        OfxRectI procWindowOutput = this->translateRoWToOutputClipCoordinates( procWindowRoW );
        const OfxPointI procWindowSize = {
                procWindowRoW.x2 - procWindowRoW.x1,
                procWindowRoW.y2 - procWindowRoW.y1
        };
        
        for( int y = procWindowOutput.y1; y < procWindowOutput.y2; ++y )
        {
                typename ColorBarsVirtualView::x_iterator src_it = this->_srcView.x_at( procWindowOutput.x1, y );
                typename View::x_iterator dst_it                 = this->_dstView.x_at( procWindowOutput.x1, y );
                
                for( int x = procWindowOutput.x1; x < procWindowOutput.x2; ++x, ++src_it, ++dst_it )
                {
                        *dst_it = *src_it;
                }
                if( this->progressForward( procWindowSize.x ) )
                        return;
        }
}

}
}
}