#include "stdfx.h"

#include "tfxparam.h"

#include "trop.h"

class GammaFx : public TStandardRasterFx

{

	FX_PLUGIN_DECLARATION(GammaFx)

	TRasterFxPort m_input;

	TDoubleParamP m_gamma;

public:

	GammaFx()

		: m_gamma(1.0)

	{

		bindParam(this, "value", m_gamma);

		addInputPort("Source", m_input);

		//m_gamma->setValueRange(0, std::numeric_limits<double>::max());</double>

		m_gamma->setValueRange(0.0, 200.0);

	}

	~GammaFx(){};

	bool doGetBBox(double frame, TRectD &bBox, const TRenderSettings &info)

	{

		if (m_input.isConnected())

			return m_input->doGetBBox(frame, bBox, info);

		else {

			bBox = TRectD();

			return false;

		}

	};

	void doCompute(TTile &tile, double frame, const TRenderSettings &);

	bool canHandle(const TRenderSettings &info, double frame) { return true; }

};

//-------------------------------------------------------------------

void GammaFx::doCompute(TTile &tile, double frame, const TRenderSettings &ri)

{

	if (!m_input.isConnected())

		return;

	m_input->compute(tile, frame, ri);

	double gamma = m_gamma->getValue(frame);

	if (gamma == 0.0)

		gamma = 0.01;

	TRop::gammaCorrect(tile.getRaster(), gamma);

}

//------------------------------------------------------------------

FX_PLUGIN_IDENTIFIER(GammaFx, "gammaFx")