/*-----------------------------------------------------------------
LOG
    GEM - Graphics Environment for Multimedia

    Copyright (c) 2003 James Tittle
    ported from pete's_plugins (www.petewarden.com)
    For information on usage and redistribution, and for a DISCLAIMER OF ALL
    WARRANTIES, see the file, "GEM.LICENSE.TERMS" in this distribution.

-----------------------------------------------------------------*/

#ifndef INCLUDE_PIX_LEVELS_H_
#define INCLUDE_PIX_LEVELS_H_

#include "Base/GemPixObj.h"

const int nChannelFunction_Levels=256;

/*-----------------------------------------------------------------
-------------------------------------------------------------------
CLASS
    pix_levels
    
    

KEYWORDS
    pix
    
DESCRIPTION

    
   
-----------------------------------------------------------------*/
class GEM_EXTERN pix_levels : public GemPixObj
{
    CPPEXTERN_HEADER(pix_levels, GemPixObj)

    public:

	    //////////
	    // Constructor
    	pix_levels();
    	
    protected:
    	
    	//////////
    	// Destructor
    	virtual ~pix_levels();

    	//////////
    	// Do the processing
    	virtual void 	processYUVImage(imageStruct &image);

        //////////
        // Do the processing
        virtual void 	processRGBAImage(imageStruct &image);

	imageStruct	myImage;
	int		nHeight;
	int		nWidth;
	int		nCsize;
	int		init;

	U32*		pSource;
	U32*		pOutput;
	
	bool m_DoAuto;
	bool m_DoUniform;
	bool m_DoAllowInversion;

	float m_UniformInputFloor;
	float m_UniformInputCeiling;
	float m_UniformOutputFloor;
	float m_UniformOutputCeiling;

	float m_RedInputFloor;
	float m_RedInputCeiling;
	float m_RedOutputFloor;
	float m_RedOutputCeiling;

	float m_GreenInputFloor;
	float m_GreenInputCeiling;
	float m_GreenOutputFloor;
	float m_GreenOutputCeiling;

	float m_BlueInputFloor;
	float m_BlueInputCeiling;
	float m_BlueOutputFloor;
	float m_BlueOutputCeiling;

	float m_AlphaInputFloor;
	float m_AlphaInputCeiling;
	float m_AlphaOutputFloor;
	float m_AlphaOutputCeiling;

	float m_LowPercentile;
	float m_HighPercentile;

	int m_nRedTable[nChannelFunction_Levels];
	int m_nGreenTable[nChannelFunction_Levels];
	int m_nBlueTable[nChannelFunction_Levels];
	int m_nAlphaTable[nChannelFunction_Levels];

	void Pete_Levels_SetupCFSettings(int colour=GL_RGBA);
	void Pete_Levels_CalculateAutoLevels(int colour=GL_RGBA);
	void Pete_ChannelFunction_Render();
        void Pete_ChannelFunction_RenderYUV();
	
	
    private:
    
    	//////////
    	// Static member functions
    	static void 	autoCallback(void *data, t_floatarg m_DoAuto);
	static void 	uniCallback(void *data, t_floatarg m_DoUniform);
	static void 	invCallback(void *data, t_floatarg m_DoAllowInversion);
	static void 	uniformCallback(void *data, t_floatarg m_UniformInputFloor, t_floatarg m_UniformInputCeiling, t_floatarg m_UniformOutputFloor, t_floatarg m_UniformOutputCeiling);
	static void 	redCallback(void *data, t_floatarg m_RedInputFloor, t_floatarg m_RedInputCeiling, t_floatarg m_RedOutputFloor, t_floatarg m_RedOutputCeiling);
	static void 	greenCallback(void *data, t_floatarg m_GreenInputFloor,t_floatarg m_GreenInputCeiling, t_floatarg m_GreenOutputFloor, t_floatarg m_GreenOutputCeiling);
	static void 	blueCallback(void *data, t_floatarg m_BlueInputFloor, t_floatarg m_BlueInputCeiling, t_floatarg m_BlueOutputFloor, t_floatarg m_BlueOutputCeiling);
	static void 	lowPCallback(void *data, t_floatarg m_LowPercentile);
	static void 	hiPCallback(void *data, t_floatarg m_HighPercentile);
};

#endif	// for header file
