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/* $Id: lti_dynamicRangeFilter.h 720 2004-12-28 16:18:01Z igbrotru $ */

/* //////////////////////////////////////////////////////////////////////////

//                                                                         //

// This code is Copyright (c) 2004 LizardTech, Inc, 1008 Western Avenue,   //

// Suite 200, Seattle, WA 98104.  Unauthorized use or distribution         //

// prohibited.  Access to and use of this code is permitted only under     //

// license from LizardTech, Inc.  Portions of the code are protected by    //

// US and foreign patents and other filings. All Rights Reserved.          //

//                                                                         //

////////////////////////////////////////////////////////////////////////// */

/* PUBLIC */

#ifndef LTI_DYNAMICRANGEFILTER_H

#define LTI_DYNAMICRANGEFILTER_H

// lt_lib_mrsid_core

#include "lti_imageFilter.h"

LT_BEGIN_NAMESPACE(LizardTech)

#if defined(LT_COMPILER_MS)

   #pragma warning(push,4)

#endif

/**

 * change dynamic range of image

 *

 * Adjusts the sample values to fit the given dynamic range.

 */

class LTIDynamicRangeFilter : public LTIImageFilter

{

public:

   /**

    * constructor

    *

    * Creates an image stage with the sample data adjusted according to the

    * given dynamic range values.

    *

    * @param  sourceImage    the base image

    * @param  window         the number of units or "width" of the desired range

    * @param  level          the midpoint of the window; this effectively defines

    *                        the min and max sample values

    * @param  takeOwnership  set to true to have the filter delete the \a sourceImage

    */

   LTIDynamicRangeFilter(LTIImageStage* sourceImage,

                         double window,

                         double level,

                         bool takeOwnership);

   /**

   * Constructor.

   *

   * Creates an image stage with the sample data adjusted according to the

   * dynamic range values inherit in the image, e.g. in the metadata.

   *

   * @param  sourceImage    the base image

   * @param  takeOwnership  set to true to have the filter delete the \a sourceImage

   */

   LTIDynamicRangeFilter(LTIImageStage* sourceImage,

                         bool takeOwnership);

   virtual ~LTIDynamicRangeFilter();

   virtual LT_STATUS initialize();

protected:

   LT_STATUS decodeBegin(const LTIScene& scene);

   LT_STATUS decodeEnd();

   LT_STATUS decodeStrip(LTISceneBuffer& stripBuffer, const LTIScene& stripScene);

private:

   typedef LTIImageFilter Super;

   double m_window;

   double m_level;

   const bool m_userInfo;

   double m_drmin;

   double m_drmax;

   // nope

   LTIDynamicRangeFilter(const LTIDynamicRangeFilter&);

   LTIDynamicRangeFilter& operator=(const LTIDynamicRangeFilter&);

};

LT_END_NAMESPACE(LizardTech)

#if defined(LT_COMPILER_MS)

        #pragma warning(pop)

#endif

#endif // LTI_DYNAMICRANGEFILTER_H