Application: gvSIG desktop

/* $Id$ */

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

//                                                                         //

// 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 LTIVIEWERIMAGEFILTER_H

#define LTIVIEWERIMAGEFILTER_H

// lt_lib_mrsid_core

#include "lti_imageFilter.h"

LT_BEGIN_NAMESPACE(LizardTech)

#if defined(LT_COMPILER_MS)

   #pragma warning(push,4)

#endif

/**

 * performs datatype and colorspace transforms on an image to make it displayable

 *

 * This class wraps the LTIDataType, LTIColorTransformer, and

 * LTIDynamicRangeFilter classes in order to transform the input image into

 * an 8-bit datatype with colorspace greyscale or RGB, as is required by most

 * display engines.

 */

class LTIViewerImageFilter : public LTIImageFilter

{

public:

   /**

    * constructor

    *

    * Transforms the input image to 8-bit samples and a colorspace of either

    * greyscale or RGB.  This allows the image's pixels to be more easily

    * passed to command rendering engines.

    *

    * The class also allows for the dynamic range of the image to be adjusted

    * to make the image's histogram fit the datatype width.  RGB pixels can

    * also be remapped to be in BGR format (as is required for Windows

    * bitmaps).

    *

    * @param  sourceImage      the input image

    * @param  useDynamicRange  if set, the image data will be scaled

    *                          according to the dynamic range metadata in the

    *                          image (if any)

    * @param  useBGR           if set, RGB samples will be remapped to BGR

    *                          format

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

    *                          sourceImage

    */

   LTIViewerImageFilter(LTIImageStage* sourceImage,

                        bool useDynamicRange,

                        bool useBGR,

                        bool takeOwnership);

   virtual ~LTIViewerImageFilter();

   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;

   LTIImageFilter* m_drTransform;

   LTIImageFilter* m_csTransform;

   LTIImageFilter* m_dtTransform;

   LTIImageFilter* m_mapTransform;

   LTIImageStage* m_lastStage;

   bool m_useBGR;

   bool m_useDynamicRange;

   // nope

   LTIViewerImageFilter(const LTIViewerImageFilter&);

   LTIViewerImageFilter& operator=(const LTIViewerImageFilter&);

};

LT_END_NAMESPACE(LizardTech)

#if defined(LT_COMPILER_MS)

        #pragma warning(pop)

#endif

#endif // LTIVIEWERIMAGEFILTER_H