IMG_FileFilterFlip.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        IMG_FileFilterFlip ( IMG Library, C++)
 *
 * COMMENTS:
 *
 *    Read/Write from a memory buffer.
 *    Supports vertical and horizontal flips, as well as flopping (90' rot). 
 */

#pragma once

#ifndef IMG_FILE_FILTER_FLIP_H
#define IMG_FILE_FILTER_FLIP_H

#include "IMG_API.h"
#include "IMG_FileFilter.h"
#include <UT/UT_BitArray.h>
#include <UT/UT_NonCopyable.h>
#include <UT/UT_ValArray.h>

class PXL_Raster;

class IMG_API IMG_FileFilterFlip : public IMG_FileFilter
{
public:
             IMG_FileFilterFlip(IMG_File *file_to_filter);
            ~IMG_FileFilterFlip() override;

             UT_NON_COPYABLE(IMG_FileFilterFlip)

    const char  *className() const override { return "IMG_FileFilterFlip"; }
    
    void         init(bool flipx, bool flipy, bool flop);

    const void  *readPlaneScanline(int y, const IMG_Plane &pi) override;
    
    int          writePlaneScanline(const void *data, int y,
                                    const IMG_Plane &pi) override;

    int          isTopFirst() const override;
    void         computeCommonData() override;
    
    int          getDeepPixelSamples(int x, int y) override;
    bool         getDeepPixelPlaneData(int x, int y,
                                       const IMG_Plane &plane,
                                       float *data) override;
    bool         getDeepPixelData(int x, int y, float * const *data) override;
    bool         readDeepPixelData(int x, int y,
                                   PXL_DeepSampleList &p) override;
    bool         writeDeepPixelData(int x, int y,
                                    const PXL_DeepSampleListPtr &p) override;

private:
    
    const void  *extractScanline(int y, const PXL_Raster *p);
    bool         fillRasters();
    void         finishedScanline(int scan) override;

    void         flipHorizontal(void *dest, const void *source,
                                const IMG_Plane &pi);
    
    void         computeXY(int &x, int &y);
    
    bool         myXFlip;
    bool         myYFlip;
    bool         myFlop;
    bool         myUseRasters;
    bool         myRastersFilled;
    
    UT_ValArray<PXL_Raster *>    myPlaneImage;
    void       *myRasterBuffer;
};

#endif