CWE-ou-minkata/Sources/Plasma/PubUtilLib/plGImage/plMipmap.h

/*==LICENSE==*

CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011  Cyan Worlds, Inc.

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*==LICENSE==*/
///////////////////////////////////////////////////////////////////////////////
//                                                                           //
//  plMipmap Class Header                                                    //
//  Derived bitmap class representing a single mipmap.                       //
//  Cyan, Inc.                                                               //
//                                                                           //
//// Version History //////////////////////////////////////////////////////////
//                                                                           //
//  6.7.2001 mcn - Created.                                                  //
//                                                                           //
///////////////////////////////////////////////////////////////////////////////

#ifndef _plMipmap_h
#define _plMipmap_h

#include "plBitmap.h"
#include "plString.h"

#ifdef HS_DEBUGGING
    #define ASSERT_PIXELSIZE(bitmap, pixelsize)     hsAssert((bitmap)->fPixelSize == (pixelsize), "pixelSize mismatch")
    #define ASSERT_XY(bitmap, x, y)                 hsAssert(x < (bitmap)->fWidth && y < (bitmap)->fHeight, "bad XY")
    #define ASSERT_UNCOMPRESSED()                   hsAssert(fCompressionType!=kDirectXCompression, "Can't operate on compressed map.")

    // Define the following konstant to enable mipmap leak checking. This is because our normal
    // memory manager sucks when trying to track down these problems
    #define MEMORY_LEAK_TRACER
#else
    #define ASSERT_PIXELSIZE(bitmap, pixelsize)
    #define ASSERT_XY(bitmap, x, y)
    #define ASSERT_UNCOMPRESSED()               
#endif

//// Class Definition /////////////////////////////////////////////////////////

class plBitmapCreator;
class plTextGenerator;

class plMipmap : public plBitmap
{
    friend class plBitmapCreator;
    friend class plTextGenerator;

    public:
        //// Public Flags ////


        //// Public Data /////
        
        
        //// Public Members ////


        plMipmap();
        plMipmap( uint32_t width, uint32_t height, unsigned config, uint8_t numLevels = 0, uint8_t compType = kUncompressed, uint8_t format = UncompressedInfo::kRGB8888 );
        plMipmap( plMipmap *bm, float sig, uint32_t createFlags, 
                            float detailDropoffStart, float detailDropoffStop, 
                            float detailMax, float detailMin );
        virtual ~plMipmap();

        CLASSNAME_REGISTER( plMipmap );
        GETINTERFACE_ANY( plMipmap, plBitmap );


        void            Create( uint32_t width, uint32_t height, unsigned config, uint8_t numLevels, uint8_t compType = kUncompressed, uint8_t format = UncompressedInfo::kRGB8888 );

        virtual void    Reset();

        // Get the total size in bytes
        virtual uint32_t  GetTotalSize() const;

        virtual void    Read( hsStream *s, hsResMgr *mgr ) { hsKeyedObject::Read( s, mgr ); this->Read( s ); }
        virtual void    Write( hsStream *s, hsResMgr *mgr ) { hsKeyedObject::Write( s, mgr ); this->Write( s ); }

        virtual uint8_t   GetNumLevels() const { return fNumLevels; }
        virtual uint32_t  GetLevelSize( uint8_t level );        // 0 is the largest

        virtual void        Colorize();
        virtual plMipmap    *Clone() const;
        virtual void        CopyFrom( const plMipmap *source );

        inline uint32_t   GetWidth() const { return fWidth; }
        inline uint32_t   GetHeight() const { return fHeight; }
        inline uint32_t   GetRowBytes() const { return fRowBytes; }

        void            *GetImage() const { return fImage; }
        void            SetImagePtr( void *ptr ) { fImage = ptr; }
        uint8_t           *GetLevelPtr( uint8_t level, uint32_t *width = nil, uint32_t *height = nil, uint32_t *rowBytes = nil );

        // Sets the current level pointer for use with GetAddr*
        virtual void    SetCurrLevel(uint8_t level);
        void            *GetCurrLevelPtr() const { return fCurrLevelPtr; }
        uint32_t          GetCurrWidth() const { return fCurrLevelWidth; }
        uint32_t          GetCurrHeight() const { return fCurrLevelHeight; }
        uint32_t          GetCurrLevelSize() const { return fLevelSizes[ fCurrLevel ]; }
        uint32_t          GetCurrLevel() const { return fCurrLevel; }

        //  These methods return the address of the pixel specified by x and y
        //  They are meant to be fast, therefore they are inlined and do not check
        //  the fPixelSize field at runtime (except when debugging)

        uint8_t*  GetAddr8(unsigned x, unsigned y) const
                {
                    ASSERT_PIXELSIZE(this, 8);
                    ASSERT_XY(this, x, y);
                    ASSERT_UNCOMPRESSED();
                    return (uint8_t*)((char*)fCurrLevelPtr + y * fCurrLevelRowBytes + x);
                }
        uint16_t* GetAddr16(unsigned x, unsigned y) const
                {
                    ASSERT_PIXELSIZE(this, 16);
                    ASSERT_XY(this, x, y);
                    ASSERT_UNCOMPRESSED();
                    return (uint16_t*)((char*)fCurrLevelPtr + y * fCurrLevelRowBytes + (x << 1));
                }
        uint32_t* GetAddr32(unsigned x, unsigned y) const
                {
                    ASSERT_PIXELSIZE(this, 32);
                    ASSERT_XY(this, x, y);
                    ASSERT_UNCOMPRESSED();
                    return (uint32_t*)((char*)fCurrLevelPtr + y * fCurrLevelRowBytes + (x << 2));
                }
        void*   GetAddr64(unsigned x, unsigned y) const
                {
                    ASSERT_PIXELSIZE(this, 64);
                    ASSERT_XY(this, x, y);
                    ASSERT_UNCOMPRESSED();
                    return (void*)((char*)fCurrLevelPtr + y * fCurrLevelRowBytes + (x << 3));
                }

        //  This sets fPixelSize, fSpace, fFlags, for you
        //  All you need to set is
        //      fWidth, fHeight, fRowBytes, fImage and fColorTable
        enum {
            kColor8Config = 0,
            kGray44Config = 1,
            kGray4Config = 2,
            kGray8Config = 8,       // So we can use bit depths instead
            kRGB16Config = 16,
            kRGB32Config = 24,
            kARGB32Config = 32,
        };

        void    SetConfig( unsigned config );


        //// Really complex creation stuff ////

        enum {
            kCreateDetailAlpha      = 0x1,
            kCreateDetailAdd        = 0x2,
            kCreateDetailMult       = 0x4,
            kCreateDetailMask       = kCreateDetailAlpha | kCreateDetailAdd | kCreateDetailMult,
            kCreateCarryAlpha       = 0x8,
            kCreateCarryWhite       = 0x10,
            kCreateCarryBlack       = 0x20,
            kCreateCarryMask        = kCreateCarryAlpha | kCreateCarryWhite | kCreateCarryBlack
        };
        enum hsGPixelType {
            kPixelARGB4444,
            kPixelARGB1555,
            kPixelAI88,
            kPixelI8
        };
        enum hsGCopyOptions {
            kCopyLODMask,
        };

        enum {
            kColorDataRLE   = 0x1,
            kAlphaDataRLE   = 0x2
        };

        void    SetBitmapAsLevel(uint8_t iDst, plMipmap *bm, float sig, uint32_t createFlags, 
                                              float detailDropoffStart, float detailDropoffStop, 
                                              float detailMax, float detailMin);
        void    ICreateLevelNoDetail(uint8_t iDst, const plFilterMask& mask);
        void    IBlendLevelDetailAlpha(uint8_t iDst, const plFilterMask& mask, 
                                          float detailDropoffStart, float detailDropoffStop, 
                                          float detailMax, float detailMin);
        void    IBlendLevelDetailAdd(uint8_t iDst, const plFilterMask& mask, 
                                          float detailDropoffStart, float detailDropoffStop, 
                                          float detailMax, float detailMin);
        void    IBlendLevelDetailMult(uint8_t iDst, const plFilterMask& mask, 
                                          float detailDropoffStart, float detailDropoffStop, 
                                          float detailMax, float detailMin);
        void    Filter(float sig);
        uint32_t  CopyOutPixels(uint32_t destXSize, uint32_t destYSize, uint32_t dstFormat, void *destPixels, uint32_t copyOptions);

        void    ClipToMaxSize( uint32_t maxDimension );
        void    RemoveMipping();

        void    EnsureKonstantBorder( bool clampU, bool clampV );

        enum CompositeFlags
        {
            kForceOpaque    = 0x0001,       // Copy src pixels raw, force dest alphas to opaque
            kCopySrcAlpha   = 0x0002,       // Copy the src pixels raw, including alphas, overwrite dest
            kBlendSrcAlpha  = 0x0004,       // Blend src pixels onto dest using src alpha, dest alpha = src alpha
            kMaskSrcAlpha   = 0x0008,       // Same as copySrcAlpha, but dest is untouched when src alpha = 0
            kBlendWriteAlpha= 0x0010        // Like default (0), but writes dest alpha values
        };

        class CompositeOptions
        {
            // Helper class for specifying options to Composite()
            public:
                uint16_t      fFlags;
                uint8_t       fSrcLevelsToSkip;
                uint8_t       fOpacity;
                float    fRedTint, fGreenTint, fBlueTint;
                uint16_t      fSrcClipX, fSrcClipY;           // Clipping is applied AFTER levelSkip
                uint16_t      fSrcClipWidth, fSrcClipHeight;  // 0 means max width/height

                CompositeOptions() { fFlags = 0; fSrcLevelsToSkip = 0; fRedTint = fGreenTint = fBlueTint = 1.f;
                                    fSrcClipX = fSrcClipY = fSrcClipWidth = fSrcClipHeight = 0; fOpacity = 255;}

                CompositeOptions( uint16_t flags, uint8_t srcLevelsToSkip = 0, float red = 1.f, float green = 1.f,
                                    float blue = 1.f, uint16_t srcClipX = 0, uint16_t srcClipY = 0, 
                                    uint16_t srcClipWidth = 0, uint16_t srcClipHeight = 0, uint8_t opacity = 255 ) 
                {
                    fFlags = flags;
                    fSrcLevelsToSkip = srcLevelsToSkip;
                    fRedTint = red;
                    fGreenTint = green;
                    fBlueTint = blue;
                    fSrcClipX = srcClipX;
                    fSrcClipY = srcClipY;
                    fSrcClipWidth = srcClipWidth;
                    fSrcClipHeight = srcClipHeight;
                    fOpacity = opacity;
                }
        };

        // Compositing function. Take a (smaller) mipmap and composite it onto this one at the given location. Nil options means use default
        virtual void    Composite( plMipmap *source, uint16_t x, uint16_t y, CompositeOptions *options = nil );

        // Scaling function
        enum ScaleFilter
        {
            kBoxFilter,
            kDefaultFilter = kBoxFilter
        };

        virtual void    ScaleNicely( uint32_t *destPtr, uint16_t destWidth, uint16_t destHeight,
                                uint16_t destStride, plMipmap::ScaleFilter filter ) const;

        virtual bool    ResizeNicely( uint16_t newWidth, uint16_t newHeight, plMipmap::ScaleFilter filter );

    protected:

        //// Protected Members ////

        void        *fImage;
        uint32_t    fWidth, fHeight, fRowBytes, fTotalSize;
        uint8_t     fNumLevels;
        uint32_t    *fLevelSizes;

        void        *fCurrLevelPtr;
        uint8_t     fCurrLevel;
        uint32_t    fCurrLevelWidth, fCurrLevelHeight, fCurrLevelRowBytes;

        void    IReadRawImage( hsStream *stream );
        void    IWriteRawImage( hsStream *stream );
        plMipmap *ISplitAlpha();
        void    IRecombineAlpha( plMipmap *alphaChannel );
        plMipmap *IReadRLEImage( hsStream *stream );
        void    IWriteRLEImage( hsStream *stream, plMipmap *mipmap );
        void    IReadJPEGImage( hsStream *stream );
        void    IWriteJPEGImage( hsStream *stream );
        void    IBuildLevelSizes();

        void    IColorLevel( uint8_t level, const uint8_t *colorMask );

        float    IGetDetailLevelAlpha( uint8_t level, float dropStart, float dropStop, float min, float max );

        void        ICarryZeroAlpha(uint8_t iDst);
        void        ICarryColor(uint8_t iDst, uint32_t col);

        bool        IGrabBorderColor( bool grabVNotU, uint32_t *color );
        void        ISetCurrLevelUBorder( uint32_t color );
        void        ISetCurrLevelVBorder( uint32_t color );

        virtual uint32_t  Read( hsStream *s );
        virtual uint32_t  Write( hsStream *s );

        friend class plCubicEnvironmap;

#ifdef MEMORY_LEAK_TRACER

    protected:
    
        class plRecord
        {
            public:
                plRecord    *fNext;
                plRecord    **fBackPtr;

                plString    fKeyName;
                void        *fImage;
                uint32_t    fWidth, fHeight, fRowBytes;
                uint8_t     fNumLevels;
                uint8_t     fCompressionType;
                union 
                {
                    DirectXInfo         fDirectXInfo;
                    UncompressedInfo    fUncompressedInfo;
                };
                enum Method
                {
                    kViaCreate,
                    kViaRead,
                    kViaClipToMaxSize,
                    kViaDetailMapConstructor,
                    kViaCopyFrom,
                    kViaResize
                } fCreationMethod;

                void    Link( plRecord **backPtr )
                {
                    fBackPtr = backPtr;
                    fNext = *backPtr;
                    if( fNext != nil )
                        fNext->fBackPtr = &fNext;
                    *backPtr = this;
                }

                void    Unlink()
                {
                    *fBackPtr = fNext;
                    if( fNext != nil )
                        fNext->fBackPtr = fBackPtr;
                }
        };

        static plRecord *fRecords;
        static uint32_t   fNumMipmaps;

        static void IAddToMemRecord( plMipmap *mip, plRecord::Method method );
        static void IRemoveFromMemRecord( uint8_t *image );
        static void IReportLeaks();

#endif
};


#endif // _plMipmap_h