#pragma once
#include <windows.h>
#include <memory.h>

#if defined(WIN32_LEAN_AND_MEAN)
    #include <mmsystem.h>	// MAKEFOURCC
#endif

#include <dds/tPixel.h>
#include <dds/nvErrorCodes.h >



typedef	unsigned char	BYTE;
typedef	unsigned short	WORD;
typedef	unsigned long	DWORD;




typedef enum nvD3DFORMAT
{
    nvD3DFMT_UNKNOWN              =  0,

    nvD3DFMT_R8G8B8               = 20,
    nvD3DFMT_A8R8G8B8             = 21,
    nvD3DFMT_X8R8G8B8             = 22,
    nvD3DFMT_R5G6B5               = 23,
    nvD3DFMT_X1R5G5B5             = 24,
    nvD3DFMT_A1R5G5B5             = 25,
    nvD3DFMT_A4R4G4B4             = 26,
    nvD3DFMT_R3G3B2               = 27,
    nvD3DFMT_A8                   = 28,
    nvD3DFMT_A8R3G3B2             = 29,
    nvD3DFMT_X4R4G4B4             = 30,
    nvD3DFMT_A2B10G10R10          = 31,
    nvD3DFMT_A8B8G8R8             = 32,
    nvD3DFMT_X8B8G8R8             = 33,
    nvD3DFMT_G16R16               = 34,
    nvD3DFMT_A2R10G10B10          = 35,
    nvD3DFMT_A16B16G16R16         = 36,

    nvD3DFMT_A8P8                 = 40,
    nvD3DFMT_P8                   = 41,

    nvD3DFMT_L8                   = 50,
    nvD3DFMT_A8L8                 = 51,
    nvD3DFMT_A4L4                 = 52,

    nvD3DFMT_V8U8                 = 60,
    nvD3DFMT_L6V5U5               = 61,
    nvD3DFMT_X8L8V8U8             = 62,
    nvD3DFMT_Q8W8V8U8             = 63,
    nvD3DFMT_V16U16               = 64,
    nvD3DFMT_A2W10V10U10          = 67,

    nvD3DFMT_UYVY                 = MAKEFOURCC('U', 'Y', 'V', 'Y'),
    nvD3DFMT_R8G8_B8G8            = MAKEFOURCC('R', 'G', 'B', 'G'),
    nvD3DFMT_YUY2                 = MAKEFOURCC('Y', 'U', 'Y', '2'),
    nvD3DFMT_G8R8_G8B8            = MAKEFOURCC('G', 'R', 'G', 'B'),
    nvD3DFMT_DXT1                 = MAKEFOURCC('D', 'X', 'T', '1'),
    nvD3DFMT_DXT2                 = MAKEFOURCC('D', 'X', 'T', '2'),
    nvD3DFMT_DXT3                 = MAKEFOURCC('D', 'X', 'T', '3'),
    nvD3DFMT_DXT4                 = MAKEFOURCC('D', 'X', 'T', '4'),
    nvD3DFMT_DXT5                 = MAKEFOURCC('D', 'X', 'T', '5'),
    nvD3DFMT_3Dc                  = MAKEFOURCC('A', 'T', 'I', '2'),

    nvD3DFMT_D16_LOCKABLE         = 70,
    nvD3DFMT_D32                  = 71,
    nvD3DFMT_D15S1                = 73,
    nvD3DFMT_D24S8                = 75,
    nvD3DFMT_D24X8                = 77,
    nvD3DFMT_D24X4S4              = 79,
    nvD3DFMT_D16                  = 80,

    nvD3DFMT_D32F_LOCKABLE        = 82,
    nvD3DFMT_D24FS8               = 83,


    nvD3DFMT_L16                  = 81,

    nvD3DFMT_VERTEXDATA           =100,
    nvD3DFMT_INDEX16              =101,
    nvD3DFMT_INDEX32              =102,

    nvD3DFMT_Q16W16V16U16         =110,

    nvD3DFMT_MULTI2_ARGB8         = MAKEFOURCC('M','E','T','1'),

    // Floating point surface formats

    // s10e5 formats (16-bits per channel)
    nvD3DFMT_R16F                 = 111,
    nvD3DFMT_G16R16F              = 112,
    nvD3DFMT_A16B16G16R16F        = 113,

    // IEEE s23e8 formats (32-bits per channel)
    nvD3DFMT_R32F                 = 114,
    nvD3DFMT_G32R32F              = 115,
    nvD3DFMT_A32B32G32R32F        = 116,

    nvD3DFMT_CxV8U8               = 117,


    nvD3DFMT_FORCE_DWORD          =0x7fffffff
} nvD3DFORMAT;

typedef enum nvRescaleTypes
{
    kRescaleNone,               // no rescale
    kRescaleNearestPower2,     // rescale to nearest power of two
    kRescaleBiggestPower2,   // rescale to next bigger power of 2
    kRescaleSmallestPower2,  // rescale to smaller power of 2 
    kRescaleNextSmallestPower2,  // rescale to next smaller power of 2
    kRescalePreScale,           // rescale to this size
    kRescaleRelScale,           // relative rescale

} RescaleTypes;


typedef enum nvSharpenFilterTypes
{
    kSharpenFilterNone,
    kSharpenFilterNegative,
    kSharpenFilterLighter,
    kSharpenFilterDarker,
    kSharpenFilterContrastMore,
    kSharpenFilterContrastLess,
    kSharpenFilterSmoothen,
    kSharpenFilterSharpenSoft,
    kSharpenFilterSharpenMedium,
    kSharpenFilterSharpenStrong,
    kSharpenFilterFindEdges,
    kSharpenFilterContour,
    kSharpenFilterEdgeDetect,
    kSharpenFilterEdgeDetectSoft,
    kSharpenFilterEmboss,
    kSharpenFilterMeanRemoval,
    kSharpenFilterUnSharp,
    kSharpenFilterXSharpen,
    kSharpenFilterWarpSharp,
    kSharpenFilterCustom,
};


typedef enum nvMipMapGeneration
{
    kGenerateMipMaps = 30,
    kUseExistingMipMaps = 31,
    kNoMipMaps = 32,
    kCompleteMipMapChain = 33,  // fill in missing MIP maps

};


typedef enum nvMipFilterTypes
{
    kMipFilterPoint ,    
    kMipFilterBox ,      
    kMipFilterTriangle , 
    kMipFilterQuadratic ,
    kMipFilterCubic ,    

    kMipFilterCatrom ,   
    kMipFilterMitchell , 

    kMipFilterGaussian , 
    kMipFilterSinc ,     
    kMipFilterBessel ,   

    kMipFilterHanning ,  
    kMipFilterHamming ,  
    kMipFilterBlackman , 
    kMipFilterKaiser,
};


enum nvTextureFormats
{
    kDXT1 ,
    kDXT1a ,  // DXT1 with one bit alpha
    kDXT3 ,   // explicit alpha
    kDXT5 ,   // interpolated alpha
    k4444 ,   // a4 r4 g4 b4
    k1555 ,   // a1 r5 g5 b5
    k565 ,    // a0 r5 g6 b5
    k8888 ,   // a8 r8 g8 b8
    k888 ,    // a0 r8 g8 b8
    k555 ,    // a0 r5 g5 b5
    kP8c   ,   // paletted color only
    kV8U8 ,   // DuDv 
    kCxV8U8 ,   // normal map
    kA8 ,            // alpha only
    kP4c  ,            // 16 bit color palette
    kQ8W8V8U8,
    kA8L8,
    kR32F,
    kA32B32G32R32F,
    kA16B16G16R16F,
    kL8,       // luminance
    kP8a   ,   // paletted with alpha
    kP4a  ,            // 16 bit color palette with alpha
    kR16F,            // single component fp16
    kDXT5_NM ,   // normal map compression.  G = Y, alpha = X
    kX888 ,    // aX r8 g8 b8
    kV16U16,
    kG16R16,
    kG16R16F,
    k3Dc,

    kUnknownTextureFormat = 0xFFFFFFFF,
    
};


enum nvTextureTypes
{
    kTextureTypeTexture2D,
    kTextureTypeCubeMap,
    kTextureTypeVolumeMap,  
};


enum nvCompressionWeighting
{
    kLuminanceWeighting,
    kGreyScaleWeighting,
    kTangentSpaceNormalMapWeighting,
    kObjectSpaceNormalMapWeighting,
    kUserDefinedWeighting,     // used values stored in 'weight'
};
    
enum nvNormalMapFilters
{
    kFilter4x = 1040,
    kFilter3x3 = 1041,
    kFilter5x5 = 1042,
    kFilter7x7 = 1043,
    kFilter9x9 = 1044,
    kFilterDuDv = 1045,
};


enum nvHeightConversionMethods
{
    kAlphaChannel = 1009,
    kAverageRGB = 1010,
    kBiasedRGB = 1011,
    kRed = 1012,
    kGreen = 1013,
    kBlue = 1014,
    kMaxRGB = 1015,
    kColorSpace = 1016,
    kNormalize = 1017,
    kNormalMapToHeightMap = 1018,
};

enum nvAlphaResult
{
    kAlphaUnchanged = 1033,
    kAlphaHeight = 1034,
    kAlphaSetToZero = 1035,  
    kAlphaSetToOne = 1036,
};

         
enum nvQualitySetting 
{
    kQualityFastest = 68,
    kQualityNormal = 69,
    kQualityProduction = 71,  // typical value
    kQualityHighest = 72,
};


enum nvPixelFormat
{
    PF_RGBA,
    PF_FP32,
};



// filled in by reading a dds file
struct DDS_PIXELFORMAT
{
    DWORD dwSize;
    DWORD dwFlags;
    DWORD dwFourCC;
    DWORD dwRGBBitCount;
    DWORD dwRBitMask;
    DWORD dwGBitMask;
    DWORD dwBBitMask;
    DWORD dwRGBAlphaBitMask;
};


class nvImageContainer
{

public:
   // loaded directly from the .dds header
    DDS_PIXELFORMAT m_ddpfPixelFormat;


    nvImageContainer()
    {

        bits_per_component = 0; //image's resolution in bits per pixel per plane
        paletteSize = 0;
    


        bFoundAlphaInRead = false;
        bCompressed = false;
        fmt = 0;  // nvD3DFMT_UNKNOWN

        dwCubeMapFlags = 0;

        actualMipMapCount = 1;
        //maxPossibleMipMapCount = 1;
        nMIPMapsToLoad = 1;
        depth = 0;


    }
    
 

    // in file read
    size_t width;  // of MIP 0
    size_t height; // of MIP 0
    size_t depth; // for volume maps

    size_t actualMipMapCount;
    size_t nMIPMapsToLoad;


    bool bFoundAlphaInRead; // is alpha field present and non-zero

    // in the input file

    DWORD dwCubeMapFlags;
    size_t bits_per_component; 
    size_t nPlanes;      // number of planes in the file format
    bool   bCompressed;  // is file a compressed format
    size_t paletteSize;  // 16 or 256 entries
    rgba_t palette[256];

    DWORD fmt;       // D3DFORMAT specified in .dds file

    nvTextureFormats textureFormat;
    
    nvTextureTypes textureType;


 


    fpMipMappedImage fpMIPImage;
    fpMipMappedCubeMap fpMIPCubeMap;
    fpMipMappedVolumeMap fpMIPVolumeMap;

    RGBAMipMappedImage   rgbaMIPImage;
    RGBAMipMappedCubeMap  rgbaMIPCubeMap;
    RGBAMipMappedVolumeMap rgbaMIPVolumeMap;


    ~nvImageContainer()
    {
    }
};
         


