#ifndef _EJPGL_H#define _EJPGL_H#define MATRIX_SIZE 8#define MACRO_BLOCK_SIZE 16#define NUMBER_OF_PIXELS MATRIX_SIZE*MATRIX_SIZEtypedef struct {   unsigned int size;               /* Header size in bytes      */   int width,height;                /* Width and height of image */   unsigned short int planes;       /* Number of colour planes   */   unsigned short int bits;         /* Bits per pixel            */   unsigned int compression;        /* Compression type          */   unsigned int imagesize;          /* Image size in bytes       */   int xresolution,yresolution;     /* Pixels per meter          */   unsigned int ncolours;           /* Number of colours         */   unsigned int importantcolours;   /* Important colours         */   unsigned char palette[1024];      /* Storage for palette       */} INFOHEADER;typedef struct {   int restofheader; //TODO   INFOHEADER info;                 /* Information header        */} BMPHEADER;typedef struct {   unsigned int row;     /* Width and height of image */   unsigned int col;   /* Width and height of image */} BLOCKINFO;typedef struct {        unsigned char QTMarker[2];        unsigned char Length[2];        unsigned char QTInfo[130]; //bit 0..3: number of QT (0..3, otherwise error)                                //     bit 4..7: precision of QT, 0 = 8 bit, otherwise 16 bit    //    unsigned char ValuesQT[]; //max 192 values. 64*(precision+1) bytes} QTINFO;typedef struct {            unsigned char HTMarker[2];            unsigned char Length[2];            unsigned char HuffmanInfo[416]; //Array containing ALL huffman information            //For each color component holds:                    //First byte is used as info byte, followed by 16 bytes with values used                    //for counting the different huffman codes, finally the corresponding                    //huffman codes will follow. This sequence can repeat it self for                    //different Huffman tables, both DC or AC tables.                    //The structure of the information byte is as follows:                    //bit 0..3 : number of HT (0..3, otherwise error)                    //bit 4     : type of HT, 0 = DC table, 1 = AC table                    //bit 5..7 : not used, must be 0 (Used for  progressive scan JPEG)} HTINFO;typedef struct {            unsigned char APP0Marker[2];            unsigned char Length[2];            unsigned char Identifier[5];            unsigned char Version[2];            unsigned char Units;            unsigned char XDensity[2];            unsigned char YDensity[2];            unsigned char ThumbWidth;            unsigned char ThumbHeight;} APP0INFO;typedef struct {            unsigned char SOF0Marker[2];            unsigned char Length[2];            unsigned char DataPrecision; //This is in bits/sample, usually 8 (12 and 16 not supported by most software).            unsigned char ImageHeight[2];            unsigned char ImageWidth[2];            unsigned char Components; //Usually 1 = grey scaled, 3 = color YcbCr or YIQ 4 = color CMYK            unsigned char ComponentInfo[3][3]; //Read each component data of 3 bytes. It contains,                                       //(component Id(1byte)(1 = Y, 2 = Cb, 3 = Cr, 4 = I, 5 = Q),                                         //sampling factors (1byte) (bit 0-3 vertical., 4-7 horizontal.),                                           //quantization table number (1 byte)).} SOF0INFO;typedef struct {            unsigned char SOSMarker[2];            unsigned char Length[2]; //This must be equal to 6+2*(number of components in scan).            unsigned char ComponentCount; //This must be >= 1 and <=4 (otherwise error), usually 1 or 3            unsigned char Component[3][2]; // For each component, read 2 bytes. It contains,                                          //1 byte   Component Id (1=Y, 2=Cb, 3=Cr, 4=I, 5=Q),                                            //1 byte   Huffman table to use :                                              //bit 0..3 : AC table (0..3)                                                //bit 4..7 : DC table (0..3)            unsigned char Ignore[3]; //We have to skip 3 bytes} SOSINFO;typedef struct {            unsigned char DRIMarker[2];            unsigned char Length[2];            unsigned char RestartInteral[2]; // Interval of the restart markers} DRIINFO;typedef struct {            unsigned char SOIMarker[2]; //Start of image marker            APP0INFO app0;            QTINFO qt;            SOF0INFO sof0;            HTINFO ht;//            DRIINFO dri;            SOSINFO sos;} JPEGHEADER;int openBMPJPG(int argc, char* bmpfilename, char* jpgfilename);int closeBMPJPG();void    HuffmanEncodeFinishSend();int idct8x8(int* fblock, char* sblock);#endif