#ifndef JPEG_H
#define JPEG_H

#define MAXJSAMPLE 255
#define CENTERJSAMPLE 128
#define RANGE_MASK  (MAXJSAMPLE * 4 + 3) /* 2 bits wider than legal samples */

#define JJ_NUM_HUFF_TBLS  4
#define JJ_NUM_QUANT_TBLS 4

#define HUFF_LOOKAHEAD 8

typedef struct HUFFMAN_STRUCT {
    long mincode[17];
    long maxcode[18];
    long valptr[17];
    ushort cache[256];
    uchar vals[256];
    uchar bits[18];
} JJ_HUFF_TBL;

typedef struct COMPONENT_STRUCT {
  ulong hvsample;
  ulong ac_htbl_num;
  ulong dc_htbl_num;
  ulong qtbl_num;
  ushort id;
  long dc;
} COMPONENT_HDR;

#define DCTSIZE 8
#define DCTSIZE2 64

typedef int ISLOW_MULT_TYPE;


/* JPEG MARKERS */
#define   M_SOF0    0xc0
#define   M_SOF1    0xc1
#define   M_SOF2    0xc2
#define   M_SOF3    0xc3
#define   M_SOF5    0xc5
#define   M_SOF6    0xc6
#define   M_SOF7    0xc7
#define   M_JPG     0xc8
#define   M_SOF9    0xc9
#define   M_SOF10   0xca
#define   M_SOF11   0xcb
#define   M_SOF13   0xcd
#define   M_SOF14   0xce
#define   M_SOF15   0xcf
#define   M_DHT     0xc4
#define   M_DAC     0xcc
#define   M_RST0    0xd0
#define   M_RST1    0xd1
#define   M_RST2    0xd2
#define   M_RST3    0xd3
#define   M_RST4    0xd4
#define   M_RST5    0xd5
#define   M_RST6    0xd6
#define   M_RST7    0xd7
#define   M_SOI     0xd8
#define   M_EOI     0xd9
#define   M_SOS     0xda
#define   M_DQT     0xdb
#define   M_DNL     0xdc
#define   M_DRI     0xdd
#define   M_DHP     0xde
#define   M_EXP     0xdf
#define   M_APP0    0xe0
#define   M_APP1    0xe1
#define   M_APP2    0xe2
#define   M_APP3    0xe3
#define   M_APP4    0xe4
#define   M_APP5    0xe5
#define   M_APP6    0xe6
#define   M_APP7    0xe7
#define   M_APP8    0xe8
#define   M_APP9    0xe9
#define   M_APP10   0xea
#define   M_APP11   0xeb
#define   M_APP12   0xec
#define   M_APP13   0xed
#define   M_APP14   0xee
#define   M_APP15   0xef
#define   M_JPG0    0xf0
#define   M_JPG13   0xfd
#define   M_COM     0xfe
#define   M_TEM     0x01
#define   M_ERROR   0x100

#define xaTRUE 1
#define xaFALSE 0

#define JPG_MAX_COMPS 4
#define JPG_DUMMY_COMP (JPG_MAX_COMPS + 1)

#define JJ_INPUT_CHECK(val) ((jpg_bsize >= (val))?(xaTRUE):(xaFALSE))
#define JJ_INPUT_xaBYTE(var) { var = *jpg_buff++; jpg_bsize--; }
#define JJ_INPUT_xaSHORT(var) { var = (*jpg_buff++) << 8; var |= (*jpg_buff++); jpg_bsize -= 2; }

#define JFIF_APP0_LEN 14

#define xaMIN(x,y)   ( ((x)>(y))?(y):(x) )
#define xaMAX(x,y)   ( ((x)>(y))?(x):(y) )
#define xaABS(x)     (((x)<0)?(-(x)):(x))

#endif