/*
?*?JPEG?decoding?engine?for?DCT-baseline
?*
?*??????copyrights?2003?by?nikq?|?nikq::club.
?*
?*?history::
?*?2003/04/28?|?added?OSASK-GUI?（?by?H.Kawai?）
?*?2003/05/12?|?optimized?DCT?（?20-bits?fixed?point?etc...）?->?line?407-464?（?by?I.Tak.?）
?*?2003/09/27?|?PICTURE0.BIN（DLL）梡偵夵憿?（?by?偔乕傒傫?）
?*?2003/09/28?|?奺庬僶僌僼傿僋僗仌懡彮偺嵟揔壔?（?by?H.Kawai?）
?*
?*/


typedef?unsigned?char?UCHAR;

struct?DLL_STRPICENV?{?int?work[16384];?};

typedef?struct
{
????int?elem;?//梫慺悢
????unsigned?short?code[256];
????unsigned?char??size[256];
????unsigned?char??value[256];
}HUFF;

typedef?struct
{
????//?SOF
????int?width;
????int?height;
????//?MCU
????int?mcu_width;
????int?mcu_height;

????int?max_hmax_v;
????int?compo_count;
????int?compo_id[3];
????int?compo_sample[3];
????int?compo_h[3];
????int?compo_v[3];
????int?compo_qt[3];

????//?SOS
????int?scan_count;
????int?scan_id[3];
????int?scan_ac[3];
????int?scan_dc[3];
????int?scan_h[3];??//?僒儞僾儕儞僌梫慺悢
????int?scan_v[3];??//?僒儞僾儕儞僌梫慺悢
????int?scan_qt[3];?//?検巕壔僥乕僽儖僀儞僨僋僗
????
????//?DRI
????int?interval;

????int?mcu_buf[32*32*4];?//僶僢僼傽
????int?*mcu_yuv[4];
????int?mcu_preDC[3];
????
????//?DQT
????int?dqt[3][64];
????int?n_dqt;
????
????//?DHT
????HUFF?huff[2][3];
????
????
????//?FILE?i/o
	unsigned?char?*fp?*fp1;
????unsigned?long?bit_buff;
????int?bit_remain;
????int?width_buf;

	int?base_img[64][64];?//?婎掙夋憸?（?[墶廃攇悢u兾][廲廃攇悢v兾][墶埵憡（M/8）][廲埵憡（N/8）]

????/*?for?dll?
????
????JPEG?*jpeg?=?（JPEG?*）malloc（sizeof（JPEG）?+?256）;
????*/
????int?dummy[64];
????
}JPEG;

/*?for?16bit?*/
#ifndef?PIXEL16
#define?PIXEL16（r?g?b）	（（r）?<	/*?0?<=?r?<=?31?0?<=?g?<=?63?0?<=?b?<=?31?*/
#endif

int?info_JPEG（struct?DLL_STRPICENV?*env?int?*info?int?size?UCHAR?*fp）;
int?decode0_JPEG（struct?DLL_STRPICENV?*env?int?size?UCHAR?*fp?int?b_type?UCHAR?*buf?int?skip）;

void?jpeg_idct_init（int?base_img[64][64]）;
int?jpeg_init（JPEG?*jpeg）;
//?int?jpeg_header（JPEG?*jpge）;
void?jpeg_decode（JPEG?*jpeg?unsigned?char?*rgbint?b_type）;

/*?-----------------?start?main?section?-----------------?*/

int?info_JPEG（struct?DLL_STRPICENV?*envint?*info?int?size?UCHAR?*fp0）
{
	JPEG?*jpeg?=?（JPEG?*）?（（（int?*）?env）?+?128）;
	jpeg->fp?=?fp0;
	jpeg->fp1?=?fp0?+?size;

//	if?（512?+?sizeof?（JPEG）?>?64?*?1024）
//		return?0;

	if?（jpeg_init（jpeg））
		return?0;
//	jpeg_header（jpeg）;

	if?（jpeg->width?==?0）
		return?0;
	
	info[0]?=?0x0002;
	info[1]?=?0x0000;
	info[2]?=?jpeg->width;
	info[3]?=?jpeg->height;

	/*?OK?*/
	return?1;
}

int?decode0_JPEG（struct?DLL_STRPICENV?*envint?size?UCHAR?*fp0?int?b_type?UCHAR?*buf?int?skip）
{
	JPEG?*jpeg?=?（JPEG?*）?（（（int?*）?env）?+?128）;
	jpeg->fp?=?fp0;
	jpeg->fp1?=?fp0?+?size;

	jpeg_idct_init（jpeg->base_img）;
	jpeg_init（jpeg）;
//	jpeg_header（jpeg）;

//	if?（jpeg->width?==?0）
//		return?8;
	/*?decode0偱偼info偟偰偐傜屇偽傟傞偺偱丄偙傟偼側偄?*/

	jpeg->width_buf?=?skip?/?（b_type?