/*
?*?File:	exif.cpp
?*?Purpose:	cpp?EXIF?reader
?*?16/Mar/2003?
?*?based?on?jhead-1.8?by?Matthias?Wandel?
?*/

#include?“Exif.h“

////////////////////////////////////////////////////////////////////////////////
Cexif::Cexif（EXIFINFO*?info）
{
	if?（info）?{
		m_exifinfo?=?info;
		freeinfo?=?false;
	}?else?{
		m_exifinfo?=?new?EXIFINFO;
		memset（m_exifinfo0sizeof（EXIFINFO））;
		freeinfo?=?true;
	}

	m_szLastError[0]=‘\0‘;
	ExifImageWidth?=?MotorolaOrder?=?0;
	SectionsRead=0;
	memset（&Sections?0?MAX_SECTIONS?*?sizeof（Section_t））;
}
////////////////////////////////////////////////////////////////////////////////
Cexif::~Cexif（）
{
	for（int?i=0;i	if?（freeinfo）?delete?m_exifinfo;
}
////////////////////////////////////////////////////////////////////////////////
bool?Cexif::DecodeExif（FILE?*?hFile）
{
????int?a;
????int?HaveCom?=?0;

????a?=?fgetc（hFile）;

????if?（a?!=?0xff?||?fgetc（hFile）?!=?M_SOI）{
????????return?0;
????}

????for（;;）{
????????int?itemlen;
????????int?marker?=?0;
????????int?lllh?got;
????????unsigned?char?*?Data;

????????if?（SectionsRead?>=?MAX_SECTIONS）{
			strcpy（m_szLastError“Too?many?sections?in?jpg?file“）;
			return?0;
????????}

????????for?（a=0;a<7;a++）{
????????????marker?=?fgetc（hFile）;
????????????if?（marker?!=?0xff）?break;

????????????if?（a?>=?6）{
????????????????printf（“too?many?padding?unsigned?chars\n“）;
????????????????return?0;
????????????}
????????}

????????if?（marker?==?0xff）{
????????????//?0xff?is?legal?padding?but?if?we?get?that?many?something‘s?wrong.
????????????strcpy（m_szLastError“too?many?padding?unsigned?chars!“）;
			return?0;
????????}

????????Sections[SectionsRead].Type?=?marker;

????????//?Read?the?length?of?the?section.
????????lh?=?fgetc（hFile）;
????????ll?=?fgetc（hFile）;

????????itemlen?=?（lh?<
????????if?（itemlen?????????????strcpy（m_szLastError“invalid?marker“）;
			return?0;
????????}

????????Sections[SectionsRead].Size?=?itemlen;

????????Data?=?（unsigned?char?*）malloc（itemlen）;
????????if?（Data?==?NULL）{
????????????strcpy（m_szLastError“Could?not?allocate?memory“）;
			return?0;
????????}
????????Sections[SectionsRead].Data?=?Data;

????????//?Store?first?two?pre-read?unsigned?chars.
????????Data[0]?=?（unsigned?char）lh;
????????Data[1]?=?（unsigned?char）ll;

????????got?=?fread（Data+2?1?itemlen-2hFile）;?//?Read?the?whole?section.
????????if?（got?!=?itemlen-2）{
????????????strcpy（m_szLastError“Premature?end?of?file?“）;
			return?0;
????????}
????????SectionsRead?+=?1;

????????switch（marker）{

????????????case?M_SOS:???//?stop?before?hitting?compressed?data?
????????????????//?If?reading?entire?image?is?requested?read?the?rest?of?the?data.
????????????????/*if?（ReadMode?&?READ_IMAGE）{
????????????????????int?cp?ep?size;
???????????????

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????27955??2013-01-10?20:45??imageProcess\imageProcess\Exif.cpp

?????文件???????3480??2013-01-10?20:49??imageProcess\imageProcess\Exif.h

?????文件??????43192??2013-01-11?14:13??imageProcess\imageProcess\imageProcess.aps

?????文件???????2241??2013-01-10?18:01??imageProcess\imageProcess\imageProcess.cpp

?????文件????????526??2013-01-10?17:41??imageProcess\imageProcess\imageProcess.h

?????文件???????5627??2013-01-10?20:41??imageProcess\imageProcess\imageProcess.rc

?????文件???????5758??2013-01-10?20:48??imageProcess\imageProcess\imageProcess.vcproj

?????文件???????1427??2013-01-10?20:54??imageProcess\imageProcess\imageProcess.vcproj.LENOVO-B66F6293.user.user

?????文件???????1427??2013-01-22?09:33??imageProcess\imageProcess\imageProcess.vcproj.PC-20130105KLGD.Administrator.user

?????文件??????14539??2013-01-11?09:01??imageProcess\imageProcess\imageProcessDlg.cpp

?????文件????????988??2013-01-10?20:25??imageProcess\imageProcess\imageProcessDlg.h

?????文件???????2912??2013-01-06?15:50??imageProcess\imageProcess\ReadMe.txt

?????文件??????21630??2005-12-08?14:56??imageProcess\imageProcess\res\imageProcess.ico

?????文件????????368??2013-01-06?15:50??imageProcess\imageProcess\res\imageProcess.rc2

?????文件???????1005??2013-01-10?18:09??imageProcess\imageProcess\resource.h

?????文件????????145??2013-01-06?16:47??imageProcess\imageProcess\stdafx.cpp

?????文件???????2520??2013-01-10?20:54??imageProcess\imageProcess\stdafx.h

?????文件????????901??2013-01-06?15:50??imageProcess\imageProcess.sln

????..A..H.?????52224??2013-01-22?09:33??imageProcess\imageProcess.suo

?????文件??????73728??2013-01-22?09:32??imageProcess\release\imageProcess.exe

?????目錄??????????0??2013-01-22?09:30??imageProcess\imageProcess\res

?????目錄??????????0??2013-01-22?09:33??imageProcess\imageProcess

?????目錄??????????0??2013-01-22?09:33??imageProcess\release

?????目錄??????????0??2013-01-22?09:33??imageProcess

-----------?---------??----------?-----??----

???????????????262593????????????????????24