code_twain/sane/scanner.cpp

#include "scanner.h"

#include <Windows.h>
#include <Shlwapi.h>	// for PathFileExistsW
#include "../sdk/hginclude/huagaoxxx_warraper_ex.h"
#include <sane/sane_option_definitions.h>
#include "../../code_device/hgsane/sane_hg_mdw.h"
#include "sane_option_trans.h"
#include <chrono>
#include <mutex>
#include "DlgIndicator.h"
#include "DlgSetting.h"
#include "gb_json.h"

#pragma comment(lib, "Shlwapi.lib")


static IMPLEMENT_OPTION_STRING_COMPARE(compare_sane_opt);

#define SET_SANE_OPT_ID(id, id_name, name, val, extension)	\
	if(strcmp(SANE_STD_OPT_NAME_##name, val) == 0)			\
	{														\
		id_name##_id_ = id;									\
		extension(id);										\
	}


#ifdef EXPORT_SANE_API
__declspec(dllexport)
#else
__declspec(dllimport)
#endif
void __stdcall log_info(const wchar_t* info, int level);


//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// callback 
extern "C"
{
	extern SANE_Status inner_sane_init(SANE_Int* version_code, SANE_Auth_Callback authorize);
	extern void inner_sane_exit(void);
	extern SANE_Status inner_sane_get_devices(const SANE_Device*** device_list, SANE_Bool local_only);
	extern SANE_Status inner_sane_open(SANE_String_Const devicename, SANE_Handle* handle);
	extern void inner_sane_close(SANE_Handle handle);
	extern const SANE_Option_Descriptor* inner_sane_get_option_descriptor(SANE_Handle handle, SANE_Int option);
	extern SANE_Status inner_sane_control_option(SANE_Handle handle, SANE_Int option, SANE_Action action, void* value, SANE_Int* info);
	extern SANE_Status inner_sane_get_parameters(SANE_Handle handle, SANE_Parameters* params);
	extern SANE_Status inner_sane_start(SANE_Handle handle);
	extern SANE_Status inner_sane_read(SANE_Handle handle, SANE_Byte* data, SANE_Int max_length, SANE_Int* length);
	extern void inner_sane_cancel(SANE_Handle handle);
	extern SANE_Status inner_sane_set_io_mode(SANE_Handle handle, SANE_Bool non_blocking);
	extern SANE_Status inner_sane_get_select_fd(SANE_Handle handle, SANE_Int* fd);
	extern SANE_String_Const inner_sane_strstatus(SANE_Status status);

	extern SANE_Status inner_sane_init_ex(SANE_Int* version_code, sane_callback cb, void* param);
	extern SANE_Status inner_sane_io_control(SANE_Handle h, unsigned long code, void* data, unsigned* len);
	extern const char* inner_sane_err_desc(SANE_Status err);
}

namespace callback
{
	static std::mutex	cb_lock_;
	typedef struct _scanner_inst
	{
		SANE_Handle dev;
		scanner* invoker;

		bool operator==(const SANE_Handle& h)
		{
			return dev == h;
		}
		bool operator==(const scanner* obj)
		{
			return invoker == obj;
		}
	}SCNINST;
	std::vector<SCNINST>	g_scanner_instances;

	int sane_event_callback(        // 注册回调的对象，需要保证该回调是多线程安全的
		SANE_Handle hdev	    // 产生事件的设备句柄
		, int code	    	    // 回调事件代码
		, void* data            // 回调事件数据，根据事件代码有所不同，参照具体事件定义		
		, unsigned int* len     // 数据长度（字节），或者event_data的缓冲区长度，详细请看相应的事件代码
		, void* param 		    // 用户自定义数据，与调用sane_init_ex传入时的保持一致
	)                      // 返回值依不同的事件代码而定，通常为“0”
	{
		std::lock_guard<std::mutex>	lock(cb_lock_);
		std::vector<SCNINST>::iterator it = std::find(g_scanner_instances.begin(), g_scanner_instances.end(), hdev);

		if (it != g_scanner_instances.end())
			return it->invoker->handle_device_event(code, data, len);
		else
		{
			wchar_t	msg[218] = { 0 };
			swprintf_s(msg, _countof(msg) - 1, L"Lost device(0x%08X) when event(%u) occurs!\r\n", hdev, code);
			log_info(msg, 0);

			return 0;
		}
	}
	void reg_callback(SANE_Handle dev, scanner* invoker)
	{
		std::lock_guard<std::mutex>	lock(cb_lock_);
		std::vector<SCNINST>::iterator it = std::find(g_scanner_instances.begin(), g_scanner_instances.end(), dev);
		if (it == g_scanner_instances.end())
		{
			SCNINST	inst;

			inst.dev = dev;
			inst.invoker = invoker;
			g_scanner_instances.push_back(inst);
		}
		else
			it->invoker = invoker;
	}
	void unreg_callback(scanner* invoker)
	{
		std::lock_guard<std::mutex>	lock(cb_lock_);
		std::vector<SCNINST>::iterator it = std::find(g_scanner_instances.begin(), g_scanner_instances.end(), invoker);
		if (it != g_scanner_instances.end())
			g_scanner_instances.erase(it);
	}

	struct
	{
		const char* name;
		const char* title;
	}g_opts[] = { {SANE_STD_OPT_NAME_RESTORE               , OPTION_TITLE_HFMRSZ}
				, {SANE_STD_OPT_NAME_HELP                  , OPTION_TITLE_BZ}
				, {SANE_STD_OPT_NAME_IS_MULTI_OUT          , OPTION_TITLE_DLSC}
				, {SANE_STD_OPT_NAME_MULTI_OUT_TYPE        , OPTION_TITLE_DLSCLX}
				, {SANE_STD_OPT_NAME_COLOR_MODE				, OPTION_TITLE_YSMS}
				, {SANE_STD_OPT_NAME_BINARY_THRESHOLD      , OPTION_TITLE_HBTXYZ}
				, {SANE_STD_OPT_NAME_REVERSE_01				, OPTION_TITLE_HBTXFSSC}
				, {SANE_STD_OPT_NAME_FILTER                , OPTION_TITLE_HDHHBTX_CSYZQ}
				, {SANE_STD_OPT_NAME_RID_MULTIOUT_RED      , OPTION_TITLE_24WCSTX_DLSCCH}
				, {SANE_STD_OPT_NAME_RID_ANSWER_SHEET_RED  , OPTION_TITLE_24WCSTX_DTKCH}
				, {SANE_STD_OPT_NAME_ERASE_BACKGROUND      , OPTION_TITLE_BJYC}
				, {SANE_STD_OPT_NAME_BKG_COLOR_RANGE       , OPTION_TITLE_BJSCFDFW}
				, {SANE_STD_OPT_NAME_SHARPEN               , OPTION_TITLE_RHYMH}
				, {SANE_STD_OPT_NAME_RID_MORR              , OPTION_TITLE_QCMW}
				, {SANE_STD_OPT_NAME_RID_GRID              , OPTION_TITLE_CWW}
				, {SANE_STD_OPT_NAME_ERROR_EXTENSION       , OPTION_TITLE_CWKS}
				, {SANE_STD_OPT_NAME_NOISE_OPTIMIZE        , OPTION_TITLE_HBTXZDYH}
				, {SANE_STD_OPT_NAME_NOISE_SIZE            , OPTION_TITLE_ZDYHCC}
				, {SANE_STD_OPT_NAME_PAPER                 , OPTION_TITLE_ZZCC}
				, {SANE_STD_OPT_NAME_CUSTOM_AREA           , OPTION_TITLE_ZDYSMQY}
				, {SANE_STD_OPT_NAME_CUSTOM_AREA_LEFT      , OPTION_TITLE_SMQYZCmm}
				, {SANE_STD_OPT_NAME_CUSTOM_AREA_RIGHT     , OPTION_TITLE_SMQYYCmm}
				, {SANE_STD_OPT_NAME_CUSTOM_AREA_TOP       , OPTION_TITLE_SMQYSCmm}
				, {SANE_STD_OPT_NAME_CUSTOM_AREA_BOTTOM    , OPTION_TITLE_SMQYXCmm}
				, {SANE_STD_OPT_NAME_SIZE_CHECK            , OPTION_TITLE_CCJC}
				, {SANE_STD_OPT_NAME_PAGE	               , OPTION_TITLE_SMYM}
				, {SANE_STD_OPT_NAME_DISCARD_BLANK_SENS    , OPTION_TITLE_TGKBYLMD}
				, {SANE_STD_OPT_NAME_RESOLUTION            , OPTION_TITLE_FBL}
				, {SANE_STD_OPT_NAME_TIME_TO_SLEEP         , OPTION_TITLE_XMSJ}
				, {SANE_STD_OPT_NAME_IMAGE_QUALITY         , OPTION_TITLE_HZ}
				, {SANE_STD_OPT_NAME_EXCHANGE				,OPTION_TITLE_JHZFM}
				, {SANE_STD_OPT_NAME_SPLIT					,OPTION_TITLE_TXCF   }
				, {SANE_STD_OPT_NAME_ANTI_SKEW             , OPTION_TITLE_ZDJP}
				, {SANE_STD_OPT_NAME_IS_CUSTOM_GAMMA       , OPTION_TITLE_QYSDQX}
				, {SANE_STD_OPT_NAME_GAMMA                 , OPTION_TITLE_JMZ}
				, {SANE_STD_OPT_NAME_BRIGHTNESS            , OPTION_TITLE_LDZ}
				, {SANE_STD_OPT_NAME_CONTRAST              , OPTION_TITLE_DBD}
				, {SANE_STD_OPT_NAME_IS_PHOTO_MODE         , OPTION_TITLE_ZPMS}
				, {SANE_STD_OPT_NAME_ERASE_BLACK_FRAME     , OPTION_TITLE_XCHK}
				, {SANE_STD_OPT_NAME_DARK_SAMPLE           , OPTION_TITLE_SSYZ}
				, {SANE_STD_OPT_NAME_THRESHOLD             , OPTION_TITLE_YZ}
				, {SANE_STD_OPT_NAME_ANTI_NOISE_LEVEL      , OPTION_TITLE_BJKZDJ}
				, {SANE_STD_OPT_NAME_MARGIN                , OPTION_TITLE_BYSJ}
				, {SANE_STD_OPT_NAME_FILL_BKG_MODE         , OPTION_TITLE_BJTCFS}
				, {SANE_STD_OPT_NAME_IS_ANTI_PERMEATE      , OPTION_TITLE_FZST}
				, {SANE_STD_OPT_NAME_ANTI_PERMEATE_LEVEL   , OPTION_TITLE_FZSTDJ}
				, {SANE_STD_OPT_NAME_RID_HOLE_L            , OPTION_TITLE_CKYCZC}
				, {SANE_STD_OPT_NAME_SEARCH_HOLE_RANGE_L   , OPTION_TITLE_ZCCKSSFWZFMBL}
				, {SANE_STD_OPT_NAME_RID_HOLE_R            , OPTION_TITLE_CKYCYC}
				, {SANE_STD_OPT_NAME_SEARCH_HOLE_RANGE_R   , OPTION_TITLE_YCCKSSFWZFMBL}
				, {SANE_STD_OPT_NAME_RID_HOLE_T            , OPTION_TITLE_CKYCSC}
				, {SANE_STD_OPT_NAME_SEARCH_HOLE_RANGE_T   , OPTION_TITLE_SCCKSSFWZFMBL}
				, {SANE_STD_OPT_NAME_RID_HOLE_B            , OPTION_TITLE_CKYCXC}
				, {SANE_STD_OPT_NAME_SEARCH_HOLE_RANGE_B   , OPTION_TITLE_XCCKSSFWZFMBL}
				, {SANE_STD_OPT_NAME_IS_FILL_COLOR         , OPTION_TITLE_SCTC}
				, {SANE_STD_OPT_NAME_IS_ULTROSONIC_CHECK   , OPTION_TITLE_CSBJC}
				, {SANE_STD_OPT_NAME_DOUBLE_FEED_HANDLE    , OPTION_TITLE_SZTPCL}
				, {SANE_STD_OPT_NAME_IS_CHECK_STAPLE       , OPTION_TITLE_ZDJC}
				, {SANE_STD_OPT_NAME_SCAN_MODE             , OPTION_TITLE_SMZS}
				, {SANE_STD_OPT_NAME_SCAN_COUNT            , OPTION_TITLE_SMSL}
				, {SANE_STD_OPT_NAME_TEXT_DIRECTION        , OPTION_TITLE_WGFX}
				, {SANE_STD_OPT_NAME_IS_ROTATE_BKG_180     , OPTION_TITLE_BMXZ180}
				, {SANE_STD_OPT_NAME_IS_CHECK_DOG_EAR      , OPTION_TITLE_ZJJC}
				, {SANE_STD_OPT_NAME_DOG_EAR_SIZE          , OPTION_TITLE_ZJDX}
				, {SANE_STD_OPT_NAME_IS_CHECK_ASKEW        , OPTION_TITLE_WXJC}
				, {SANE_STD_OPT_NAME_ASKEW_RANGE           , OPTION_TITLE_WXRRD}
				, {SANE_STD_OPT_NAME_FEED_STRENGTH         , OPTION_TITLE_FZQD}
				, {SANE_STD_OPT_NAME_IS_AUTO_FEED_STRENGTH , OPTION_TITLE_ZDFZQD}
				, {SANE_STD_OPT_NAME_FEED_STRENGTH_VALUE   , OPTION_TITLE_JZSBL}
				, {SANE_STD_OPT_NAME_WAIT_TO_SCAN          , OPTION_TITLE_DZSM}
	},
		g_discard[] = { {SANE_STD_OPT_NAME_REVERSE_01		   , "\351\273\221\347\231\275\345\233\276\345\203\217\345\217\215\350\211\262\350\276\223\345\207\272\357\274\210\346\255\243\345\270\270\351\242\234\350\211\262\344\270\272\357\274\2320-\351\273\221\350\211\262\357\274\2331-\347\231\275\350\211\262\357\274\211"}	// 黑白图像反色输出（正常颜色为：0-黑色；1-白色）
					,   {SANE_STD_OPT_NAME_FILTER              , "\347\201\260\345\272\246\346\210\226\351\273\221\347\231\275\345\233\276\345\203\217 - \351\231\244\350\211\262"}																																						// 灰度或黑白图像 - 除色
					, {SANE_STD_OPT_NAME_IS_AUTO_FEED_STRENGTH , "\350\207\252\345\212\250\346\220\223\347\272\270\345\274\272\345\272\246"}																																															// 自动搓纸强度
					,   {SANE_STD_OPT_NAME_FEED_STRENGTH_VALUE , "\346\220\223\347\272\270\351\230\210\345\200\274"}																																																					// "   搓纸阈值"
	};
	const char* option_title_2_name(const char* title)
	{
		while (*title == ' ')
			title++;

		for (size_t i = 0; i < _countof(g_discard); ++i)
		{
			if (strcmp(title, g_discard[i].title) == 0)
				return g_discard[i].name;
		}
		for (size_t i = 0; i < _countof(g_opts); ++i)
		{
			if (strcmp(title, g_opts[i].title) == 0)
				return g_opts[i].name;
		}

		return "";
	}
	const char* __stdcall option_name_2_title(const char* name)
	{
		for (size_t i = 0; i < _countof(g_opts); ++i)
		{
			if (strcmp(name, g_opts[i].name) == 0)
				return g_opts[i].title;
		}

		return "";
	}

	static BOOL CALLBACK main_wnd(HWND hwnd, LPARAM param)
	{
		DWORD	pid = 0;

		GetWindowThreadProcessId(hwnd, &pid);
		if (pid != GetCurrentProcessId())
			return TRUE;

		if (((void**)param)[1] == NULL)
		{
			HWND parent = GetParent(hwnd);
			while (IsWindow(parent))
			{
				hwnd = parent;
				parent = GetParent(hwnd);
			}
			parent = hwnd;
			if (!IsWindowVisible(parent))
				return TRUE;

			RECT	r = { 0 };
			GetWindowRect(parent, &r);
			if (RECT_H(r) > 50 && RECT_W(r) > 50)
			{
				*(HWND*)param = parent;

				return FALSE;
			}
		}
		else
		{
			wchar_t	val[128] = { 0 };
			GetClassNameW(hwnd, val, _countof(val) - 1);
			if (wcscmp(val, L"#32770"))
				return TRUE;

			GetWindowTextW(hwnd, val, _countof(val) - 1);
			if (*((std::wstring**)param)[1] == val)
			{
				*(HWND*)param = hwnd;

				return FALSE;
			}
		}

		return TRUE;
	}
	static HWND find_main_wnd(void)
	{
		HWND wnd[2] = { NULL };

		EnumWindows(main_wnd, (LPARAM)wnd);

		return wnd[0];
	}
	static DWORD WINAPI btm(LPVOID para)
	{
		std::wstring* title[2] = { NULL, (std::wstring*)para };

		Sleep(100);
		EnumWindows(main_wnd, (LPARAM)title);
		if (IsWindow((HWND)title[0]))
		{
			RECT	r = { 0 };
			GetWindowRect((HWND)title[0], &r);
			SetWindowPos((HWND)title[0], HWND_TOPMOST, r.left, r.top, RECT_W(r), RECT_H(r), SWP_SHOWWINDOW | SWP_NOSENDCHANGING);
			SetFocus((HWND)title[0]);
		}

		delete title[1];

		return 0;
	}
	static void bring_message_box_topmost(const wchar_t* title)
	{
		DWORD	id = 0;
		std::wstring* t(new std::wstring(title));
		HANDLE	h = CreateThread(NULL, 0, btm, t, 0, &id);

		if (h)
			CloseHandle(h);
		else
			delete t;
	}
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// class scanner
scanner::scanner(SCANNERID id) : handle_(NULL), id_(id), ex_id_(EXTENSION_ID_BASE), prev_start_result_(SCANNER_ERR_NOT_START)
								, dpi_(200), tmp_path_(L""), img_ind_(0)
								, scanner_name_(L""), cfg_(NULL), is_ui_wait_img_(false), is_scanning_(false)
								, scanner_ev_handler_(NULL), evh_param_(NULL), app_wnd_(NULL)
{
	cfg_ = new gb::sane_config_schm();
	tmp_path_ = local_trans::a2u(hg_sane_middleware::sane_path().c_str());
	{
		char* tmp = getenv("LOCALAPPDATA");

		if (tmp)
		{
			tmp_path_ = local_trans::a2u(tmp) + L"\\";
			tmp_path_ += local_trans::a2u(PRODUCT_VENDOR) + L"Scan\\";
			CreateDirectoryW(tmp_path_.c_str(), NULL);
		}
	}
	cfg_path_ = tmp_path_ + L"config";
	CreateDirectoryW(cfg_path_.c_str(), NULL);
	cfg_path_ += L"\\";
	tmp_path_ += L"imgs";
	CreateDirectoryW(tmp_path_.c_str(), NULL);
	tmp_path_ += L"\\";
	img_fmt_.img_format = SANE_IMAGE_TYPE_BMP;
	img_fmt_.compress.compression = SANE_COMPRESSION_NONE;

	err_ = open();
}
scanner::~scanner()
{
	close();
	if (cfg_)
	{
		cfg_->release();
		cfg_ = NULL;
	}
}

bool scanner::is_belong_serial(int vid, int pid, SCANNERID serial)
{
	if (vid == PRODUCT_VENDOR_HG)
	{
		if (GET_SCANNER_VID(serial) == PRODUCT_VENDOR_HG)
		{
			if (GET_SCANNER_PID(serial) == 0x100)
			{
				return pid == 0x100 || pid == 0x139 ;
			}
			else if (GET_SCANNER_PID(serial) == 0x200)
			{
				return pid == 0x200 || pid == 0x239;
			}
			else if (GET_SCANNER_PID(serial) == 0x300)
			{
				return pid == 0x300 || pid == 0x302 || pid == 0x339;
			}
			else if (GET_SCANNER_PID(serial) == 0x400)
			{
				return pid == 0x400 || pid == 0x402 || pid == 0x439;
			}
		}
	}
	else if (vid == PRODUCT_VENDOR_HG1)
	{
		return pid == 0x7823 && GET_SCANNER_VID(serial) == PRODUCT_VENDOR_HG && GET_SCANNER_PID(serial) == 0x200;
	}
	else if (vid == PRODUCT_VENDOR_HW)
	{
		return GET_SCANNER_VID(serial) == vid && GET_SCANNER_PID(serial) == pid;
	}
	else if (vid == PRODUCT_VENDOR_LSC)
	{
		if (GET_SCANNER_VID(serial) == PRODUCT_VENDOR_LSC)
		{
			if (GET_SCANNER_PID(serial) == 0x8420)
			{
				return pid == 0x8200 || pid == 0x8420 || pid == 0x8429;
			}
			else if (GET_SCANNER_PID(serial) == 0x8520)
			{
				return pid == 0x8520 || pid == 0x8529;
			}
			else if (GET_SCANNER_PID(serial) == 0x8620)
			{
				return pid == 0x8620 || pid == 0x8629;
			}
			else if (GET_SCANNER_PID(serial) == 0x8730)
			{
				return pid == 0x8730 || pid == 0x8739;
			}
		}
	}

	return false;
}
void scanner::get_scanner_name(SCANNERID id, std::vector<std::string>& names)
{
	ScannerInfo* devs = NULL;
	long		count = 0;

	names.clear();
	if (hg_scanner_enum(devs, &count, true) == SCANNER_ERR_INSUFFICIENT_MEMORY)
	{
		count++;
		devs = new ScannerInfo[count];
		memset(devs, 0, count * sizeof(*devs));
		if (hg_scanner_enum(devs, &count, true) == SCANNER_ERR_OK)
		{
			for (int i = 0; i < count; ++i)
			{
				if (scanner::is_belong_serial(devs[i].vid, devs[i].pid, id))
				{
					names.push_back(devs[i].name);
				}
			}
		}
		delete[] devs;
	}
}
value_type scanner::from_sane_type(SANE_Value_Type type)
{
	if (type == SANE_TYPE_BOOL)
		return VAL_TYPE_BOOL;
	else if (type == SANE_TYPE_INT)
		return VAL_TYPE_INT;
	else if (type == SANE_TYPE_FIXED)
		return VAL_TYPE_FLOAT;
	else if (type == SANE_TYPE_STRING)
		return VAL_TYPE_STR;
	else
		return VAL_TYPE_NONE;
}
value_limit scanner::from_sane_constraint(SANE_Constraint_Type type)
{
	if (type == SANE_CONSTRAINT_RANGE)
		return VAL_LIMIT_RANGE;
	else if (type == SANE_CONSTRAINT_STRING_LIST || type == SANE_CONSTRAINT_WORD_LIST)
		return VAL_LIMIT_ENUM;
	else
		return VAL_LIMIT_NONE;
}
int scanner::control_read_string(SANE_Handle hdev, int code, std::string& str)
{
	char* buf = NULL;
	unsigned len = 0;
	int err = hg_sane_middleware::instance()->io_control(hdev, code, buf, &len);

	str = "";
	if (err == SANE_STATUS_NO_MEM)
	{
		len += 4;
		buf = new char[len];
		memset(buf, 0, len);
		err = hg_sane_middleware::instance()->io_control(hdev, code, buf, &len);
		if (err == SANE_STATUS_GOOD)
			str = buf;
		delete[] buf;
	}

	return err;
}

int __stdcall scanner::to_int(SANE_Int v)
{
	return v;
}
float __stdcall scanner::to_float(SANE_Fixed v)
{
	return (float)SANE_UNFIX(v);
}
void __stdcall scanner::ui_callback(int uev, void* sender, void* param)
{
	((scanner*)param)->on_ui_event(uev, sender);
}
bool scanner::is_option_float(int sn, void* param)
{
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor((SANE_Handle)param, sn);

	if (desc)
		return desc->type == SANE_TYPE_FIXED;
	else
		return false;
}

// IRef
COM_API_IMPLEMENT(scanner, long, add_ref(void))
{
	return refer::add_ref();
}
COM_API_IMPLEMENT(scanner, long, release(void))
{
	return refer::release();
}

void scanner::transport_config_file(void)
{
	size_t pos = scanner_name_.find(L" - ");
	std::wstring	pid(L"G"), old(L"");

	if (pos == std::wstring::npos)
		return;

	pid += scanner_name_.substr(pos + 3);
	if (scanner_name_.find(L"HUAGOSCAN ") != std::wstring::npos)
	{
		old = local_trans::a2u("\345\215\216\351\253\230\346\211\253\346\217\217\344\273\252\342\200\224", CP_UTF8);
	}
	else if (scanner_name_.find(L"LANXUMSCAN ") != std::wstring::npos)
	{
		old = local_trans::a2u("\347\253\213\346\200\235\350\276\260\346\211\253\346\217\217\344\273\252\342\200\224", CP_UTF8);
		pid += L"S";
	}
	old += pid;
	if (PathFileExistsW((cfg_path_ + old).c_str()))
	{
		log_info((L"Rename config file '" + old + L"' to '" + scanner_name_.substr(0, pos) + L"'\r\n").c_str(), 0);
		MoveFileW((cfg_path_ + old).c_str(), (cfg_path_ + scanner_name_.substr(0, pos)).c_str());
	}
}
void scanner::update_config(void)
{
	std::string	notice("");
	cfg_->update(&scanner::is_option_float, handle_, &callback::option_title_2_name, &notice);
	if (notice.length())
	{
		std::wstring	msg(L"\u4E0B\u5217\u914D\u7F6E\u6570\u636E\u9519\u8BEF\uFF0C\u5DF2\u7ECF\u6062\u590D\u5230\u9ED8\u8BA4\u503C\u3002\u5982\u679C\u9700\u8981\uFF0C\u8BF7\u91CD\u65B0\u8BBE\u7F6E\uFF1A\r\n\r\n");
		size_t			pos = notice.find("\r\n");

		while (pos != std::string::npos)
		{
			msg += local_trans::a2u(callback::option_name_2_title(notice.substr(0, pos).c_str()), CP_UTF8) + L"\r\n";
			notice.erase(0, pos + 2);
			pos = notice.find("\r\n");
		}
		if (!IsWindow(app_wnd_))
			callback::bring_message_box_topmost(L"\u52A0\u8F7D\u914D\u7F6E");
		MessageBoxW(app_wnd_, msg.c_str(), L"\u52A0\u8F7D\u914D\u7F6E", MB_OK | MB_ICONINFORMATION);
	}
}
void scanner::load_config(const wchar_t* file)
{
	cfg_->load_from_file(local_trans::u2a(file).c_str());
	update_config();
}
void scanner::save_config(const wchar_t* file)
{
	cfg_->save_to(local_trans::u2a(file).c_str());
}
void scanner::apply_config(void)
{
	std::string	n(""), v(""), ver(cfg_->get_version());

	if (cfg_->first_config(n, v))
	{
		do
		{
			int	id = cfg_->id_from_name(n.c_str());
			if (id == -1)
			{
				if (gb::sane_config_schm::is_option_data(n))
				{
					id = cfg_->id_from_name(n.c_str());
					if (id == is_custom_gamma_id_)
					{
						if (v.length() == sizeof(SANE_Gamma))
						{
							unsigned int l = v.length();
							hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_SET_CUSTOM_GAMMA, &v[0], &l);
						}
						else
						{
							wchar_t	info[128] = { 0 };
							swprintf_s(info, _countof(info) - 1, L"ERROR: custom gamma data length is %u, but we expect %u.\r\n", v.length(), sizeof(SANE_Gamma));
							log_info(info, 0);
						}
					}
				}
			}
			else
			{
				void* data = &v[0];
				SANE_Fixed	fixed = 0;
				const SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, id);
				if (desc)
				{
					char*		buf = NULL;
					SANE_Int	after = 0;

					if (desc->type == SANE_TYPE_STRING)
					{
						buf = new char[desc->size + 4];
						memset(buf, 0, desc->size + 4);
						strcpy(buf, v.c_str());
						data = buf;
					}
					hg_sane_middleware::instance()->set_option(handle_, id, SANE_ACTION_SET_VALUE, data, &after);

					if (buf)
						delete[] buf;
				}
			}
		} while (cfg_->next_config(n, v));
	}
}
void scanner::on_ui_event(int uev, void* sender)
{
	bool indicator = sender == indicator_.get();
	if (uev == SANE_EVENT_SCAN_FINISHED || uev == SANE_EVENT_UI_CLOSE_NORMAL || uev == SANE_EVENT_UI_CLOSE_CANCEL)
	{
		if (indicator)
			indicator_.reset();

		if (err_ && setting_.get())
		{
			return;
		}
		is_scanning_ = false;
	}

	int(__stdcall * h)(int, void*) = scanner_ev_handler_;
	if (h)
	{
		if (SANE_EVENT_UI_CLOSE_SETTING == uev)
		{
			is_scanning_ = false;
			setting_.reset();
		}

		h(uev, evh_param_);
		return;
	}

	if (prev_start_result_ != SANE_STATUS_GOOD && indicator)
		indicator_.reset();
	else
	{
		if (uev == SANE_EVENT_UI_SCAN_COMMAND)
		{
			ui_show_progress(NULL);
			start();
			return;
		}

		if (/*events_.count() > 5 && !is_ui_wait_img_ &&*/
			(uev == SANE_EVENT_UI_CLOSE_CANCEL || uev == SANE_EVENT_UI_CLOSE_NORMAL || uev == SANE_EVENT_UI_CLOSE_SETTING))
		{
			events_.clear();
			ui_hide();
			if(indicator || !indicator_.get())
				uev = SANE_EVENT_SCAN_FINISHED;
			else
				uev = SANE_EVENT_UI_CLOSE_SETTING;
		}

		events_.save(uev);
	}
}
std::string scanner::choose_scanner(const std::vector<std::string>& scanners)
{
	if (scanners.empty())
		return "";

	std::map<std::string, std::string>	devs;
	std::string	sel("");

	for (size_t i = 0; i < scanners.size(); ++i)
	{
		SANE_Handle	h = NULL;
		int			ret = hg_sane_middleware::instance()->open_device(scanners[i].c_str(), &h);

		if (h)
		{
			std::string	sn("");
			scanner::control_read_string(h, IO_CTRL_CODE_GET_SERIAL, sn);
			if (sn.length())
				devs[scanners[i]] = sn;
			hg_sane_middleware::instance()->close_device(h);
		}
	}

	if (devs.size() == 0)
		sel = scanners[0];
	else if (devs.size() == 1)
		sel = devs.begin()->first;
	else
	{
		dlg_choose_dev	dlg(NULL, devs);
		dlg.show(true, true);
		sel = dlg.get_selected_device();
	}

	return sel;
}
int scanner::open(void)
{
	int			ret = close();
	std::vector<std::string>	que;
	std::string					name("");

	scanner::get_scanner_name(id_, que);

	scanner_name_ = L"";
	if (que.empty())
		return SCANNER_ERR_DEVICE_NOT_FOUND;

	if (que.size() == 1)
		name = que[0];
	else
	{
		name = choose_scanner(que);
		if (name.empty())
			return SCANNER_ERR_USER_CANCELED;
	}

	ret = hg_sane_middleware::instance()->open_device(name.c_str(), &handle_);
	if (ret == SANE_STATUS_GOOD)
	{
		size_t	pid = -1;

		transport_config_file();
		callback::reg_callback(handle_, this);
		scanner_name_ = local_trans::a2u(name.c_str(), CP_UTF8);
		pid = scanner_name_.find(L" - ");
		if (pid == -1)
			pid = scanner_name_.length();
		ret = init_options_id();
		load_config((cfg_path_ + scanner_name_.substr(0, pid) + L".cfg").c_str());
		apply_config();
	}
	else
	{
		std::wstring	msg(local_trans::a2u(hg_scanner_err_description(ret), CP_UTF8));
		HWND			parent = callback::find_main_wnd();

		if (!IsWindow(parent))
			callback::bring_message_box_topmost(L"\u6253\u5F00\u5931\u8D25");
		MessageBoxW(parent, msg.c_str(), L"\u6253\u5F00\u5931\u8D25", MB_OK | MB_ICONERROR);
	}

	return ret;
}
int scanner::close(void)
{
	scanner_ev_handler_ = NULL;
	ui_hide();
	callback::unreg_callback(this);
	if (handle_)
	{
		hg_sane_middleware::instance()->close_device(handle_);
	}
	handle_ = NULL;
	ex_id_ = EXTENSION_ID_BASE;

	return SCANNER_ERR_OK;
}
int scanner::init_options_id(void)
{
	SANE_Int op_id = 1;
	const SANE_Option_Descriptor* desc = NULL;
	int ret = SCANNER_ERR_OK;

#define SET_OPT_ID(var, predef, func)	\
	SET_SANE_OPT_ID(op_id, var, predef, desc->name, func)

	while ((desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, op_id)))
	{
		void* val = hg_sane_middleware::instance()->get_def_value(handle_, op_id, NULL, true);
		if (val)
		{
			size_t	len = 0;
			switch (desc->type)
			{
			case SANE_TYPE_BOOL:
				len = sizeof(SANE_Bool);
				break;
			case SANE_TYPE_INT:
				len = sizeof(SANE_Int);
				break;
			case SANE_TYPE_FIXED:
				len = sizeof(SANE_Fixed);
				break;
			case SANE_TYPE_STRING:
				len = lstrlenA((char*)val);
				break;
			default:
				break;
			}
			if (len)
				cfg_->set_default_value(op_id, desc->name, (char*)val, len);
			local_utility::free_memory(val);
		}

		SET_OPT_ID(is_multiout, IS_MULTI_OUT, extension_none)
		else SET_OPT_ID(multiout_type, MULTI_OUT_TYPE, extension_multiout_type)
		else SET_OPT_ID(color_mode, COLOR_MODE, extension_color_mode)
		else SET_OPT_ID(erase_color, FILTER, extension_erase_color)
		else SET_OPT_ID(erase_multiout_red, RID_MULTIOUT_RED, extension_none)
		else SET_OPT_ID(erase_paper_red, RID_ANSWER_SHEET_RED, extension_none)
		else SET_OPT_ID(is_erase_background, ERASE_BACKGROUND, extension_none)
		else SET_OPT_ID(background_color_range, BKG_COLOR_RANGE, extension_none)
		else SET_OPT_ID(sharpen, SHARPEN, extension_sharpen)
		else SET_OPT_ID(erase_morr, RID_MORR, extension_none)
		else SET_OPT_ID(erase_grids, RID_GRID, extension_none)
		else SET_OPT_ID(error_extend, ERROR_EXTENSION, extension_none)
		else SET_OPT_ID(is_noise_modify, NOISE_OPTIMIZE, extension_none)
		else SET_OPT_ID(noise_threshold, NOISE_SIZE, extension_none)
		else SET_OPT_ID(paper, PAPER, extension_paper)
		else SET_OPT_ID(is_custom_area, CUSTOM_AREA, extension_none)
		else SET_OPT_ID(curstom_area_l, CUSTOM_AREA_LEFT, extension_none)
		else SET_OPT_ID(curstom_area_r, CUSTOM_AREA_RIGHT, extension_none)
		else SET_OPT_ID(curstom_area_t, CUSTOM_AREA_TOP, extension_none)
		else SET_OPT_ID(curstom_area_b, CUSTOM_AREA_BOTTOM, extension_none)
		else SET_OPT_ID(is_size_check, SIZE_CHECK, extension_none)
		else SET_OPT_ID(page, PAGE, extension_page)
		else SET_OPT_ID(blank_page_threshold, DISCARD_BLANK_SENS, extension_none)
		else SET_OPT_ID(resolution, RESOLUTION, extension_none)
		else SET_OPT_ID(image_quality, IMAGE_QUALITY, extension_none)
		else SET_OPT_ID(is_swap, EXCHANGE, extension_none)
		else SET_OPT_ID(is_split, SPLIT, extension_none)
		else SET_OPT_ID(is_auto_deskew, ANTI_SKEW, extension_none)
		else SET_OPT_ID(is_custom_gamma, IS_CUSTOM_GAMMA, extension_none)
		else SET_OPT_ID(bright, BRIGHTNESS, extension_none)
		else SET_OPT_ID(contrast, CONTRAST, extension_none)
		else SET_OPT_ID(gamma, GAMMA, extension_none)
		else SET_OPT_ID(is_erase_black_frame, ERASE_BLACK_FRAME, extension_none)
		else SET_OPT_ID(deep_sample, DARK_SAMPLE, extension_none)
		else SET_OPT_ID(threshold, THRESHOLD, extension_none)
		else SET_OPT_ID(anti_noise, ANTI_NOISE_LEVEL, extension_none)
		else SET_OPT_ID(margin, MARGIN, extension_none)
		else SET_OPT_ID(fill_background, FILL_BKG_MODE, extension_fill_bkg_method)
		else SET_OPT_ID(is_anti_permeate, IS_ANTI_PERMEATE, extension_none)
		else SET_OPT_ID(anti_permeate_level, ANTI_PERMEATE_LEVEL, extension_none)
		else SET_OPT_ID(is_erase_hole, RID_HOLE, extension_none)
		else SET_OPT_ID(search_hole_range, SEARCH_HOLE_RANGE, extension_none)
		else SET_OPT_ID(is_filling_color, IS_FILL_COLOR, extension_none)
		else SET_OPT_ID(is_ultrasonic_check, IS_ULTROSONIC_CHECK, extension_none)
		else SET_OPT_ID(is_check_staple, IS_CHECK_STAPLE, extension_none)
		else SET_OPT_ID(scan_mode, SCAN_MODE, extension_none)
		else SET_OPT_ID(scan_count, SCAN_COUNT, extension_none)
		else SET_OPT_ID(text_direction, TEXT_DIRECTION, extension_text_direction)
		else SET_OPT_ID(is_rotate_bkg180, IS_ROTATE_BKG_180, extension_none)
		else SET_OPT_ID(is_check_dogear, IS_CHECK_DOG_EAR, extension_none)
		else SET_OPT_ID(dogear_size, DOG_EAR_SIZE, extension_none)
		else SET_OPT_ID(is_check_skew, IS_CHECK_ASKEW, extension_none)
		else SET_OPT_ID(skew_range, ASKEW_RANGE, extension_none)
		else SET_OPT_ID(black_white_threshold, BINARY_THRESHOLD, extension_none)
		else SET_OPT_ID(is_photo_mode, IS_PHOTO_MODE, extension_none)
		else SET_OPT_ID(double_feed_handle, DOUBLE_FEED_HANDLE, extension_none)
		else SET_OPT_ID(scan_when_paper_on, WAIT_TO_SCAN, extension_none)
		else SET_OPT_ID(feed_strength, FEED_STRENGTH, extension_none)
		else SET_OPT_ID(power_scheme, TIME_TO_SLEEP, extension_none)
		else SET_OPT_ID(is_auto_strength, IS_AUTO_FEED_STRENGTH, extension_none)
		else SET_OPT_ID(feed_strength_value , FEED_STRENGTH_VALUE, extension_none)
		else SET_OPT_ID(is_reverse_bw, REVERSE_01, extension_none)
		else SET_OPT_ID(is_erase_hole_l, RID_HOLE_L, extension_none)
		else SET_OPT_ID(search_hole_range_l, SEARCH_HOLE_RANGE_L, extension_none)
		else SET_OPT_ID(is_erase_hole_r, RID_HOLE_R, extension_none)
		else SET_OPT_ID(search_hole_range_r, SEARCH_HOLE_RANGE_R, extension_none)
		else SET_OPT_ID(is_erase_hole_t, RID_HOLE_T, extension_none)
		else SET_OPT_ID(search_hole_range_t, SEARCH_HOLE_RANGE_T, extension_none)
		else SET_OPT_ID(is_erase_hole_b, RID_HOLE_B, extension_none)
		else SET_OPT_ID(search_hole_range_b, SEARCH_HOLE_RANGE_B, extension_none)
		else SET_OPT_ID(fold_direction, FOLD_TYPE, extension_none)
		op_id++;
	}

#define EX_APPENDIX_API(name)					\
	{											\
		EXAPI	ea;								\
		ea.ind = ex_##name##_id_ = ex_id_++;	\
		ea.ex_api = &scanner::handle_ex_##name;	\
		ex_opts_.push_back(ea);					\
	}
	EX_APPENDIX_API(final_compression);
	EX_APPENDIX_API(final_format);
	EX_APPENDIX_API(serial);
	EX_APPENDIX_API(to_be_scan);
	EX_APPENDIX_API(scan_with_hole);
	EX_APPENDIX_API(device_code);
	EX_APPENDIX_API(power);
	EX_APPENDIX_API(hardware_version);
	EX_APPENDIX_API(ip);

	if (black_white_threshold_id_ == -1)
		black_white_threshold_id_ = 0x8836;

	if (is_erase_hole_id_ == -1)
	{
		// 兼容老的除孔算法
		EXAPI	ea;

		ea.ind = is_erase_hole_id_ = ex_id_++;
		ea.base_ind = is_erase_hole_l_id_;
		ea.ex_api = &scanner::handle_ex_erase_hole;
		ex_opts_.push_back(ea);

		ea.ind = search_hole_range_id_ = ex_id_++;
		ea.base_ind = search_hole_range_l_id_;
		ea.ex_api = &scanner::handle_ex_search_hole_range;
		ex_opts_.push_back(ea);
	}

	return ret;
}
int scanner::control_read_string(int code, std::string& ret)
{
	return scanner::control_read_string(handle_, code, ret);
}

void scanner::extension_none(int id)
{
}
void scanner::extension_multiout_type(int id)
{
	EXAPI	ea;

	ex_multiout_type_id_ = ex_id_++;
	ea.ind = ex_multiout_type_id_;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_multiout;

	ex_opts_.push_back(ea);
}
void scanner::extension_color_mode(int id)
{
	EXAPI	ea;

	ea.ind = ex_color_mode_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_color_mode;
	ex_opts_.push_back(ea);

	ex_auto_color_type_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ind = ex_auto_color_type_id_;
	ea.ex_api = &scanner::handle_ex_auto_color_type;
	ex_opts_.push_back(ea);
}
void scanner::extension_sharpen(int id)
{
	EXAPI	ea;

	ex_sharpen_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ind = ex_sharpen_id_;
	ea.ex_api = &scanner::handle_ex_sharpen;

	ex_opts_.push_back(ea);
}
void scanner::extension_paper(int id)
{
	EXAPI	ea;

	ea.ind = ex_paper_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_paper;
	ex_opts_.push_back(ea);

	ea.ind = ex_paper_lateral_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_paper_lateral;
	ex_opts_.push_back(ea);

	ea.ind = ex_auto_paper_size_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_auto_paper_size;
	ex_opts_.push_back(ea);

	ea.ind = ex_is_paper_auto_crop_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_auto_paper_crop;
	ex_opts_.push_back(ea);
}
void scanner::extension_fill_bkg_method(int id)
{
	EXAPI	ea;

	ea.ind = ex_fill_background_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_fill_background;
	ex_opts_.push_back(ea);
}
void scanner::extension_text_direction(int id)
{
	EXAPI	ea;

	ea.ind = ex_text_direction_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_text_direction;
	ex_opts_.push_back(ea);
}
void scanner::extension_page(int id)
{
	EXAPI	ea;
	wchar_t	msg[128] = { 0 };

	ea.ind = ex_duplex_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_duplex;
	ex_opts_.push_back(ea);
	{
		swprintf_s(msg, _countof(msg) - 1, L"handle_ex_duplex of id: %d\r\n", ea.ind);
		log_info(msg, 0);
	}

	ea.ind = ex_discard_blank_page_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_discard_blank_page;
	ex_opts_.push_back(ea);
	{
		swprintf_s(msg, _countof(msg) - 1, L"handle_ex_discard_blank_page of id: %d\r\n", ea.ind);
		log_info(msg, 0);
	}

	ea.ind = ex_discard_blank_receipt_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_discard_blank_receipt;
	ex_opts_.push_back(ea);
	{
		swprintf_s(msg, _countof(msg) - 1, L"handle_ex_discard_blank_receipt of id: %d\r\n", ea.ind);
		log_info(msg, 0);
	}

	ea.ind = ex_is_page_fold_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_page_fold;
	ex_opts_.push_back(ea);
	{
		swprintf_s(msg, _countof(msg) - 1, L"handle_ex_page_fold of id: %d\r\n", ea.ind);
		log_info(msg, 0);
	}
}
void scanner::extension_erase_color(int id)
{
	EXAPI	ea;

	ea.ind = ex_color_filter_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_color_filter;
	ex_opts_.push_back(ea);

	ea.ind = ex_color_enhance_id_ = ex_id_++;
	ea.base_ind = id;
	ea.ex_api = &scanner::handle_ex_color_enhance;
	ex_opts_.push_back(ea);
}
bool scanner::get_option_value_with_parent(int sn, set_opt_value setv, void* param)	// return true if handled
{
	bool handled = true;

	if (sn == scan_count_id_)
	{
		SANE_Option_Descriptor* parent = hg_sane_middleware::instance()->get_option_descriptor(handle_, scan_mode_id_);
		char* buf = new char[parent->size + 4];

		memset(buf, 0, parent->size);
		hg_sane_middleware::instance()->get_cur_value(handle_, scan_mode_id_, buf);
		handled = compare_sane_opt(OPTION_VALUE_SMZS_LXSM, buf);
		delete[] buf;
		if (handled)
		{
			int count = -1;
			value_role role = VAL_ROLE_CURRENT;
			buf = (char*)hg_sane_middleware::instance()->get_def_value(handle_, scan_mode_id_);
			if (compare_sane_opt(OPTION_VALUE_SMZS_LXSM, buf))
				role = value_role(role | VAL_ROLE_DEFAULT);
			local_utility::free_memory(buf);

			setv(&count, value_role(VAL_ROLE_CURRENT | VAL_ROLE_DEFAULT), param);
		}
	}
	else
		handled = false;

	return handled;
}
bool scanner::set_option_value_with_parent(int sn, void* data, int* err)	// return true if handled
{
	bool handled = true;

	if (sn == scan_count_id_)
	{
		SANE_Option_Descriptor* parent = hg_sane_middleware::instance()->get_option_descriptor(handle_, scan_mode_id_);
		char*		val = new char[parent->size + 4];
		SANE_Int	after = 0;

		memset(val, 0, parent->size + 4);
		hg_sane_middleware::instance()->get_cur_value(handle_, scan_mode_id_, val);
		if (compare_sane_opt(OPTION_VALUE_SMZS_LXSM, val))
		{
			if (*(int*)data != -1)
			{
				strcpy(val, OPTION_VALUE_SMZS_SMZDZS);
				*err = hg_sane_middleware::instance()->set_option(handle_, scan_mode_id_, SANE_ACTION_SET_VALUE, val, &after);
			}
		}
		else if (*(int*)data == -1)
		{
			strcpy(val, OPTION_VALUE_SMZS_LXSM);
			*err = hg_sane_middleware::instance()->set_option(handle_, scan_mode_id_, SANE_ACTION_SET_VALUE, val, &after);
		}
		handled = false;
	}
	else
	{
		handled = false;
	}

	return handled;
}
int scanner::set_option_value(int sn, SANE_Value_Type type, int size, void* data)
{
	char*		buf = NULL;
	SANE_Bool	sb = SANE_FALSE;
	SANE_Int	si = 0, after = 0;
	SANE_Fixed	sf = 0;
	int			ret = SCANNER_ERR_OK;
	void*		val = data;

	if (type == SANE_TYPE_BOOL)
	{
		sb = *(bool*)data ? SANE_TRUE : SANE_FALSE;
		val = &sb;
	}
	else if (type == SANE_TYPE_INT)
	{
		si = *(int*)data;
		val = &si;
	}
	else if (type == SANE_TYPE_FIXED)
	{
		sf = SANE_FIX(*(float*)data);
		val = &sf;
	}
	else
	{
		buf = new char[size + 4];
		memset(buf, 0, size + 4);
		strcpy(buf, ((std::string*)data)->c_str());
		val = buf;
	}

	ret = hg_sane_middleware::instance()->set_option(handle_, sn, SANE_ACTION_SET_VALUE, val, &after);

	if (type == SANE_TYPE_BOOL)
	{
		*(bool*)data = sb == SANE_TRUE;
	}
	else if (type == SANE_TYPE_INT)
	{
		*(int*)data = si;
	}
	else if (type == SANE_TYPE_FIXED)
	{
		*(float*)data = (float)SANE_UNFIX(sf);
	}
	else if(buf)
	{
		strcpy((char*)val, buf);
		delete[] buf;
	}

	return ret;
}

scanner::EXAPIPOS scanner::find_ex_api(int op_id)
{
	return std::find(ex_opts_.begin(), ex_opts_.end(), op_id);
}

EX_OPTION_HANDLER_IMPL(multiout)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);

	if (setv)
	{
		char* cur = new char[desc->size],
			* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		int now = 0,	// sane_opt_trans::multiout_value_to_twain(cur)
			init = sane_opt_trans::multiout_value_to_twain(def),
			val = 0;

		local_utility::free_memory(def);
		memset(cur, 0, desc->size);
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, cur);
		now = sane_opt_trans::multiout_value_to_twain(cur);
		delete[] cur;

		{
			// parent item ...
			SANE_Bool	enable = SANE_TRUE;
			if (hg_sane_middleware::instance()->get_cur_value(handle_, is_multiout_id_, &enable))
			{
				if (!enable)
					now = MULTI_OUT_NONE;
			}
		}

		do
		{
			if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
			{
				// we have no 'MULTI_OUT_NONE' item in this option, this is used as is_multiout_id_
				val = MULTI_OUT_NONE;
				value_role role = val == now ? VAL_ROLE_CURRENT : VAL_ROLE_NONE;
				if (!setv(&val, role, data))
					break;
				for (int i = 0; desc->constraint.string_list[i]; ++i)
				{
					value_role role = VAL_ROLE_NONE;
					val = sane_opt_trans::multiout_value_to_twain(desc->constraint.string_list[i]);
					if (val == now)
						role = VAL_ROLE_CURRENT;
					if (val == init)
						role = value_role(role | VAL_ROLE_DEFAULT);
					if (!setv(&val, role, data))
						break;
				}
			}
			else
				set_cur_and_def_value<int>(now, init, setv, data);
		} while (0);
	}
	else
	{
		char* val = new char[desc->size];
		const char* in = sane_opt_trans::multiout_value_from_twain(*(int*)data);
		SANE_Int	after = 0;

		if (in && strcmp(in, "\346\227\240"))
		{
			// enable multi-out ...
			*((SANE_Bool*)val) = SANE_TRUE;
			ret = hg_sane_middleware::instance()->set_option(handle_, is_multiout_id_, SANE_ACTION_SET_VALUE, val, &after);
			strcpy(val, in);
		}
		else
		{
			// disable multi-out, let multiout type side 
			base_id = is_multiout_id_;
			*((SANE_Bool*)val) = SANE_FALSE;
		}
		if (ret == SANE_STATUS_GOOD)
			ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, val, &after);
		delete[] val;
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(auto_color_type)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
	if (setv)
	{
		len = sane_opt_trans::auto_color_type_to_twain(buf);
		setv(&len, VAL_ROLE_CURRENT, data);
	}
	else
	{
		SANE_Int	after = 0;

		strcpy(buf, sane_opt_trans::auto_color_type_from_twain(*(int*)data));
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(color_mode)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);

	if (setv)
	{
		char* cur = new char[desc->size],
			* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		int now = 0,	// sane_opt_trans::multiout_value_to_twain(cur)
			init = sane_opt_trans::color_mode_to_twain(def),
			val = 0;

		local_utility::free_memory(def);
		memset(cur, 0, desc->size);
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, cur);
		now = sane_opt_trans::color_mode_to_twain(cur);
		delete[] cur;

		do
		{
			if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
			{
				for (int i = 0; desc->constraint.string_list[i]; ++i)
				{
					value_role role = VAL_ROLE_NONE;
					val = sane_opt_trans::color_mode_to_twain(desc->constraint.string_list[i]);
					if (val == now)
						role = VAL_ROLE_CURRENT;
					if (val == init)
						role = value_role(role | VAL_ROLE_DEFAULT);
					if (!setv(&val, role, data))
						break;
				}
			}
			else
				set_cur_and_def_value<int>(now, init, setv, data);
		} while (0);
	}
	else
	{
		char* val = new char[desc->size];
		const char* in = sane_opt_trans::color_mode_from_twain(*(int*)data);
		SANE_Int	after = 0;

		strcpy(val, in);
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, val, &after);
		delete[] val;
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(sharpen)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);

	if (setv)
	{
		char* cur = new char[desc->size],
			* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		int now = 0,	// sane_opt_trans::multiout_value_to_twain(cur)
			init = sane_opt_trans::sharpen_to_twain(def),
			val = 0;

		local_utility::free_memory(def);
		memset(cur, 0, desc->size);
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, cur);
		now = sane_opt_trans::sharpen_to_twain(cur);
		delete[] cur;

		do
		{
			if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
			{
				for (int i = 0; desc->constraint.string_list[i]; ++i)
				{
					value_role role = VAL_ROLE_NONE;
					val = sane_opt_trans::sharpen_to_twain(desc->constraint.string_list[i]);
					if (val == now)
						role = VAL_ROLE_CURRENT;
					if (val == init)
						role = value_role(role | VAL_ROLE_DEFAULT);
					if (!setv(&val, role, data))
						break;
				}
			}
			else
				set_cur_and_def_value<int>(now, init, setv, data);
		} while (0);
	}
	else
	{
		char* val = new char[desc->size];
		const char* in = sane_opt_trans::sharpen_from_twain(*(int*)data);
		SANE_Int	after = 0;

		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, val, &after);
		delete[] val;
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(paper)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		char* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		int now = sane_opt_trans::paper_to_twain(buf),
			init = sane_opt_trans::paper_to_twain(def),
			val = 0;

		local_utility::free_memory(def);
		do
		{
			if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
			{
				for (int i = 0; desc->constraint.string_list[i]; ++i)
				{
					value_role role = VAL_ROLE_NONE;
					val = sane_opt_trans::paper_to_twain(desc->constraint.string_list[i]);
					if (val == -1)
						continue;
					if (val == now)
						role = VAL_ROLE_CURRENT;
					if (val == init)
						role = value_role(role | VAL_ROLE_DEFAULT);
					if (!setv(&val, role, data))
						break;
				}
			}
			else
				set_cur_and_def_value<int>(now, init, setv, data);
		} while (0);
	}
	else if (sane_opt_trans::paper_from_twain(*(int*)data))
	{
		SANE_Int after = 0;
		strcpy(buf, sane_opt_trans::paper_from_twain(*(int*)data));
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
	}
	else
		ret = SCANNER_ERR_INVALID_PARAMETER;

	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(paper_lateral)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	int len = desc->size + 4;
	char* buf = new char[len];
	const char* lateral_swap = NULL;
	bool lateral = false;

	memset(buf, 0, len);
	hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
	lateral_swap = sane_opt_trans::switch_paper_lateral(buf);
	lateral = sane_opt_trans::is_paper_lateral(buf);
	if (setv)
	{
		setv(&lateral, VAL_ROLE_CURRENT, data);
	}
	else if (lateral_swap)
	{
		SANE_Int after = 0;
		if (lateral != *(bool*)data)
		{
			strcpy(buf, lateral_swap);
			ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
			ret = local_utility::sane_statu_2_scanner_err(ret);
		}
	}
	else
	{
		SANE_Int after = 0;
		if (*(bool*)data)
		{
			// set to A4Lateral ...
			strcpy(buf, OPTION_VALUE_ZZCC_A4HX);
			ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
			ret = local_utility::sane_statu_2_scanner_err(ret);
		}
		//ret = SCANNER_ERR_DEVICE_NOT_SUPPORT;
	}

	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(auto_paper_size)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
	if (setv)
	{
		bool yes = strcmp(buf, OPTION_VALUE_ZZCC_PPYSCC) == 0;
		setv(&yes, VAL_ROLE_CURRENT, data);
	}
	else
	{
		SANE_Int after = 0;
		strcpy(buf, *(bool*)data ? OPTION_VALUE_ZZCC_PPYSCC : OPTION_VALUE_ZZCC_A4);
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(auto_paper_crop)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
	if (setv)
	{
		bool yes = strcmp(buf, OPTION_VALUE_ZZCC_ZDSMCCZDCQ) == 0;
		setv(&yes, VAL_ROLE_CURRENT, data);
	}
	else
	{
		SANE_Int after = 0;
		strcpy(buf, *(bool*)data ? OPTION_VALUE_ZZCC_ZDSMCCZDCQ : OPTION_VALUE_ZZCC_ZDSMCC);
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(text_direction)
{
	int	ret = SCANNER_ERR_OK;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		char* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		float now = .0f, init = sane_opt_trans::text_direction_to_twain(def), val = .0f;

		local_utility::free_memory(def);
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		now = sane_opt_trans::text_direction_to_twain(buf);
		do
		{
			if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
			{
				for (int i = 0; desc->constraint.string_list[i]; ++i)
				{
					value_role	role = VAL_ROLE_NONE;
					val = sane_opt_trans::text_direction_to_twain(desc->constraint.string_list[i]);
					if (IS_DOUBLE_EQUAL(val, now))
						role = VAL_ROLE_CURRENT;
					if (IS_DOUBLE_EQUAL(val, init))
						role = value_role(role | VAL_ROLE_DEFAULT);
					if (!setv(&val, role, data))
						break;
				}
			}
			else
				set_cur_and_def_value<float>(now, init, setv, data);
		} while (0);
	}
	else
	{
		SANE_Int	after = 0;

		strcpy(buf, sane_opt_trans::text_direction_from_twain(*(float*)data));
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(duplex)
{
	int	ret = SCANNER_ERR_OK;
	bool val = *(bool*)data;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	unsigned len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		void* init = hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		val = strcmp(buf, OPTION_VALUE_SMYM_SM) == 0;
		if (val && strcmp((char*)init, OPTION_VALUE_SMYM_SM) == 0 ||
			!val && strcmp((char*)init, OPTION_VALUE_SMYM_DM) == 0)
			setv(&val, value_role(VAL_ROLE_CURRENT | VAL_ROLE_DEFAULT), data);
		else if (setv(&val, VAL_ROLE_CURRENT, data))
		{
			if (strcmp((char*)init, OPTION_VALUE_SMYM_SM) == 0)
			{
				val = true;
				setv(&val, VAL_ROLE_DEFAULT, data);
			}
			if (strcmp((char*)init, OPTION_VALUE_SMYM_DM) == 0)
			{
				val = false;
				setv(&val, VAL_ROLE_DEFAULT, data);
			}
		}
		local_utility::free_memory(init);
	}
	else
	{
		strcpy(buf, val ? OPTION_VALUE_SMYM_SM : OPTION_VALUE_SMYM_DM);
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(fill_background)
{
	int	ret = SCANNER_ERR_OK;
	bool val = *(bool*)data;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	unsigned len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		val = strcmp(buf, OPTION_VALUE_SMYM_SM) == 0;
		set_cur_and_def_value<bool>(strcmp(buf, OPTION_VALUE_BJTCFS_TDBX) == 0, strcmp(init, OPTION_VALUE_BJTCFS_TDBX) == 0, setv, data);
		local_utility::free_memory(init);
	}
	else
	{
		strcpy(buf, val ? OPTION_VALUE_BJTCFS_TDBX : OPTION_VALUE_BJTCFS_ADBX);
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(discard_blank_page)
{
	int	ret = SCANNER_ERR_OK;
	bool val = *(bool*)data;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	unsigned len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		val = strcmp(buf, OPTION_VALUE_SMYM_TGKBYTY) == 0;
		setv(&val, VAL_ROLE_CURRENT, data);
	}
	else
	{
		if (val)
			strcpy(buf, OPTION_VALUE_SMYM_TGKBYTY);
		else
		{
			char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
			strcpy(buf, init);
			local_utility::free_memory(init);
		}
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(discard_blank_receipt)
{
	int	ret = SCANNER_ERR_OK;
	bool val = *(bool*)data;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	unsigned len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		val = strcmp(buf, OPTION_VALUE_SMYM_TGKBYFPZ) == 0;
		setv(&val, VAL_ROLE_CURRENT, data);
	}
	else
	{
		if (val)
			strcpy(buf, OPTION_VALUE_SMYM_TGKBYFPZ);
		else
		{
			char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
			strcpy(buf, init);
			local_utility::free_memory(init);
		}
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(page_fold)
{
	int	ret = SCANNER_ERR_OK;
	bool val = *(bool*)data;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	unsigned len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	if (setv)
	{
		hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
		val = strcmp(buf, OPTION_VALUE_SMYM_DZ) == 0;
		setv(&val, VAL_ROLE_CURRENT, data);
	}
	else
	{
		if (val)
			strcpy(buf, OPTION_VALUE_SMYM_DZ);
		else
		{
			char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, base_id);
			strcpy(buf, init);
			local_utility::free_memory(init);
		}
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	delete[] buf;

	return ret;
}
EX_OPTION_HANDLER_IMPL(color_filter)		// int (filter_value)
{
	int	ret = SCANNER_ERR_DEVICE_NOT_SUPPORT;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	char* buf = NULL;
	unsigned int len = 0;

	if (desc)
	{
		len = desc->size + 4;
		buf = new char[len];
		memset(buf, 0, len);
		if (setv)
		{
			bool filter = false;
			int val = FILTER_NONE, now = FILTER_NONE;
			hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
			now = sane_opt_trans::filter_enhance_value_to_twain(buf, &filter);
			if (!filter)
				now = val;
			do
			{
				if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
				{
					for (int i = 0; desc->constraint.string_list[i]; ++i)
					{
						value_role role = VAL_ROLE_NONE;
						int v = sane_opt_trans::filter_enhance_value_to_twain(desc->constraint.string_list[i], &filter);
						if (!filter && v != FILTER_NONE)
							continue;
						if (v == now)
							role = VAL_ROLE_CURRENT;
						if (v == val)
							role = value_role(role | VAL_ROLE_DEFAULT);
						if (!setv(&v, role, data))
							break;
					}
				}
			}while (0);
		}
		else
		{
			const char* val = sane_opt_trans::filter_enhance_value_from_twain(*((int*)data), true);
			SANE_Int	after = 0;

			strcpy(buf, val);
			ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
			ret = local_utility::sane_statu_2_scanner_err(ret);
		}
		delete[] buf;
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(color_enhance)		// int (enhance_value)
{
	int	ret = SCANNER_ERR_DEVICE_NOT_SUPPORT;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, base_id);
	char* buf = NULL;
	unsigned int len = 0;

	if (desc)
	{
		len = desc->size + 4;
		buf = new char[len];
		memset(buf, 0, len);
		if (setv)
		{
			bool filter = false;
			int val = ENHANCE_NONE, now = ENHANCE_NONE;
			hg_sane_middleware::instance()->get_cur_value(handle_, base_id, buf);
			now = sane_opt_trans::filter_enhance_value_to_twain(buf, &filter);
			if (filter)
				now = val;
			do
			{
				if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
				{
					for (int i = 0; desc->constraint.string_list[i]; ++i)
					{
						value_role role = VAL_ROLE_NONE;
						int v = sane_opt_trans::filter_enhance_value_to_twain(desc->constraint.string_list[i], &filter);
						if (filter && v != ENHANCE_NONE)
							continue;
						if (v == now)
							role = VAL_ROLE_CURRENT;
						if (v == val)
							role = value_role(role | VAL_ROLE_DEFAULT);
						if (!setv(&v, role, data))
							break;
					}
				}
			} while (0);
		}
		else
		{
			const char* val = sane_opt_trans::filter_enhance_value_from_twain(*((int*)data), false);
			SANE_Int	after = 0;

			strcpy(buf, val);
			ret = hg_sane_middleware::instance()->set_option(handle_, base_id, SANE_ACTION_SET_VALUE, buf, &after);
			ret = local_utility::sane_statu_2_scanner_err(ret);
		}
		delete[] buf;
	}

	return ret;
}

EX_OPTION_HANDLER_IMPL(final_compression)
{
	int				ret = SCANNER_ERR_OK;
	int*			compression = (int*)data;
	unsigned int	len = sizeof(*compression);

	if (setv)
	{
		int val = 0;
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_FINAL_COMPRESSION, &val, &len);
		if (ret == SANE_STATUS_GOOD)
		{
			int i = SANE_COMPRESSION_FIRST;
			for (; i < SANE_COMPRESSION_LAST; ++i)
			{
				value_role role = VAL_ROLE_NONE;
				if (i == val)
					role = VAL_ROLE_CURRENT;
				if (i == SANE_COMPRESSION_NONE)
					role = value_role(role | VAL_ROLE_DEFAULT);
				int v = sane_opt_trans::compression_to_twain(i);
				if (!setv(&v, role, data))
					break;
			}
		}
	}
	else
	{
		int val = sane_opt_trans::compression_from_twain(*(int*)data);
		len = sizeof(val);
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_SET_FINAL_COMPRESSION, &val, &len);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(final_format)
{
	int					ret = SCANNER_ERR_OK;
	SANE_FinalImgFormat	ff;
	unsigned int		len = sizeof(ff);

	if (setv)
	{
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_FINAL_IMAGE_FORMAT, &ff, &len);
		if (ret == SANE_STATUS_GOOD)
		{
			int now = ff.img_format, init = SANE_IMAGE_TYPE_BMP;
			std::vector<int>	all(sane_opt_trans::support_image_types());
			for (int i = 0; i < (int)all.size(); ++i)
			{
				value_role role = VAL_ROLE_NONE;
				ff.img_format = (SANE_ImageType)all[i];
				if (ff.img_format == now)
					role = VAL_ROLE_CURRENT;
				if (ff.img_format == init)
					role = value_role(role | VAL_ROLE_DEFAULT);
				if (!setv(&ff, role, data))
					break;
			}
		}
	}
	else
	{
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_SET_FINAL_IMAGE_FORMAT, data, &len);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(serial)
{
	int ret = SCANNER_ERR_INVALID_PARAMETER;
	if (setv)
	{
		std::string val("");

		ret = control_read_string(IO_CTRL_CODE_GET_SERIAL, val);
		if (ret == SANE_STATUS_GOOD)
			setv(&val, VAL_ROLE_CURRENT, data);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(to_be_scan)
{
	int ret = SCANNER_ERR_OK;
	SANE_Bool	wait_paper = SANE_FALSE;
	unsigned int len = sizeof(wait_paper);

	if (setv)
	{
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_SCAN_WHEN_PAPER_ON, &wait_paper, &len);
		if (ret == SANE_STATUS_GOOD)
		{
			bool val = wait_paper == SANE_TRUE;
			setv(&val, VAL_ROLE_CURRENT, data);
		}
	}
	else
	{
		wait_paper = *((bool*)data) ? SANE_TRUE : SANE_FALSE;
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_SET_SCAN_WHEN_PAPER_ON, &wait_paper, &len);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(scan_with_hole)
{
	int ret = SCANNER_ERR_OK;
	SANE_Bool	with_hole = SANE_FALSE;
	unsigned int len = sizeof(with_hole);

	if (setv)
	{
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_SCAN_WITH_HOLE, &with_hole, &len);
		if (ret == SANE_STATUS_GOOD)
		{
			bool val = with_hole == SANE_TRUE;
			setv(&val, VAL_ROLE_CURRENT, data);
		}
	}
	else
	{
		with_hole = *((bool*)data) ? SANE_TRUE : SANE_FALSE;
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_SET_SCAN_WITH_HOLE, &with_hole, &len);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(device_code)
{
	int ret = SCANNER_ERR_INVALID_PARAMETER;
	if (setv)
	{
		std::string val("");

		ret = control_read_string(IO_CTRL_CODE_GET_DEVICE_CODE, val);
		if (ret == SANE_STATUS_GOOD)
			setv(&val, VAL_ROLE_CURRENT, data);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(power)
{
	int ret = SCANNER_ERR_OK;

	if (setv)
	{
		SANE_Power now = SANE_POWER_MINUTES_30, init = SANE_POWER_MINUTES_30;
		unsigned int len = sizeof(now);

		hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_POWER_LEVEL, &now, &len);
		for (int i = SANE_POWER_FIRST; i < SANE_POWER_LAST; ++i)
		{
			value_role	role = VAL_ROLE_NONE;
			if (i == now)
				role = VAL_ROLE_CURRENT;
			if (i == init)
				role = value_role(role | VAL_ROLE_DEFAULT);

			SANE_Power power = (SANE_Power)i;
			if (!setv(&power, role, data))
				break;
		}
	}
	else
	{
		SANE_Power power = *((SANE_Power*)data);
		unsigned int len = sizeof(power);
		ret = hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_SET_POWER_LEVEL, &power, &len);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(hardware_version)
{
	int ret = SCANNER_ERR_INVALID_PARAMETER;
	if (setv)
	{
		std::string val("");

		ret = control_read_string(IO_CTRL_CODE_GET_HARDWARE_VERSION, val);
		if (ret == SANE_STATUS_GOOD)
			setv(&val, VAL_ROLE_CURRENT, data);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(ip)
{
	int ret = SCANNER_ERR_INVALID_PARAMETER;
	if (setv)
	{
		std::string val("");

		ret = control_read_string(IO_CTRL_CODE_GET_IP, val);
		if (ret == SANE_STATUS_GOOD)
			setv(&val, VAL_ROLE_CURRENT, data);
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(erase_hole)
{
	int ret = SCANNER_ERR_DEVICE_NOT_SUPPORT;
	if (is_erase_hole_l_id_ != -1 || is_erase_hole_r_id_ != -1)
	{
		SANE_Bool	yes = SANE_FALSE;
		SANE_Int	after = 0;
		if (setv)
		{
			if (is_erase_hole_l_id_ != -1)
				hg_sane_middleware::instance()->set_option(handle_, is_erase_hole_l_id_, SANE_ACTION_GET_VALUE, &yes, &after);
			if (!yes && is_erase_hole_r_id_ != -1)
				hg_sane_middleware::instance()->set_option(handle_, is_erase_hole_r_id_, SANE_ACTION_GET_VALUE, &yes, &after);

			bool v = yes == SANE_TRUE;
			setv(&v, VAL_ROLE_CURRENT, data);
			ret = SCANNER_ERR_OK;
		}
		else
		{
			yes = *(bool*)data ? SANE_TRUE : SANE_FALSE;
			if (is_erase_hole_l_id_ != -1)
				ret = hg_sane_middleware::instance()->set_option(handle_, is_erase_hole_l_id_, SANE_ACTION_SET_VALUE, &yes, &after);
			yes = *(bool*)data ? SANE_TRUE : SANE_FALSE;
			if (is_erase_hole_r_id_ != -1)
				ret = hg_sane_middleware::instance()->set_option(handle_, is_erase_hole_r_id_, SANE_ACTION_SET_VALUE, &yes, &after);
		}
	}

	return ret;
}
EX_OPTION_HANDLER_IMPL(search_hole_range)
{
	int ret = SCANNER_ERR_DEVICE_NOT_SUPPORT;
	if (search_hole_range_l_id_ != -1 || search_hole_range_r_id_ != -1)
	{
		SANE_Fixed	val = 0;
		SANE_Int	after = 0;
		double		rv = .0f;
		if (setv)
		{
			if (search_hole_range_l_id_ != -1)
				hg_sane_middleware::instance()->set_option(handle_, search_hole_range_l_id_, SANE_ACTION_GET_VALUE, &val, &after);
			rv = SANE_UNFIX(val);
			if (search_hole_range_r_id_ != -1)
			{
				hg_sane_middleware::instance()->set_option(handle_, search_hole_range_r_id_, SANE_ACTION_GET_VALUE, &val, &after);
				if (rv < SANE_UNFIX(val))
					rv = SANE_UNFIX(val);
			}

			setv(&rv, VAL_ROLE_CURRENT, data);
			ret = SCANNER_ERR_OK;
		}
		else
		{
			val = SANE_FIX(*(double*)data);
			if (search_hole_range_l_id_ != -1)
				ret = hg_sane_middleware::instance()->set_option(handle_, search_hole_range_l_id_, SANE_ACTION_SET_VALUE, &val, &after);
			val = SANE_FIX(*(double*)data);
			if (search_hole_range_r_id_ != -1)
				ret = hg_sane_middleware::instance()->set_option(handle_, search_hole_range_r_id_, SANE_ACTION_SET_VALUE, &val, &after);
		}
	}

	return ret;
}

// ISaneInvoker
COM_API_IMPLEMENT(scanner, int, start(void))
{
	int ret = SANE_STATUS_GOOD;

	events_.clear();
	images_.clear();
	scan_msg_ = "OK";
	scan_err_ = false;
	app_wnd_ = setting_.get() ? setting_->hwnd() : callback::find_main_wnd();
	ret = hg_sane_middleware::instance()->start(handle_, NULL);

	// the third-APPs in linux will call 'stop' after every start, but it not happens in windows-apps, so we handle this as following ...
	if(ret == SANE_STATUS_NO_DOCS && prev_start_result_ == SANE_STATUS_GOOD)
		ret = hg_sane_middleware::instance()->start(handle_, NULL);

	if (ret == SANE_STATUS_GOOD)
	{
		if (indicator_.get() && !IsWindowVisible(indicator_->hwnd()))
			indicator_->show(true);

		unsigned int l = sizeof(img_fmt_);
		SANE_CompressionType cmprsn = img_fmt_.compress.compression;
		if (hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_FINAL_IMAGE_FORMAT, &img_fmt_, &l))
			img_fmt_.img_format = SANE_IMAGE_TYPE_BMP;
		img_fmt_.compress.compression = cmprsn;
	}
	//else if (indicator_.get())
	//{
	//	indicator_->notify_scan_over(hg_scanner_err_description(ret), true);
	//}
	else
	{
		std::wstring	msg(local_trans::a2u(hg_scanner_err_description(ret), CP_UTF8));

		if (indicator_.get())
			indicator_->show(false);
		if (!IsWindow(app_wnd_))
			callback::bring_message_box_topmost(L"\u542F\u52A8\u5931\u8D25");
		MessageBoxW(app_wnd_, msg.c_str(), L"\u542F\u52A8\u5931\u8D25", MB_OK | MB_ICONERROR);
	}
	prev_start_result_ = ret;
	is_scanning_ = ret == SANE_STATUS_GOOD;

	return local_utility::sane_statu_2_scanner_err(ret);
}
COM_API_IMPLEMENT(scanner, int, stop(void))
{
	return hg_sane_middleware::instance()->stop(handle_);
}
COM_API_IMPLEMENT(scanner, int, get_event(void))
{
	return events_.take();
}
COM_API_IMPLEMENT(scanner, void, set_event_callback(int(__stdcall* handle_ev)(int, void*), void* para))
{
	scanner_ev_handler_ = handle_ev;
	evh_param_ = para;
}
COM_API_IMPLEMENT(scanner, bool, wait_image(DWORD milliseconds))
{
	int count = get_scanned_images(milliseconds);

	return count > 0;
}
COM_API_IMPLEMENT(scanner, int, get_scanned_images(DWORD milliseconds))
{
	size_t count = images_.count();
	DWORD	elapse = 10;

	is_ui_wait_img_ = true;
	while (is_scanning_ && count == 0 && milliseconds)
	{
		MSG msg = { 0 };
		if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE))
		{
			TranslateMessage(&msg);
			DispatchMessageW(&msg);
		}
		else
			Sleep(elapse);

		int ev = get_event();

		count = images_.count();
		if (ev == SANE_EVENT_SCAN_FINISHED)
		{
			ui_hide();
			break;
		}
		else if (ev == SANE_EVENT_UI_CLOSE_CANCEL)
		{
			stop();
			ui_hide();
			break;
		}
		else if (ev == SANE_EVENT_UI_CLOSE_NORMAL)
		{
			ui_hide();
			break;
		}
		if (milliseconds != -1)
		{
			if (milliseconds <= elapse)
				break;

			milliseconds -= elapse;
		}
	}
	is_ui_wait_img_ = false;
	count = images_.count();

	{
		wchar_t	msg[128] = { 0 };
		swprintf_s(msg, _countof(msg) - 1, L"Wait image count = %d\r\n", count);
		log_info(msg, 0);
	}

	return count;
}
COM_API_IMPLEMENT(scanner, IScanImg*, take_first_image(twain_xfer xfer))
{
	scanned_img* img = images_.take();

	return dynamic_cast<IScanImg*>(img);
}
COM_API_IMPLEMENT(scanner, bool, get_first_image_header(SANE_Parameters* header, size_t* bytes, int* dpi))
{
	return images_.get_header(header, bytes, dpi);
}
COM_API_IMPLEMENT(scanner, bool, is_online(void))
{
	std::string	sn("");

	return handle_ && control_read_string(IO_CTRL_CODE_GET_SERIAL, sn) != SCANNER_ERR_DEVICE_NOT_FOUND;
}
COM_API_IMPLEMENT(scanner, bool, is_paper_on(void))
{
	SANE_Bool on = SANE_FALSE;
	unsigned int len = sizeof(on);

	if (hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_GET_PAPER_ON, &on, &len) == SANE_STATUS_GOOD)
		return on == SANE_TRUE;
	else
		return false;
}
COM_API_IMPLEMENT(scanner, bool, get_option_info(int sn, value_type* type, value_limit* limit, int* bytes))
{
	EXAPIPOS	ex = find_ex_api(sn);
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, ex == ex_opts_.end() ? sn : ex->base_ind);
	bool ret = false;

	if (desc)
	{
		if (type)
			*type = scanner::from_sane_type(desc->type);
		if (limit)
			*limit = scanner::from_sane_constraint(desc->constraint_type);
		if (bytes)
			*bytes = desc->size;

		ret = true;
	}

	return ret;
}
COM_API_IMPLEMENT(scanner, bool, get_value(int sn, set_opt_value setval, void* param))
{
	EXAPIPOS	ex = find_ex_api(sn);
	int			ret = SANE_STATUS_INVAL;
	SANE_Int	after = 0;

	if (ex == ex_opts_.end())
	{
		if (get_option_value_with_parent(sn, setval, param))
			return true;

		SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, sn);
		void* init = hg_sane_middleware::instance()->get_def_value(handle_, sn);
		ret = SANE_STATUS_GOOD;
		if (desc->type == SANE_TYPE_BOOL)
		{
			SANE_Bool v = SANE_FALSE;
			bool val = false;

			hg_sane_middleware::instance()->get_cur_value(handle_, sn, &v);
			val = v == SANE_TRUE;
			set_cur_and_def_value<bool>(val, *(SANE_Bool*)init == SANE_TRUE, setval, param);
		}
		else if (desc->type == SANE_TYPE_INT)
		{
			SANE_Int cur = 0, def = *(SANE_Int*)init;
			int		val = 0;

			hg_sane_middleware::instance()->get_cur_value(handle_, sn, &cur);
			val = cur;
			if (sn == resolution_id_)
				dpi_ = cur;
			do
			{
				if (desc->constraint_type == SANE_CONSTRAINT_RANGE)
				{
					set_value_range<SANE_Int, int>(cur, def, desc->constraint.range->min, desc->constraint.range->max, desc->constraint.range->quant, setval, param, scanner::to_int);
				}
				else if (desc->constraint_type == SANE_CONSTRAINT_WORD_LIST)
				{
					const SANE_Word* v = desc->constraint.word_list;
					for (int i = 0; i < v[0]; ++i)
					{
						value_role role = VAL_ROLE_NONE;
						if (v[i + 1] == cur)
							role = value_role(role | VAL_ROLE_CURRENT);
						if (v[i + 1] == *(SANE_Int*)init)
							role = value_role(role | VAL_ROLE_DEFAULT);
						val = v[i + 1];
						if (!setval(&val, role, param))
							break;
					}
				}
				else
					set_cur_and_def_value<int>(val, *(SANE_Int*)init, setval, param);

			}while (0);
		}
		else if (desc->type == SANE_TYPE_FIXED)
		{
			SANE_Fixed cur = 0, def = *(SANE_Fixed*)init;
			float	val = .0f;

			hg_sane_middleware::instance()->get_cur_value(handle_, sn, &cur);
			if (sn == resolution_id_)
				dpi_ = (int)(SANE_UNFIX(cur) + .5f);
			do
			{
				if (desc->constraint_type == SANE_CONSTRAINT_RANGE)
				{
					set_value_range<SANE_Fixed, float>(cur, def, desc->constraint.range->min, desc->constraint.range->max, desc->constraint.range->quant, setval, param, scanner::to_float);
				}
				else if (desc->constraint_type == SANE_CONSTRAINT_WORD_LIST)
				{
					const SANE_Word* v = desc->constraint.word_list;
					for (int i = 0; i < v[0]; ++i)
					{
						value_role role = VAL_ROLE_NONE;
						if (v[i + 1] == cur)
							role = value_role(role | VAL_ROLE_CURRENT);
						if (v[i + 1] == def)
							role = value_role(role | VAL_ROLE_DEFAULT);
						val = (float)SANE_UNFIX(v[i + 1]);
						if (!setval(&val, role, param))
							break;
					}
				}
				else
					set_cur_and_def_value<float>(val, (float)SANE_UNFIX(*(SANE_Fixed*)init), setval, param);
			} while (0);
		}
		else if (desc->type == SANE_TYPE_STRING)
		{
			char* buf = new char[desc->size + 4];
			std::string val(""), def((char*)init);

			memset(buf, 0, desc->size + 4);
			hg_sane_middleware::instance()->get_cur_value(handle_, sn, buf);
			val = buf;
			do
			{
				if (desc->constraint_type == SANE_CONSTRAINT_STRING_LIST)
				{
					for (int i = 0; desc->constraint.string_list[i]; ++i)
					{
						value_role role = VAL_ROLE_NONE;
						if (strcmp(desc->constraint.string_list[i], buf) == 0)
							role = value_role(role | VAL_ROLE_CURRENT);
						if (strcmp(desc->constraint.string_list[i], (char*)init) == 0)
							role = value_role(role | VAL_ROLE_DEFAULT);

						val = desc->constraint.string_list[i];
						if (!setval(&val, role, param))
							break;
					}
				}
				else
					set_cur_and_def_value<std::string>(val, def, setval, param);
			} while (0);
			delete[] buf;
		}
		else
		{
			ret = SANE_STATUS_INVAL;
		}
		local_utility::free_memory(init);
	}
	else
	{
		ret = (this->*ex->ex_api)(ex->base_ind, param, setval);
	}

	return ret == SANE_STATUS_GOOD;
}
COM_API_IMPLEMENT(scanner, int, set_value(int sn, void* val))
{
	EXAPIPOS	ex = find_ex_api(sn);
	int			ret = SANE_STATUS_INVAL;
	SANE_Int	after = 0;
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, sn);

	{
		wchar_t	msg[128] = { 0 };
		if (ex == ex_opts_.end())
			swprintf_s(msg, _countof(msg) - 1, L"set_value of ID: %d\r\n", sn);
		else
			swprintf_s(msg, _countof(msg) - 1, L"set_value of ID: %d (base id = %d)\r\n", sn, ex->base_ind);
		log_info(msg, 0);
	}

	if (ex == ex_opts_.end())
	{
		if (!set_option_value_with_parent(sn, val, &ret))
			ret = set_option_value(sn, desc->type, desc->size, val);
		ret = local_utility::sane_statu_2_scanner_err(ret);
	}
	else
	{
		ret = (this->*ex->ex_api)(ex->base_ind, val, NULL);
	}

	if (sn == resolution_id_)
	{
		if (desc->type == SANE_TYPE_FIXED)
			dpi_ = (int)(*(float*)val + .5f);
		else
			dpi_ = *(int*)val;
	}

	return ret;
}
COM_API_IMPLEMENT(scanner, int, convert_image(SANE_ImageFormatConvert* conv))
{
	return hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_CONVERT_IMAGE_FORMAT, conv, NULL);
}
COM_API_IMPLEMENT(scanner, void, free_buffer(void* buf, int len))
{
	hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_FREE_MEMORY, buf, (unsigned int*)&len);
}

// SANE options ID ...
SANE_OPTION_ID_IMPLEMENT(is_multiout)
SANE_OPTION_ID_IMPLEMENT(multiout_type)
SANE_OPTION_ID_IMPLEMENT(color_mode)
SANE_OPTION_ID_IMPLEMENT(erase_color)
SANE_OPTION_ID_IMPLEMENT(erase_multiout_red)
SANE_OPTION_ID_IMPLEMENT(erase_paper_red)
SANE_OPTION_ID_IMPLEMENT(is_erase_background)
SANE_OPTION_ID_IMPLEMENT(background_color_range)
SANE_OPTION_ID_IMPLEMENT(sharpen)
SANE_OPTION_ID_IMPLEMENT(erase_morr)
SANE_OPTION_ID_IMPLEMENT(erase_grids)
SANE_OPTION_ID_IMPLEMENT(error_extend)
SANE_OPTION_ID_IMPLEMENT(is_noise_modify)
SANE_OPTION_ID_IMPLEMENT(noise_threshold)
SANE_OPTION_ID_IMPLEMENT(paper)
SANE_OPTION_ID_IMPLEMENT(is_custom_area)
SANE_OPTION_ID_IMPLEMENT(curstom_area_l)
SANE_OPTION_ID_IMPLEMENT(curstom_area_r)
SANE_OPTION_ID_IMPLEMENT(curstom_area_t)
SANE_OPTION_ID_IMPLEMENT(curstom_area_b)
SANE_OPTION_ID_IMPLEMENT(is_size_check)
SANE_OPTION_ID_IMPLEMENT(page)
SANE_OPTION_ID_IMPLEMENT(blank_page_threshold)
SANE_OPTION_ID_IMPLEMENT(resolution)
SANE_OPTION_ID_IMPLEMENT(image_quality)
SANE_OPTION_ID_IMPLEMENT(is_swap)
SANE_OPTION_ID_IMPLEMENT(is_split)
SANE_OPTION_ID_IMPLEMENT(is_auto_deskew)
SANE_OPTION_ID_IMPLEMENT(is_custom_gamma)
SANE_OPTION_ID_IMPLEMENT(bright)
SANE_OPTION_ID_IMPLEMENT(contrast)
SANE_OPTION_ID_IMPLEMENT(gamma)
SANE_OPTION_ID_IMPLEMENT(is_erase_black_frame)
SANE_OPTION_ID_IMPLEMENT(deep_sample)
SANE_OPTION_ID_IMPLEMENT(threshold)
SANE_OPTION_ID_IMPLEMENT(anti_noise)
SANE_OPTION_ID_IMPLEMENT(margin)
SANE_OPTION_ID_IMPLEMENT(fill_background)
SANE_OPTION_ID_IMPLEMENT(is_anti_permeate)
SANE_OPTION_ID_IMPLEMENT(anti_permeate_level)
SANE_OPTION_ID_IMPLEMENT(is_erase_hole)
SANE_OPTION_ID_IMPLEMENT(search_hole_range)
SANE_OPTION_ID_IMPLEMENT(is_filling_color)
SANE_OPTION_ID_IMPLEMENT(is_ultrasonic_check)
SANE_OPTION_ID_IMPLEMENT(is_check_staple)
SANE_OPTION_ID_IMPLEMENT(scan_mode)
SANE_OPTION_ID_IMPLEMENT(scan_count)
SANE_OPTION_ID_IMPLEMENT(text_direction)
SANE_OPTION_ID_IMPLEMENT(is_rotate_bkg180)
SANE_OPTION_ID_IMPLEMENT(is_check_dogear)
SANE_OPTION_ID_IMPLEMENT(dogear_size)
SANE_OPTION_ID_IMPLEMENT(is_check_skew)
SANE_OPTION_ID_IMPLEMENT(skew_range)
SANE_OPTION_ID_IMPLEMENT(black_white_threshold)
SANE_OPTION_ID_IMPLEMENT(is_photo_mode)
SANE_OPTION_ID_IMPLEMENT(double_feed_handle)
SANE_OPTION_ID_IMPLEMENT(scan_when_paper_on)
SANE_OPTION_ID_IMPLEMENT(feed_strength)
SANE_OPTION_ID_IMPLEMENT(power_scheme)
SANE_OPTION_ID_IMPLEMENT(is_auto_strength)
SANE_OPTION_ID_IMPLEMENT(feed_strength_value)
SANE_OPTION_ID_IMPLEMENT(is_reverse_bw)
SANE_OPTION_ID_IMPLEMENT(is_erase_hole_l)
SANE_OPTION_ID_IMPLEMENT(search_hole_range_l)
SANE_OPTION_ID_IMPLEMENT(is_erase_hole_r)
SANE_OPTION_ID_IMPLEMENT(search_hole_range_r)
SANE_OPTION_ID_IMPLEMENT(is_erase_hole_t)
SANE_OPTION_ID_IMPLEMENT(search_hole_range_t)
SANE_OPTION_ID_IMPLEMENT(is_erase_hole_b)
SANE_OPTION_ID_IMPLEMENT(search_hole_range_b)
SANE_OPTION_ID_IMPLEMENT(fold_direction)

// SANE-ex option ID:
SANE_OPTION_ID_IMPLEMENT(ex_multiout_type)
SANE_OPTION_ID_IMPLEMENT(ex_auto_color_type)
SANE_OPTION_ID_IMPLEMENT(ex_color_mode)
SANE_OPTION_ID_IMPLEMENT(ex_sharpen)
SANE_OPTION_ID_IMPLEMENT(ex_paper)
SANE_OPTION_ID_IMPLEMENT(ex_paper_lateral)
SANE_OPTION_ID_IMPLEMENT(ex_auto_paper_size)
SANE_OPTION_ID_IMPLEMENT(ex_is_paper_auto_crop)
SANE_OPTION_ID_IMPLEMENT(ex_text_direction)
SANE_OPTION_ID_IMPLEMENT(ex_duplex)
SANE_OPTION_ID_IMPLEMENT(ex_fill_background)
SANE_OPTION_ID_IMPLEMENT(ex_discard_blank_page)
SANE_OPTION_ID_IMPLEMENT(ex_discard_blank_receipt)
SANE_OPTION_ID_IMPLEMENT(ex_is_page_fold)
SANE_OPTION_ID_IMPLEMENT(ex_color_filter)
SANE_OPTION_ID_IMPLEMENT(ex_color_enhance)
SANE_OPTION_ID_IMPLEMENT(ex_final_compression)
SANE_OPTION_ID_IMPLEMENT(ex_final_format)
SANE_OPTION_ID_IMPLEMENT(ex_serial)
SANE_OPTION_ID_IMPLEMENT(ex_to_be_scan)
SANE_OPTION_ID_IMPLEMENT(ex_scan_with_hole)
SANE_OPTION_ID_IMPLEMENT(ex_device_code)
SANE_OPTION_ID_IMPLEMENT(ex_power)
SANE_OPTION_ID_IMPLEMENT(ex_hardware_version)
SANE_OPTION_ID_IMPLEMENT(ex_ip)

COM_API_IMPLEMENT(scanner, void, twain_set_transfer(twain_xfer xfer))
{
	xfer_ = xfer;
}
COM_API_IMPLEMENT(scanner, void, twain_set_compression(SANE_CompressionType compression, void* detail))
{
	img_fmt_.compress.compression = compression;
	img_fmt_.compress.detail = detail;
}
COM_API_IMPLEMENT(scanner, int, twain_get_config(char* buf, size_t* len))
{
	std::string	cont(cfg_->to_text_stream());

	if (*len < cont.length())
	{
		*len = cont.length() + 4;

		return SCANNER_ERR_INSUFFICIENT_MEMORY;
	}
	strcpy(buf, cont.c_str());

	return SCANNER_ERR_OK;
}
COM_API_IMPLEMENT(scanner, int, twain_set_config(char* buf, size_t len))
{
	if(cfg_->load_from_mem(buf))
	{
		update_config();
		apply_config();

		return SCANNER_ERR_OK;
	}

	return SCANNER_ERR_DATA_DAMAGED;
}


// ui ...
COM_API_IMPLEMENT(scanner, bool, ui_show_main(HWND parent))
{
	return false;
}
COM_API_IMPLEMENT(scanner, bool, ui_show_setting(HWND parent, bool with_scan, bool indicator))
{
	SANEAPI	api = { NULL };

	if (with_scan)
	{
		events_.clear();
		images_.clear();
		scan_msg_ = "OK";
		scan_err_ = false;
	}

	api.sane_cancel_api = inner_sane_cancel;
	api.sane_close_api = inner_sane_close;
	api.sane_control_option_api = inner_sane_control_option;
	api.sane_get_devices_api = inner_sane_get_devices;
	api.sane_get_option_descriptor_api = inner_sane_get_option_descriptor;
	api.sane_get_parameters_api = inner_sane_get_parameters;
	api.sane_get_select_fd_api = inner_sane_get_select_fd;
	api.sane_io_control_api = inner_sane_io_control;
	api.sane_open_api = inner_sane_open;
	api.sane_read_api = inner_sane_read;
	api.sane_set_io_mode_api = inner_sane_set_io_mode;
	api.sane_start_api = inner_sane_start;
	api.sane_strstatus_api = inner_sane_strstatus;

	size_t	pid = scanner_name_.find(L" - ");
	if (pid == -1)
		pid = scanner_name_.length();
	setting_.reset(new dlg_setting(parent, &api, handle_, with_scan, scanner_name_.substr(0, pid).c_str()));
	setting_->set_ui_event_notify(&scanner::ui_callback, this);
	setting_->set_config(cfg_, (cfg_path_ + scanner_name_.substr(0, pid)).c_str());
	cfg_->begin_setting();
	indicator_.reset();
	if (indicator)
	{
		indicator_.reset(new dlg_indicator(setting_->hwnd()));
		indicator_->set_ui_event_notify(&scanner::ui_callback, this);
	}
	setting_->show(true);

	return true;
}
COM_API_IMPLEMENT(scanner, bool, ui_show_progress(HWND parent))
{
	if (setting_.get() && IsWindowVisible(setting_->hwnd()))
		parent = setting_->hwnd();
	else if (!IsWindow(parent))
		parent = callback::find_main_wnd();

	indicator_.reset(new dlg_indicator(parent));
	indicator_->set_ui_event_notify(&scanner::ui_callback, this);
	indicator_->show(true);

	return true;
}
COM_API_IMPLEMENT(scanner, void, ui_hide(void))
{
	if (indicator_.get())
		indicator_.reset();
	if (setting_.get())
		setting_.reset();
}
COM_API_IMPLEMENT(scanner, bool, ui_is_ok(void))
{
	return true;
}



// called from device-layer ...
int scanner::handle_device_event(int ev_code, void* data, unsigned int* len)
{
	if (ev_code == SANE_EVENT_WORKING)
	{
		if (indicator_.get())
			indicator_->notify_working();
		else
			on_ui_event(ev_code, (void*)ev_code);

		log_info(L"Scanning ...\r\n", 0);
	}
	else if (ev_code == SANE_EVENT_IMAGE_OK)
	{
		SANE_Image* simg = (SANE_Image*)data;
		scanned_img* img = NULL;
		wchar_t	name[40] = { 0 };

		swprintf_s(name, _countof(name) - 1, L"img_%05u.bmp", ++img_ind_);
		img = new scanned_img(handle_, simg->header, simg->data, simg->bytes, simg->flag.dpi, (tmp_path_ + name).c_str(), xfer_, &img_fmt_);
		if (img->bytes() /*>= simg->bytes*/)
		{
			img->set_image_status((SANE_Image_Statu)simg->flag.statu);
			images_.save(img);
		}
		else
		{
			img->release();
		}
		if (indicator_.get())
			indicator_->notify_data_arrived(true);

		{
			wchar_t	msg[128] = { 0 };
			swprintf_s(msg, _countof(msg) - 1, L"New image(%u) received with %u bytes\r\n", img_ind_, simg->bytes);
			log_info(msg, 0);
		}
	}
	else if (ev_code == SANE_EVENT_USB_DATA_RECEIVED)
	{
		if (indicator_.get())
			indicator_->notify_data_arrived(false);
	}
	else if (ev_code == SANE_EVENT_SCAN_FINISHED)
	{
		err_ = *len;
		if (indicator_.get())
			indicator_->notify_scan_over((char*)data, *len != SCANNER_ERR_OK);
		else
		{
			if (*len)
			{
				std::wstring msg(local_trans::a2u((char*)data, CP_UTF8));
				if(!IsWindow(app_wnd_))
					callback::bring_message_box_topmost(L"\u9519\u8BEF");
				MessageBoxW(app_wnd_, msg.c_str(), L"\u9519\u8BEF", MB_OK);
			}
			on_ui_event(ev_code, (void*)ev_code); 
		}
		// is_scanning_ = false;

		{
			wchar_t	msg[128] = { 0 };
			swprintf_s(msg, _countof(msg) - 1, L"Scan finished with error: %u\r\n", *len);
			log_info(msg, 0);
		}
	}

	return 0;
}
int scanner::last_error(void)
{
	return err_;
}















//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// log ...
#include <direct.h>

std::mutex	g_lock_;
std::string	g_path_file_("");
FILE* g_file_ = NULL;

void init_log(void)
{
	char* tmp = getenv("LOCALAPPDATA");
	if (tmp)
	{
		std::string	path(tmp);
		char		name[MAX_PATH] = { 0 }, * last = NULL;

		path += std::string("\\") + PRODUCT_VENDOR + "Scan\\Log\\";
		mkdir(path.c_str());
		GetModuleFileNameA(NULL, name, _countof(name) - 1);
		last = strrchr(name, '\\');
		if (last++ == NULL)
			last = name;
		path += last;
		path += "_twain.log";
		g_file_ = fopen(path.c_str(), "a+b");
		g_path_file_ = path;
	}
	else
	{
		char		name[MAX_PATH] = { 0 }, * last = NULL;
		std::string	path("");

		GetModuleFileNameA(NULL, name, _countof(name) - 1);
		path = std::string(name) + "_twain.log";
		g_file_ = fopen(path.c_str(), "a+b");
		g_path_file_ = path;
	}
	if (g_file_)
	{
		fseek(g_file_, 0, SEEK_END);
		if (ftell(g_file_))
		{
			std::wstring sep(L"\r\n\r\n\r\n=================================================\r\n");
			fwrite(sep.c_str(), 2, sep.length(), g_file_);
		}
		else
		{
			unsigned short bom = 0x0feff;
			fwrite(&bom, sizeof(bom), 1, g_file_);
		}

		wchar_t	ts[128] = { 0 }, now[40] = { 0 };

		get_current_time_w(now);
		swprintf_s(ts, _countof(ts) - 1, L"==================%s==================\r\n", now);
		fwrite(ts, 2, lstrlenW(ts), g_file_);
	}
}
void close_log(void)
{
	if (g_file_)
		fclose(g_file_);
	g_file_ = NULL;
}
void log(const wchar_t* info)
{
	if (g_file_)
	{
		std::lock_guard<std::mutex>	lock(g_lock_);

		fwrite(info, 2, lstrlenW(info), g_file_);
		fflush(g_file_);
		if (ftell(g_file_) > 10 * 1024 * 1024)
		{
			fclose(g_file_);
			remove(g_path_file_.c_str());
			g_file_ = fopen(g_path_file_.c_str(), "a+b");
			if (g_file_)
			{
				unsigned short bom = 0x0feff;
				wchar_t	ts[128] = { 0 }, now[40] = { 0 };

				get_current_time_w(now);
				swprintf_s(ts, _countof(ts) - 1, L"==================%s (Truncated when size > 10MB) ==================\r\n", now);
				fwrite(&bom, sizeof(bom), 1, g_file_);
				fwrite(ts, 2, lstrlenW(ts), g_file_);
			}
		}
	}
}


//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// exports 
extern "C"
{
#ifdef EXPORT_SANE_API
	__declspec(dllexport)
#else
	__declspec(dllimport)
#endif
		int __stdcall initialize(void* reserve)
	{
		init_log();
		hg_sane_middleware::set_callback(callback::sane_event_callback, NULL);
		hg_sane_middleware::instance();

		return SANE_STATUS_GOOD;
	}
#ifdef EXPORT_SANE_API
	__declspec(dllexport)
#else
	__declspec(dllimport)
#endif
		int __stdcall open_scanner(SCANNERID scanner_id, ISaneInvoker** invoker)
	{
		if (!invoker)
			return SCANNER_ERR_INVALID_PARAMETER;

		if (!is_scanner_online(scanner_id))
			return SCANNER_ERR_DEVICE_NOT_FOUND;

		scanner* scn = new scanner(scanner_id);
		if (scn->last_error() == SCANNER_ERR_OK)
		{
			*invoker = dynamic_cast<ISaneInvoker*>(scn);

			return 0;
		}
		else
		{
			int ret = scn->last_error();

			scn->release();
			*invoker = NULL;

			return ret;
		}
	}
#ifdef EXPORT_SANE_API
	__declspec(dllexport)
#else
	__declspec(dllimport)
#endif
		bool __stdcall is_scanner_online(SCANNERID scanner_id)
	{
		std::vector<std::string>	que;

		scanner::get_scanner_name(scanner_id, que);

		return !que.empty();
	}
#ifdef EXPORT_SANE_API
	__declspec(dllexport)
#else
	__declspec(dllimport)
#endif
		int __stdcall uninitialize(void* reserve)
	{
		hg_sane_middleware::set_callback(NULL, NULL);
		hg_sane_middleware::clear();
		close_log();

		return 0;
	}
#ifdef EXPORT_SANE_API
	__declspec(dllexport)
#else
	__declspec(dllimport)
#endif
		void __stdcall log_info(const wchar_t* info, int level)
	{
		log(info);
	}

}