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 <twain_user/twainui.h>

#include "DlgSetting.h"
#include "gb_json.h"
#include "../../sdk/include/lang/app_language.h"
#include <functional>
#include "DlgIndicator.h"
#include <twain_user/twainui.h>
#pragma comment(lib, "Shlwapi.lib")


#define START_SCAN_IN_THREAD

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;										\
		sane_ids_[(sane_option_id)SANE_OPT_ID_##name] = 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(        // 娉ㄥ唽鍥炶皟鐨勫璞★紝闇€瑕佷繚璇佽鍥炶皟鏄绾跨▼瀹夊叏鐨?
		SANE_Handle hdev	    // 浜х敓浜嬩欢鐨勮澶囧彞鏌?
		, int code	    	    // 鍥炶皟浜嬩欢浠ｇ爜
		, void* data            // 鍥炶皟浜嬩欢鏁版嵁锛屾牴鎹簨浠朵唬鐮佹湁鎵€涓嶅悓锛屽弬鐓у叿浣撲簨浠跺畾涔?	
		, unsigned int* len     // 鏁版嵁闀垮害锛堝瓧鑺傦級锛屾垨鑰卐vent_data鐨勭紦鍐插尯闀垮害锛岃缁嗚鐪嬬浉搴旂殑浜嬩欢浠ｇ爜
		, void* param 		    // 鐢ㄦ埛鑷畾涔夋暟鎹紝涓庤皟鐢╯ane_init_ex浼犲叆鏃剁殑淇濇寔涓€鑷?
	)                      // 杩斿洖鍊间緷涓嶅悓鐨勪簨浠朵唬鐮佽€屽畾锛岄€氬父涓衡€?鈥?
	{
		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, 1);

			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}
				, {SANE_STD_OPT_NAME_FOLD_TYPE			   , OPTION_TITLE_DZMS}
				, {SANE_STD_OPT_NAME_COLOR_CORRECTION      , OPTION_TITLE_SPJZ}
	},
		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"}	// 榛戠櫧鍥惧儚鍙嶈壊杈撳嚭锛堟甯搁鑹蹭负锛?-榛戣壊锛?-鐧借壊锛?
					,   {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"}																																						// 鐏板害鎴栭粦鐧藉浘鍍?- 闄よ壊
					, {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"}																																															// 鑷姩鎼撶焊寮哄害
					,   {SANE_STD_OPT_NAME_FEED_STRENGTH_VALUE , "\346\220\223\347\272\270\351\230\210\345\200\274"}																																																					// "   鎼撶焊闃堝€?
	};
	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;
	}

	static const char* __stdcall language_trans(const char* in, bool from_hz, void* param)
	{
		if (from_hz)
			return from_default_language(in, nullptr);
		else
			return to_default_language(in, nullptr);
	}


	// UI ...
	//
	// events code, see SANE_Event
	// 
	// callback events: SANE_EVENT_UI_CLOSE_CANCEL/SANE_EVENT_UI_CLOSE_NORMAL/SANE_EVENT_UI_SCAN_COMMAND/SANE_EVENT_UI_CLOSE_SETTING
	// 
	// notify events:	SANE_EVENT_WORKING			- void*: unused, be NULL, flag - unused, be 0
	//					SANE_EVENT_SCAN_FINISHED	- void*: (utf8*)message,  flag - error code (0 is success)
	//					SANE_EVENT_USB_DATA_RECEIVED- void* unused, be NULL,  flag - unused, be 0
	//					SANE_EVENT_IMAGE_OK			- void* unused, be NULL,  flag - unused, be 0 
	static HMODULE hui = NULL;
	int (*choose_scanner)(const std::vector<DEVQUEUI>& devs) = NULL;	// blocked. return selected DEVQUE::id or -1 if user cancelled
	char* (*apply_current_config)(const char* dev_name, SANE_Handle device, LPSANEAPI api) = NULL;	// 搴旂敤璁惧鐨勫綋鍓嶉厤锟?
	int (*show_setting_ui)(SANE_Handle device, HWND parent, LPSANEAPI api, const char* devname, bool with_scan, std::function<void(ui_result)> callback) = NULL;
	int (*show_progress_ui)(HWND parent, std::function<void(ui_result)> callback, std::function<void(int/*event*/, void*/*msg*/, int/*flag*/)>* notify) = NULL;
	int (*show_messagebox_ui)(HWND parent, int event, void* msg, int flag) = NULL;
	int (*close_ui)(int) = NULL;
	int (*apply_given_config)(const char* content, SANE_Handle device, LPSANEAPI api) = NULL;    // 搴旂敤鎸囧畾鐨勯厤缃紝content涓洪厤缃暟鎹祦
	char* (*get_config_content)(const char* dev_name, const char* name) = NULL;
	void (*twain_ui_free)(void* buf) = NULL;


	static void init_ui(void)
	{
		std::string	root(hg_sane_middleware::sane_path());

		root += OEM_SHORT_NAME_E;
		root += "TwainUI.dll";
		hui = LoadLibraryExA(root.c_str(), NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
		if (!hui)
		{
			std::wstring	info(L"Load '" + local_trans::a2u(root.c_str(), CP_UTF8));

			info += L"' failed: " + std::to_wstring(GetLastError()) + L"\r\n";

			log_info(info.c_str(), 1);
		}
		else
		{
#define GET_API(api)		\
	proc = (FARPROC*)&api;	\
	*proc = GetProcAddress(hui, #api);

			FARPROC* proc = NULL;

			GET_API(choose_scanner);
			GET_API(apply_current_config);
			GET_API(show_setting_ui);
			GET_API(show_progress_ui);
			GET_API(show_messagebox_ui);
			GET_API(close_ui);
			GET_API(twain_ui_free);
			GET_API(apply_given_config);
			GET_API(get_config_content);
		}
	}
	static void unint_ui(void)
	{
		if (close_ui)
			close_ui(UI_UNLOAD_MODULE);
		choose_scanner = NULL;
		apply_current_config = NULL;
		show_setting_ui = NULL;
		show_progress_ui = NULL;
		show_messagebox_ui = NULL;
		close_ui = NULL;
		twain_ui_free = NULL;
		apply_given_config = NULL;
		get_config_content = NULL;
		if (hui)
		{
			FreeLibrary(hui);
			hui = NULL;
		}
	}


	// check thread whether has window
	static BOOL WINAPI check_window(HWND hwnd, LPARAM lp)
	{
		LPDWORD id = (LPDWORD)lp;

		if (GetWindowThreadProcessId(hwnd, NULL) == id[0])
		{
			id[1] = 1;

			return FALSE;
		}

		return TRUE;
	}
	static bool is_thread_has_window(DWORD thread_id = -1)
	{
		if (thread_id == -1)
			thread_id = GetCurrentThreadId();

		DWORD	param[] = { thread_id, 0 };
		EnumWindows(check_window, (LPARAM)param);

		return param[1];
	}
}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// 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), user_cancel_(false)
								, max_img_mem_(1 * 1024), twain_set_(false), ev_cnt_(0), is_bIndicator(false), is_show_setting_(false)
{
	ui_notify = std::function<void(int, void*, int)>();

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

	if (!callback::show_setting_ui)
	{
		cfg_ = new gb::scanner_cfg();
		cfg_->set_language_transform(&callback::language_trans, NULL);
	}

	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;

	int mem_limit = GetPrivateProfileIntW(L"mem", L"max_img", 0, (cfg_path_ + L"debug.cfg").c_str());
	if (mem_limit > 0)
	{
		// this value is same as driver memory limit ...
		max_img_mem_ = mem_limit;
	}
	err_ = open();
}
scanner::~scanner()
{
	close();
	if (thread_starting_.get() && thread_starting_->joinable())
		thread_starting_->join();
	thread_starting_.reset();

	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 (GET_SCANNER_PID(serial) == 0x138 ||
				GET_SCANNER_PID(serial) == 0x238 ||
				GET_SCANNER_PID(serial) == 0x303 ||
				GET_SCANNER_PID(serial) == 0x404)	// OEM_CANGTIAN
				return true;
		}

		return false;
	}
	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;
	}
	else if (vid == PRODUCT_VENDOR_DL)
	{
		if (GET_SCANNER_VID(serial) == PRODUCT_VENDOR_DL)
		{
			if (GET_SCANNER_PID(serial) == 0x401C)
			{
				return pid == 0x401C || pid == 0x401D || pid == 0x401E || pid == 0x401F || pid == 0x4020 || pid == 0x4021 || pid == 0x4022;
			}
			else if (GET_SCANNER_PID(serial) == 0x4015)
			{
				return pid == 0x4015 || pid == 0x4016 || pid == 0x4017 || pid == 0x4018;
			}
			else if (GET_SCANNER_PID(serial) == 0x4019)
			{
				return pid == 0x4019 || pid == 0x401A || pid == 0x401B;
			}
		}
		return false;
	}

	return true;
}
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, (const void*)sn);

	if (desc)
		return desc->type == SANE_TYPE_FIXED;
	else
		return false;
}
void __stdcall scanner::apply_scheme(gb::sane_config_schm* schm, void* param)
{
	((scanner*)param)->apply_scheme(schm);
}

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

int scanner::transfer_id(int id)
{
	if (id > SANE_OPT_ID_BASE)
	{
		if (sane_ids_.count((sane_option_id)id) == 0)
			id = -1;
		else
			id = sane_ids_[(sane_option_id)id];
	}

	return id;
}
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::lang_trans_between_hz936(L"\u534E\u9AD8\u626B\u63CF\u4EEA\u2014");
	}
	else if (scanner_name_.find(L"LANXUMSCAN ") != std::wstring::npos)
	{
		old = local_trans::lang_trans_between_hz936(L"\u7ACB\u601D\u8FB0\u626B\u63CF\u4EEA\u2014");
		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(), 1);
		MoveFileW((cfg_path_ + old).c_str(), (cfg_path_ + scanner_name_.substr(0, pos)).c_str());
	}
}
void scanner::update_config(void)
{
	if (!cfg_)
		return;

	gb::sane_config_schm* schm = cfg_->get_scheme();
	std::string	notice("");

	if (schm)
	{
		//schm->update(&scanner::is_option_float, handle_, &callback::option_title_2_name, &notice);
		//if (notice.length())
		//{
		//	std::wstring	msg(local_trans::lang_trans_between_hz936(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") + L"\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(local_trans::lang_trans_between_hz936(L"\u52A0\u8F7D\u914D\u7F6E").c_str());
		//	MessageBoxW(app_wnd_, msg.c_str(), local_trans::lang_trans_between_hz936(L"\u52A0\u8F7D\u914D\u7F6E").c_str(), MB_OK | MB_ICONINFORMATION);
		//}
		schm->release();
	}
}
void scanner::load_config(const wchar_t* file)
{
	if (cfg_)
	{
		cfg_->load_file(local_trans::u2a(file).c_str());
		update_config();
	}
}
void scanner::save_config(const wchar_t* file)
{
	if(cfg_)
		cfg_->save(local_trans::u2a(file).c_str());
}
void scanner::apply_config(void)
{
	if (callback::apply_current_config)
	{
		char* cfg = callback::apply_current_config(local_trans::u2a(scanner_name_.c_str(), CP_UTF8).c_str(), handle_, &sane_api_);
		if (cfg && callback::twain_ui_free)
			callback::twain_ui_free(cfg);
	}
	else if (cfg_)
	{
		gb::sane_config_schm* schm = cfg_->get_scheme();

		if (!schm)
			return;

		apply_scheme(schm);
		schm->release();
	}
}
void scanner::on_ui_event(int uev, void* sender)
{
	if (uev == SANE_EVENT_UI_CLOSE_SETTING)
	{
		// setting UI closed ...
		is_scanning_ = is_show_setting_ = false;
		if (setting_.get())
			setting_.reset();
	}
	else if (uev == SANE_EVENT_UI_CLOSE_NORMAL)
	{
		// scan complete
		if (indicator_.get())
			indicator_.reset();

		// FIX on 2023-05-30: restore scan finished status, whether close UI is up to APP
		//is_scanning_ = is_show_setting_;
		is_scanning_ = false;
		ui_notify = std::function<void(int, void*, int)>();
	}
	else if (uev == SANE_EVENT_UI_CLOSE_CANCEL)
	{
		// scan cancelled 
		if (indicator_.get())
			indicator_.reset();

		stop();	// nothing to do, the finishing work do in SANE_EVENT_SCAN_FINISHED
	}
	else if (uev == SANE_EVENT_SCAN_FINISHED)
	{
		// FIX on 2023-05-30: restore scan finished status, whether close UI is up to APP
		//is_scanning_ = is_show_setting_;
		is_scanning_ = false;
		ui_notify = std::function<void(int, void*, int)>();
	}

	int(__stdcall * h)(int, void*) = scanner_ev_handler_;
	if (h)
	{
		h(uev, evh_param_);
	}
	return;

	events_.save(uev, sizeof(uev));

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

	std::vector<DEVQUEUI>	devs;
	std::string	sel("");
	int			id = 1;

	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())
			{
				DEVQUEUI	dev;
				dev.id = id++;
				dev.name = scanners[i];
				dev.sn = sn;
				devs.push_back(dev);
			}
			hg_sane_middleware::instance()->close_device(h);
		}
	}

	if (devs.size() == 0)
		sel = scanners[0];
	else if (devs.size() == 1)
		sel = devs[0].name;
	else if (callback::choose_scanner)
	{
		id = callback::choose_scanner(devs);
		if (id != -1)
		{
			for (auto& v : devs)
			{
				if (v.id == id)
				{
					sel = v.name;
					break;
				}
			}
		}
	}
	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();

		// check roller life ...
		SANE_Int cnt = 0, life = 0;
		if (hg_sane_middleware::instance()->get_cur_value(handle_, (void*)SANE_OPT_ID_ROLLER_COUNT, &cnt) &&
			hg_sane_middleware::instance()->set_option(handle_, (void*)SANE_OPT_ID_ROLLER_LIFE, SANE_ACTION_GET_VALUE, &life, NULL) == SANE_STATUS_GOOD)
			//hg_sane_middleware::instance()->get_cur_value(handle_, (void*)SANE_OPT_ID_ROLLER_LIFE, &life))
		{
			if (cnt >= life / 100 * 99)	// 99%
			{
				if (callback::show_messagebox_ui)
				{
					// 绾歌疆鎼撶焊娆℃暟宸茶秴杩囪璁′娇鐢ㄨ寖鍥达紝鎵弿杩囩▼涓悡绾稿け璐ャ€佹鏂溿€佹悡澶氬紶绛夊紓甯搁娆″彲鑳戒細鏄庢樉澧炲锛岃娉ㄦ剰鍙婃椂娓呮磥銆佸苟鑱旂郴璁惧渚涘簲鍟嗚喘涔版浛鎹㈢焊杞紒
					std::wstring roller_msgw(local_trans::lang_trans_between_hz936(L"\u7EB8\u8F6E\u6413\u7EB8\u6B21\u6570\u5DF2\u8D85\u8FC7\u8BBE\u8BA1\u4F7F\u7528\u8303\u56F4\uFF0C\u626B\u63CF\u8FC7\u7A0B\u4E2D\u6413\u7EB8\u5931\u8D25\u3001\u6B6A\u659C\u3001\u6413\u591A\u5F20\u7B49\u5F02\u5E38\u9891\u6B21\u53EF\u80FD\u4F1A\u660E\u663E\u589E\u591A\uFF0C\u8BF7\u6CE8\u610F\u53CA\u65F6\u6E05\u6D01\u3001\u5E76\u8054\u7CFB\u8BBE\u5907\u4F9B\u5E94\u5546\u8D2D\u4E70\u66FF\u6362\u7EB8\u8F6E\uFF01"));
					std::string	roller_msg(local_trans::u2a(roller_msgw.c_str(), CP_UTF8));
					app_wnd_ = callback::find_main_wnd();
					callback::show_messagebox_ui(app_wnd_, ret, (void*)&roller_msg[0], 0);
				}
			}
		}
	}
	else
	{
		if (callback::show_messagebox_ui)
		{
			app_wnd_ = callback::find_main_wnd();
			callback::show_messagebox_ui(app_wnd_, ret, (void*)hg_scanner_err_description(ret), 0);
		}
		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(local_trans::lang_trans_between_hz936(CONST_STRING_START_FAILED).c_str());
			MessageBoxW(app_wnd_, msg.c_str(), local_trans::lang_trans_between_hz936(CONST_STRING_START_FAILED).c_str(), 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)

#define INIT_FIXED_IDS(id)				\
	sane_ids_[SANE_OPT_ID_##id] = SANE_OPT_ID_##id;

	INIT_FIXED_IDS(HISTORY_COUNT);
	INIT_FIXED_IDS(DRIVER_VERSION);
	INIT_FIXED_IDS(MANUFACTURER);
	INIT_FIXED_IDS(COPYRIGHT);
	INIT_FIXED_IDS(CO_URL);
	INIT_FIXED_IDS(CO_TEL);
	INIT_FIXED_IDS(CO_ADDR);
	INIT_FIXED_IDS(CO_GPS);
	INIT_FIXED_IDS(HELP);
	INIT_FIXED_IDS(VID);
	INIT_FIXED_IDS(PID);
	INIT_FIXED_IDS(DEV_NAME);
	INIT_FIXED_IDS(DEV_FAMILY);
	INIT_FIXED_IDS(LOGIN);
	INIT_FIXED_IDS(LOGOUT);
	INIT_FIXED_IDS(ROLLER_COUNT);
	INIT_FIXED_IDS(DRIVER_LOG);
	INIT_FIXED_IDS(DEVICE_LOG);
	INIT_FIXED_IDS(ROLLER_LIFE);
	INIT_FIXED_IDS(DEVICE_MAC_ADDR);
	INIT_FIXED_IDS(CUSTOM_GAMMA);
	INIT_FIXED_IDS(MOTOR_VER);

	while ((desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, (const void*)op_id)))
	{
		void* val = hg_sane_middleware::instance()->get_def_value(handle_, (void*)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_)
			{
				if (desc->type == SANE_TYPE_STRING)
				{
					std::string	deflan(to_default_language((char*)val, nullptr));
					cfg_->set_default_value(op_id, desc->name, desc->title, &deflan[0], deflan.length(), desc->type);
				}
				else
					cfg_->set_default_value(op_id, desc->name, desc->title, (char*)val, len, desc->type);
			}
			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)
		else SET_OPT_ID(color_correction, COLOR_CORRECTION, extension_none)
		else SET_OPT_ID(language, LANGUAGE, 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;	\
		ea.base_ind = -1;						\
		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)
	{
		// 鍏煎鑰佺殑闄ゅ瓟绠楁硶
		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_, (const void*)scan_mode_id_);
		char* buf = new char[parent->size + 4];

		memset(buf, 0, parent->size);
		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)scan_mode_id_, buf);
		handled = compare_sane_opt(local_trans::lang_trans_between_hz936(OPTION_VALUE_SMZS_LXSM, true, nullptr), buf);
		delete[] buf;
		if (handled)
		{
			int count = -1;
			value_role role = VAL_ROLE_CURRENT;
			buf = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)scan_mode_id_);
			if (compare_sane_opt(local_trans::lang_trans_between_hz936(OPTION_VALUE_SMZS_LXSM, true, nullptr), buf))
				role = value_role(role | VAL_ROLE_DEFAULT);
			local_utility::free_memory(buf);

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

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

	if (sn == scan_count_id_)
	{
		SANE_Option_Descriptor* parent = hg_sane_middleware::instance()->get_option_descriptor(handle_, (void*)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_, (void*)scan_mode_id_, val);
		if (compare_sane_opt(local_trans::lang_trans_between_hz936(OPTION_VALUE_SMZS_LXSM, true, nullptr), val))
		{
			if (*(int*)data != -1)
			{
				strcpy(val, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMZS_SMZDZS, true, nullptr));
				*err = hg_sane_middleware::instance()->set_option(handle_, (void*)scan_mode_id_, SANE_ACTION_SET_VALUE, val, &after);
			}
		}
		else if (*(int*)data == -1)
		{
			strcpy(val, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMZS_LXSM, true, nullptr));
			*err = hg_sane_middleware::instance()->set_option(handle_, (void*)scan_mode_id_, SANE_ACTION_SET_VALUE, val, &after);
		}
		delete[] val;
	}

	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_, (void*)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;
}
int scanner::set_is_multiout(bool enable)
{
	int	ret = SCANNER_ERR_OK;

	if (is_multiout_id_ > 0)
	{
		SANE_Bool	multi = SANE_FALSE;
		SANE_Int	after = 0;

		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)is_multiout_id_, &multi);	// parent item ...
		if (enable ^ (multi == SANE_TRUE))
		{
			multi = enable ? SANE_TRUE : SANE_FALSE;
			ret = hg_sane_middleware::instance()->set_option(handle_, (void*)is_multiout_id_, SANE_ACTION_SET_VALUE, &multi, &after);
			after = 0;
		}
	}

	return ret;
}

int scanner::thread_start(void)
{
	int 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
	{
		// display error message on progress UI, may be closed immediately by APP, so we hide progress UI and call message_box ...
		// 
#ifdef START_SCAN_IN_THREAD
		if (callback::show_progress_ui && is_bIndicator && ui_notify)
		{
			int ev = SANE_EVENT_WORKING;
		
			ui_notify(SANE_EVENT_SCAN_FINISHED, (void *)hg_scanner_err_description(ret), ret);
		}
		else
#endif
		{
			if (callback::close_ui)
				callback::close_ui(UI_INDICATOR);

			if (callback::show_messagebox_ui)
			{
				callback::show_messagebox_ui(app_wnd_, ret, (void*)hg_scanner_err_description(ret), 0);
			}
			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(local_trans::lang_trans_between_hz936(CONST_STRING_START_FAILED).c_str());
				MessageBoxW(app_wnd_, msg.c_str(), local_trans::lang_trans_between_hz936(CONST_STRING_START_FAILED).c_str(), MB_OK | MB_ICONERROR);
			}
			is_scanning_ = false;
		}
	}
	prev_start_result_ = ret;

	return ret;
}

scanner::EXAPIPOS scanner::find_ex_api(int op_id)
{
	return std::find(ex_opts_.begin(), ex_opts_.end(), op_id);
}
void scanner::apply_scheme(gb::sane_config_schm* schm)
{
	// restore ...
	hg_sane_middleware::instance()->io_control(handle_, IO_CTRL_CODE_RESTORE_SETTINGS, nullptr, nullptr);

	if (!schm)
		return;

	std::string	n(""), v(""), ver(schm->get_version());

	if (schm->first_config(n, v))
	{
		do
		{
			int	id = schm->id_from_name(n.c_str());
			if (id == -1)
			{
				if (gb::sane_config_schm::is_option_data(n))
				{
					id = schm->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, 1);
						}
					}
				}
			}
			else
			{
				v = from_default_language(v.c_str(), nullptr);
				void* data = &v[0];
				SANE_Fixed	fixed = 0;
				const SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, (const void*)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_, (const void*)id, SANE_ACTION_SET_VALUE, data, &after);

					if (buf)
						delete[] buf;
				}
			}
		} while (schm->next_config(n, v));
	}
}

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

	hg_sane_middleware::instance()->get_cur_value(handle_, (void*)is_multiout_id_, &parent);
	if (setv)
	{
		char* cur = (char*)hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id),
			* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
		int now = sane_opt_trans::multiout_value_to_twain(cur),
			init = sane_opt_trans::multiout_value_to_twain(def),
			val = 0;

		local_utility::free_memory(def);
		local_utility::free_memory(cur);

		{
			// parent item ...
			if (!parent)
				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 (val == init)
					role = (value_role)(role | VAL_ROLE_DEFAULT);
				if (!setv(&val, role, VAL_LIMIT_ENUM, 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, VAL_LIMIT_ENUM, 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"))
		//{
		//	ret = set_is_multiout(true);
		//	if (ret == SANE_STATUS_GOOD)
		//	{
				strcpy(val, in);
				ret = hg_sane_middleware::instance()->set_option(handle_, (void*)base_id, SANE_ACTION_SET_VALUE, val, &after);
		//	}
		//}
		//else
		//{
		//	// disable multi-out, let multiout type aside 
		//	ret = set_is_multiout(false);
		//}
		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_, (void*)base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

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

		local_utility::free_memory(def);
		len = sane_opt_trans::auto_color_type_to_twain(buf);
		set_cur_and_def_value<int>(len, init, setv, data);
	}
	else
	{
		SANE_Int	after = 0;

	//	ret = set_is_multiout(false);
		if (ret == SCANNER_ERR_OK)
		{
			strcpy(buf, sane_opt_trans::auto_color_type_from_twain(*(int*)data));
			ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)base_id);

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

		local_utility::free_memory(def);
		local_utility::free_memory(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, VAL_LIMIT_ENUM, data))
						break;
				}
			}
			else
				set_cur_and_def_value<int>(now, init, setv, data);
		} while (0);
	}
	else
	{
		SANE_Int	after = 0;

	//	ret = set_is_multiout(false);
		if (ret == SCANNER_ERR_OK)
		{
			char* val = new char[desc->size];
			const char* in = sane_opt_trans::color_mode_from_twain(*(int*)data);

			strcpy(val, in);
			ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)base_id);

	if (setv)
	{
		char* cur = (char*)hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id),
			* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
		int now = sane_opt_trans::multiout_value_to_twain(cur),
			init = sane_opt_trans::sharpen_to_twain(def),
			val = 0;

		local_utility::free_memory(def);
		local_utility::free_memory(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, VAL_LIMIT_ENUM, 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;

		strcpy(val, in);
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)base_id, buf);
		char* def = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)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, VAL_LIMIT_ENUM, 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_, (void*)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_, (void*)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_, (void*)base_id, buf);
	lateral_swap = sane_opt_trans::switch_paper_lateral(buf);
	lateral = sane_opt_trans::is_paper_lateral(buf);
	if (setv)
	{
		set_cur_and_def_value<bool>(lateral, false, setv, 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_, (void*)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, local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_A4HX, true, nullptr));
			ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
	if (setv)
	{
		char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
		bool yes = strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_PPYSCC, true, nullptr)) == 0,
			def = strcmp(init, local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_PPYSCC, true, nullptr)) == 0;

		local_utility::free_memory(init);
		set_cur_and_def_value<bool>(yes, def, setv, data);
	}
	else
	{
		SANE_Int after = 0;
		strcpy(buf, *(bool*)data ? local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_PPYSCC, true, nullptr) : local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_A4, true, nullptr));
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)base_id);
	int len = desc->size + 4;
	char* buf = new char[len];

	memset(buf, 0, len);
	hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
	if (setv)
	{
		char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
		bool yes = strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_ZDSMCCZDCQ, true, nullptr)) == 0,
			def = strcmp(init, OPTION_VALUE_ZZCC_ZDSMCCZDCQ) == 0;
		
		local_utility::free_memory(init);
		set_cur_and_def_value<bool>(yes, def, setv, data);
	}
	else
	{
		SANE_Int after = 0;
		strcpy(buf, *(bool*)data ? local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_ZDSMCCZDCQ, true, nullptr) : local_trans::lang_trans_between_hz936(OPTION_VALUE_ZZCC_ZDSMCC, true, nullptr));
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)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_, (void*)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, VAL_LIMIT_ENUM, 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_, (void*)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_, (void*)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_, (void*)base_id);

		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
		set_cur_and_def_value<bool>(strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_SM, true, nullptr)) == 0, strcmp(init, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_SM, true, nullptr)) == 0, setv, data);
		local_utility::free_memory(init);
	}
	else
	{
		strcpy(buf, val ? local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_SM, true, nullptr) : local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_DM, true, nullptr));
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)base_id);
		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
		val = strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_SM, true, nullptr)) == 0;
		set_cur_and_def_value<bool>(strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_BJTCFS_TDBX, true, nullptr)) == 0, strcmp(init, local_trans::lang_trans_between_hz936(OPTION_VALUE_BJTCFS_TDBX, true, nullptr)) == 0, setv, data);
		local_utility::free_memory(init);
	}
	else
	{
		strcpy(buf, val ? local_trans::lang_trans_between_hz936(OPTION_VALUE_BJTCFS_TDBX, true, nullptr) : local_trans::lang_trans_between_hz936(OPTION_VALUE_BJTCFS_ADBX, true, nullptr));
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)base_id);
		bool def = strcmp(init, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_TGKBYTY, true, nullptr)) == 0;

		local_utility::free_memory(init);
		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
		val = strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_TGKBYTY, true, nullptr)) == 0;
		set_cur_and_def_value<bool>(val, def, setv, data);
	}
	else
	{
		if (val)
			strcpy(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_TGKBYTY, true, nullptr));
		else
		{
			char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
			strcpy(buf, init);
			local_utility::free_memory(init);
		}
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)base_id);
		bool def = strcmp(init, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_TGKBYFPZ, true, nullptr)) == 0;

		local_utility::free_memory(init);
		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
		val = strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_TGKBYFPZ, true, nullptr)) == 0;
		set_cur_and_def_value<bool>(val, def, setv, data);
	}
	else
	{
		if (val)
			strcpy(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_TGKBYFPZ, true, nullptr));
		else
		{
			char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
			strcpy(buf, init);
			local_utility::free_memory(init);
		}
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)base_id);
		bool def = strcmp(init, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_DZ, true, nullptr)) == 0;

		local_utility::free_memory(init);
		hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id, buf);
		val = strcmp(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_DZ, true, nullptr)) == 0;
		set_cur_and_def_value<bool>(val, def, setv, data);
	}
	else
	{
		if (val)
			strcpy(buf, local_trans::lang_trans_between_hz936(OPTION_VALUE_SMYM_DZ, true, nullptr));
		else
		{
			char* init = (char*)hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id);
			strcpy(buf, init);
			local_utility::free_memory(init);
		}
		SANE_Int after = 0;
		ret = hg_sane_middleware::instance()->set_option(handle_, (void*)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_, (void*)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_, (void*)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, VAL_LIMIT_ENUM, 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_, (void*)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_, (void*)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_, (void*)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, VAL_LIMIT_ENUM, 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_, (void*)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, VAL_LIMIT_ENUM, 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, VAL_LIMIT_ENUM, 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, VAL_LIMIT_NONE, 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;

			set_cur_and_def_value<bool>(val, false, setv, 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;
			
			set_cur_and_def_value<bool>(val, false, setv, 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, VAL_LIMIT_NONE, 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, VAL_LIMIT_ENUM, 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, VAL_LIMIT_NONE, 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, VAL_LIMIT_NONE, 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, def = SANE_FALSE;
		SANE_Int	after = 0;
		if (setv)
		{
			if (is_erase_hole_l_id_ != -1)
			{
				hg_sane_middleware::instance()->get_cur_value(handle_, (void*)is_erase_hole_l_id_, &yes);
				hg_sane_middleware::instance()->get_def_value(handle_, (void*)is_erase_hole_l_id_, &def);
			}
			if (!yes && is_erase_hole_r_id_ != -1)
			{
				hg_sane_middleware::instance()->get_cur_value(handle_, (void*)is_erase_hole_r_id_, &yes);
				hg_sane_middleware::instance()->get_def_value(handle_, (void*)is_erase_hole_r_id_, &def);
			}

			set_cur_and_def_value<bool>(yes == SANE_TRUE, def == SANE_TRUE, setv, 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_, (void*)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_, (void*)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, def = .0f;
		if (setv)
		{
			const SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, (void*)base_id);
			void* init = hg_sane_middleware::instance()->get_def_value(handle_, (void*)base_id),
				* cur = hg_sane_middleware::instance()->get_cur_value(handle_, (void*)base_id);
			float	n = SANE_UNFIX(*(SANE_Fixed*)cur),
					d = SANE_UNFIX(*(SANE_Fixed*)init);

			if (desc->constraint_type == SANE_CONSTRAINT_RANGE)
			{
				float	l = SANE_UNFIX(desc->constraint.range->min),
						u = SANE_UNFIX(desc->constraint.range->max),
						s = SANE_UNFIX(desc->constraint.range->quant);
				set_value_range<SANE_Fixed, float>(*(SANE_Fixed*)cur, *(SANE_Fixed*)init, desc->constraint.range->min, desc->constraint.range->max, desc->constraint.range->quant, setv, data, &scanner::to_float);
			}
			else
				set_cur_and_def_value<float>(n, d, setv, data);
			local_utility::free_memory(init);
			local_utility::free_memory(cur);

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

	ev_cnt_ = 0;
	events_.clear();
	images_.clear();
	scan_msg_ = "OK";
	scan_err_ = false;
	user_cancel_ = false;
	fetch_imgs_ = 0;
	is_scanning_ = true;
	app_wnd_ = setting_.get() ? setting_->hwnd() : callback::find_main_wnd();

	if (thread_starting_.get() && thread_starting_->joinable())
		thread_starting_->join();
#ifdef START_SCAN_IN_THREAD
	thread_starting_.reset(new std::thread(&scanner::thread_start, this));
#else
	ret = thread_start();
#endif

	return ret;
}
COM_API_IMPLEMENT(scanner, int, stop(void))
{
	user_cancel_ = true;
	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 = 2;

	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);

		count = images_.count();

		//int ev = get_event();
		//
		
		//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, 1);
	}

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

	if (img)
	{
		img->prepare_data_for_transfer(xfer);
		img->add_ref();

		wchar_t	msg[128] = { 0 };
		swprintf_s(msg, _countof(msg) - 1, L"Begin transferring image %d of %p\r\n", fetch_imgs_ + 1, img);
		log_info(msg, 1);
	}

	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, discard_first_image(void))
{
	scanned_img* img = images_.take();
	if (img)
	{
		img->release();
		return true;
	}
	else
	{
		return false;
	}
}
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, int, last_error(void))
{
	return err_;
}
COM_API_IMPLEMENT(scanner, int, image_fetched(IScanImg* tx))
{
	fetch_imgs_++;
	if (ui_notify)
		ui_notify(SANE_EVENT_IMG_UPLOADED, NULL, fetch_imgs_);
	else if (indicator_.get())
		indicator_->notify_data_arrived(false);

	{
		wchar_t	msg[128] = { 0 };
		swprintf_s(msg, _countof(msg) - 1, L"Transferring image %d of %p finished.\r\n", fetch_imgs_, tx);
		log_info(msg, 1);
	}

	return 0;
}

COM_API_IMPLEMENT(scanner, bool, get_option_info(int sn, value_type* type, value_limit* limit, int* bytes))
{
#define SIMPLE_STR_INFO(id, rdo)				\
	if (sn == id)						\
	{									\
		if (type)						\
			*type = VAL_TYPE_STR;		\
		if (limit)						\
			*limit = rdo ? VAL_LIMIT_READONLY : VAL_LIMIT_NONE;	\
		if (bytes)						\
			*bytes = 255;				\
										\
		return true;					\
	}
#define SIMPLE_INT_INFO(id, rdo)				\
	if (sn == id)						\
	{									\
		if (type)						\
			*type = VAL_TYPE_INT;		\
		if (limit)						\
			*limit = rdo ? VAL_LIMIT_READONLY : VAL_LIMIT_NONE;	\
		if (bytes)						\
			*bytes = sizeof(int);		\
										\
		return true;					\
	}

		
	SIMPLE_STR_INFO(SANE_OPT_ID_DRIVER_VERSION, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_MANUFACTURER, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_COPYRIGHT, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_CO_URL, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_CO_TEL, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_CO_ADDR, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_CO_GPS, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_DEV_NAME, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_DEV_FAMILY, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_LOGIN, false);
	SIMPLE_STR_INFO(SANE_OPT_ID_LOGOUT, false);
	SIMPLE_STR_INFO(SANE_OPT_ID_DRIVER_LOG, false);
	SIMPLE_STR_INFO(SANE_OPT_ID_DEVICE_LOG, false);
	SIMPLE_STR_INFO(SANE_OPT_ID_DEVICE_MAC_ADDR, true);
	SIMPLE_STR_INFO(SANE_OPT_ID_MOTOR_VER, true);

	SIMPLE_INT_INFO(SANE_OPT_ID_HELP, false);
	SIMPLE_INT_INFO(SANE_OPT_ID_HISTORY_COUNT, true);
	SIMPLE_INT_INFO(SANE_OPT_ID_ROLLER_COUNT, false);
	SIMPLE_INT_INFO(SANE_OPT_ID_VID, true);
	SIMPLE_INT_INFO(SANE_OPT_ID_PID, true);
	SIMPLE_INT_INFO(SANE_OPT_ID_ROLLER_LIFE, true);

	sn = transfer_id(sn);
	if (sn == -1)
		return false;

	EXAPIPOS	ex = find_ex_api(sn);
	SANE_Option_Descriptor* desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, ex == ex_opts_.end() ? (void*)sn : (void*)ex->base_ind);
	bool ret = false;

	if (desc)
	{
		if (type)
			*type = scanner::from_sane_type(desc->type);
		if (limit)
		{
			int lmt = scanner::from_sane_constraint(desc->constraint_type);
			if (IS_CAP_READONLY(desc->cap))
				lmt |= VAL_LIMIT_READONLY;
			*limit = (value_limit)lmt;
		}
		if (bytes)
			*bytes = desc->size;

		ret = true;
	}

	return ret;
}
COM_API_IMPLEMENT(scanner, bool, get_value(int sn, set_opt_value setval, void* param))
{
	if (sane_ids_.count((sane_option_id)sn) &&
		sane_ids_[(sane_option_id)sn] == sn)
	{
		char	buf[256] = { 0 };
		value_type	type = VAL_TYPE_NONE;
		int ret = hg_sane_middleware::instance()->set_option(handle_, (void*)sn, SANE_ACTION_GET_VALUE, buf, NULL);

		if (ret == SANE_STATUS_GOOD)
		{
			get_option_info(sn, &type, NULL, NULL);
			if (type == VAL_TYPE_STR)
			{
				std::string	str(buf);
				setval(&str, VAL_ROLE_CURRENT, VAL_LIMIT_NONE, param);
			}
			else
				setval(buf, VAL_ROLE_CURRENT, VAL_LIMIT_NONE, param);

			return true;
		}

		return false;
	}

	int org_id = sn;
	if(sn == 0x102c)	// CapType::Language
		sn = transfer_id(SANE_OPT_ID_LANGUAGE);
	else
		sn = transfer_id(sn);
	if (sn == -1)
		return false;

	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_, (void*)sn);
		void* init = hg_sane_middleware::instance()->get_def_value(handle_, (void*)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_, (void*)sn, &v);
			val = v == SANE_TRUE;
			//set_cur_and_def_value<bool>(val, *(SANE_Bool*)init == SANE_TRUE, setval, param);
			{
				int role = VAL_ROLE_NONE;
				val = false;
				if (*(SANE_Bool*)init == SANE_FALSE)
					role |= VAL_ROLE_DEFAULT;
				if (v == SANE_FALSE)
					role |= VAL_ROLE_CURRENT;
				setval(&val, (value_role)role, VAL_LIMIT_ENUM, param);
				val = true;
				role = VAL_ROLE_NONE;
				if (*(SANE_Bool*)init == SANE_TRUE)
					role |= VAL_ROLE_DEFAULT;
				if (v == SANE_TRUE)
					role |= VAL_ROLE_CURRENT;
				setval(&val, (value_role)role, VAL_LIMIT_ENUM, 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_, (void*)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, VAL_LIMIT_ENUM, 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_, (void*)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, VAL_LIMIT_ENUM, 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_, (void*)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 (org_id == 0x102c)
						{
							// const char* hz = local_trans::lang_trans_between_hz936(val.c_str(), false, NULL);
							int lid = sane_opt_trans::language_to_twain(val.c_str());
							if (!setval(&lid, role, VAL_LIMIT_ENUM, param))
								break;
						}
						else if (!setval(&val, role, VAL_LIMIT_ENUM, 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, bool, get_value(int sn, void* data, int* len))
{
	if (sn != SANE_OPT_ID_DRIVER_LOG && sn != SANE_OPT_ID_DEVICE_LOG)
		return false;

	SANE_Status ret = hg_sane_middleware::instance()->set_option(handle_, (const void*)sn, SANE_ACTION_GET_VALUE, data, NULL);
	wchar_t		msg[128] = { 0 };

	swprintf_s(msg, _countof(msg) - 1, L"get log of(%x) = 0x%x\r\n", sn, ret);
	log_info(msg, 1);

	return ret == SANE_STATUS_GOOD;
}
COM_API_IMPLEMENT(scanner, int, set_value(int sn, void* val))
{
	if (sane_ids_.count((sane_option_id)sn) &&
		sane_ids_[(sane_option_id)sn] == sn)
	{
		int ret = hg_sane_middleware::instance()->set_option(handle_, (void*)sn, SANE_ACTION_SET_VALUE, val, NULL);

		return ret;
	}

	int org_id = sn;
	if (sn == 0x102c)	// CapType::Language
		sn = transfer_id(SANE_OPT_ID_LANGUAGE);
	else
		sn = transfer_id(sn);
	if (sn == -1)
		return SANE_STATUS_UNSUPPORTED;

	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_, (void*)sn);

	{
		wchar_t	msg[256] = { 0 };
		if (ex == ex_opts_.end())
			swprintf_s(msg, _countof(msg) - 1, L"set_value of %s(%s) of ID %d\r\n", local_trans::a2u(desc->name, CP_UTF8).c_str(), local_trans::a2u(hg_sane_middleware::option_value_2_string(desc->type, val).c_str(), CP_UTF8).c_str(), sn);
		else if(ex->base_ind != -1)
		{
			desc = hg_sane_middleware::instance()->get_option_descriptor(handle_, (void*)ex->base_ind);
			swprintf_s(msg, _countof(msg) - 1, L"set_value of %s(0x%x) of ID %d, base id = %d)\r\n", local_trans::a2u(desc->name, CP_UTF8).c_str(), *(unsigned*)val, sn, ex->base_ind);
		}
		log_info(msg, 0);
	}

	twain_set_ = true;
	if (ex == ex_opts_.end())
	{
		std::string	strv("");
		void* w = val;
		if (org_id == 0x102c)
		{
			// const char* str = sane_opt_trans::language_from_twain(*(int*)val);
			strv = sane_opt_trans::language_from_twain(*(int*)val);
			w = &strv;
		}

		if (!set_option_value_with_parent(sn, w, &ret))
			ret = set_option_value(sn, desc->type, desc->size, w);
		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);
}
COM_API_IMPLEMENT(scanner, int, get_fixed_ids(bool(__stdcall* cb)(uint32_t id, void* param), void* param))
{
	for (auto& v : sane_ids_)
	{
		if (!cb(v.first, param))
			break;
	}

	return 0;
}

// SANE options ID ...
SANE_OPTION_ID_IMPLEMENT(color_correction)
SANE_OPTION_ID_IMPLEMENT(fold_type)
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))
{
	int	ret = SCANNER_ERR_NO_DATA;
	if (callback::get_config_content)
	{
		char* cont = callback::get_config_content(local_trans::u2a(scanner_name_.c_str(), CP_UTF8).c_str(), NULL);
		if (cont)
		{
			if (*len <= strlen(cont))
			{
				*len = strlen(cont) + 4;

				ret = SCANNER_ERR_INSUFFICIENT_MEMORY;
			}
			else
			{
				strcpy(buf, cont);
				ret = SCANNER_ERR_OK;
				*len = strlen(cont);
			}
			if (callback::twain_ui_free)
				callback::twain_ui_free(cont);
		}
	}

	return ret;
}
COM_API_IMPLEMENT(scanner, int, twain_set_config(char* buf, size_t len))
{
	if(callback::apply_given_config)
	{
		if(callback::apply_given_config(buf, handle_, &sane_api_) == 0)
			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))
{
	is_show_ui_ = with_scan;
	is_show_setting_ = true;
	events_.clear();
	if (callback::show_setting_ui)
	{
		if (with_scan)
		{
			images_.clear();
			scan_msg_ = "OK";
			scan_err_ = false;
		}
		auto ui = [this](ui_result res)
		{
			int uev = SANE_EVENT_SCAN_FINISHED;
			switch (res)
			{
			case UI_RESULT_FAILED:

				break;
			case UI_RESULT_OK:

				break;
			case UI_RESULT_CLOSE_NORMAL:
				is_show_ui_ = false;
				uev = SANE_EVENT_UI_CLOSE_NORMAL;
				on_ui_event(uev, (void*)uev);
				break;
			case UI_RESULT_CLOSE_CANCEL:
				is_show_ui_ = false;
				uev = SANE_EVENT_UI_CLOSE_CANCEL;
				on_ui_event(uev, (void*)uev);
				break;
			case UI_RESULT_CLOSE_SETTING:
				is_show_setting_ = false;
				uev = SANE_EVENT_UI_CLOSE_SETTING;
				on_ui_event(uev, (void*)uev);
				break;
			case UI_RESULT_START_SCAN:
				on_ui_event(SANE_EVENT_UI_SCAN_COMMAND, NULL);
				break;
			default:
				break;
			}
		};
		int res = callback::show_setting_ui(handle_, parent, &sane_api_, local_trans::u2a(scanner_name_.c_str(), CP_UTF8).c_str(),with_scan, ui);
		//if (res == ui_result::UI_RESULT_CLOSE_NORMAL)
		//{
		//	int ev = SANE_EVENT_UI_CLOSE_NORMAL;
		//	on_ui_event(ev, (void*)ev);
		//}
		//else if (res == ui_result::UI_RESULT_START_SCAN)
		//{
		//	//callback::show_progress_ui(parent, ui_process, &ui_notify);
		//	//start();
		//	on_ui_event(SANE_EVENT_UI_SCAN_COMMAND, NULL);
		//}
		//else if (res == UI_RESULT_CLOSE_CANCEL)
		//{
		//	int ev = SANE_EVENT_UI_CLOSE_CANCEL;
		//	on_ui_event(ev, (void*)ev);
		//}
		//on_ui_event(ev, NULL);
	}
	else if (cfg_)
	{
		if (with_scan)
		{
			events_.clear();
			images_.clear();
			scan_msg_ = "OK";
			scan_err_ = false;
		}

		size_t	pid = scanner_name_.find(L" - ");
		if (pid == -1)
			pid = scanner_name_.length();
		setting_.reset(new dlg_setting(parent, &sane_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) + L".cfg").c_str(), &scanner::apply_scheme, this, &twain_set_);
		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, bool bIndicator))
{
	is_bIndicator = bIndicator;
	ui_notify = std::function<void(int, void*, int)>();
	auto ui_process = [this](ui_result res)
	{
		int uev = SANE_EVENT_SCAN_FINISHED;
		switch (res)
		{
		case UI_RESULT_CLOSE_NORMAL:
			uev = SANE_EVENT_UI_CLOSE_NORMAL;
			//if (!is_show_ui_)
			{
				on_ui_event(uev, (void*)uev);
			}
			break;
		case UI_RESULT_CLOSE_CANCEL:
			uev = SANE_EVENT_UI_CLOSE_CANCEL;
			//if (!is_show_ui_)
			{
				on_ui_event(uev, (void*)uev);
			}
			//else
			//	stop();
			break;
		default:
			break;
		}
	};
	if (callback::show_progress_ui && bIndicator)
	{
		callback::show_progress_ui(parent, ui_process,&ui_notify);
	}
	else if(bIndicator)
	{
		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();

	if (callback::close_ui)
		callback::close_ui(UI_INDICATOR | UI_SETTING | UI_MSG_BOX);
	is_show_setting_ = false;
	ui_notify = std::function<void(int, void*, int)>();
}
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)
	{
		img_ind_ = 0;
		if (indicator_.get())
			indicator_->notify_working();
		else if (callback::show_progress_ui && is_bIndicator)
			ui_notify(ev_code, data, *len);
		on_ui_event(ev_code, (void*)ev_code);
		log_info(L"Scanning ...\r\n", 1);
	}
	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*/)
		{
			size_t	bytes = 0;
			int		times = 0;

			images_.count(&bytes);
			img->set_image_status((SANE_Image_Statu)simg->flag.statu);
			bytes /= 1024 * 1024;
			while (bytes > max_img_mem_ && !user_cancel_ && times++ < 20)	// memory control
			{
				std::this_thread::sleep_for(std::chrono::milliseconds(5));
				images_.count(&bytes);
				bytes /= 1024 * 1024;
				if (times == 1)
					log_info(L"Memory usage upto limit! wait up to 100 ms ...\r\n", 1);
			}
			images_.save(img, img->bytes());
		}
		else
		{
			img->release();
		}
		if (indicator_.get())
			indicator_->notify_data_arrived(true);
		else if (ui_notify)
			ui_notify(ev_code, data, img_ind_);

		{
			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, 1);
		}
	}
	else if (ev_code == SANE_EVENT_USB_DATA_RECEIVED)
	{
		//if (indicator_.get())
		//	indicator_->notify_data_arrived(false);
		//else if (ui_notify)
		//	ui_notify(ev_code, data, 0);
	}
	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 (ui_notify)
			ui_notify(ev_code, data, *len);
		else
		{
			if (*len)
			{
				if (callback::show_messagebox_ui)
				{
					callback::show_messagebox_ui(app_wnd_, ev_code, (void*)data, 0);
				}
				else  // windows message box ...
				{
					std::wstring msg(local_trans::a2u((char*)data, CP_UTF8));
					if (!IsWindow(app_wnd_))
						callback::bring_message_box_topmost(local_trans::lang_trans_between_hz936(CONST_STRING_ERROR).c_str());
					MessageBoxW(app_wnd_, msg.c_str(), local_trans::lang_trans_between_hz936(CONST_STRING_ERROR).c_str(), 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, 1);
		}
	}
	//else if (ev_code == SANE_EVENT_ERROR)			// 灞忚斀锛屽湪鍋滄鎵弿鏃跺睍绀轰俊鎭?- 2023-05-30
	//{
	//	if (callback::show_messagebox_ui && *len)
	//	{
	//		callback::show_messagebox_ui(app_wnd_, ev_code, (void*)data, 0);
	//	}
	//	else if (*len)  //閿欒寮瑰嚭
	//	{
	//		std::wstring msg(local_trans::a2u((char*)data, CP_UTF8));
	//		if (!IsWindow(app_wnd_))
	//			callback::bring_message_box_topmost(local_trans::lang_trans_between_hz936(CONST_STRING_ERROR).c_str());
	//		MessageBoxW(app_wnd_, msg.c_str(), local_trans::lang_trans_between_hz936(CONST_STRING_ERROR).c_str(), MB_OK);
	//	}
	////	on_ui_event(ev_code, (void*)ev_code);
	//}

	return 0;
}















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

std::mutex	g_lock_;
std::string	g_path_file_("");
FILE* g_file_ = NULL;
static int g_log_level = 1;

static int get_log_level(const char* log_file)
{
	std::string	cfg(log_file);
	size_t		pos = cfg.rfind('\\');

	cfg.erase(pos);
	pos = cfg.rfind('\\');
	if (pos != std::string::npos)
	{
		if (stricmp(cfg.substr(pos).c_str(), "\\log") == 0)
		{
			cfg.erase(pos);
			cfg += "\\config";
		}
	}
	cfg += "\\debug.cfg";
	
	return GetPrivateProfileIntA("log", "twain-level", 1, cfg.c_str());
}
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 };

		hg_get_current_time_w(now);
		g_log_level = get_log_level(g_path_file_.c_str());
		swprintf_s(ts, _countof(ts) - 1, L"==================%s - %d, Proc %d==================\r\n", now, g_log_level, GetCurrentProcessId());
		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(), "wb");
			if (g_file_)
			{
				unsigned short bom = 0x0feff;
				wchar_t	ts[128] = { 0 }, now[40] = { 0 };

				hg_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();
		callback::init_ui();

		hg_sane_middleware::set_callback(callback::sane_event_callback, NULL);
		if (hg_sane_middleware::instance()->is_ready())
			return SANE_STATUS_GOOD;
		else
			return SCANNER_ERR_LANG_PAK_LOST;
	}
#ifdef EXPORT_SANE_API
	__declspec(dllexport)
#else
	__declspec(dllimport)
#endif
		int __stdcall open_scanner(SCANNERID scanner_id, ISaneInvoker** invoker, bool last_try)
	{
		if (!invoker)
			return SCANNER_ERR_INVALID_PARAMETER;

		if (!is_scanner_online(scanner_id))
		{
			if (last_try)
			{
				HWND parent = callback::find_main_wnd();
				std::string msg(callback::language_trans("\xE6\xB2\xA1\xE6\x9C\x89\xE6\x89\xBE\xE5\x88\xB0\xE6\x89\xAB\xE6\x8F\x8F\xE4\xBB\xAA\xEF\xBC\x81", true, NULL)),
					title(callback::language_trans("\xE9\x94\x99\xE8\xAF\xAF", true, NULL));

				if (callback::show_messagebox_ui)
					callback::show_messagebox_ui(parent, 0, &msg[0], SCANNER_ERR_DEVICE_NOT_FOUND);
				else
					MessageBoxW(parent, local_trans::a2u(msg.c_str(), CP_UTF8).c_str(), local_trans::a2u(title.c_str(), CP_UTF8).c_str(), MB_OK);
			}

			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;
			if (last_try)
			{
				HWND parent = callback::find_main_wnd();
				std::string msg(callback::language_trans("\xE6\x89\x93\xE5\xBC\x80\xE6\x89\xAB\xE6\x8F\x8F\xE4\xBB\xAA\xE5\xA4\xB1\xE8\xB4\xA5\xE3\x80\x82", true, NULL)),
					title(callback::language_trans("\xE9\x94\x99\xE8\xAF\xAF", true, NULL));
				if (callback::show_messagebox_ui)
					callback::show_messagebox_ui(parent, 0, &msg[0], ret);
				else
					MessageBoxW(parent, local_trans::a2u(msg.c_str(), CP_UTF8).c_str(), local_trans::a2u(title.c_str(), CP_UTF8).c_str(), MB_OK);
			}

			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();
		callback::unint_ui();

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

}