184 lines
6.3 KiB
C++
184 lines
6.3 KiB
C++
#pragma once
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#include "scanned_img.h"
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#include <vector>
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#include <algorithm>
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#include <memory>
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#include <functional>
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#include <map>
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#include <thread>
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#define EXTENSION_ID_BASE 0x300
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class scanner : public ISaneInvoker, virtual public refer
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{
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SANE_Handle handle_;
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std::string model_;
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int err_;
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int ex_id_;
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int prev_start_result_;
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int dpi_;
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int fetch_imgs_ = 0; // count for images has fetched by APP
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bool is_bIndicator;
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bool is_show_setting_;
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unsigned int img_ind_;
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std::string scanner_name_;
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std::string tmp_path_;
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std::string cfg_path_;
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std::string scan_msg_;
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bool scan_err_;
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volatile bool is_ui_wait_img_;
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volatile bool is_scanning_;
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volatile bool user_cancel_;
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twain_xfer xfer_;
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safe_img_queue images_;
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size_t max_img_mem_;
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safe_queue<int> events_; //如果有界面，则全部保存从界面传回的消息；否则只保存开始扫描和结束扫描的事件
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int ev_cnt_;
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SANE_FinalImgFormat img_fmt_;
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bool twain_set_;
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SANEAPI sane_api_;
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std::unique_ptr<std::thread> done_;
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std::function<void(int, void*, int)> ui_notify;
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int(* scanner_ev_handler_)(int, void*);
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void* evh_param_;
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HWND app_wnd_; // for MessageBox
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bool is_show_ui_;
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typedef struct _sane_opt
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{
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int opt_sn;
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value_type type;
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value_limit limit;
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int size;
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int cap; // sane capability
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}SANEOPT;
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std::map<int, SANEOPT> sane_opts_; // <fix-id, SANEOPT>
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int transfer_id(int id); // transfer fixed SANE option ID to real id, -1 is none
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void transport_config_file(void);
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void update_config(void);
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void load_config(const wchar_t* file);
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void save_config(const wchar_t* file);
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void apply_config(void);
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void on_ui_event(int uev, void* sender);
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std::string choose_scanner(const std::vector<std::string>& scanners);
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int close(void);
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int init_options_id(void);
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char* get_opt_value(int id, int size, bool def_val/*false - current value*/); // call delete[] to free returned value
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bool get_opt_value(int id, void* buf, bool def_val/*false - current value*/); // call delete[] to free returned value
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int control_read_string(int io_code, std::string& val);
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bool get_option_value_with_parent(int sn, set_opt_value setv, void* param); // return true if handled
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bool set_option_value_with_parent(int sn, void* data, int* err); // return true if handled sn
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int set_option_value(int sn, SANE_Value_Type type, int size, void* data);
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int thread_start(void);
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std::unique_ptr<std::thread> thread_starting_;
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std::unique_ptr<std::thread> thread_stop_; // stop阻塞到工作线程结束，在结束回调后才返回。为不阻塞界面，在线程中停止
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bool scan_working_ = false; // start阻塞到有一张图片才返回，如果第一张出现错误（比如卡纸），则回调先于start返回结束标志。该变量用于协调FINISH事件通知
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template<class T>
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bool set_cur_and_def_value(T cur, T def, set_opt_value setv, void* param)
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{
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if (cur == def)
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return setv(&cur, (value_role)(VAL_ROLE_CURRENT | VAL_ROLE_DEFAULT), VAL_LIMIT_NONE, param);
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else if (setv(&cur, VAL_ROLE_CURRENT, VAL_LIMIT_NONE, param))
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return setv(&def, VAL_ROLE_DEFAULT, VAL_LIMIT_NONE, param);
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return false;
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}
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template<class S, class T>
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void set_value_range(S cur, S def, S l, S u, S s, set_opt_value setv, void* param, T(* to_t)(S))
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{
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T v = to_t(cur);
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while (setv(&v, VAL_ROLE_CURRENT, VAL_LIMIT_RANGE, param))
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{
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v = to_t(def);
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if (!setv(&v, VAL_ROLE_DEFAULT, VAL_LIMIT_RANGE, param))
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break;
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v = to_t(l);
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if (!setv(&v, VAL_ROLE_LOWER, VAL_LIMIT_RANGE, param))
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break;
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v = to_t(u);
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if (!setv(&v, VAL_ROLE_UPPER, VAL_LIMIT_RANGE, param))
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break;
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v = to_t(s);
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setv(&v, VAL_ROLE_STEP, VAL_LIMIT_RANGE, param);
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break;
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}
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}
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static int to_int(SANE_Int v);
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static double to_double(SANE_Fixed v);
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static void ui_callback(int uev, void* sender, void* param);
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static bool is_option_float(int sn, void* param);
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void scan_done(void);
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int language_id_;
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public:
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scanner(const char* model);
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protected:
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~scanner();
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public:
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static void get_scanner_name(const char* model, std::vector<std::string>& names);
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static value_type from_sane_type(SANE_Value_Type type);
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static value_limit from_sane_constraint(SANE_Constraint_Type type);
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// IRef
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public:
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COM_API_OVERRIDE(int32_t, add_ref(void));
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COM_API_OVERRIDE(int32_t, release(void));
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// ISaneInvoker
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public:
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COM_API_OVERRIDE(int, start(void));
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COM_API_OVERRIDE(int, stop(void));
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COM_API_OVERRIDE(int, get_event(void));
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COM_API_OVERRIDE(void, set_event_callback(int(*handle_ev)(int, void*) = nullptr, void* para = nullptr));
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COM_API_OVERRIDE(bool, wait_image(DWORD milliseconds = -1));
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COM_API_OVERRIDE(int, get_scanned_images(DWORD milliseconds = 0));
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COM_API_OVERRIDE(IScanImg*, take_first_image(twain_xfer xfer = TWAIN_XFER_Native)); // call 'release' on returned value, plz
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COM_API_OVERRIDE(bool, get_first_image_header(SANE_Parameters* header, size_t* bytes = nullptr, int* dpi = nullptr));
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COM_API_OVERRIDE(bool, discard_first_image(void));
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COM_API_OVERRIDE(int, convert_image(SANE_ImageFormatConvert* conv));
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COM_API_OVERRIDE(bool, is_online(void));
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COM_API_OVERRIDE(bool, is_paper_on(void));
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COM_API_OVERRIDE(int, last_error(void));
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COM_API_OVERRIDE(int, image_fetched(IScanImg* tx)); // notify the image 'tx' has fetched by APP
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// ui ...
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COM_API_OVERRIDE(bool, ui_is_ok(void));
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COM_API_OVERRIDE(bool, ui_show_setting(HWND parent, bool with_scan, bool indicator = true));
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COM_API_OVERRIDE(bool, ui_show_progress(HWND parent, bool bIndicator));
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COM_API_OVERRIDE(void, ui_hide(void));
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// twain
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COM_API_OVERRIDE(void, twain_set_transfer(twain_xfer xfer));
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COM_API_OVERRIDE(void, twain_set_compression(SANE_CompressionType compression, void* detail = nullptr));
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COM_API_OVERRIDE(int, twain_get_config(char* buf, size_t* len));
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COM_API_OVERRIDE(int, twain_set_config(char* buf, size_t len));
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COM_API_OVERRIDE(bool, get_option_info(int sn, value_type* type, value_limit* limit, int* bytes, bool* readonly));
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COM_API_OVERRIDE(int, get_fixed_ids(SANE_Bool(*cb)(int id, void* param), void* param));
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COM_API_OVERRIDE(bool, get_value(int sn, set_opt_value func, void* param)); // get all values
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COM_API_OVERRIDE(bool, get_value(int sn, void* data, int* len)); // get current value
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COM_API_OVERRIDE(int, set_value(int sn, void* val));
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// methods:
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public:
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int open(void);
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int handle_device_event(int ev_code, void* data, unsigned int* len);
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};
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