myvtm/DevAdapter/cw/hspscanner.1.1/hspscannerimpl.h

#ifndef LIBFRAMEWORK_HSPS_IMPL_H
#define LIBFRAMEWORK_HSPS_IMPL_H

#include "HSPScannerClass.h"
#include "cmb.h"

#define FILE_VERSION    1

typedef int  (*pHSPSCall)(const char *data, size_t len, int& iRet);

class HSPSClassImpl : public CHSPSClass
{
public:
    HSPSClassImpl();
    ~HSPSClassImpl();


    //DeviceBaseClass
    ErrorCodeEnum GetDevCategory(DevCategoryInfo &devCategory);
    ErrorCodeEnum Reset();
    ErrorCodeEnum DevClose();
    ErrorCodeEnum GetLastErr(DevErrorInfo &devErrInfo);

    virtual ErrorCodeEnum DevOpen();

    //
    //	Set param, more detail please to see ParamType and its according ParamTypeValue.
    //
    virtual ErrorCodeEnum SetParam(ParamType type, ParamTypeValue value);

    //
    //	Command the device to start to preview or stop previewing.
    //	-nValue[in] set 1 means StartPreview while 0 means StopPreview.
    //	If the device' state had been setted before what the nValue commanded, ignore it and
    //		return Error_Succeed.
    //	The function returns only the specified behavior is done completely, StartPreview in special.
    //  更新20161117： nValue值为 1 时打开预览，确保当前打开预览过程执行结束且窗口处于显示状态才返回Error_Succeed,
    //	nValue值为 0 时关闭预览并隐藏窗口
    virtual ErrorCodeEnum SetPreview(short nValue);

    //	Scan Image from device and store the image.
    //	-pszFileName[in] Store the path and name using suffix ".jpg"
    //		specifies that where the image will be located and what it would be named.
    //	拍摄照片，传入的文件名已带绝对路径，无需再进行拼接处理
    //
    virtual ErrorCodeEnum ScanImage(const char* pszFileName);
    //
    //	Scan Image from device and return the image data in byte format.
    //	-pBtImg[out] The buffer used to store the scanned image data.
    //		存储图片字节流的缓冲区，大小为 nBtLen 字节
    //	-nBtLen[in,out] Indicate the max byte-type size of pBtImg could be stored 
    //		and Store the real byte-type size of pBtImg had used when returned.
    //		when detect value of nBtLen is 0 or smaller that necessary size, please
    //		set nBtlen with real byte-type size and return Error_TooSmallBuffer.
    //		如果nBtLen指定的字节数过小，那么对nBtLen赋值实际所需的大小并返回 Error_TooSmallBuffer，此操作仅允许一次
    //	-pszFileName[in] Store the path and name where the image file should be located
    //		while "" indicates that the image file shouldn't be stored at locate.
    //		文件名长度为零表示不在本地生成图片文件
    virtual ErrorCodeEnum ScanImageEx(BYTE* pBtImg, int& nBtLen, const char* pszFileName = "");

    //
    //	Set position and width of preview dialog with the rate of length to width: 16:9.
    //	-nX[in] The X coordinate of leftTop point.
    //  -nY[in] The Y coordinate of leftTop point.
    //	-nWidth[in] The Width of Preview Dialog .
    //	传入预览窗口显示的坐标，左上角的横坐标nX，左上角的纵坐标nY，以及预览窗口的宽，宽与高的比例为 16:9
    //
    virtual ErrorCodeEnum SetViewPos(int nX, int nY, int nWidth);

    //
    //	Show property dialog of HSPS of LiangTian.
    //	If there is no property dialog function, ignore it and return Error_NotImpl(更新20161117).
    //  更新20161117：用于打开良田高拍仪设备的设置属性页，可能用不到
    //
    virtual ErrorCodeEnum SetProperty()
    {
        return Error_NotImpl;
    }

    //
    //	Get current status of device.
    virtual ErrorCodeEnum GetDevStatus(HspsDevStatus& status);

    ////////////////////////////////////

public:
    int         Run();
    pHSPSCall   HSPSCall;
protected:
    ErrorCodeEnum       GetErrorInfo(int iCode, char* sErr, ...);
    DevErrorInfo        m_DevErrInfo;
    bool                m_bIsOpen;
    char                m_sLibPath[260];
};


#endif //LIBFRAMEWORK_HSPS_IMPL_H