如何更改数据结构?

struct _IMGPARA
{
    char sSensorRes[16];        //like "640x480"or"1280x720", use to decide sensor mode
    unsigned char ucMode;        //set sensor mode,[0,n], old interface
   
    unsigned char ucFlipmirror;    //[0,3], 0:flip&mirror,1:mirror,2:flip,3:normal
   
    unsigned char ucBrightness;    //[0,100]
   
    unsigned char ucSaturation;    //[0,100]
   
    unsigned char ucContrast;        //[0,100]
   
    unsigned char ucSharpness;    //[0,100]
   
    unsigned char ucHue;            //[0,100]
   
    unsigned char ucAWB;            //[0,1], 0:manual or OFF, 1:auto or ON
   
    unsigned char ucBLC;            //[0,1], 0:OFF, 1:ON
    unsigned char ucBLCLevel;        //[0,100]
   
    unsigned char ucAGC;            //[0,1], 0:OFF, 1:ON
    unsigned char ucGainLevel;    //[0,100]
   
    unsigned char ucAES;            //Exposure mode,[0,1],0:manual, 1:auto, 2:fixed.
   
    unsigned char ucWhiteBalance;        //[0,5],AWB/MWB/Indoor(3200K)/Indoor(4200K)/Outdoor(4800K)/Outdoor(6700K)
    unsigned char ucRGain;        //[0,255]
    unsigned char ucBGain;        //[0,255]
   
    unsigned char ucIris;            //[0,2], 0:manual, 1:auto, 2:fixed
    unsigned char ucIrisLevel;        //[0,100]
   
    unsigned char ucFlickerless;    //[0,1], 0:OFF, 1:ON
    unsigned char ucPowerFrequency;    //[0,1],0:50hzPAL,1:60hzNTSC
    unsigned char ucMaxExposureTime;        //[0,n]
    unsigned char ucMinExposureTime;        //[0,n]
   
    unsigned char ucShutterMode;     //[0,1], 0:manual, 1:auto   
    unsigned char ucExpPrio;            //exposure priority,[0,1]
    unsigned char ucShutterSpeed;        //speed level,[0,n]
    unsigned char ucSlowShutterMode;    //[0,1], 0:manual or OFF, 1:auto or ON
    unsigned char ucSlowShutterSpeed;    //speed level,[0,n]

    unsigned char ucFocusMode;    //[0,1], 0:manual or OFF, 1:auto or ON
    unsigned char ucFocusSpeed;    //[0,n]
    unsigned short usNearLimit;    //[0,n]
    unsigned short usFarLimit;        //[0,n]

    unsigned char ucIrCutFilter;    //[0,2],0:off, 1:on, 2:auto

    unsigned char ucWDRMode;        //[0,1], 0:OFF, 1:ON
    unsigned long ulWDRLevel;        //

    unsigned char ucNoiseFilter;        //[0,100]
    unsigned char ucAESLevel;        //[0,n] add on 2010-1216   
}__attribute__((packed,aligned(1)));

typedef struct _IMGPARA IMGSENSOR_PARA;

 

两个AP都用这了个数据结构，结果按不同的结果进行解析，于是会出现错误。为了解决这个问题，新增的item放在数据结构的末尾，这样就可以做到兼容。只是要用到新的item，就必须要两个AP同时更新数据结构并编译生成。