图片翻转（Raw Image）

int TransformImageBuffer(unsigned char* pImageBuffer, int width, int height,unsigned char* targetImageBuffer)
{
        //center flip
    int nRet = ;
    int length = width * height;
    for(int i = ; i < length / ; i++)
    {
        targetImageBuffer[i] = pImageBuffer[length -i -];
        targetImageBuffer[length -i -] = pImageBuffer[i];
    }
    //vertical flip
    for(int h = ; h < height; h++)
    {
        int firstLine = h * width;
        for(int w = ; w < width /; w++)
        {
            int temp = targetImageBuffer[firstLine + w];
            targetImageBuffer[firstLine + w] = targetImageBuffer[firstLine + width - w - ];
            targetImageBuffer[firstLine + width - w - ] = temp;
        }
    }

    //horizon flip
    for(int i = ; i < length /; i++)
    {
        int line = i / width;
        int seq = i % width;
        int mirrorPoint = (height - line - ) * width -  + seq;
        targetImageBuffer[i] = pImageBuffer[mirrorPoint];
        targetImageBuffer[mirrorPoint] = pImageBuffer[i];
    }
    return nRet;
}