BMP read

//считывание в main
    FILE * source = fopen(sourcefn, "rb");
    BMP ImageIn;
    ImageIn.ReadFromFile( sourcefn );


    int width = ImageIn.TellWidth();
    int height =  ImageIn.TellHeight();
    cout<<"readRGBA"<<endl;
    char * buffer = new char[width*height*BYTES];

    for(int j = 0; j<height; j++)
    {
        for(int i = 0; i<width; i++)
        {
            RGBApixel pix =  ImageIn.GetPixel(i,j);
            buffer[BYTES*(j*width+i) + 0] = pix.Blue;
            buffer[BYTES*(j*width+i) + 1] = pix.Green;
            buffer[BYTES*(j*width+i) + 2] = pix.Red;
            buffer[BYTES*(j*width+i) + 3] = 127;
        }
    }

//запись в rekurswrite

        BMP ImageOut;
        ImageOut.SetSize( 1024, 1024 );
        ImageOut.SetBitDepth( 32 );
        for(int j = 0; j<SCBLOCK_H; j++)
            for(int i = 0; i< SCBLOCK_W; i++)
            {
                RGBApixel pix;
                pix.Red = subimage[BYTES*j*SCBLOCK_W+i + 0];
                pix.Green = subimage[BYTES*j*SCBLOCK_W+i + 1];
                pix.Blue = subimage[BYTES*j*SCBLOCK_W+i + 2];
                pix.Alpha = 0;
                ImageOut.SetPixel( i, j, pix);
            }
        string title = source+string(".bmp");
        const char * name =   title.c_str();
        ImageOut.WriteToFile(name);