Gdk Pixbuf and Monochrome images

Hi All,

I am trying to display a monochrome image in a GdkPixbuf. I have the monochrome data in memory and to use it for the call "gdk_pixbuf_new_from_data" i need to convert into RGB Pixels. Hence where ever I find 1 in bit, it is replaced with 3 bytes woth 0xFF and whereever I find a 0 in a bit, it is replaces with 3 bytes of 0x00.

However, I am still unable to get the rendered image correctly. The following is the piece of code:

          for(int i=0;i<count;i++)
                guchar bitShift = 1 << 7;
                for(int shift=0;shift<8;shift++)
                    guchar bit = bitShift >> shift;
                    if(bit & tempBuffer[i])
                        buf[i*24 + shift*3] = buf[i*24 + shift*3 + 1] = buf[i*24 + shift*3 + 2] = 0x00;
                        buf[i*24 + shift*3] = buf[i*24 + shift*3 +1] = buf[i*24 + shift*3 + 2] = 0xFF;

Could anyone help me with where am I going wrong?

Moreover, I find this method very inefficient as there is no use for the user to load a monochrome image, I am using the same amount of memory anyways. Is there a better alternative to this?


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