IJG Jpeg Compression input

Hi,

For the jpeg library, I am using a windows bitmap, which takes a
considerable amount of space. Since I am only using 4 colors, RGB and
black, I am looking at reducing the size of the bitmap input file.
Where and how can I configure the library so it can effectively use a
smaller input file for jpeg encoding?

"prune" <sophyan@gmail.com> wrote in message 
news:1178823401.450289.9800@w5g2000hsg.googlegroups.com...
> Hi,
>
> For the jpeg library, I am using a windows bitmap, which takes a
> considerable amount of space. Since I am only using 4 colors, RGB and
> black, I am looking at reducing the size of the bitmap input file.
> Where and how can I configure the library so it can effectively use a
> smaller input file for jpeg encoding?

Look into run length encoding - much simpler than jpeg and the 
information is widely available. With only 4 colours you can use RLE4 
which saves even more space.