Lightweight way to create jpeg files?

ruby-talk
1

Is there an easy lightweight way to dynamically create jpeg files? I
think RImageMagick could do this but it seems like it's loaded with
dependences.

Ideally I'd like to send an Array of lines with color values to be
written out to a jpeg. It wouldn't have to support options for encoding.

I'm thinking might go to bmp because I think it may be straightforward
enough to roll my own simple class for this. I'd prefer jpeg and I'm not
sure if I want to spend the time writing something for encoding a jpeg.

Thanks,
Mike

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2

From the sound of what you're doing, it sounds like PNG may be more
suitable than JPEG (but maybe I'm making an invalid assumption here).
Try gem install png. It's a pure-ruby png library from seattle.rb.
Take a look at the rdoc using gem_server and you're good to go. This
definitely handles your dependency worries. If performance should
prove to be a problem then you might try imlib2-ruby.

Alex

···

On 2/24/07, Mike Nelson <miken700@yahoo.com> wrote:

Is there an easy lightweight way to dynamically create jpeg files? I
think RImageMagick could do this but it seems like it's loaded with
dependences.

Ideally I'd like to send an Array of lines with color values to be
written out to a jpeg. It wouldn't have to support options for encoding.

I'm thinking might go to bmp because I think it may be straightforward
enough to roll my own simple class for this. I'd prefer jpeg and I'm not
sure if I want to spend the time writing something for encoding a jpeg.

Thanks,
Mike

3

A.S. Bradbury wrote:

···

On 2/24/07, Mike Nelson <miken700@yahoo.com> wrote:

Thanks,
Mike

From the sound of what you're doing, it sounds like PNG may be more
suitable than JPEG

I gave seattle.rb's png a quick go and it looks perfect for what I need.

Thanks!

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