I know this has been discussed a lot in the past, and you can probably find more than enough info by searching. But to sum it up, most seeds are washed before they are distributed, leaving little to no alkaloids left on them.
On the other hand, retrieving unwashed seeds directly from a pod, will have SOME alkaloids on the seeds. I've heard of people making tea from these seeds, some having success. As far as a process of extracting raw opium from the seeds, I've never heard of it being done. That doesn't mean it's not possible. But I would imagine the process would be tedious, take lots of know how, tons of seeds etc. That's if it would even be possible.