Allow to manually set the seed for the SD pipeline

[maxjcohen]

Description

Enable setting the seed for the stable diffusion pipeline. This is done through an additional seed parameter in the request, such as:

curl http://localhost:8080/v1/images/generations \
    -H "Content-Type: application/json" \
    -d '{"model": "stablediffusion", "prompt": "prompt", "n": 1, "step": 51, "size": "512x512", "seed": 3}'

Notes for Reviewers
When the seed parameter is not sent, request.seed defaults to 0, making it difficult to detect an actual seed of 0. Is there a way to change the default to -1 for instance ?

Signed commits

• Yes, I signed my commits.

[mudler]

to allow a seed of '0' we should change the request parameters to be a pointer of an int - do you want to take a stab at it? For me we can merge this one and iterate on another PR

[mudler]

Looking good

[maxjcohen]

to allow a seed of '0' we should change the request parameters to be a pointer of an int - do you want to take a stab at it? For me we can merge this one and iterate on another PR

Sure, I'll open a new PR for this one. I don't have much experience in Go, but I'm guessing I have to mess with this part of the code:
https://github.com/go-skynet/LocalAI/blob/0e7e8eec5305607bbc63306f97b418e91fdd9875/pkg/grpc/proto/backend.pb.go#L1151-L1168

[mudler]

to allow a seed of '0' we should change the request parameters to be a pointer of an int - do you want to take a stab at it? For me we can merge this one and iterate on another PR

Sure, I'll open a new PR for this one. I don't have much experience in Go, but I'm guessing I have to mess with this part of the code:

https://github.com/go-skynet/LocalAI/blob/0e7e8eec5305607bbc63306f97b418e91fdd9875/pkg/grpc/proto/backend.pb.go#L1151-L1168

here: https://github.com/go-skynet/LocalAI/blob/0e7e8eec5305607bbc63306f97b418e91fdd9875/api/config/prediction.go#L36