Deoldify Vapoursynth filter

[Dan64]

Ok, I will also release the new version tomorrow.

Thanks,
Dan

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Ps.: uploaded a test version which does include KNLMeans, but not havsfunc.

I rewrote the "degrain" function as following

def vs_degrain(clip: vs.VideoNode = None, strength: int = 0, device_id: int = 0) -> vs.VideoNode:
   
    if strength == 0:
        return clip
   
    match strength:
        case 1:       
          dstr = 1.5
          dtmp = 1
        case 2:
          dstr = 2.5
          dtmp = 1
        case 3:
          dstr = 3.5
          dtmp = 1
        case 4:
          dstr = 5.5
          dtmp = 2
        case 5:
          dstr = 8.5
          dtemp = 2
        case _:
            raise vs.Error("ddeoldify: not supported strength value: " + strength)     
   
    clip = clip.resize.Bicubic(format=vs.YUV444PS, matrix_s="709", range_s="full")   
    clip = vs.core.knlm.KNLMeansCL(clip=clip, d=dtemp, a=2, s=4, h=dstr, channels='Y', device_type="gpu", device_id=device_id)
    clip = clip.resize.Bicubic(format=vs.RGB24, matrix_in_s="709", range_s="full", dither_type="error_diffusion")
   
    return clip

I prefer that in Hybrid the Degrain will display only integer values from 1 to 5. 
So that in the future I can decide to implement a different mapping and/or denoise/degrain function, without the need to change the input.

If you prefer you can call this parameter also "DegrainFactor".

Thanks