Feature Request: add adaptive grain filter

[Selur]

Okay, since I don't know how to get kagefunc working in a portable Vapoursynth, I tried to guess how this is might work:

I tried:

# Imports
import os
import sys
import vapoursynth as vs
core = vs.get_core()
# Loading Plugins
core.std.LoadPlugin(path="I:/Hybrid/64bit/vsfilters/GrainFilter/AdaptiveGrain/adaptivegrain_rs.dll")
core.std.LoadPlugin(path="I:/Hybrid/64bit/vsfilters/GrainFilter/AddGrain/AddGrain.dll")
core.std.LoadPlugin(path="I:/Hybrid/64bit/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# source: 'F:\TestClips&Co\files\10bit Test.mkv'
# current color space: YUV420P10, bit depth: 10, resolution: 640x352, fps: 25, color matrix: 470bg, yuv luminance scale: limited, scanorder: progressive
# Loading F:\TestClips&Co\files\10bit Test.mkv using LWLibavSource
clip = core.lsmas.LWLibavSource(source="F:/TestClips&Co/files/10bit Test.mkv", format="YUV420P10", cache=0)
# making sure input color matrix is set as 470bg
clip = core.resize.Point(clip, matrix_in_s="470bg",range_s="limited")
# making sure frame rate is set to 25
clip = core.std.AssumeFPS(clip=clip, fpsnum=25, fpsden=1)
# Setting color range to TV (limited) range.
clip = core.std.SetFrameProp(clip=clip, prop="_ColorRange", intval=1)

# adding Grain using AdaptiveGrain
clip = core.std.PlaneStats(clipa=clip) # calculate stats
mask = core.adg.Mask(clip=clip, luma_scaling=12) # calculate mask
grained = core.grain.Add(clip, var=0.25, constant=True) # create grained version
clip = core.std.MaskedMerge(clip, grained, mask) # only use grained version according to mask

# adjusting output color from: YUV420P10 to YUV420P8 for x264Model (i420@10)
clip = core.resize.Bicubic(clip=clip, format=vs.YUV420P8, range_s="limited")
# set output frame rate to 25.000fps
clip = core.std.AssumeFPS(clip=clip, fpsnum=25, fpsden=1)
# Output
clip.set_output()

is the way it should be used.

-> do you know whether this is correct?

Cu Selur