74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
from logging import getLogger
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from typing import Any, Optional
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from PIL import Image
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from ..chain import BlendImg2ImgStage, ChainPipeline
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from ..params import HighresParams, ImageParams, StageParams, UpscaleParams
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from ..server import ServerContext
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from ..worker import WorkerContext
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from ..worker.context import ProgressCallback
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from .upscale import stage_upscale_correction
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logger = getLogger(__name__)
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class UpscaleHighresStage:
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def run(
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self,
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job: WorkerContext,
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server: ServerContext,
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_stage: StageParams,
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params: ImageParams,
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source: Image.Image,
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*,
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highres: HighresParams,
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upscale: UpscaleParams,
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stage_source: Optional[Image.Image] = None,
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pipeline: Optional[Any] = None,
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callback: Optional[ProgressCallback] = None,
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**kwargs,
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) -> Image.Image:
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source = stage_source or source
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if highres.scale <= 1:
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return source
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chain = ChainPipeline()
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scaled_size = (source.width * highres.scale, source.height * highres.scale)
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# TODO: upscaling within the same stage prevents tiling from happening and causes OOM
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if highres.method == "bilinear":
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logger.debug("using bilinear interpolation for highres")
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source = source.resize(scaled_size, resample=Image.Resampling.BILINEAR)
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elif highres.method == "lanczos":
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logger.debug("using Lanczos interpolation for highres")
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source = source.resize(scaled_size, resample=Image.Resampling.LANCZOS)
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else:
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logger.debug("using upscaling pipeline for highres")
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stage_upscale_correction(
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StageParams(),
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params,
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upscale=upscale.with_args(
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faces=False,
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scale=highres.scale,
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outscale=highres.scale,
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),
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chain=chain,
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)
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chain.stage(
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BlendImg2ImgStage(),
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StageParams(),
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overlap=params.overlap,
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strength=highres.strength,
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)
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return chain(
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job,
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server,
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params,
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source,
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callback=callback,
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)
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