stable-diffusion-webui/modules/realesrgan_model.py

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import os
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from modules import modelloader, errors
from modules.shared import cmd_opts, opts
from modules.upscaler import Upscaler, UpscalerData
from modules.upscaler_utils import upscale_with_model
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class UpscalerRealESRGAN(Upscaler):
def __init__(self, path):
self.name = "RealESRGAN"
self.user_path = path
super().__init__()
self.enable = True
self.scalers = []
scalers = get_realesrgan_models(self)
local_model_paths = self.find_models(ext_filter=[".pth"])
for scaler in scalers:
if scaler.local_data_path.startswith("http"):
filename = modelloader.friendly_name(scaler.local_data_path)
local_model_candidates = [local_model for local_model in local_model_paths if local_model.endswith(f"{filename}.pth")]
if local_model_candidates:
scaler.local_data_path = local_model_candidates[0]
if scaler.name in opts.realesrgan_enabled_models:
self.scalers.append(scaler)
def do_upscale(self, img, path):
if not self.enable:
return img
try:
info = self.load_model(path)
except Exception:
errors.report(f"Unable to load RealESRGAN model {path}", exc_info=True)
return img
model_descriptor = modelloader.load_spandrel_model(
info.local_data_path,
device=self.device,
prefer_half=(not cmd_opts.no_half and not cmd_opts.upcast_sampling),
expected_architecture="ESRGAN", # "RealESRGAN" isn't a specific thing for Spandrel
)
return upscale_with_model(
model_descriptor,
img,
tile_size=opts.ESRGAN_tile,
tile_overlap=opts.ESRGAN_tile_overlap,
# TODO: `outscale`?
)
def load_model(self, path):
for scaler in self.scalers:
if scaler.data_path == path:
if scaler.local_data_path.startswith("http"):
scaler.local_data_path = modelloader.load_file_from_url(
scaler.data_path,
model_dir=self.model_download_path,
)
if not os.path.exists(scaler.local_data_path):
raise FileNotFoundError(f"RealESRGAN data missing: {scaler.local_data_path}")
return scaler
raise ValueError(f"Unable to find model info: {path}")
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def get_realesrgan_models(scaler: UpscalerRealESRGAN):
return [
UpscalerData(
name="R-ESRGAN General 4xV3",
path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesr-general-x4v3.pth",
scale=4,
upscaler=scaler,
),
UpscalerData(
name="R-ESRGAN General WDN 4xV3",
path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesr-general-wdn-x4v3.pth",
scale=4,
upscaler=scaler,
),
UpscalerData(
name="R-ESRGAN AnimeVideo",
path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesr-animevideov3.pth",
scale=4,
upscaler=scaler,
),
UpscalerData(
name="R-ESRGAN 4x+",
path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth",
scale=4,
upscaler=scaler,
),
UpscalerData(
name="R-ESRGAN 4x+ Anime6B",
path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.2.4/RealESRGAN_x4plus_anime_6B.pth",
scale=4,
upscaler=scaler,
),
UpscalerData(
name="R-ESRGAN 2x+",
path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.1/RealESRGAN_x2plus.pth",
scale=2,
upscaler=scaler,
),
]