File size: 9,642 Bytes
2ba7d38 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 |
# Prediction interface for Cog ⚙️
# https://github.com/replicate/cog/blob/main/docs/python.md
from cog import BasePredictor, Input, Path
import os
import time
import torch
import shutil
import subprocess
import numpy as np
from typing import List
from diffusers.utils import load_image
from transformers import CLIPImageProcessor
from diffusers import (
StableDiffusionXLPipeline,
StableDiffusionXLImg2ImgPipeline,
StableDiffusionXLInpaintPipeline,
DDIMScheduler,
DPMSolverMultistepScheduler,
EulerAncestralDiscreteScheduler,
EulerDiscreteScheduler,
HeunDiscreteScheduler,
PNDMScheduler,
KDPM2AncestralDiscreteScheduler,
AutoencoderKL
)
from diffusers.pipelines.stable_diffusion.safety_checker import (
StableDiffusionSafetyChecker,
)
MODEL_NAME = "dataautogpt3/ProteusV0.4-Lightning"
MODEL_CACHE = "checkpoints"
SAFETY_CACHE = "safety-cache"
FEATURE_EXTRACTOR = "feature-extractor"
SAFETY_URL = "https://weights.replicate.delivery/default/sdxl/safety-1.0.tar"
MODEL_URL = "https://weights.replicate.delivery/default/dataautogpt3/proteusv0.4-lightning.tar"
class KarrasDPM:
def from_config(config):
return DPMSolverMultistepScheduler.from_config(config, use_karras_sigmas=True)
SCHEDULERS = {
"DDIM": DDIMScheduler,
"DPMSolverMultistep": DPMSolverMultistepScheduler,
"HeunDiscrete": HeunDiscreteScheduler,
"KarrasDPM": KarrasDPM,
"K_EULER_ANCESTRAL": EulerAncestralDiscreteScheduler,
"K_EULER": EulerDiscreteScheduler,
"PNDM": PNDMScheduler,
"DPM++2MSDE": KDPM2AncestralDiscreteScheduler,
}
def download_weights(url, dest):
start = time.time()
print("downloading url: ", url)
print("downloading to: ", dest)
subprocess.check_call(["pget", "-x", url, dest], close_fds=False)
print("downloading took: ", time.time() - start)
class Predictor(BasePredictor):
def setup(self) -> None:
"""Load the model into memory to make running multiple predictions efficient"""
start = time.time()
print("Loading safety checker...")
if not os.path.exists(SAFETY_CACHE):
download_weights(SAFETY_URL, SAFETY_CACHE)
print("Loading model")
if not os.path.exists(MODEL_CACHE):
download_weights(MODEL_URL, MODEL_CACHE)
self.safety_checker = StableDiffusionSafetyChecker.from_pretrained(
SAFETY_CACHE, torch_dtype=torch.float16
).to("cuda")
self.feature_extractor = CLIPImageProcessor.from_pretrained(FEATURE_EXTRACTOR)
print("Loading vae")
vae = AutoencoderKL.from_pretrained(
"madebyollin/sdxl-vae-fp16-fix",
torch_dtype=torch.float16
)
print("Loading txt2img pipeline...")
self.txt2img_pipe = StableDiffusionXLPipeline.from_pretrained(
MODEL_NAME,
vae=vae,
torch_dtype=torch.float16,
cache_dir=MODEL_CACHE,
).to('cuda')
print("Loading SDXL img2img pipeline...")
self.img2img_pipe = StableDiffusionXLImg2ImgPipeline(
vae=self.txt2img_pipe.vae,
text_encoder=self.txt2img_pipe.text_encoder,
text_encoder_2=self.txt2img_pipe.text_encoder_2,
tokenizer=self.txt2img_pipe.tokenizer,
tokenizer_2=self.txt2img_pipe.tokenizer_2,
unet=self.txt2img_pipe.unet,
scheduler=self.txt2img_pipe.scheduler,
).to("cuda")
print("Loading SDXL inpaint pipeline...")
self.inpaint_pipe = StableDiffusionXLInpaintPipeline(
vae=self.txt2img_pipe.vae,
text_encoder=self.txt2img_pipe.text_encoder,
text_encoder_2=self.txt2img_pipe.text_encoder_2,
tokenizer=self.txt2img_pipe.tokenizer,
tokenizer_2=self.txt2img_pipe.tokenizer_2,
unet=self.txt2img_pipe.unet,
scheduler=self.txt2img_pipe.scheduler,
).to("cuda")
print("setup took: ", time.time() - start)
def load_image(self, path):
shutil.copyfile(path, "/tmp/image.png")
return load_image("/tmp/image.png").convert("RGB")
def run_safety_checker(self, image):
safety_checker_input = self.feature_extractor(image, return_tensors="pt").to(
"cuda"
)
np_image = [np.array(val) for val in image]
image, has_nsfw_concept = self.safety_checker(
images=np_image,
clip_input=safety_checker_input.pixel_values.to(torch.float16),
)
return image, has_nsfw_concept
@torch.inference_mode()
def predict(
self,
prompt: str = Input(
description="Input prompt",
default="3 fish in a fish tank wearing adorable outfits, best quality, hd"
),
negative_prompt: str = Input(
description="Negative Input prompt",
default="nsfw, bad quality, bad anatomy, worst quality, low quality, low resolutions, extra fingers, blur, blurry, ugly, wrongs proportions, watermark, image artifacts, lowres, ugly, jpeg artifacts, deformed, noisy image"
),
image: Path = Input(
description="Input image for img2img or inpaint mode",
default=None,
),
mask: Path = Input(
description="Input mask for inpaint mode. Black areas will be preserved, white areas will be inpainted.",
default=None,
),
width: int = Input(
description="Width of output image. Recommended 1024 or 1280",
default=1024
),
height: int = Input(
description="Height of output image. Recommended 1024 or 1280",
default=1024
),
num_outputs: int = Input(
description="Number of images to output.",
ge=1,
le=4,
default=1,
),
scheduler: str = Input(
description="scheduler",
choices=SCHEDULERS.keys(),
default="K_EULER_ANCESTRAL",
),
num_inference_steps: int = Input(
description="Number of denoising steps", ge=1, le=100, default=8
),
guidance_scale: float = Input(
description="Scale for classifier-free guidance", ge=0, le=10, default=2
),
prompt_strength: float = Input(
description="Prompt strength when using img2img / inpaint. 1.0 corresponds to full destruction of information in image",
ge=0.0,
le=1.0,
default=0.8,
),
seed: int = Input(
description="Random seed. Leave blank to randomize the seed", default=None
),
apply_watermark: bool = Input(
description="Applies a watermark to enable determining if an image is generated in downstream applications. If you have other provisions for generating or deploying images safely, you can use this to disable watermarking.",
default=True,
),
disable_safety_checker: bool = Input(
description="Disable safety checker for generated images. This feature is only available through the API. See https://replicate.com/docs/how-does-replicate-work#safety",
default=False
)
) -> List[Path]:
"""Run a single prediction on the model"""
if seed is None:
seed = int.from_bytes(os.urandom(4), "big")
print(f"Using seed: {seed}")
generator = torch.Generator("cuda").manual_seed(seed)
sdxl_kwargs = {}
print(f"Prompt: {prompt}")
if image and mask:
print("inpainting mode")
sdxl_kwargs["image"] = self.load_image(image)
sdxl_kwargs["mask_image"] = self.load_image(mask)
sdxl_kwargs["strength"] = prompt_strength
sdxl_kwargs["width"] = width
sdxl_kwargs["height"] = height
pipe = self.inpaint_pipe
elif image:
print("img2img mode")
sdxl_kwargs["image"] = self.load_image(image)
sdxl_kwargs["strength"] = prompt_strength
pipe = self.img2img_pipe
else:
print("txt2img mode")
sdxl_kwargs["width"] = width
sdxl_kwargs["height"] = height
pipe = self.txt2img_pipe
# toggles watermark for this prediction
if not apply_watermark:
watermark_cache = pipe.watermark
pipe.watermark = None
pipe.scheduler = SCHEDULERS[scheduler].from_config(pipe.scheduler.config)
common_args = {
"prompt": [prompt] * num_outputs,
"negative_prompt": [negative_prompt] * num_outputs,
"guidance_scale": guidance_scale,
"generator": generator,
"num_inference_steps": num_inference_steps,
}
output = pipe(**common_args, **sdxl_kwargs)
if not apply_watermark:
pipe.watermark = watermark_cache
if not disable_safety_checker:
_, has_nsfw_content = self.run_safety_checker(output.images)
output_paths = []
for i, image in enumerate(output.images):
if not disable_safety_checker:
if has_nsfw_content[i]:
print(f"NSFW content detected in image {i}")
continue
output_path = f"/tmp/out-{i}.png"
image.save(output_path)
output_paths.append(Path(output_path))
if len(output_paths) == 0:
raise Exception(
f"NSFW content detected. Try running it again, or try a different prompt."
)
return output_paths |