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# This file is adapted from gradio_*.py in https://github.com/lllyasviel/ControlNet/tree/f4748e3630d8141d7765e2bd9b1e348f47847707
# The original license file is LICENSE.ControlNet in this repo.
from __future__ import annotations
import gc
import pathlib
import sys
import cv2
import numpy as np
import PIL.Image
import torch
from diffusers import (ControlNetModel, DiffusionPipeline,
StableDiffusionControlNetPipeline,
UniPCMultistepScheduler)
repo_dir = pathlib.Path(__file__).parent
submodule_dir = repo_dir / 'ControlNet'
sys.path.append(submodule_dir.as_posix())
from annotator.canny import apply_canny
from annotator.hed import apply_hed, nms
from annotator.midas import apply_midas
from annotator.mlsd import apply_mlsd
from annotator.openpose import apply_openpose
from annotator.uniformer import apply_uniformer
from annotator.util import HWC3, resize_image
CONTROLNET_MODEL_IDS = {
'depth': 'lllyasviel/sd-controlnet-depth',
}
def download_all_controlnet_weights() -> None:
for model_id in CONTROLNET_MODEL_IDS.values():
ControlNetModel.from_pretrained(model_id)
class Model:
def __init__(self,
base_model_id: str = 'runwayml/stable-diffusion-v1-5',
task_name: str = 'canny'):
self.device = torch.device(
'cuda:0' if torch.cuda.is_available() else 'cpu')
self.base_model_id = ''
self.task_name = ''
self.pipe = self.load_pipe(base_model_id, task_name)
def load_pipe(self, base_model_id: str, task_name) -> DiffusionPipeline:
if base_model_id == self.base_model_id and task_name == self.task_name and hasattr(
self, 'pipe'):
return self.pipe
model_id = CONTROLNET_MODEL_IDS[task_name]
controlnet = ControlNetModel.from_pretrained(model_id,
torch_dtype=torch.float16)
pipe = StableDiffusionControlNetPipeline.from_pretrained(
base_model_id,
safety_checker=None,
controlnet=controlnet,
torch_dtype=torch.float16)
pipe.scheduler = UniPCMultistepScheduler.from_config(
pipe.scheduler.config)
pipe.enable_xformers_memory_efficient_attention()
pipe.to(self.device)
torch.cuda.empty_cache()
gc.collect()
self.base_model_id = base_model_id
self.task_name = task_name
return pipe
def set_base_model(self, base_model_id: str) -> str:
if not base_model_id or base_model_id == self.base_model_id:
return self.base_model_id
del self.pipe
torch.cuda.empty_cache()
gc.collect()
try:
self.pipe = self.load_pipe(base_model_id, self.task_name)
except Exception:
self.pipe = self.load_pipe(self.base_model_id, self.task_name)
return self.base_model_id
def load_controlnet_weight(self, task_name: str) -> None:
if task_name == self.task_name:
return
del self.pipe.controlnet
torch.cuda.empty_cache()
gc.collect()
model_id = CONTROLNET_MODEL_IDS[task_name]
controlnet = ControlNetModel.from_pretrained(model_id,
torch_dtype=torch.float16)
controlnet.to(self.device)
torch.cuda.empty_cache()
gc.collect()
self.pipe.controlnet = controlnet
self.task_name = task_name
def get_prompt(self, prompt: str, additional_prompt: str) -> str:
if not prompt:
prompt = additional_prompt
else:
prompt = f'{prompt}, {additional_prompt}'
return prompt
@torch.autocast('cuda')
def run_pipe(
self,
prompt: str,
negative_prompt: str,
control_image: PIL.Image.Image,
num_images: int,
num_steps: int,
guidance_scale: float,
seed: int,
) -> list[PIL.Image.Image]:
if seed == -1:
seed = np.random.randint(0, np.iinfo(np.int64).max)
generator = torch.Generator().manual_seed(seed)
return self.pipe(prompt=prompt,
negative_prompt=negative_prompt,
guidance_scale=guidance_scale,
num_images_per_prompt=num_images,
num_inference_steps=num_steps,
generator=generator,
image=control_image).images
@staticmethod
def preprocess_depth(
input_image: np.ndarray,
image_resolution: int,
detect_resolution: int,
is_depth_image: bool,
) -> tuple[PIL.Image.Image, PIL.Image.Image]:
input_image = HWC3(input_image)
if not is_depth_image:
control_image, _ = apply_midas(
resize_image(input_image, detect_resolution))
control_image = HWC3(control_image)
image = resize_image(input_image, image_resolution)
H, W = image.shape[:2]
control_image = cv2.resize(control_image, (W, H),
interpolation=cv2.INTER_LINEAR)
else:
control_image = resize_image(input_image, image_resolution)
return PIL.Image.fromarray(control_image), PIL.Image.fromarray(
control_image)
@torch.inference_mode()
def process_depth(
self,
input_image: np.ndarray,
prompt: str,
additional_prompt: str,
negative_prompt: str,
num_images: int,
image_resolution: int,
detect_resolution: int,
num_steps: int,
guidance_scale: float,
seed: int,
is_depth_image: bool,
) -> list[PIL.Image.Image]:
control_image, vis_control_image = self.preprocess_depth(
input_image=input_image,
image_resolution=image_resolution,
detect_resolution=detect_resolution,
is_depth_image=is_depth_image,
)
self.load_controlnet_weight('depth')
results = self.run_pipe(
prompt=self.get_prompt(prompt, additional_prompt),
negative_prompt=negative_prompt,
control_image=control_image,
num_images=num_images,
num_steps=num_steps,
guidance_scale=guidance_scale,
seed=seed,
)
return [vis_control_image] + results
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