mirror of
https://github.com/easydiffusion/easydiffusion.git
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781 lines
31 KiB
Python
781 lines
31 KiB
Python
"""runtime.py: torch device owned by a thread.
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Notes:
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Avoid device switching, transfering all models will get too complex.
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To use a diffrent device signal the current render device to exit
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And then start a new clean thread for the new device.
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"""
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import json
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import os, re
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import traceback
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import torch
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import numpy as np
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from gc import collect as gc_collect
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from omegaconf import OmegaConf
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from PIL import Image, ImageOps
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from tqdm import tqdm, trange
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from itertools import islice
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from einops import rearrange
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import time
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from pytorch_lightning import seed_everything
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from torch import autocast
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from contextlib import nullcontext
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from einops import rearrange, repeat
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from ldm.util import instantiate_from_config
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from optimizedSD.optimUtils import split_weighted_subprompts
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from transformers import logging
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from gfpgan import GFPGANer
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from basicsr.archs.rrdbnet_arch import RRDBNet
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from realesrgan import RealESRGANer
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import uuid
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logging.set_verbosity_error()
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# consts
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config_yaml = "optimizedSD/v1-inference.yaml"
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filename_regex = re.compile('[^a-zA-Z0-9]')
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force_gfpgan_to_cuda0 = True # workaround: gfpgan currently works only on cuda:0
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# api stuff
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from sd_internal import device_manager
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from . import Request, Response, Image as ResponseImage
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import base64
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from io import BytesIO
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#from colorama import Fore
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from threading import local as LocalThreadVars
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thread_data = LocalThreadVars()
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def thread_init(device):
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# Thread bound properties
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thread_data.stop_processing = False
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thread_data.temp_images = {}
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thread_data.ckpt_file = None
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thread_data.vae_file = None
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thread_data.gfpgan_file = None
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thread_data.real_esrgan_file = None
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thread_data.model = None
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thread_data.modelCS = None
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thread_data.modelFS = None
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thread_data.model_gfpgan = None
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thread_data.model_real_esrgan = None
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thread_data.model_is_half = False
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thread_data.model_fs_is_half = False
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thread_data.device = None
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thread_data.device_name = None
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thread_data.unet_bs = 1
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thread_data.precision = 'autocast'
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thread_data.sampler_plms = None
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thread_data.sampler_ddim = None
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thread_data.turbo = False
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thread_data.force_full_precision = False
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thread_data.reduced_memory = True
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device_manager.device_init(thread_data, device)
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def load_model_ckpt():
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if not thread_data.ckpt_file: raise ValueError(f'Thread ckpt_file is undefined.')
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if not os.path.exists(thread_data.ckpt_file + '.ckpt'): raise FileNotFoundError(f'Cannot find {thread_data.ckpt_file}.ckpt')
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if not thread_data.precision:
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thread_data.precision = 'full' if thread_data.force_full_precision else 'autocast'
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if not thread_data.unet_bs:
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thread_data.unet_bs = 1
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if thread_data.device == 'cpu':
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thread_data.precision = 'full'
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print('loading', thread_data.ckpt_file + '.ckpt', 'to device', thread_data.device, 'using precision', thread_data.precision)
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sd = load_model_from_config(thread_data.ckpt_file + '.ckpt')
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li, lo = [], []
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for key, value in sd.items():
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sp = key.split(".")
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if (sp[0]) == "model":
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if "input_blocks" in sp:
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li.append(key)
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elif "middle_block" in sp:
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li.append(key)
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elif "time_embed" in sp:
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li.append(key)
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else:
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lo.append(key)
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for key in li:
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sd["model1." + key[6:]] = sd.pop(key)
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for key in lo:
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sd["model2." + key[6:]] = sd.pop(key)
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config = OmegaConf.load(f"{config_yaml}")
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model = instantiate_from_config(config.modelUNet)
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_, _ = model.load_state_dict(sd, strict=False)
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model.eval()
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model.cdevice = torch.device(thread_data.device)
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model.unet_bs = thread_data.unet_bs
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model.turbo = thread_data.turbo
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# if thread_data.device != 'cpu':
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# model.to(thread_data.device)
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#if thread_data.reduced_memory:
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#model.model1.to("cpu")
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#model.model2.to("cpu")
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thread_data.model = model
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modelCS = instantiate_from_config(config.modelCondStage)
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_, _ = modelCS.load_state_dict(sd, strict=False)
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modelCS.eval()
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modelCS.cond_stage_model.device = torch.device(thread_data.device)
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# if thread_data.device != 'cpu':
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# if thread_data.reduced_memory:
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# modelCS.to('cpu')
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# else:
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# modelCS.to(thread_data.device) # Preload on device if not already there.
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thread_data.modelCS = modelCS
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modelFS = instantiate_from_config(config.modelFirstStage)
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_, _ = modelFS.load_state_dict(sd, strict=False)
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if thread_data.vae_file is not None:
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for model_extension in ['.ckpt', '.vae.pt']:
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if os.path.exists(thread_data.vae_file + model_extension):
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print(f"Loading VAE weights from: {thread_data.vae_file}{model_extension}")
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vae_ckpt = torch.load(thread_data.vae_file + model_extension, map_location="cpu")
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vae_dict = {k: v for k, v in vae_ckpt["state_dict"].items() if k[0:4] != "loss"}
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modelFS.first_stage_model.load_state_dict(vae_dict, strict=False)
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break
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else:
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print(f'Cannot find VAE file: {thread_data.vae_file}{model_extension}')
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modelFS.eval()
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# if thread_data.device != 'cpu':
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# if thread_data.reduced_memory:
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# modelFS.to('cpu')
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# else:
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# modelFS.to(thread_data.device) # Preload on device if not already there.
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thread_data.modelFS = modelFS
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del sd
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if thread_data.device != "cpu" and thread_data.precision == "autocast":
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thread_data.model.half()
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thread_data.modelCS.half()
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thread_data.modelFS.half()
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thread_data.model_is_half = True
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thread_data.model_fs_is_half = True
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else:
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thread_data.model_is_half = False
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thread_data.model_fs_is_half = False
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print(f'''loaded model
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model file: {thread_data.ckpt_file}.ckpt
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model.device: {model.device}
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modelCS.device: {modelCS.cond_stage_model.device}
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modelFS.device: {thread_data.modelFS.device}
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using precision: {thread_data.precision}''')
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def unload_filters():
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if thread_data.model_gfpgan is not None:
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if thread_data.device != 'cpu': thread_data.model_gfpgan.gfpgan.to('cpu')
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del thread_data.model_gfpgan
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thread_data.model_gfpgan = None
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if thread_data.model_real_esrgan is not None:
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if thread_data.device != 'cpu': thread_data.model_real_esrgan.model.to('cpu')
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del thread_data.model_real_esrgan
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thread_data.model_real_esrgan = None
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gc()
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def unload_models():
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if thread_data.model is not None:
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print('Unloading models...')
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if thread_data.device != 'cpu':
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thread_data.modelFS.to('cpu')
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thread_data.modelCS.to('cpu')
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thread_data.model.model1.to("cpu")
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thread_data.model.model2.to("cpu")
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del thread_data.model
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del thread_data.modelCS
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del thread_data.modelFS
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thread_data.model = None
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thread_data.modelCS = None
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thread_data.modelFS = None
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gc()
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def wait_model_move_to(model, target_device): # Send to target_device and wait until complete.
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if thread_data.device == target_device: return
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start_mem = torch.cuda.memory_allocated(thread_data.device) / 1e6
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if start_mem <= 0: return
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model_name = model.__class__.__name__
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print(f'Device {thread_data.device} - Sending model {model_name} to {target_device} | Memory transfer starting. Memory Used: {round(start_mem)}Mb')
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start_time = time.time()
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model.to(target_device)
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time_step = start_time
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WARNING_TIMEOUT = 1.5 # seconds - Show activity in console after timeout.
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last_mem = start_mem
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is_transfering = True
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while is_transfering:
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time.sleep(0.5) # 500ms
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mem = torch.cuda.memory_allocated(thread_data.device) / 1e6
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is_transfering = bool(mem > 0 and mem < last_mem) # still stuff loaded, but less than last time.
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last_mem = mem
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if not is_transfering:
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break;
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if time.time() - time_step > WARNING_TIMEOUT: # Long delay, print to console to show activity.
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print(f'Device {thread_data.device} - Waiting for Memory transfer. Memory Used: {round(mem)}Mb, Transfered: {round(start_mem - mem)}Mb')
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time_step = time.time()
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print(f'Device {thread_data.device} - {model_name} Moved: {round(start_mem - last_mem)}Mb in {round(time.time() - start_time, 3)} seconds to {target_device}')
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def load_model_gfpgan():
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if thread_data.gfpgan_file is None: raise ValueError(f'Thread gfpgan_file is undefined.')
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# hack for a bug in facexlib: https://github.com/xinntao/facexlib/pull/19/files
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from facexlib.detection import retinaface
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retinaface.device = torch.device(thread_data.device)
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print('forced retinaface.device to', thread_data.device)
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model_path = thread_data.gfpgan_file + ".pth"
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thread_data.model_gfpgan = GFPGANer(device=torch.device(thread_data.device), model_path=model_path, upscale=1, arch='clean', channel_multiplier=2, bg_upsampler=None)
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print('loaded', thread_data.gfpgan_file, 'to', thread_data.model_gfpgan.device, 'precision', thread_data.precision)
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def load_model_real_esrgan():
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if thread_data.real_esrgan_file is None: raise ValueError(f'Thread real_esrgan_file is undefined.')
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model_path = thread_data.real_esrgan_file + ".pth"
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RealESRGAN_models = {
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'RealESRGAN_x4plus': RRDBNet(num_in_ch=3, num_out_ch=3, num_feat=64, num_block=23, num_grow_ch=32, scale=4),
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'RealESRGAN_x4plus_anime_6B': RRDBNet(num_in_ch=3, num_out_ch=3, num_feat=64, num_block=6, num_grow_ch=32, scale=4)
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}
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model_to_use = RealESRGAN_models[thread_data.real_esrgan_file]
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if thread_data.device == 'cpu':
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thread_data.model_real_esrgan = RealESRGANer(device=torch.device(thread_data.device), scale=2, model_path=model_path, model=model_to_use, pre_pad=0, half=False) # cpu does not support half
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#thread_data.model_real_esrgan.device = torch.device(thread_data.device)
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thread_data.model_real_esrgan.model.to('cpu')
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else:
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thread_data.model_real_esrgan = RealESRGANer(device=torch.device(thread_data.device), scale=2, model_path=model_path, model=model_to_use, pre_pad=0, half=thread_data.model_is_half)
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thread_data.model_real_esrgan.model.name = thread_data.real_esrgan_file
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print('loaded ', thread_data.real_esrgan_file, 'to', thread_data.model_real_esrgan.device, 'precision', thread_data.precision)
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def get_session_out_path(disk_path, session_id):
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if disk_path is None: return None
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if session_id is None: return None
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session_out_path = os.path.join(disk_path, filename_regex.sub('_',session_id))
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os.makedirs(session_out_path, exist_ok=True)
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return session_out_path
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def get_base_path(disk_path, session_id, prompt, img_id, ext, suffix=None):
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if disk_path is None: return None
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if session_id is None: return None
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if ext is None: raise Exception('Missing ext')
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session_out_path = get_session_out_path(disk_path, session_id)
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prompt_flattened = filename_regex.sub('_', prompt)[:50]
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if suffix is not None:
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return os.path.join(session_out_path, f"{prompt_flattened}_{img_id}_{suffix}.{ext}")
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return os.path.join(session_out_path, f"{prompt_flattened}_{img_id}.{ext}")
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def apply_filters(filter_name, image_data, model_path=None):
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print(f'Applying filter {filter_name}...')
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gc() # Free space before loading new data.
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if isinstance(image_data, torch.Tensor):
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image_data.to(thread_data.device)
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if filter_name == 'gfpgan':
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if model_path is not None and model_path != thread_data.gfpgan_file:
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thread_data.gfpgan_file = model_path
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load_model_gfpgan()
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elif not thread_data.model_gfpgan:
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load_model_gfpgan()
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if thread_data.model_gfpgan is None: raise Exception('Model "gfpgan" not loaded.')
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print('enhance with', thread_data.gfpgan_file, 'on', thread_data.model_gfpgan.device, 'precision', thread_data.precision)
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_, _, output = thread_data.model_gfpgan.enhance(image_data[:,:,::-1], has_aligned=False, only_center_face=False, paste_back=True)
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image_data = output[:,:,::-1]
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if filter_name == 'real_esrgan':
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if model_path is not None and model_path != thread_data.real_esrgan_file:
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thread_data.real_esrgan_file = model_path
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load_model_real_esrgan()
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elif not thread_data.model_real_esrgan:
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load_model_real_esrgan()
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if thread_data.model_real_esrgan is None: raise Exception('Model "gfpgan" not loaded.')
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print('enhance with', thread_data.real_esrgan_file, 'on', thread_data.model_real_esrgan.device, 'precision', thread_data.precision)
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output, _ = thread_data.model_real_esrgan.enhance(image_data[:,:,::-1])
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image_data = output[:,:,::-1]
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return image_data
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def mk_img(req: Request):
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try:
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yield from do_mk_img(req)
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except Exception as e:
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print(traceback.format_exc())
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if thread_data.device != 'cpu':
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thread_data.modelFS.to('cpu')
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thread_data.modelCS.to('cpu')
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thread_data.model.model1.to("cpu")
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thread_data.model.model2.to("cpu")
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gc() # Release from memory.
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yield json.dumps({
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"status": 'failed',
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"detail": str(e)
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})
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def update_temp_img(req, x_samples):
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partial_images = []
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for i in range(req.num_outputs):
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x_sample_ddim = thread_data.modelFS.decode_first_stage(x_samples[i].unsqueeze(0))
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x_sample = torch.clamp((x_sample_ddim + 1.0) / 2.0, min=0.0, max=1.0)
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x_sample = 255.0 * rearrange(x_sample[0].cpu().numpy(), "c h w -> h w c")
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x_sample = x_sample.astype(np.uint8)
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img = Image.fromarray(x_sample)
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buf = BytesIO()
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img.save(buf, format='JPEG')
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buf.seek(0)
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del img, x_sample, x_sample_ddim
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# don't delete x_samples, it is used in the code that called this callback
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thread_data.temp_images[str(req.session_id) + '/' + str(i)] = buf
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partial_images.append({'path': f'/image/tmp/{req.session_id}/{i}'})
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return partial_images
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# Build and return the apropriate generator for do_mk_img
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def get_image_progress_generator(req, extra_props=None):
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if not req.stream_progress_updates:
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def empty_callback(x_samples, i): return x_samples
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return empty_callback
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thread_data.partial_x_samples = None
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last_callback_time = -1
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def img_callback(x_samples, i):
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nonlocal last_callback_time
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thread_data.partial_x_samples = x_samples
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step_time = time.time() - last_callback_time if last_callback_time != -1 else -1
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last_callback_time = time.time()
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progress = {"step": i, "step_time": step_time}
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if extra_props is not None:
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progress.update(extra_props)
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if req.stream_image_progress and i % 5 == 0:
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progress['output'] = update_temp_img(req, x_samples)
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yield json.dumps(progress)
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if thread_data.stop_processing:
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raise UserInitiatedStop("User requested that we stop processing")
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return img_callback
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def do_mk_img(req: Request):
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thread_data.stop_processing = False
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res = Response()
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res.request = req
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res.images = []
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thread_data.temp_images.clear()
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# custom model support:
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# the req.use_stable_diffusion_model needs to be a valid path
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# to the ckpt file (without the extension).
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if not os.path.exists(req.use_stable_diffusion_model + '.ckpt'): raise FileNotFoundError(f'Cannot find {req.use_stable_diffusion_model}.ckpt')
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needs_model_reload = False
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if not thread_data.model or thread_data.ckpt_file != req.use_stable_diffusion_model or thread_data.vae_file != req.use_vae_model:
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thread_data.ckpt_file = req.use_stable_diffusion_model
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thread_data.vae_file = req.use_vae_model
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needs_model_reload = True
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if thread_data.device != 'cpu':
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if (thread_data.precision == 'autocast' and (req.use_full_precision or not thread_data.model_is_half)) or \
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(thread_data.precision == 'full' and not req.use_full_precision and not thread_data.force_full_precision):
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thread_data.precision = 'full' if req.use_full_precision else 'autocast'
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needs_model_reload = True
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if needs_model_reload:
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unload_models()
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unload_filters()
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load_model_ckpt()
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if thread_data.turbo != req.turbo:
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thread_data.turbo = req.turbo
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thread_data.model.turbo = req.turbo
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# Start by cleaning memory, loading and unloading things can leave memory allocated.
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gc()
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opt_prompt = req.prompt
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opt_seed = req.seed
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opt_n_iter = 1
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opt_C = 4
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opt_f = 8
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opt_ddim_eta = 0.0
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print(req, '\n device', torch.device(thread_data.device), "as", thread_data.device_name)
|
|
print('\n\n Using precision:', thread_data.precision)
|
|
|
|
seed_everything(opt_seed)
|
|
|
|
batch_size = req.num_outputs
|
|
prompt = opt_prompt
|
|
assert prompt is not None
|
|
data = [batch_size * [prompt]]
|
|
|
|
if thread_data.precision == "autocast" and thread_data.device != "cpu":
|
|
precision_scope = autocast
|
|
else:
|
|
precision_scope = nullcontext
|
|
|
|
mask = None
|
|
|
|
if req.init_image is None:
|
|
handler = _txt2img
|
|
|
|
init_latent = None
|
|
t_enc = None
|
|
else:
|
|
handler = _img2img
|
|
|
|
init_image = load_img(req.init_image, req.width, req.height)
|
|
init_image = init_image.to(thread_data.device)
|
|
|
|
if thread_data.device != "cpu" and thread_data.precision == "autocast":
|
|
init_image = init_image.half()
|
|
|
|
thread_data.modelFS.to(thread_data.device)
|
|
|
|
init_image = repeat(init_image, '1 ... -> b ...', b=batch_size)
|
|
init_latent = thread_data.modelFS.get_first_stage_encoding(thread_data.modelFS.encode_first_stage(init_image)) # move to latent space
|
|
|
|
if req.mask is not None:
|
|
mask = load_mask(req.mask, req.width, req.height, init_latent.shape[2], init_latent.shape[3], True).to(thread_data.device)
|
|
mask = mask[0][0].unsqueeze(0).repeat(4, 1, 1).unsqueeze(0)
|
|
mask = repeat(mask, '1 ... -> b ...', b=batch_size)
|
|
|
|
if thread_data.device != "cpu" and thread_data.precision == "autocast":
|
|
mask = mask.half()
|
|
|
|
# Send to CPU and wait until complete.
|
|
wait_model_move_to(thread_data.modelFS, 'cpu')
|
|
|
|
assert 0. <= req.prompt_strength <= 1., 'can only work with strength in [0.0, 1.0]'
|
|
t_enc = int(req.prompt_strength * req.num_inference_steps)
|
|
print(f"target t_enc is {t_enc} steps")
|
|
|
|
if req.save_to_disk_path is not None:
|
|
session_out_path = get_session_out_path(req.save_to_disk_path, req.session_id)
|
|
else:
|
|
session_out_path = None
|
|
|
|
with torch.no_grad():
|
|
for n in trange(opt_n_iter, desc="Sampling"):
|
|
for prompts in tqdm(data, desc="data"):
|
|
|
|
with precision_scope("cuda"):
|
|
if thread_data.reduced_memory:
|
|
thread_data.modelCS.to(thread_data.device)
|
|
uc = None
|
|
if req.guidance_scale != 1.0:
|
|
uc = thread_data.modelCS.get_learned_conditioning(batch_size * [req.negative_prompt])
|
|
if isinstance(prompts, tuple):
|
|
prompts = list(prompts)
|
|
|
|
subprompts, weights = split_weighted_subprompts(prompts[0])
|
|
if len(subprompts) > 1:
|
|
c = torch.zeros_like(uc)
|
|
totalWeight = sum(weights)
|
|
# normalize each "sub prompt" and add it
|
|
for i in range(len(subprompts)):
|
|
weight = weights[i]
|
|
# if not skip_normalize:
|
|
weight = weight / totalWeight
|
|
c = torch.add(c, thread_data.modelCS.get_learned_conditioning(subprompts[i]), alpha=weight)
|
|
else:
|
|
c = thread_data.modelCS.get_learned_conditioning(prompts)
|
|
|
|
if thread_data.reduced_memory:
|
|
thread_data.modelFS.to(thread_data.device)
|
|
|
|
n_steps = req.num_inference_steps if req.init_image is None else t_enc
|
|
img_callback = get_image_progress_generator(req, {"total_steps": n_steps})
|
|
|
|
# run the handler
|
|
try:
|
|
print('Running handler...')
|
|
if handler == _txt2img:
|
|
x_samples = _txt2img(req.width, req.height, req.num_outputs, req.num_inference_steps, req.guidance_scale, None, opt_C, opt_f, opt_ddim_eta, c, uc, opt_seed, img_callback, mask, req.sampler)
|
|
else:
|
|
x_samples = _img2img(init_latent, t_enc, batch_size, req.guidance_scale, c, uc, req.num_inference_steps, opt_ddim_eta, opt_seed, img_callback, mask)
|
|
|
|
if req.stream_progress_updates:
|
|
yield from x_samples
|
|
if hasattr(thread_data, 'partial_x_samples'):
|
|
if thread_data.partial_x_samples is not None:
|
|
x_samples = thread_data.partial_x_samples
|
|
del thread_data.partial_x_samples
|
|
except UserInitiatedStop:
|
|
if not hasattr(thread_data, 'partial_x_samples'):
|
|
continue
|
|
if thread_data.partial_x_samples is None:
|
|
del thread_data.partial_x_samples
|
|
continue
|
|
x_samples = thread_data.partial_x_samples
|
|
del thread_data.partial_x_samples
|
|
|
|
print("decoding images")
|
|
img_data = [None] * batch_size
|
|
for i in range(batch_size):
|
|
x_samples_ddim = thread_data.modelFS.decode_first_stage(x_samples[i].unsqueeze(0))
|
|
x_sample = torch.clamp((x_samples_ddim + 1.0) / 2.0, min=0.0, max=1.0)
|
|
x_sample = 255.0 * rearrange(x_sample[0].cpu().numpy(), "c h w -> h w c")
|
|
x_sample = x_sample.astype(np.uint8)
|
|
img_data[i] = x_sample
|
|
del x_samples, x_samples_ddim, x_sample
|
|
|
|
if thread_data.reduced_memory:
|
|
# Send to CPU and wait until complete.
|
|
wait_model_move_to(thread_data.modelFS, 'cpu')
|
|
|
|
print("saving images")
|
|
for i in range(batch_size):
|
|
img = Image.fromarray(img_data[i])
|
|
img_id = base64.b64encode(int(time.time()+i).to_bytes(8, 'big')).decode() # Generate unique ID based on time.
|
|
img_id = img_id.translate({43:None, 47:None, 61:None})[-8:] # Remove + / = and keep last 8 chars.
|
|
|
|
has_filters = (req.use_face_correction is not None and req.use_face_correction.startswith('GFPGAN')) or \
|
|
(req.use_upscale is not None and req.use_upscale.startswith('RealESRGAN'))
|
|
|
|
return_orig_img = not has_filters or not req.show_only_filtered_image
|
|
|
|
if thread_data.stop_processing:
|
|
return_orig_img = True
|
|
|
|
if req.save_to_disk_path is not None:
|
|
if return_orig_img:
|
|
img_out_path = get_base_path(req.save_to_disk_path, req.session_id, prompts[0], img_id, req.output_format)
|
|
save_image(img, img_out_path)
|
|
meta_out_path = get_base_path(req.save_to_disk_path, req.session_id, prompts[0], img_id, 'txt')
|
|
save_metadata(meta_out_path, req, prompts[0], opt_seed)
|
|
|
|
if return_orig_img:
|
|
img_str = img_to_base64_str(img, req.output_format)
|
|
res_image_orig = ResponseImage(data=img_str, seed=opt_seed)
|
|
res.images.append(res_image_orig)
|
|
|
|
if req.save_to_disk_path is not None:
|
|
res_image_orig.path_abs = img_out_path
|
|
del img
|
|
|
|
if has_filters and not thread_data.stop_processing:
|
|
filters_applied = []
|
|
if req.use_face_correction:
|
|
img_data[i] = apply_filters('gfpgan', img_data[i], req.use_face_correction)
|
|
filters_applied.append(req.use_face_correction)
|
|
if req.use_upscale:
|
|
img_data[i] = apply_filters('real_esrgan', img_data[i], req.use_upscale)
|
|
filters_applied.append(req.use_upscale)
|
|
if (len(filters_applied) > 0):
|
|
filtered_image = Image.fromarray(img_data[i])
|
|
filtered_img_data = img_to_base64_str(filtered_image, req.output_format)
|
|
response_image = ResponseImage(data=filtered_img_data, seed=opt_seed)
|
|
res.images.append(response_image)
|
|
if req.save_to_disk_path is not None:
|
|
filtered_img_out_path = get_base_path(req.save_to_disk_path, req.session_id, prompts[0], img_id, req.output_format, "_".join(filters_applied))
|
|
save_image(filtered_image, filtered_img_out_path)
|
|
response_image.path_abs = filtered_img_out_path
|
|
del filtered_image
|
|
# Filter Applied, move to next seed
|
|
opt_seed += 1
|
|
|
|
# if thread_data.reduced_memory:
|
|
# unload_filters()
|
|
del img_data
|
|
gc()
|
|
if thread_data.device != 'cpu':
|
|
print(f'memory_final = {round(torch.cuda.memory_allocated(thread_data.device) / 1e6, 2)}Mb')
|
|
|
|
print('Task completed')
|
|
yield json.dumps(res.json())
|
|
|
|
def save_image(img, img_out_path):
|
|
try:
|
|
img.save(img_out_path)
|
|
except:
|
|
print('could not save the file', traceback.format_exc())
|
|
|
|
def save_metadata(meta_out_path, req, prompt, opt_seed):
|
|
metadata = f'''{prompt}
|
|
Width: {req.width}
|
|
Height: {req.height}
|
|
Seed: {opt_seed}
|
|
Steps: {req.num_inference_steps}
|
|
Guidance Scale: {req.guidance_scale}
|
|
Prompt Strength: {req.prompt_strength}
|
|
Use Face Correction: {req.use_face_correction}
|
|
Use Upscaling: {req.use_upscale}
|
|
Sampler: {req.sampler}
|
|
Negative Prompt: {req.negative_prompt}
|
|
Stable Diffusion model: {req.use_stable_diffusion_model + '.ckpt'}
|
|
VAE model: {req.use_vae_model}
|
|
'''
|
|
try:
|
|
with open(meta_out_path, 'w', encoding='utf-8') as f:
|
|
f.write(metadata)
|
|
except:
|
|
print('could not save the file', traceback.format_exc())
|
|
|
|
def _txt2img(opt_W, opt_H, opt_n_samples, opt_ddim_steps, opt_scale, start_code, opt_C, opt_f, opt_ddim_eta, c, uc, opt_seed, img_callback, mask, sampler_name):
|
|
shape = [opt_n_samples, opt_C, opt_H // opt_f, opt_W // opt_f]
|
|
|
|
# Send to CPU and wait until complete.
|
|
wait_model_move_to(thread_data.modelCS, 'cpu')
|
|
|
|
if sampler_name == 'ddim':
|
|
thread_data.model.make_schedule(ddim_num_steps=opt_ddim_steps, ddim_eta=opt_ddim_eta, verbose=False)
|
|
|
|
samples_ddim = thread_data.model.sample(
|
|
S=opt_ddim_steps,
|
|
conditioning=c,
|
|
seed=opt_seed,
|
|
shape=shape,
|
|
verbose=False,
|
|
unconditional_guidance_scale=opt_scale,
|
|
unconditional_conditioning=uc,
|
|
eta=opt_ddim_eta,
|
|
x_T=start_code,
|
|
img_callback=img_callback,
|
|
mask=mask,
|
|
sampler = sampler_name,
|
|
)
|
|
yield from samples_ddim
|
|
|
|
def _img2img(init_latent, t_enc, batch_size, opt_scale, c, uc, opt_ddim_steps, opt_ddim_eta, opt_seed, img_callback, mask):
|
|
# encode (scaled latent)
|
|
z_enc = thread_data.model.stochastic_encode(
|
|
init_latent,
|
|
torch.tensor([t_enc] * batch_size).to(thread_data.device),
|
|
opt_seed,
|
|
opt_ddim_eta,
|
|
opt_ddim_steps,
|
|
)
|
|
x_T = None if mask is None else init_latent
|
|
|
|
# decode it
|
|
samples_ddim = thread_data.model.sample(
|
|
t_enc,
|
|
c,
|
|
z_enc,
|
|
unconditional_guidance_scale=opt_scale,
|
|
unconditional_conditioning=uc,
|
|
img_callback=img_callback,
|
|
mask=mask,
|
|
x_T=x_T,
|
|
sampler = 'ddim'
|
|
)
|
|
yield from samples_ddim
|
|
|
|
def gc():
|
|
gc_collect()
|
|
if thread_data.device == 'cpu':
|
|
return
|
|
torch.cuda.empty_cache()
|
|
torch.cuda.ipc_collect()
|
|
|
|
# internal
|
|
|
|
def chunk(it, size):
|
|
it = iter(it)
|
|
return iter(lambda: tuple(islice(it, size)), ())
|
|
|
|
def load_model_from_config(ckpt, verbose=False):
|
|
print(f"Loading model from {ckpt}")
|
|
pl_sd = torch.load(ckpt, map_location="cpu")
|
|
if "global_step" in pl_sd:
|
|
print(f"Global Step: {pl_sd['global_step']}")
|
|
sd = pl_sd["state_dict"]
|
|
return sd
|
|
|
|
# utils
|
|
class UserInitiatedStop(Exception):
|
|
pass
|
|
|
|
def load_img(img_str, w0, h0):
|
|
image = base64_str_to_img(img_str).convert("RGB")
|
|
w, h = image.size
|
|
print(f"loaded input image of size ({w}, {h}) from base64")
|
|
if h0 is not None and w0 is not None:
|
|
h, w = h0, w0
|
|
|
|
w, h = map(lambda x: x - x % 64, (w, h)) # resize to integer multiple of 64
|
|
image = image.resize((w, h), resample=Image.Resampling.LANCZOS)
|
|
image = np.array(image).astype(np.float32) / 255.0
|
|
image = image[None].transpose(0, 3, 1, 2)
|
|
image = torch.from_numpy(image)
|
|
return 2.*image - 1.
|
|
|
|
def load_mask(mask_str, h0, w0, newH, newW, invert=False):
|
|
image = base64_str_to_img(mask_str).convert("RGB")
|
|
w, h = image.size
|
|
print(f"loaded input mask of size ({w}, {h})")
|
|
|
|
if invert:
|
|
print("inverted")
|
|
image = ImageOps.invert(image)
|
|
# where_0, where_1 = np.where(image == 0), np.where(image == 255)
|
|
# image[where_0], image[where_1] = 255, 0
|
|
|
|
if h0 is not None and w0 is not None:
|
|
h, w = h0, w0
|
|
|
|
w, h = map(lambda x: x - x % 64, (w, h)) # resize to integer multiple of 64
|
|
|
|
print(f"New mask size ({w}, {h})")
|
|
image = image.resize((newW, newH), resample=Image.Resampling.LANCZOS)
|
|
image = np.array(image)
|
|
|
|
image = image.astype(np.float32) / 255.0
|
|
image = image[None].transpose(0, 3, 1, 2)
|
|
image = torch.from_numpy(image)
|
|
return image
|
|
|
|
# https://stackoverflow.com/a/61114178
|
|
def img_to_base64_str(img, output_format="PNG"):
|
|
buffered = BytesIO()
|
|
img.save(buffered, format=output_format)
|
|
buffered.seek(0)
|
|
img_byte = buffered.getvalue()
|
|
mime_type = "image/png" if output_format.lower() == "png" else "image/jpeg"
|
|
img_str = f"data:{mime_type};base64," + base64.b64encode(img_byte).decode()
|
|
return img_str
|
|
|
|
def base64_str_to_buffer(img_str):
|
|
mime_type = "image/png" if img_str.startswith("data:image/png;") else "image/jpeg"
|
|
img_str = img_str[len(f"data:{mime_type};base64,"):]
|
|
data = base64.b64decode(img_str)
|
|
buffered = BytesIO(data)
|
|
return buffered
|
|
|
|
def base64_str_to_img(img_str):
|
|
buffered = base64_str_to_buffer(img_str)
|
|
img = Image.open(buffered)
|
|
return img
|