import argparse, os, sys, glob, yaml, math, random import datetime, time import numpy as np from omegaconf import OmegaConf from collections import OrderedDict from tqdm import trange, tqdm from einops import repeat from einops import rearrange, repeat from functools import partial import torch from pytorch_lightning import seed_everything from funcs import load_model_checkpoint, load_prompts, load_image_batch, get_filelist, save_videos from funcs import batch_ddim_sampling from utils.utils import instantiate_from_config def get_parser(): parser = argparse.ArgumentParser() parser.add_argument("--seed", type=int, default=20230211, help="seed for seed_everything") parser.add_argument("--mode", default="base", type=str, help="which kind of inference mode: {'base', 'i2v'}") parser.add_argument("--ckpt_path", type=str, default=None, help="checkpoint path") parser.add_argument("--config", type=str, help="config (yaml) path") parser.add_argument("--prompt_file", type=str, default=None, help="a text file containing many prompts") parser.add_argument("--savedir", type=str, default=None, help="results saving path") parser.add_argument("--savefps", type=str, default=10, help="video fps to generate") parser.add_argument("--n_samples", type=int, default=1, help="num of samples per prompt",) parser.add_argument("--ddim_steps", type=int, default=50, help="steps of ddim if positive, otherwise use DDPM",) parser.add_argument("--ddim_eta", type=float, default=1.0, help="eta for ddim sampling (0.0 yields deterministic sampling)",) parser.add_argument("--bs", type=int, default=1, help="batch size for inference") parser.add_argument("--height", type=int, default=512, help="image height, in pixel space") parser.add_argument("--width", type=int, default=512, help="image width, in pixel space") parser.add_argument("--frames", type=int, default=-1, help="frames num to inference") parser.add_argument("--fps", type=int, default=24) parser.add_argument("--unconditional_guidance_scale", type=float, default=1.0, help="prompt classifier-free guidance") parser.add_argument("--unconditional_guidance_scale_temporal", type=float, default=None, help="temporal consistency guidance") ## for conditional i2v only parser.add_argument("--cond_input", type=str, default=None, help="data dir of conditional input") return parser def run_inference(args, gpu_num, gpu_no, **kwargs): ## step 1: model config ## ----------------------------------------------------------------- config = OmegaConf.load(args.config) #data_config = config.pop("data", OmegaConf.create()) model_config = config.pop("model", OmegaConf.create()) model = instantiate_from_config(model_config) model = model.cuda(gpu_no) assert os.path.exists(args.ckpt_path), f"Error: checkpoint [{args.ckpt_path}] Not Found!" model = load_model_checkpoint(model, args.ckpt_path) model.eval() ## sample shape assert (args.height % 16 == 0) and (args.width % 16 == 0), "Error: image size [h,w] should be multiples of 16!" ## latent noise shape h, w = args.height // 8, args.width // 8 frames = model.temporal_length if args.frames < 0 else args.frames channels = model.channels ## saving folders os.makedirs(args.savedir, exist_ok=True) ## step 2: load data ## ----------------------------------------------------------------- assert os.path.exists(args.prompt_file), "Error: prompt file NOT Found!" prompt_list = load_prompts(args.prompt_file) num_samples = len(prompt_list) filename_list = [f"{id+1:04d}" for id in range(num_samples)] samples_split = num_samples // gpu_num residual_tail = num_samples % gpu_num print(f'[rank:{gpu_no}] {samples_split}/{num_samples} samples loaded.') indices = list(range(samples_split*gpu_no, samples_split*(gpu_no+1))) if gpu_no == 0 and residual_tail != 0: indices = indices + list(range(num_samples-residual_tail, num_samples)) prompt_list_rank = [prompt_list[i] for i in indices] ## conditional input if args.mode == "i2v": ## each video or frames dir per prompt cond_inputs = get_filelist(args.cond_input, ext='[mpj][pn][4gj]') # '[mpj][pn][4gj]' assert len(cond_inputs) == num_samples, f"Error: conditional input ({len(cond_inputs)}) NOT match prompt ({num_samples})!" filename_list = [f"{os.path.split(cond_inputs[id])[-1][:-4]}" for id in range(num_samples)] cond_inputs_rank = [cond_inputs[i] for i in indices] filename_list_rank = [filename_list[i] for i in indices] ## step 3: run over samples ## ----------------------------------------------------------------- start = time.time() n_rounds = len(prompt_list_rank) // args.bs n_rounds = n_rounds+1 if len(prompt_list_rank) % args.bs != 0 else n_rounds for idx in range(0, n_rounds): print(f'[rank:{gpu_no}] batch-{idx+1} ({args.bs})x{args.n_samples} ...') idx_s = idx*args.bs idx_e = min(idx_s+args.bs, len(prompt_list_rank)) batch_size = idx_e - idx_s filenames = filename_list_rank[idx_s:idx_e] noise_shape = [batch_size, channels, frames, h, w] fps = torch.tensor([args.fps]*batch_size).to(model.device).long() prompts = prompt_list_rank[idx_s:idx_e] if isinstance(prompts, str): prompts = [prompts] #prompts = batch_size * [""] text_emb = model.get_learned_conditioning(prompts) if args.mode == 'base': cond = {"c_crossattn": [text_emb], "fps": fps} elif args.mode == 'i2v': #cond_images = torch.zeros(noise_shape[0],3,224,224).to(model.device) cond_images = load_image_batch(cond_inputs_rank[idx_s:idx_e], (args.height, args.width)) cond_images = cond_images.to(model.device) img_emb = model.get_image_embeds(cond_images) imtext_cond = torch.cat([text_emb, img_emb], dim=1) cond = {"c_crossattn": [imtext_cond], "fps": fps} else: raise NotImplementedError ## inference batch_samples = batch_ddim_sampling(model, cond, noise_shape, args.n_samples, \ args.ddim_steps, args.ddim_eta, args.unconditional_guidance_scale, **kwargs) ## b,samples,c,t,h,w save_videos(batch_samples, args.savedir, filenames, fps=args.savefps) print(f"Saved in {args.savedir}. Time used: {(time.time() - start):.2f} seconds") if __name__ == '__main__': now = datetime.datetime.now().strftime("%Y-%m-%d-%H-%M-%S") print("@CoLVDM Inference: %s"%now) parser = get_parser() args = parser.parse_args() seed_everything(args.seed) rank, gpu_num = 0, 1 run_inference(args, gpu_num, rank)