Update scripts/evaluation/funcs.py

scripts/evaluation/funcs.py

@@ -1,240 +1,241 @@
-import os, sys, glob
-import numpy as np
-from collections import OrderedDict
-from decord import VideoReader, cpu
-import cv2
-
-import torch
-import torchvision
-sys.path.insert(1, os.path.join(sys.path[0], '..', '..'))
-from lvdm.models.samplers.ddim import DDIMSampler
-from einops import rearrange
-
-
-def batch_ddim_sampling(model, cond, noise_shape, n_samples=1, ddim_steps=50, ddim_eta=1.0,\
-                        cfg_scale=1.0, hs=None, temporal_cfg_scale=None, **kwargs):
-    ddim_sampler = DDIMSampler(model)
-    uncond_type = model.uncond_type
-    batch_size = noise_shape[0]
-    fs = cond["fs"]
-    del cond["fs"]
-    if noise_shape[-1] == 32:
-        timestep_spacing = "uniform"
-        guidance_rescale = 0.0
-    else:
-        timestep_spacing = "uniform_trailing"
-        guidance_rescale = 0.7
-    ## construct unconditional guidance
-    if cfg_scale != 1.0:
-        if uncond_type == "empty_seq":
-            prompts = batch_size * [""]
-            #prompts = N * T * [""]  ## if is_imgbatch=True
-            uc_emb = model.get_learned_conditioning(prompts)
-        elif uncond_type == "zero_embed":
-            c_emb = cond["c_crossattn"][0] if isinstance(cond, dict) else cond
-            uc_emb = torch.zeros_like(c_emb)
-                
-        ## process image embedding token
-        if hasattr(model, 'embedder'):
-            uc_img = torch.zeros(noise_shape[0],3,224,224).to(model.device)
-            ## img: b c h w >> b l c
-            uc_img = model.embedder(uc_img)
-            uc_img = model.image_proj_model(uc_img)
-            uc_emb = torch.cat([uc_emb, uc_img], dim=1)
-        
-        if isinstance(cond, dict):
-            uc = {key:cond[key] for key in cond.keys()}
-            uc.update({'c_crossattn': [uc_emb]})
-        else:
-            uc = uc_emb
-    else:
-        uc = None
-    
-
-    additional_decode_kwargs = {'ref_context': hs}
-    x_T = None
-    batch_variants = []
-
-    for _ in range(n_samples):
-        if ddim_sampler is not None:
-            kwargs.update({"clean_cond": True})
-            samples, _ = ddim_sampler.sample(S=ddim_steps,
-                                            conditioning=cond,
-                                            batch_size=noise_shape[0],
-                                            shape=noise_shape[1:],
-                                            verbose=False,
-                                            unconditional_guidance_scale=cfg_scale,
-                                            unconditional_conditioning=uc,
-                                            eta=ddim_eta,
-                                            temporal_length=noise_shape[2],
-                                            conditional_guidance_scale_temporal=temporal_cfg_scale,
-                                            x_T=x_T,
-                                            fs=fs,
-                                            timestep_spacing=timestep_spacing,
-                                            guidance_rescale=guidance_rescale,
-                                            **kwargs
-                                            )
-        ## reconstruct from latent to pixel space
-        batch_images = model.decode_first_stage(samples, **additional_decode_kwargs)
-
-        index = list(range(samples.shape[2]))
-        del index[1]
-        del index[-2]
-        samples = samples[:,:,index,:,:]
-        ## reconstruct from latent to pixel space
-        batch_images_middle = model.decode_first_stage(samples, **additional_decode_kwargs)
-        batch_images[:,:,batch_images.shape[2]//2-1:batch_images.shape[2]//2+1] = batch_images_middle[:,:,batch_images.shape[2]//2-2:batch_images.shape[2]//2]
-
-
-
-        batch_variants.append(batch_images)
-    ## batch, <samples>, c, t, h, w
-    batch_variants = torch.stack(batch_variants, dim=1)
-    return batch_variants
-
-
-def get_filelist(data_dir, ext='*'):
-    file_list = glob.glob(os.path.join(data_dir, '*.%s'%ext))
-    file_list.sort()
-    return file_list
-
-def get_dirlist(path):
-    list = []
-    if (os.path.exists(path)):
-        files = os.listdir(path)
-        for file in files:
-            m = os.path.join(path,file)
-            if (os.path.isdir(m)):
-                list.append(m)
-    list.sort()
-    return list
-
-
-def load_model_checkpoint(model, ckpt):
-    def load_checkpoint(model, ckpt, full_strict):
-        state_dict = torch.load(ckpt, map_location="cpu")
-        if "state_dict" in list(state_dict.keys()):
-            state_dict = state_dict["state_dict"]
-            try:
-                model.load_state_dict(state_dict, strict=full_strict)
-            except:
-                ## rename the keys for 256x256 model
-                new_pl_sd = OrderedDict()
-                for k,v in state_dict.items():
-                    new_pl_sd[k] = v
-
-                for k in list(new_pl_sd.keys()):
-                    if "framestride_embed" in k:
-                        new_key = k.replace("framestride_embed", "fps_embedding")
-                        new_pl_sd[new_key] = new_pl_sd[k]
-                        del new_pl_sd[k]
-                model.load_state_dict(new_pl_sd, strict=full_strict)
-        else:
-            ## deepspeed
-            new_pl_sd = OrderedDict()
-            for key in state_dict['module'].keys():
-                new_pl_sd[key[16:]]=state_dict['module'][key]
-            model.load_state_dict(new_pl_sd, strict=full_strict)
-
-        return model
-    load_checkpoint(model, ckpt, full_strict=True)
-    print('>>> model checkpoint loaded.')
-    return model
-
-
-def load_prompts(prompt_file):
-    f = open(prompt_file, 'r')
-    prompt_list = []
-    for idx, line in enumerate(f.readlines()):
-        l = line.strip()
-        if len(l) != 0:
-            prompt_list.append(l)
-        f.close()
-    return prompt_list
-
-
-def load_video_batch(filepath_list, frame_stride, video_size=(256,256), video_frames=16):
-    '''
-    Notice about some special cases:
-    1. video_frames=-1 means to take all the frames (with fs=1)
-    2. when the total video frames is less than required, padding strategy will be used (repeated last frame)
-    '''
-    fps_list = []
-    batch_tensor = []
-    assert frame_stride > 0, "valid frame stride should be a positive interge!"
-    for filepath in filepath_list:
-        padding_num = 0
-        vidreader = VideoReader(filepath, ctx=cpu(0), width=video_size[1], height=video_size[0])
-        fps = vidreader.get_avg_fps()
-        total_frames = len(vidreader)
-        max_valid_frames = (total_frames-1) // frame_stride + 1
-        if video_frames < 0:
-            ## all frames are collected: fs=1 is a must
-            required_frames = total_frames
-            frame_stride = 1
-        else:
-            required_frames = video_frames
-        query_frames = min(required_frames, max_valid_frames)
-        frame_indices = [frame_stride*i for i in range(query_frames)]
-
-        ## [t,h,w,c] -> [c,t,h,w]
-        frames = vidreader.get_batch(frame_indices)
-        frame_tensor = torch.tensor(frames.asnumpy()).permute(3, 0, 1, 2).float()
-        frame_tensor = (frame_tensor / 255. - 0.5) * 2
-        if max_valid_frames < required_frames:
-            padding_num = required_frames - max_valid_frames
-            frame_tensor = torch.cat([frame_tensor, *([frame_tensor[:,-1:,:,:]]*padding_num)], dim=1)
-            print(f'{os.path.split(filepath)[1]} is not long enough: {padding_num} frames padded.')
-        batch_tensor.append(frame_tensor)
-        sample_fps = int(fps/frame_stride)
-        fps_list.append(sample_fps)
-    
-    return torch.stack(batch_tensor, dim=0)
-
-from PIL import Image
-def load_image_batch(filepath_list, image_size=(256,256)):
-    batch_tensor = []
-    for filepath in filepath_list:
-        _, filename = os.path.split(filepath)
-        _, ext = os.path.splitext(filename)
-        if ext == '.mp4':
-            vidreader = VideoReader(filepath, ctx=cpu(0), width=image_size[1], height=image_size[0])
-            frame = vidreader.get_batch([0])
-            img_tensor = torch.tensor(frame.asnumpy()).squeeze(0).permute(2, 0, 1).float()
-        elif ext == '.png' or ext == '.jpg':
-            img = Image.open(filepath).convert("RGB")
-            rgb_img = np.array(img, np.float32)
-            #bgr_img = cv2.imread(filepath, cv2.IMREAD_COLOR)
-            #bgr_img = cv2.cvtColor(bgr_img, cv2.COLOR_BGR2RGB)
-            rgb_img = cv2.resize(rgb_img, (image_size[1],image_size[0]), interpolation=cv2.INTER_LINEAR)
-            img_tensor = torch.from_numpy(rgb_img).permute(2, 0, 1).float()
-        else:
-            print(f'ERROR: <{ext}> image loading only support format: [mp4], [png], [jpg]')
-            raise NotImplementedError
-        img_tensor = (img_tensor / 255. - 0.5) * 2
-        batch_tensor.append(img_tensor)
-    return torch.stack(batch_tensor, dim=0)
-
-
-def save_videos(batch_tensors, savedir, filenames, fps=10):
-    # b,samples,c,t,h,w
-    n_samples = batch_tensors.shape[1]
-    for idx, vid_tensor in enumerate(batch_tensors):
-        video = vid_tensor.detach().cpu()
-        video = torch.clamp(video.float(), -1., 1.)
-        video = video.permute(2, 0, 1, 3, 4) # t,n,c,h,w
-        frame_grids = [torchvision.utils.make_grid(framesheet, nrow=int(n_samples)) for framesheet in video] #[3, 1*h, n*w]
-        grid = torch.stack(frame_grids, dim=0) # stack in temporal dim [t, 3, n*h, w]
-        grid = (grid + 1.0) / 2.0
-        grid = (grid * 255).to(torch.uint8).permute(0, 2, 3, 1)
-        savepath = os.path.join(savedir, f"{filenames[idx]}.mp4")
-        torchvision.io.write_video(savepath, grid, fps=fps, video_codec='h264', options={'crf': '10'})
-
-
-def get_latent_z(model, videos):
-    b, c, t, h, w = videos.shape
-    x = rearrange(videos, 'b c t h w -> (b t) c h w')
-    z = model.encode_first_stage(x)
-    z = rearrange(z, '(b t) c h w -> b c t h w', b=b, t=t)
-    return z
-
+import os, sys, glob
+import numpy as np
+from collections import OrderedDict
+from decord import VideoReader, cpu
+import cv2
+
+import torch
+import torchvision
+sys.path.insert(1, os.path.join(sys.path[0], '..', '..'))
+from lvdm.models.samplers.ddim import DDIMSampler
+from einops import rearrange
+
+
+def batch_ddim_sampling(model, cond, noise_shape, n_samples=1, ddim_steps=50, ddim_eta=1.0,\
+                        cfg_scale=1.0, hs=None, temporal_cfg_scale=None, **kwargs):
+    ddim_sampler = DDIMSampler(model)
+    uncond_type = model.uncond_type
+    batch_size = noise_shape[0]
+    fs = cond["fs"]
+    del cond["fs"]
+    if noise_shape[-1] == 32:
+        timestep_spacing = "uniform"
+        guidance_rescale = 0.0
+    else:
+        timestep_spacing = "uniform_trailing"
+        guidance_rescale = 0.7
+    ## construct unconditional guidance
+    if cfg_scale != 1.0:
+        if uncond_type == "empty_seq":
+            prompts = batch_size * [""]
+            #prompts = N * T * [""]  ## if is_imgbatch=True
+            uc_emb = model.get_learned_conditioning(prompts)
+        elif uncond_type == "zero_embed":
+            c_emb = cond["c_crossattn"][0] if isinstance(cond, dict) else cond
+            uc_emb = torch.zeros_like(c_emb)
+                
+        ## process image embedding token
+        if hasattr(model, 'embedder'):
+            uc_img = torch.zeros(noise_shape[0],3,224,224).to(model.device)
+            ## img: b c h w >> b l c
+            uc_img = model.embedder(uc_img)
+            uc_img = model.image_proj_model(uc_img)
+            uc_emb = torch.cat([uc_emb, uc_img], dim=1)
+        
+        if isinstance(cond, dict):
+            uc = {key:cond[key] for key in cond.keys()}
+            uc.update({'c_crossattn': [uc_emb]})
+        else:
+            uc = uc_emb
+    else:
+        uc = None
+    
+
+    additional_decode_kwargs = {'ref_context': hs}
+    x_T = None
+    batch_variants = []
+
+    for _ in range(n_samples):
+        if ddim_sampler is not None:
+            kwargs.update({"clean_cond": True})
+            samples, _ = ddim_sampler.sample(S=ddim_steps,
+                                            conditioning=cond,
+                                            batch_size=noise_shape[0],
+                                            shape=noise_shape[1:],
+                                            verbose=False,
+                                            unconditional_guidance_scale=cfg_scale,
+                                            unconditional_conditioning=uc,
+                                            eta=ddim_eta,
+                                            temporal_length=noise_shape[2],
+                                            conditional_guidance_scale_temporal=temporal_cfg_scale,
+                                            x_T=x_T,
+                                            fs=fs,
+                                            timestep_spacing=timestep_spacing,
+                                            guidance_rescale=guidance_rescale,
+                                            **kwargs
+                                            )
+        ## reconstruct from latent to pixel space
+        batch_images = model.decode_first_stage(samples, **additional_decode_kwargs)
+
+        index = list(range(samples.shape[2]))
+        del index[1]
+        del index[-2]
+        samples = samples[:,:,index,:,:]
+        ## reconstruct from latent to pixel space
+        batch_images_middle = model.decode_first_stage(samples, **additional_decode_kwargs)
+        batch_images[:,:,batch_images.shape[2]//2-1:batch_images.shape[2]//2+1] = batch_images_middle[:,:,batch_images.shape[2]//2-2:batch_images.shape[2]//2]
+
+
+
+        batch_variants.append(batch_images)
+    ## batch, <samples>, c, t, h, w
+    batch_variants = torch.stack(batch_variants, dim=1)
+    return batch_variants
+
+
+def get_filelist(data_dir, ext='*'):
+    file_list = glob.glob(os.path.join(data_dir, '*.%s'%ext))
+    file_list.sort()
+    return file_list
+
+def get_dirlist(path):
+    list = []
+    if (os.path.exists(path)):
+        files = os.listdir(path)
+        for file in files:
+            m = os.path.join(path,file)
+            if (os.path.isdir(m)):
+                list.append(m)
+    list.sort()
+    return list
+
+
+def load_model_checkpoint(model, ckpt):
+    def load_checkpoint(model, ckpt, full_strict):
+        state_dict = torch.load(ckpt, map_location="cpu")
+        if "state_dict" in list(state_dict.keys()):
+            state_dict = state_dict["state_dict"]
+            try:
+                model.load_state_dict(state_dict, strict=full_strict)
+            except:
+                ## rename the keys for 256x256 model
+                new_pl_sd = OrderedDict()
+                for k,v in state_dict.items():
+                    new_pl_sd[k] = v
+
+                for k in list(new_pl_sd.keys()):
+                    if "framestride_embed" in k:
+                        new_key = k.replace("framestride_embed", "fps_embedding")
+                        new_pl_sd[new_key] = new_pl_sd[k]
+                        del new_pl_sd[k]
+                model.load_state_dict(new_pl_sd, strict=full_strict)
+        else:
+            ## deepspeed
+            new_pl_sd = OrderedDict()
+            for key in state_dict['module'].keys():
+                new_pl_sd[key[16:]]=state_dict['module'][key]
+            model.load_state_dict(new_pl_sd, strict=full_strict)
+
+        return model
+    load_checkpoint(model, ckpt, full_strict=True)
+    print('>>> model checkpoint loaded.')
+    return model
+
+
+def load_prompts(prompt_file):
+    f = open(prompt_file, 'r')
+    prompt_list = []
+    for idx, line in enumerate(f.readlines()):
+        l = line.strip()
+        if len(l) != 0:
+            prompt_list.append(l)
+        f.close()
+    return prompt_list
+
+
+def load_video_batch(filepath_list, frame_stride, video_size=(256,256), video_frames=16):
+    '''
+    Notice about some special cases:
+    1. video_frames=-1 means to take all the frames (with fs=1)
+    2. when the total video frames is less than required, padding strategy will be used (repeated last frame)
+    '''
+    fps_list = []
+    batch_tensor = []
+    assert frame_stride > 0, "valid frame stride should be a positive interge!"
+    for filepath in filepath_list:
+        padding_num = 0
+        vidreader = VideoReader(filepath, ctx=cpu(0), width=video_size[1], height=video_size[0])
+        fps = vidreader.get_avg_fps()
+        total_frames = len(vidreader)
+        max_valid_frames = (total_frames-1) // frame_stride + 1
+        if video_frames < 0:
+            ## all frames are collected: fs=1 is a must
+            required_frames = total_frames
+            frame_stride = 1
+        else:
+            required_frames = video_frames
+        query_frames = min(required_frames, max_valid_frames)
+        frame_indices = [frame_stride*i for i in range(query_frames)]
+
+        ## [t,h,w,c] -> [c,t,h,w]
+        frames = vidreader.get_batch(frame_indices)
+        frame_tensor = torch.tensor(frames.asnumpy()).permute(3, 0, 1, 2).float()
+        frame_tensor = (frame_tensor / 255. - 0.5) * 2
+        if max_valid_frames < required_frames:
+            padding_num = required_frames - max_valid_frames
+            frame_tensor = torch.cat([frame_tensor, *([frame_tensor[:,-1:,:,:]]*padding_num)], dim=1)
+            print(f'{os.path.split(filepath)[1]} is not long enough: {padding_num} frames padded.')
+        batch_tensor.append(frame_tensor)
+        sample_fps = int(fps/frame_stride)
+        fps_list.append(sample_fps)
+    
+    return torch.stack(batch_tensor, dim=0)
+
+from PIL import Image
+def load_image_batch(filepath_list, image_size=(256,256)):
+    batch_tensor = []
+    for filepath in filepath_list:
+        _, filename = os.path.split(filepath)
+        _, ext = os.path.splitext(filename)
+        if ext == '.mp4':
+            vidreader = VideoReader(filepath, ctx=cpu(0), width=image_size[1], height=image_size[0])
+            frame = vidreader.get_batch([0])
+            img_tensor = torch.tensor(frame.asnumpy()).squeeze(0).permute(2, 0, 1).float()
+        elif ext == '.png' or ext == '.jpg':
+            img = Image.open(filepath).convert("RGB")
+            rgb_img = np.array(img, np.float32)
+            #bgr_img = cv2.imread(filepath, cv2.IMREAD_COLOR)
+            #bgr_img = cv2.cvtColor(bgr_img, cv2.COLOR_BGR2RGB)
+            rgb_img = cv2.resize(rgb_img, (image_size[1],image_size[0]), interpolation=cv2.INTER_LINEAR)
+            img_tensor = torch.from_numpy(rgb_img).permute(2, 0, 1).float()
+        else:
+            print(f'ERROR: <{ext}> image loading only support format: [mp4], [png], [jpg]')
+            raise NotImplementedError
+        img_tensor = (img_tensor / 255. - 0.5) * 2
+        batch_tensor.append(img_tensor)
+    return torch.stack(batch_tensor, dim=0)
+
+
+def save_videos(batch_tensors, savedir, filenames, fps=10):
+    # b,samples,c,t,h,w
+    n_samples = batch_tensors.shape[1]
+    for idx, vid_tensor in enumerate(batch_tensors):
+        video = vid_tensor.detach().cpu()
+        video = torch.clamp(video.float(), -1., 1.)
+        video = video.permute(2, 0, 1, 3, 4) # t,n,c,h,w
+        frame_grids = [torchvision.utils.make_grid(framesheet, nrow=int(n_samples)) for framesheet in video] #[3, 1*h, n*w]
+        grid = torch.stack(frame_grids, dim=0) # stack in temporal dim [t, 3, n*h, w]
+        grid = (grid + 1.0) / 2.0
+        grid = (grid * 255).to(torch.uint8).permute(0, 2, 3, 1)
+        savepath = os.path.join(savedir, f"{filenames[idx]}.mp4")
+        print("saving path:", savepath)
+        torchvision.io.write_video(savepath, grid, fps=fps, video_codec='h264', options={'crf': '10'})
+
+
+def get_latent_z(model, videos):
+    b, c, t, h, w = videos.shape
+    x = rearrange(videos, 'b c t h w -> (b t) c h w')
+    z = model.encode_first_stage(x)
+    z = rearrange(z, '(b t) c h w -> b c t h w', b=b, t=t)
+    return z
+