app.py

# TODO save & restart from (if it exists) dataframe parquet
import torch

# lol
DEVICE = 'cuda'
STEPS = 6
output_hidden_state = False
device = "cuda"
dtype = torch.bfloat16

import matplotlib.pyplot as plt
import matplotlib

from sklearn.linear_model import Ridge

import imageio
import gradio as gr
import numpy as np
from sklearn.svm import SVC
from sklearn.inspection import permutation_importance
from sklearn import preprocessing
import pandas as pd
from apscheduler.schedulers.background import BackgroundScheduler

import random
import time
from PIL import Image
from safety_checker_improved import maybe_nsfw


torch.set_grad_enabled(False)
torch.backends.cuda.matmul.allow_tf32 = True
torch.backends.cudnn.allow_tf32 = True

prevs_df = pd.DataFrame(columns=['paths', 'embeddings', 'ips', 'user:rating', 'latest_user_to_rate'])

import spaces
prompt_list = [p for p in list(set(
 pd.read_csv('./twitter_prompts.csv').iloc[:, 1].tolist())) if type(p) == str]

start_time = time.time()

####################### Setup Model
from diffusers import AnimateDiffPipeline, MotionAdapter, EulerDiscreteScheduler, LCMScheduler, AutoencoderTiny, UNet2DConditionModel, AutoencoderKL
from transformers import CLIPTextModel
from huggingface_hub import hf_hub_download
from safetensors.torch import load_file
from PIL import Image
from transformers import CLIPVisionModelWithProjection
import uuid
import av

def write_video(file_name, images, fps=17):
 print('Saving')
 container = av.open(file_name, mode="w")

 stream = container.add_stream("h264", rate=fps)
 # stream.options = {'preset': 'faster'}
 stream.thread_count = 0
 stream.width = 512
 stream.height = 512
 stream.pix_fmt = "yuv420p"

 for img in images:
 img = np.array(img)
 img = np.round(img).astype(np.uint8)
 frame = av.VideoFrame.from_ndarray(img, format="rgb24")
 for packet in stream.encode(frame):
 container.mux(packet)
 # Flush stream
 for packet in stream.encode():
 container.mux(packet)
 # Close the file
 container.close()
 print('Saved')


image_encoder = CLIPVisionModelWithProjection.from_pretrained("h94/IP-Adapter", subfolder="sdxl_models/image_encoder", torch_dtype=dtype).to(DEVICE)
#vae = AutoencoderTiny.from_pretrained("madebyollin/taesd", torch_dtype=dtype)

# vae = ConsistencyDecoderVAE.from_pretrained("openai/consistency-decoder", torch_dtype=dtype)
# vae = compile_unet(vae, config=config)

#finetune_path = '''/home/ryn_mote/Misc/finetune-sd1.5/dreambooth-model best'''''
#unet = UNet2DConditionModel.from_pretrained(finetune_path+'/unet/').to(dtype)
#text_encoder = CLIPTextModel.from_pretrained(finetune_path+'/text_encoder/').to(dtype)


unet = UNet2DConditionModel.from_pretrained('rynmurdock/Sea_Claws', subfolder='unet').to(dtype)
text_encoder = CLIPTextModel.from_pretrained('rynmurdock/Sea_Claws', subfolder='text_encoder').to(dtype)

adapter = MotionAdapter.from_pretrained("wangfuyun/AnimateLCM")
pipe = AnimateDiffPipeline.from_pretrained("runwayml/stable-diffusion-v1-5", motion_adapter=adapter, image_encoder=image_encoder, torch_dtype=dtype, unet=unet, text_encoder=text_encoder)
pipe.scheduler = LCMScheduler.from_config(pipe.scheduler.config, beta_schedule="linear")
pipe.load_lora_weights("wangfuyun/AnimateLCM", weight_name="AnimateLCM_sd15_t2v_lora.safetensors", adapter_name="lcm-lora",)
pipe.set_adapters(["lcm-lora"], [.9])
pipe.fuse_lora()

#pipe = AnimateDiffPipeline.from_pretrained('emilianJR/epiCRealism', torch_dtype=dtype, image_encoder=image_encoder)
#pipe.scheduler = EulerDiscreteScheduler.from_config(pipe.scheduler.config, timestep_spacing="trailing", beta_schedule="linear")
#repo = "ByteDance/AnimateDiff-Lightning"
#ckpt = f"animatediff_lightning_4step_diffusers.safetensors"


pipe.load_ip_adapter("h94/IP-Adapter", subfolder="models", weight_name="ip-adapter_sd15_vit-G.bin", map_location='cpu')
# This IP adapter improves outputs substantially.
pipe.set_ip_adapter_scale(.8)
pipe.unet.fuse_qkv_projections()
#pipe.enable_free_init(method="gaussian", use_fast_sampling=True)

pipe.to(device=DEVICE)
#pipe.unet = torch.compile(pipe.unet)
#pipe.vae = torch.compile(pipe.vae)


#im_embs = torch.zeros(1, 1, 1, 1280, device=DEVICE, dtype=dtype)
#output = pipe(prompt='a person', guidance_scale=0, added_cond_kwargs={}, ip_adapter_image_embeds=[im_embs], num_inference_steps=STEPS)
#leave_im_emb, _ = pipe.encode_image(
# output.frames[0][len(output.frames[0])//2], DEVICE, 1, output_hidden_state
#)
#assert len(output.frames[0]) == 16
#leave_im_emb.detach().to('cpu')


@spaces.GPU()
def generate(in_im_embs):
 in_im_embs = in_im_embs.to('cuda').unsqueeze(0).unsqueeze(0)
 #im_embs = torch.cat((torch.zeros(1, 1280, device=DEVICE, dtype=dtype), in_im_embs), 0)

 output = pipe(prompt='a scene', guidance_scale=0, added_cond_kwargs={}, ip_adapter_image_embeds=[in_im_embs], num_inference_steps=STEPS)

 im_emb, _ = pipe.encode_image(
 output.frames[0][len(output.frames[0])//2], DEVICE, 1, output_hidden_state
 )
 im_emb = im_emb.detach().to('cpu').to(torch.float32)

 nsfw = maybe_nsfw(output.frames[0][len(output.frames[0])//2])
 
 name = str(uuid.uuid4()).replace("-", "")
 path = f"/tmp/{name}.mp4"
 
 if nsfw:
 gr.Warning("NSFW content detected.")
 # TODO could return an automatic dislike of auto dislike on the backend for neither as well; just would need refactoring.
 return None, im_emb
 
 
 output.frames[0] = output.frames[0] + list(reversed(output.frames[0]))

 write_video(path, output.frames[0])
 return path, im_emb


#######################

# TODO add to state instead of shared across all
glob_idx = 0

# TODO
# We can keep a df of media paths, embeddings, and user ratings. 
# We can drop by lowest user ratings to keep enough RAM available when we get too many rows.
# We can continuously update by who is most recently active in the background & server as we go, plucking using "has been seen" and similarity
# to user embeds

def get_user_emb(embs, ys):
 # handle case where every instance of calibration videos is 'Neither' or 'Like' or 'Dislike'
 if len(list(set(ys))) <= 1:
 embs.append(.01*torch.randn(1280))
 embs.append(.01*torch.randn(1280))
 ys.append(0)
 ys.append(1)
 print('Fixing only one feedback class available.\n')
 
 indices = list(range(len(embs)))
 # sample only as many negatives as there are positives
 pos_indices = [i for i in indices if ys[i] == 1]
 neg_indices = [i for i in indices if ys[i] == 0]
 #lower = min(len(pos_indices), len(neg_indices))
 #neg_indices = random.sample(neg_indices, lower)
 #pos_indices = random.sample(pos_indices, lower)
 print(len(neg_indices), len(pos_indices))
 
 
 # we may have just encountered a rare multi-threading diffusers issue (https://github.com/huggingface/diffusers/issues/5749);
 # this ends up adding a rating but losing an embedding, it seems.
 # let's take off a rating if so to continue without indexing errors.
 if len(ys) > len(embs):
 print('ys are longer than embs; popping latest rating')
 ys.pop(-1)
 
 feature_embs = np.array(torch.stack([embs[i].squeeze().to('cpu') for i in indices]).to('cpu'))
 #scaler = preprocessing.StandardScaler().fit(feature_embs)
 #feature_embs = scaler.transform(feature_embs)
 chosen_y = np.array([ys[i] for i in indices])
 
 print('Gathering coefficients')
 #lin_class = Ridge(fit_intercept=False).fit(feature_embs, chosen_y)
 lin_class = SVC(max_iter=50000, kernel='linear', C=.1, class_weight='balanced').fit(feature_embs, chosen_y)
 coef_ = torch.tensor(lin_class.coef_, dtype=torch.double).detach().to('cpu')
 coef_ = coef_ / coef_.abs().max() * 3
 print('Gathered')

 w = 1# if len(embs) % 2 == 0 else 0
 im_emb = w * coef_.to(dtype=dtype)
 return im_emb


def pluck_img(user_id, user_emb):
 print(user_id, 'user_id')
 not_rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) == None for i in prevs_df.iterrows()]]
 rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) != None for i in prevs_df.iterrows()]]
 while len(not_rated_rows) == 0:
 not_rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) == None for i in prevs_df.iterrows()]]
 time.sleep(.01)
 # TODO optimize this lol
 best_sim = -100000
 for i in not_rated_rows.iterrows():
 # TODO sloppy .to but it is 3am.
 sim = torch.cosine_similarity(i[1]['embeddings'].detach().to('cpu'), user_emb.detach().to('cpu'))
 if sim > best_sim:
 best_sim = sim
 best_row = i[1]
 img = best_row['paths']
 return img


def background_next_image():
 global prevs_df
 
 # only let it get N (maybe 3) ahead of the user
 not_rated_rows = prevs_df[[i[1]['user:rating'] == {' ': ' '} for i in prevs_df.iterrows()]]
 rated_rows = prevs_df[[i[1]['user:rating'] != {' ': ' '} for i in prevs_df.iterrows()]]
 while len(not_rated_rows) > 8 or len(rated_rows) < 4:
 not_rated_rows = prevs_df[[i[1]['user:rating'] == {' ': ' '} for i in prevs_df.iterrows()]]
 rated_rows = prevs_df[[i[1]['user:rating'] != {' ': ' '} for i in prevs_df.iterrows()]]
 time.sleep(.01)
 
 print(rated_rows['latest_user_to_rate'])
 latest_user_id = rated_rows.iloc[-1]['latest_user_to_rate']
 rated_rows = prevs_df[[i[1]['user:rating'].get(latest_user_id, None) is not None for i in prevs_df.iterrows()]]
 
 print(latest_user_id)
 embs, ys = pluck_embs_ys(latest_user_id)
 
 user_emb = get_user_emb(embs, ys)
 img, embs = generate(user_emb)
 tmp_df = pd.DataFrame(columns=['paths', 'embeddings', 'ips', 'user:rating', 'latest_user_to_rate'])
 tmp_df['paths'] = [img]
 tmp_df['embeddings'] = [embs]
 tmp_df['user:rating'] = [{' ': ' '}]
 prevs_df = pd.concat((prevs_df, tmp_df))
 # we can free up storage by deleting the image
 if len(prevs_df) > 50:
 oldest_path = prevs_df.iloc[0]['paths']
 if os.path.isfile(oldest_path):
 os.remove(oldest_path)
 else:
 # If it fails, inform the user.
 print("Error: %s file not found" % oldest_path)
 # only keep 50 images & embeddings & ips, then remove oldest
 prevs_df = prevs_df.iloc[1:]
 

def pluck_embs_ys(user_id):
 rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) != None for i in prevs_df.iterrows()]]
 not_rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) == None for i in prevs_df.iterrows()]]
 while len(not_rated_rows) == 0:
 not_rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) == None for i in prevs_df.iterrows()]]
 rated_rows = prevs_df[[i[1]['user:rating'].get(user_id, None) != None for i in prevs_df.iterrows()]]
 time.sleep(.01)
 
 embs = rated_rows['embeddings'].to_list()
 ys = [i[user_id] for i in rated_rows['user:rating'].to_list()]
 print('embs', 'ys', embs, ys)
 return embs, ys

def next_image(calibrate_prompts, user_id):
 global glob_idx
 glob_idx = glob_idx + 1
 
 with torch.no_grad():
 if len(calibrate_prompts) > 0:
 print('######### Calibrating with sample media #########')
 cal_video = calibrate_prompts.pop(0)
 image = prevs_df[prevs_df['paths'] == cal_video]['paths'].to_list()[0]
 
 return image, calibrate_prompts
 else:
 print('######### Roaming #########')
 embs, ys = pluck_embs_ys(user_id)
 user_emb = get_user_emb(embs, ys)
 image = pluck_img(user_id, user_emb)
 return image, calibrate_prompts









def start(_, calibrate_prompts, user_id, request: gr.Request):
 image, calibrate_prompts = next_image(calibrate_prompts, user_id)
 return [
 gr.Button(value='Like (L)', interactive=True), 
 gr.Button(value='Neither (Space)', interactive=True), 
 gr.Button(value='Dislike (A)', interactive=True),
 gr.Button(value='Start', interactive=False),
 image,
 calibrate_prompts
 ]


def choose(img, choice, calibrate_prompts, user_id, request: gr.Request):
 global prevs_df
 
 
 if choice == 'Like (L)':
 choice = 1
 elif choice == 'Neither (Space)':
 img, calibrate_prompts = next_image(calibrate_prompts, user_id)
 return img, calibrate_prompts
 else:
 choice = 0
 
 # if we detected NSFW, leave that area of latent space regardless of how they rated chosen.
 # TODO skip allowing rating & just continue
 if img == None:
 print('NSFW -- choice is disliked')
 choice = 0
 
 # TODO clean up
 old_d = prevs_df.loc[[p.split('/')[-1] in img for p in prevs_df['paths'].to_list()], 'user:rating'][0]
 old_d[user_id] = choice
 prevs_df.loc[[p.split('/')[-1] in img for p in prevs_df['paths'].to_list()], 'user:rating'][0] = old_d
 prevs_df.loc[[p.split('/')[-1] in img for p in prevs_df['paths'].to_list()], 'latest_user_to_rate'] = [user_id]
 print('full_df, prevs_df', prevs_df, prevs_df['latest_user_to_rate'])
 
 img, calibrate_prompts = next_image(calibrate_prompts, user_id)
 return img, calibrate_prompts

css = '''.gradio-container{max-width: 700px !important}
#description{text-align: center}
#description h1, #description h3{display: block}
#description p{margin-top: 0}
.fade-in-out {animation: fadeInOut 3s forwards}
@keyframes fadeInOut {
 0% {
 background: var(--bg-color);
 }
 100% {
 background: var(--button-secondary-background-fill);
 }
}
'''
js_head = '''
<script>
document.addEventListener('keydown', function(event) {
 if (event.key === 'a' || event.key === 'A') {
 // Trigger click on 'dislike' if 'A' is pressed
 document.getElementById('dislike').click();
 } else if (event.key === ' ' || event.keyCode === 32) {
 // Trigger click on 'neither' if Spacebar is pressed
 document.getElementById('neither').click();
 } else if (event.key === 'l' || event.key === 'L') {
 // Trigger click on 'like' if 'L' is pressed
 document.getElementById('like').click();
 }
});
function fadeInOut(button, color) {
 button.style.setProperty('--bg-color', color);
 button.classList.remove('fade-in-out');
 void button.offsetWidth; // This line forces a repaint by accessing a DOM property
 
 button.classList.add('fade-in-out');
 button.addEventListener('animationend', () => {
 button.classList.remove('fade-in-out'); // Reset the animation state
 }, {once: true});
}
document.body.addEventListener('click', function(event) {
 const target = event.target;
 if (target.id === 'dislike') {
 fadeInOut(target, '#ff1717');
 } else if (target.id === 'like') {
 fadeInOut(target, '#006500');
 } else if (target.id === 'neither') {
 fadeInOut(target, '#cccccc');
 }
});

</script>
'''

with gr.Blocks(css=css, head=js_head) as demo:
 gr.Markdown('''# Blue Tigers
### Generative Recommenders for Exporation of Video

Explore the latent space without text prompts based on your preferences. Learn more on [the write-up](https://rynmurdock.github.io/posts/2024/3/generative_recomenders/).
 ''', elem_id="description")
 user_id = gr.State(int(torch.randint(2**6, (1,))[0]))
 calibrate_prompts = gr.State([
 './first.mp4',
 './second.mp4',
 './third.mp4',
 './fourth.mp4',
 './fifth.mp4',
 './sixth.mp4',
 ])
 def l():
 return None

 with gr.Row(elem_id='output-image'):
 img = gr.Video(
 label='Lightning',
 autoplay=True,
 interactive=False,
 height=512,
 width=512,
 include_audio=False,
 elem_id="video_output"
 )
 img.play(l, js='''document.querySelector('[data-testid="Lightning-player"]').loop = true''')
 with gr.Row(equal_height=True):
 b3 = gr.Button(value='Dislike (A)', interactive=False, elem_id="dislike")
 b2 = gr.Button(value='Neither (Space)', interactive=False, elem_id="neither")
 b1 = gr.Button(value='Like (L)', interactive=False, elem_id="like")
 b1.click(
 choose, 
 [img, b1, calibrate_prompts, user_id],
 [img, calibrate_prompts],
 )
 b2.click(
 choose, 
 [img, b2, calibrate_prompts, user_id],
 [img, calibrate_prompts],
 )
 b3.click(
 choose, 
 [img, b3, calibrate_prompts, user_id],
 [img, calibrate_prompts],
 )
 with gr.Row():
 b4 = gr.Button(value='Start')
 b4.click(start,
 [b4, calibrate_prompts, user_id],
 [b1, b2, b3, b4, img, calibrate_prompts]
 )
 with gr.Row():
 html = gr.HTML('''<div style='text-align:center; font-size:20px'>You will calibrate for several videos and then roam. </ div><br><br><br>
<div style='text-align:center; font-size:14px'>Note that while the AnimateLCM model with NSFW filtering is unlikely to produce NSFW images, this may still occur, and users should avoid NSFW content when rating.
</ div>
<br><br>
<div style='text-align:center; font-size:14px'>Thanks to @multimodalart for their contributions to the demo, esp. the interface and @maxbittker for feedback.
</ div>''')

scheduler = BackgroundScheduler()
scheduler.add_job(func=background_next_image, trigger="interval", seconds=1)
scheduler.start()


def encode_space(x):
 im_emb, _ = pipe.encode_image(
 image, 'cpu', 1, output_hidden_state
 )
 return im_emb.detach().to('cpu').to(torch.float32)

# prep our calibration prompts
for im in [
 './first.mp4',
 './second.mp4',
 './third.mp4',
 './fourth.mp4',
 './fifth.mp4',
 './sixth.mp4',
 ]:
 tmp_df = pd.DataFrame(columns=['paths', 'embeddings', 'ips', 'user:rating'])
 tmp_df['paths'] = [im]
 image = list(imageio.imiter(im))
 image = image[len(image)//2]
 im_emb = encode_space(image)

 tmp_df['embeddings'] = [im_emb.detach().to('cpu')]
 tmp_df['user:rating'] = [{' ': ' '}]
 prevs_df = pd.concat((prevs_df, tmp_df))


demo.launch(share=True)