import torch from diffusers.loaders import AttnProcsLayers from transformers import CLIPTextModel, CLIPTokenizer from modules.beats.BEATs import BEATs, BEATsConfig from modules.AudioToken.embedder import FGAEmbedder from diffusers import AutoencoderKL, UNet2DConditionModel from diffusers.models.attention_processor import LoRAAttnProcessor from diffusers import StableDiffusionPipeline import numpy as np import gradio as gr class AudioTokenWrapper(torch.nn.Module): """Simple wrapper module for Stable Diffusion that holds all the models together""" def __init__( self, lora, device, ): super().__init__() # Load scheduler and models self.tokenizer = CLIPTokenizer.from_pretrained( "CompVis/stable-diffusion-v1-4", subfolder="tokenizer" ) self.text_encoder = CLIPTextModel.from_pretrained( "CompVis/stable-diffusion-v1-4", subfolder="text_encoder", revision=None ) self.unet = UNet2DConditionModel.from_pretrained( "CompVis/stable-diffusion-v1-4", subfolder="unet", revision=None ) self.vae = AutoencoderKL.from_pretrained( "CompVis/stable-diffusion-v1-4", subfolder="vae", revision=None ) checkpoint = torch.load( 'models/BEATs_iter3_plus_AS2M_finetuned_on_AS2M_cpt2.pt') cfg = BEATsConfig(checkpoint['cfg']) self.aud_encoder = BEATs(cfg) self.aud_encoder.load_state_dict(checkpoint['model']) self.aud_encoder.predictor = None input_size = 768 * 3 self.embedder = FGAEmbedder(input_size=input_size, output_size=768) self.vae.eval() self.unet.eval() self.text_encoder.eval() self.aud_encoder.eval() if lora: # Set correct lora layers lora_attn_procs = {} for name in self.unet.attn_processors.keys(): cross_attention_dim = None if name.endswith( "attn1.processor") else self.unet.config.cross_attention_dim if name.startswith("mid_block"): hidden_size = self.unet.config.block_out_channels[-1] elif name.startswith("up_blocks"): block_id = int(name[len("up_blocks.")]) hidden_size = list(reversed(self.unet.config.block_out_channels))[block_id] elif name.startswith("down_blocks"): block_id = int(name[len("down_blocks.")]) hidden_size = self.unet.config.block_out_channels[block_id] lora_attn_procs[name] = LoRAAttnProcessor(hidden_size=hidden_size, cross_attention_dim=cross_attention_dim) self.unet.set_attn_processor(lora_attn_procs) self.lora_layers = AttnProcsLayers(self.unet.attn_processors) self.lora_layers.eval() lora_layers_learned_embeds = 'models/lora_layers_learned_embeds.bin' self.lora_layers.load_state_dict(torch.load(lora_layers_learned_embeds, map_location=device)) self.unet.load_attn_procs(lora_layers_learned_embeds) self.embedder.eval() embedder_learned_embeds = 'models/embedder_learned_embeds.bin' self.embedder.load_state_dict(torch.load(embedder_learned_embeds, map_location=device)) self.placeholder_token = '<*>' num_added_tokens = self.tokenizer.add_tokens(self.placeholder_token) if num_added_tokens == 0: raise ValueError( f"The tokenizer already contains the token {self.placeholder_token}. Please pass a different" " `placeholder_token` that is not already in the tokenizer." ) self.placeholder_token_id = self.tokenizer.convert_tokens_to_ids(self.placeholder_token) # Resize the token embeddings as we are adding new special tokens to the tokenizer self.text_encoder.resize_token_embeddings(len(self.tokenizer)) def greet(audio): audio = audio[-1].astype(np.float32, order='C') / 32768.0 weight_dtype = torch.float32 prompt = 'a photo of <*>' audio_values = torch.unsqueeze(torch.tensor(audio), dim=0).to(device).to(dtype=weight_dtype) aud_features = model.aud_encoder.extract_features(audio_values)[1] audio_token = model.embedder(aud_features) token_embeds = model.text_encoder.get_input_embeddings().weight.data token_embeds[model.placeholder_token_id] = audio_token.clone() pipeline = StableDiffusionPipeline.from_pretrained( "CompVis/stable-diffusion-v1-4", tokenizer=model.tokenizer, text_encoder=model.text_encoder, vae=model.vae, unet=model.unet, ).to(device) image = pipeline(prompt, num_inference_steps=30, guidance_scale=7.5).images[0] return image if __name__ == "__main__": lora = True device = torch.device("cuda:0" if torch.cuda.is_available() else "cpu") model = AudioTokenWrapper(lora, device) description = """
This is a demo of AudioToken: Adaptation of Text-Conditioned Diffusion Models for Audio-to-Image Generation.
A novel method utilizing latent diffusion models trained for text-to-image-generation to generate images conditioned on audio recordings. Using a pre-trained audio encoding model, the proposed method encodes audio into a new token, which can be considered as an adaptation layer between the audio and text representations.
For more information, please see the original paper and repo.