PicoAudio / app.py
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Update app.py
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import spaces
import os
import json
import numpy as np
import torch
import soundfile as sf
import gradio as gr
from diffusers import DDPMScheduler
from pico_model import PicoDiffusion
from audioldm.variational_autoencoder.autoencoder import AutoencoderKL
from llm_preprocess import get_event, preprocess_gemini, preprocess_gpt
class dotdict(dict):
"""dot.notation access to dictionary attributes"""
__getattr__ = dict.get
__setattr__ = dict.__setitem__
__delattr__ = dict.__delitem__
class InferRunner:
def __init__(self, device):
vae_config = json.load(open("ckpts/ldm/vae_config.json"))
self.vae = AutoencoderKL(**vae_config)
vae_weights = torch.load("ckpts/ldm/pytorch_model_vae.bin", map_location="cpu")
self.vae.load_state_dict(vae_weights)
self.vae = self.vae.to(device)
train_args = dotdict(json.loads(open("ckpts/pico_model/summary.jsonl").readlines()[0]))
self.pico_model = PicoDiffusion(
scheduler_name=train_args.scheduler_name,
unet_model_config_path=train_args.unet_model_config,
snr_gamma=train_args.snr_gamma,
freeze_text_encoder_ckpt="ckpts/laion_clap/630k-audioset-best.pt",
diffusion_pt="ckpts/pico_model/diffusion.pt",
).eval().to(device)
self.scheduler = DDPMScheduler.from_pretrained(train_args.scheduler_name, subfolder="scheduler")
#device = "cuda" if torch.cuda.is_available() else "cpu"
device = "cuda"
runner = InferRunner(device)
event_list = get_event()
@spaces.GPU(duration=240)
def infer(caption, num_steps=200, guidance_scale=3.0, audio_len=16000*10):
with torch.no_grad():
latents = runner.pico_model.demo_inference(caption, runner.scheduler, num_steps=num_steps, guidance_scale=guidance_scale, num_samples_per_prompt=1, disable_progress=True)
mel = runner.vae.decode_first_stage(latents)
wave = runner.vae.decode_to_waveform(mel)[0][:audio_len]
outpath = f"output.wav"
sf.write(outpath, wave, samplerate=16000, subtype='PCM_16')
return outpath
def preprocess(caption):
output = preprocess_gemini(caption)
return output, output
def update_textbox(event_name, current_text):
event = event_name + ' two times.'
if current_text:
return current_text.strip('.') + ' then ' + event
else:
return event
with gr.Blocks() as demo:
with gr.Row():
gr.Markdown("## PicoAudio")
with gr.Row():
gr.Markdown("""
[![arXiv](https://img.shields.io/badge/arXiv-2407.02869v2-brightgreen.svg?style=flat-square)](https://arxiv.org/abs/2407.02869v2)
[![githubio](https://img.shields.io/badge/GitHub.io-Audio_Samples-blue?logo=Github&style=flat-square)](https://zeyuxie29.github.io/PicoAudio.github.io/)
[![github](https://img.shields.io/badge/GitHub-Code-blue?logo=Github&style=flat-square)](https://github.com/zeyuxie29/PicoAudio)
[![Hugging Face data](https://img.shields.io/badge/%F0%9F%A4%97%20Hugging%20Face-Dataset-blue)](https://huggingface.co/datasets/ZeyuXie/PicoAudio/tree/main)
""")
with gr.Row():
description_text = f"18 events supported:"
gr.Markdown(description_text)
btn_event = []
with gr.Row():
for i in range(6):
event_name = f"{event_list[i]}"
btn_event.append(gr.Button(event_name))
with gr.Row():
for i in range(6, 12):
event_name = f"{event_list[i]}"
btn_event.append(gr.Button(event_name))
with gr.Row():
for i in range(12, 18):
event_name = f"{event_list[i]}"
btn_event.append(gr.Button(event_name))
with gr.Row():
gr.Markdown("## Step1-Preprocess")
with gr.Row():
preprocess_description_text = f"Transfer free-text into timestamp caption via LLM. "+\
"This demo uses Gemini as the preprocessor. If any errors occur, please try a few more times. "+\
"We also provide the GPT version consistent with the paper in the file 'Files/llm_reprocessing.py'. You can use your own api_key to modify and run 'Files/inference.py' for local inference."
gr.Markdown(preprocess_description_text)
with gr.Row():
with gr.Column():
freetext_prompt = gr.Textbox(label="Free-text Prompt: Input your free-text caption here. (e.g. a dog barks three times.)",
value="a dog barks three times.",)
with gr.Row():
preprocess_run_button = gr.Button()
preprocess_run_clear = gr.ClearButton([freetext_prompt])
prompt = None
with gr.Column():
freetext_prompt_out = gr.Textbox(label="Timestamp Caption: Preprocess output")
with gr.Row():
with gr.Column():
gr.Examples(
examples = [["spraying two times then gunshot three times."],
["a dog barks three times."],
["cow mooing two times."],],
inputs = [freetext_prompt],
outputs = [prompt]
)
with gr.Column():
pass
with gr.Row():
gr.Markdown("## Step2-Generate")
with gr.Row():
generate_description_text = f"Generate audio based on timestamp caption."
gr.Markdown(generate_description_text)
with gr.Row():
with gr.Column():
prompt = gr.Textbox(label="Timestamp Caption: Specify your timestamp caption formatted as 'event1 at onset1-offset1_onset2-offset2 and event2 at onset1-offset1'.",
value="spraying at 0.38-1.176_3.06-3.856 and gunshot at 1.729-3.729_4.367-6.367_7.031-9.031.",)
with gr.Row():
generate_run_button = gr.Button()
generate_run_clear = gr.ClearButton([prompt])
with gr.Accordion("Advanced options", open=False):
num_steps = gr.Slider(label="num_steps", minimum=1, maximum=300, value=200, step=1)
guidance_scale = gr.Slider(label="guidance_scale", minimum=0.1, maximum=8.0, value=3.0, step=0.1)
with gr.Column():
outaudio = gr.Audio()
for i in range(18):
event_name = f"{event_list[i]}"
btn_event[i].click(fn=update_textbox, inputs=[gr.State(event_name), freetext_prompt], outputs=freetext_prompt)
preprocess_run_button.click(fn=preprocess, inputs=[freetext_prompt], outputs=[prompt, freetext_prompt_out])
generate_run_button.click(fn=infer, inputs=[prompt, num_steps, guidance_scale], outputs=[outaudio])
with gr.Row():
with gr.Column():
gr.Examples(
examples = [["spraying at 0.38-1.176_3.06-3.856 and gunshot at 1.729-3.729_4.367-6.367_7.031-9.031."],
["dog_barking at 0.562-2.562_4.25-6.25."],
["cow_mooing at 0.958-3.582_5.272-7.896."],
["tapping_clicking_clanking at 0.579-4.019_5.882-9.322"],
["duck_quacking at 1.51-2.51_4.904-5.904"],
],
inputs = [prompt, num_steps, guidance_scale],
outputs = [outaudio]
)
with gr.Column():
pass
demo.launch()
# description_text = f"18 events: {', '.join(event_list)}"
# prompt = gr.Textbox(label="Prompt: Input your caption formatted as 'event1 at onset1-offset1_onset2-offset2 and event2 at onset1-offset1'.",
# value="spraying at 0.38-1.176_3.06-3.856 and gunshot at 1.729-3.729_4.367-6.367_7.031-9.031.",)
# outaudio = gr.Audio()
# num_steps = gr.Slider(label="num_steps", minimum=1, maximum=300, value=200, step=1)
# guidance_scale = gr.Slider(label="guidance_scale", minimum=0.1, maximum=8.0, value=3.0, step=0.1)
# gr_interface = gr.Interface(
# fn=infer,
# inputs=[prompt, num_steps, guidance_scale],
# outputs=[outaudio],
# title="PicoAudio",
# description=description_text,
# allow_flagging=False,
# examples=[
# ["spraying at 0.38-1.176_3.06-3.856 and gunshot at 1.729-3.729_4.367-6.367_7.031-9.031."],
# ["dog_barking at 0.562-2.562_4.25-6.25."],
# ["cow_mooing at 0.958-3.582_5.272-7.896."],
# ],
# cache_examples="lazy", # Turn on to cache.
# )
# gr_interface.queue(10).launch()