Files
viralfactory/src/engines/AssetsEngine/DallEAssetsEngine.py

98 lines
3.3 KiB
Python

import os
from typing import Literal, TypedDict
import gradio as gr
import moviepy.editor as mp
import openai
import requests
from moviepy.video.fx.resize import resize
from . import BaseAssetsEngine
class Spec(TypedDict):
prompt: str
start: float
end: float
style: Literal["vivid", "natural"]
class DallEAssetsEngine(BaseAssetsEngine):
name = "DALL-E"
description = "A powerful image generation model by OpenAI."
spec_name = "dalle"
spec_description = (
"Use the dall-e 3 model to generate images from a detailed prompt."
)
specification = {
"prompt": "A detailed prompt to generate the image from. Describe every subtle detail of the image you want to generate. [str]",
"start": "The starting time of the video clip. [float]",
"end": "The ending time of the video clip. [float]",
"style": "The style of the generated images. Must be one of vivid or natural. Vivid causes the model to lean towards generating hyper-real and dramatic images. Natural causes the model to produce more natural, less hyper-real looking images. [str]",
}
num_options = 1
def __init__(self, options: dict):
self.aspect_ratio: Literal["portrait", "square", "landscape"] = options[0]
super().__init__()
def get_assets(self, options: list[Spec]) -> list[mp.ImageClip]:
max_width = self.ctx.width / 3 * 2
clips = []
for option in options:
prompt = option["prompt"]
start = option["start"]
end = option["end"]
style = option["style"]
size = (
"1024x1024"
if self.aspect_ratio == "square"
else "1024x1792"
if self.aspect_ratio == "portrait"
else "1792x1024"
)
try:
response = openai.images.generate(
model="dall-e-3",
prompt=prompt,
size=size,
n=1,
style=style,
response_format="url",
)
except openai.BadRequestError as e:
if e.code == "content_policy_violation":
# we skip this prompt
continue
else:
raise
img = requests.get(response.data[0].url)
with open("temp.png", "wb") as f:
f.write(img.content)
img = mp.ImageClip("temp.png")
os.remove("temp.png")
img: mp.ImageClip = img.set_duration(end - start)
img: mp.ImageClip = img.set_start(start)
img: mp.ImageClip = resize(img, width=max_width)
if self.aspect_ratio == "portrait":
img: mp.ImageClip = img.set_position(("center", "top"))
elif self.aspect_ratio == "landscape":
img: mp.ImageClip = img.set_position(("center", "top"))
elif self.aspect_ratio == "square":
img: mp.ImageClip = img.set_position(("center", "top"))
clips.append(img)
return clips
@classmethod
def get_options(cls):
return [
gr.Radio(
["portrait", "square", "landscape"],
label="Aspect Ratio",
value="square",
)
]