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from importlib import import_module
from types import ModuleType
from PIL import Image
import io
def get_pipeline_class(pipeline_name: str) -> ModuleType:
try:
module = import_module(f"pipelines.{pipeline_name}")
except ModuleNotFoundError:
raise ValueError(f"Pipeline {pipeline_name} module not found")
pipeline_class = getattr(module, "Pipeline", None)
if pipeline_class is None:
raise ValueError(f"'Pipeline' class not found in module '{pipeline_name}'.")
return pipeline_class
def bytes_to_pil(image_bytes: bytes) -> Image.Image:
image = Image.open(io.BytesIO(image_bytes))
return image
def pil_to_frame(image: Image.Image) -> bytes:
frame_data = io.BytesIO()
image.save(frame_data, format="JPEG", quality=80, optimize=True, progressive=True)
frame_data = frame_data.getvalue()
return (
b"--frame\r\n"
+ b"Content-Type: image/jpeg\r\n"
+ f"Content-Length: {len(frame_data)}\r\n\r\n".encode()
+ frame_data
+ b"\r\n"
)
def is_firefox(user_agent: str) -> bool:
return "Firefox" in user_agent
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