Acly
fbf99f2a08
* short-lived in-memory cache for image transfers * upload images via HTTP to cache and load/reference them in workflows * save/store images in workflows to cache and download them via HTTP
405 lines
12 KiB
Python
405 lines
12 KiB
Python
from __future__ import annotations
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from copy import copy
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from dataclasses import dataclass
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import time
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from typing import NamedTuple
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from uuid import uuid4
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from PIL import Image
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import numpy as np
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import base64
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import torch
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import torch.nn.functional as F
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from io import BytesIO
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from server import PromptServer, BinaryEventTypes
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from comfy.clip_vision import ClipVisionModel
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from comfy.sd import StyleModel
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from comfy_api.latest import io
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class LoadImageBase64(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_LoadImageBase64",
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display_name="Load Image (Base64)",
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category="external_tooling",
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inputs=[io.String.Input("image", multiline=False)],
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outputs=[io.Image.Output(display_name="image"), io.Mask.Output(display_name="mask")],
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)
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@classmethod
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def execute(cls, image: str):
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_strip_prefix(image, "data:image/png;base64,")
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imgdata = base64.b64decode(image)
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img = Image.open(BytesIO(imgdata))
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if "A" in img.getbands():
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mask = np.array(img.getchannel("A")).astype(np.float32) / 255.0
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mask = torch.from_numpy(mask)
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else:
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mask = None
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img = img.convert("RGB")
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img = np.array(img).astype(np.float32) / 255.0
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img = torch.from_numpy(img)[None,]
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return (img, mask)
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class LoadMaskBase64(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_LoadMaskBase64",
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display_name="Load Mask (Base64)",
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category="external_tooling",
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inputs=[io.String.Input("mask", multiline=False)],
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outputs=[io.Mask.Output(display_name="mask")],
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)
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@classmethod
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def execute(cls, mask: str):
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_strip_prefix(mask, "data:image/png;base64,")
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imgdata = base64.b64decode(mask)
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img = Image.open(BytesIO(imgdata))
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img = np.array(img).astype(np.float32) / 255.0
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img = torch.from_numpy(img)
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if img.dim() == 3: # RGB(A) input, use red channel
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img = img[:, :, 0]
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return (img.unsqueeze(0),)
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class SendImageWebSocket(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_SendImageWebSocket",
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display_name="Send Image (WebSocket)",
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category="external_tooling",
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inputs=[
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io.Image.Input("images"),
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io.Combo.Input("format", options=["PNG", "JPEG"], default="PNG"),
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],
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is_output_node=True,
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)
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@classmethod
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def execute(cls, images: torch.Tensor, format: str):
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results = []
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for tensor in images:
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array = 255.0 * tensor.cpu().numpy()
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image = Image.fromarray(np.clip(array, 0, 255).astype(np.uint8))
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server = PromptServer.instance
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server.send_sync(
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BinaryEventTypes.UNENCODED_PREVIEW_IMAGE,
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[format, image, None],
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server.client_id,
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)
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results.append({
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"source": "websocket",
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"content-type": f"image/{format.lower()}",
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"type": "output",
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})
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return io.NodeOutput(ui={"images": results})
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class ImageCache:
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@dataclass
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class Entry:
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data: bytes
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content_type: str
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timestamp: float
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retrieved: int
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def __init__(self):
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self.images: dict[str, ImageCache.Entry] = {}
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def add(self, image: Image.Image, format: str):
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key = uuid4().hex
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with BytesIO() as output:
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image.save(output, format=format, quality=95, compress_level=1)
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image_data = output.getvalue()
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self.insert(key, image_data, f"image/{format.lower()}")
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return key
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def insert(self, key: str, data: bytes, content_type: str):
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self.images[key] = ImageCache.Entry(
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data=data,
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content_type=content_type,
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timestamp=time.time(),
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retrieved=0,
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)
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def get(self, key: str, extend: bool = False):
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entry = self.images.get(key)
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if entry is None:
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return None, None
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entry.retrieved += 1
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if extend:
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entry.timestamp = time.time()
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self.prune()
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return entry.data, entry.content_type
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def prune(self):
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now = time.time()
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keys_to_delete = []
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for key, entry in self.images.items():
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d = now - entry.timestamp
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if (d > 60 and entry.retrieved > 1) or d > 600:
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keys_to_delete.append(key)
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for key in keys_to_delete:
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del self.images[key]
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def __contains__(self, key: str):
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return key in self.images
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image_cache = ImageCache()
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class LoadImageCache(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_LoadImageCache",
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display_name="Load Image from Cache",
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category="external_tooling",
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inputs=[io.String.Input("id", multiline=False)],
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outputs=[io.Image.Output(display_name="image"), io.Mask.Output(display_name="mask")],
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)
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@classmethod
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def execute(cls, id: str):
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image_data, content_type = image_cache.get(id, extend=True)
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if image_data is None:
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raise ValueError(f"Image with ID {id} not found in cache.")
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img = Image.open(BytesIO(image_data))
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w, h = img.size
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c = len(img.getbands())
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normalized = np.array(img).astype(np.float32) / 255.0
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tensor = torch.from_numpy(normalized).reshape(1, h, w, c)
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match c:
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case 1:
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image = tensor.expand(1, h, w, 3)
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mask = tensor.reshape(1, h, w)
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case 3:
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image = tensor
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mask = tensor[..., 0]
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case 4:
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image = tensor[..., :3]
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mask = tensor[..., 3]
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return io.NodeOutput(image, mask)
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class SaveImageCache(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_SaveImageCache",
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display_name="Save Image to Cache",
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category="external_tooling",
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inputs=[
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io.Image.Input("images"),
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io.Combo.Input("format", options=["PNG", "JPEG"], default="PNG"),
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],
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is_output_node=True,
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)
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@classmethod
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def execute(cls, images: torch.Tensor, format: str):
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results = []
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for tensor in images:
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array = 255.0 * tensor.cpu().numpy()
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image = Image.fromarray(np.clip(array, 0, 255).astype(np.uint8))
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key = image_cache.add(image, format)
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results.append({
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"source": "http",
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"id": key,
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"content-type": f"image/{format.lower()}",
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"type": "output",
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})
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return io.NodeOutput(ui={"images": results})
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def to_bchw(image: torch.Tensor):
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if image.ndim == 3:
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image = image.unsqueeze(0)
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return image.movedim(-1, 1)
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def to_bhwc(image: torch.Tensor):
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return image.movedim(1, -1)
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def mask_batch(mask: torch.Tensor):
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if mask.ndim == 2:
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mask = mask.unsqueeze(0)
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return mask
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class ApplyMaskToImage(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_ApplyMaskToImage",
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display_name="Apply Mask to Image",
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category="external_tooling",
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inputs=[
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io.Image.Input("image"),
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io.Mask.Input("mask"),
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],
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outputs=[io.Image.Output(display_name="masked")],
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)
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@classmethod
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def execute(cls, image: torch.Tensor, mask: torch.Tensor):
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out = to_bchw(image)
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if out.shape[1] == 3: # Assuming RGB images
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out = torch.cat([out, torch.ones_like(out[:, :1, :, :])], dim=1)
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mask = mask_batch(mask)
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assert mask.ndim == 3, f"Mask should have shape [B, H, W]. {mask.shape}"
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assert out.ndim == 4, f"Image should have shape [B, C, H, W]. {out.shape}"
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assert out.shape[-2:] == mask.shape[-2:], (
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f"Image size {out.shape[-2:]} must match mask size {mask.shape[-2:]}"
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)
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is_mask_batch = mask.shape[0] == out.shape[0]
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# Apply each mask in the batch to its corresponding image's alpha channel
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for i in range(out.shape[0]):
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alpha = mask[i] if is_mask_batch else mask[0]
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out[i, 3, :, :] = alpha
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return (to_bhwc(out),)
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class _ReferenceImageData(NamedTuple):
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image: torch.Tensor
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weight: float
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range: tuple[float, float]
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class ReferenceImage(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_ReferenceImage",
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display_name="Reference Image",
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category="external_tooling",
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inputs=[
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io.Image.Input("image"),
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io.Float.Input("weight", default=1.0, min=0.0, max=10.0),
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io.Float.Input("range_start", default=0.0, min=0.0, max=1.0),
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io.Float.Input("range_end", default=1.0, min=0.0, max=1.0),
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io.Custom("ReferenceImage").Input("reference_images", optional=True),
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],
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outputs=[io.Custom("ReferenceImage").Output(display_name="reference_images")],
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)
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@classmethod
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def execute(
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cls,
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image: torch.Tensor,
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weight: float,
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range_start: float,
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range_end: float,
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reference_images: list[_ReferenceImageData] | None = None,
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):
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imgs = copy(reference_images) if reference_images is not None else []
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imgs.append(_ReferenceImageData(image, weight, (range_start, range_end)))
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return (imgs,)
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class ApplyReferenceImages(io.ComfyNode):
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@classmethod
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def define_schema(cls):
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return io.Schema(
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node_id="ETN_ApplyReferenceImages",
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display_name="Apply Reference Images",
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category="external_tooling",
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inputs=[
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io.Conditioning.Input("conditioning"),
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io.ClipVision.Input("clip_vision"),
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io.StyleModel.Input("style_model"),
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io.Custom("ReferenceImage").Input("references"),
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],
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outputs=[io.Conditioning.Output(display_name="conditioning")],
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)
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@classmethod
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def execute(
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cls,
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conditioning: list[list],
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clip_vision: ClipVisionModel,
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style_model: StyleModel,
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references: list[_ReferenceImageData],
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):
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delimiters = {0.0, 1.0}
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delimiters |= set(r.range[0] for r in references)
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delimiters |= set(r.range[1] for r in references)
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delimiters = sorted(delimiters)
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ranges = [(delimiters[i], delimiters[i + 1]) for i in range(len(delimiters) - 1)]
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embeds = [_encode_image(r.image, clip_vision, style_model, r.weight) for r in references]
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base = conditioning[0][0]
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result = []
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for start, end in ranges:
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e = [
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embeds[i]
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for i, r in enumerate(references)
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if r.range[0] <= start and r.range[1] >= end
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]
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options = conditioning[0][1].copy()
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options["start_percent"] = start
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options["end_percent"] = end
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result.append((torch.cat([base] + e, dim=1), options))
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return (result,)
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def _encode_image(
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image: torch.Tensor, clip_vision: ClipVisionModel, style_model: StyleModel, weight: float
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):
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e = clip_vision.encode_image(image)
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e = style_model.get_cond(e).flatten(start_dim=0, end_dim=1).unsqueeze(dim=0)
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e = _downsample_image_cond(e, weight)
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return e
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def _downsample_image_cond(cond: torch.Tensor, weight: float):
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if weight >= 1.0:
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return cond
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elif weight <= 0.0:
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return torch.zeros_like(cond)
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elif weight >= 0.6:
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factor = 2
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elif weight >= 0.3:
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factor = 3
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else:
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factor = 4
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# Downsample the clip vision embedding to make it smaller, resulting in less impact
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# compared to other conditioning.
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# See https://github.com/kaibioinfo/ComfyUI_AdvancedRefluxControl
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(b, t, h) = cond.shape
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m = int(np.sqrt(t))
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cond = F.interpolate(
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cond.view(b, m, m, h).transpose(1, -1),
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size=(m // factor, m // factor),
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mode="area",
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)
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return cond.transpose(1, -1).reshape(b, -1, h)
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def _strip_prefix(s: str, prefix: str) -> str:
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if s.startswith(prefix):
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return s[len(prefix) :]
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return s
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