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Raykosan-ComfyUI_RaykoStudio/Rayko_VAE_Save_Image.py
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# SPDX-License-Identifier: Apache-2.0
# Copyright 2025-2026 Raykosan (RaykoStudio)
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
import json
import numpy as np
import re
from datetime import datetime
from PIL import Image
from PIL.PngImagePlugin import PngInfo
import folder_paths
import torch
class RS_VAE_Decode_Save:
def __init__(self):
self.output_dir = folder_paths.get_output_directory()
@classmethod
def INPUT_TYPES(cls):
return {
"required": {
"samples": ("LATENT",),
"vae": ("VAE",),
"filename_prefix": ("STRING", {"default": "ComfyUI"}),
"format": (["png", "jpg", "webp"], {"default": "png"}),
},
"hidden": {
"prompt": "PROMPT",
"extra_pnginfo": "EXTRA_PNGINFO",
},
}
RETURN_TYPES = ("IMAGE",)
RETURN_NAMES = ("image",)
FUNCTION = "decode_and_save"
OUTPUT_NODE = True
CATEGORY = "🦊 RaykoStudio"
DESCRIPTION = "Combines native VAE Decode and Save Image into a single node."
PNG_COMPRESSION = 1
JPG_QUALITY = 90
WEBP_QUALITY = 90
EMBED_WORKFLOW = True
OVERWRITE_EXISTING = False
@staticmethod
def _sanitize_path_component(component: str) -> str:
"""Sanitizes a string to be safe for use in file paths."""
if not isinstance(component, str):
component = str(component)
component = component.replace("\\", "/")
while "../" in component or "./" in component:
component = component.replace("../", "").replace("./", "")
if os.path.isabs(component):
component = os.path.basename(component)
component = re.sub(r'[<>:"|?*]', '_', component)
if not component.strip():
component = "sanitized_empty"
return component.strip()
@staticmethod
def _normalize_images(images):
while images.dim() > 4 and images.shape[0] == 1:
images = images.squeeze(0)
if images.dim() == 2:
images = images.unsqueeze(0).unsqueeze(-1)
if images.dim() == 3:
images = images.unsqueeze(0)
if images.dim() != 4:
raise ValueError(f"[RS] Unexpected tensor dims: {images.shape}")
b, d1, d2, d3 = images.shape
second_is_ch = d1 in (1, 3, 4) and d3 not in (1, 3, 4)
last_is_ch = d3 in (1, 3, 4) and d1 not in (1, 3, 4)
if second_is_ch and not last_is_ch:
images = images.permute(0, 2, 3, 1)
elif d1 == 1 and d3 > 4:
images = images.squeeze(1).unsqueeze(-1)
if images.shape[-1] == 1:
images = images.repeat(1, 1, 1, 3)
if images.dtype != torch.float32:
images = images.float()
images = torch.clamp(images, 0.0, 1.0)
return images
def _get_next_filename(self, directory, base_name, extension, is_batch, batch_index=None):
try:
safe_base_name = self._sanitize_path_component(base_name)
safe_extension = self._sanitize_path_component(extension).lower()
test_path = os.path.join(directory, f"{safe_base_name}.{safe_extension}")
real_dir = os.path.realpath(directory)
real_path = os.path.realpath(test_path)
if not real_path.startswith(real_dir + os.sep) and real_path != real_dir:
print(f"[RS] Security Warning: Path traversal detected in '{base_name}'. Falling back to safe name.")
safe_base_name = "unsafe_input_sanitized"
if self.OVERWRITE_EXISTING:
if is_batch and batch_index is not None:
return os.path.join(directory, f"{safe_base_name}_{batch_index:03d}.{safe_extension}")
return os.path.join(directory, f"{safe_base_name}_001.{safe_extension}")
if is_batch and batch_index is not None:
base_with_index = f"{safe_base_name}_{batch_index:03d}"
pattern = re.compile(rf'^{re.escape(base_with_index)}_(\d+)\.{re.escape(safe_extension)}$')
else:
pattern = re.compile(rf'^{re.escape(safe_base_name)}_(\d+)\.{re.escape(safe_extension)}$')
max_num = 0
if os.path.exists(directory):
for f in os.listdir(directory):
match = pattern.match(f)
if match:
num = int(match.group(1))
if num > max_num:
max_num = num
next_num = max_num + 1
if is_batch and batch_index is not None:
filename = f"{safe_base_name}_{batch_index:03d}_{next_num:03d}.{safe_extension}"
else:
filename = f"{safe_base_name}_{next_num:03d}.{safe_extension}"
return os.path.join(directory, filename)
except Exception as e:
print(f"[RS] Filename error: {e}")
ts = datetime.now().strftime("%Y%m%d_%H%M%S")
return os.path.join(directory, f"error_fallback_{ts}.png")
def _build_workflow_json(self, prompt, extra_pnginfo):
try:
if extra_pnginfo and 'workflow' in extra_pnginfo:
wf = extra_pnginfo['workflow']
if 'prompt' not in wf:
wf['prompt'] = prompt
return wf
return {"prompt": prompt or {}, "workflow_info": "Generated by RS Decode Save"}
except Exception as e:
print(f"[RS] Workflow JSON error: {e}")
return {"prompt": prompt or {}}
def _save_workflow_json(self, image_path, workflow_data):
try:
json_path = os.path.splitext(image_path)[0] + ".json"
with open(json_path, 'w', encoding='utf-8') as f:
json.dump(workflow_data, f, ensure_ascii=False, indent=2)
except Exception as e:
print(f"[RS] Workflow JSON save error: {e}")
def _save_single(self, image_tensor, save_dir, base_filename, fmt,
prompt, extra_pnginfo, is_batch, batch_index=None):
try:
ext_map = {"png": "png", "jpg": "jpg", "webp": "webp"}
extension = ext_map.get(fmt, "png")
filepath = self._get_next_filename(save_dir, base_filename, extension, is_batch, batch_index)
img_array = np.clip(255.0 * image_tensor.cpu().numpy(), 0, 255).astype(np.uint8)
img = Image.fromarray(img_array)
save_kwargs = {}
if fmt == "png":
save_kwargs["compress_level"] = self.PNG_COMPRESSION
if self.EMBED_WORKFLOW and prompt:
metadata = PngInfo()
metadata.add_text("prompt", json.dumps(prompt))
if extra_pnginfo:
for key, value in extra_pnginfo.items():
try:
metadata.add_text(key, json.dumps(value))
except Exception:
pass
save_kwargs["pnginfo"] = metadata
elif fmt == "jpg":
save_kwargs["quality"] = self.JPG_QUALITY
save_kwargs["optimize"] = True
save_kwargs["progressive"] = True
if self.EMBED_WORKFLOW and (prompt or extra_pnginfo):
self._save_workflow_json(filepath, self._build_workflow_json(prompt, extra_pnginfo))
elif fmt == "webp":
save_kwargs["quality"] = self.WEBP_QUALITY
save_kwargs["method"] = 4
if self.EMBED_WORKFLOW and (prompt or extra_pnginfo):
self._save_workflow_json(filepath, self._build_workflow_json(prompt, extra_pnginfo))
img.save(filepath, **save_kwargs)
return filepath
except Exception as e:
print(f"[RS] Save error: {e}")
return ""
def decode_and_save(self, samples, vae, filename_prefix, format,
prompt=None, extra_pnginfo=None):
images = vae.decode(samples["samples"])
images = self._normalize_images(images)
safe_prefix = self._sanitize_path_component(filename_prefix)
full_output_folder, fn_prefix, counter, subfolder, _ = \
folder_paths.get_save_image_path(safe_prefix, self.output_dir,
images[0].shape[1], images[0].shape[0])
batch_size = images.shape[0]
is_batch = batch_size > 1
ext_map = {"png": "png", "jpg": "jpg", "webp": "webp"}
extension = ext_map.get(format, "png")
saved_files = []
for i in range(batch_size):
batch_index = i + 1 if is_batch else None
file_counter = counter + i
filename = f"{fn_prefix}_{file_counter:05}.{extension}"
filepath = os.path.join(full_output_folder, filename)
img_array = np.clip(255.0 * images[i].cpu().numpy(), 0, 255).astype(np.uint8)
img = Image.fromarray(img_array)
save_kwargs = {}
if format == "png":
save_kwargs["compress_level"] = self.PNG_COMPRESSION
if self.EMBED_WORKFLOW and prompt:
metadata = PngInfo()
metadata.add_text("prompt", json.dumps(prompt))
if extra_pnginfo:
for key, value in extra_pnginfo.items():
try:
metadata.add_text(key, json.dumps(value))
except Exception:
pass
save_kwargs["pnginfo"] = metadata
elif format == "jpg":
save_kwargs["quality"] = self.JPG_QUALITY
save_kwargs["optimize"] = True
save_kwargs["progressive"] = True
if self.EMBED_WORKFLOW and (prompt or extra_pnginfo):
self._save_workflow_json(filepath, self._build_workflow_json(prompt, extra_pnginfo))
elif format == "webp":
save_kwargs["quality"] = self.WEBP_QUALITY
save_kwargs["method"] = 4
if self.EMBED_WORKFLOW and (prompt or extra_pnginfo):
self._save_workflow_json(filepath, self._build_workflow_json(prompt, extra_pnginfo))
img.save(filepath, **save_kwargs)
saved_files.append({
"filename": filename,
"subfolder": subfolder,
"type": "output"
})
return {"ui": {"images": saved_files}, "result": (images,)}
NODE_CLASS_MAPPINGS = {
"RS_VAE_Decode_Save": RS_VAE_Decode_Save,
}
NODE_DISPLAY_NAME_MAPPINGS = {
"RS_VAE_Decode_Save": "🦊 RS Decode Save",
}