Track bundled vendor runtime sources
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63
vendor/ComfyUI/app/assets/services/image_dimensions.py
vendored
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63
vendor/ComfyUI/app/assets/services/image_dimensions.py
vendored
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"""Image dimension extraction for asset ingest.
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Reads only the image header via Pillow to capture width/height cheaply,
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without a full pixel decode. Returns a metadata dict suitable for merging
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into ``AssetReference.system_metadata``.
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"""
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from __future__ import annotations
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import logging
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from typing import Any
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logger = logging.getLogger(__name__)
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def extract_image_dimensions(
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file_path: str, mime_type: str | None = None
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) -> dict[str, Any] | None:
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"""Extract image dimensions for the file at ``file_path``.
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Args:
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file_path: Absolute path to a file on disk.
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mime_type: Optional MIME type hint. When provided and not prefixed
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with ``image/``, extraction is skipped without touching the file.
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Returns:
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``{"kind": "image", "width": W, "height": H}`` when the file is a
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recognizable image with positive dimensions, otherwise ``None``.
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The dict shape is intended to be merged into ``system_metadata`` so the
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asset response surfaces ``metadata.kind`` plus dimension fields for image
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assets. Forward-compatible: future media kinds (e.g. ``"video"`` with
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duration/fps) can extend this shape without schema changes.
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"""
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if mime_type is not None and not mime_type.startswith("image/"):
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return None
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try:
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from PIL import Image, UnidentifiedImageError
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except ImportError:
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logger.debug(
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"Pillow not available; skipping image dimension extraction for %s",
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file_path,
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)
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return None
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try:
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with Image.open(file_path) as img:
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width, height = img.size
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except (OSError, UnidentifiedImageError, ValueError) as exc:
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logger.debug(
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"Failed to read image dimensions from %s: %s", file_path, exc
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)
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return None
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if (
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not isinstance(width, int)
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or not isinstance(height, int)
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or width <= 0
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or height <= 0
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):
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return None
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return {"kind": "image", "width": width, "height": height}
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