swarmauri_xmp_gif

swarmauri_xmp_gif includes the GIFXMP handler that preserves XMP packets inside GIF89a application extensions using the canonical XMP Data identifier and XMP authentication code.

Features

• Registry native ? extends EmbedXmpBase so managers such as EmbedXMP can discover it through Swarmauri's dynamic registry.
• Block aware ? iterates GIF sub-blocks safely and terminates on sentinel bytes to avoid corrupting animations.
• Spec aligned ? writes uncompressed UTF-8 payloads that match Adobe's guidance for GIF metadata.

Installation

# pip
pip install swarmauri_xmp_gif

# uv
uv add swarmauri_xmp_gif

Usage

from pathlib import Path

from swarmauri_xmp_gif import GIFXMP

handler = GIFXMP()
gif_path = Path("example.gif")
xmp_packet = """<x:xmpmeta xmlns:x='adobe:ns:meta/'><rdf:RDF>...</rdf:RDF></x:xmpmeta>"""

# Embed using an application extension block
updated_bytes = handler.write_xmp(gif_path.read_bytes(), xmp_packet)
gif_path.write_bytes(updated_bytes)

# Retrieve the RDF/XML payload
restored_xml = handler.read_xmp(updated_bytes)
print(restored_xml)

# Remove the extension again
clean_bytes = handler.remove_xmp(updated_bytes)

Why it works

• Standards-based ? uses the XMP-defined App ID and Auth Code from Adobe's reference implementation.
• Chunk-aware ? scans GIF sub-blocks safely, terminating on sentinel bytes and ignoring malformed payloads.
• Registry-native ? inherits from EmbedXmpBase, so managers only need to query the component registry.

Project Resources

• Source: https://github.com/swarmauri/swarmauri-sdk
• License: Apache 2.0