v0.13.3

Patch Changes

• d66aba5: Add createAsset helper method

v0.13.2

Patch Changes

• 362c715: Fixed MP3 detection to handle raw MP3 files without ID3 tags

  The MP3 asset detection now properly handles MP3 files that start with audio frame data instead of an ID3 tag header. This fixes the "unsupported image format" error when protecting MP3 files generated by encoders like lamejs that produce raw audio frames.

  Changes:

  • Added proper 11-bit sync word detection (0xFF + (byte1 & 0xE0) === 0xE0) for MP3 frame headers

v0.13.1

Patch Changes

• c3d5993: Use proper DER encoding for CMS SignedAttributes

v0.13.0

Minor Changes

• 1e7491c: Runtime Agnostic Streaming - Breaking API Change

  Changed APIs

  • writeToFile(path: string) → writeToStream(stream: WritableStream<Uint8Array>)

    This change affects:

  • AssetDataReader.writeToFile → AssetDataReader.writeToStream

  • Asset.writeToFile → Asset.writeToStream

  • BaseAsset.writeToFile → BaseAsset.writeToStream

  • BlobDataReader.writeToFile → BlobDataReader.writeToStream

  • BufferDataReader.writeToFile → BufferDataReader.writeToStream

    Migration Guide

    The caller is now responsible for creating the WritableStream using their runtime:

    Node.js:

    import { createWriteStream } from 'node:fs';
    import { Writable } from 'node:stream';
    
    const nodeStream = createWriteStream(outputPath);
    const writableStream = Writable.toWeb(nodeStream);
    await asset.writeToStream(writableStream);

    Removed Node.js Imports

  • Removed import { createWriteStream, WriteStream } from 'node:fs' from BlobDataReader.ts

  • Removed import { writeFile } from 'node:fs/promises' from BufferDataReader.ts

    This enables the library to be bundled for client-side applications (e.g., Next.js with Turbopack) without Node.js polyfills.

v0.12.1

Patch Changes

• 0831623: ### Browser Compatibility Fix

  Fixed a bundler error that occurred when using c2pa-ts in browser environments (e.g., Next.js with Turbopack).

  Problem:
  Top-level imports of Node.js fs and fs/promises modules in BlobDataReader and BufferDataReader caused build failures in browser bundlers, even though the writeToFile() method is only intended for Node.js usage.

  Solution:
  Converted static top-level imports to dynamic imports inside writeToFile() methods. This ensures the fs modules are only loaded when writeToFile() is actually called at runtime, allowing the library to be bundled for browser environments without errors.

  Note: The writeToFile() method remains Node.js-only and will fail if called in a browser environment.

v0.12.0

Minor Changes

• 1deb78f: Add MP4 video file support
  • Added support for MP4 video files (mp41, mp42, isom brands)
  • Implemented StcoBox and Co64Box classes for proper chunk offset patching when inserting C2PA manifests in MP4 files
  • Fixed QuickTime-style MetaBox parsing to handle both ISO BMFF and QuickTime formats
  • Fixed JUMBF extraction to exclude trailing padding bytes
  • Made metadata assertion JSON-LD parser more lenient with undefined prefixes
  • Added MP4 video signing and validation tests
  • MP4 files can now be signed and validated using BMFF v2 and v3 hash assertions

Patch Changes

• 6f65a61: Increase interoperability when using LocalTimestampProvider

v0.11.0

Minor Changes

• b3c0102: # Large Asset Support - Asset Abstraction

  ⚠️ Breaking API Changes — Several methods are now async. Add await where needed.

  What's New

  • Blob support: Assets accept Uint8Array or Blob — enables streaming large files (multi-GB) without loading into memory

  • writeToFile(path): Streams output directly to disk (preferred for large files)

  • getBlob(): Returns underlying Blob if available

    Breaking Changes

    Asset Creation & Interface

    The AssetType interface has been updated to support async creation and Blob sources. Use create() instead of new.

    // Before
    const asset = new JPEG(data);
    const canRead = JPEG.canRead(data);
    
    // After
    const asset = await JPEG.create(data);
    const canRead = await JPEG.canRead(data);

    Async Methods

    These methods are now async:

    Method	Now returns
    canRead()	Promise<boolean>
    create()	Promise<Asset>
    getManifestJUMBF()	Promise<Uint8Array | undefined>
    ensureManifestSpace()	Promise<void>
    writeManifestJUMBF()	Promise<void>

v0.10.0

Minor Changes

• 1e8b6e0: Write ECDSA signatures in P1363 format

v0.9.5

Patch Changes

• 68b9c64: Fix TypeScript 5.8+ ArrayBuffer/BufferSource compatibility inconsistencies

v0.9.4

Patch Changes

• 25ec311: github release