feat(lossless-round-trip): Implement lossless read writes

craigberry1 commented 3 weeks ago

Solves https://github.com/dcmjs-org/dcmjs/issues/398 by implementing lossless round trip read/writes to preserve original file data when tags are unmodified

Extracts any formatting or manipulation done to data element values into ValueRepresentation.applyFormatting
Maintain reference to original value via new _rawValue property on a data element
Detect changes to Value during writes to determine whether to maintain original unformatted value or update
Filter BinaryValueRepresentation from lossless processing by default to avoid duplicating large arrayBuffers like pixel data, but provide override mechanism via readOptions

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github-actions[bot] commented 3 weeks ago

:tada: This PR is included in version 0.34.0 :tada:

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dcmjs-org / dcmjs