Changelog

0.4.0.dev0

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0.3.0 / 2026-05-21

Starting from this version, LiberTEM-live is now available under the MIT license. A major improvement is the new Merlin QD backend written in rust, which should improve both performance and stability.

Features

• Support for Python 3.13 and 3.14 (#175, #188), removing support for Python 3.9 (#190).

• Rewritten backend for the QD Merlin Medipix, for better performance and stability (#161, #160)

• Properly cancel UDF runs when data stream is interrupted (#121) - raise a UDFRunCancelled when we receive less data than expected.

• Support specifying a dwell time to the Merlin simulator in the same way as for the Dectris simulator (#195).

Bugfixes

• Multiple fixes for the merlin simulator (#159, #191), allowing multiple acquisitions per connection, fixing sequence numbering, generated acquisition header, and control socket handling.

0.2.1 / 2023-05-09

Updated the packaging to include the tests in the sdist (#99), and add tests that don’t require “real” test data (#102, #103).

0.2.0 / 2023-04-21

This release updates LiberTEM-live to use the new features of LiberTEM v0.11 and the pipelined executor (#51), and adds support for streaming data from two new detectors. It introduces a new, more convenient API for connecting to detectors and running UDFs in an active or passive way. It also includes enhancements for Merlin Medipix support.

Certain parts of LiberTEM-live are now implemented in Rust with Python bindings, these now live in the LiberTEM-rs repository. Among other things, this includes receiving data directly into a shared memory area.

This release also drops support for Python 3.6, which is no longer supported upstream.

New features

• Support for DECTRIS detectors, like QUADRO or ARINA (#51, #74).

• Initial support for ASI TPX3 detectors (#81).

• Support for 2x2 layouts of Merlin Medipix, including 1/6/12bit raw data formats (#36, #34).

• Recording data with RecordUDF (#51).

• Updated user-facing APIs (#74).

  • Most operations are now reachable just by importing the libertem_live.api.LiveContext, no need to manually import detector-specific classes etc.

  • Introduce libertem_live.hooks.Hooks as a replacement for the trigger function that is open for future enhancements.

  • Generic interface libertem_live.api.LiveContext.make_acquisition() for creating acquisition objects; the detector specific parameters are now mostly specified in libertem_live.api.LiveContext.make_connection(). Connecting and creating an acquisition object is now a two-step process.

  • Support for a passive acquisition workflow using libertem_live.detectors.base.connection.DetectorConnection.wait_for_acquisition().

• Automatically determine nav_shape if possible (#74).

  • This is only possible in passive mode, as we have to know the nav_shape in active mode.

  • If the automatic mode doesn’t work for you, it’s still possible to manually specify the shape, or to override libertem_live.hooks.Hooks.on_determine_nav_shape() which takes precedence over the automatic detection.

  • It’s now possible to have placeholders in the nav_shape, which will be filled with the remainder of the shape. For example, It’s possible to specify (-1, -1) and get a 2D shape, or something like (128, -1) to fill the last dimension automatically, based on the number of frames in the acquisition.

Bugfixes

• Fix for the low level Merlin Medipix API, adding async and iterator support (#30).

• Fix flakyness in the Merlin Medipix receiver, which could misbehave at the end of an acquisition (#31).

Obsolescence

• Drop Python 3.6 support (#68).

• All acquisition objects now take the same parameter set, meaning scripts using the early Merlin Medipix support need to be adjusted to the new API (#27 and others).

0.1.0 / 2021-06-29

Initial release with support for Quantum Detectors Merlin.