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Replace OTIO Core with python-wrapped C++ #540

merged 140 commits into from Jul 22, 2019


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commented Jul 17, 2019

This PR replaces the pure-python core of OpenTimelineIO with python wrapped C++. The functionality should be the same. There are some differences:

  • RationalTime enforces float types for its values. Serialized otio files will see a lot of .0s added if files are compared before/after this change.
  • the Name field defaults to "" instead of None
  • The .metadata dictionaries are of type AnyDictionary, so OrderedDicts and other similar classes will lose their type when being added to the metadata immediately (instead of being lost on serialization).
  • There is no longer a .children attribute on container classes.
  • The tox.ini file was collapsed into the setup.cfg file, along with some tuning of the lint settings.

Note that the C++ core does not include support for any of the plugins. Those are still entirely implemented in python. Non-plugin features are present in C++:

  • Reading/writing .otio files
  • Iterating over objects
  • Manipulating OTIO objects

Much like the core python project, the C++ is split into two libraries: opentime for manipulating time objects, and opentimelineio, which has all the functionality of the OpenTimelineIO data structures.

This adds some dependencies to the project (managed through Git submodules in the src/deps directory). When you sync after this change you'll need to use the git submodule init command to sync the dependencies. These dependencies include:

  • CMake (note that pip install . should still work and invoke cmake correctly under the hood for python only users)
  • Rapidjson
  • AnyDictionary
  • Optional-lite
  • pybind11

This PR also includes some preliminary Swift bindings as well (see src/swift-opentimelineio).

Huge thanks to @davidbaraff who did the port to C++, as well as the python and swift bindings.

David Baraff and others added some commits Dec 9, 2018

mattyjams and others added some commits Jul 16, 2019

Marking python2 lines for noqa
- In python3, unicode and xrange have been removed.  Code was guarded by
  an if statement, so it wasn't hitting this during testing, but flake8
  was still detecting and erroring out on this in python3.  Just marking
  them as noqa for now so that flake8 ignores them.
Merge pull request #528 from ssteinbach/cxx
Catch CXX branch up to latest master

@ssteinbach ssteinbach added this to the 1.0 Release milestone Jul 17, 2019

@ssteinbach ssteinbach added this to To Do in C++ API via automation Jul 17, 2019

@ssteinbach ssteinbach referenced this pull request Jul 17, 2019

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commented Jul 17, 2019

Codecov Report

Merging #540 into master will decrease coverage by 7.38%.
The diff coverage is 81.28%.

Impacted file tree graph

@@            Coverage Diff             @@
##           master     #540      +/-   ##
- Coverage   88.66%   81.28%   -7.39%     
  Files          69       72       +3     
  Lines        7502     2731    -4771     
- Hits         6652     2220    -4432     
+ Misses        850      511     -339
Flag Coverage Δ
#py27 81.29% <81.29%> (?)
#py36 81.29% <81.29%> (?)
#py37 81.29% <81.29%> (?)
Impacted Files Coverage Δ
src/opentimelineio/stringUtils.h 0% <0%> (ø)
src/opentimelineio/unknownSchema.h 0% <0%> (ø)
src/opentimelineio/timeline.h 100% <100%> (ø)
src/opentimelineio/track.h 100% <100%> (ø)
src/opentimelineio/marker.h 100% <100%> (ø)
src/opentimelineio/timeEffect.cpp 100% <100%> (ø)
src/opentimelineio/item.h 100% <100%> (ø)
...eio/opentimelineio-bindings/otio_anyDictionary.cpp 100% <100%> (ø)
src/opentimelineio/freezeFrame.cpp 100% <100%> (ø)
src/opentimelineio/gap.cpp 100% <100%> (ø)
... and 134 more

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ssteinbach added some commits Jul 22, 2019

Merge pull request #543 from ssteinbach/cxx
Bumping beta version in Cxx branch to match master

@ssteinbach ssteinbach merged commit ba04951 into master Jul 22, 2019

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C++ API automation moved this from To Do to Done Jul 22, 2019

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