Add support for feed-forward multi-track video requests.

[jrobble]

Issues:

• Support feeding foward all tracks to one sub-job (for Python video jobs only) openmpf#1907

Related PRs:

• Add support for feed-forward multi-track video requests. openmpf#1906
• Add support for feed-forward multi-track video requests. openmpf-python-component-sdk#91
• Add support for feed-forward multi-track video requests. #129
• Document FEED_FORWARD_ALL_TRACKS behavior. openmpf.github.io#203
• DUMMY: Add PythonTestComponent. openmpf-docker#242

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This change is 

[brosenberg42]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @jrobble)

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detection/api/include/MPFDetectionComponent.h line 248 at r2 (raw file):

        virtual std::vector<MPFVideoTrack> GetDetections(const MPFVideoJob &job) = 0;

        virtual std::vector<MPFVideoTrack> GetDetections(const MPFAllVideoTracksJob &job) {

I think this could cause confusion since a C++ developer could override this method. We could remove this method and throw the exception in CppComponentHandle. Then, C++ component developers would not see the method at all.

[jrobble]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @brosenberg42 and @jrobble)

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detection/api/include/MPFDetectionComponent.h line 248 at r2 (raw file):

Previously, brosenberg42 wrote…

I think this could cause confusion since a C++ developer could override this method. We could remove this method and throw the exception in CppComponentHandle. Then, C++ component developers would not see the method at all.

Removing this method results in this error:

/home/mpf/git/openmpf-projects/openmpf/trunk/detection/executor/cpp/cli-runner/MpfCppSdkPythonBindings.cpp:189:100: error: no matching function for call to ‘MPF::COMPONENT::MPFDetectionComponent::GetDetections(const MPF::COMPONENT::MPFAllVideoTracksJob&)’
  189 |                  [](CppComponent& c, const MPFAllVideoTracksJob &job) { return c->GetDetections(job); },
      |

I had to also update MpfCppSdkPythonBindings.cpp:

            .def("GetDetections",
                    [](CppComponent& c, const MPFAllVideoTracksJob &job) {
                        throw std::runtime_error{"MPFAllVideoTracksJob is not currently supported."}; 
                    },
                    "job"_a,
                    call_guard_t())

[brosenberg42]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @jrobble)

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detection/api/include/MPFDetectionComponent.h line 248 at r2 (raw file):

Previously, jrobble (Jeff Robble) wrote…

Removing this method results in this error:

/home/mpf/git/openmpf-projects/openmpf/trunk/detection/executor/cpp/cli-runner/MpfCppSdkPythonBindings.cpp:189:100: error: no matching function for call to ‘MPF::COMPONENT::MPFDetectionComponent::GetDetections(const MPF::COMPONENT::MPFAllVideoTracksJob&)’
  189 |                  [](CppComponent& c, const MPFAllVideoTracksJob &job) { return c->GetDetections(job); },
      |

I had to also update MpfCppSdkPythonBindings.cpp:

            .def("GetDetections",
                    [](CppComponent& c, const MPFAllVideoTracksJob &job) {
                        throw std::runtime_error{"MPFAllVideoTracksJob is not currently supported."}; 
                    },
                    "job"_a,
                    call_guard_t())

Now that you have updated MpfCppSdkPythonBindings, can this be removed?