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Merge pull request #19322 from TolyaTalamanov:at/python-callbacks

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[G-API] Introduce cv.gin/cv.descr_of for python

* Implement cv.gin/cv.descr_of

* Fix macos build

* Fix gcomputation tests

* Add test

* Add using to a void exceeded length for windows build

* Add using to a void exceeded length for windows build

* Fix comments to review

* Fix comments to review

* Update from latest master

* Avoid graph compilation to obtain in/out info

* Fix indentation

* Fix comments to review

* Avoid using default in switches

* Post output meta for giebackend
This commit is contained in:
Anatoliy Talamanov
2021-03-01 18:52:11 +03:00
committed by GitHub
parent 7bcb51eded
commit eb82ba36a3
26 changed files with 825 additions and 220 deletions
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modules/gapi/test/streaming/gapi_streaming_tests.cpp
+51 -1
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@@ -1282,7 +1282,7 @@ TEST(Streaming, Python_Pull_Overload)
cv::Mat in_mat(sz, CV_8UC3);
cv::randu(in_mat, cv::Scalar::all(0), cv::Scalar(255));
auto ccomp = c.compileStreaming(cv::descr_of(in_mat));
auto ccomp = c.compileStreaming();
EXPECT_TRUE(ccomp);
EXPECT_FALSE(ccomp.running());
@@ -1895,4 +1895,54 @@ TEST(GAPI_Streaming, AccessBGRFromNV12Frame)
}
}
TEST(GAPI_Streaming, TestPythonAPI)
{
cv::Size sz(200, 200);
cv::Mat in_mat(sz, CV_8UC3);
cv::randu(in_mat, cv::Scalar::all(0), cv::Scalar(255));
const auto crop_rc = cv::Rect(13, 75, 100, 100);
// OpenCV reference image
cv::Mat ocv_mat;
{
ocv_mat = in_mat(crop_rc);
}
cv::GMat in;
auto roi = cv::gapi::crop(in, crop_rc);
cv::GComputation comp(cv::GIn(in), cv::GOut(roi));
// NB: Used by python bridge
auto cc = comp.compileStreaming(cv::detail::ExtractMetaCallback{[&](const cv::GTypesInfo& info)
{
GAPI_Assert(info.size() == 1u);
GAPI_Assert(info[0].shape == cv::GShape::GMAT);
return cv::GMetaArgs{cv::GMetaArg{cv::descr_of(in_mat)}};
}});
// NB: Used by python bridge
cc.setSource(cv::detail::ExtractArgsCallback{[&](const cv::GTypesInfo& info)
{
GAPI_Assert(info.size() == 1u);
GAPI_Assert(info[0].shape == cv::GShape::GMAT);
return cv::GRunArgs{in_mat};
}});
cc.start();
bool is_over = false;
cv::GRunArgs out_args;
// NB: Used by python bridge
std::tie(is_over, out_args) = cc.pull();
ASSERT_EQ(1u, out_args.size());
ASSERT_TRUE(cv::util::holds_alternative<cv::Mat>(out_args[0]));
EXPECT_EQ(0, cvtest::norm(ocv_mat, cv::util::get<cv::Mat>(out_args[0]), NORM_INF));
EXPECT_TRUE(is_over);
cc.stop();
}
} // namespace opencv_test