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Merge pull request #14952 from smirnov-alexey:gapi_transform_macro_rework

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G-API: GAPI_TRANSFORM internal functionality rework (#14952)

* Change internal pattern and substitute signatures and refactor tests

* Enhance GArrayU with type-checker function

Add a couple of new tests on GAPI_TRANSFORM
pull/15140/head
Alexey Smirnov 5 years ago committed by Alexander Alekhin
parent 89f23a35c5
commit 8313209704
3 changed files with 106 additions and 67 deletions
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  1. 30
      modules/gapi/include/opencv2/gapi/garray.hpp
  2. 21
      modules/gapi/include/opencv2/gapi/gtransform.hpp
  3. 122
      modules/gapi/test/gapi_transform_tests.cpp

30
modules/gapi/include/opencv2/gapi/garray.hpp
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@ -55,6 +55,12 @@ namespace detail
class VectorRef;
using ConstructVec = std::function<void(VectorRef&)>;
// This is the base struct for GArrayU type holder
struct TypeHintBase{virtual ~TypeHintBase() = default;};
// This class holds type of initial GArray to be checked from GArrayU
template <typename T>
struct TypeHint final : public TypeHintBase{};
// This class strips type information from GArray<T> and makes it usable
// in the G-API graph compiler (expression unrolling, graph generation, etc).
@ -64,6 +70,9 @@ namespace detail
public:
GArrayU(const GNode &n, std::size_t out); // Operation result constructor
template <typename T>
bool holds() const; // Check if was created from GArray<T>
GOrigin& priv(); // Internal use only
const GOrigin& priv() const; // Internal use only
@ -73,7 +82,23 @@ namespace detail
void setConstructFcn(ConstructVec &&cv); // Store T-aware constructor
template <typename T>
void specifyType(); // Store type of initial GArray<T>
std::shared_ptr<GOrigin> m_priv;
std::shared_ptr<TypeHintBase> m_hint;
};
template <typename T>
bool GArrayU::holds() const{
GAPI_Assert(m_hint != nullptr);
using U = typename std::decay<T>::type;
return dynamic_cast<TypeHint<U>*>(m_hint.get()) != nullptr;
};
template <typename T>
void GArrayU::specifyType(){
m_hint.reset(new TypeHint<typename std::decay<T>::type>);
};
// This class represents a typed STL vector reference.
@ -239,7 +264,10 @@ public:
private:
static void VCTor(detail::VectorRef& vref) { vref.reset<T>(); }
void putDetails() {m_ref.setConstructFcn(&VCTor); }
void putDetails() {
m_ref.setConstructFcn(&VCTor);
m_ref.specifyType<T>();
}
detail::GArrayU m_ref;
};

21
modules/gapi/include/opencv2/gapi/gtransform.hpp
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@ -16,13 +16,16 @@
#include <opencv2/gapi/garg.hpp>
#include <opencv2/gapi/gtype_traits.hpp>
#include <opencv2/gapi/util/compiler_hints.hpp>
#include <opencv2/gapi/gcomputation.hpp>
namespace cv
{
struct GAPI_EXPORTS GTransform
{
using F = std::function<GArgs(const GArgs &)>;
// FIXME: consider another simplified
// class instead of GComputation
using F = std::function<GComputation()>;
std::string description;
F pattern;
@ -41,20 +44,22 @@ template <typename K, typename... Ins, typename Out>
struct TransHelper<K, std::tuple<Ins...>, Out>
{
template <typename Callable, int... IIs, int... OIs>
static GArgs invoke(Callable f, const GArgs &in_args, Seq<IIs...>, Seq<OIs...>)
static GComputation invoke(Callable f, Seq<IIs...>, Seq<OIs...>)
{
const auto r = tuple_wrap_helper<Out>::get(f(in_args.at(IIs).template get<Ins>()...));
return GArgs{GArg(std::get<OIs>(r))...};
const std::tuple<Ins...> ins;
const auto r = tuple_wrap_helper<Out>::get(f(std::get<IIs>(ins)...));
return GComputation(cv::GIn(std::get<IIs>(ins)...),
cv::GOut(std::get<OIs>(r)...));
}
static GArgs get_pattern(const GArgs &in_args)
static GComputation get_pattern()
{
return invoke(K::pattern, in_args, typename MkSeq<sizeof...(Ins)>::type(),
return invoke(K::pattern, typename MkSeq<sizeof...(Ins)>::type(),
typename MkSeq<std::tuple_size<typename tuple_wrap_helper<Out>::type>::value>::type());
}
static GArgs get_substitute(const GArgs &in_args)
static GComputation get_substitute()
{
return invoke(K::substitute, in_args, typename MkSeq<sizeof...(Ins)>::type(),
return invoke(K::substitute, typename MkSeq<sizeof...(Ins)>::type(),
typename MkSeq<std::tuple_size<typename tuple_wrap_helper<Out>::type>::value>::type());
}
};

122
modules/gapi/test/gapi_transform_tests.cpp
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@ -8,6 +8,9 @@
#include "test_precomp.hpp"
#include "opencv2/gapi/gtransform.hpp"
#include "opencv2/gapi/gtype_traits.hpp"
// explicit include to use GComputation::Priv
#include "api/gcomputation_priv.hpp"
namespace opencv_test
{
@ -68,6 +71,12 @@ GAPI_TRANSFORM(gmat_in_garr_out, <GArray<int>(GMat)>, "gmat_in_garr_out")
static GArray<int> substitute(GMat) { return {}; }
};
GAPI_TRANSFORM(gmat_gsc_garray_in_gmat2_out, <GMat2(GMat, GScalar, GArray<int>)>, "gmat_gsc_garray_in_gmat2_out")
{
static GMat2 pattern(GMat, GScalar, GArray<int>) { return {}; }
static GMat2 substitute(GMat, GScalar, GArray<int>) { return {}; }
};
} // anonymous namespace
TEST(KernelPackageTransform, CreatePackage)
@ -76,12 +85,16 @@ TEST(KernelPackageTransform, CreatePackage)
< gmat_in_gmat_out
, gmat2_in_gmat_out
, gmat2_in_gmat3_out
, gmatp_in_gmatp_out
, gsc_in_gmat_out
, gmat_in_gsc_out
, garr_in_gmat_out
, gmat_in_garr_out
, gmat_gsc_garray_in_gmat2_out
>();
auto tr = pkg.get_transformations();
EXPECT_EQ(5u, tr.size());
EXPECT_EQ(9u, tr.size());
}
TEST(KernelPackageTransform, Include)
@ -103,81 +116,74 @@ TEST(KernelPackageTransform, Combine)
EXPECT_EQ(2u, tr.size());
}
TEST(KernelPackageTransform, Pattern)
{
auto tr = gmat2_in_gmat3_out::transformation();
GMat a, b;
auto pattern = tr.pattern({cv::GArg(a), cv::GArg(b)});
// return type of '2gmat_in_gmat3_out' is GMat3
EXPECT_EQ(3u, pattern.size());
for (const auto& p : pattern)
{
EXPECT_NO_THROW(p.get<GMat>());
namespace {
template <typename T>
inline bool ProtoContainsT(const cv::GProtoArg &arg) {
return cv::GProtoArg::index_of<T>() == arg.index();
}
}
} // anonymous namespace
TEST(KernelPackageTransform, Substitute)
TEST(KernelPackageTransform, gmat_gsc_in_gmat_out)
{
auto tr = gmat2_in_gmat3_out::transformation();
GMat a, b;
auto subst = tr.substitute({cv::GArg(a), cv::GArg(b)});
auto tr = gmat_gsc_garray_in_gmat2_out::transformation();
EXPECT_EQ(3u, subst.size());
for (const auto& s : subst)
{
EXPECT_NO_THROW(s.get<GMat>());
}
}
template <typename Transformation, typename InType, typename OutType>
static void transformTest()
{
auto tr = Transformation::transformation();
InType in;
auto pattern = tr.pattern({cv::GArg(in)});
auto subst = tr.substitute({cv::GArg(in)});
auto check = [](const cv::GComputation &comp){
const auto &p = comp.priv();
EXPECT_EQ(3u, p.m_ins.size());
EXPECT_EQ(2u, p.m_outs.size());
EXPECT_EQ(1u, pattern.size());
EXPECT_EQ(1u, subst.size());
EXPECT_TRUE(ProtoContainsT<GMat>(p.m_ins[0]));
EXPECT_TRUE(ProtoContainsT<GScalar>(p.m_ins[1]));
EXPECT_TRUE(ProtoContainsT<cv::detail::GArrayU>(p.m_ins[2]));
EXPECT_TRUE(cv::util::get<cv::detail::GArrayU>(p.m_ins[2]).holds<int>());
EXPECT_FALSE(cv::util::get<cv::detail::GArrayU>(p.m_ins[2]).holds<char>());
auto checkOut = [](GArg& garg) {
EXPECT_TRUE(garg.kind == cv::detail::GTypeTraits<OutType>::kind);
EXPECT_NO_THROW(garg.get<OutType>());
EXPECT_TRUE(ProtoContainsT<GMat>(p.m_outs[0]));
EXPECT_TRUE(ProtoContainsT<GMat>(p.m_outs[1]));
};
checkOut(pattern[0]);
checkOut(subst[0]);
check(tr.pattern());
check(tr.substitute());
}
TEST(KernelPackageTransform, GMat)
TEST(KernelPackageTransform, gmat_in_garr_out)
{
transformTest<gmat_in_gmat_out, GMat, GMat>();
}
auto tr = gmat_in_garr_out::transformation();
TEST(KernelPackageTransform, GMatP)
{
transformTest<gmatp_in_gmatp_out, GMatP, GMatP>();
}
auto check = [](const cv::GComputation &comp){
const auto &p = comp.priv();
EXPECT_EQ(1u, p.m_ins.size());
EXPECT_EQ(1u, p.m_outs.size());
TEST(KernelPackageTransform, GScalarIn)
{
transformTest<gsc_in_gmat_out, GScalar, GMat>();
}
EXPECT_TRUE(ProtoContainsT<GMat>(p.m_ins[0]));
TEST(KernelPackageTransform, GScalarOut)
{
transformTest<gmat_in_gsc_out, GMat, GScalar>();
}
EXPECT_TRUE(ProtoContainsT<cv::detail::GArrayU>(p.m_outs[0]));
EXPECT_TRUE(cv::util::get<cv::detail::GArrayU>(p.m_outs[0]).holds<int>());
EXPECT_FALSE(cv::util::get<cv::detail::GArrayU>(p.m_outs[0]).holds<float>());
};
TEST(KernelPackageTransform, DISABLED_GArrayIn)
{
transformTest<garr_in_gmat_out, GArray<int>, GMat>();
check(tr.pattern());
check(tr.substitute());
}
TEST(KernelPackageTransform, DISABLED_GArrayOut)
TEST(KernelPackageTransform, garr_in_gmat_out)
{
transformTest<gmat_in_garr_out, GMat, GArray<int>>();
auto tr = garr_in_gmat_out::transformation();
auto check = [](const cv::GComputation &comp){
const auto &p = comp.priv();
EXPECT_EQ(1u, p.m_ins.size());
EXPECT_EQ(1u, p.m_outs.size());
EXPECT_TRUE(ProtoContainsT<cv::detail::GArrayU>(p.m_ins[0]));
EXPECT_TRUE(cv::util::get<cv::detail::GArrayU>(p.m_ins[0]).holds<int>());
EXPECT_FALSE(cv::util::get<cv::detail::GArrayU>(p.m_ins[0]).holds<bool>());
EXPECT_TRUE(ProtoContainsT<GMat>(p.m_outs[0]));
};
check(tr.pattern());
check(tr.substitute());
}
} // namespace opencv_test

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