add move construct/assigns to cv::ocl main classes

- enables inline construct and assigns with r-values
- enables compiler-created default move
  construct/assigns
- includes test cases

modules/core/include/opencv2/core/ocl.hpp

@@ -74,6 +74,8 @@ public:
     explicit Device(void* d);
     Device(const Device& d);
     Device& operator = (const Device& d);
+    Device(Device&& d) CV_NOEXCEPT;
+    Device& operator = (Device&& d) CV_NOEXCEPT;
     CV_WRAP ~Device();
 
     void set(void* d);
@@ -250,6 +252,8 @@ public:
     ~Context();
     Context(const Context& c);
     Context& operator= (const Context& c);
+    Context(Context&& c) CV_NOEXCEPT;
+    Context& operator = (Context&& c) CV_NOEXCEPT;
 
     /** @deprecated */
     bool create();
@@ -302,6 +306,8 @@ public:
     ~Platform();
     Platform(const Platform& p);
     Platform& operator = (const Platform& p);
+    Platform(Platform&& p) CV_NOEXCEPT;
+    Platform& operator = (Platform&& p) CV_NOEXCEPT;
 
     void* ptr() const;
 
@@ -362,6 +368,8 @@ public:
     ~Queue();
     Queue(const Queue& q);
     Queue& operator = (const Queue& q);
+    Queue(Queue&& q) CV_NOEXCEPT;
+    Queue& operator = (Queue&& q) CV_NOEXCEPT;
 
     bool create(const Context& c=Context(), const Device& d=Device());
     void finish();
@@ -384,7 +392,7 @@ class CV_EXPORTS KernelArg
 public:
     enum { LOCAL=1, READ_ONLY=2, WRITE_ONLY=4, READ_WRITE=6, CONSTANT=8, PTR_ONLY = 16, NO_SIZE=256 };
     KernelArg(int _flags, UMat* _m, int wscale=1, int iwscale=1, const void* _obj=0, size_t _sz=0);
-    KernelArg();
+    KernelArg() CV_NOEXCEPT;
 
     static KernelArg Local(size_t localMemSize)
     { return KernelArg(LOCAL, 0, 1, 1, 0, localMemSize); }
@@ -428,6 +436,8 @@ public:
     ~Kernel();
     Kernel(const Kernel& k);
     Kernel& operator = (const Kernel& k);
+    Kernel(Kernel&& k) CV_NOEXCEPT;
+    Kernel& operator = (Kernel&& k) CV_NOEXCEPT;
 
     bool empty() const;
     bool create(const char* kname, const Program& prog);
@@ -502,8 +512,9 @@ public:
     Program(const ProgramSource& src,
             const String& buildflags, String& errmsg);
     Program(const Program& prog);
-
     Program& operator = (const Program& prog);
+    Program(Program&& prog) CV_NOEXCEPT;
+    Program& operator = (Program&& prog) CV_NOEXCEPT;
     ~Program();
 
     bool create(const ProgramSource& src,
@@ -551,6 +562,8 @@ public:
     ~ProgramSource();
     ProgramSource(const ProgramSource& prog);
     ProgramSource& operator = (const ProgramSource& prog);
+    ProgramSource(ProgramSource&& prog) CV_NOEXCEPT;
+    ProgramSource& operator = (ProgramSource&& prog) CV_NOEXCEPT;
 
     const String& source() const; // deprecated
     hash_t hash() const; // deprecated
@@ -623,6 +636,8 @@ public:
 
     PlatformInfo(const PlatformInfo& i);
     PlatformInfo& operator =(const PlatformInfo& i);
+    PlatformInfo(PlatformInfo&& i) CV_NOEXCEPT;
+    PlatformInfo& operator = (PlatformInfo&& i) CV_NOEXCEPT;
 
     String name() const;
     String vendor() const;
@@ -683,7 +698,7 @@ CV_EXPORTS void buildOptionsAddMatrixDescription(String& buildOptions, const Str
 class CV_EXPORTS Image2D
 {
 public:
-    Image2D();
+    Image2D() CV_NOEXCEPT;
 
     /**
     @param src UMat object from which to get image properties and data
@@ -696,6 +711,8 @@ public:
     ~Image2D();
 
     Image2D & operator = (const Image2D & i);
+    Image2D(Image2D &&) CV_NOEXCEPT;
+    Image2D &operator=(Image2D &&) CV_NOEXCEPT;
 
     /** Indicates if creating an aliased image should succeed.
     Depends on the underlying platform and the dimensions of the UMat.

modules/core/src/ocl.cpp

@@ -1480,6 +1480,23 @@ Platform& Platform::operator = (const Platform& pl)
     return *this;
 }
 
+Platform::Platform(Platform&& pl) CV_NOEXCEPT
+{
+    p = pl.p;
+    pl.p = nullptr;
+}
+
+Platform& Platform::operator = (Platform&& pl) CV_NOEXCEPT
+{
+    if (this != &pl) {
+        if(p)
+            p->release();
+        p = pl.p;
+        pl.p = nullptr;
+    }
+    return *this;
+}
+
 void* Platform::ptr() const
 {
     return p ? p->handle : 0;
@@ -1706,6 +1723,23 @@ Device& Device::operator = (const Device& d)
     return *this;
 }
 
+Device::Device(Device&& d) CV_NOEXCEPT
+{
+    p = d.p;
+    d.p = nullptr;
+}
+
+Device& Device::operator = (Device&& d) CV_NOEXCEPT
+{
+    if (this != &d) {
+        if(p)
+            p->release();
+        p = d.p;
+        d.p = nullptr;
+    }
+    return *this;
+}
+
 Device::~Device()
 {
     if(p)
@@ -2919,6 +2953,23 @@ Context& Context::operator = (const Context& c)
     return *this;
 }
 
+Context::Context(Context&& c) CV_NOEXCEPT
+{
+    p = c.p;
+    c.p = nullptr;
+}
+
+Context& Context::operator = (Context&& c) CV_NOEXCEPT
+{
+    if (this != &c) {
+        if(p)
+            p->release();
+        p = c.p;
+        c.p = nullptr;
+    }
+    return *this;
+}
+
 void* Context::ptr() const
 {
     return p == NULL ? NULL : p->handle;
@@ -3260,6 +3311,23 @@ Queue& Queue::operator = (const Queue& q)
     return *this;
 }
 
+Queue::Queue(Queue&& q) CV_NOEXCEPT
+{
+    p = q.p;
+    q.p = nullptr;
+}
+
+Queue& Queue::operator = (Queue&& q) CV_NOEXCEPT
+{
+    if (this != &q) {
+        if(p)
+            p->release();
+        p = q.p;
+        q.p = nullptr;
+    }
+    return *this;
+}
+
 Queue::~Queue()
 {
     if(p)
@@ -3315,7 +3383,7 @@ static cl_command_queue getQueue(const Queue& q)
 
 /////////////////////////////////////////// KernelArg /////////////////////////////////////////////
 
-KernelArg::KernelArg()
+KernelArg::KernelArg() CV_NOEXCEPT
     : flags(0), m(0), obj(0), sz(0), wscale(1), iwscale(1)
 {
 }
@@ -3493,6 +3561,23 @@ Kernel& Kernel::operator = (const Kernel& k)
     return *this;
 }
 
+Kernel::Kernel(Kernel&& k) CV_NOEXCEPT
+{
+    p = k.p;
+    k.p = nullptr;
+}
+
+Kernel& Kernel::operator = (Kernel&& k) CV_NOEXCEPT
+{
+    if (this != &k) {
+        if(p)
+            p->release();
+        p = k.p;
+        k.p = nullptr;
+    }
+    return *this;
+}
+
 Kernel::~Kernel()
 {
     if(p)
@@ -4091,6 +4176,23 @@ ProgramSource& ProgramSource::operator = (const ProgramSource& prog)
     return *this;
 }
 
+ProgramSource::ProgramSource(ProgramSource&& prog) CV_NOEXCEPT
+{
+    p = prog.p;
+    prog.p = nullptr;
+}
+
+ProgramSource& ProgramSource::operator = (ProgramSource&& prog) CV_NOEXCEPT
+{
+    if (this != &prog) {
+        if(p)
+            p->release();
+        p = prog.p;
+        prog.p = nullptr;
+    }
+    return *this;
+}
+
 const String& ProgramSource::source() const
 {
     CV_Assert(p);
@@ -4583,6 +4685,23 @@ Program& Program::operator = (const Program& prog)
     return *this;
 }
 
+Program::Program(Program&& prog) CV_NOEXCEPT
+{
+    p = prog.p;
+    prog.p = nullptr;
+}
+
+Program& Program::operator = (Program&& prog) CV_NOEXCEPT
+{
+    if (this != &prog) {
+        if(p)
+            p->release();
+        p = prog.p;
+        prog.p = nullptr;
+    }
+    return *this;
+}
+
 Program::~Program()
 {
     if(p)
@@ -6644,6 +6763,23 @@ PlatformInfo& PlatformInfo::operator =(const PlatformInfo& i)
     return *this;
 }
 
+PlatformInfo::PlatformInfo(PlatformInfo&& i) CV_NOEXCEPT
+{
+    p = i.p;
+    i.p = nullptr;
+}
+
+PlatformInfo& PlatformInfo::operator = (PlatformInfo&& i) CV_NOEXCEPT
+{
+    if (this != &i) {
+        if(p)
+            p->release();
+        p = i.p;
+        i.p = nullptr;
+    }
+    return *this;
+}
+
 int PlatformInfo::deviceNumber() const
 {
     return p ? (int)p->devices.size() : 0;
@@ -7184,7 +7320,7 @@ struct Image2D::Impl
     cl_mem handle;
 };
 
-Image2D::Image2D()
+Image2D::Image2D() CV_NOEXCEPT
 {
     p = NULL;
 }
@@ -7242,6 +7378,23 @@ Image2D & Image2D::operator = (const Image2D & i)
     return *this;
 }
 
+Image2D::Image2D(Image2D&& i) CV_NOEXCEPT
+{
+    p = i.p;
+    i.p = nullptr;
+}
+
+Image2D& Image2D::operator = (Image2D&& i) CV_NOEXCEPT
+{
+    if (this != &i) {
+        if (p)
+            p->release();
+        p = i.p;
+        i.p = nullptr;
+    }
+    return *this;
+}
+
 Image2D::~Image2D()
 {
     if (p)

modules/core/src/ocl_disabled.impl.hpp

@@ -38,6 +38,8 @@ Device::Device() : p(NULL) { }
 Device::Device(void* d) : p(NULL) { OCL_NOT_AVAILABLE(); }
 Device::Device(const Device& d) : p(NULL) { }
 Device& Device::operator=(const Device& d) { return *this; }
+Device::Device(Device&&) CV_NOEXCEPT : p(NULL) { }
+Device& Device::operator=(Device&&) CV_NOEXCEPT { return *this; }
 Device::~Device() { }
 
 void Device::set(void* d) { OCL_NOT_AVAILABLE(); }
@@ -152,6 +154,8 @@ Context::Context(int dtype) : p(NULL) { }
 Context::~Context() { }
 Context::Context(const Context& c) : p(NULL) { }
 Context& Context::operator=(const Context& c) { return *this; }
+Context::Context(Context&&) CV_NOEXCEPT : p(NULL) { }
+Context& Context::operator=(Context&&) CV_NOEXCEPT { return *this; }
 
 bool Context::create() { return false; }
 bool Context::create(int dtype) { return false; }
@@ -182,6 +186,8 @@ Platform::Platform() : p(NULL) { }
 Platform::~Platform() { }
 Platform::Platform(const Platform&) : p(NULL) { }
 Platform& Platform::operator=(const Platform&) { return *this; }
+Platform::Platform(Platform&&) CV_NOEXCEPT : p(NULL) { }
+Platform& Platform::operator=(Platform&&) CV_NOEXCEPT { return *this; }
 
 void* Platform::ptr() const { return NULL; }
 
@@ -203,6 +209,8 @@ Queue::Queue(const Context& c, const Device& d) : p(NULL) { OCL_NOT_AVAILABLE();
 Queue::~Queue() { }
 Queue::Queue(const Queue& q) {}
 Queue& Queue::operator=(const Queue& q) { return *this; }
+Queue::Queue(Queue&&) CV_NOEXCEPT : p(NULL) { }
+Queue& Queue::operator=(Queue&&) CV_NOEXCEPT { return *this; }
 
 bool Queue::create(const Context& c, const Device& d) { OCL_NOT_AVAILABLE(); }
 void Queue::finish() {}
@@ -218,7 +226,7 @@ Queue& Queue::getDefault()
 const Queue& Queue::getProfilingQueue() const { OCL_NOT_AVAILABLE(); }
 
 
-KernelArg::KernelArg()
+KernelArg::KernelArg() CV_NOEXCEPT
     : flags(0), m(0), obj(0), sz(0), wscale(1), iwscale(1)
 {
 }
@@ -241,6 +249,8 @@ Kernel::Kernel(const char* kname, const ProgramSource& prog, const String& build
 Kernel::~Kernel() { }
 Kernel::Kernel(const Kernel& k) : p(NULL) { }
 Kernel& Kernel::operator=(const Kernel& k) { return *this; }
+Kernel::Kernel(Kernel&&) CV_NOEXCEPT : p(NULL) { }
+Kernel& Kernel::operator=(Kernel&&) CV_NOEXCEPT { return *this; }
 
 bool Kernel::empty() const { return true; }
 bool Kernel::create(const char* kname, const Program& prog) { OCL_NOT_AVAILABLE(); }
@@ -268,6 +278,8 @@ Program::Program() : p(NULL) { }
 Program::Program(const ProgramSource& src, const String& buildflags, String& errmsg) : p(NULL) { OCL_NOT_AVAILABLE(); }
 Program::Program(const Program& prog) : p(NULL) { }
 Program& Program::operator=(const Program& prog) { return *this; }
+Program::Program(Program&&) CV_NOEXCEPT : p(NULL) { }
+Program& Program::operator=(Program&&) CV_NOEXCEPT { return *this; }
 Program::~Program() { }
 
 bool Program::create(const ProgramSource& src, const String& buildflags, String& errmsg) { OCL_NOT_AVAILABLE(); }
@@ -290,6 +302,8 @@ ProgramSource::ProgramSource(const char* prog) : p(NULL) { }
 ProgramSource::~ProgramSource() { }
 ProgramSource::ProgramSource(const ProgramSource& prog) : p(NULL) { }
 ProgramSource& ProgramSource::operator=(const ProgramSource& prog) { return *this; }
+ProgramSource::ProgramSource(ProgramSource&&) CV_NOEXCEPT : p(NULL) { }
+ProgramSource& ProgramSource::operator=(ProgramSource&&) CV_NOEXCEPT { return *this; }
 
 const String& ProgramSource::source() const { OCL_NOT_AVAILABLE(); }
 ProgramSource::hash_t ProgramSource::hash() const { OCL_NOT_AVAILABLE(); }
@@ -304,6 +318,8 @@ PlatformInfo::~PlatformInfo() { }
 
 PlatformInfo::PlatformInfo(const PlatformInfo& i) : p(NULL) { }
 PlatformInfo& PlatformInfo::operator=(const PlatformInfo& i) { return *this; }
+PlatformInfo::PlatformInfo(PlatformInfo&&) CV_NOEXCEPT : p(NULL) { }
+PlatformInfo& PlatformInfo::operator=(PlatformInfo&&) CV_NOEXCEPT { return *this; }
 
 String PlatformInfo::name() const { OCL_NOT_AVAILABLE(); }
 String PlatformInfo::vendor() const { OCL_NOT_AVAILABLE(); }
@@ -341,11 +357,13 @@ int predictOptimalVectorWidthMax(InputArray src1, InputArray src2, InputArray sr
 void buildOptionsAddMatrixDescription(String& buildOptions, const String& name, InputArray _m) { OCL_NOT_AVAILABLE(); }
 
 
-Image2D::Image2D() : p(NULL) { }
+Image2D::Image2D() CV_NOEXCEPT : p(NULL) { }
 Image2D::Image2D(const UMat &src, bool norm, bool alias) { OCL_NOT_AVAILABLE(); }
 Image2D::Image2D(const Image2D & i) : p(NULL) { OCL_NOT_AVAILABLE(); }
 Image2D::~Image2D() { }
 Image2D& Image2D::operator=(const Image2D & i) { return *this; }
+Image2D::Image2D(Image2D&&) CV_NOEXCEPT : p(NULL) { }
+Image2D& Image2D::operator=(Image2D&&) CV_NOEXCEPT { return *this; }
 
 /* static */ bool Image2D::canCreateAlias(const UMat &u) { OCL_NOT_AVAILABLE(); }
 /* static */ bool Image2D::isFormatSupported(int depth, int cn, bool norm) { OCL_NOT_AVAILABLE(); }

modules/core/test/ocl/test_opencl.cpp

@@ -127,4 +127,120 @@ TEST(OpenCL, support_SPIR_programs)
     testOpenCLKernel(k);
 }
 
+TEST(OpenCL, move_construct_assign)
+{
+    cv::ocl::Context ctx1 = cv::ocl::Context::getDefault();
+    if (!ctx1.ptr())
+    {
+        throw cvtest::SkipTestException("OpenCL is not available");
+    }
+    void* const ctx_ptr = ctx1.ptr();
+    cv::ocl::Context ctx2(std::move(ctx1));
+    ASSERT_EQ(ctx1.ptr(), nullptr);
+    ASSERT_EQ(ctx2.ptr(), ctx_ptr);
+    cv::ocl::Context ctx3 = std::move(ctx2);
+    ASSERT_EQ(ctx2.ptr(), nullptr);
+    ASSERT_EQ(ctx3.ptr(), ctx_ptr);
+
+    cv::ocl::Platform pl1 = cv::ocl::Platform::getDefault();
+    void* const pl_ptr = pl1.ptr();
+    cv::ocl::Platform pl2(std::move(pl1));
+    ASSERT_EQ(pl1.ptr(), nullptr);
+    ASSERT_EQ(pl2.ptr(), pl_ptr);
+    cv::ocl::Platform pl3 = std::move(pl2);
+    ASSERT_EQ(pl2.ptr(), nullptr);
+    ASSERT_EQ(pl3.ptr(), pl_ptr);
+
+    std::vector<cv::ocl::PlatformInfo> platformInfos;
+    cv::ocl::getPlatfomsInfo(platformInfos);
+    const cv::String pi_name = platformInfos[0].name();
+    cv::ocl::PlatformInfo pinfo2(std::move(platformInfos[0]));
+    ASSERT_EQ(platformInfos[0].name(), cv::String());
+    ASSERT_EQ(pinfo2.name(), pi_name);
+    cv::ocl::PlatformInfo pinfo3 = std::move(pinfo2);
+    ASSERT_EQ(pinfo2.name(), cv::String());
+    ASSERT_EQ(pinfo3.name(), pi_name);
+
+    cv::ocl::Queue q1 = cv::ocl::Queue::getDefault();
+    void* const q_ptr = q1.ptr();
+    cv::ocl::Queue q2(std::move(q1));
+    ASSERT_EQ(q1.ptr(), nullptr);
+    ASSERT_EQ(q2.ptr(), q_ptr);
+    cv::ocl::Queue q3 = std::move(q2);
+    ASSERT_EQ(q2.ptr(), nullptr);
+    ASSERT_EQ(q3.ptr(), q_ptr);
+
+    cv::ocl::Device d1 = cv::ocl::Device::getDefault();
+    if (!d1.compilerAvailable())
+    {
+        throw cvtest::SkipTestException("OpenCL compiler is not available");
+    }
+    void* const d_ptr = d1.ptr();
+    cv::ocl::Device d2(std::move(d1));
+    ASSERT_EQ(d1.ptr(), nullptr);
+    ASSERT_EQ(d2.ptr(), d_ptr);
+    cv::ocl::Device d3 = std::move(d2);
+    ASSERT_EQ(d2.ptr(), nullptr);
+    ASSERT_EQ(d3.ptr(), d_ptr);
+
+    if (d3.imageSupport()) {
+        cv::UMat umat1 = cv::UMat::ones(640, 480, CV_32FC1);
+        cv::ocl::Image2D img1(umat1);
+        void *const img_ptr = img1.ptr();
+        cv::ocl::Image2D img2(std::move(img1));
+        ASSERT_EQ(img1.ptr(), nullptr);
+        ASSERT_EQ(img2.ptr(), img_ptr);
+        cv::ocl::Image2D img3 = std::move(img2);
+        ASSERT_EQ(img2.ptr(), nullptr);
+        ASSERT_EQ(img3.ptr(), img_ptr);
+    }
+
+    static const char* opencl_kernel_src =
+"__kernel void test_kernel(__global const uchar* src, int src_step, int src_offset,\n"
+"                          __global uchar* dst, int dst_step, int dst_offset, int dst_rows, int dst_cols,\n"
+"                          int c)\n"
+"{\n"
+"   int x = get_global_id(0);\n"
+"   int y = get_global_id(1);\n"
+"   if (x < dst_cols && y < dst_rows)\n"
+"   {\n"
+"       int src_idx = y * src_step + x + src_offset;\n"
+"       int dst_idx = y * dst_step + x + dst_offset;\n"
+"       dst[dst_idx] = src[src_idx] + c;\n"
+"   }\n"
+"}\n";
+    cv::String module_name; // empty to disable OpenCL cache
+    cv::ocl::ProgramSource ps1(module_name, "move_construct_assign", opencl_kernel_src, "");
+    cv::ocl::ProgramSource::Impl* const ps_ptr = ps1.getImpl();
+    cv::ocl::ProgramSource ps2(std::move(ps1));
+    ASSERT_EQ(ps1.getImpl(), nullptr);
+    ASSERT_EQ(ps2.getImpl(), ps_ptr);
+    cv::ocl::ProgramSource ps3 = std::move(ps2);
+    ASSERT_EQ(ps2.getImpl(), nullptr);
+    ASSERT_EQ(ps3.getImpl(), ps_ptr);
+
+    cv::String errmsg;
+    cv::ocl::Program prog1(ps3, "", errmsg);
+    void* const prog_ptr = prog1.ptr();
+    ASSERT_NE(prog_ptr, nullptr);
+    cv::ocl::Program prog2(std::move(prog1));
+    ASSERT_EQ(prog1.ptr(), nullptr);
+    ASSERT_EQ(prog2.ptr(), prog_ptr);
+    cv::ocl::Program prog3 = std::move(prog2);
+    ASSERT_EQ(prog2.ptr(), nullptr);
+    ASSERT_EQ(prog3.ptr(), prog_ptr);
+
+    cv::ocl::Kernel k1("test_kernel", prog3);
+    void* const k_ptr = k1.ptr();
+    ASSERT_NE(k_ptr, nullptr);
+    cv::ocl::Kernel k2(std::move(k1));
+    ASSERT_EQ(k1.ptr(), nullptr);
+    ASSERT_EQ(k2.ptr(), k_ptr);
+    cv::ocl::Kernel k3 = std::move(k2);
+    ASSERT_EQ(k2.ptr(), nullptr);
+    ASSERT_EQ(k3.ptr(), k_ptr);
+
+    testOpenCLKernel(k3);
+}
+
 }} // namespace