mirror of
https://github.com/opencv/opencv.git
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135 lines
3.3 KiB
C++
135 lines
3.3 KiB
C++
#ifndef CV2_UTIL_HPP
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#define CV2_UTIL_HPP
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#include "cv2.hpp"
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#include "opencv2/core.hpp"
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#include "opencv2/core/utils/tls.hpp"
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#include <vector>
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#include <string>
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//======================================================================================================================
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bool isPythonBindingsDebugEnabled();
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void emit_failmsg(PyObject * exc, const char *msg);
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int failmsg(const char *fmt, ...);
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PyObject* failmsgp(const char *fmt, ...);
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//======================================================================================================================
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class PyAllowThreads
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{
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public:
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PyAllowThreads() : _state(PyEval_SaveThread()) {}
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~PyAllowThreads()
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{
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PyEval_RestoreThread(_state);
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}
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private:
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PyThreadState* _state;
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};
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class PyEnsureGIL
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{
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public:
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PyEnsureGIL() : _state(PyGILState_Ensure()) {}
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~PyEnsureGIL()
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{
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PyGILState_Release(_state);
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}
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private:
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PyGILState_STATE _state;
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};
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/**
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* Light weight RAII wrapper for `PyObject*` owning references.
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* In comparisson to C++11 `std::unique_ptr` with custom deleter, it provides
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* implicit conversion functions that might be useful to initialize it with
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* Python functions those returns owning references through the `PyObject**`
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* e.g. `PyErr_Fetch` or directly pass it to functions those want to borrow
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* reference to object (doesn't extend object lifetime) e.g. `PyObject_Str`.
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*/
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class PySafeObject
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{
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public:
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PySafeObject() : obj_(NULL) {}
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explicit PySafeObject(PyObject* obj) : obj_(obj) {}
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~PySafeObject()
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{
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Py_CLEAR(obj_);
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}
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operator PyObject*()
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{
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return obj_;
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}
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operator PyObject**()
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{
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return &obj_;
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}
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PyObject* release()
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{
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PyObject* obj = obj_;
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obj_ = NULL;
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return obj;
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}
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private:
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PyObject* obj_;
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// Explicitly disable copy operations
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PySafeObject(const PySafeObject*); // = delete
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PySafeObject& operator=(const PySafeObject&); // = delete
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};
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//======================================================================================================================
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extern PyObject* opencv_error;
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void pyRaiseCVException(const cv::Exception &e);
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#define ERRWRAP2(expr) \
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try \
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{ \
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PyAllowThreads allowThreads; \
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expr; \
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} \
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catch (const cv::Exception &e) \
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{ \
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pyRaiseCVException(e); \
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return 0; \
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} \
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catch (const std::exception &e) \
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{ \
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PyErr_SetString(opencv_error, e.what()); \
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return 0; \
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} \
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catch (...) \
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{ \
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PyErr_SetString(opencv_error, "Unknown C++ exception from OpenCV code"); \
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return 0; \
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}
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//======================================================================================================================
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extern cv::TLSData<std::vector<std::string> > conversionErrorsTLS;
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inline void pyPrepareArgumentConversionErrorsStorage(std::size_t size)
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{
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std::vector<std::string>& conversionErrors = conversionErrorsTLS.getRef();
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conversionErrors.clear();
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conversionErrors.reserve(size);
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}
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void pyRaiseCVOverloadException(const std::string& functionName);
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void pyPopulateArgumentConversionErrors();
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//======================================================================================================================
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PyObject *pycvRedirectError(PyObject*, PyObject *args, PyObject *kw);
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#endif // CV2_UTIL_HPP
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