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samples: fix build without threading support

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This commit is contained in:
Alexander Alekhin 2021-10-19 09:28:12 +00:00
parent bd0732b1d0
commit f77fdc0ce8
2 changed files with 11 additions and 6 deletions
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1
samples/CMakeLists.txt
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@ -114,6 +114,7 @@ else()
find_package(Threads)
endif()
if((TARGET Threads::Threads OR HAVE_THREADS) AND NOT OPENCV_EXAMPLES_DISABLE_THREADS)
set(HAVE_THREADS 1)
add_definitions(-DHAVE_THREADS=1)
endif()

16
samples/dnn/object_detection.cpp
View File

@ -5,7 +5,11 @@
#include <opencv2/imgproc.hpp>
#include <opencv2/highgui.hpp>
#ifdef CV_CXX11
#if defined(CV_CXX11) && defined(HAVE_THREADS)
#define USE_THREADS 1
#endif
#ifdef USE_THREADS
#include <mutex>
#include <thread>
#include <queue>
@ -51,7 +55,7 @@ void drawPred(int classId, float conf, int left, int top, int right, int bottom,
void callback(int pos, void* userdata);
#ifdef CV_CXX11
#ifdef USE_THREADS
template <typename T>
class QueueFPS : public std::queue<T>
{
@ -101,7 +105,7 @@ private:
TickMeter tm;
std::mutex mutex;
};
#endif // CV_CXX11
#endif // USE_THREADS
int main(int argc, char** argv)
{
@ -166,7 +170,7 @@ int main(int argc, char** argv)
else
cap.open(parser.get<int>("device"));
#ifdef CV_CXX11
#ifdef USE_THREADS
bool process = true;
// Frames capturing thread
@ -266,7 +270,7 @@ int main(int argc, char** argv)
framesThread.join();
processingThread.join();
#else // CV_CXX11
#else // USE_THREADS
if (async)
CV_Error(Error::StsNotImplemented, "Asynchronous forward is supported only with Inference Engine backend.");
@ -297,7 +301,7 @@ int main(int argc, char** argv)
imshow(kWinName, frame);
}
#endif // CV_CXX11
#endif // USE_THREADS
return 0;
}