标签：mjepg mjpg make opencv 报错 streamer plugins input

I've experienced the same error building on a Raspberry Pi running raspbian-strech. It seems to be a namespace issue. Changing;

CV_IMWRITE_JPEG_QUALITY

to

cv::IMWRITE_JPEG_QUALITY

in line 408 of file

mjpg-streamer/mjpg-streamer-experimental/plugins/input_opencv/input_opencv.cpp

seemed to clear up this issue and result in a successful build. See here for a pretty similar issue.

Here's my command line error from the build.

[ 31%] Building CXX object plugins/input_opencv/CMakeFiles/input_opencv.dir/input_opencv.cpp.o /home/pi/mjpg-streamer/mjpg-streamer-experimental/plugins/input_opencv/input_opencv.cpp:86:5: warning: invalid suffix on literal; C++11 requires a space between literal and string macro [-Wliteral-suffix] " Help for input plugin..: "INPUT_PLUGIN_NAME"\n" \ ^ /home/pi/mjpg-streamer/mjpg-streamer-experimental/plugins/input_opencv/input_opencv.cpp: In function ‘void* worker_thread(void*)’: /home/pi/mjpg-streamer/mjpg-streamer-experimental/plugins/input_opencv/input_opencv.cpp:408:34: error: ‘CV_IMWRITE_JPEG_QUALITY’ was not declared in this scope compression_params.push_back(CV_IMWRITE_JPEG_QUALITY); ^~~~~~~~~~~~~~~~~~~~~~~ plugins/input_opencv/CMakeFiles/input_opencv.dir/build.make:62: recipe for target 'plugins/input_opencv/CMakeFiles/input_opencv.dir/input_opencv.cpp.o' failed make[3]: *** [plugins/input_opencv/CMakeFiles/input_opencv.dir/input_opencv.cpp.o] Error 1 make[3]: Leaving directory '/home/pi/mjpg-streamer/mjpg-streamer-experimental/_build' CMakeFiles/Makefile2:237: recipe for target 'plugins/input_opencv/CMakeFiles/input_opencv.dir/all' failed make[2]: *** [plugins/input_opencv/CMakeFiles/input_opencv.dir/all] Error 2 make[2]: Leaving directory '/home/pi/mjpg-streamer/mjpg-streamer-experimental/_build' Makefile:127: recipe for target 'all' failed make[1]: *** [all] Error 2 make[1]: Leaving directory '/home/pi/mjpg-streamer/mjpg-streamer-experimental/_build' Makefile:17: recipe for target 'all' failed make: *** [all] Error 2

标签：mjepg,mjpg,make,opencv,报错,streamer,plugins,input
来源： https://www.cnblogs.com/jeroen/p/12218262.html

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