[2/4]解决USB摄像头打开相机预览界面绿屏

liyujie

2025-08-28 d9927380ed7c8366f762049be9f3fee225860833

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ADD_SUBDIRECTORY(lib_json)
IF(JSONCPP_WITH_TESTS)
    ADD_SUBDIRECTORY(jsontestrunner)
    ADD_SUBDIRECTORY(test_lib_json)
ENDIF(JSONCPP_WITH_TESTS)