diff options
| -rw-r--r-- | src/multimedia/video/qvideoframeconversionhelper.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/src/multimedia/video/qvideoframeconversionhelper.cpp b/src/multimedia/video/qvideoframeconversionhelper.cpp index ab226d0d8..30ca146e2 100644 --- a/src/multimedia/video/qvideoframeconversionhelper.cpp +++ b/src/multimedia/video/qvideoframeconversionhelper.cpp @@ -4,6 +4,8 @@ #include "qvideoframeconversionhelper_p.h" #include "qrgb.h" +#include <mutex> + QT_BEGIN_NAMESPACE #define CLAMP(n) (n > 255 ? 255 : (n < 0 ? 0 : n)) @@ -552,11 +554,9 @@ static void qInitConvertFuncsAsm() VideoFrameConvertFunc qConverterForFormat(QVideoFrameFormat::PixelFormat format) { - static bool initAsmFuncsDone = false; - if (!initAsmFuncsDone) { - qInitConvertFuncsAsm(); - initAsmFuncsDone = true; - } + static std::once_flag once; + std::call_once(once, &qInitConvertFuncsAsm); + VideoFrameConvertFunc convert = qConvertFuncs[format]; return convert; } |