isPipelinePlaying  134 modules/videoio/src/cap_gstreamer.cpp     bool isPipelinePlaying();
isPipelinePlaying  189 modules/videoio/src/cap_gstreamer.cpp     if (isPipelinePlaying())
isPipelinePlaying  216 modules/videoio/src/cap_gstreamer.cpp     if(!this->isPipelinePlaying())
isPipelinePlaying  936 modules/videoio/src/cap_gstreamer.cpp     bool wasPlaying = this->isPipelinePlaying();