vidioc_dqbuf 是V4L2 API的一部分,用于视频捕获。它允许应用程序从驱动程序的缓冲区队列中检索一个已捕获数据的缓冲区。这是视频捕获过程中的一个关键步骤,通常在启动视频捕获后,通过循环调用此函数来获取连续的帧。 2. 错误码19(no such device)代表的具体含义 ...
what(): VIDIOC_DQBUF error 19, No such device [camera/driver-2] process has finished cleanly log file: /home/mateusz/.ros/log/3f841286-da4f-11e6-a22c-243c200a98cb/camera-driver-2*.log [camera/camera_nodelet_manager-1] process has died [pid 2852, exit code -6, cmd /opt/ros/...
./cpp-pointcloud terminate called after throwing an instance of 'std::runtime_error' what(): VIDIOC_DQBUF error 19, No such device Aborted (core dumped) ./cpp-tutorial-2-streams There are 1 connected RealSense devices. Using device 0, an Intel RealSense SR300 Serial number: 614205002887 Fi...
* @is_multiplanar: set if buffer type is multiplanar * @is_output: set if buffer type is output * @copy_timestamp: set if vb2-core should set timestamps * @last_buffer_dequeued: used in poll() and DQBUF to immediately return if the * last decoded buffer was already dequeued. Set ...
[video4linux2,v4l2 @ 0xd2d270] ioctl(VIDIOC_DQBUF): No such device /dev/video2: No such device frame= 0 fps=0.0 q=-1.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed= 0x video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown ...
what(): VIDIOC_DQBUF error 19, No such device [camera/driver-2] process has finished cleanly log file: /home/mateusz/.ros/log/3f841286-da4f-11e6-a22c-243c200a98cb/camera-driver-2*.log [camera/camera_nodelet_manager-1] process has died [pid 2852, exit code -6, cmd /opt/ros/...
terminate called after throwing an instance of 'std::runtime_error' what(): VIDIOC_DQBUF error 19, No such device [camera/camera_nodelet_manager-1] process has died [pid 2318, exit code -6, cmd /opt/ros/kinetic/lib/nodelet/nodelet manager __name:=camera_nodelet_manager __log...