(No such device),这通常表明指定的设备不存在或无法访问。以下是对该问题的详细分析和解决步骤: 1. vidioc_dqbuf 函数的作用和上下文 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,...
V4L2英文全称是Video for Linux2，它是专门为视频设备设计的内核驱动。在做视频的开发中，一般我们操控...
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...
【genius_platform软件平台开发】第六十四讲:Linux系统之V4L2视频驱动-VIDIOC_DQBUF出队列 x采样的帧缓存 mem VIDIOC_DQBUF v4l2 sed 缓存 应用层 【genius_platform软件平台开发】第六十一讲:Linux系统之V4L2视频驱动-VIDIOC_QBUF入队列 VIDIOC_QBUF入队列喜欢的可以加微信群:1. 概述2. 应用层3. 驱动层3.1 vb2_qbu...
[video4linux2,v4l2 @ 0xd2d270] ioctl(VIDIOC_DQBUF): No such device Input #0, video4linux2,v4l2, from '/dev/video2': Duration: N/A, bitrate: 147456 kb/s Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 kb/s, 30 fps, 30 tbr, 1000k tbn, ...
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:=/home/mateusz/.ros/log/d9cc3536-d7f1-11e6-b223-243c200a98cb...
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/...