struct v4l2_buffer { __u32 index; //缓存编号 enum v4l2_buf_type type; //视频捕获模式 __u32 bytesused; //缓存已使用空间大小 __u32 flags; //缓存当前状态 /* flags 为缓存当前状态(常见值有 V4L2_BUF_FLAG_MAPPED | V4L2_BUF_FLAG_QUEUED | V4L2_BUF_FLAG_DONE,分别代表当前缓存已经 映射、...
char name[V4L2_DEVICE_NAME_SIZE]; void (*notify)(struct v4l2_subdev *sd, unsigned int notification, void *arg); struct v4l2_ctrl_handler *ctrl_handler; struct v4l2_prio_state prio; struct mutex ioctl_lock; struct kref ref; void (*release)(struct v4l2_device *v4l2_dev); }; [cpp]...
V4L2 学习三---> 常用命令 2014-01-17 13:44 − V4L2(Video For Linux Two) 一、打开视频设备 打开视频设备非常简单,在V4L2中,视频设备被看做一个文件。使用open函数打开这个设备: 1. 用非阻塞模式打开摄像头设备int cameraFd;cameraFd = open(... great贾子007 0 982 关于Linux的视频编程(v4l2编程...