Stream On/Off Process for UVC Devices on Linux
1. Introduction This article shares the execution process of the stream on and off for UVC devices under Linux. It focuses on the differences between isoc and bulk modes. 2. Process Ioctl Registration and Execution Process The application layer calls ioctl int ioctl(int fd, VIDIOC_STREAMON, const int *argp) Ultimately, it calls the file’s ->unlocked_ioctl where … Read more