用户就可以在用户程序中使用ioctl函数来控制设备的I/O通道。
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used) [video4linux2,v4l2 @ 0xd2d270] ioctl(VIDIOC_DQBUF): No such device ...
What has really happened is that the longioctl()function has been moved intodrivers/media/video/videodev.c. This code handles the movement of data between user and kernel space and dispatches individualioctl()calls to the driver. To use it, the driver need only usevideo_ioctl2()as itsioctl...
Biotransformation of long‐chain fatty acids into medium‐chain α,ω‐dicarboxylic acids or ω‐aminocarboxylic acids could be achieved with biocatalysts... J Song,J Lee,UT Bornscheuer,... - 《Advanced Synthesis & Catalysis》 被引量: 39发表: 2014年 Microbial Synthesis of Medium-Chain α,ω-...