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...
ioctl(VIDIOC_G_INPUT): inappropriate ioctl 错误表明,在尝试使用 ioctl 系统调用并传递 VIDIOC_G_INPUT 命令时,该命令对当前设备或上下文来说是不适当的。简单来说,就是尝试执行了一个不被当前设备支持的操作。 2. 可能的原因 设备不支持:尝试使用的视频设备(如摄像头)可能不支持 VIDIOC_G_INPUT 命令。这通常...
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