6.2.2.15. VIDEO_TRY_COMMAND

6.2.2.15.1. Name

VIDEO_TRY_COMMAND

注意

This ioctl is deprecated.

6.2.2.15.2. Synopsis

int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd)

6.2.2.15.3. Arguments

int fd

File descriptor returned by a previous call to open().

int request

Equals VIDEO_TRY_COMMAND for this command.

struct video_command *cmd

Try a decoder command.

6.2.2.15.4. Description

This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this ioctl has been replaced by the VIDIOC_TRY_DECODER_CMD ioctl.

This ioctl tries a decoder command. The video_command struct is a subset of the v4l2_decoder_cmd struct, so refer to the VIDIOC_TRY_DECODER_CMD documentation for more information.

6.2.2.15.5. Return Value

On success 0 is returned, on error -1 and the errno variable is set appropriately. The generic error codes are described at the Generic Error Codes chapter.