| .. -*- coding: utf-8; mode: rst -*- | |
| .. _VIDEO_TRY_COMMAND: | |
| ================= | |
| VIDEO_TRY_COMMAND | |
| ================= | |
| Name | |
| ---- | |
| VIDEO_TRY_COMMAND | |
| .. attention:: This ioctl is deprecated. | |
| Synopsis | |
| -------- | |
| .. c:function:: int ioctl(int fd, VIDEO_TRY_COMMAND, struct video_command *cmd) | |
| :name: VIDEO_TRY_COMMAND | |
| Arguments | |
| --------- | |
| .. flat-table:: | |
| :header-rows: 0 | |
| :stub-columns: 0 | |
| - .. row 1 | |
| - int fd | |
| - File descriptor returned by a previous call to open(). | |
| - .. row 2 | |
| - int request | |
| - Equals VIDEO_TRY_COMMAND for this command. | |
| - .. row 3 | |
| - struct video_command \*cmd | |
| - Try a decoder command. | |
| Description | |
| ----------- | |
| This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders | |
| this ioctl has been replaced by the | |
| :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_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 | |
| :ref:`VIDIOC_TRY_DECODER_CMD <VIDIOC_DECODER_CMD>` documentation | |
| for more information. | |
| 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 | |
| :ref:`Generic Error Codes <gen-errors>` chapter. |