| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _VIDEO_TRY_COMMAND: |
| |
| ================= |
| VIDEO_TRY_COMMAND |
| ================= |
| |
| Name |
| ---- |
| |
| VIDEO_TRY_COMMAND |
| |
| |
| Synopsis |
| -------- |
| |
| .. cpp:function:: int ioctl(int fd, int request = VIDEO_TRY_COMMAND, struct video_command *cmd) |
| |
| |
| 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| This ioctl is obsolete.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| this ioctl has been replaced by the |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. |
