| .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later | |
| .. c:namespace:: DTV.video | |
| .. _VIDEO_FAST_FORWARD: | |
| ================== | |
| VIDEO_FAST_FORWARD | |
| ================== | |
| Name | |
| ---- | |
| VIDEO_FAST_FORWARD | |
| .. attention:: This ioctl is deprecated. | |
| Synopsis | |
| -------- | |
| .. c:macro:: VIDEO_FAST_FORWARD | |
| ``int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames)`` | |
| 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_FAST_FORWARD for this command. | |
| - .. row 3 | |
| - int nFrames | |
| - The number of frames to skip. | |
| Description | |
| ----------- | |
| This ioctl call asks the Video Device to skip decoding of N number of | |
| I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is | |
| selected. | |
| 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. | |
| .. flat-table:: | |
| :header-rows: 0 | |
| :stub-columns: 0 | |
| - .. row 1 | |
| - ``EPERM`` | |
| - Mode VIDEO_SOURCE_MEMORY not selected. |