| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _VIDEO_SLOWMOTION: |
| |
| ================ |
| VIDEO_SLOWMOTION |
| ================ |
| |
| Name |
| ---- |
| |
| VIDEO_SLOWMOTION |
| |
| |
| Synopsis |
| -------- |
| |
| .. cpp:function:: int ioctl(fd, int request = VIDEO_SLOWMOTION, 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_SLOWMOTION for this command. |
| |
| - .. row 3 |
| |
| - int nFrames |
| |
| - The number of times to repeat each frame. |
| |
| |
| Description |
| ----------- |
| |
| This ioctl call asks the video device to repeat decoding frames N number |
| of times. 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. |