| .. -*- coding: utf-8; mode: rst -*- |
| |
| .. _DMX_SET_BUFFER_SIZE: |
| |
| =================== |
| DMX_SET_BUFFER_SIZE |
| =================== |
| |
| Name |
| ---- |
| |
| DMX_SET_BUFFER_SIZE |
| |
| |
| Synopsis |
| -------- |
| |
| .. cpp:function:: int ioctl( int fd, int request = DMX_SET_BUFFER_SIZE, unsigned long size) |
| |
| |
| 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 DMX_SET_BUFFER_SIZE for this command. |
| |
| - .. row 3 |
| |
| - unsigned long size |
| |
| - Size of circular buffer. |
| |
| |
| Description |
| ----------- |
| |
| This ioctl call is used to set the size of the circular buffer used for |
| filtered data. The default size is two maximum sized sections, i.e. if |
| this function is not called a buffer size of 2 \* 4096 bytes will be |
| used. |
| |
| |
| 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. |
