58 lines
1.0 KiB
ReStructuredText
58 lines
1.0 KiB
ReStructuredText
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.. -*- coding: utf-8; mode: rst -*-
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.. _DMX_SET_BUFFER_SIZE:
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DMX_SET_BUFFER_SIZE
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===================
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Description
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-----------
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This ioctl call is used to set the size of the circular buffer used for
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filtered data. The default size is two maximum sized sections, i.e. if
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this function is not called a buffer size of 2 \* 4096 bytes will be
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used.
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Synopsis
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--------
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.. c:function:: int ioctl( int fd, int request = DMX_SET_BUFFER_SIZE, unsigned long size)
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Arguments
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----------
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.. flat-table::
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:header-rows: 0
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:stub-columns: 0
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- .. row 1
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- int fd
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- File descriptor returned by a previous call to open().
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- .. row 2
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- int request
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- Equals DMX_SET_BUFFER_SIZE for this command.
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- .. row 3
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- unsigned long size
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- Size of circular buffer.
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Return Value
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------------
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On success 0 is returned, on error -1 and the ``errno`` variable is set
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appropriately. The generic error codes are described at the
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:ref:`Generic Error Codes <gen-errors>` chapter.
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