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48 lines
904 B
48 lines
904 B
.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
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.. c:namespace:: DTV.dmx |
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.. _DMX_SET_BUFFER_SIZE: |
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=================== |
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DMX_SET_BUFFER_SIZE |
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=================== |
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Name |
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---- |
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DMX_SET_BUFFER_SIZE |
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Synopsis |
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-------- |
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.. c:macro:: DMX_SET_BUFFER_SIZE |
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``int ioctl(int fd, DMX_SET_BUFFER_SIZE, unsigned long size)`` |
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Arguments |
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--------- |
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``fd`` |
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File descriptor returned by :c:func:`open()`. |
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``size`` |
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Unsigned long size |
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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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Return Value |
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------------ |
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On success 0 is returned. |
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On error -1 is returned, and the ``errno`` variable is set |
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appropriately. |
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The generic error codes are described at the |
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:ref:`Generic Error Codes <gen-errors>` chapter.
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