45 lines
869 B
ReStructuredText
45 lines
869 B
ReStructuredText
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.. -*- coding: utf-8; mode: rst -*-
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.. _lirc_get_length:
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*********************
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ioctl LIRC_GET_LENGTH
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*********************
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Name
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====
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LIRC_GET_LENGTH - Retrieves the code length in bits.
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Synopsis
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========
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.. c:function:: int ioctl( int fd, LIRC_GET_LENGTH, __u32 *length )
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:name: LIRC_GET_LENGTH
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Arguments
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=========
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``fd``
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File descriptor returned by open().
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``length``
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length, in bits
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Description
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===========
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Retrieves the code length in bits (only for
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:ref:`LIRC_MODE_LIRCCODE <lirc-mode-lirccode>`).
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Reads on the device must be done in blocks matching the bit count.
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The bit could should be rounded up so that it matches full bytes.
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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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