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cf8076c314
Name all ioctl references and make them match the ioctls that are documented. That will improve the cross-reference index, as it will have all ioctls and syscalls there. While here, improve the documentation, marking the deprecated ioctls, and making the non-deprecated ones more like the rest of the media book. Also, add a notice for ioctls that still require documentation. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
85 lines
1.3 KiB
ReStructuredText
85 lines
1.3 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
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.. _audio_fwrite:
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=================
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DVB audio write()
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=================
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Name
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----
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DVB audio write()
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.. attention:: This ioctl is deprecated
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Synopsis
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--------
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.. c:function:: size_t write(int fd, const void *buf, size_t count)
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:name: dvb-audio-write
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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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- void \*buf
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- Pointer to the buffer containing the PES data.
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- .. row 3
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- size_t count
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- Size of buf.
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Description
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-----------
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This system call can only be used if AUDIO_SOURCE_MEMORY is selected
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in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in
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PES format. If O_NONBLOCK is not specified the function will block
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until buffer space is available. The amount of data to be transferred is
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implied by count.
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Return Value
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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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- ``EPERM``
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- Mode AUDIO_SOURCE_MEMORY not selected.
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- .. row 2
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- ``ENOMEM``
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- Attempted to write more data than the internal buffer can hold.
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- .. row 3
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- ``EBADF``
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- fd is not a valid open file descriptor.
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