tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1.. -*- coding: utf-8; mode: rst -*-
2
3.. _audio_fwrite:
4
5=========================
6Digital TV audio write()
7=========================
8
9Name
10----
11
12Digital TV audio write()
13
14.. attention:: This ioctl is deprecated
15
16Synopsis
17--------
18
19.. c:function:: size_t write(int fd, const void *buf, size_t count)
20 :name: dvb-audio-write
21
22
23Arguments
24---------
25
26.. flat-table::
27 :header-rows: 0
28 :stub-columns: 0
29
30
31 - .. row 1
32
33 - int fd
34
35 - File descriptor returned by a previous call to open().
36
37 - .. row 2
38
39 - void \*buf
40
41 - Pointer to the buffer containing the PES data.
42
43 - .. row 3
44
45 - size_t count
46
47 - Size of buf.
48
49
50Description
51-----------
52
53This system call can only be used if AUDIO_SOURCE_MEMORY is selected
54in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in
55PES format. If O_NONBLOCK is not specified the function will block
56until buffer space is available. The amount of data to be transferred is
57implied by count.
58
59
60Return Value
61------------
62
63.. flat-table::
64 :header-rows: 0
65 :stub-columns: 0
66
67
68 - .. row 1
69
70 - ``EPERM``
71
72 - Mode AUDIO_SOURCE_MEMORY not selected.
73
74 - .. row 2
75
76 - ``ENOMEM``
77
78 - Attempted to write more data than the internal buffer can hold.
79
80 - .. row 3
81
82 - ``EBADF``
83
84 - fd is not a valid open file descriptor.