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47d23e36 MCC |
1 | .. -*- coding: utf-8; mode: rst -*- |
2 | ||
3 | .. _DMX_START: | |
4 | ||
586027ce | 5 | ========= |
47d23e36 MCC |
6 | DMX_START |
7 | ========= | |
8 | ||
15e7d615 | 9 | Name |
586027ce | 10 | ---- |
47d23e36 | 11 | |
586027ce | 12 | DMX_START |
47d23e36 | 13 | |
15e7d615 MCC |
14 | |
15 | Synopsis | |
47d23e36 MCC |
16 | -------- |
17 | ||
5929cb17 | 18 | .. cpp:function:: int ioctl( int fd, int request = DMX_START) |
47d23e36 | 19 | |
47d23e36 | 20 | |
15e7d615 | 21 | Arguments |
586027ce | 22 | --------- |
47d23e36 MCC |
23 | |
24 | .. flat-table:: | |
25 | :header-rows: 0 | |
26 | :stub-columns: 0 | |
27 | ||
28 | ||
29 | - .. row 1 | |
30 | ||
31 | - int fd | |
32 | ||
33 | - File descriptor returned by a previous call to open(). | |
34 | ||
35 | - .. row 2 | |
36 | ||
37 | - int request | |
38 | ||
39 | - Equals DMX_START for this command. | |
40 | ||
41 | ||
15e7d615 | 42 | Description |
586027ce MCC |
43 | ----------- |
44 | ||
45 | This ioctl call is used to start the actual filtering operation defined | |
46 | via the ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER. | |
47 | ||
48 | ||
15e7d615 | 49 | Return Value |
47d23e36 MCC |
50 | ------------ |
51 | ||
52 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
53 | appropriately. The generic error codes are described at the | |
54 | :ref:`Generic Error Codes <gen-errors>` chapter. | |
55 | ||
56 | ||
57 | ||
58 | .. flat-table:: | |
59 | :header-rows: 0 | |
60 | :stub-columns: 0 | |
61 | ||
62 | ||
63 | - .. row 1 | |
64 | ||
65 | - ``EINVAL`` | |
66 | ||
67 | - Invalid argument, i.e. no filtering parameters provided via the | |
68 | DMX_SET_FILTER or DMX_SET_PES_FILTER functions. | |
69 | ||
70 | - .. row 2 | |
71 | ||
72 | - ``EBUSY`` | |
73 | ||
74 | - This error code indicates that there are conflicting requests. | |
75 | There are active filters filtering data from another input source. | |
76 | Make sure that these filters are stopped before starting this | |
77 | filter. |