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1 | .. -*- coding: utf-8; mode: rst -*- |
2 | ||
3 | .. _DMX_SET_FILTER: | |
4 | ||
586027ce | 5 | ============== |
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6 | DMX_SET_FILTER |
7 | ============== | |
8 | ||
15e7d615 | 9 | Name |
586027ce | 10 | ---- |
47d23e36 | 11 | |
586027ce | 12 | DMX_SET_FILTER |
47d23e36 | 13 | |
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14 | |
15 | Synopsis | |
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16 | -------- |
17 | ||
5929cb17 | 18 | .. cpp:function:: int ioctl( int fd, int request = DMX_SET_FILTER, struct dmx_sct_filter_params *params) |
47d23e36 | 19 | |
47d23e36 | 20 | |
15e7d615 | 21 | Arguments |
586027ce | 22 | --------- |
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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_SET_FILTER for this command. | |
40 | ||
41 | - .. row 3 | |
42 | ||
43 | - struct dmx_sct_filter_params \*params | |
44 | ||
45 | - Pointer to structure containing filter parameters. | |
46 | ||
47 | ||
15e7d615 | 48 | Description |
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49 | ----------- |
50 | ||
51 | This ioctl call sets up a filter according to the filter and mask | |
52 | parameters provided. A timeout may be defined stating number of seconds | |
53 | to wait for a section to be loaded. A value of 0 means that no timeout | |
54 | should be applied. Finally there is a flag field where it is possible to | |
55 | state whether a section should be CRC-checked, whether the filter should | |
56 | be a ”one-shot” filter, i.e. if the filtering operation should be | |
57 | stopped after the first section is received, and whether the filtering | |
58 | operation should be started immediately (without waiting for a | |
59 | DMX_START ioctl call). If a filter was previously set-up, this filter | |
60 | will be canceled, and the receive buffer will be flushed. | |
61 | ||
62 | ||
15e7d615 | 63 | Return Value |
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64 | ------------ |
65 | ||
66 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
67 | appropriately. The generic error codes are described at the | |
68 | :ref:`Generic Error Codes <gen-errors>` chapter. |