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1 | .. -*- coding: utf-8; mode: rst -*- |
2 | ||
3 | .. _VIDEO_FAST_FORWARD: | |
4 | ||
586027ce | 5 | ================== |
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6 | VIDEO_FAST_FORWARD |
7 | ================== | |
8 | ||
15e7d615 | 9 | Name |
586027ce | 10 | ---- |
47d23e36 | 11 | |
586027ce | 12 | VIDEO_FAST_FORWARD |
47d23e36 | 13 | |
cf8076c3 | 14 | .. attention:: This ioctl is deprecated. |
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15 | |
16 | Synopsis | |
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17 | -------- |
18 | ||
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19 | .. c:function:: int ioctl(fd, VIDEO_FAST_FORWARD, int nFrames) |
20 | :name: VIDEO_FAST_FORWARD | |
47d23e36 | 21 | |
47d23e36 | 22 | |
15e7d615 | 23 | Arguments |
586027ce | 24 | --------- |
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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 | - int request | |
40 | ||
41 | - Equals VIDEO_FAST_FORWARD for this command. | |
42 | ||
43 | - .. row 3 | |
44 | ||
45 | - int nFrames | |
46 | ||
47 | - The number of frames to skip. | |
48 | ||
49 | ||
15e7d615 | 50 | Description |
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51 | ----------- |
52 | ||
53 | This ioctl call asks the Video Device to skip decoding of N number of | |
54 | I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is | |
55 | selected. | |
56 | ||
57 | ||
15e7d615 | 58 | Return Value |
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59 | ------------ |
60 | ||
61 | On success 0 is returned, on error -1 and the ``errno`` variable is set | |
62 | appropriately. The generic error codes are described at the | |
63 | :ref:`Generic Error Codes <gen-errors>` chapter. | |
64 | ||
65 | ||
66 | ||
67 | .. flat-table:: | |
68 | :header-rows: 0 | |
69 | :stub-columns: 0 | |
70 | ||
71 | ||
72 | - .. row 1 | |
73 | ||
74 | - ``EPERM`` | |
75 | ||
76 | - Mode VIDEO_SOURCE_MEMORY not selected. |