Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | |
| 3 | .. _VIDEO_FAST_FORWARD: |
| 4 | |
Mauro Carvalho Chehab | 586027c | 2016-07-05 07:58:48 -0300 | [diff] [blame] | 5 | ================== |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 6 | VIDEO_FAST_FORWARD |
| 7 | ================== |
| 8 | |
Mauro Carvalho Chehab | 15e7d61 | 2016-07-05 15:14:35 -0300 | [diff] [blame] | 9 | Name |
Mauro Carvalho Chehab | 586027c | 2016-07-05 07:58:48 -0300 | [diff] [blame] | 10 | ---- |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 11 | |
Mauro Carvalho Chehab | 586027c | 2016-07-05 07:58:48 -0300 | [diff] [blame] | 12 | VIDEO_FAST_FORWARD |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 13 | |
Mauro Carvalho Chehab | 15e7d61 | 2016-07-05 15:14:35 -0300 | [diff] [blame] | 14 | |
| 15 | Synopsis |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 16 | -------- |
| 17 | |
Mauro Carvalho Chehab | 5929cb1 | 2016-07-05 15:22:59 -0300 | [diff] [blame^] | 18 | .. cpp:function:: int ioctl(fd, int request = VIDEO_FAST_FORWARD, int nFrames) |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 19 | |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 20 | |
Mauro Carvalho Chehab | 15e7d61 | 2016-07-05 15:14:35 -0300 | [diff] [blame] | 21 | Arguments |
Mauro Carvalho Chehab | 586027c | 2016-07-05 07:58:48 -0300 | [diff] [blame] | 22 | --------- |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 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 VIDEO_FAST_FORWARD for this command. |
| 40 | |
| 41 | - .. row 3 |
| 42 | |
| 43 | - int nFrames |
| 44 | |
| 45 | - The number of frames to skip. |
| 46 | |
| 47 | |
Mauro Carvalho Chehab | 15e7d61 | 2016-07-05 15:14:35 -0300 | [diff] [blame] | 48 | Description |
Mauro Carvalho Chehab | 586027c | 2016-07-05 07:58:48 -0300 | [diff] [blame] | 49 | ----------- |
| 50 | |
| 51 | This ioctl call asks the Video Device to skip decoding of N number of |
| 52 | I-frames. This call can only be used if VIDEO_SOURCE_MEMORY is |
| 53 | selected. |
| 54 | |
| 55 | |
Mauro Carvalho Chehab | 15e7d61 | 2016-07-05 15:14:35 -0300 | [diff] [blame] | 56 | Return Value |
Mauro Carvalho Chehab | 47d23e3 | 2016-07-05 10:37:31 -0300 | [diff] [blame] | 57 | ------------ |
| 58 | |
| 59 | On success 0 is returned, on error -1 and the ``errno`` variable is set |
| 60 | appropriately. The generic error codes are described at the |
| 61 | :ref:`Generic Error Codes <gen-errors>` chapter. |
| 62 | |
| 63 | |
| 64 | |
| 65 | .. flat-table:: |
| 66 | :header-rows: 0 |
| 67 | :stub-columns: 0 |
| 68 | |
| 69 | |
| 70 | - .. row 1 |
| 71 | |
| 72 | - ``EPERM`` |
| 73 | |
| 74 | - Mode VIDEO_SOURCE_MEMORY not selected. |