projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 47d23e36 MCC |
1 | .. -*- coding: utf-8; mode: rst -*- |
| 2 | ||
| 3 | .. _video_fwrite: | |
| 4 | ||
| 586027ce | 5 | ================= |
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6 | dvb video write() |
| 7 | ================= | |
| 8 | ||
| 15e7d615 | 9 | Name |
| 586027ce | 10 | ---- |
| 47d23e36 | 11 | |
| 586027ce | 12 | dvb video write() |
| 47d23e36 | 13 | |
| cf8076c3 | 14 | .. attention:: This ioctl is deprecated. |
| 15e7d615 MCC |
15 | |
| 16 | Synopsis | |
| 47d23e36 MCC |
17 | -------- |
| 18 | ||
| 1b81f010 | 19 | .. c:function:: size_t write(int fd, const void *buf, size_t count) |
| 47d23e36 | 20 | |
| 47d23e36 | 21 | |
| 15e7d615 | 22 | Arguments |
| 586027ce | 23 | --------- |
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24 | |
| 25 | .. flat-table:: | |
| 26 | :header-rows: 0 | |
| 27 | :stub-columns: 0 | |
| 28 | ||
| 29 | ||
| 30 | - .. row 1 | |
| 31 | ||
| 32 | - int fd | |
| 33 | ||
| 34 | - File descriptor returned by a previous call to open(). | |
| 35 | ||
| 36 | - .. row 2 | |
| 37 | ||
| 38 | - void \*buf | |
| 39 | ||
| 40 | - Pointer to the buffer containing the PES data. | |
| 41 | ||
| 42 | - .. row 3 | |
| 43 | ||
| 44 | - size_t count | |
| 45 | ||
| 46 | - Size of buf. | |
| 47 | ||
| 48 | ||
| 15e7d615 | 49 | Description |
| 586027ce | 50 | ----------- |
| 47d23e36 | 51 | |
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52 | This system call can only be used if VIDEO_SOURCE_MEMORY is selected |
| 53 | in the ioctl call VIDEO_SELECT_SOURCE. The data provided shall be in | |
| 54 | PES format, unless the capability allows other formats. If O_NONBLOCK | |
| 55 | is not specified the function will block until buffer space is | |
| 56 | available. The amount of data to be transferred is implied by count. | |
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57 | |
| 58 | ||
| 15e7d615 | 59 | Return Value |
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60 | ------------ |
| 61 | ||
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62 | .. flat-table:: |
| 63 | :header-rows: 0 | |
| 64 | :stub-columns: 0 | |
| 65 | ||
| 66 | ||
| 67 | - .. row 1 | |
| 68 | ||
| 69 | - ``EPERM`` | |
| 70 | ||
| 71 | - Mode VIDEO_SOURCE_MEMORY not selected. | |
| 72 | ||
| 73 | - .. row 2 | |
| 74 | ||
| 75 | - ``ENOMEM`` | |
| 76 | ||
| 77 | - Attempted to write more data than the internal buffer can hold. | |
| 78 | ||
| 79 | - .. row 3 | |
| 80 | ||
| 81 | - ``EBADF`` | |
| 82 | ||
| 83 | - fd is not a valid open file descriptor. |