| .. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later |
| .. c:namespace:: DTV.video |
| |
| .. _video_fwrite: |
| |
| ================= |
| dvb video write() |
| ================= |
| |
| Name |
| ---- |
| |
| dvb video write() |
| |
| .. attention:: This ioctl is deprecated. |
| |
| Synopsis |
| -------- |
| |
| .. c:function:: size_t write(int fd, const void *buf, size_t count) |
| |
| Arguments |
| --------- |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| - .. row 1 |
| |
| - int fd |
| |
| - File descriptor returned by a previous call to open(). |
| |
| - .. row 2 |
| |
| - void \*buf |
| |
| - Pointer to the buffer containing the PES data. |
| |
| - .. row 3 |
| |
| - size_t count |
| |
| - Size of buf. |
| |
| Description |
| ----------- |
| |
| This system call can only be used if VIDEO_SOURCE_MEMORY is selected |
| in the ioctl call VIDEO_SELECT_SOURCE. The data provided shall be in |
| PES format, unless the capability allows other formats. If O_NONBLOCK |
| is not specified the function will block until buffer space is |
| available. The amount of data to be transferred is implied by count. |
| |
| Return Value |
| ------------ |
| |
| .. flat-table:: |
| :header-rows: 0 |
| :stub-columns: 0 |
| |
| - .. row 1 |
| |
| - ``EPERM`` |
| |
| - Mode VIDEO_SOURCE_MEMORY not selected. |
| |
| - .. row 2 |
| |
| - ``ENOMEM`` |
| |
| - Attempted to write more data than the internal buffer can hold. |
| |
| - .. row 3 |
| |
| - ``EBADF`` |
| |
| - fd is not a valid open file descriptor. |
