.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later .. c:namespace:: DTV.audio .. _audio_fwrite: ========================= Digital TV audio write() ========================= Name ---- Digital TV audio 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 AUDIO_SOURCE_MEMORY is selected in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in PES format. 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 AUDIO_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.