int fd | File descriptor returned by a previous call to open(). |
void *buf | Pointer to the buffer containing the PES data. |
size_t count | Size of buf. |
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.
EPERM | Mode VIDEO_SOURCE_MEMORY not selected. |
ENOMEM | Attempted to write more data than the internal buffer can hold. |
EBADF | fd is not a valid open file descriptor. |