int fd | File descriptor returned by a previous call to open(). |
int type | stream type |
This ioctl tells the driver which kind of audio stream to expect. This is useful if the stream offers several audio sub-streams like LPCM and AC3.
On success 0 is returned, on error -1 and the errno variable is set appropriately. The generic error codes are described at the Generic Error Codes chapter.
EINVAL | type is not a valid or supported stream type. |