mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 12:43:55 +08:00
60c2820d0f
The name of the subsystem is "media", and not "linux_tv". Also, as we plan to add other stuff there in the future, let's rename also the media uAPI book to media_uapi, to make it clearer. No functional changes. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
66 lines
1.2 KiB
ReStructuredText
66 lines
1.2 KiB
ReStructuredText
.. -*- coding: utf-8; mode: rst -*-
|
|
|
|
.. _AUDIO_SET_ID:
|
|
|
|
============
|
|
AUDIO_SET_ID
|
|
============
|
|
|
|
Name
|
|
----
|
|
|
|
AUDIO_SET_ID
|
|
|
|
|
|
Synopsis
|
|
--------
|
|
|
|
.. cpp:function:: int ioctl(int fd, int request = AUDIO_SET_ID, int id)
|
|
|
|
|
|
Arguments
|
|
---------
|
|
|
|
.. flat-table::
|
|
:header-rows: 0
|
|
:stub-columns: 0
|
|
|
|
|
|
- .. row 1
|
|
|
|
- int fd
|
|
|
|
- File descriptor returned by a previous call to open().
|
|
|
|
- .. row 2
|
|
|
|
- int request
|
|
|
|
- Equals AUDIO_SET_ID for this command.
|
|
|
|
- .. row 3
|
|
|
|
- int id
|
|
|
|
- audio sub-stream id
|
|
|
|
|
|
Description
|
|
-----------
|
|
|
|
This ioctl selects which sub-stream is to be decoded if a program or
|
|
system stream is sent to the video device. If no audio stream type is
|
|
set the id has to be in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for
|
|
AC3 and in [0xA0,0xA7] for LPCM. More specifications may follow for
|
|
other stream types. If the stream type is set the id just specifies the
|
|
substream id of the audio stream and only the first 5 bits are
|
|
recognized.
|
|
|
|
|
|
Return Value
|
|
------------
|
|
|
|
On success 0 is returned, on error -1 and the ``errno`` variable is set
|
|
appropriately. The generic error codes are described at the
|
|
:ref:`Generic Error Codes <gen-errors>` chapter.
|