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- .. -*- coding: utf-8; mode: rst -*-
- .. _AUDIO_SET_ID:
- ============
- AUDIO_SET_ID
- ============
- Name
- ----
- AUDIO_SET_ID
- .. attention:: This ioctl is deprecated
- Synopsis
- --------
- .. c:function:: int ioctl(int fd, AUDIO_SET_ID, int id)
- :name: AUDIO_SET_ID
- Arguments
- ---------
- .. flat-table::
- :header-rows: 0
- :stub-columns: 0
- -
- - int fd
- - File descriptor returned by a previous call to open().
- -
- - 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.
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