From 76cb841cb886eef6b3bee341a2266c76578724ad Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 6 May 2024 03:02:30 +0200 Subject: Adding upstream version 4.19.249. Signed-off-by: Daniel Baumann --- Documentation/media/uapi/dvb/audio.rst | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 Documentation/media/uapi/dvb/audio.rst (limited to 'Documentation/media/uapi/dvb/audio.rst') diff --git a/Documentation/media/uapi/dvb/audio.rst b/Documentation/media/uapi/dvb/audio.rst new file mode 100644 index 000000000..e9f9e589c --- /dev/null +++ b/Documentation/media/uapi/dvb/audio.rst @@ -0,0 +1,27 @@ +.. -*- coding: utf-8; mode: rst -*- + +.. _dvb_audio: + +####################### +Digital TV Audio Device +####################### + +The Digital TV audio device controls the MPEG2 audio decoder of the Digital +TV hardware. It can be accessed through ``/dev/dvb/adapter?/audio?``. Data +types and and ioctl definitions can be accessed by including +``linux/dvb/audio.h`` in your application. + +Please note that some Digital TV cards don’t have their own MPEG decoder, which +results in the omission of the audio and video device. + +These ioctls were also used by V4L2 to control MPEG decoders implemented +in V4L2. The use of these ioctls for that purpose has been made obsolete +and proper V4L2 ioctls or controls have been created to replace that +functionality. + + +.. toctree:: + :maxdepth: 1 + + audio_data_types + audio_function_calls -- cgit v1.2.3