aboutsummaryrefslogtreecommitdiff
path: root/Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst
diff options
context:
space:
mode:
authorLinus Torvalds2016-10-11 13:22:22 -0700
committerLinus Torvalds2016-10-11 13:22:22 -0700
commitde34f4da7f62ff59ac6e1ef320b0fcfa3296fce3 (patch)
tree88b5db2fc7fbbb0353edd8447a832a5225a49d01 /Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst
parent56e520c7a0a490b63b042b047ec9659fc08762a4 (diff)
parent9fce0c226536fc36c7fb0a80000ca38a995be43e (diff)
Merge tag 'media/v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media updates from Mauro Carvalho Chehab: - Documentation improvements: conversion of all non-DocBook documents to Sphinx and lots of fixes to the uAPI media book - New PCI driver for Techwell TW5864 media grabber boards - New SoC driver for ATMEL Image Sensor Controller - Removal of some obsolete SoC drivers (s5p-tv driver and soc_camera drivers) - Addition of ST CEC driver - Lots of drivers fixes, improvements and additions * tag 'media/v4.9-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (464 commits) [media] ttusb_dec: avoid the risk of go past buffer [media] cx23885: Fix some smatch warnings [media] si2165: switch to regmap [media] si2165: use i2c_client->dev instead of i2c_adapter->dev for logging [media] si2165: Remove legacy attach [media] cx231xx: attach si2165 driver via i2c_client [media] cx231xx: Prepare for attaching new style i2c_client DVB demod drivers [media] cx23885: attach si2165 driver via i2c_client [media] si2165: support i2c_client attach [media] si2165: avoid division by zero [media] rcar-vin: add R-Car gen2 fallback compatibility string [media] lgdt3306a: remove 20*50 msec unnecessary timeout [media] cx25821: Remove deprecated create_singlethread_workqueue [media] cx25821: Drop Freeing of Workqueue [media] cxd2841er: force 8MHz bandwidth for DVB-C if specified bw not supported [media] redrat3: hardware-specific parameters [media] redrat3: remove hw_timeout member [media] cxd2841er: BER and SNR reading for ISDB-T [media] dvb-usb: avoid link error with dib3000m{b,c| [media] dvb-usb: split out common parts of dibusb ...
Diffstat (limited to 'Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst')
-rw-r--r--Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst340
1 files changed, 129 insertions, 211 deletions
diff --git a/Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst b/Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst
index f1f661d0200c..d7e2b2fa8b88 100644
--- a/Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst
+++ b/Documentation/media/uapi/v4l/vidioc-g-sliced-vbi-cap.rst
@@ -15,7 +15,8 @@ VIDIOC_G_SLICED_VBI_CAP - Query sliced VBI capabilities
Synopsis
========
-.. cpp:function:: int ioctl( int fd, int request, struct v4l2_sliced_vbi_cap *argp )
+.. c:function:: int ioctl( int fd, VIDIOC_G_SLICED_VBI_CAP, struct v4l2_sliced_vbi_cap *argp )
+ :name: VIDIOC_G_SLICED_VBI_CAP
Arguments
@@ -24,9 +25,6 @@ Arguments
``fd``
File descriptor returned by :ref:`open() <func-open>`.
-``request``
- VIDIOC_G_SLICED_VBI_CAP
-
``argp``
@@ -35,141 +33,98 @@ Description
To find out which data services are supported by a sliced VBI capture or
output device, applications initialize the ``type`` field of a struct
-:ref:`v4l2_sliced_vbi_cap <v4l2-sliced-vbi-cap>`, clear the
+:c:type:`v4l2_sliced_vbi_cap`, clear the
``reserved`` array and call the :ref:`VIDIOC_G_SLICED_VBI_CAP <VIDIOC_G_SLICED_VBI_CAP>` ioctl. The
driver fills in the remaining fields or returns an ``EINVAL`` error code if
the sliced VBI API is unsupported or ``type`` is invalid.
-.. note:: The ``type`` field was added, and the ioctl changed from read-only
+.. note::
+
+ The ``type`` field was added, and the ioctl changed from read-only
to write-read, in Linux 2.6.19.
-.. _v4l2-sliced-vbi-cap:
+.. c:type:: v4l2_sliced_vbi_cap
+
+.. tabularcolumns:: |p{1.2cm}|p{4.2cm}|p{4.1cm}|p{4.0cm}|p{4.0cm}|
.. flat-table:: struct v4l2_sliced_vbi_cap
:header-rows: 0
:stub-columns: 0
:widths: 3 3 2 2 2
-
- - .. row 1
-
- - __u16
-
- - ``service_set``
-
- - :cspan:`2` A set of all data services supported by the driver.
- Equal to the union of all elements of the ``service_lines`` array.
-
- - .. row 2
-
- - __u16
-
- - ``service_lines``\ [2][24]
-
- - :cspan:`2` Each element of this array contains a set of data
- services the hardware can look for or insert into a particular
- scan line. Data services are defined in :ref:`vbi-services`.
- Array indices map to ITU-R line numbers (see also :ref:`vbi-525`
- and :ref:`vbi-625`) as follows:
-
- - .. row 3
-
- -
- -
- - Element
-
- - 525 line systems
-
- - 625 line systems
-
- - .. row 4
-
- -
- -
- - ``service_lines``\ [0][1]
-
- - 1
-
- - 1
-
- - .. row 5
-
- -
- -
- - ``service_lines``\ [0][23]
-
- - 23
-
- - 23
-
- - .. row 6
-
- -
- -
- - ``service_lines``\ [1][1]
-
- - 264
-
- - 314
-
- - .. row 7
-
- -
- -
- - ``service_lines``\ [1][23]
-
- - 286
-
- - 336
-
- - .. row 8
-
- -
-
- - .. row 9
-
- -
- -
- - :cspan:`2` The number of VBI lines the hardware can capture or
- output per frame, or the number of services it can identify on a
- given line may be limited. For example on PAL line 16 the hardware
- may be able to look for a VPS or Teletext signal, but not both at
- the same time. Applications can learn about these limits using the
- :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl as described in
- :ref:`sliced`.
-
- - .. row 10
-
- -
-
- - .. row 11
-
- -
- -
- - :cspan:`2` Drivers must set ``service_lines`` [0][0] and
- ``service_lines``\ [1][0] to zero.
-
- - .. row 12
-
- - __u32
-
- - ``type``
-
- - Type of the data stream, see :ref:`v4l2-buf-type`. Should be
- ``V4L2_BUF_TYPE_SLICED_VBI_CAPTURE`` or
- ``V4L2_BUF_TYPE_SLICED_VBI_OUTPUT``.
-
- - .. row 13
-
- - __u32
-
- - ``reserved``\ [3]
-
- - :cspan:`2` This array is reserved for future extensions.
- Applications and drivers must set it to zero.
-
-
+ * - __u16
+ - ``service_set``
+ - :cspan:`2` A set of all data services supported by the driver.
+
+ Equal to the union of all elements of the ``service_lines`` array.
+ * - __u16
+ - ``service_lines``\ [2][24]
+ - :cspan:`2` Each element of this array contains a set of data
+ services the hardware can look for or insert into a particular
+ scan line. Data services are defined in :ref:`vbi-services`.
+ Array indices map to ITU-R line numbers\ [#f1]_ as follows:
+ * -
+ -
+ - Element
+ - 525 line systems
+ - 625 line systems
+ * -
+ -
+ - ``service_lines``\ [0][1]
+ - 1
+ - 1
+ * -
+ -
+ - ``service_lines``\ [0][23]
+ - 23
+ - 23
+ * -
+ -
+ - ``service_lines``\ [1][1]
+ - 264
+ - 314
+ * -
+ -
+ - ``service_lines``\ [1][23]
+ - 286
+ - 336
+ * -
+ * -
+ -
+ - :cspan:`2` The number of VBI lines the hardware can capture or
+ output per frame, or the number of services it can identify on a
+ given line may be limited. For example on PAL line 16 the hardware
+ may be able to look for a VPS or Teletext signal, but not both at
+ the same time. Applications can learn about these limits using the
+ :ref:`VIDIOC_S_FMT <VIDIOC_G_FMT>` ioctl as described in
+ :ref:`sliced`.
+ * -
+ * -
+ -
+ - :cspan:`2` Drivers must set ``service_lines`` [0][0] and
+ ``service_lines``\ [1][0] to zero.
+ * - __u32
+ - ``type``
+ - Type of the data stream, see :c:type:`v4l2_buf_type`. Should be
+ ``V4L2_BUF_TYPE_SLICED_VBI_CAPTURE`` or
+ ``V4L2_BUF_TYPE_SLICED_VBI_OUTPUT``.
+ * - __u32
+ - ``reserved``\ [3]
+ - :cspan:`2` This array is reserved for future extensions.
+
+ Applications and drivers must set it to zero.
+
+.. [#f1]
+
+ See also :ref:`vbi-525` and :ref:`vbi-625`.
+
+
+.. raw:: latex
+
+ \begin{adjustbox}{width=\columnwidth}
+
+.. tabularcolumns:: |p{5.0cm}|p{1.4cm}|p{3.0cm}|p{2.5cm}|p{9.0cm}|
.. _vbi-services:
@@ -178,91 +133,54 @@ the sliced VBI API is unsupported or ``type`` is invalid.
:stub-columns: 0
:widths: 2 1 1 2 2
-
- - .. row 1
-
- - Symbol
-
- - Value
-
- - Reference
-
- - Lines, usually
-
- - Payload
-
- - .. row 2
-
- - ``V4L2_SLICED_TELETEXT_B`` (Teletext System B)
-
- - 0x0001
-
- - :ref:`ets300706`, :ref:`itu653`
-
- - PAL/SECAM line 7-22, 320-335 (second field 7-22)
-
- - Last 42 of the 45 byte Teletext packet, that is without clock
- run-in and framing code, lsb first transmitted.
-
- - .. row 3
-
- - ``V4L2_SLICED_VPS``
-
- - 0x0400
-
- - :ref:`ets300231`
-
- - PAL line 16
-
- - Byte number 3 to 15 according to Figure 9 of ETS 300 231, lsb
- first transmitted.
-
- - .. row 4
-
- - ``V4L2_SLICED_CAPTION_525``
-
- - 0x1000
-
- - :ref:`cea608`
-
- - NTSC line 21, 284 (second field 21)
-
- - Two bytes in transmission order, including parity bit, lsb first
- transmitted.
-
- - .. row 5
-
- - ``V4L2_SLICED_WSS_625``
-
- - 0x4000
-
- - :ref:`en300294`, :ref:`itu1119`
-
- - PAL/SECAM line 23
-
- -
-
- ::
-
- Byte 0 1
- msb lsb msb lsb
- Bit 7 6 5 4 3 2 1 0 x x 13 12 11 10 9
-
- - .. row 6
-
- - ``V4L2_SLICED_VBI_525``
-
- - 0x1000
-
- - :cspan:`2` Set of services applicable to 525 line systems.
-
- - .. row 7
-
- - ``V4L2_SLICED_VBI_625``
-
- - 0x4401
-
- - :cspan:`2` Set of services applicable to 625 line systems.
+ * - Symbol
+ - Value
+ - Reference
+ - Lines, usually
+ - Payload
+ * - ``V4L2_SLICED_TELETEXT_B`` (Teletext System B)
+ - 0x0001
+ - :ref:`ets300706`,
+
+ :ref:`itu653`
+ - PAL/SECAM line 7-22, 320-335 (second field 7-22)
+ - Last 42 of the 45 byte Teletext packet, that is without clock
+ run-in and framing code, lsb first transmitted.
+ * - ``V4L2_SLICED_VPS``
+ - 0x0400
+ - :ref:`ets300231`
+ - PAL line 16
+ - Byte number 3 to 15 according to Figure 9 of ETS 300 231, lsb
+ first transmitted.
+ * - ``V4L2_SLICED_CAPTION_525``
+ - 0x1000
+ - :ref:`cea608`
+ - NTSC line 21, 284 (second field 21)
+ - Two bytes in transmission order, including parity bit, lsb first
+ transmitted.
+ * - ``V4L2_SLICED_WSS_625``
+ - 0x4000
+ - :ref:`en300294`,
+
+ :ref:`itu1119`
+ - PAL/SECAM line 23
+ -
+
+ ::
+
+ Byte 0 1
+ msb lsb msb lsb
+ Bit 7 6 5 4 3 2 1 0 x x 13 12 11 10 9
+ * - ``V4L2_SLICED_VBI_525``
+ - 0x1000
+ - :cspan:`2` Set of services applicable to 525 line systems.
+ * - ``V4L2_SLICED_VBI_625``
+ - 0x4401
+ - :cspan:`2` Set of services applicable to 625 line systems.
+
+.. raw:: latex
+
+ \end{adjustbox}\newline\newline
Return Value