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[media] Add multi-planar API documentation

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Add DocBook documentation for the new multi-planar API extensions to the
Video for Linux 2 API DocBook.

Signed-off-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Pawel Osciak
2011-01-07 01:41:33 -03:00
committed by Mauro Carvalho Chehab
parent c4c0a78d45
commit 53b5d5749b
16 changed files with 530 additions and 70 deletions
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13
Documentation/DocBook/v4l/dev-output.xml
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@@ -17,7 +17,8 @@ files are used for video capture devices.</para>
<title>Querying Capabilities</title>
<para>Devices supporting the video output interface set the
<constant>V4L2_CAP_VIDEO_OUTPUT</constant> flag in the
<constant>V4L2_CAP_VIDEO_OUTPUT</constant> or
<constant>V4L2_CAP_VIDEO_OUTPUT_MPLANE</constant> flag in the
<structfield>capabilities</structfield> field of &v4l2-capability;
returned by the &VIDIOC-QUERYCAP; ioctl. As secondary device functions
they may also support the <link linkend="raw-vbi">raw VBI
@@ -60,9 +61,11 @@ linkend="crop" />.</para>
<para>To query the current image format applications set the
<structfield>type</structfield> field of a &v4l2-format; to
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> and call the
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT</constant> or
<constant>V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE</constant> and call the
&VIDIOC-G-FMT; ioctl with a pointer to this structure. Drivers fill
the &v4l2-pix-format; <structfield>pix</structfield> member of the
the &v4l2-pix-format; <structfield>pix</structfield> or the
&v4l2-pix-format-mplane; <structfield>pix_mp</structfield> member of the
<structfield>fmt</structfield> union.</para>
<para>To request different parameters applications set the
@@ -80,8 +83,8 @@ adjust the parameters and finally return the actual parameters as
without disabling I/O or possibly time consuming hardware
preparations.</para>
<para>The contents of &v4l2-pix-format; are discussed in <xref
linkend="pixfmt" />. See also the specification of the
<para>The contents of &v4l2-pix-format; and &v4l2-pix-format-mplane;
are discussed in <xref linkend="pixfmt" />. See also the specification of the
<constant>VIDIOC_G_FMT</constant>, <constant>VIDIOC_S_FMT</constant>
and <constant>VIDIOC_TRY_FMT</constant> ioctls for details. Video
output devices must implement both the