xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Merge branch 'patches_for_v3.6' into v4l_for_linus

Browse Source 
* patches_for_v3.6: (174 commits)
  v4l: Export v4l2-common.h in include/linux/Kbuild
  media: Revert "[media] Terratec Cinergy S2 USB HD Rev.2"
  [media] media: Use pr_info not homegrown pr_reg macro
  [media] Terratec Cinergy S2 USB HD Rev.2
  [media] v4l: Correct conflicting V4L2 subdev selection API documentation
  [media] Feature removal: V4L2 selections API target and flag definitions
  [media] v4l: Unify selection flags documentation
  [media] v4l: Unify selection flags
  [media] v4l: Common documentation for selection targets
  [media] v4l: Unify selection targets across V4L2 and V4L2 subdev interfaces
  [media] v4l: Remove "_ACTUAL" from subdev selection API target definition names
  [media] V4L: Remove "_ACTIVE" from the selection target name definitions
  [media] media: dvb-usb: print mac address via native %pM
  [media] s5p-tv: Use module_i2c_driver in sii9234_drv.c file
  [media] media: gpio-ir-recv: add allowed_protos for platform data
  [media] s5p-jpeg: Use module_platform_driver in jpeg-core.c file
  [media] saa7134: fix spelling of detach in label
  [media] cx88-blackbird: replace ioctl by unlocked_ioctl
  [media] cx88: don't use current_norm
  [media] cx88: fix a number of v4l2-compliance violations
  ...
This commit is contained in:
Mauro Carvalho Chehab
2012-07-30 14:22:44 -03:00
parent ec3ed85f92 2cefabc00f
commit c893e7c64e
156 changed files with 7730 additions and 5669 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/DocBook/media/v4l/biblio.xml
View File

@@ -194,7 +194,7 @@ in the frequency range from 87,5 to 108,0 MHz</title>
<corpauthor>National Radio Systems Committee
(<ulink url="http://www.nrscstandards.org">http://www.nrscstandards.org</ulink>)</corpauthor>
</authorgroup>
<title>NTSC-4: United States RBDS Standard</title>
<title>NRSC-4: United States RBDS Standard</title>
</biblioentry>
<biblioentry id="iso12232">

17
Documentation/DocBook/media/v4l/common.xml
View File

@@ -464,14 +464,14 @@ The <structfield>type</structfield> field of the respective
<structfield>tuner</structfield> field contains the index number of
the tuner.</para>
<para>Radio devices have exactly one tuner with index zero, no
<para>Radio input devices have exactly one tuner with index zero, no
video inputs.</para>
<para>To query and change tuner properties applications use the
&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; ioctl, respectively. The
&v4l2-tuner; returned by <constant>VIDIOC_G_TUNER</constant> also
contains signal status information applicable when the tuner of the
current video input, or a radio tuner is queried. Note that
current video or radio input is queried. Note that
<constant>VIDIOC_S_TUNER</constant> does not switch the current tuner,
when there is more than one at all. The tuner is solely determined by
the current video input. Drivers must support both ioctls and set the
@@ -491,8 +491,17 @@ the modulator. The <structfield>type</structfield> field of the
respective &v4l2-output; returned by the &VIDIOC-ENUMOUTPUT; ioctl is
set to <constant>V4L2_OUTPUT_TYPE_MODULATOR</constant> and its
<structfield>modulator</structfield> field contains the index number
of the modulator. This specification does not define radio output
devices.</para>
of the modulator.</para>
<para>Radio output devices have exactly one modulator with index
zero, no video outputs.</para>
<para>A video or radio device cannot support both a tuner and a
modulator. Two separate device nodes will have to be used for such
hardware, one that supports the tuner functionality and one that supports
the modulator functionality. The reason is a limitation with the
&VIDIOC-S-FREQUENCY; ioctl where you cannot specify whether the frequency
is for a tuner or a modulator.</para>
<para>To query and change modulator properties applications use
the &VIDIOC-G-MODULATOR; and &VIDIOC-S-MODULATOR; ioctl. Note that

21
Documentation/DocBook/media/v4l/compat.xml
View File

@@ -2377,10 +2377,11 @@ that used it. It was originally scheduled for removal in 2.6.35.
<para>V4L2_CTRL_FLAG_VOLATILE was added to signal volatile controls to userspace.</para>
</listitem>
<listitem>
<para>Add selection API for extended control over cropping and
composing. Does not affect the compatibility of current drivers and
applications. See <link linkend="selection-api"> selection API </link> for
details.</para>
<para>Add selection API for extended control over cropping
and composing. Does not affect the compatibility of current
drivers and applications. See <link
linkend="selection-api"> selection API </link> for
details.</para>
</listitem>
</orderedlist>
</section>
@@ -2458,6 +2459,18 @@ details.</para>
</orderedlist>
</section>
<section>
<title>V4L2 in Linux 3.5</title>
<orderedlist>
<listitem>
<para>Replaced <structfield>input</structfield> in
<structname>v4l2_buffer</structname> by
<structfield>reserved2</structfield> and removed
<constant>V4L2_BUF_FLAG_INPUT</constant>.</para>
</listitem>
</orderedlist>
</section>
<section id="other">
<title>Relation of V4L2 to other Linux multimedia APIs</title>

36
Documentation/DocBook/media/v4l/dev-subdev.xml
View File

@@ -276,7 +276,7 @@
</para>
</section>
<section>
<section id="v4l2-subdev-selections">
<title>Selections: cropping, scaling and composition</title>
<para>Many sub-devices support cropping frames on their input or output
@@ -290,8 +290,8 @@
size. Both the coordinates and sizes are expressed in pixels.</para>
<para>As for pad formats, drivers store try and active
rectangles for the selection targets of ACTUAL type <xref
linkend="v4l2-subdev-selection-targets">.</xref></para>
rectangles for the selection targets <xref
linkend="v4l2-selections-common" />.</para>
<para>On sink pads, cropping is applied relative to the
current pad format. The pad format represents the image size as
@@ -308,7 +308,7 @@
<para>Scaling support is optional. When supported by a subdev,
the crop rectangle on the subdev's sink pad is scaled to the
size configured using the &VIDIOC-SUBDEV-S-SELECTION; IOCTL
using <constant>V4L2_SUBDEV_SEL_COMPOSE_ACTUAL</constant>
using <constant>V4L2_SEL_TGT_COMPOSE</constant>
selection target on the same pad. If the subdev supports scaling
but not composing, the top and left values are not used and must
always be set to zero.</para>
@@ -323,32 +323,32 @@
<para>The drivers should always use the closest possible
rectangle the user requests on all selection targets, unless
specifically told otherwise.
<constant>V4L2_SUBDEV_SEL_FLAG_SIZE_GE</constant> and
<constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant> flags may be
<constant>V4L2_SEL_FLAG_GE</constant> and
<constant>V4L2_SEL_FLAG_LE</constant> flags may be
used to round the image size either up or down. <xref
linkend="v4l2-subdev-selection-flags"></xref></para>
linkend="v4l2-selection-flags" /></para>
</section>
<section>
<title>Types of selection targets</title>
<section>
<title>ACTUAL targets</title>
<title>Actual targets</title>
<para>ACTUAL targets reflect the actual hardware configuration
at any point of time. There is a BOUNDS target
corresponding to every ACTUAL.</para>
<para>Actual targets (without a postfix) reflect the actual
hardware configuration at any point of time. There is a BOUNDS
target corresponding to every actual target.</para>
</section>
<section>
<title>BOUNDS targets</title>
<para>BOUNDS targets is the smallest rectangle that contains
all valid ACTUAL rectangles. It may not be possible to set the
ACTUAL rectangle as large as the BOUNDS rectangle, however.
This may be because e.g. a sensor's pixel array is not
rectangular but cross-shaped or round. The maximum size may
also be smaller than the BOUNDS rectangle.</para>
<para>BOUNDS targets is the smallest rectangle that contains all
valid actual rectangles. It may not be possible to set the actual
rectangle as large as the BOUNDS rectangle, however. This may be
because e.g. a sensor's pixel array is not rectangular but
cross-shaped or round. The maximum size may also be smaller than the
BOUNDS rectangle.</para>
</section>
</section>
@@ -362,7 +362,7 @@
performed by the user: the changes made will be propagated to
any subsequent stages. If this behaviour is not desired, the
user must set
<constant>V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG</constant> flag. This
<constant>V4L2_SEL_FLAG_KEEP_CONFIG</constant> flag. This
flag causes no propagation of the changes are allowed in any
circumstances. This may also cause the accessed rectangle to be
adjusted by the driver, depending on the properties of the

19
Documentation/DocBook/media/v4l/io.xml
View File

@@ -683,14 +683,12 @@ memory, set by the application. See <xref linkend="userp" /> for details.
</row>
<row>
<entry>__u32</entry>
<entry><structfield>input</structfield></entry>
<entry><structfield>reserved2</structfield></entry>
<entry></entry>
<entry>Some video capture drivers support rapid and
synchronous video input changes, a function useful for example in
video surveillance applications. For this purpose applications set the
<constant>V4L2_BUF_FLAG_INPUT</constant> flag, and this field to the
number of a video input as in &v4l2-input; field
<structfield>index</structfield>.</entry>
<entry>A place holder for future extensions and custom
(driver defined) buffer types
<constant>V4L2_BUF_TYPE_PRIVATE</constant> and higher. Applications
should set this to 0.</entry>
</row>
<row>
<entry>__u32</entry>
@@ -921,13 +919,6 @@ previous key frame.</entry>
<entry>The <structfield>timecode</structfield> field is valid.
Drivers set or clear this flag when the <constant>VIDIOC_DQBUF</constant>
ioctl is called.</entry>
</row>
<row>
<entry><constant>V4L2_BUF_FLAG_INPUT</constant></entry>
<entry>0x0200</entry>
<entry>The <structfield>input</structfield> field is valid.
Applications set or clear this flag before calling the
<constant>VIDIOC_QBUF</constant> ioctl.</entry>
</row>
<row>
<entry><constant>V4L2_BUF_FLAG_PREPARED</constant></entry>

34
Documentation/DocBook/media/v4l/selection-api.xml
View File

@@ -53,11 +53,11 @@ cropping and composing rectangles have the same size.</para>
</mediaobject>
</figure>
For complete list of the available selection targets see table <xref
linkend="v4l2-sel-target"/>
</section>
See <xref linkend="v4l2-selection-targets" /> for more
information.
<section>
<title>Configuration</title>
@@ -74,7 +74,7 @@ cropping/composing rectangles may have to be aligned, and both the source and
the sink may have arbitrary upper and lower size limits. Therefore, as usual,
drivers are expected to adjust the requested parameters and return the actual
values selected. An application can control the rounding behaviour using <link
linkend="v4l2-sel-flags"> constraint flags </link>.</para>
linkend="v4l2-selection-flags"> constraint flags </link>.</para>
<section>
@@ -91,7 +91,7 @@ top/left corner at position <constant> (0,0) </constant>. The rectangle's
coordinates are expressed in pixels.</para>
<para>The top left corner, width and height of the source rectangle, that is
the area actually sampled, is given by the <constant> V4L2_SEL_TGT_CROP_ACTIVE
the area actually sampled, is given by the <constant> V4L2_SEL_TGT_CROP
</constant> target. It uses the same coordinate system as <constant>
V4L2_SEL_TGT_CROP_BOUNDS </constant>. The active cropping area must lie
completely inside the capture boundaries. The driver may further adjust the
@@ -111,13 +111,13 @@ height are equal to the image size set by <constant> VIDIOC_S_FMT </constant>.
</para>
<para>The part of a buffer into which the image is inserted by the hardware is
controlled by the <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.
controlled by the <constant> V4L2_SEL_TGT_COMPOSE </constant> target.
The rectangle's coordinates are also expressed in the same coordinate system as
the bounds rectangle. The composing rectangle must lie completely inside bounds
rectangle. The driver must adjust the composing rectangle to fit to the
bounding limits. Moreover, the driver can perform other adjustments according
to hardware limitations. The application can control rounding behaviour using
<link linkend="v4l2-sel-flags"> constraint flags </link>.</para>
<link linkend="v4l2-selection-flags"> constraint flags </link>.</para>
<para>For capture devices the default composing rectangle is queried using
<constant> V4L2_SEL_TGT_COMPOSE_DEFAULT </constant>. It is usually equal to the
@@ -125,7 +125,7 @@ bounding rectangle.</para>
<para>The part of a buffer that is modified by the hardware is given by
<constant> V4L2_SEL_TGT_COMPOSE_PADDED </constant>. It contains all pixels
defined using <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> plus all
defined using <constant> V4L2_SEL_TGT_COMPOSE </constant> plus all
padding data modified by hardware during insertion process. All pixels outside
this rectangle <emphasis>must not</emphasis> be changed by the hardware. The
content of pixels that lie inside the padded area but outside active area is
@@ -153,7 +153,7 @@ specified using <constant> VIDIOC_S_FMT </constant> ioctl.</para>
<para>The top left corner, width and height of the source rectangle, that is
the area from which image date are processed by the hardware, is given by the
<constant> V4L2_SEL_TGT_CROP_ACTIVE </constant>. Its coordinates are expressed
<constant> V4L2_SEL_TGT_CROP </constant>. Its coordinates are expressed
in in the same coordinate system as the bounds rectangle. The active cropping
area must lie completely inside the crop boundaries and the driver may further
adjust the requested size and/or position according to hardware
@@ -165,7 +165,7 @@ bounding rectangle.</para>
<para>The part of a video signal or graphics display where the image is
inserted by the hardware is controlled by <constant>
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target. The rectangle's coordinates
V4L2_SEL_TGT_COMPOSE </constant> target. The rectangle's coordinates
are expressed in pixels. The composing rectangle must lie completely inside the
bounds rectangle. The driver must adjust the area to fit to the bounding
limits. Moreover, the driver can perform other adjustments according to
@@ -184,7 +184,7 @@ such a padded area is driver-dependent feature not covered by this document.
Driver developers are encouraged to keep padded rectangle equal to active one.
The padded target is accessed by the <constant> V4L2_SEL_TGT_COMPOSE_PADDED
</constant> identifier. It must contain all pixels from the <constant>
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.</para>
V4L2_SEL_TGT_COMPOSE </constant> target.</para>
</section>
@@ -193,8 +193,8 @@ V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> target.</para>
<title>Scaling control</title>
<para>An application can detect if scaling is performed by comparing the width
and the height of rectangles obtained using <constant> V4L2_SEL_TGT_CROP_ACTIVE
</constant> and <constant> V4L2_SEL_TGT_COMPOSE_ACTIVE </constant> targets. If
and the height of rectangles obtained using <constant> V4L2_SEL_TGT_CROP
</constant> and <constant> V4L2_SEL_TGT_COMPOSE </constant> targets. If
these are not equal then the scaling is applied. The application can compute
the scaling ratios using these values.</para>
@@ -252,7 +252,7 @@ area)</para>
ret = ioctl(fd, &VIDIOC-G-SELECTION;, &amp;sel);
if (ret)
exit(-1);
sel.target = V4L2_SEL_TGT_CROP_ACTIVE;
sel.target = V4L2_SEL_TGT_CROP;
ret = ioctl(fd, &VIDIOC-S-SELECTION;, &amp;sel);
if (ret)
exit(-1);
@@ -281,7 +281,7 @@ area)</para>
r.left = sel.r.width / 4;
r.top = sel.r.height / 4;
sel.r = r;
sel.target = V4L2_SEL_TGT_COMPOSE_ACTIVE;
sel.target = V4L2_SEL_TGT_COMPOSE;
sel.flags = V4L2_SEL_FLAG_LE;
ret = ioctl(fd, &VIDIOC-S-SELECTION;, &amp;sel);
if (ret)
@@ -298,11 +298,11 @@ V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> for other devices</para>
&v4l2-selection; compose = {
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
.target = V4L2_SEL_TGT_COMPOSE_ACTIVE,
.target = V4L2_SEL_TGT_COMPOSE,
};
&v4l2-selection; crop = {
.type = V4L2_BUF_TYPE_VIDEO_OUTPUT,
.target = V4L2_SEL_TGT_CROP_ACTIVE,
.target = V4L2_SEL_TGT_CROP,
};
double hscale, vscale;

164
Documentation/DocBook/media/v4l/selections-common.xml Normal file
View File

@@ -0,0 +1,164 @@
<section id="v4l2-selections-common">
<title>Common selection definitions</title>
<para>While the <link linkend="selection-api">V4L2 selection
API</link> and <link linkend="v4l2-subdev-selections">V4L2 subdev
selection APIs</link> are very similar, there's one fundamental
difference between the two. On sub-device API, the selection
rectangle refers to the media bus format, and is bound to a
sub-device's pad. On the V4L2 interface the selection rectangles
refer to the in-memory pixel format.</para>
<para>This section defines the common definitions of the
selection interfaces on the two APIs.</para>
<section id="v4l2-selection-targets">
<title>Selection targets</title>
<para>The precise meaning of the selection targets may be
dependent on which of the two interfaces they are used.</para>
<table pgwide="1" frame="none" id="v4l2-selection-targets-table">
<title>Selection target definitions</title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
&cs-def;
<thead>
<row rowsep="1">
<entry align="left">Target name</entry>
<entry align="left">id</entry>
<entry align="left">Definition</entry>
<entry align="left">Valid for V4L2</entry>
<entry align="left">Valid for V4L2 subdev</entry>
</row>
</thead>
<tbody valign="top">
<row>
<entry><constant>V4L2_SEL_TGT_CROP</constant></entry>
<entry>0x0000</entry>
<entry>Crop rectangle. Defines the cropped area.</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_CROP_DEFAULT</constant></entry>
<entry>0x0001</entry>
<entry>Suggested cropping rectangle that covers the "whole picture".</entry>
<entry>Yes</entry>
<entry>No</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_CROP_BOUNDS</constant></entry>
<entry>0x0002</entry>
<entry>Bounds of the crop rectangle. All valid crop
rectangles fit inside the crop bounds rectangle.
</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE</constant></entry>
<entry>0x0100</entry>
<entry>Compose rectangle. Used to configure scaling
and composition.</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_DEFAULT</constant></entry>
<entry>0x0101</entry>
<entry>Suggested composition rectangle that covers the "whole picture".</entry>
<entry>Yes</entry>
<entry>No</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
<entry>0x0102</entry>
<entry>Bounds of the compose rectangle. All valid compose
rectangles fit inside the compose bounds rectangle.</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_PADDED</constant></entry>
<entry>0x0103</entry>
<entry>The active area and all padding pixels that are inserted or
modified by hardware.</entry>
<entry>Yes</entry>
<entry>No</entry>
</row>
</tbody>
</tgroup>
</table>
</section>
<section id="v4l2-selection-flags">
<title>Selection flags</title>
<table pgwide="1" frame="none" id="v4l2-selection-flags-table">
<title>Selection flag definitions</title>
<tgroup cols="5">
<colspec colname="c1" />
<colspec colname="c2" />
<colspec colname="c3" />
<colspec colname="c4" />
<colspec colname="c5" />
&cs-def;
<thead>
<row rowsep="1">
<entry align="left">Flag name</entry>
<entry align="left">id</entry>
<entry align="left">Definition</entry>
<entry align="left">Valid for V4L2</entry>
<entry align="left">Valid for V4L2 subdev</entry>
</row>
</thead>
<tbody valign="top">
<row>
<entry><constant>V4L2_SEL_FLAG_GE</constant></entry>
<entry>(1 &lt;&lt; 0)</entry>
<entry>Suggest the driver it should choose greater or
equal rectangle (in size) than was requested. Albeit the
driver may choose a lesser size, it will only do so due to
hardware limitations. Without this flag (and
<constant>V4L2_SEL_FLAG_LE</constant>) the
behaviour is to choose the closest possible
rectangle.</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_FLAG_LE</constant></entry>
<entry>(1 &lt;&lt; 1)</entry>
<entry>Suggest the driver it
should choose lesser or equal rectangle (in size) than was
requested. Albeit the driver may choose a greater size, it
will only do so due to hardware limitations.</entry>
<entry>Yes</entry>
<entry>Yes</entry>
</row>
<row>
<entry><constant>V4L2_SEL_FLAG_KEEP_CONFIG</constant></entry>
<entry>(1 &lt;&lt; 2)</entry>
<entry>The configuration must not be propagated to any
further processing steps. If this flag is not given, the
configuration is propagated inside the subdevice to all
further processing steps.</entry>
<entry>No</entry>
<entry>Yes</entry>
</row>
</tbody>
</tgroup>
</table>
</section>
</section>

5
Documentation/DocBook/media/v4l/v4l2.xml
View File

@@ -589,6 +589,11 @@ and discussions on the V4L mailing list.</revremark>
&sub-write;
</appendix>
<appendix>
<title>Common definitions for V4L2 and V4L2 subdev interfaces</title>
&sub-selections-common;
</appendix>
<appendix id="videodev">
<title>Video For Linux Two Header File</title>
&sub-videodev2-h;

8
Documentation/DocBook/media/v4l/vidioc-create-bufs.xml
View File

@@ -97,7 +97,13 @@ information.</para>
<row>
<entry>__u32</entry>
<entry><structfield>count</structfield></entry>
<entry>The number of buffers requested or granted.</entry>
<entry>The number of buffers requested or granted. If count == 0, then
<constant>VIDIOC_CREATE_BUFS</constant> will set <structfield>index</structfield>
to the current number of created buffers, and it will check the validity of
<structfield>memory</structfield> and <structfield>format.type</structfield>.
If those are invalid -1 is returned and errno is set to &EINVAL;,
otherwise <constant>VIDIOC_CREATE_BUFS</constant> returns 0. It will
never set errno to &EBUSY; in this particular case.</entry>
</row>
<row>
<entry>__u32</entry>

6
Documentation/DocBook/media/v4l/vidioc-g-frequency.xml
View File

@@ -135,6 +135,12 @@ bounds or the value in the <structfield>type</structfield> field is
wrong.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>EBUSY</errorcode></term>
<listitem>
<para>A hardware seek is in progress.</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
</refentry>

86
Documentation/DocBook/media/v4l/vidioc-g-selection.xml
View File

@@ -65,9 +65,9 @@ Do not use multiplanar buffers. Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
</constant>. Use <constant> V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> instead of
<constant> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE </constant>. The next step is
setting the value of &v4l2-selection; <structfield>target</structfield> field
to <constant> V4L2_SEL_TGT_CROP_ACTIVE </constant> (<constant>
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant>). Please refer to table <xref
linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
to <constant> V4L2_SEL_TGT_CROP </constant> (<constant>
V4L2_SEL_TGT_COMPOSE </constant>). Please refer to table <xref
linkend="v4l2-selections-common" /> or <xref linkend="selection-api" /> for additional
targets. The <structfield>flags</structfield> and <structfield>reserved
</structfield> fields of &v4l2-selection; are ignored and they must be filled
with zeros. The driver fills the rest of the structure or
@@ -86,9 +86,9 @@ use multiplanar buffers. Use <constant> V4L2_BUF_TYPE_VIDEO_CAPTURE
</constant>. Use <constant> V4L2_BUF_TYPE_VIDEO_OUTPUT </constant> instead of
<constant> V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE </constant>. The next step is
setting the value of &v4l2-selection; <structfield>target</structfield> to
<constant>V4L2_SEL_TGT_CROP_ACTIVE</constant> (<constant>
V4L2_SEL_TGT_COMPOSE_ACTIVE </constant>). Please refer to table <xref
linkend="v4l2-sel-target" /> or <xref linkend="selection-api" /> for additional
<constant>V4L2_SEL_TGT_CROP</constant> (<constant>
V4L2_SEL_TGT_COMPOSE </constant>). Please refer to table <xref
linkend="v4l2-selections-common" /> or <xref linkend="selection-api" /> for additional
targets. The &v4l2-rect; <structfield>r</structfield> rectangle need to be
set to the desired active area. Field &v4l2-selection; <structfield> reserved
</structfield> is ignored and must be filled with zeros. The driver may adjust
@@ -154,74 +154,8 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
</refsect1>
<refsect1>
<table frame="none" pgwide="1" id="v4l2-sel-target">
<title>Selection targets.</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_SEL_TGT_CROP_ACTIVE</constant></entry>
<entry>0x0000</entry>
<entry>The area that is currently cropped by hardware.</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_CROP_DEFAULT</constant></entry>
<entry>0x0001</entry>
<entry>Suggested cropping rectangle that covers the "whole picture".</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_CROP_BOUNDS</constant></entry>
<entry>0x0002</entry>
<entry>Limits for the cropping rectangle.</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_ACTIVE</constant></entry>
<entry>0x0100</entry>
<entry>The area to which data is composed by hardware.</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_DEFAULT</constant></entry>
<entry>0x0101</entry>
<entry>Suggested composing rectangle that covers the "whole picture".</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
<entry>0x0102</entry>
<entry>Limits for the composing rectangle.</entry>
</row>
<row>
<entry><constant>V4L2_SEL_TGT_COMPOSE_PADDED</constant></entry>
<entry>0x0103</entry>
<entry>The active area and all padding pixels that are inserted or modified by hardware.</entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
<refsect1>
<table frame="none" pgwide="1" id="v4l2-sel-flags">
<title>Selection constraint flags</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_SEL_FLAG_GE</constant></entry>
<entry>0x00000001</entry>
<entry>Indicates that the adjusted rectangle must contain the original
&v4l2-selection; <structfield>r</structfield> rectangle.</entry>
</row>
<row>
<entry><constant>V4L2_SEL_FLAG_LE</constant></entry>
<entry>0x00000002</entry>
<entry>Indicates that the adjusted rectangle must be inside the original
&v4l2-rect; <structfield>r</structfield> rectangle.</entry>
</row>
</tbody>
</tgroup>
</table>
</refsect1>
<para>Selection targets and flags are documented in <xref
linkend="v4l2-selections-common"/>.</para>
<section>
<figure id="sel-const-adjust">
@@ -252,14 +186,14 @@ exist no rectangle </emphasis> that satisfies the constraints.</para>
<row>
<entry>__u32</entry>
<entry><structfield>target</structfield></entry>
<entry>Used to select between <link linkend="v4l2-sel-target"> cropping
<entry>Used to select between <link linkend="v4l2-selections-common"> cropping
and composing rectangles</link>.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry>Flags controlling the selection rectangle adjustments, refer to
<link linkend="v4l2-sel-flags">selection flags</link>.</entry>
<link linkend="v4l2-selection-flags">selection flags</link>.</entry>
</row>
<row>
<entry>&v4l2-rect;</entry>

12
Documentation/DocBook/media/v4l/vidioc-g-tuner.xml
View File

@@ -275,6 +275,18 @@ can or must be switched. (B/G PAL tuners for example are typically not
see the description of ioctl &VIDIOC-ENUMINPUT; for details. Only
<constant>V4L2_TUNER_ANALOG_TV</constant> tuners can have this capability.</entry>
</row>
<row>
<entry><constant>V4L2_TUNER_CAP_HWSEEK_BOUNDED</constant></entry>
<entry>0x0004</entry>
<entry>If set, then this tuner supports the hardware seek functionality
where the seek stops when it reaches the end of the frequency range.</entry>
</row>
<row>
<entry><constant>V4L2_TUNER_CAP_HWSEEK_WRAP</constant></entry>
<entry>0x0008</entry>
<entry>If set, then this tuner supports the hardware seek functionality
where the seek wraps around when it reaches the end of the frequency range.</entry>
</row>
<row>
<entry><constant>V4L2_TUNER_CAP_STEREO</constant></entry>
<entry>0x0010</entry>

9
Documentation/DocBook/media/v4l/vidioc-qbuf.xml
View File

@@ -71,12 +71,9 @@ initialize the <structfield>bytesused</structfield>,
<structfield>field</structfield> and
<structfield>timestamp</structfield> fields, see <xref
linkend="buffer" /> for details.
Applications must also set <structfield>flags</structfield> to 0. If a driver
supports capturing from specific video inputs and you want to specify a video
input, then <structfield>flags</structfield> should be set to
<constant>V4L2_BUF_FLAG_INPUT</constant> and the field
<structfield>input</structfield> must be initialized to the desired input.
The <structfield>reserved</structfield> field must be set to 0. When using
Applications must also set <structfield>flags</structfield> to 0.
The <structfield>reserved2</structfield> and
<structfield>reserved</structfield> fields must be set to 0. When using
the <link linkend="planar-apis">multi-planar API</link>, the
<structfield>m.planes</structfield> field must contain a userspace pointer
to a filled-in array of &v4l2-plane; and the <structfield>length</structfield>

18
Documentation/DocBook/media/v4l/vidioc-s-hw-freq-seek.xml
View File

@@ -58,6 +58,9 @@ To do this applications initialize the <structfield>tuner</structfield>,
call the <constant>VIDIOC_S_HW_FREQ_SEEK</constant> ioctl with a pointer
to this structure.</para>
<para>If an error is returned, then the original frequency will
be restored.</para>
<para>This ioctl is supported if the <constant>V4L2_CAP_HW_FREQ_SEEK</constant> capability is set.</para>
<table pgwide="1" frame="none" id="v4l2-hw-freq-seek">
@@ -87,7 +90,10 @@ field and the &v4l2-tuner; <structfield>index</structfield> field.</entry>
<row>
<entry>__u32</entry>
<entry><structfield>wrap_around</structfield></entry>
<entry>If non-zero, wrap around when at the end of the frequency range, else stop seeking.</entry>
<entry>If non-zero, wrap around when at the end of the frequency range, else stop seeking.
The &v4l2-tuner; <structfield>capability</structfield> field will tell you what the
hardware supports.
</entry>
</row>
<row>
<entry>__u32</entry>
@@ -118,9 +124,15 @@ wrong.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>EAGAIN</errorcode></term>
<term><errorcode>ENODATA</errorcode></term>
<listitem>
<para>The ioctl timed-out. Try again.</para>
<para>The hardware seek found no channels.</para>
</listitem>
</varlistentry>
<varlistentry>
<term><errorcode>EBUSY</errorcode></term>
<listitem>
<para>Another hardware seek is already in progress.</para>
</listitem>
</varlistentry>
</variablelist>

79
Documentation/DocBook/media/v4l/vidioc-subdev-g-selection.xml
View File

@@ -72,10 +72,10 @@
<section>
<title>Types of selection targets</title>
<para>There are two types of selection targets: actual and bounds.
The ACTUAL targets are the targets which configure the hardware.
The BOUNDS target will return a rectangle that contain all
possible ACTUAL rectangles.</para>
<para>There are two types of selection targets: actual and bounds. The
actual targets are the targets which configure the hardware. The BOUNDS
target will return a rectangle that contain all possible actual
rectangles.</para>
</section>
<section>
@@ -87,71 +87,8 @@
<constant>EINVAL</constant>.</para>
</section>
<table pgwide="1" frame="none" id="v4l2-subdev-selection-targets">
<title>V4L2 subdev selection targets</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_SUBDEV_SEL_TGT_CROP_ACTUAL</constant></entry>
<entry>0x0000</entry>
<entry>Actual crop. Defines the cropping
performed by the processing step.</entry>
</row>
<row>
<entry><constant>V4L2_SUBDEV_SEL_TGT_CROP_BOUNDS</constant></entry>
<entry>0x0002</entry>
<entry>Bounds of the crop rectangle.</entry>
</row>
<row>
<entry><constant>V4L2_SUBDEV_SEL_TGT_COMPOSE_ACTUAL</constant></entry>
<entry>0x0100</entry>
<entry>Actual compose rectangle. Used to configure scaling
on sink pads and composition on source pads.</entry>
</row>
<row>
<entry><constant>V4L2_SUBDEV_SEL_TGT_COMPOSE_BOUNDS</constant></entry>
<entry>0x0102</entry>
<entry>Bounds of the compose rectangle.</entry>
</row>
</tbody>
</tgroup>
</table>
<table pgwide="1" frame="none" id="v4l2-subdev-selection-flags">
<title>V4L2 subdev selection flags</title>
<tgroup cols="3">
&cs-def;
<tbody valign="top">
<row>
<entry><constant>V4L2_SUBDEV_SEL_FLAG_SIZE_GE</constant></entry>
<entry>(1 &lt;&lt; 0)</entry> <entry>Suggest the driver it
should choose greater or equal rectangle (in size) than
was requested. Albeit the driver may choose a lesser size,
it will only do so due to hardware limitations. Without
this flag (and
<constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant>) the
behaviour is to choose the closest possible
rectangle.</entry>
</row>
<row>
<entry><constant>V4L2_SUBDEV_SEL_FLAG_SIZE_LE</constant></entry>
<entry>(1 &lt;&lt; 1)</entry> <entry>Suggest the driver it
should choose lesser or equal rectangle (in size) than was
requested. Albeit the driver may choose a greater size, it
will only do so due to hardware limitations.</entry>
</row>
<row>
<entry><constant>V4L2_SUBDEV_SEL_FLAG_KEEP_CONFIG</constant></entry>
<entry>(1 &lt;&lt; 2)</entry>
<entry>The configuration should not be propagated to any
further processing steps. If this flag is not given, the
configuration is propagated inside the subdevice to all
further processing steps.</entry>
</row>
</tbody>
</tgroup>
</table>
<para>Selection targets and flags are documented in <xref
linkend="v4l2-selections-common"/>.</para>
<table pgwide="1" frame="none" id="v4l2-subdev-selection">
<title>struct <structname>v4l2_subdev_selection</structname></title>
@@ -173,13 +110,13 @@
<entry>__u32</entry>
<entry><structfield>target</structfield></entry>
<entry>Target selection rectangle. See
<xref linkend="v4l2-subdev-selection-targets">.</xref>.</entry>
<xref linkend="v4l2-selections-common" />.</entry>
</row>
<row>
<entry>__u32</entry>
<entry><structfield>flags</structfield></entry>
<entry>Flags. See
<xref linkend="v4l2-subdev-selection-flags">.</xref></entry>
<xref linkend="v4l2-selection-flags" />.</entry>
</row>
<row>
<entry>&v4l2-rect;</entry>