Define the two new V4L2_PIX_FMT_NV16M (4:2:2 two-buffers) and
V4L2_PIX_FMT_NV24M (4:4:4 two-buffers)
pixel formats, the non-contiguous variants of the existing V4L2_PIX_FMT_NV16
and V4L2_PIX_FMT_NV24 formats.
Existing h/w IPs, such as decoders, operate on such separate luma and chroma
buffers.
Signed-off-by: Ilyes Gouta <ilyes.go...@gmail.com>
---
Documentation/DocBook/media/v4l/pixfmt-nv16m.xml | 166 +++++++++++++++++++++
Documentation/DocBook/media/v4l/pixfmt-nv24m.xml | 182 +++++++++++++++++++++++
Documentation/DocBook/media/v4l/pixfmt.xml | 2 +
include/linux/videodev2.h | 2 +
4 files changed, 352 insertions(+)
create mode 100644 Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
create mode 100644 Documentation/DocBook/media/v4l/pixfmt-nv24m.xml
diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
b/Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
new file mode 100644
index 0000000..76e48bf
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-nv16m.xml
@@ -0,0 +1,166 @@
+ <refentry id="V4L2-PIX-FMT-NV16M">
+ <refmeta>
+ <refentrytitle>V4L2_PIX_FMT_NV16M ('NM16')</refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname> <constant>V4L2_PIX_FMT_NV16M</constant></refname>
+ <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV16</constant> with
planes
+ non contiguous in memory. </refpurpose>
+ </refnamediv>
+ <refsect1>
+ <title>Description</title>
+
+ <para>This is a multi-planar, two-plane version of the YUV 4:2:2 format.
+The three components are separated into two sub-images or planes.
+<constant>V4L2_PIX_FMT_NV16M</constant> differs from
<constant>V4L2_PIX_FMT_NV16
+</constant> in that the two planes are non-contiguous in memory, i.e. the
chroma
+plane do not necessarily immediately follows the luma plane.
+The luminance data occupies the first plane. The Y plane has one byte per
pixel.
+In the second plane there is a chrominance data with alternating chroma
samples.
+The CbCr plane has the same width and height, in bytes, as the Y plane (and of
the image).
+Each CbCr pair belongs to two pixels. For example,
+Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to
+Y<subscript>00</subscript>, Y'<subscript>01</subscript>. </para>
+
+ <para><constant>V4L2_PIX_FMT_NV16M</constant> is intended to be
+used only in drivers and applications that support the multi-planar API,
+described in <xref linkend="planar-apis"/>. </para>
+
+ <para>If the Y plane has pad bytes after each row, then the
+CbCr plane has as many pad bytes after its rows.</para>
+
+ <example>
+ <title><constant>V4L2_PIX_FMT_NV16M</constant> 4 × 4 pixel
image</title>
+
+ <formalpara>
+ <title>Byte Order.</title>
+ <para>Each cell is one byte.
+ <informaltable frame="none">
+ <tgroup cols="5" align="center">
+ <colspec align="left" colwidth="2*" />
+ <tbody valign="top">
+ <row>
+ <entry>start0 + 0:</entry>
+ <entry>Y'<subscript>00</subscript></entry>
+ <entry>Y'<subscript>01</subscript></entry>
+ <entry>Y'<subscript>02</subscript></entry>
+ <entry>Y'<subscript>03</subscript></entry>
+ </row>
+ <row>
+ <entry>start0 + 4:</entry>
+ <entry>Y'<subscript>10</subscript></entry>
+ <entry>Y'<subscript>11</subscript></entry>
+ <entry>Y'<subscript>12</subscript></entry>
+ <entry>Y'<subscript>13</subscript></entry>
+ </row>
+ <row>
+ <entry>start0 + 8:</entry>
+ <entry>Y'<subscript>20</subscript></entry>
+ <entry>Y'<subscript>21</subscript></entry>
+ <entry>Y'<subscript>22</subscript></entry>
+ <entry>Y'<subscript>23</subscript></entry>
+ </row>
+ <row>
+ <entry>start0 + 12:</entry>
+ <entry>Y'<subscript>30</subscript></entry>
+ <entry>Y'<subscript>31</subscript></entry>
+ <entry>Y'<subscript>32</subscript></entry>
+ <entry>Y'<subscript>33</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>start1 + 0:</entry>
+ <entry>Cb<subscript>00</subscript></entry>
+ <entry>Cr<subscript>00</subscript></entry>
+ <entry>Cb<subscript>01</subscript></entry>
+ <entry>Cr<subscript>01</subscript></entry>
+ </row>
+ <row>
+ <entry>start1 + 4:</entry>
+ <entry>Cb<subscript>10</subscript></entry>
+ <entry>Cr<subscript>10</subscript></entry>
+ <entry>Cb<subscript>11</subscript></entry>
+ <entry>Cr<subscript>11</subscript></entry>
+ </row>
+ <row>
+ <entry>start1 + 8:</entry>
+ <entry>Cb<subscript>20</subscript></entry>
+ <entry>Cr<subscript>20</subscript></entry>
+ <entry>Cb<subscript>21</subscript></entry>
+ <entry>Cr<subscript>21</subscript></entry>
+ </row>
+ <row>
+ <entry>start1 + 12:</entry>
+ <entry>Cb<subscript>30</subscript></entry>
+ <entry>Cr<subscript>30</subscript></entry>
+ <entry>Cb<subscript>31</subscript></entry>
+ <entry>Cr<subscript>31</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+
+ <formalpara>
+ <title>Color Sample Location.</title>
+ <para>
+ <informaltable frame="none">
+ <tgroup cols="7" align="center">
+ <tbody valign="top">
+ <row>
+ <entry></entry>
+
<entry>0</entry><entry></entry><entry>1</entry><entry></entry>
+ <entry>2</entry><entry></entry><entry>3</entry>
+ </row>
+ <row>
+ <entry>0</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+
<entry></entry><entry>C</entry><entry></entry><entry></entry>
+ <entry></entry><entry>C</entry><entry></entry>
+ </row>
+ <row>
+ <entry>1</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry><entry>C</entry><entry></entry><entry></entry>
+ <entry></entry><entry>C</entry><entry></entry>
+ </row>
+ <row>
+ <entry>2</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+
<entry></entry><entry>C</entry><entry></entry><entry></entry>
+ <entry></entry><entry>C</entry><entry></entry>
+ </row>
+ <row>
+ <entry>3</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry></entry><entry>C</entry><entry></entry><entry></entry>
+ <entry></entry><entry>C</entry><entry></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+ </example>
+ </refsect1>
+ </refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt-nv24m.xml
b/Documentation/DocBook/media/v4l/pixfmt-nv24m.xml
new file mode 100644
index 0000000..51b06d1
--- /dev/null
+++ b/Documentation/DocBook/media/v4l/pixfmt-nv24m.xml
@@ -0,0 +1,182 @@
+ <refentry id="V4L2-PIX-FMT-NV24M">
+ <refmeta>
+ <refentrytitle>V4L2_PIX_FMT_NV24M ('NM24')</refentrytitle>
+ &manvol;
+ </refmeta>
+ <refnamediv>
+ <refname> <constant>V4L2_PIX_FMT_NV24M</constant></refname>
+ <refpurpose>Variation of <constant>V4L2_PIX_FMT_NV24</constant> with
planes
+ non contiguous in memory. </refpurpose>
+ </refnamediv>
+ <refsect1>
+ <title>Description</title>
+
+ <para>This is a multi-planar, two-plane version of the YUV 4:4:4 format.
+The three components are separated into two sub-images or planes.
+<constant>V4L2_PIX_FMT_NV24M</constant> differs from
<constant>V4L2_PIX_FMT_NV24
+</constant> in that the two planes are non-contiguous in memory, i.e. the
chroma
+plane do not necessarily immediately follows the luma plane.
+The luminance data occupies the first plane. The Y plane has one byte per
pixel.
+In the second plane there is a chrominance data with alternating chroma
samples.
+The CbCr plane has the double of the width (in bytes) and the same height of
the
+Y plane. Each CbCr pair belongs to one pixel. For example,
+Cb<subscript>0</subscript>/Cr<subscript>0</subscript> belongs to
+Y'<subscript>00</subscript>. </para>
+
+ <para><constant>V4L2_PIX_FMT_NV24M</constant> is intended to be
+used only in drivers and applications that support the multi-planar API,
+described in <xref linkend="planar-apis"/>. </para>
+
+ <para>If the Y plane has pad bytes after each row, then the
+CbCr plane has as many pad bytes after its rows.</para>
+
+ <example>
+ <title><constant>V4L2_PIX_FMT_NV24M</constant> 4 × 4 pixel
image</title>
+
+ <formalpara>
+ <title>Byte Order.</title>
+ <para>Each cell is one byte.
+ <informaltable frame="none">
+ <tgroup cols="5" align="center">
+ <colspec align="left" colwidth="2*" />
+ <tbody valign="top">
+ <row>
+ <entry>start0 + 0:</entry>
+ <entry>Y'<subscript>00</subscript></entry>
+ <entry>Y'<subscript>01</subscript></entry>
+ <entry>Y'<subscript>02</subscript></entry>
+ <entry>Y'<subscript>03</subscript></entry>
+ </row>
+ <row>
+ <entry>start0 + 4:</entry>
+ <entry>Y'<subscript>10</subscript></entry>
+ <entry>Y'<subscript>11</subscript></entry>
+ <entry>Y'<subscript>12</subscript></entry>
+ <entry>Y'<subscript>13</subscript></entry>
+ </row>
+ <row>
+ <entry>start0 + 8:</entry>
+ <entry>Y'<subscript>20</subscript></entry>
+ <entry>Y'<subscript>21</subscript></entry>
+ <entry>Y'<subscript>22</subscript></entry>
+ <entry>Y'<subscript>23</subscript></entry>
+ </row>
+ <row>
+ <entry>start0 + 12:</entry>
+ <entry>Y'<subscript>30</subscript></entry>
+ <entry>Y'<subscript>31</subscript></entry>
+ <entry>Y'<subscript>32</subscript></entry>
+ <entry>Y'<subscript>33</subscript></entry>
+ </row>
+ <row>
+ <entry></entry>
+ </row>
+ <row>
+ <entry>start1 + 0:</entry>
+ <entry>Cb<subscript>00</subscript></entry>
+ <entry>Cr<subscript>00</subscript></entry>
+ <entry>Cb<subscript>01</subscript></entry>
+ <entry>Cr<subscript>01</subscript></entry>
+ <entry>Cb<subscript>02</subscript></entry>
+ <entry>Cr<subscript>02</subscript></entry>
+ <entry>Cb<subscript>03</subscript></entry>
+ <entry>Cr<subscript>03</subscript></entry>
+ </row>
+ <row>
+ <entry>start1 + 8:</entry>
+ <entry>Cb<subscript>10</subscript></entry>
+ <entry>Cr<subscript>10</subscript></entry>
+ <entry>Cb<subscript>11</subscript></entry>
+ <entry>Cr<subscript>11</subscript></entry>
+ <entry>Cb<subscript>12</subscript></entry>
+ <entry>Cr<subscript>12</subscript></entry>
+ <entry>Cb<subscript>13</subscript></entry>
+ <entry>Cr<subscript>13</subscript></entry>
+ </row>
+ <row>
+ <entry>start1 + 16:</entry>
+ <entry>Cb<subscript>20</subscript></entry>
+ <entry>Cr<subscript>20</subscript></entry>
+ <entry>Cb<subscript>21</subscript></entry>
+ <entry>Cr<subscript>21</subscript></entry>
+ <entry>Cb<subscript>22</subscript></entry>
+ <entry>Cr<subscript>22</subscript></entry>
+ <entry>Cb<subscript>23</subscript></entry>
+ <entry>Cr<subscript>23</subscript></entry>
+ </row>
+ <row>
+ <entry>start1 + 24:</entry>
+ <entry>Cb<subscript>30</subscript></entry>
+ <entry>Cr<subscript>30</subscript></entry>
+ <entry>Cb<subscript>31</subscript></entry>
+ <entry>Cr<subscript>31</subscript></entry>
+ <entry>Cb<subscript>32</subscript></entry>
+ <entry>Cr<subscript>32</subscript></entry>
+ <entry>Cb<subscript>33</subscript></entry>
+ <entry>Cr<subscript>33</subscript></entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+
+ <formalpara>
+ <title>Color Sample Location.</title>
+ <para>
+ <informaltable frame="none">
+ <tgroup cols="7" align="center">
+ <tbody valign="top">
+ <row>
+ <entry></entry>
+
<entry>0</entry><entry></entry><entry>1</entry><entry></entry>
+ <entry>2</entry><entry></entry><entry>3</entry>
+ </row>
+ <row>
+ <entry>0</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry><entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry>
+ </row>
+ <row>
+ <entry>1</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry><entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry>
+ </row>
+ <row>
+ <entry>2</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry><entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry>
+ </row>
+ <row>
+ <entry>3</entry>
+
<entry>Y</entry><entry></entry><entry>Y</entry><entry></entry>
+ <entry>Y</entry><entry></entry><entry>Y</entry>
+ </row>
+ <row>
+ <entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry><entry></entry>
+ <entry>C</entry><entry></entry><entry>C</entry>
+ </row>
+ </tbody>
+ </tgroup>
+ </informaltable>
+ </para>
+ </formalpara>
+ </example>
+ </refsect1>
+ </refentry>
diff --git a/Documentation/DocBook/media/v4l/pixfmt.xml
b/Documentation/DocBook/media/v4l/pixfmt.xml
index e58934c..24e33db 100644
--- a/Documentation/DocBook/media/v4l/pixfmt.xml
+++ b/Documentation/DocBook/media/v4l/pixfmt.xml
@@ -713,6 +713,8 @@ information.</para>
&sub-yuv411p;
&sub-nv12;
&sub-nv12m;
+ &sub-nv16m;
+ &sub-nv24m;
&sub-nv12mt;
&sub-nv16;
&sub-nv24;
diff --git a/include/linux/videodev2.h b/include/linux/videodev2.h
index 5d78910..618bf50 100644
--- a/include/linux/videodev2.h
+++ b/include/linux/videodev2.h
@@ -360,6 +360,8 @@ struct v4l2_pix_format {
/* two non contiguous planes - one Y, one Cr + Cb interleaved */
#define V4L2_PIX_FMT_NV12M v4l2_fourcc('N', 'M', '1', '2') /* 12 Y/CbCr
4:2:0 */
+#define V4L2_PIX_FMT_NV16M v4l2_fourcc('N', 'M', '1', '6') /* 16 Y/CbCr
4:2:2 */
+#define V4L2_PIX_FMT_NV24M v4l2_fourcc('N', 'M', '2', '4') /* 24 Y/CbCr
4:4:4 */
#define V4L2_PIX_FMT_NV12MT v4l2_fourcc('T', 'M', '1', '2') /* 12 Y/CbCr
4:2:0 64x32 macroblocks */
/* three non contiguous planes - Y, Cb, Cr */
--
1.7.11.2
--
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