mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-10 02:29:01 +00:00
211e7f2e6c
The old table is most definitely wrong. All applications and all drivers that I have ever tested follow the corrected table. Furthermore, that's what all applications expect as well. Any drivers that do not follow the corrected table are broken and should be fixed. This patch drops the old table and replaces it with the corrected table. This should prevent a lot of confusion. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
520 lines
20 KiB
XML
520 lines
20 KiB
XML
<refentry id="packed-rgb">
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<refmeta>
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<refentrytitle>Packed RGB formats</refentrytitle>
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&manvol;
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</refmeta>
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<refnamediv>
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<refname>Packed RGB formats</refname>
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<refpurpose>Packed RGB formats</refpurpose>
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</refnamediv>
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<refsect1>
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<title>Description</title>
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<para>These formats are designed to match the pixel formats of
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typical PC graphics frame buffers. They occupy 8, 16, 24 or 32 bits
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per pixel. These are all packed-pixel formats, meaning all the data
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for a pixel lie next to each other in memory.</para>
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<para>When one of these formats is used, drivers shall report the
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colorspace <constant>V4L2_COLORSPACE_SRGB</constant>.</para>
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<table pgwide="1" frame="none" id="rgb-formats">
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<title>Packed RGB Image Formats</title>
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<tgroup cols="37" align="center">
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<colspec colname="id" align="left" />
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<colspec colname="fourcc" />
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<colspec colname="bit" />
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<colspec colnum="4" colname="b07" align="center" />
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<colspec colnum="5" colname="b06" align="center" />
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<colspec colnum="6" colname="b05" align="center" />
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<colspec colnum="7" colname="b04" align="center" />
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<colspec colnum="8" colname="b03" align="center" />
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<colspec colnum="9" colname="b02" align="center" />
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<colspec colnum="10" colname="b01" align="center" />
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<colspec colnum="11" colname="b00" align="center" />
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<colspec colnum="13" colname="b17" align="center" />
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<colspec colnum="14" colname="b16" align="center" />
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<colspec colnum="15" colname="b15" align="center" />
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<colspec colnum="16" colname="b14" align="center" />
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<colspec colnum="17" colname="b13" align="center" />
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<colspec colnum="18" colname="b12" align="center" />
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<colspec colnum="19" colname="b11" align="center" />
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<colspec colnum="20" colname="b10" align="center" />
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<colspec colnum="22" colname="b27" align="center" />
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<colspec colnum="23" colname="b26" align="center" />
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<colspec colnum="24" colname="b25" align="center" />
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<colspec colnum="25" colname="b24" align="center" />
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<colspec colnum="26" colname="b23" align="center" />
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<colspec colnum="27" colname="b22" align="center" />
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<colspec colnum="28" colname="b21" align="center" />
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<colspec colnum="29" colname="b20" align="center" />
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<colspec colnum="31" colname="b37" align="center" />
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<colspec colnum="32" colname="b36" align="center" />
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<colspec colnum="33" colname="b35" align="center" />
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<colspec colnum="34" colname="b34" align="center" />
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<colspec colnum="35" colname="b33" align="center" />
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<colspec colnum="36" colname="b32" align="center" />
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<colspec colnum="37" colname="b31" align="center" />
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<colspec colnum="38" colname="b30" align="center" />
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<spanspec namest="b07" nameend="b00" spanname="b0" />
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<spanspec namest="b17" nameend="b10" spanname="b1" />
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<spanspec namest="b27" nameend="b20" spanname="b2" />
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<spanspec namest="b37" nameend="b30" spanname="b3" />
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<thead>
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<row>
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<entry>Identifier</entry>
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<entry>Code</entry>
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<entry> </entry>
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<entry spanname="b0">Byte 0 in memory</entry>
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<entry spanname="b1">Byte 1</entry>
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<entry spanname="b2">Byte 2</entry>
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<entry spanname="b3">Byte 3</entry>
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</row>
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<row>
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<entry> </entry>
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<entry> </entry>
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<entry>Bit</entry>
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<entry>7</entry>
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<entry>6</entry>
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<entry>5</entry>
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<entry>4</entry>
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<entry>3</entry>
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<entry>2</entry>
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<entry>1</entry>
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<entry>0</entry>
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<entry> </entry>
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<entry>7</entry>
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<entry>6</entry>
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<entry>5</entry>
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<entry>4</entry>
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<entry>3</entry>
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<entry>2</entry>
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<entry>1</entry>
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<entry>0</entry>
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<entry> </entry>
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<entry>7</entry>
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<entry>6</entry>
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<entry>5</entry>
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<entry>4</entry>
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<entry>3</entry>
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<entry>2</entry>
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<entry>1</entry>
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<entry>0</entry>
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<entry> </entry>
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<entry>7</entry>
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<entry>6</entry>
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<entry>5</entry>
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<entry>4</entry>
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<entry>3</entry>
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<entry>2</entry>
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<entry>1</entry>
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<entry>0</entry>
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</row>
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</thead>
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<tbody valign="top">
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<row id="V4L2-PIX-FMT-RGB332">
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<entry><constant>V4L2_PIX_FMT_RGB332</constant></entry>
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<entry>'RGB1'</entry>
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<entry></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB444">
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<entry><constant>V4L2_PIX_FMT_RGB444</constant></entry>
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<entry>'R444'</entry>
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<entry></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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<entry></entry>
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<entry>a<subscript>3</subscript></entry>
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<entry>a<subscript>2</subscript></entry>
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<entry>a<subscript>1</subscript></entry>
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<entry>a<subscript>0</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB555">
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<entry><constant>V4L2_PIX_FMT_RGB555</constant></entry>
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<entry>'RGBO'</entry>
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<entry></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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<entry></entry>
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<entry>a</entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB565">
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<entry><constant>V4L2_PIX_FMT_RGB565</constant></entry>
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<entry>'RGBP'</entry>
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<entry></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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<entry></entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry>g<subscript>5</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB555X">
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<entry><constant>V4L2_PIX_FMT_RGB555X</constant></entry>
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<entry>'RGBQ'</entry>
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<entry></entry>
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<entry>a</entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB565X">
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<entry><constant>V4L2_PIX_FMT_RGB565X</constant></entry>
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<entry>'RGBR'</entry>
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<entry></entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry>g<subscript>5</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-BGR666">
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<entry><constant>V4L2_PIX_FMT_BGR666</constant></entry>
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<entry>'BGRH'</entry>
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<entry></entry>
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<entry>b<subscript>5</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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<entry>g<subscript>5</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry>r<subscript>5</subscript></entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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<entry></entry>
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</row>
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<row id="V4L2-PIX-FMT-BGR24">
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<entry><constant>V4L2_PIX_FMT_BGR24</constant></entry>
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<entry>'BGR3'</entry>
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<entry></entry>
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<entry>b<subscript>7</subscript></entry>
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<entry>b<subscript>6</subscript></entry>
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<entry>b<subscript>5</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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<entry></entry>
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<entry>g<subscript>7</subscript></entry>
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<entry>g<subscript>6</subscript></entry>
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<entry>g<subscript>5</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry></entry>
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<entry>r<subscript>7</subscript></entry>
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<entry>r<subscript>6</subscript></entry>
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<entry>r<subscript>5</subscript></entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB24">
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<entry><constant>V4L2_PIX_FMT_RGB24</constant></entry>
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<entry>'RGB3'</entry>
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<entry></entry>
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<entry>r<subscript>7</subscript></entry>
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<entry>r<subscript>6</subscript></entry>
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<entry>r<subscript>5</subscript></entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry></entry>
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<entry>g<subscript>7</subscript></entry>
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<entry>g<subscript>6</subscript></entry>
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<entry>g<subscript>5</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry></entry>
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<entry>b<subscript>7</subscript></entry>
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<entry>b<subscript>6</subscript></entry>
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<entry>b<subscript>5</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-BGR32">
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<entry><constant>V4L2_PIX_FMT_BGR32</constant></entry>
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<entry>'BGR4'</entry>
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<entry></entry>
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<entry>b<subscript>7</subscript></entry>
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<entry>b<subscript>6</subscript></entry>
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<entry>b<subscript>5</subscript></entry>
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<entry>b<subscript>4</subscript></entry>
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<entry>b<subscript>3</subscript></entry>
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<entry>b<subscript>2</subscript></entry>
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<entry>b<subscript>1</subscript></entry>
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<entry>b<subscript>0</subscript></entry>
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<entry></entry>
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<entry>g<subscript>7</subscript></entry>
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<entry>g<subscript>6</subscript></entry>
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<entry>g<subscript>5</subscript></entry>
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<entry>g<subscript>4</subscript></entry>
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<entry>g<subscript>3</subscript></entry>
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<entry>g<subscript>2</subscript></entry>
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<entry>g<subscript>1</subscript></entry>
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<entry>g<subscript>0</subscript></entry>
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<entry></entry>
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<entry>r<subscript>7</subscript></entry>
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<entry>r<subscript>6</subscript></entry>
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<entry>r<subscript>5</subscript></entry>
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<entry>r<subscript>4</subscript></entry>
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<entry>r<subscript>3</subscript></entry>
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<entry>r<subscript>2</subscript></entry>
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<entry>r<subscript>1</subscript></entry>
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<entry>r<subscript>0</subscript></entry>
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<entry></entry>
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<entry>a<subscript>7</subscript></entry>
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<entry>a<subscript>6</subscript></entry>
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<entry>a<subscript>5</subscript></entry>
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<entry>a<subscript>4</subscript></entry>
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<entry>a<subscript>3</subscript></entry>
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<entry>a<subscript>2</subscript></entry>
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<entry>a<subscript>1</subscript></entry>
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<entry>a<subscript>0</subscript></entry>
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</row>
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<row id="V4L2-PIX-FMT-RGB32">
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<entry><constant>V4L2_PIX_FMT_RGB32</constant></entry>
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<entry>'RGB4'</entry>
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<entry></entry>
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<entry>a<subscript>7</subscript></entry>
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<entry>a<subscript>6</subscript></entry>
|
|
<entry>a<subscript>5</subscript></entry>
|
|
<entry>a<subscript>4</subscript></entry>
|
|
<entry>a<subscript>3</subscript></entry>
|
|
<entry>a<subscript>2</subscript></entry>
|
|
<entry>a<subscript>1</subscript></entry>
|
|
<entry>a<subscript>0</subscript></entry>
|
|
<entry></entry>
|
|
<entry>r<subscript>7</subscript></entry>
|
|
<entry>r<subscript>6</subscript></entry>
|
|
<entry>r<subscript>5</subscript></entry>
|
|
<entry>r<subscript>4</subscript></entry>
|
|
<entry>r<subscript>3</subscript></entry>
|
|
<entry>r<subscript>2</subscript></entry>
|
|
<entry>r<subscript>1</subscript></entry>
|
|
<entry>r<subscript>0</subscript></entry>
|
|
<entry></entry>
|
|
<entry>g<subscript>7</subscript></entry>
|
|
<entry>g<subscript>6</subscript></entry>
|
|
<entry>g<subscript>5</subscript></entry>
|
|
<entry>g<subscript>4</subscript></entry>
|
|
<entry>g<subscript>3</subscript></entry>
|
|
<entry>g<subscript>2</subscript></entry>
|
|
<entry>g<subscript>1</subscript></entry>
|
|
<entry>g<subscript>0</subscript></entry>
|
|
<entry></entry>
|
|
<entry>b<subscript>7</subscript></entry>
|
|
<entry>b<subscript>6</subscript></entry>
|
|
<entry>b<subscript>5</subscript></entry>
|
|
<entry>b<subscript>4</subscript></entry>
|
|
<entry>b<subscript>3</subscript></entry>
|
|
<entry>b<subscript>2</subscript></entry>
|
|
<entry>b<subscript>1</subscript></entry>
|
|
<entry>b<subscript>0</subscript></entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</table>
|
|
|
|
<para>Bit 7 is the most significant bit. The value of the a = alpha
|
|
bits is undefined when reading from the driver, ignored when writing
|
|
to the driver, except when alpha blending has been negotiated for a
|
|
<link linkend="overlay">Video Overlay</link> or <link linkend="osd">
|
|
Video Output Overlay</link> or when the alpha component has been configured
|
|
for a <link linkend="capture">Video Capture</link> by means of <link
|
|
linkend="v4l2-alpha-component"> <constant>V4L2_CID_ALPHA_COMPONENT
|
|
</constant> </link> control.</para>
|
|
|
|
<example>
|
|
<title><constant>V4L2_PIX_FMT_BGR24</constant> 4 × 4 pixel
|
|
image</title>
|
|
|
|
<formalpara>
|
|
<title>Byte Order.</title>
|
|
<para>Each cell is one byte.
|
|
<informaltable frame="none">
|
|
<tgroup cols="13" align="center">
|
|
<colspec align="left" colwidth="2*" />
|
|
<tbody valign="top">
|
|
<row>
|
|
<entry>start + 0:</entry>
|
|
<entry>B<subscript>00</subscript></entry>
|
|
<entry>G<subscript>00</subscript></entry>
|
|
<entry>R<subscript>00</subscript></entry>
|
|
<entry>B<subscript>01</subscript></entry>
|
|
<entry>G<subscript>01</subscript></entry>
|
|
<entry>R<subscript>01</subscript></entry>
|
|
<entry>B<subscript>02</subscript></entry>
|
|
<entry>G<subscript>02</subscript></entry>
|
|
<entry>R<subscript>02</subscript></entry>
|
|
<entry>B<subscript>03</subscript></entry>
|
|
<entry>G<subscript>03</subscript></entry>
|
|
<entry>R<subscript>03</subscript></entry>
|
|
</row>
|
|
<row>
|
|
<entry>start + 12:</entry>
|
|
<entry>B<subscript>10</subscript></entry>
|
|
<entry>G<subscript>10</subscript></entry>
|
|
<entry>R<subscript>10</subscript></entry>
|
|
<entry>B<subscript>11</subscript></entry>
|
|
<entry>G<subscript>11</subscript></entry>
|
|
<entry>R<subscript>11</subscript></entry>
|
|
<entry>B<subscript>12</subscript></entry>
|
|
<entry>G<subscript>12</subscript></entry>
|
|
<entry>R<subscript>12</subscript></entry>
|
|
<entry>B<subscript>13</subscript></entry>
|
|
<entry>G<subscript>13</subscript></entry>
|
|
<entry>R<subscript>13</subscript></entry>
|
|
</row>
|
|
<row>
|
|
<entry>start + 24:</entry>
|
|
<entry>B<subscript>20</subscript></entry>
|
|
<entry>G<subscript>20</subscript></entry>
|
|
<entry>R<subscript>20</subscript></entry>
|
|
<entry>B<subscript>21</subscript></entry>
|
|
<entry>G<subscript>21</subscript></entry>
|
|
<entry>R<subscript>21</subscript></entry>
|
|
<entry>B<subscript>22</subscript></entry>
|
|
<entry>G<subscript>22</subscript></entry>
|
|
<entry>R<subscript>22</subscript></entry>
|
|
<entry>B<subscript>23</subscript></entry>
|
|
<entry>G<subscript>23</subscript></entry>
|
|
<entry>R<subscript>23</subscript></entry>
|
|
</row>
|
|
<row>
|
|
<entry>start + 36:</entry>
|
|
<entry>B<subscript>30</subscript></entry>
|
|
<entry>G<subscript>30</subscript></entry>
|
|
<entry>R<subscript>30</subscript></entry>
|
|
<entry>B<subscript>31</subscript></entry>
|
|
<entry>G<subscript>31</subscript></entry>
|
|
<entry>R<subscript>31</subscript></entry>
|
|
<entry>B<subscript>32</subscript></entry>
|
|
<entry>G<subscript>32</subscript></entry>
|
|
<entry>R<subscript>32</subscript></entry>
|
|
<entry>B<subscript>33</subscript></entry>
|
|
<entry>G<subscript>33</subscript></entry>
|
|
<entry>R<subscript>33</subscript></entry>
|
|
</row>
|
|
</tbody>
|
|
</tgroup>
|
|
</informaltable>
|
|
</para>
|
|
</formalpara>
|
|
</example>
|
|
|
|
<para>A test utility to determine which RGB formats a driver
|
|
actually supports is available from the LinuxTV v4l-dvb repository.
|
|
See &v4l-dvb; for access instructions.</para>
|
|
|
|
</refsect1>
|
|
</refentry>
|