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Based on kernel version 3.13. Page generated on 2014-01-20 22:02 EST.

1	<refentry id="packed-yuv">
2	  <refmeta>
3	    <refentrytitle>Packed YUV formats</refentrytitle>
4	    &manvol;
5	  </refmeta>
6	  <refnamediv>
7	    <refname>Packed YUV formats</refname>
8	    <refpurpose>Packed YUV formats</refpurpose>
9	  </refnamediv>
10	  <refsect1>
11	    <title>Description</title>
12	
13	    <para>Similar to the packed RGB formats these formats store
14	the Y, Cb and Cr component of each pixel in one 16 or 32 bit
15	word.</para>
16	
17	    <table pgwide="1" frame="none">
18	      <title>Packed YUV Image Formats</title>
19	      <tgroup cols="37" align="center">
20		<colspec colname="id" align="left" />
21		<colspec colname="fourcc" />
22		<colspec colname="bit" />
23	
24		<colspec colnum="4" colname="b07" align="center" />
25		<colspec colnum="5" colname="b06" align="center" />
26		<colspec colnum="6" colname="b05" align="center" />
27		<colspec colnum="7" colname="b04" align="center" />
28		<colspec colnum="8" colname="b03" align="center" />
29		<colspec colnum="9" colname="b02" align="center" />
30		<colspec colnum="10" colname="b01" align="center" />
31		<colspec colnum="11" colname="b00" align="center" />
32	
33		<colspec colnum="13" colname="b17" align="center" />
34		<colspec colnum="14" colname="b16" align="center" />
35		<colspec colnum="15" colname="b15" align="center" />
36		<colspec colnum="16" colname="b14" align="center" />
37		<colspec colnum="17" colname="b13" align="center" />
38		<colspec colnum="18" colname="b12" align="center" />
39		<colspec colnum="19" colname="b11" align="center" />
40		<colspec colnum="20" colname="b10" align="center" />
41	
42		<colspec colnum="22" colname="b27" align="center" />
43		<colspec colnum="23" colname="b26" align="center" />
44		<colspec colnum="24" colname="b25" align="center" />
45		<colspec colnum="25" colname="b24" align="center" />
46		<colspec colnum="26" colname="b23" align="center" />
47		<colspec colnum="27" colname="b22" align="center" />
48		<colspec colnum="28" colname="b21" align="center" />
49		<colspec colnum="29" colname="b20" align="center" />
50	
51		<colspec colnum="31" colname="b37" align="center" />
52		<colspec colnum="32" colname="b36" align="center" />
53		<colspec colnum="33" colname="b35" align="center" />
54		<colspec colnum="34" colname="b34" align="center" />
55		<colspec colnum="35" colname="b33" align="center" />
56		<colspec colnum="36" colname="b32" align="center" />
57		<colspec colnum="37" colname="b31" align="center" />
58		<colspec colnum="38" colname="b30" align="center" />
59	
60		<spanspec namest="b07" nameend="b00" spanname="b0" />
61		<spanspec namest="b17" nameend="b10" spanname="b1" />
62		<spanspec namest="b27" nameend="b20" spanname="b2" />
63		<spanspec namest="b37" nameend="b30" spanname="b3" />
64		<thead>
65		  <row>
66		    <entry>Identifier</entry>
67		    <entry>Code</entry>
68		    <entry>&nbsp;</entry>
69		    <entry spanname="b0">Byte&nbsp;0 in memory</entry>
70		    <entry spanname="b1">Byte&nbsp;1</entry>
71		    <entry spanname="b2">Byte&nbsp;2</entry>
72		    <entry spanname="b3">Byte&nbsp;3</entry>
73		  </row>
74		  <row>
75		    <entry>&nbsp;</entry>
76		    <entry>&nbsp;</entry>
77		    <entry>Bit</entry>
78		    <entry>7</entry>
79		    <entry>6</entry>
80		    <entry>5</entry>
81		    <entry>4</entry>
82		    <entry>3</entry>
83		    <entry>2</entry>
84		    <entry>1</entry>
85		    <entry>0</entry>
86		    <entry>&nbsp;</entry>
87		    <entry>7</entry>
88		    <entry>6</entry>
89		    <entry>5</entry>
90		    <entry>4</entry>
91		    <entry>3</entry>
92		    <entry>2</entry>
93		    <entry>1</entry>
94		    <entry>0</entry>
95		    <entry>&nbsp;</entry>
96		    <entry>7</entry>
97		    <entry>6</entry>
98		    <entry>5</entry>
99		    <entry>4</entry>
100		    <entry>3</entry>
101		    <entry>2</entry>
102		    <entry>1</entry>
103		    <entry>0</entry>
104		    <entry>&nbsp;</entry>
105		    <entry>7</entry>
106		    <entry>6</entry>
107		    <entry>5</entry>
108		    <entry>4</entry>
109		    <entry>3</entry>
110		    <entry>2</entry>
111		    <entry>1</entry>
112		    <entry>0</entry>
113		  </row>
114		</thead>
115		<tbody valign="top">
116		  <row id="V4L2-PIX-FMT-YUV444">
117		    <entry><constant>V4L2_PIX_FMT_YUV444</constant></entry>
118		    <entry>'Y444'</entry>
119		    <entry></entry>
120		    <entry>Cb<subscript>3</subscript></entry>
121		    <entry>Cb<subscript>2</subscript></entry>
122		    <entry>Cb<subscript>1</subscript></entry>
123		    <entry>Cb<subscript>0</subscript></entry>
124		    <entry>Cr<subscript>3</subscript></entry>
125		    <entry>Cr<subscript>2</subscript></entry>
126		    <entry>Cr<subscript>1</subscript></entry>
127		    <entry>Cr<subscript>0</subscript></entry>
128		    <entry></entry>
129		    <entry>a<subscript>3</subscript></entry>
130		    <entry>a<subscript>2</subscript></entry>
131		    <entry>a<subscript>1</subscript></entry>
132		    <entry>a<subscript>0</subscript></entry>
133		    <entry>Y'<subscript>3</subscript></entry>
134		    <entry>Y'<subscript>2</subscript></entry>
135		    <entry>Y'<subscript>1</subscript></entry>
136		    <entry>Y'<subscript>0</subscript></entry>
137		  </row>
138	
139		  <row id="V4L2-PIX-FMT-YUV555">
140		    <entry><constant>V4L2_PIX_FMT_YUV555</constant></entry>
141		    <entry>'YUVO'</entry>
142		    <entry></entry>
143		    <entry>Cb<subscript>2</subscript></entry>
144		    <entry>Cb<subscript>1</subscript></entry>
145		    <entry>Cb<subscript>0</subscript></entry>
146		    <entry>Cr<subscript>4</subscript></entry>
147		    <entry>Cr<subscript>3</subscript></entry>
148		    <entry>Cr<subscript>2</subscript></entry>
149		    <entry>Cr<subscript>1</subscript></entry>
150		    <entry>Cr<subscript>0</subscript></entry>
151		    <entry></entry>
152		    <entry>a</entry>
153		    <entry>Y'<subscript>4</subscript></entry>
154		    <entry>Y'<subscript>3</subscript></entry>
155		    <entry>Y'<subscript>2</subscript></entry>
156		    <entry>Y'<subscript>1</subscript></entry>
157		    <entry>Y'<subscript>0</subscript></entry>
158		    <entry>Cb<subscript>4</subscript></entry>
159		    <entry>Cb<subscript>3</subscript></entry>
160		  </row>
161	
162		  <row id="V4L2-PIX-FMT-YUV565">
163		    <entry><constant>V4L2_PIX_FMT_YUV565</constant></entry>
164		    <entry>'YUVP'</entry>
165		    <entry></entry>
166		    <entry>Cb<subscript>2</subscript></entry>
167		    <entry>Cb<subscript>1</subscript></entry>
168		    <entry>Cb<subscript>0</subscript></entry>
169		    <entry>Cr<subscript>4</subscript></entry>
170		    <entry>Cr<subscript>3</subscript></entry>
171		    <entry>Cr<subscript>2</subscript></entry>
172		    <entry>Cr<subscript>1</subscript></entry>
173		    <entry>Cr<subscript>0</subscript></entry>
174		    <entry></entry>
175		    <entry>Y'<subscript>4</subscript></entry>
176		    <entry>Y'<subscript>3</subscript></entry>
177		    <entry>Y'<subscript>2</subscript></entry>
178		    <entry>Y'<subscript>1</subscript></entry>
179		    <entry>Y'<subscript>0</subscript></entry>
180		    <entry>Cb<subscript>5</subscript></entry>
181		    <entry>Cb<subscript>4</subscript></entry>
182		    <entry>Cb<subscript>3</subscript></entry>
183		  </row>
184	
185		  <row id="V4L2-PIX-FMT-YUV32">
186		    <entry><constant>V4L2_PIX_FMT_YUV32</constant></entry>
187		    <entry>'YUV4'</entry>
188		    <entry></entry>
189		    <entry>a<subscript>7</subscript></entry>
190		    <entry>a<subscript>6</subscript></entry>
191		    <entry>a<subscript>5</subscript></entry>
192		    <entry>a<subscript>4</subscript></entry>
193		    <entry>a<subscript>3</subscript></entry>
194		    <entry>a<subscript>2</subscript></entry>
195		    <entry>a<subscript>1</subscript></entry>
196		    <entry>a<subscript>0</subscript></entry>
197		    <entry></entry>
198		    <entry>Y'<subscript>7</subscript></entry>
199		    <entry>Y'<subscript>6</subscript></entry>
200		    <entry>Y'<subscript>5</subscript></entry>
201		    <entry>Y'<subscript>4</subscript></entry>
202		    <entry>Y'<subscript>3</subscript></entry>
203		    <entry>Y'<subscript>2</subscript></entry>
204		    <entry>Y'<subscript>1</subscript></entry>
205		    <entry>Y'<subscript>0</subscript></entry>
206		    <entry></entry>
207		    <entry>Cb<subscript>7</subscript></entry>
208		    <entry>Cb<subscript>6</subscript></entry>
209		    <entry>Cb<subscript>5</subscript></entry>
210		    <entry>Cb<subscript>4</subscript></entry>
211		    <entry>Cb<subscript>3</subscript></entry>
212		    <entry>Cb<subscript>2</subscript></entry>
213		    <entry>Cb<subscript>1</subscript></entry>
214		    <entry>Cb<subscript>0</subscript></entry>
215		    <entry></entry>
216		    <entry>Cr<subscript>7</subscript></entry>
217		    <entry>Cr<subscript>6</subscript></entry>
218		    <entry>Cr<subscript>5</subscript></entry>
219		    <entry>Cr<subscript>4</subscript></entry>
220		    <entry>Cr<subscript>3</subscript></entry>
221		    <entry>Cr<subscript>2</subscript></entry>
222		    <entry>Cr<subscript>1</subscript></entry>
223		    <entry>Cr<subscript>0</subscript></entry>
224		  </row>
225		</tbody>
226	      </tgroup>
227	    </table>
228	
229	    <para>Bit 7 is the most significant bit. The value of a = alpha
230	bits is undefined when reading from the driver, ignored when writing
231	to the driver, except when alpha blending has been negotiated for a
232	<link linkend="overlay">Video Overlay</link> or <link
233	linkend="osd">Video Output Overlay</link>.</para>
234	
235	  </refsect1>
236	    </refentry>
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