| Mauro Carvalho Chehab | 8e080c2 | 2009-09-13 22:16:04 -0300 | [diff] [blame] | 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> </entry> |
| 69 | <entry spanname="b0">Byte 0 in memory</entry> |
| 70 | <entry spanname="b1">Byte 1</entry> |
| 71 | <entry spanname="b2">Byte 2</entry> |
| 72 | <entry spanname="b3">Byte 3</entry> |
| 73 | </row> |
| 74 | <row> |
| 75 | <entry> </entry> |
| 76 | <entry> </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> </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> </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> </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> |