media/v4l/pixfmt-rgb.rst

9 These formats encode each pixel as a triplet of RGB values. They are packed
12 bits required to store a pixel is not aligned to a byte boundary, the data is
20 or a permutation thereof, collectively referred to as alpha formats) depend on
24 a meaningful value. Otherwise, when the device doesn't capture an alpha channel
25 but can set the alpha bit to a user-configurable value, the
28 the value specified by that control. Otherwise a corresponding format without
34 filled with meaningful values by applications. Otherwise a corresponding format
38 Formats that contain padding bits are named XRGB (or a permutation thereof).
44    - In all the tables that follow, bit 7 is the most significant bit in a byte.
46      respectively. 'a' denotes bits of the alpha component (if supported by the
54 based on the order of the RGB components as seen in a 8-, 16- or 32-bit word,
57 for each component. For instance, the RGB565 format stores a pixel in a 16-bit
59 R\ :sub:`0` G\ :sub:`5` G\ :sub:`4` G\ :sub:`3` G\ :sub:`2` G\ :sub:`1`
62 R\ :sub:`0` G\ :sub:`5` G\ :sub:`4` G\ :sub:`3`] followed by [G\ :sub:`2`
89       - 5
98       - 5
107       - 5
116       - 5
150       - a\ :sub:`3`
151       - a\ :sub:`2`
152       - a\ :sub:`1`
153       - a\ :sub:`0`
191       - a\ :sub:`3`
192       - a\ :sub:`2`
193       - a\ :sub:`1`
194       - a\ :sub:`0`
242       - a\ :sub:`3`
243       - a\ :sub:`2`
244       - a\ :sub:`1`
245       - a\ :sub:`0`
283       - a\ :sub:`3`
284       - a\ :sub:`2`
285       - a\ :sub:`1`
286       - a\ :sub:`0`
334       - a
378       - a
426       - a
470       - a
523       - g\ :sub:`5`
532       - a
583       - g\ :sub:`5`
601       - b\ :sub:`5`
607       - g\ :sub:`5`
614       - r\ :sub:`5`
647 of bits per pixel. For instance, RGB24 format stores a pixel with [R\ :sub:`7`
648 R\ :sub:`6` R\ :sub:`5` R\ :sub:`4` R\ :sub:`3` R\ :sub:`2` R\ :sub:`1`
649 R\ :sub:`0`] in the first byte, [G\ :sub:`7` G\ :sub:`6` G\ :sub:`5` G\ :sub:`4`
651 [B\ :sub:`7` B\ :sub:`6` B\ :sub:`5` B\ :sub:`4` B\ :sub:`3` B\ :sub:`2`
653 nomenclature that instead use the order of components as seen in a 24- or
696       - A\ :sub:`7-0`
711       - A\ :sub:`7-0`
732       - A\ :sub:`7-0`
747       - A\ :sub:`7-0`
769 These formats store a 30-bit RGB triplet with an optional 2 bit alpha in four
770 bytes. They are named based on the order of the RGB components as seen in a
798       - 5
807       - 5
816       - 5
825       - 5
836       - b\ :sub:`5`
860       - g\ :sub:`5`
867       - r\ :sub:`5`
876       - b\ :sub:`5`
882       - a\ :sub:`1`
883       - a\ :sub:`0`
900       - g\ :sub:`5`
907       - r\ :sub:`5`
918       - b\ :sub:`5`
925       - g\ :sub:`5`
943       - a\ :sub:`1`
944       - a\ :sub:`0`
949       - r\ :sub:`5`
974       - Byte 5-4
993       - A\ :sub:`15-4`
1004 their alpha bits ``(a)`` is ill-defined and they are interpreted as in either
1034       - 5
1043       - 5
1052       - 5
1061       - 5
1081       - a\ :sub:`3`
1082       - a\ :sub:`2`
1083       - a\ :sub:`1`
1084       - a\ :sub:`0`
1104       - a
1118       - a
1143       - b\ :sub:`5`
1152       - g\ :sub:`5`
1161       - r\ :sub:`5`
1168       - a\ :sub:`7`
1169       - a\ :sub:`6`
1170       - a\ :sub:`5`
1171       - a\ :sub:`4`
1172       - a\ :sub:`3`
1173       - a\ :sub:`2`
1174       - a\ :sub:`1`
1175       - a\ :sub:`0`
1181       - a\ :sub:`7`
1182       - a\ :sub:`6`
1183       - a\ :sub:`5`
1184       - a\ :sub:`4`
1185       - a\ :sub:`3`
1186       - a\ :sub:`2`
1187       - a\ :sub:`1`
1188       - a\ :sub:`0`
1192       - r\ :sub:`5`
1201       - g\ :sub:`5`
1210       - b\ :sub:`5`
1221 A test utility to determine which RGB formats a driver actually supports