2.6.1.8. V4L2_PIX_FMT_SRGGB12P (‘pRCC’), V4L2_PIX_FMT_SGRBG12P (‘pgCC’), V4L2_PIX_FMT_SGBRG12P (‘pGCC’), V4L2_PIX_FMT_SBGGR12P (‘pBCC’),

2.6.1.8.1. 12-bit packed Bayer formats

2.6.1.8.1.1. Description

These four pixel formats are packed raw sRGB / Bayer formats with 12 bits per colour. Every two consecutive samples are packed into three bytes. Each of the first two bytes contain the 8 high order bits of the pixels, and the third byte contains the four least significants bits of each pixel, in the same order.

Each n-pixel row contains n/2 green samples and n/2 blue or red samples, with alternating green-red and green-blue rows. They are conventionally described as GRGR… BGBG…, RGRG… GBGB…, etc. Below is an example of a small V4L2_PIX_FMT_SBGGR12P image:

Byte Order. Each cell is one byte.

start + 0:

B00high

G01high

G01low(bits 7–4)

B00low(bits 3–0)

B02high

G03high

G03low(bits 7–4)

B02low(bits 3–0)

start + 6:

G10high

R11high

R11low(bits 7–4)

G10low(bits 3–0)

G12high

R13high

R13low(bits 3–2)

G12low(bits 3–0)

start + 12:

B20high

G21high

G21low(bits 7–4)

B20low(bits 3–0)

B22high

G23high

G23low(bits 7–4)

B22low(bits 3–0)

start + 18:

G30high

R31high

R31low(bits 7–4)

G30low(bits 3–0)

G32high

R33high

R33low(bits 3–2)

G32low(bits 3–0)