2.6.1.7. V4L2_PIX_FMT_SRGGB12 (‘RG12’), V4L2_PIX_FMT_SGRBG12 (‘BA12’), V4L2_PIX_FMT_SGBRG12 (‘GB12’), V4L2_PIX_FMT_SBGGR12 (‘BG12’),

V4L2_PIX_FMT_SGRBG12 V4L2_PIX_FMT_SGBRG12 V4L2_PIX_FMT_SBGGR12 12-bit Bayer formats expanded to 16 bits

2.6.1.7.1. Description

These four pixel formats are raw sRGB / Bayer formats with 12 bits per colour. Each colour component is stored in a 16-bit word, with 4 unused high bits filled with zeros. Each n-pixel row contains n/2 green samples and n/2 blue or red samples, with alternating red and blue rows. Bytes are stored in memory in little endian order. They are conventionally described as GRGR… BGBG…, RGRG… GBGB…, etc. Below is an example of a small V4L2_PIX_FMT_SBGGR12 image:

Byte Order. Each cell is one byte, the 4 most significant bits in the high bytes are 0.

start + 0:

B00low

B00high

G01low

G01high

B02low

B02high

G03low

G03high

start + 8:

G10low

G10high

R11low

R11high

G12low

G12high

R13low

R13high

start + 16:

B20low

B20high

G21low

G21high

B22low

B22high

G23low

G23high

start + 24:

G30low

G30high

R31low

R31high

G32low

G32high

R33low

R33high