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:	B_00low	B_00high	G_01low	G_01high	B_02low	B_02high	G_03low	G_03high
start + 8:	G_10low	G_10high	R_11low	R_11high	G_12low	G_12high	R_13low	R_13high
start + 16:	B_20low	B_20high	G_21low	G_21high	B_22low	B_22high	G_23low	G_23high
start + 24:	G_30low	G_30high	R_31low	R_31high	G_32low	G_32high	R_33low	R_33high