Name
Packed YUV formats — Packed YUV formats
Description
Similar to the packed RGB formats these formats store
the Y, Cb and Cr component of each pixel in one 16 or 32 bit
word.
Table 2.18. Packed YUV Image Formats
| Identifier | Code | | Byte 0 in memory | | Byte 1 | | Byte 2 | | Byte 3 |
|---|
| | | Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 | | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|
V4L2_PIX_FMT_YUV444 | 'Y444' | | Cb3 | Cb2 | Cb1 | Cb0 | Cr3 | Cr2 | Cr1 | Cr0 | | a3 | a2 | a1 | a0 | Y'3 | Y'2 | Y'1 | Y'0 | | | | | | | | | | | | | | | | | |
V4L2_PIX_FMT_YUV555 | 'YUVO' | | Cb2 | Cb1 | Cb0 | Cr4 | Cr3 | Cr2 | Cr1 | Cr0 | | a | Y'4 | Y'3 | Y'2 | Y'1 | Y'0 | Cb4 | Cb3 | | | | | | | | | | | | | | | | | |
V4L2_PIX_FMT_YUV565 | 'YUVP' | | Cb2 | Cb1 | Cb0 | Cr4 | Cr3 | Cr2 | Cr1 | Cr0 | | Y'4 | Y'3 | Y'2 | Y'1 | Y'0 | Cb5 | Cb4 | Cb3 | | | | | | | | | | | | | | | | | |
V4L2_PIX_FMT_YUV32 | 'YUV4' | | a7 | a6 | a5 | a4 | a3 | a2 | a1 | a0 | | Y'7 | Y'6 | Y'5 | Y'4 | Y'3 | Y'2 | Y'1 | Y'0 | | Cb7 | Cb6 | Cb5 | Cb4 | Cb3 | Cb2 | Cb1 | Cb0 | | Cr7 | Cr6 | Cr5 | Cr4 | Cr3 | Cr2 | Cr1 | Cr0 |
Bit 7 is the most significant bit. The value of a = alpha
bits is undefined when reading from the driver, ignored when writing
to the driver, except when alpha blending has been negotiated for a
Video Overlay or Video Output Overlay.