Packed YUV formats
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 2-1. 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.