Per memory layer, there is a memory mapped AXI4 interface named
m_axi_mm_video
i
with
i
representing the layer number minus 1. The memory mapped AXI4 interface runs on the
ap_clk
clock domain. The signals follow the specification as defined in the
Vivado Design Suite: AXI Reference Guide
(UG1037)
[Ref 1]
.
Table: Pixel Formats
shows the pixel formats in memory supported by the Video Mixer.
Table 2-8:
Pixel Formats
|
Video Format
|
Description
|
Bits per Component
|
Bytes per Pixel
|
|
RGBX8
|
packed RGB
|
8
|
4 bytes per pixel
|
|
BGRX8
|
packed BGR
|
8
|
4 bytes per pixel
|
|
YUVX8
|
packed YUV 4:4:4
|
8
|
4 bytes per pixel
|
|
YUYV8
|
packed YUV 4:2:2
|
8
|
2 bytes per pixel
|
|
UYVY8
|
packed YUV 4:2:2
|
8
|
2 bytes per pixel
|
|
RGBA8
|
packed RGB with alpha
|
8
|
4 bytes per pixel
|
|
BGRA8
|
packed BGR with alpha
|
8
|
4 bytes per pixel
|
|
YUVA8
|
packed YUV 4:4:4
|
8
|
4 bytes per pixel
|
|
RGBX10
|
packed RGB
|
10
|
4 bytes per pixel
|
|
YUVX10
|
packed YUV 4:4:4
|
10
|
4 bytes per pixel
|
|
RGB565
|
packed RGB
|
5 bits per R component
6 bits per G component
5 bits per B component
|
2 bytes per pixel
|
|
BGR8
|
packed BGR
|
8
|
3 bytes per pixel
|
|
Y_UV8
|
semi-planar YUV 4:2:2
|
8
|
1 byte per pixel per plane
|
|
Y_UV8_420
|
semi-planar YUV 4:2:0
|
8
|
1 byte per pixel per plane
|
|
RGB8
|
packed RGB
|
8
|
3 bytes per pixel
|
|
YUV8
|
packed YUV 4:4:4
|
8
|
3 bytes per pixel
|
|
Y_UV10
|
semi-planar YUV 4:2:2
|
10
|
4 bytes per 3 pixels per plane
|
|
Y_UV10_420
|
semi-planar YUV 4:2:0
|
10
|
4 bytes per 3 pixels per plane
|
|
Y8
|
packed luma only
|
8
|
1 byte per pixel
|
|
Y10
|
packed luma only
|
10
|
4 bytes per 3 pixels
|
The following tables explain the expected pixel mappings in memory for each of the mentioned listed formats.