Table of Contents

maxLevel	1

The driver is tested with YUY2, NV16, NV12, RGB, GRAY8, UYVY and BGR Gstreamer formats only.
Please check section below on Stride and Height align.

Kernel Configuration

The following config options should be enabled in order to build Xilinx Multi-Scaler driver

CONFIG_VIDEO_XILINX

CONFIG_VIDEO_DEV

...

CONFIG_VIDEO_XILINX_MULTISCALER

To check if the options are enabled run the following:

Code Block

theme	Midnight

petalinux-config -c kernel

When the GUI opens, you can use '/' to search for each config.

The driver is available at,
https://github.com/Xilinx/linux-xlnx/blob/master/drivers/media/platform/xilinx/xilinx-multi-scaler.c

Device Tree Binding

The device tree node will be automatically generated, if the core is configured in the HW design, using the Device Tree BSP.

Steps to generate device-tree is documented here,
http://www.wiki.xilinx.com/Build+Device+Tree+Blob

And a sample binding is shown below and the description of DT property is documented here

Code Block

theme	Midnight

v_multi_scaler_1: v_multi_scaler@a0000000 {
          clock-names = "ap_clk";
          clocks = <&misc_clk_0>;
          compatible = "xlnx,v-multi-scaler-1.0", "xlnx,v-multi-scaler-v1.0";
          interrupt-names = "interrupt";
          interrupt-parent = <&gic>;
          interrupts = <0 89 4>;
          reg = <0x0 0xa0000000 0x0 0x20000>;
          reset-gpios = <&gpio 78 1>;
          xlnx,dma-addr-width = <0x20>;
          xlnx,max-chan = <8>;
          xlnx,max-height = <2160>;
          xlnx,max-width = <3840>;
          xlnx,num-taps = <12>;
          xlnx,pixels-per-clock = /bits/ 8 <2>;
          xlnx,vid-formats = "xrgb8888", "bgr888", "xbgr8888", "xbgr2101010", "uyvy", "y8", "y10", "vuy888", "xvuy8888", "yuvx2101010", "yuyv", "nv12", "nv16", "xv20", "xv15";
};

...

Code Block

language	bash
theme	Midnight

gst-launch-1.0 videotestsrc num-buffers=10 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video0convertv4l2convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=tmp0.rgb

...

Code Block

language	bash
theme	Midnight

gst-launch-1.0 videotestsrc num-buffers=10 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video0convertv4l2convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=640X480.rgb

...

Code Block

language	bash
theme	Midnight

#!/bin/bash
gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video1convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=tmp1.rgb &

sleep 3

gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video2convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=tmp2.rgb &

sleep 3

gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video3convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, 
width=640, height=480, format=RGB ! filesink location=tmp3.rgb &

sleep 3

gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video4convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=tmp4.rgb &

sleep 3

gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video5convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, 
width=640, height=480, format=RGB ! filesink location=tmp5.rgb &

sleep 3

gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video6convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=tmp6.rgb &

sleep 3

gst-launch-1.0 videotestsrc num-buffers=3 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video7convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, 
width=640, height=480, format=RGB ! filesink location=tmp7.rgb &

sleep 3

gst-launch-1.0  videotestsrc num-buffers=10 ! video/x-raw, width=1280, height=720, format=RGB ! v4l2video0convertv4l2convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, width=640, height=480, format=RGB ! filesink location=tmp0.rgb

...

Code Block

language	bash
theme	Midnight

#Create input file for abrscaler
gst-launch-1.0 videotestsrc 
num-buffers=10 ! video/x-raw, width=1280, height=720, format=RGB ! 
v4l2video0convertv4l2convert capture-io-mode=4 output-io-mode=4 ! video/x-raw, 
width=1920, height=1080, format=RGB ! filesink 
location=testsrc_rgb_time_10frames.rgb


#Run ABR Test
gst-launch-1.0 filesrc location=testsrc_rgb_time_10frames.rgb num-buffers=10 blocksize=6220800 do-timestamp=true ! "video/x-raw, width=1920, height=1080, format=RGB, framerate=30/1, interlace-mode=progressive, colorimetry=sRGB" ! xlnxabrscaler device="/dev/video0" name=sc \
sc.src_0 ! "video/x-raw, width=1600, height=900, format=RGB" ! queue ! filesink location=1600x900_rgb_50frames.rgb \
sc.src_1 ! "video/x-raw, width=1280, height=720, format=RGB" ! queue ! filesink location=1280x720_rgb_50frames.rgb \
sc.src_2 ! "video/x-raw, width=800, height=600, format=RGB" ! queue ! filesink location=800x600_rgb_50frames.rgb \
sc.src_3 ! "video/x-raw, width=832, height=480, format=RGB" ! queue ! filesink location=832x480_rgb_50frames.rgb \
sc.src_4 ! "video/x-raw, width=640, height=480, format=RGB" ! queue ! filesink location=640x480_rgb_50frames.rgb \
sc.src_5 ! "video/x-raw, width=480, height=320, format=RGB" ! queue ! filesink location=480x320_rgb_50frames.rgb \
sc.src_6 ! "video/x-raw, width=320, height=240, format=RGB" ! queue ! filesink location=320x240_rgb_50frames.rgb \
sc.src_7 ! "video/x-raw, width=176, height=144, format=RGB" ! queue ! filesink location=176x144_rgb_50frames.rgb

...

Change Log

2023.2

Summary
- Removed old documentation about gst-inspect.

2023.1

Summary
- Fix corruption for YUV422 8 and 10 bpc
Commits
- v4l: xilinx: multi-scaler:fix corruption for YUV422 8 and 10 bpc

2022.2

No changes

2022.1

Summary
- Fix warning for unchecked return value
Commits
- v4l: xilinx: multi-scaler: Fix warnings for unchecked return value

2021.2

Summary
- Change print level from error to debug
Commits
- v4l: xilinx: multi-scaler: change print level from error to debug

2021.1

No changes

2020.2

Summary
- Add streaming capabilities
- Derive caps from video node
- Fix Coverity warnings
Commits

2020.1

Summary
- Minor fixes
Commits
- v4l: xilinx: multi-scaler: fix a printk format specifier
- v4l: xilinx: multi-scaler: suppress info prints in vidioc_try_fmt API

2019.2

Summary
- No changes

2019.1

Summary:

...

2018.3

Summary:
- Add first version of driver.
Commits:
- 484cdb2 platform: xilinx: Add mem to mem Multi-Scaler driver (XM2MSC)

Versions Compared

Old Version 18

New Version Current

Key

Kernel Configuration

Device Tree Binding

Change Log

2023.2

2023.1

2022.2

2022.1

2021.2

2021.1

2020.2

2020.1

2019.2

2019.1

2018.3

Related Links

Page Comparison

Versions Compared

Old Version 18

New Version Current

Key

Kernel Configuration

Device Tree Binding

Change Log

2023.2

2023.1

2022.2

2022.1

2021.2

2021.1

2020.2

2020.1

2019.2

2019.1

2018.3

Related Links