HDMI-IN

Neardi-3568 有一个 HDMI-IN 接口, 由 RK628芯片转换，支持标准的 HDMI2.0 协议，它具备以下的特性

支持HDMI 1.4/2.0、RGB、BT.1120等多种输入接口，最高支持4K@60fps的分辨率
支持HDCP 1.4、EDID、CEC等功能

Android 使用 HDMI-IN

默认版本无HDMI-IN功能，烧录Neardi-3568 HDMIIN 固件百度网盘烧录方法请参阅《使用USB线升级固件》一章。

烧录完成后打开系统Camera应用，即可验证HDMI-IN功能。

Linux 使用 HDMI-IN

Neardi-3568 HDMI-IN 默认节点是 /dev/video1。

依次执行以下几条命令，分辨率、format自行调节：

media-ctl -d /dev/media0 --set-v4l2 '"rkisp-isp-subdev":0[fmt:UYVY2X8/1920x1080]'
media-ctl -d /dev/media0 --set-v4l2 '"rkisp-isp-subdev":0[crop:(0,0)/1920x1080]'
v4l2-ctl -d /dev/video1 --set-selection=target=crop,top=0,left=0,width=1920,height=1080
sudo gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,format=NV12,width=1920,height=1080, framerate=30/1 ! fpsdisplaysink

执行成功返回结果：

sudo gst-launch-1.0 v4l2src device=/dev/video1 ! video/x-raw,format=NV12,width=800,height=600, framerate=30/1 ! fpsdisplaysink
Setting pipeline to PAUSED ...
Pipeline is live and does not need PREROLL ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
0:00:09.1 / 99:99:99.
0:00:09.2 / 99:99:99.
0:02:31.0 / 99:99:99..

../../_images/hdmiin-display.png

FAQ

RK628源码在哪里

SDK/kernel/drivers/gpu/drm/rockchip/rk628

Gstreamer命令如何修改帧率

sudo gst-launch-1.0 v4l2src device=/dev/video1 ! videorate ! video/x-raw,format=NV12,width=800,height=600, framerate=60/1 ! fpsdisplaysink
<<<<

修改framerate的值，60/1 为60帧。

如何保存mp4视频文件

gst-launch-1.0 v4l2src device=/dev/video1 ! videoconvert ! mpph264enc ! h264parse ! mp4mux  ! filesink location=/home/neardi/hdmiin_output.mp4 -e

HDMI-IN不显示

通过v4l2-ctl抓图验证

现象一：

v4l2-ctl -d /dev/video1  --set-fmt-video=width=1920,height=1080,pixelformat=NV12  --stream-mmap=3  --stream-skip=3  --stream-to=/hdmiin.out  --stream-count=1  --stream-poll

<<<<

返回<<<<说明硬件、HDMI线缆正常，再查看拓扑结构和Format。

查看拓扑结构：

media-ctl -p -d /dev/media0

查看Format：

v4l2-ctl -d 1 -V

现象二：

root@LPA3568:~# v4l2-ctl -d /dev/video1  --set-fmt-video=width=1920,height=1080,pixelformat=NV12  --stream-mmap=3  --stream-skip=3  --stream-to=/hdmiin.out  --stream-count=1  --stream-poll >/dev/null
The pixelformat 'NV24' is invalid
could not open /tmp/cif5.out for writing
            VIDIOC_STREAMON returned -1 (No such device)

返回returned -1 (No such device)检查RK628芯片有没有贴，有一版硬件移除了HDMIIN功能。

../../_images/rk3568_rk628.png

现象三：

[ 2513.698723] rk628-combrxphy rk628-combrxphy: clk det over cnt:10, reg_0x6654:0x501f0000
[ 2513.699309] rk628-combrxphy rk628-combrxphy: clock detected failed, cfg resistance manual!
[ 2513.760930] rk628-combrxphy rk628-combrxphy: err, clk not stable, reg_0x6630:0x87000d, reg_0x6608:0x110100
[ 2513.761013] phy phy-rk628-combrxphy.9: phy poweron failed --> -22
[ 2513.761041] m00_b_rk628-csi rk628-csi: hdmi rxphy power on failed
[ 2513.926751] m00_b_rk628-csi rk628-csi: rk628_hdmirx_phy_setup hdmi rxphy lock failed, retry:2

检查输入源是否休眠了。

现象四：

v4l2-ctl -d /dev/video1  --set-fmt-video=width=1920,height=1080,pixelformat=NV12  --stream-mmap=3  --stream-skip=3  --stream-to=/tmp/hdmiin.out  --stream-count=1  --stream-poll

select timeout

返回select timeout，检查HDMIIN线缆是否插紧或换一根线。

查看HDMIIN配置

neardi@LPA3568:~$ media-ctl -d /dev/media0 -p
Media controller API version 4.19.255

Media device information
------------------------
driver          rkisp-vir0
model           rkisp0
serial          
bus info        
hw revision     0x0
driver version  4.19.255

Device topology
- entity 1: rkisp-isp-subdev (4 pads, 7 links)
            type V4L2 subdev subtype Unknown flags 0
            device node name /dev/v4l-subdev0
   pad0: Sink
      [fmt:UYVY8_2X8/1920x1080 field:none
       crop.bounds:(0,0)/1920x1080
       crop:(0,0)/1920x1080]
       
   ...

- entity 67: rockchip-csi2-dphy0 (2 pads, 2 links)
             type V4L2 subdev subtype Unknown flags 0
             device node name /dev/v4l-subdev2
   pad0: Sink
      [fmt:UYVY8_2X8/3840x2160@10000/300000 field:none]
      <- "m00_b_rk628-csi rk628-csi":0 [ENABLED]
   pad1: Source
      [fmt:UYVY8_2X8/3840x2160@10000/300000 field:none]
      -> "rkisp-csi-subdev":0 [ENABLED]

- entity 70: m00_b_rk628-csi rk628-csi (1 pad, 1 link)
             type V4L2 subdev subtype Sensor flags 0
             device node name /dev/v4l-subdev3
   pad0: Source
      [fmt:UYVY8_2X8/3840x2160@10000/300000 field:none]
      [dv.caps:BT.656/1120 min:1x1@0 max:10000x10000@400000000 stds:CEA-861,DMT,CVT,GTF caps:interlaced,progressive,reduced-blanking,custom]
      [dv.detect:BT.656/1120 3840x2160p30 (4400x2250) stds: flags:]
      [dv.current:BT.656/1120 3840x2160p15 (4400x4490) stds: flags:]
      -> "rockchip-csi2-dphy0":0 [ENABLED]

其中[dv.current:BT.656/1120 3840x2160p15 (4400x4490) stds: flags:]为当前分辨率及帧率。

若返回[dv.query:no-lock]，检查HDMIIN线缆是否插紧或换一根线。