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JeffyCN / rockchip_mirrors

Mirrors of a few Rockchip BSP repositories, some others in https://github.com/JeffyCN/mirrors.
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gstreamer NV24 support #28

Closed avafinger closed 1 year ago

avafinger commented 1 year ago

Hi @JeffyCN ,

Is there support for NV24 and which version? Can you share a pipeline?

JeffyCN commented 1 year ago

there's a commit about NV24:

commit 98da85ade042d8495a89f67ea164529f7c5918 55 Author: Nicolas Dufresne <nicolas.dufresne@co llabora.com> Date: Fri Sep 17 15:39:54 2021 -0400 kmssink: Add NV24 support

This was tested on RK3566 platform, using vendor DRM driver.
Part-of: <https://gitlab.freedesktop.org/

gstreamer/gst-plugins-bad/-/merge_requests/25 30>

avafinger commented 1 year ago

I applied that patch already (gst-plugins-bad1-1.20.3), but it failed to convert NV24 to NV12 using RGA. RK3588. That's why i asked you for a sample pipeline.

I wanted to capture video from HDMI (rk3588, board A) to HDMI-RX-IN (rk3588, board B) but for some reason, the hand-shake chose NV24 instead of BGR3, and i can't change it. In Kernel 5.10.66 i have the correct pixel format (BGR3), but not in 5.10.110 (NV24). It was even possible to make a loop between the HDMI out and HDMI In on kernel 5.10.66 to record video.

I cheated the HDMI-RX-IN with a capture device so i get BGR3 so i can capture a mkv video. that's why i don't have the full error saved, but it asked me to fill a bug report to gstreamer.

off-topic: Another issue i have is if the board have HDMI-1 and HDMI-2 while using Weston (wayland) the gstreamer output video to HDMI-A-1 but gstreamer capture video from HDMI-A-2. What i mean is i can't control where to output video with waylandsink/glimagesink/xvimnagesink. You may say with kmssink i can but i need waylandsink/glimagesink.

Anyway, is there a way to force HDMI out to choose NV12 when connected directly to HDMI-RX-IN? Any possible trick you would know?

Update: Interesting, i can switch from NV24 to BGR with: v4l2-ctl -d /dev/video20 --set-edid file=edid.txt,format=hex,ycbcr444

And now i can display the contents of hdmi-rx with: DISPLAY=:1.0 GST_VIDEO_CONVERT_USE_RGA=1 gst-launch-1.0 -e v4l2src device=/dev/video20 ! videoconvert ! waylandsink

avafinger commented 1 year ago

If you have a working pipeline for NV24 on rk3588, please suggest it. Also, if there is a way to choose the device to output the video stream in gstreamer, please suggest it.

I will close it now.