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--- products:sbc:vim4:add-ons:vim4-mipi-camera [2023/07/05 02:53]
nick
+++ products:sbc:vim4:add-ons:vim4-mipi-camera [2024/09/24 03:46] (current)
nick [Preview video on ubuntu desktop]
@@ Line 1: / Line 1: @@
+~~tag> VIM4 OpenCV V4l2 MIPI ISP ~~
 {{indexmenu_n>50}}
@@ Line 26: / Line 28: @@
 ```shell
-gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! video/x-raw,format=NV12 ! amlvenc bitrate=8000 ! h264parse ! qtmux ! filesink location=test_50.mp4
+gst-launch-1.0 -e v4l2src device=/dev/video50 io-mode=mmap num-buffers=300 ! video/x-raw,format=NV21,width=3840,height=2160,framerate=30/1 ! amlvenc bitrate=8000 ! h264parse ! qtmux ! filesink location=test_50.mp4
 ```
@@ Line 137: / Line 139: @@
 ./mipi /dev/video50
 ```
-===== Android =====
-WIP:
-====== New VIM4 MIPI Camera Usage ======
+==== Preview video on ubuntu desktop ====
-===== Linux =====
+<tabbox Ubuntu 24.04>
-==== Enable Overlays ====
+You can use gstreamer ''waylandsink'' to preview the video on Ubuntu Wayland desktop:
-If you want to use the OS08A10 MIPI camera, you need to enable it in [[products:sbc:vim4:configurations:device-tree-overlay|overlays]], you need to add ''vim4n-os08a10'' to ''fdt_overlays'' in ''/boot/dtb/amlogic/kvim4.dtb.overlay.env''.
+```shell
+gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap  ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! videoconvert ! waylandsink
 ```
-$ cat /boot/dtb/amlogic/kvim4.dtb.overlay.env
-fdt_overlays=vim4n-os08a10
-```
-And then reboot to take effect.
-==== Video Node ====
-The video node is ''/dev/media0''.
-==== Get Frames via Mediactl API ====
-You can get the test source code here: https://github.com/numbqq/v4l2_media_test
-Download and build the test source code:
-<tabbox 5.4 kernel>
+You can use the command below to check display fps:
 ```shell
-$ git clone https://github.com/numbqq/v4l2_media_test
+gst-launch-1.0 -v v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! fpsdisplaysink video-sink=waylandsink sync=false text-overlay=false
-$ cd v4l2_media_test
-$ git checkout e0482794337c01935593a91b621f9c42123cf175
-$ g++ v4l2_test_raw.cpp -o v4l2_test_raw  -Wall -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast -pthread -fPIE -lispaml -ldl -lmediaAPI -ltuning -lm -fPIC -D_FORTIFY_SOURCE=2 -O3
-$ ls v4l2_test_raw
-v4l2_test_raw
 ```
-<tabbox 5.15 kernel>
+<tabbox Ubuntu 22.04>
+You can use gstreamer ''clutterautovideosink'' to preview the video on Ubuntu Wayland desktop:
 ```shell
-$ git clone https://github.com/numbqq/v4l2_media_test
+gst-launch-1.0 v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! clutterautovideosink
-$ cd v4l2_media_test
-$ g++ v4l2_test_raw.cpp -o v4l2_test_raw  -Wall -Wno-int-to-pointer-cast -Wno-pointer-to-int-cast -pthread -fPIE -lispaml -ldl -lmediaAPI -ltuning -llens -lm -fPIC -D_FORTIFY_SOURCE=2 -O3
-$ ls v4l2_test_raw
-v4l2_test_raw
 ```
-</tabbox>
+You can use the command below to check display fps:
-Test:
 ```shell
-$ ./v4l2_test_raw -p 0 -n 10 -m /dev/media0
+gst-launch-1.0 -v v4l2src device=/dev/video50 io-mode=mmap ! video/x-raw,format=NV12,width=3840,height=2160,framerate=30/1 ! fpsdisplaysink video-sink=clutterautovideosink sync=false text-overlay=true
 ```
-It will capture 10 frames to file ''/tmp/dst_mif_0.yuv''.
+You press ''Alt + F7'' and then move mouse to move the windown.
-Preview the file:
+</tabbox>
-```shell
-$ ffplay -f rawvideo -pixel_format nv21 -video_size 3840x2160 /tmp/dst_mif_0.yuv
-```
 ===== Android =====
 WIP:

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