sudo rpicam-hello works, but not with openCV 4.x.
Can't receive frame (stream end?). Exiting ... CV version = 4.9.0
$cat /boot/firmware/config.txt
camera_auto_detect=0
start_x=1
dtoverlay=ov5647
$ll /dev/video0
crw-rw-rw-+ 1 root video 81, 0 Jun 25 10:42 /dev/video0
$ll /dev/media0
crw-rw-rw-+ 1 root video 505, 0 Jun 25 10:42 /dev/media0
$cat /etc/udev/rules.d/xxx.rules
SUBSYSTEM=="dma_heap", GROUP="video", MODE="0660"
$sudo rpicam-hello --version
rpicam-apps build: 122b835fb927-intree 09-01-2024 (17:13:42)
libcamera build: v0.1.0+118-563cd78e
[0:38:57.836935566] [3136] INFO Camera camera_manager.cpp:284 libcamera v0.1.0+118-563cd78e
[0:38:57.912760444] [3140] WARN RPiSdn sdn.cpp:39 Using legacy SDN tuning - please consider moving SDN inside rpi.denoise
[0:38:57.921061837] [3140] INFO RPI vc4.cpp:444 Registered camera /base/soc/i2c0mux/i2c@1/ov5647@36 to Unicam device /dev/media0 and ISP device /dev/media1
[0:38:57.921561890] [3140] INFO RPI pipeline_base.cpp:1142 Using configuration file '/usr/local/share/libcamera/pipeline/rpi/vc4/rpi_apps.yaml'
Made X/EGL preview window
Mode selection for 1296:972:12:P
SGBRG10_CSI2P,640x480/0 - Score: 3296
SGBRG10_CSI2P,1296x972/0 - Score: 1000
SGBRG10_CSI2P,1920x1080/0 - Score: 1349.67
SGBRG10_CSI2P,2592x1944/0 - Score: 1567
Stream configuration adjusted
[0:38:58.602930195] [3136] INFO Camera camera.cpp:1183 configuring streams: (0) 1296x972-YUV420 (1) 1296x972-SGBRG10_CSI2P
[0:38:58.605066550] [3140] INFO RPI vc4.cpp:608 Sensor: /base/soc/i2c0mux/i2c@1/ov5647@36 - Selected sensor format: 1296x972-SGBRG10_1X10 - Selected unicam format: 1296x972-pGAA
$ sudo libcamera-hello --list-cameras
Available cameras
-----------------
0 : ov5647 [2592x1944 10-bit GBRG] (/base/soc/i2c0mux/i2c@1/ov5647@36)
Modes: 'SGBRG10_CSI2P' : 640x480 [58.92 fps - (16, 0)/2560x1920 crop]
1296x972 [43.25 fps - (0, 0)/2592x1944 crop]
1920x1080 [30.62 fps - (348, 434)/1928x1080 crop]
2592x1944 [15.63 fps - (0, 0)/2592x1944 crop]
