Hi all,
Trying to run an OpenCV python script on a Raspberry Pi 4 with 7.3 and
4G of ram with a single 2K webcam.
I'm getting this when I try to set the camera to shoot at 2K resolution
(1920px x 1080px):
capture is open...
[ WARN:0@2.098] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.115] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.115] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.115] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.115] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.115] global cap_v4l.cpp:847 requestBuffers
VIDEOIO(V4L2:/dev/video0): Insufficient buffer memory
[ WARN:0@2.131] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.131] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.131] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.131] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.131] global cap_v4l.cpp:847 requestBuffers
VIDEOIO(V4L2:/dev/video0): Insufficient buffer memory
[ WARN:0@2.154] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.154] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.154] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.154] global cap_v4l.cpp:868 requestBuffers
VIDEOIO(V4L2:/dev/video0): no support for memory mapping
[ WARN:0@2.154] global cap_v4l.cpp:847 requestBuffers
VIDEOIO(V4L2:/dev/video0): Insufficient buffer memory
FPS: 30.00003000003, Height: 480.0, Width: 640.0, Exp: auto, Gain: auto,
AutoExp: -1.0, Frames: 3
Requested 1920 x 1080 and got 640 x 480.
I had a similar issue before with an amd64 stick:
https://marc.info/?l=openbsd-ports&m=162862043308236&w=2
This is OpenCV installed from packages:
jross@allsky:/home/jross $ pkg_info opencv
Information for inst:opencv-4.7.0
It would seem then that this problem isn't going away any time soon but
if someone has a workaround I'd love to hear it.
I had hoped to use the RPi4 to drive 5 of these 2K webcams to make an
allsky camera.
I have an amd64 with 16G of ram that I'll try next just in case there's
a big difference between amd64 and arm64.
Jeff
dmesg:
jross@allsky:/home/jross $ dmesg
OpenBSD 7.3 (GENERIC.MP) #2080: Sat Mar 25 14:20:25 MDT 2023
dera...@arm64.openbsd.org:/usr/src/sys/arch/arm64/compile/GENERIC.MP
real mem = 4124950528 (3933MB)
avail mem = 3963645952 (3780MB)
random: good seed from bootblocks
mainbus0 at root: Raspberry Pi 4 Model B Rev 1.5
cpu0 at mainbus0 mpidr 0: ARM Cortex-A72 r0p3
cpu0: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu0: 1024KB 64b/line 16-way L2 cache
cpu0: CRC32,ASID16
cpu1 at mainbus0 mpidr 1: ARM Cortex-A72 r0p3
cpu1: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu1: 1024KB 64b/line 16-way L2 cache
cpu1: CRC32,ASID16
cpu2 at mainbus0 mpidr 2: ARM Cortex-A72 r0p3
cpu2: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu2: 1024KB 64b/line 16-way L2 cache
cpu2: CRC32,ASID16
cpu3 at mainbus0 mpidr 3: ARM Cortex-A72 r0p3
cpu3: 48KB 64b/line 3-way L1 PIPT I-cache, 32KB 64b/line 2-way L1 D-cache
cpu3: 1024KB 64b/line 16-way L2 cache
cpu3: CRC32,ASID16
efi0 at mainbus0: UEFI 2.8
efi0: Das U-Boot rev 0x20211000
smbios0 at efi0: SMBIOS 3.0
smbios0: vendor U-Boot version "2021.10" date 10/01/2021
smbios0: Unknown Unknown Product
apm0 at mainbus0
"system" at mainbus0 not configured
"axi" at mainbus0 not configured
simplebus0 at mainbus0: "soc"
bcmclock0 at simplebus0
bcmmbox0 at simplebus0
bcmgpio0 at simplebus0
bcmaux0 at simplebus0
ampintc0 at simplebus0 nirq 256, ncpu 4 ipi: 0, 1, 2: "interrupt-controller"
bcmtmon0 at simplebus0
bcmdmac0 at simplebus0: DMA0 DMA2 DMA4 DMA5 DMA6 DMA7 DMA8 DMA9 DMA10
"timer" at simplebus0 not configured
pluart0 at simplebus0: rev 2, 16 byte fifo
pluart0: console
"local_intc" at simplebus0 not configured
bcmdog0 at simplebus0
bcmirng0 at simplebus0
"firmware" at simplebus0 not configured
"power" at simplebus0 not configured
"mailbox" at simplebus0 not configured
sdhc0 at simplebus0
sdhc0: SDHC 3.0, 250 MHz base clock
sdmmc0 at sdhc0: 4-bit, sd high-speed, mmc high-speed
"gpiomem" at simplebus0 not configured
"fb" at simplebus0 not configured
"vcsm" at simplebus0 not configured
"clocks" at mainbus0 not configured
"phy" at mainbus0 not configured
"clk-27M" at mainbus0 not configured
"clk-108M" at mainbus0 not configured
simplebus1 at mainbus0: "emmc2bus"
sdhc1 at simplebus1
sdhc1: SDHC 3.0, 100 MHz base clock
sdmmc1 at sdhc1: 8-bit, sd high-speed, mmc high-speed, ddr52, dma
"arm-pmu" at mainbus0 not configured
agtimer0 at mainbus0: 54000 kHz
simplebus2 at mainbus0: "scb"
bcmpcie0 at simplebus2
pci0 at bcmpcie0
ppb0 at pci0 dev 0 function 0 "Broadcom BCM2711" rev 0x20
pci1 at ppb0 bus 1
xhci0 at pci1 dev 0 function 0 "VIA VL805 xHCI" rev 0x01: intx, xHCI 1.0
usb0 at xhci0: USB revision 3.0
uhub0 at usb0 configuration 1 interface 0 "VIA xHCI root hub" rev
3.00/1.00 addr 1
bse0 at simplebus2: address e4:5f:01:d6:d9:1d
brgphy0 at bse0 phy 1: BCM54210E 10/100/1000baseT PHY, rev. 2
"dma" at simplebus2 not configured
"hevc-decoder" at simplebus2 not configured
"rpivid-local-intc" at simplebus2 not configured
"h264-decoder" at simplebus2 not configured
"vp9-decoder" at simplebus2 not configured
gpioleds0 at mainbus0: "led0", "led1"
"sd_io_1v8_reg" at mainbus0 not configured
"sd_vcc_reg" at mainbus0 not configured
"fixedregulator_3v3" at mainbus0 not configured
"fixedregulator_5v0" at mainbus0 not configured
simplebus3 at mainbus0: "v3dbus"
"bootloader" at mainbus0 not configured
scsibus0 at sdmmc1: 2 targets, initiator 0
sd0 at scsibus0 targ 1 lun 0: <SD/MMC, SR128, 0080> removable
sd0: 121942MB, 512 bytes/sector, 249737216 sectors
uhub1 at uhub0 port 1 configuration 1 interface 0 "VIA Labs USB2.0 Hub"
rev 2.10/4.21 addr 2
bwfm0 at sdmmc0 function 1
manufacturer 0x02d0, product 0xa9a6 at sdmmc0 function 2 not configured
manufacturer 0x02d0, product 0xa9a6 at sdmmc0 function 3 not configured
uhub2 at uhub1 port 2 configuration 1 interface 0 "Generic USB2.1 Hub"
rev 2.10/0.01 addr 3
uhub3 at uhub2 port 1 configuration 1 interface 0 "Generic USB2.1 Hub"
rev 2.10/0.02 addr 4
athn0 at uhub1 port 3 configuration 1 interface 0 "ATHEROS USB WLAN" rev
2.00/2.02 addr 5
uhub4 at uhub0 port 3 configuration 1 interface 0 "Generic USB3.2 Hub"
rev 3.20/0.01 addr 6
uhub5 at uhub4 port 1 configuration 1 interface 0 "Generic USB3.2 Hub"
rev 3.20/0.02 addr 7
vscsi0 at root
scsibus1 at vscsi0: 256 targets
softraid0 at root
scsibus2 at softraid0: 256 targets
root on sd0a (079a8ca5cd807d63.a) swap on sd0b dump on sd0b
WARNING: CHECK AND RESET THE DATE!
gpio0 at bcmgpio0: 58 pins
bwfm0: address e4:5f:01:d6:d9:1e
athn0: AR9287 rev 2 (2T2R), ROM rev 4, address b0:48:7a:92:44:b3
uvideo0 at uhub2 port 4 configuration 1 interface 0 "Sonix Technology
Co., Ltd. USB 2.0 Camera" rev 2.00/1.00 addr 8
video0 at uvideo0
