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linux:gadget:logitech_webcam_c270

Logitch Webcam C270.ハードオフのジャンク箱から\500程で購入. 720p なのでオンラインミーティング程度なら必要十分な感じ.UVC/UAC でカメラ,マイク共にLinux で特に問題なく利用可能.暗さには弱い感じ.NotePC の影響上などに置くのに便利.

現行品はC270n のよう.違いは不明.

結構長く使えていたが,ビデオ,マイクにノイズが乗るようになって引退.ビデオはともかくマイクのノイズは致命的.

$ sudo dmesg --human --color --follow-new
[  +7.242762] usb 1-3: new high-speed USB device number 57 using xhci_hcd
[  +0.365461] usb 1-3: New USB device found, idVendor=046d, idProduct=0825, bcdDevice= 0.10
[  +0.000025] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=2
[  +0.000013] usb 1-3: SerialNumber: 7680CBD0
[  +0.011453] usb 1-3: Found UVC 1.00 device <unnamed> (046d:0825)
[  +0.121978] input: UVC Camera (046d:0825) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/input/input190
[  +0.069341] usb 1-3: set resolution quirk: cval->res = 384
$ lsusb -d 046d:0825
Bus 001 Device 057: ID 046d:0825 Logitech, Inc. Webcam C270

sudo_lsusb_-d_046d_0825_-vvv.log.xz

$ v4l-info /dev/video2

### v4l2 device info [/dev/video2] ###
general info
    VIDIOC_QUERYCAP
	driver                  : "uvcvideo"
	card                    : "UVC Camera (046d:0825)"
	bus_info                : "usb-0000:00:14.0-3"
	version                 : 6.1.12
	capabilities            : 0x84a00001 [VIDEO_CAPTURE,?,?,STREAMING,(null)]

standards

inputs
    VIDIOC_ENUMINPUT(0)
	index                   : 0
	name                    : "Camera 1"
	type                    : CAMERA
	audioset                : 0
	tuner                   : 0
	std                     : 0x0 []
	status                  : 0x0 []

video capture
    VIDIOC_ENUM_FMT(0,VIDEO_CAPTURE)
	index                   : 0
	type                    : VIDEO_CAPTURE
	flags                   : 0
	description             : "YUYV 4:2:2"
	pixelformat             : 0x56595559 [YUYV]
    VIDIOC_ENUM_FMT(1,VIDEO_CAPTURE)
	index                   : 1
	type                    : VIDEO_CAPTURE
	flags                   : 1
	description             : "Motion-JPEG"
	pixelformat             : 0x47504a4d [MJPG]
    VIDIOC_G_FMT(VIDEO_CAPTURE)
	type                    : VIDEO_CAPTURE
	fmt.pix.width           : 640
	fmt.pix.height          : 480
	fmt.pix.pixelformat     : 0x56595559 [YUYV]
	fmt.pix.field           : NONE
	fmt.pix.bytesperline    : 1280
	fmt.pix.sizeimage       : 614400
	fmt.pix.colorspace      : SRGB
	fmt.pix.priv            : 4276996862

controls
    VIDIOC_QUERYCTRL(BASE+0)
	id                      : 9963776
	type                    : INTEGER
	name                    : "Brightness"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 128
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+1)
	id                      : 9963777
	type                    : INTEGER
	name                    : "Contrast"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 32
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+2)
	id                      : 9963778
	type                    : INTEGER
	name                    : "Saturation"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 32
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+12)
	id                      : 9963788
	type                    : BOOLEAN
	name                    : "White Balance, Automatic"
	minimum                 : 0
	maximum                 : 1
	step                    : 1
	default_value           : 1
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+19)
	id                      : 9963795
	type                    : INTEGER
	name                    : "Gain"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 0
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+24)
	id                      : 9963800
	type                    : MENU
	name                    : "Power Line Frequency"
	minimum                 : 0
	maximum                 : 2
	step                    : 1
	default_value           : 2
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+26)
	id                      : 9963802
	type                    : INTEGER
	name                    : "White Balance Temperature"
	minimum                 : 0
	maximum                 : 10000
	step                    : 10
	default_value           : 4000
	flags                   : INACTIVE
    VIDIOC_QUERYCTRL(BASE+27)
	id                      : 9963803
	type                    : INTEGER
	name                    : "Sharpness"
	minimum                 : 0
	maximum                 : 255
	step                    : 1
	default_value           : 24
	flags                   : unknown
    VIDIOC_QUERYCTRL(BASE+28)
	id                      : 9963804
	type                    : INTEGER
	name                    : "Backlight Compensation"
	minimum                 : 0
	maximum                 : 1
	step                    : 1
	default_value           : 1
	flags                   : unknown
$ pactl list sources | grep 'escription: Webcam C270' -B 3 -A999
Source #919
	State: RUNNING
	Name: alsa_input.usb-046d_0825_7680CBD0-02.mono-fallback
	Description: Webcam C270 モノ
	Driver: PipeWire
	Sample Specification: s16le 1ch 48000Hz
	Channel Map: mono
	Owner Module: 4294967295
	Mute: no
	Volume: mono: 65536 / 100% / 0.00 dB
	        balance 0.00
	Base Volume: 20724 /  32% / -30.00 dB
	Monitor of Sink: n/a
	Latency: 0 usec, configured 0 usec
	Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
	Properties:
		alsa.card = "2"
		alsa.card_name = "USB Device 0x46d:0x825"
		alsa.class = "generic"
		alsa.device = "0"
		alsa.driver_name = "snd_usb_audio"
		alsa.id = "USB Audio"
		alsa.long_card_name = "USB Device 0x46d:0x825 at usb-0000:00:14.0-3, high speed"
		alsa.name = "USB Audio"
		alsa.resolution_bits = "16"
		alsa.subclass = "generic-mix"
		alsa.subdevice = "0"
		alsa.subdevice_name = "subdevice #0"
		api.alsa.card.longname = "USB Device 0x46d:0x825 at usb-0000:00:14.0-3, high speed"
		api.alsa.card.name = "USB Device 0x46d:0x825"
		api.alsa.path = "hw:2"
		api.alsa.pcm.card = "2"
		api.alsa.pcm.stream = "capture"
		audio.channels = "1"
		audio.position = "MONO"
		card.profile.device = "1"
		device.api = "alsa"
		device.class = "sound"
		device.id = "113"
		device.profile.description = "モノ"
		device.profile.name = "mono-fallback"
		device.routes = "1"
		factory.name = "api.alsa.pcm.source"
		media.class = "Audio/Source"
		device.description = "Webcam C270"
		node.name = "alsa_input.usb-046d_0825_7680CBD0-02.mono-fallback"
		node.nick = "USB Device 0x46d 0x825"
		node.pause-on-idle = "false"
		object.path = "alsa:pcm:2:hw:2:capture"
		priority.driver = "2000"
		priority.session = "2000"
		factory.id = "18"
		clock.quantum-limit = "8192"
		client.id = "33"
		node.driver = "true"
		factory.mode = "split"
		audio.adapt.follower = ""
		library.name = "audioconvert/libspa-audioconvert"
		object.id = "110"
		object.serial = "919"
		node.max-latency = "16384/48000"
		api.alsa.period-size = "512"
		api.alsa.period-num = "64"
		api.alsa.headroom = "512"
		api.acp.auto-port = "false"
		api.acp.auto-profile = "false"
		api.alsa.card = "2"
		api.alsa.use-acp = "true"
		api.dbus.ReserveDevice1 = "Audio2"
		device.bus = "usb"
		device.bus-id = "usb-046d_0825_7680CBD0-02"
		device.bus_path = "pci-0000:00:14.0-usb-0:3:1.2"
		device.enum.api = "udev"
		device.form_factor = "webcam"
		device.icon_name = "camera-web-analog-usb"
		device.name = "alsa_card.usb-046d_0825_7680CBD0-02"
		device.nick = "USB Device 0x46d:0x825"
		device.plugged.usec = "145746953612"
		device.product.id = "0x0825"
		device.product.name = "Webcam C270"
		device.serial = "046d_0825_7680CBD0"
		device.subsystem = "sound"
		sysfs.path = "/devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.2/sound/card2"
		device.vendor.id = "0x046d"
		device.vendor.name = "Logitech, Inc."
		device.string = "2"
	Ports:
		analog-input-mic: マイクロフォン (type: Mic, priority: 8700, availability unknown)
	Active Port: analog-input-mic
	Formats:
		pcm

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linux/gadget/logitech_webcam_c270.txt · 最終更新: 2023/03/11 00:26 by matoken