[Musix-usuarios] captura y control sobre webcam

Sab Ago 14 22:54:43 CEST 2010

2010/8/14 fri jappi <frijappi en gmail.com>

Hola.

cacho en musix2:~$ lsusb
> Bus 005 Device 003: ID 0c45:627b Microdia PC Camera (SN9C201 + OV7660)
> Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
> Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> Bus 001 Device 002: ID 0566:3107 Monterey International Corp.
> Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
>
> hay un cambiio en la consola
>

cierot, hay la tenemos ... en el Bus 005

>
> musix2:/home/cacho#
> musix2:/home/cacho# tail -f /var/log/syslog
>
> Aug 14 17:27:31 musix2 kernel: [ 7717.823886] usb 5-5: USB disconnect,
> address 3
> Aug 14 17:27:31 musix2 kernel: [ 7717.824457] sn9c20x: SN9C20X USB 2.0
> Webcam unplugged
> Aug 14 17:27:31 musix2 kernel: [ 7717.824506] sn9c20x: SN9C20X USB 2.0
> Webcam releases control of video device /dev/video0
> Aug 14 17:27:31 musix2 NetworkManager: <debug> [1281817651.380266]
> nm_hal_device_removed(): Device removed (hal udi is
>
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_if0_video4linux').
> Aug 14 17:27:31 musix2 NetworkManager: <debug> [1281817651.380922]
> nm_hal_device_removed(): Device removed (hal udi is
>
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_logicaldev_input').
> Aug 14 17:27:31 musix2 NetworkManager: <debug> [1281817651.386468]
> nm_hal_device_removed(): Device removed (hal udi is
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_if0').
> Aug 14 17:27:31 musix2 NetworkManager: <debug> [1281817651.391370]
> nm_hal_device_removed(): Device removed (hal udi is
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_usbraw').
> Aug 14 17:27:31 musix2 NetworkManager: <debug> [1281817651.394357]
> nm_hal_device_removed(): Device removed (hal udi is
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial').
> Aug 14 17:27:45 musix2 kernel: [ 7732.262044] usb 5-5: new high speed
> USB device using ehci_hcd and address 4
> Aug 14 17:27:45 musix2 kernel: [ 7732.378728] usb 5-5: New USB device
> found, idVendor=0c45, idProduct=627b
> Aug 14 17:27:45 musix2 kernel: [ 7732.378733] usb 5-5: New USB device
> strings: Mfr=0, Product=1, SerialNumber=0
> Aug 14 17:27:45 musix2 kernel: [ 7732.378738] usb 5-5: Product: USB20
> Camera
> Aug 14 17:27:45 musix2 kernel: [ 7732.378979] usb 5-5: configuration
> #1 chosen from 1 choice
>

y aquí nos da respuesta del módulo:

> Aug 14 17:27:45 musix2 kernel: [ 7732.380276] sn9c20x: SN9C20X USB 2.0
> Webcam - 0C45:627B plugged-in.
>

el: sn9c20x

> Aug 14 17:27:45 musix2 NetworkManager: <debug> [1281817665.947465]
> nm_hal_device_added(): New device added (hal udi is
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial').
> Aug 14 17:27:45 musix2 kernel: [ 7732.419543] sn9c20x: Detected OV7660
> Sensor.
>

y aquí el contacto con el dispositivo /dev/video:

> Aug 14 17:27:45 musix2 kernel: [ 7732.419743] sn9c20x: Webcam device
> 0C45:627B is now controlling video device /dev/video0
> Aug 14 17:27:45 musix2 kernel: [ 7732.419882] input: SN9C20X Webcam as
> /class/input/input11
> Aug 14 17:27:45 musix2 kernel: [ 7732.438696] sn9c20x: Using yuv420
> output format
> Aug 14 17:27:46 musix2 NetworkManager: <debug> [1281817666.062514]
> nm_hal_device_added(): New device added (hal udi is
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_if0').
> Aug 14 17:27:46 musix2 NetworkManager: <debug> [1281817666.100112]
> nm_hal_device_added(): New device added (hal udi is
>
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_if0_video4linux').
> Aug 14 17:27:46 musix2 NetworkManager: <debug> [1281817666.130819]
> nm_hal_device_added(): New device added (hal udi is
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_usbraw').
> Aug 14 17:27:46 musix2 NetworkManager: <debug> [1281817666.173294]
> nm_hal_device_added(): New device added (hal udi is
>
> '/org/freedesktop/Hal/devices/usb_device_c45_627b_noserial_logicaldev_input').
> Aug 14 17:28:15 musix2 battery-stats-collector[4668]: apm_read failed
> with error code 1
>
> Hey!
> alentador?
> parece al menos!
>

luego tu cámara, parece, está perfectamente soportada por el kernel ¿?. Al
menos el módulo está cargado. En el kernel de Musix-3 está incluido por
defecto, luego miro en el del Musix-2, ... pero creo que tambien ... ya te
cuento lo que vea, después.

Ahora hacemos un:

$ ls -la /dev/video0

y tambien, por si fala el anterior:

$ ls -la /dev/video

Ya casi acabamos !!!

Saludos.

> --
> Veritas liberabit nos
>
> _______________________________________________
> Musix GNU+Linux - www.musix.org.ar
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>

-- 
José A. González

Siempre GNU Linux.
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