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Date:      Tue, 19 Jan 2010 23:12:32 +0300
From:      Vladimir Grebenschikov <vova@fbsd.ru>
To:        vova@fbsd.ru
Cc:        freebsd-multimedia@freebsd.org, freebsd-current@freebsd.org, freebsd-usb@freebsd.org
Subject:   Re: [FreeBSD 8/9] USB webcamd and video4bsd: Call for testing
Message-ID:  <1263931952.2993.7.camel@localhost>
In-Reply-To: <1263244252.3558.29.camel@localhost>
References:  <201001101437.37269.hselasky@c2i.net> <1263244252.3558.29.camel@localhost>

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Hi=20

I've tested with recent ports.

pwcview works fine, both vga and sif

but skype still sees /dev/video0 but fails to play anything from it,
multimedia/cheese even does not sees webcam.

Is it supposed, or I am so unlucky ?

PS. microphone in cam work also as snd_uaudio pcm2

-----Original Message-----
From: Vladimir Grebenschikov <vova@fbsd.ru>
Reply-to: vova@fbsd.ru
To: Hans Petter Selasky <hselasky@c2i.net>
Cc: freebsd-multimedia@freebsd.org, freebsd-current@freebsd.org,
freebsd-usb@freebsd.org
Subject: Re: [FreeBSD 8/9] USB webcamd and video4bsd: Call for testing
Date: Tue, 12 Jan 2010 00:10:52 +0300

Hi=20

Thanks you for efforts!

I've tested it with=20
ugen4.2: <USB 2.0 Camera Vimicro Corp> at usbus4, cfg=3D0 md=3DHOST
spd=3DHIGH (480Mbps) pwr=3DON
on 9-CURRENT

pwcview works fine:
$ ./pwcview/pwcview
Webcam set to: 320x240 (sif) at 5 fps

skype detects video device, but shows only black window instead of
picture.

build webcamd.c with debug shows:
$ ./webcamd
Probing for 0.0.0
KrefGet: 0x483e2304 =3D 1
KrefGet: 0x483e2304 =3D 2
KrefGet: 0x483e2554 =3D 1
KrefGet: 0x483e2610 =3D 1
Added device 0x48318b04
KrefGet: 0x48318b08 =3D 1
Received command 1 0x00000000
KrefGet: 0x48318b08 =3D 2
Status =3D 0
Received command 5 0x40047601
Status =3D -22
Received command 5 0x403c7601
Status =3D 0
Received command 5 0x400e7606
Status =3D 0
Received command 5 0x800e7607
Status =3D -22
Received command 5 0x800e7607
Status =3D 0
Received command 5 0x40207609
Status =3D 0
Received command 5 0x8020760a
Status =3D 0
... and then in loop:
Status =3D -22
Received command 3 0x00025800
Status =3D -22
Received command 3 0x00025800
Status =3D -22
Received command 3 0x00025800
Status =3D -22
Received command 3 0x00025800
Status =3D -22
Received command 3 0x00025800
...


Side question, is it possible to use audio microphone of USB camera ?


-----Original Message-----
From: Hans Petter Selasky <hselasky@c2i.net>
To: freebsd-multimedia@freebsd.org, freebsd-current@freebsd.org,
freebsd-usb@freebsd.org
Subject: [FreeBSD 8/9] USB webcamd and video4bsd: Call for testing
Date: Sun, 10 Jan 2010 14:37:37 +0100

Hi,

During the last couple of days I've spent some time to finish my
webcam=20
daemon. My webcam daemon is basically an application which consists of

userspace Video4Linux USB webcam drivers and some uLinux glue code
which links=20
with libc, pthreads and libusb. The webcamd talks to
/dev/video_daemonX which=20
is provided by the video4bsd kernel module. There is full support for=20
mmap/read/write/open/close. poll is not supported.

Basic operation and idea:

/dev/video_daemonX is the interface for the webcamd. /dev/videoX is
the=20
interface for the V4L application. The video4bsd transports all data
between=20
these two devices. In the case the V4L application is using mmap, no
data is=20
copied due to shared kernel memory buffer!

Licensing issues:

Effectivly the webcamd userland program becomes GPL'ed due to the V4L
USB=20
drivers which are GPL licensed. Some files inside the webcamd remains
BSD=20
licensed which allows for building similar BSD licensed daemons.

The rest of the code is BSD licensed.

Source code:

1) FreeBSD 8-stable

2) Apply the patch below and re-install libusb in /usr/src/lib/libusb:

http://p4web.freebsd.org/chv.cgi?CH=3D172876

http://perforce.freebsd.org/chv.cgi?CH=3D172876

3) Compile ulinux (webcamd + libv4l + pwcview) and video4bsd (must be
checked=20
out in the same folder due to dependencies)

svn --username anonsvn --password anonsvn \
      checkout svn://svn.turbocat.net/i4b/trunk/usbcam/video4bsd

make all install
kldload video4bsd

svn --username anonsvn --password anonsvn \
      checkout svn://svn.turbocat.net/i4b/trunk/usbcam/ulinux

make fetch
make patch
make all
make install

# this will attach to the first detected webcam:
./webcamd

# this will try to attach to the given USB unit, interface and V4B
unit.
./webcamd -d ugen4.1 -i 0 -v 0

# this will display webcam contents from /dev/video0 by default.
./pwcview/pwcview

Feedback and bug reports are welcome.

Yes, I am working on getting this into ports!

Known issues:

1) If you detach the USB webcam you need to manually restart the
webcamd.

--HPS

Support: I will be available at #bsdusb on efnet during the day.
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--=20
Vladimir B. Grebenschikov
vova@fbsd.ru



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